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| author | Nebuleon Fumika | 2013-02-03 04:19:11 -0500 |
|---|---|---|
| committer | Nebuleon Fumika | 2013-02-03 04:19:11 -0500 |
| commit | 8693ae1bd880a758eb2efec4fccd32f89593855d (patch) | |
| tree | 660b7ceed1789fc904332b96a2a4006b0e4cc6b8 /sdk-modifications/libsrc | |
| parent | 02f8184fe07d99cceb85f4abd3ef0e5e3765b5ea (diff) | |
| download | snesemu-8693ae1bd880a758eb2efec4fccd32f89593855d.tar.gz snesemu-8693ae1bd880a758eb2efec4fccd32f89593855d.tar.bz2 snesemu-8693ae1bd880a758eb2efec4fccd32f89593855d.zip | |
Add SDK modifications by BassAceGold as of 2011-04-14, as well as modified DMA functions as of 2013-01-29.
Diffstat (limited to 'sdk-modifications/libsrc')
79 files changed, 20722 insertions, 0 deletions
diff --git a/sdk-modifications/libsrc/.depend b/sdk-modifications/libsrc/.depend new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/sdk-modifications/libsrc/.depend diff --git a/sdk-modifications/libsrc/Makefile b/sdk-modifications/libsrc/Makefile new file mode 100644 index 0000000..6e2b4ab --- /dev/null +++ b/sdk-modifications/libsrc/Makefile @@ -0,0 +1,67 @@ + +CURR_DIR = ${shell pwd} +#CROSS :=# +#CROSS := /opt/mipsel-4.1.2-nopic/bin/ +CROSS := /opt/mipsel-4.1.2-nopic/bin/ + + +CC = $(CROSS)mipsel-linux-gcc +AR = $(CROSS)mipsel-linux-ar rcsv + +TOPDIR = . +CONSOLE_DIR = $(TOPDIR)/console +FS_DIR = $(TOPDIR)/fs +KEY_DIR = $(TOPDIR)/key +ZLIB_DIR = $(TOPDIR)/zlib +DMA_DIR = $(TOPDIR)/dma + +SRC := + +SSRC := + +INCLUDES := -I../include + +INC := $(INCLUDES) + +CFLAGS := -mips32 -O3 -mno-abicalls -fno-pic -fno-builtin \ + -fno-exceptions -ffunction-sections -mlong-calls\ + -fomit-frame-pointer -msoft-float -G 4 + +include $(CONSOLE_DIR)/console.mk +include $(FS_DIR)/fs.mk +include $(KEY_DIR)/key.mk +include $(ZLIB_DIR)/zlib.mk +include $(DMA_DIR)/dma.mk + +#OBJS := $(addsuffix .o , $(basename $(notdir $(SRC)))) +#SOBJS := $(addsuffix .o , $(basename $(notdir $(SSRC)))) + +OBJS := $(SRC:.c=.o) +SOBJS := $(SSRC:.S=.o) + +all : depend libds2a.a + +libds2a.a : $(OBJS) $(SOBJS) + $(AR) $@ $(OBJS) $(SOBJS) + cp $@ ../lib + +clrscreen: + @clear + @clear + +clean : + rm -rf $(OBJS) $(SOBJS) *.a + rm -f depend + +.c.o : + $(CC) $(CFLAGS) $(INC) -o $@ -c $< +.cpp.o : + $(CC) $(CFLAGS) $(INC) -fno-rtti -fvtable-gc -o $@ -c $< +.S.o : + $(CC) $(CFLAGS) $(INC) -D_ASSEMBLER_ -D__ASSEMBLY__ -o $@ -c $< + +depend : Makefile + $(CC) -MM $(CFLAGS) $(INC) $(SSRC) $(SRC) > $@ + +sinclude depend + diff --git a/sdk-modifications/libsrc/console/console.c b/sdk-modifications/libsrc/console/console.c new file mode 100644 index 0000000..f455ac5 --- /dev/null +++ b/sdk-modifications/libsrc/console/console.c @@ -0,0 +1,484 @@ +//console.c
+
+#include <stdio.h>
+#include <stdarg.h>
+#include "ds2io.h"
+#include "memory.h"
+#include "font_dot.h"
+
+#define STRING_SIZE 2048
+
+#define CONSOLE_WIDTH 32
+#define CONSOLE_HEIGHT 24
+#define TAB_SIZE 3
+ +static void ConsoleView(void); +static void ConsoleDrawfontall(void); +
+static int console_init_done = 0;
+static unsigned short f_color;
+static unsigned short b_color;
+static enum SCREEN_ID console_id;
+
+static int print_row;
+static int print_col;
+static int print_row_saved;
+static int print_col_saved; +
+static unsigned char* console_buf;
+static unsigned int console_buf_size;
+static unsigned char* console_buf_front;
+static unsigned char* console_buf_end;
+static unsigned char* console_print_header;
+static unsigned short* console_screen;
+static unsigned char* print_header_saved; +
+static void ConsoleFlush(void)
+{ + unsigned short* screen_addr; + enum SCREEN_ID id; + + if(console_id & UP_MASK) { + screen_addr = up_screen_addr; + id = UP_SCREEN; + } + else { + screen_addr = down_screen_addr; + id = DOWN_SCREEN; + } + + memcpy((void*)screen_addr, (void*)console_screen, SCREEN_WIDTH*SCREEN_HEIGHT*2); + ds2_flipScreen(id, 1); +}
+
+static void ConsoleClearscreen(void)
+{ + unsigned short *scr; + unsigned int i; + + scr = console_screen; + i = 0; + while(i < SCREEN_WIDTH*SCREEN_HEIGHT) + scr[i++] = b_color;
+}
+
+static void ConsoleMovewin(int dir, int sw_screen)
+{ + unsigned char *pt; + + if(dir || sw_screen) + ConsoleClearscreen(); + + //switch to another screen to dispaly text
+ if(sw_screen) + { + ConsoleFlush(); + //now up screen + if(console_id & UP_MASK) { + console_screen = down_screen_addr; + console_id = DOWN_SCREEN; + } + //switch to up screen + else + { + console_screen = up_screen_addr; + console_id = UP_SCREEN; + } + } + + pt = console_print_header + dir*CONSOLE_WIDTH; + + //screen scroll down + if(dir > 0) + { + if(console_buf_end > console_print_header) { + if(pt > console_buf_end) + pt = console_buf_end; + console_print_header = pt; + } + else if(console_buf_end < console_print_header) { + if((pt - console_buf) >= console_buf_size) { + pt -= console_buf_size; + if(pt > console_buf_end) + pt = console_buf_end; + } + console_print_header = pt; + } + } + //screen scroll up + else if(dir < 0) + { + if(console_buf_front > console_print_header) { + if(pt < console_buf) { + pt += console_buf_size; + if(pt < console_buf_front) + pt = console_buf_front; + } + console_print_header = pt; + } + else if(console_buf_front < console_print_header) { + if(pt < console_buf_front) + pt = console_buf_front; + console_print_header = pt; + } + } + + if(dir || sw_screen) + { + print_row_saved = 0; //redraw entire screen
+ print_col_saved = 0; + + ConsoleDrawfontall(); + ConsoleFlush(); + }
+}
+
+void ConsoleClr(int mode)
+{
+ unsigned char *pt, *pt_end;
+ unsigned int i;
+
+ //Clear current screen buffer
+ if(0 == mode)
+ { + if(print_col > 0) { + console_buf_end += CONSOLE_WIDTH; + if((console_buf_end - console_buf) >= console_buf_size) + console_buf_end -= console_buf_size; + } + + console_print_header = console_buf_end; + print_row = 0;
+ print_col = 0; + print_row_saved = 0;
+ print_col_saved = 0;
+ }
+ //Clear all
+ else if(1 == mode)
+ {
+ console_buf_front = console_buf;
+ console_buf_end = console_buf;
+ console_print_header = console_buf;
+ print_row = 0;
+ print_col = 0; + print_row_saved = 0;
+ print_col_saved = 0;
+
+ pt = console_buf; + pt_end = console_buf + console_buf_size; + while(pt < pt_end)
+ {
+ pt[0] = '\0';
+ pt += CONSOLE_WIDTH;
+ }
+ }
+
+ ConsoleClearscreen(); + ConsoleFlush(); +}
+
+//Draw part of the screen
+static void ConsoleDrawfont(void)
+{
+ unsigned char *pt, *dot_map;
+ unsigned char ch, dot;
+ unsigned short *dst, *pt_r;
+ unsigned int row, col;
+ unsigned int x, j, k;
+
+ pt_r = console_screen;
+ row = print_row_saved;
+ col = print_col_saved;
+ x = col*8;
+
+ pt = console_print_header + row * CONSOLE_WIDTH;
+
+ while(row != print_row || col != print_col)
+ { + ch = pt[col++] & 0x7F;
+ //'\n'
+ if('\n' == ch || '\0' == ch || col > CONSOLE_WIDTH) {
+ pt += CONSOLE_WIDTH;
+ if((pt - console_buf) >= console_buf_size) pt -= console_buf_size;
+ col = 0;
+ row += 1;
+ x = 0;
+ }
+ //character not '\n' nor '\0'
+ else {
+ dot_map = (unsigned char*)font_map[ch];
+
+ for(j= 0; j < 8; j++)
+ {
+ dot = *dot_map++;
+ dst = pt_r + (row*8+j)*SCREEN_WIDTH + x;
+ for(k = 0; k < 8; k++)
+ *dst++ = (dot & (0x80>>k)) ? f_color : b_color;
+ } + x += 8;
+ }
+ }
+}
+
+//Redraw the hole screen
+static void ConsoleDrawfontall(void)
+{
+ unsigned char *pt, *end_pt, *dot_map;
+ unsigned int i, j, k;
+ unsigned char ch, dot;
+ unsigned short *dst, *pt_r;
+ unsigned int x, y;
+ + //Clear screen to b_color
+ pt_r = console_screen;
+ i = 0; + while(i < SCREEN_WIDTH*SCREEN_HEIGHT) + pt_r[i++] = b_color;
+
+ pt = console_print_header;
+ end_pt = console_buf_end;
+ x = 0;
+ y = 0;
+ i = 0;
+ while(pt != end_pt)
+ {
+ ch = pt[i++] & 0x7F;
+ //'\n'
+ if('\n' == ch || '\0' == ch || i > CONSOLE_WIDTH) {
+ pt += CONSOLE_WIDTH;
+ if((pt - console_buf) >= console_buf_size) pt -= console_buf_size;
+ i = 0;
+ x = 0;
+ y += 1; + if(y >= CONSOLE_HEIGHT) break;
+ }
+ //character not '\n' nor '\0'
+ else {
+ dot_map = (unsigned char*)font_map[ch];
+ + for(j= 0; j < 8; j++)
+ {
+ dot = *dot_map++;
+ dst = pt_r + (y*8+j)*SCREEN_WIDTH + x;
+ for(k = 0; k < 8; k++)
+ *dst++ = (dot & (0x80>>k)) ? f_color : b_color;
+ }
+ x += 8;
+ }
+ }
+}
+
+static void ConsoleNewline(void)
+{
+ print_row += 1;
+ if(print_row >= CONSOLE_HEIGHT)
+ { + print_row -= 1;
+ console_print_header += CONSOLE_WIDTH;
+ if((console_print_header - console_buf) >= console_buf_size)
+ console_print_header = console_buf;
+
+ print_row_saved = 0;
+ print_col_saved = 0; + + ConsoleClearscreen();
+ }
+
+ console_buf_end += CONSOLE_WIDTH;
+ if((console_buf_end - console_buf) >= console_buf_size) + console_buf_end = console_buf; +
+ //scrollback
+ if(console_buf_end == console_buf_front)
+ { + console_buf_front += CONSOLE_WIDTH;
+ if((console_buf_front - console_buf) >= console_buf_size) + console_buf_front = console_buf; + + console_buf_end[0] = '\0';
+ }
+}
+
+static void ConsolePrintchar(unsigned char ch)
+{
+ int i;
+
+ if(print_col >= CONSOLE_WIDTH) {
+ print_col = 0;
+ ConsoleNewline();
+ }
+
+ switch(ch) {
+ case 9: //'\t'
+ if((print_col + TAB_SIZE) < CONSOLE_WIDTH)
+ {
+ i = print_col % TAB_SIZE;
+ i = TAB_SIZE - i;
+ while(i--)
+ {
+ console_buf_end[print_col] = ' ';
+ print_col += 1;
+ }
+ }
+ break;
+ case 10: //'\n'
+ case 13: //'\r'
+ console_buf_end[print_col] = '\n';
+ print_col = 0;
+ ConsoleNewline();
+ break;
+ default:
+ console_buf_end[print_col] = ch;
+ if(ch != '\0')
+ print_col += 1;
+ break;
+ }
+}
+
+void ConsolePrintstring(unsigned char* string)
+{
+ unsigned char *pt;
+ unsigned char ch;
+ + print_row_saved = print_row;
+ print_col_saved = print_col; + console_print_header = print_header_saved;
+//cprintf("print_row %d; print_col %d; [%s]\n", print_row, print_col, string);
+ pt = string;
+ do
+ {
+ ch = *pt++;
+ ConsolePrintchar(ch);
+ }
+ while ('\0' != ch);
+ + print_header_saved = console_print_header; +
+ ConsoleDrawfont();
+ ConsoleFlush();
+}
+
+//---------------------------------------------------------------------------------
+//parameter:
+// front_color: color of character
+// background_color: background color
+// screen: UP-up screen used as output, DOWN-down screen used as output,
+// using only one screen at a time
+// buf_size: buffer size to hold the output, it's unit is screen
+//---------------------------------------------------------------------------------
+int ConsoleInit(unsigned short front_color, unsigned short background_color, enum SCREEN_ID screen, unsigned int buf_size)
+{
+ unsigned char *pt;
+ unsigned int size;
+ unsigned short **scr_ppt; +
+ console_init_done = 0;
+ f_color = front_color;
+ b_color = background_color;
+ + + //Using only one screen at a time + if(screen & UP_MASK) + console_id = UP_SCREEN; + else + console_id = DOWN_SCREEN; + + if(!buf_size) buf_size = 1;
+ size = buf_size *CONSOLE_WIDTH *CONSOLE_HEIGHT; +
+ pt = (unsigned char*)Drv_alloc(size);
+ if(NULL == pt)
+ return -1; //there is something error
+
+ console_buf = pt;
+ memset(console_buf, 0, size);
+
+ print_row = 0;
+ print_col = 0; + print_row_saved = print_row;
+ print_col_saved = print_col;
+ console_buf_size = size;
+ console_buf_front = console_buf;
+ console_buf_end = console_buf;
+ console_print_header = console_buf; + print_header_saved = console_print_header;
+
+ console_screen = (unsigned short*)Drv_alloc(SCREEN_WIDTH * SCREEN_HEIGHT*2);
+ if(NULL == console_screen) {
+ Drv_deAlloc((void*)console_buf);
+ return -1;
+ }
+
+ ConsoleClr(1);
+
+ console_init_done = 1; + + regist_escape_key(ConsoleView, (KEY_L | KEY_R | KEY_A | KEY_B | KEY_X));
+ return 0;
+}
+ +void ConsoleView(void) +{ + unsigned int key; + +cprintf("enter console mode\n"); + + do { + key = getKey(); + + switch(key) + { + //screen scroll down 1 line + case KEY_UP: + ConsoleMovewin(-1, 0); + break; + + //screen scroll up 1 line + case KEY_DOWN: + ConsoleMovewin(1, 0); + break; + + //screen scroll done (CONSOLE_HEIGHT-1) line + case KEY_LEFT: + ConsoleMovewin(-(CONSOLE_HEIGHT-1), 0); + break; + + //screen scroll up (CONSOLE_HEIGHT-1) line + case KEY_RIGHT: + ConsoleMovewin(CONSOLE_HEIGHT-1, 0); + break; + + //switch screen + case KEY_B: +cprintf("switch to another screen\n"); + ConsoleMovewin(0, 1); + break; + + default: break; + } + + mdelay(20); + } while(key != KEY_Y); + +cprintf("exit console mode\n"); +} +
+int printf(const char *format, ...)
+{
+ char string[STRING_SIZE];
+ int ret;
+ va_list ap;
+ + if(!console_init_done) + return 0; + + va_start (ap, format);
+ ret = vsnprintf(string, STRING_SIZE, format, ap);
+ va_end (ap);
+
+ ConsolePrintstring(string);
+
+ return ret;
+}
+
+
diff --git a/sdk-modifications/libsrc/console/console.h b/sdk-modifications/libsrc/console/console.h new file mode 100644 index 0000000..f6d74a4 --- /dev/null +++ b/sdk-modifications/libsrc/console/console.h @@ -0,0 +1,9 @@ +#ifndef __CONSOLE_H__
+#define __CONSOLE_H__
+#include "ds2io.h" +
+extern int ConsoleInit(unsigned short front_color, unsigned short background_color, enum SCREEN_ID screen, unsigned int buf_size);
+
+extern int cprintf(const char *format, ...);
+
+#endif //__CONSOLE_H__ diff --git a/sdk-modifications/libsrc/console/console.mk b/sdk-modifications/libsrc/console/console.mk new file mode 100644 index 0000000..b8a436e --- /dev/null +++ b/sdk-modifications/libsrc/console/console.mk @@ -0,0 +1,10 @@ +#console.mk + +SRC += $(CONSOLE_DIR)/console.c + +SSRC += + +INC += -I$(CONSOLE_DIR) + +CFLAGS += + diff --git a/sdk-modifications/libsrc/console/font_dot.h b/sdk-modifications/libsrc/console/font_dot.h new file mode 100644 index 0000000..cdf6067 --- /dev/null +++ b/sdk-modifications/libsrc/console/font_dot.h @@ -0,0 +1,75 @@ +#ifndef __FONT_DOT_H__ +#define __FONT_DOT_H__ + +//version 0.1 +//modified ''', '(',')',';','?','[',']','^','_''`','{','}','~' + +const unsigned char font_map[128][8] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x08, 0x08, 0x08, 0x08, + 0x00, 0x00, 0x00, 0x78, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x0f, 0x00, 0x00, 0x00, 0x00, + 0x08, 0x08, 0x08, 0x78, 0x00, 0x00, 0x00, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, + 0x00, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c, 0x3c, 0x18, 0x00, 0x00, 0x00, + 0x7c, 0x64, 0x44, 0x44, 0x64, 0x7c, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x08, 0x10, 0x70, 0x50, 0x50, 0x70, 0x00, + 0x24, 0x24, 0x1c, 0x08, 0x3f, 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x16, 0x1a, 0x12, 0x12, 0x16, 0x34, 0x20, 0x00, 0x3c, 0x24, 0x24, 0x66, 0x24, 0x3c, 0x08, 0x08, + 0x08, 0x08, 0x08, 0x7f, 0x08, 0x08, 0x08, 0x08, 0x0c, 0x1c, 0x3c, 0x3c, 0x1c, 0x0c, 0x04, 0x00, + 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x1c, 0x18, 0x18, 0x18, 0x18, 0x00, 0x18, 0x00, 0x00, + 0x54, 0x54, 0x34, 0x14, 0x14, 0x14, 0x14, 0x14, 0x08, 0x08, 0x08, 0x7f, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x7f, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x78, 0x08, 0x08, 0x08, 0x08, + 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x0f, 0x08, 0x08, 0x08, 0x08, + 0x00, 0x00, 0x08, 0x7c, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x7c, 0x20, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, 0x10, 0x00, + 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14, 0x14, 0x7e, 0x28, 0x7e, 0x28, 0x28, 0x00, + 0x1c, 0x2c, 0x28, 0x18, 0x0c, 0x2c, 0x3c, 0x08, 0x64, 0x68, 0x68, 0x7c, 0x1c, 0x1c, 0x2c, 0x00, + 0x30, 0x30, 0x3c, 0x28, 0x58, 0x50, 0x3c, 0x00, 0x30, 0x30, 0x10, 0x20, 0x00, 0x00, 0x00, 0x00, //''' + 0x04, 0x08, 0x10, 0x10, 0x10, 0x10, 0x08, 0x04, 0x40, 0x20, 0x10, 0x10, 0x10, 0x10, 0x20, 0x40, + 0x10, 0x54, 0x38, 0x38, 0x54, 0x10, 0x00, 0x00, 0x10, 0x10, 0x7c, 0x10, 0x10, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x20, 0x40, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x08, 0x08, 0x10, 0x10, 0x20, 0x20, 0x20, 0x40, + 0x18, 0x24, 0x24, 0x24, 0x24, 0x24, 0x18, 0x00, 0x10, 0x30, 0x10, 0x10, 0x10, 0x10, 0x38, 0x00, + 0x18, 0x24, 0x04, 0x08, 0x10, 0x20, 0x3c, 0x00, 0x18, 0x24, 0x04, 0x18, 0x04, 0x24, 0x18, 0x00, + 0x08, 0x18, 0x28, 0x48, 0x7c, 0x08, 0x08, 0x00, 0x3c, 0x20, 0x38, 0x04, 0x04, 0x24, 0x18, 0x00, + 0x38, 0x40, 0x40, 0x78, 0x44, 0x44, 0x38, 0x00, 0x3c, 0x08, 0x08, 0x10, 0x10, 0x10, 0x10, 0x00, + 0x18, 0x24, 0x24, 0x18, 0x24, 0x24, 0x18, 0x00, 0x18, 0x24, 0x24, 0x1c, 0x04, 0x04, 0x18, 0x00, + 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x10, 0x10, 0x20, //';' + 0x04, 0x08, 0x10, 0x20, 0x10, 0x08, 0x04, 0x00, 0x00, 0x00, 0x7c, 0x00, 0x00, 0x7c, 0x00, 0x00, + 0x20, 0x10, 0x08, 0x04, 0x08, 0x10, 0x20, 0x00, 0x10, 0x24, 0x24, 0x08, 0x10, 0x10, 0x00, 0x10, //'?' + 0x38, 0x4c, 0x54, 0x5c, 0x54, 0x44, 0x38, 0x00, 0x10, 0x10, 0x28, 0x28, 0x38, 0x28, 0x6c, 0x00, + 0x78, 0x24, 0x38, 0x24, 0x24, 0x24, 0x78, 0x00, 0x3c, 0x44, 0x40, 0x40, 0x40, 0x44, 0x38, 0x00, + 0x78, 0x24, 0x24, 0x24, 0x24, 0x24, 0x78, 0x00, 0x7c, 0x24, 0x20, 0x38, 0x20, 0x24, 0x7c, 0x00, + 0x7c, 0x24, 0x28, 0x38, 0x28, 0x20, 0x70, 0x00, 0x38, 0x40, 0x40, 0x40, 0x5c, 0x48, 0x30, 0x00, + 0x76, 0x24, 0x24, 0x3c, 0x24, 0x24, 0x76, 0x00, 0x38, 0x10, 0x10, 0x10, 0x10, 0x10, 0x38, 0x00, + 0x38, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x60, 0x74, 0x28, 0x30, 0x30, 0x28, 0x28, 0x6c, 0x00, + 0x70, 0x20, 0x20, 0x20, 0x20, 0x24, 0x7c, 0x00, 0x66, 0x3c, 0x3c, 0x3c, 0x34, 0x24, 0x66, 0x00, + 0x6e, 0x24, 0x34, 0x34, 0x2c, 0x24, 0x74, 0x00, 0x38, 0x44, 0x44, 0x44, 0x44, 0x44, 0x38, 0x00, + 0x78, 0x24, 0x24, 0x38, 0x20, 0x20, 0x70, 0x00, 0x38, 0x44, 0x44, 0x44, 0x74, 0x4c, 0x38, 0x0c, + 0x78, 0x24, 0x38, 0x28, 0x24, 0x24, 0x76, 0x00, 0x1c, 0x24, 0x20, 0x18, 0x04, 0x24, 0x38, 0x00, + 0x7c, 0x54, 0x10, 0x10, 0x10, 0x10, 0x38, 0x00, 0x66, 0x24, 0x24, 0x24, 0x24, 0x24, 0x18, 0x00, + 0x6c, 0x28, 0x28, 0x28, 0x28, 0x10, 0x10, 0x00, 0x7e, 0x52, 0x52, 0x2c, 0x2c, 0x24, 0x24, 0x00, + 0x6c, 0x28, 0x28, 0x10, 0x28, 0x28, 0x6c, 0x00, 0x6c, 0x28, 0x28, 0x10, 0x10, 0x10, 0x38, 0x00, + 0x7c, 0x48, 0x10, 0x10, 0x20, 0x24, 0x7c, 0x00, 0x00, 0x1c, 0x10, 0x10, 0x10, 0x10, 0x10, 0x1c, + 0x20, 0x20, 0x10, 0x10, 0x08, 0x08, 0x08, 0x04, 0x00, 0x38, 0x08, 0x08, 0x08, 0x08, 0x08, 0x38, //']' + 0x10, 0x28, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7C, + 0x20, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x48, 0x38, 0x48, 0x3c, 0x00, //'a' + 0x60, 0x20, 0x38, 0x24, 0x24, 0x24, 0x38, 0x00, 0x00, 0x00, 0x1c, 0x24, 0x20, 0x20, 0x1c, 0x00, + 0x0c, 0x04, 0x1c, 0x24, 0x24, 0x24, 0x1e, 0x00, 0x00, 0x00, 0x18, 0x24, 0x3c, 0x20, 0x1c, 0x00, + 0x0c, 0x10, 0x3c, 0x10, 0x10, 0x10, 0x38, 0x00, 0x00, 0x00, 0x3c, 0x28, 0x38, 0x20, 0x3c, 0x3c, + 0x60, 0x20, 0x38, 0x24, 0x24, 0x24, 0x76, 0x00, 0x10, 0x00, 0x30, 0x10, 0x10, 0x10, 0x38, 0x00, + 0x08, 0x00, 0x18, 0x08, 0x08, 0x08, 0x08, 0x38, 0x60, 0x20, 0x2c, 0x28, 0x30, 0x28, 0x6c, 0x00, + 0x30, 0x10, 0x10, 0x10, 0x10, 0x10, 0x38, 0x00, 0x00, 0x00, 0x78, 0x54, 0x54, 0x54, 0x54, 0x00, + 0x00, 0x00, 0x78, 0x24, 0x24, 0x24, 0x76, 0x00, 0x00, 0x00, 0x38, 0x44, 0x44, 0x44, 0x38, 0x00, + 0x00, 0x00, 0x78, 0x24, 0x24, 0x24, 0x38, 0x70, 0x00, 0x00, 0x1c, 0x24, 0x24, 0x24, 0x1c, 0x0e, + 0x00, 0x00, 0x34, 0x18, 0x10, 0x10, 0x38, 0x00, 0x00, 0x00, 0x3c, 0x20, 0x18, 0x04, 0x3c, 0x00, + 0x10, 0x10, 0x38, 0x10, 0x10, 0x10, 0x08, 0x00, 0x00, 0x00, 0x6c, 0x24, 0x24, 0x24, 0x1e, 0x00, + 0x00, 0x00, 0x6c, 0x28, 0x28, 0x28, 0x10, 0x00, 0x00, 0x00, 0x6f, 0x2a, 0x2a, 0x36, 0x14, 0x00, + 0x00, 0x00, 0x7c, 0x28, 0x10, 0x28, 0x7c, 0x00, 0x00, 0x00, 0x7c, 0x28, 0x10, 0x10, 0x20, 0x60, + 0x00, 0x00, 0x3c, 0x08, 0x08, 0x10, 0x3c, 0x00, 0x00, 0x08, 0x10, 0x10, 0x20, 0x10, 0x10, 0x08, + 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x20, 0x10, 0x10, 0x08, 0x10, 0x10, 0x20, + 0x00, 0x00, 0x20, 0x54, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }; + +#endif //__FONT_DOT_H__ + diff --git a/sdk-modifications/libsrc/dma/dma.h b/sdk-modifications/libsrc/dma/dma.h new file mode 100644 index 0000000..f6ff230 --- /dev/null +++ b/sdk-modifications/libsrc/dma/dma.h @@ -0,0 +1,46 @@ +#ifndef __DMA_H__ +#define __DMA_H__ + +//register a DMA transfer request +//ch: channel id request, there are 6 channles, +//irq_handler: the DMA interruption handle +//arg: argument to the handle +//mode: DMA mode, such as port width, address increased/fixed, and so on +//type: DMA request type +extern int dma_request(int ch, void (*irq_handler)(unsigned int), unsigned int arg, + unsigned int mode, unsigned int type); + +//start DMA transfer, must request a DMA first +//ch: channel id +//srcAddr: DMA source address +//dstAddr: DMA destination address +//count: DMA transfer count, the total bytes due the mode in dma_request +extern void dma_start(int ch, unsigned int srcAddr, unsigned int dstAddr, + unsigned int count); + +//Stop DMA transfer +extern void dma_stop(int ch); + +//Wait DMA transfer over +extern int dma_wait_finish(int ch); + + +/* + * Copy 'size' bytes from src to dest, in blocks of 32 bytes. + * size is in bytes and must be a multiple of 32. + * Both src and dest must be aligned to 32 bytes. + * Returns 0 on failure, non-zero on success. + */ +extern int dma_copy32Byte(int ch, void *dest, void *src, unsigned int size); +// Blocks of 16 bytes, aligned to 16 bytes +extern int dma_copy16Byte(int ch, void *dest, void *src, unsigned int size); +// Blocks of 4 bytes, aligned to 4 bytes +extern int dma_copy32Bit(int ch, void *dest, void *src, unsigned int size); +// Blocks of 2 bytes, aligned to 2 bytes +extern int dma_copy16Bit(int ch, void *dest, void *src, unsigned int size); +extern int dma_isBusy(int ch); +extern int dma_isFree(int ch); +extern int dma_getFree(void); + +#endif //__DMA_H__ + diff --git a/sdk-modifications/libsrc/dma/dma.mk b/sdk-modifications/libsrc/dma/dma.mk new file mode 100644 index 0000000..0edf343 --- /dev/null +++ b/sdk-modifications/libsrc/dma/dma.mk @@ -0,0 +1,9 @@ +#dma.mk + +SRC += $(DMA_DIR)/dmacopy.c + +SSRC += + +INC += -I$(DMA_DIR) + +CFLAGS +=
\ No newline at end of file diff --git a/sdk-modifications/libsrc/dma/dmacopy.c b/sdk-modifications/libsrc/dma/dmacopy.c new file mode 100644 index 0000000..2c5a2b1 --- /dev/null +++ b/sdk-modifications/libsrc/dma/dmacopy.c @@ -0,0 +1,167 @@ +#include <stdlib.h> +#include "dma.h" +#include "ds2_types.h" + +#define MAX_DMA_NUM 6 /* max 6 channels */ + + +// DMA request source register +#define DMAC_DRSR_RS_BIT 0 +#define DMAC_DRSR_RS_MASK (0x2f << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_AUTO (8 << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_UART0OUT (20 << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_UART0IN (21 << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_SSIOUT (22 << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_SSIIN (23 << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_AICOUT (24 << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_AICIN (25 << DMAC_DRSR_RS_BIT) + #define DMAC_DRSR_RS_MSCOUT (26 << DMAC_DRSR_RS_BIT) //SD0 + #define DMAC_DRSR_RS_MSCIN (27 << DMAC_DRSR_RS_BIT) + + +// DMA channel command register +#define DMAC_DCMD_SAI (1 << 23) /* source address increment */ +#define DMAC_DCMD_DAI (1 << 22) /* dest address increment */ +#define DMAC_DCMD_SWDH_BIT 14 /* source port width */ +#define DMAC_DCMD_SWDH_MASK (0x03 << DMAC_DCMD_SWDH_BIT) + #define DMAC_DCMD_SWDH_32 (0 << DMAC_DCMD_SWDH_BIT) + #define DMAC_DCMD_SWDH_8 (1 << DMAC_DCMD_SWDH_BIT) + #define DMAC_DCMD_SWDH_16 (2 << DMAC_DCMD_SWDH_BIT) +#define DMAC_DCMD_DWDH_BIT 12 /* dest port width */ +#define DMAC_DCMD_DWDH_MASK (0x03 << DMAC_DCMD_DWDH_BIT) + #define DMAC_DCMD_DWDH_32 (0 << DMAC_DCMD_DWDH_BIT) + #define DMAC_DCMD_DWDH_8 (1 << DMAC_DCMD_DWDH_BIT) + #define DMAC_DCMD_DWDH_16 (2 << DMAC_DCMD_DWDH_BIT) +#define DMAC_DCMD_DS_BIT 8 /* transfer data size of a data unit */ +#define DMAC_DCMD_DS_MASK (0x07 << DMAC_DCMD_DS_BIT) + #define DMAC_DCMD_DS_32BIT (0 << DMAC_DCMD_DS_BIT) + #define DMAC_DCMD_DS_8BIT (1 << DMAC_DCMD_DS_BIT) + #define DMAC_DCMD_DS_16BIT (2 << DMAC_DCMD_DS_BIT) + #define DMAC_DCMD_DS_16BYTE (3 << DMAC_DCMD_DS_BIT) + #define DMAC_DCMD_DS_32BYTE (4 << DMAC_DCMD_DS_BIT) +#define DMAC_DCMD_TM (1 << 7) /* transfer mode: 0-single 1-block */ +#define DMAC_DCCSR_TT (1 << 3) /* transfer terminated */ + +#define DMAC_BASE 0xB3020000 +#define REG32(addr) *((volatile u32 *)(addr)) +#define DMAC_DCCSR(n) (DMAC_BASE + (0x10 + (n) * 0x20)) /* DMA control/status */ +#define REG_DMAC_DCCSR(n) REG32(DMAC_DCCSR((n))) + +#define __dmac_channel_transmit_end_detected(n) \ + ( REG_DMAC_DCCSR((n)) & DMAC_DCCSR_TT ) + +/* + * Copy 'size' bytes from src to dest, in blocks of 32 bytes. + * size is in bytes and must be a multiple of 32. + * Both src and dest must be aligned to 32 bytes. + * Returns 0 on failure, non-zero on success. + */ +int dma_copy32Byte(int ch, void *dest, void *src, unsigned int size){ + int test = 0; + if(!(test = dma_request(ch, NULL, 0, + //increment dest addr, increment source addr + DMAC_DCMD_DAI | DMAC_DCMD_SAI | + //set src width 32 bytes, set dest width 32 bytes + DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | + //set copy mode to 32 bytes, copy in blocks + DMAC_DCMD_DS_32BYTE | DMAC_DCMD_TM, + //auto request type + DMAC_DRSR_RS_AUTO))) + { + dma_start(ch, (unsigned int)src, (unsigned int)dest, size); + } + return test; +} + +/* + +int sampleUsage(in ch, void *dest, void *src, unsigned int size){ + //channel 0 is used for mmc stuff, so its best to avoid using it + + //initialize and start copy + if(dma_copy32Byte(ch, dest, src, size)){ + dma_wait_finish(ch);//wait for copy to finish + dma_stop(ch);//must stop after transfer is done to reset channel + return 0; + } + return -1; +} + +*/ + +/* + * Copy 'size' bytes from src to dest, in blocks of 16 bytes. + * size is in bytes and must be a multiple of 16. + * Both src and dest must be aligned to 16 bytes. + * Returns 0 on failure, non-zero on success. + */ +int dma_copy16Byte(int ch, void *dest, void *src, unsigned int size){ + int test = 0; + if(!(test = dma_request(ch, NULL, 0, + DMAC_DCMD_DAI | DMAC_DCMD_SAI | DMAC_DCMD_SWDH_16 | + DMAC_DCMD_DWDH_16 | DMAC_DCMD_DS_16BYTE | DMAC_DCMD_TM, + DMAC_DRSR_RS_AUTO))) + { + dma_start(ch, (unsigned int)src, (unsigned int)dest, size); + } + + return test; +} + +/* + * Copy 'size' bytes from src to dest, in blocks of 32 bits (4 bytes). + * size is in bytes and must be a multiple of 4. + * Both src and dest must be aligned to 32 bits (4 bytes). + * Returns 0 on failure, non-zero on success. + */ +int dma_copy32Bit(int ch, void *dest, void *src, unsigned int size){ + int test = 0; + if(!(test = dma_request(ch, NULL, 0, + DMAC_DCMD_DAI | DMAC_DCMD_SAI | DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | + DMAC_DCMD_DS_32BIT | DMAC_DCMD_TM, + DMAC_DRSR_RS_AUTO))) + { + dma_start(ch, (unsigned int)src, (unsigned int)dest, size); + } + + return test; +} + +/* + * Copy 'size' bytes from src to dest, in blocks of 16 bits (2 bytes). + * size is in bytes and must be a multiple of 2. + * Both src and dest must be aligned to 16 bits (2 bytes). + * Returns 0 on failure, non-zero on success. + */ +int dma_copy16Bit(int ch, void *dest, void *src, unsigned int size){ + int test = 0; + + if(!(test = dma_request(ch, NULL, 0, + DMAC_DCMD_DAI | DMAC_DCMD_SAI | DMAC_DCMD_SWDH_16 | DMAC_DCMD_DWDH_16 | + DMAC_DCMD_DS_16BIT, + DMAC_DRSR_RS_AUTO))) + { + dma_start(ch, (unsigned int)src, (unsigned int)dest, size); + } + + return test; +} + + +//returns if a channel is still copying +int dma_isBusy(int ch){ + if(ch < 1 || ch >= MAX_DMA_NUM) + return 0; + + return !__dmac_channel_transmit_end_detected(ch); +} + +//returns the first non busy channel +int dma_getFree(void){ + int i; + for(i = 1; i < MAX_DMA_NUM; i++){ + if(!dma_isBusy(i)) + return i; + } + return -1; +} diff --git a/sdk-modifications/libsrc/fs/bit_ops.h b/sdk-modifications/libsrc/fs/bit_ops.h new file mode 100644 index 0000000..f823db7 --- /dev/null +++ b/sdk-modifications/libsrc/fs/bit_ops.h @@ -0,0 +1,58 @@ +/* + bit_ops.h + Functions for dealing with conversion of data between types + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _BIT_OPS_H +#define _BIT_OPS_H + +/*----------------------------------------------------------------- +Functions to deal with little endian values stored in u8 arrays +-----------------------------------------------------------------*/ +static inline u16 u8array_to_u16 (const u8* item, int offset) { + return ( item[offset] | (item[offset + 1] << 8)); +} + +static inline u32 u8array_to_u32 (const u8* item, int offset) { + return ( item[offset] | (item[offset + 1] << 8) | (item[offset + 2] << 16) | (item[offset + 3] << 24)); +} + +static inline void u16_to_u8array (u8* item, int offset, u16 value) { + item[offset] = (u8)value; + item[offset + 1] = (u8)(value >> 8); +} + +static inline void u32_to_u8array (u8* item, int offset, u32 value) { + item[offset] = (u8)value; + item[offset + 1] = (u8)(value >> 8); + item[offset + 2] = (u8)(value >> 16); + item[offset + 3] = (u8)(value >> 24); +} + +#endif // _BIT_OPS_H diff --git a/sdk-modifications/libsrc/fs/cache.c b/sdk-modifications/libsrc/fs/cache.c new file mode 100644 index 0000000..2c66e1f --- /dev/null +++ b/sdk-modifications/libsrc/fs/cache.c @@ -0,0 +1,273 @@ +/* + cache.c + The cache is not visible to the user. It should be flushed + when any file is closed or changes are made to the filesystem. + + This cache implements a least-used-page replacement policy. This will + distribute sectors evenly over the pages, so if less than the maximum + pages are used at once, they should all eventually remain in the cache. + This also has the benefit of throwing out old sectors, so as not to keep + too many stale pages around. + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#include <string.h> + +#include "fs_common.h" +#include "fs_cache.h" +#include "disc_io/disc.h" + +#include "mem_allocate.h" + +#define CACHE_FREE 0xFFFFFFFF + +CACHE* _FAT_cache_constructor (u32 numberOfPages, const IO_INTERFACE* discInterface) { + CACHE* cache; + u32 i; + CACHE_ENTRY* cacheEntries; + + if (numberOfPages < 2) { + numberOfPages = 2; + } + + cache = (CACHE*) _FAT_mem_allocate (sizeof(CACHE)); + if (cache == NULL) { + return NULL; + } + + cache->disc = discInterface; + cache->numberOfPages = numberOfPages; + + + cacheEntries = (CACHE_ENTRY*) _FAT_mem_allocate ( sizeof(CACHE_ENTRY) * numberOfPages); + if (cacheEntries == NULL) { + _FAT_mem_free (cache); + return NULL; + } + + for (i = 0; i < numberOfPages; i++) { + cacheEntries[i].sector = CACHE_FREE; + cacheEntries[i].count = 0; + cacheEntries[i].dirty = 0; + } + + cache->cacheEntries = cacheEntries; + + cache->pages = (u8*) _FAT_mem_allocate ( CACHE_PAGE_SIZE * numberOfPages); + if (cache->pages == NULL) { + _FAT_mem_free (cache->cacheEntries); + _FAT_mem_free (cache); + return NULL; + } + + return cache; +} + +void _FAT_cache_destructor (CACHE* cache) { + // Clear out cache before destroying it + _FAT_cache_flush(cache); + + // Free memory in reverse allocation order + _FAT_mem_free (cache->pages); + _FAT_mem_free (cache->cacheEntries); + _FAT_mem_free (cache); + + return; +} + +/* +Retrieve a sector's page from the cache. If it is not found in the cache, +load it into the cache and return the page it was loaded to. +Return CACHE_FREE on error. +*/ +static u32 _FAT_cache_getSector (CACHE* cache, u32 sector) { + u32 i; + CACHE_ENTRY* cacheEntries = cache->cacheEntries; + u32 numberOfPages = cache->numberOfPages; + + u32 leastUsed = 0; + u32 lowestCount = 0xFFFFFFFF; + + for (i = 0; (i < numberOfPages) && (cacheEntries[i].sector != sector); i++) { + // While searching for the desired sector, also search for the leased used page + if ( (cacheEntries[i].sector == CACHE_FREE) || (cacheEntries[i].count < lowestCount) ) { + leastUsed = i; + lowestCount = cacheEntries[i].count; + } + } + + // If it found the sector in the cache, return it + if ((i < numberOfPages) && (cacheEntries[i].sector == sector)) { + // Increment usage counter + cacheEntries[i].count += 1; + return i; + } + + // If it didn't, replace the least used cache page with the desired sector + if ((cacheEntries[leastUsed].sector != CACHE_FREE) && (0xC33CA55A == cacheEntries[leastUsed].dirty)) { + // Write the page back to disc if it has been written to + if (!_FAT_disc_writeSectors (cache->disc, cacheEntries[leastUsed].sector, 1, cache->pages + CACHE_PAGE_SIZE * leastUsed)) { + return CACHE_FREE; + } + cacheEntries[leastUsed].dirty = 0; + } + + // Load the new sector into the cache + if (!_FAT_disc_readSectors (cache->disc, sector, 1, cache->pages + CACHE_PAGE_SIZE * leastUsed)) { + return CACHE_FREE; + } + cacheEntries[leastUsed].sector = sector; + // Increment the usage count, don't reset it + // This creates a paging policy of least used PAGE, not sector + cacheEntries[leastUsed].count += 1; + return leastUsed; +} + +/* +Reads some data from a cache page, determined by the sector number +*/ +bool _FAT_cache_readPartialSector (CACHE* cache, void* buffer, u32 sector, u32 offset, u32 size) { + u32 page; + + if (offset + size > BYTES_PER_READ) { + return false; + } + + page = _FAT_cache_getSector (cache, sector); + if (page == CACHE_FREE) { + return false; + } + + memcpy (buffer, cache->pages + (CACHE_PAGE_SIZE * page) + offset, size); + return true; +} + +/* +Writes some data to a cache page, making sure it is loaded into memory first. +*/ +bool _FAT_cache_writePartialSector (CACHE* cache, const void* buffer, u32 sector, u32 offset, u32 size) { + u32 page; + + if (offset + size > BYTES_PER_READ) { + return false; + } + + page = _FAT_cache_getSector (cache, sector); + if (page == CACHE_FREE) { + return false; + } + + memcpy (cache->pages + (CACHE_PAGE_SIZE * page) + offset, buffer, size); + cache->cacheEntries[page].dirty = 0xC33CA55A; + + return true; +} + +/* +some where call _FAT_cache_writePartialSector to cache sector m , but later, another +place(in fwrite function) directly write data to sector m, in this case, need to +cancel the dirty state of sector m +*/ +void _FAT_cache_writePartialSector_check (CACHE* cache, u32 sector, u32 num, const void* buffer) +{ + u32 i, m; + CACHE_ENTRY* cacheEntries = cache->cacheEntries; + u32 numberOfPages = cache->numberOfPages; + + m = 0; + while(m++ < num) + { + for (i = 0; i < numberOfPages; i++) + { + if(cacheEntries[i].sector == sector) + break; + } + + if(i >= numberOfPages) + return; + + //cache the data + memcpy (cache->pages + (CACHE_PAGE_SIZE * i), buffer, CACHE_PAGE_SIZE); + //cancel the dirty state + cache->cacheEntries[i].dirty = 0; + + sector += 1; + buffer += CACHE_PAGE_SIZE; + } +} + +/* +Writes some data to a cache page, zeroing out the page first +*/ +bool _FAT_cache_eraseWritePartialSector (CACHE* cache, const void* buffer, u32 sector, u32 offset, u32 size) { + u32 page; + + if (offset + size > BYTES_PER_READ) { + return false; + } + + page = _FAT_cache_getSector (cache, sector); + if (page == CACHE_FREE) { + return false; + } + + memset (cache->pages + (CACHE_PAGE_SIZE * page), 0, CACHE_PAGE_SIZE); + memcpy (cache->pages + (CACHE_PAGE_SIZE * page) + offset, buffer, size); + cache->cacheEntries[page].dirty = 0xC33CA55A; + + return true; +} + + +/* +Flushes all dirty pages to disc, clearing the dirty flag. +Also resets all pages' page count to 0. +*/ +bool _FAT_cache_flush (CACHE* cache) { + u32 i; + + for (i = 0; i < cache->numberOfPages; i++) { + if (0xC33CA55A == cache->cacheEntries[i].dirty) { + if (!_FAT_disc_writeSectors (cache->disc, cache->cacheEntries[i].sector, 1, cache->pages + CACHE_PAGE_SIZE * i)) { + return CACHE_FREE; + } + } + cache->cacheEntries[i].count = 0; + cache->cacheEntries[i].dirty = 0; + } + + _FAT_disc_clearStatus( cache->disc ); + return true; +} + +void _FAT_cache_invalidate (CACHE* cache) { + int i; + for (i = 0; i < cache->numberOfPages; i++) { + cache->cacheEntries[i].sector = CACHE_FREE; + cache->cacheEntries[i].count = 0; + cache->cacheEntries[i].dirty = 0; + } +} + diff --git a/sdk-modifications/libsrc/fs/directory.c b/sdk-modifications/libsrc/fs/directory.c new file mode 100644 index 0000000..b30cccc --- /dev/null +++ b/sdk-modifications/libsrc/fs/directory.c @@ -0,0 +1,1005 @@ +/*
+ directory.c
+ Reading, writing and manipulation of the directory structure on
+ a FAT partition
+
+ Copyright (c) 2006 Michael "Chishm" Chisholm
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation and/or
+ other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ 2006-08-14 - Chishm
+ * entryFromPath correctly finds "" and "." now
+
+ 2006-08-17 - Chishm
+ * entryFromPath doesn't look for "" anymore - use "." to refer to the current directory
+
+ 2006-08-19 - Chishm
+ * Fixed entryFromPath bug when looking for "." in root directory
+
+ 2006-10-01 - Chishm
+ * Now clears the whole new cluster when linking in more clusters for a directory
+
+ 2006-10-28 - Chishm
+ * stat returns the hostType for the st_dev value
+*/
+//version 1.1
+//Note: fix bug in _FAT_directory_isValidAlias()
+
+#include <string.h>
+#include <ctype.h>
+
+#include "directory.h"
+#include "fs_common.h"
+#include "partition.h"
+#include "file_allocation_table.h"
+#include "bit_ops.h"
+#include "filetime.h"
+#include "fs_unicode.h"
+
+// Directory entry codes
+#define DIR_ENTRY_LAST 0x00
+#define DIR_ENTRY_FREE 0xE5
+
+
+// Long file name directory entry
+enum LFN_offset {
+ LFN_offset_ordinal = 0x00, // Position within LFN
+ LFN_offset_char0 = 0x01,
+ LFN_offset_char1 = 0x03,
+ LFN_offset_char2 = 0x05,
+ LFN_offset_char3 = 0x07,
+ LFN_offset_char4 = 0x09,
+ LFN_offset_flag = 0x0B, // Should be equal to ATTRIB_LFN
+ LFN_offset_reserved1 = 0x0C, // Always 0x00
+ LFN_offset_checkSum = 0x0D, // Checksum of short file name (alias)
+ LFN_offset_char5 = 0x0E,
+ LFN_offset_char6 = 0x10,
+ LFN_offset_char7 = 0x12,
+ LFN_offset_char8 = 0x14,
+ LFN_offset_char9 = 0x16,
+ LFN_offset_char10 = 0x18,
+ LFN_offset_reserved2 = 0x1A, // Always 0x0000
+ LFN_offset_char11 = 0x1C,
+ LFN_offset_char12 = 0x1E
+};
+const int LFN_offset_table[13]={0x01,0x03,0x05,0x07,0x09,0x0E,0x10,0x12,0x14,0x16,0x18,0x1C,0x1E};
+
+#define LFN_END 0x40
+#define LFN_DEL 0x80
+
+static char* strupr(char* a)
+{
+ char *str;
+
+ str = a;
+ while(*str)
+ {
+ if(*str >= 'a' && *str <= 'z') *str -= 0x20;
+ str += 1;
+ }
+
+ return a;
+}
+
+static char* strlwr(char *a){
+ char *str;
+
+ str = a;
+ while(*str)
+ {
+ if((*str) >= 'A' && (*str) <= 'Z') (*str) = ((*str) -'A' + 'a');
+ str++;
+ }
+ return a;
+}
+
+bool _FAT_directory_isValidLfn (const char* name) {
+ u32 i;
+ u32 nameLength;
+ // Make sure the name is short enough to be valid
+ if ( strnlen(name, MAX_FILENAME_LENGTH) >= MAX_FILENAME_LENGTH) {
+ return false;
+ }
+ // Make sure it doesn't contain any invalid characters
+ if (strpbrk (name, "\\/:*?\"<>|") != NULL) {
+ return false;
+ }
+
+ nameLength = strnlen(name, MAX_FILENAME_LENGTH);
+ // Make sure the name doesn't contain any control codes
+ for (i = 0; i < nameLength; i++) {
+ if ((unsigned char)name[i] < 0x20) {
+ return false;
+ }
+ }
+ // Otherwise it is valid
+ return true;
+}
+bool _FAT_directory_isValidAlias (const char* name) {
+ return false;//disables this function to preserve file name casing
+
+ u32 i;
+ u32 nameLength;
+ const char* dot;
+
+ // Make sure the name is short enough to be valid
+ if ( strnlen(name, MAX_ALIAS_LENGTH) >= MAX_ALIAS_LENGTH) {
+ return false;
+ }
+ // Make sure it doesn't contain any invalid characters
+ if (strpbrk (name, "\\/:;*?\"<>|&+,=[]") != NULL) {
+ return false;
+ }
+
+ //
+ if (strpbrk (name, " ") != NULL) {
+ return false;
+ }
+
+ nameLength = strnlen(name, MAX_ALIAS_LENGTH);
+ // Make sure the name doesn't contain any control codes
+ //if name isn't all capitals, then it is not a valid short name
+ for (i = 0; i < nameLength; i++) {
+ if (name[i] < 0x5A && name[i]!=0x20) {
+ return false;
+ }
+ }
+
+ dot = strchr ( name, '.');
+ // Make sure there is only one '.'
+ if ((dot != NULL) && (strrchr ( name, '.') != dot)) {
+ return false;
+ }
+ // If there is a '.':
+ if (dot != NULL) {
+ // Make sure the filename portion is 1-8 characters long
+ if (((dot - 1 - name) > 8) || ((dot - 1 - name) < 1)) {
+ return false;
+ }
+ // Make sure the extension is 1-3 characters long, if it exists
+ if ((strnlen(dot + 1, MAX_ALIAS_LENGTH) > 3) || (strnlen(dot + 1, MAX_ALIAS_LENGTH) < 1)) {
+ return false;
+ }
+ } else {
+ // Make sure the entire file name is 1-8 characters long
+ if ((nameLength > 8) || (nameLength < 1)) {
+ return false;
+ }
+ }
+
+ // Since we made it through all those tests, it must be valid
+ return true;
+}
+
+static bool _FAT_directory_entryGetAlias (const u8* entryData, char* destName) {
+ int i=0;
+ int j=0;
+
+ destName[0] = '\0';
+ if (entryData[0] != DIR_ENTRY_FREE) {
+ if (entryData[0] == '.') {
+ destName[0] = '.';
+ if (entryData[1] == '.') {
+ destName[1] = '.';
+ destName[2] = '\0';
+ } else {
+ destName[1] = '\0';
+ }
+ } else {
+ // Copy the filename from the dirEntry to the string
+ for (i = 0; (i < 8) && (entryData[DIR_ENTRY_name + i] != ' '); i++) {
+ destName[i] = entryData[DIR_ENTRY_name + i];
+ }
+ // Copy the extension from the dirEntry to the string
+ if (entryData[DIR_ENTRY_extension] != ' ') {
+ destName[i++] = '.';
+ for ( j = 0; (j < 3) && (entryData[DIR_ENTRY_extension + j] != ' '); j++) {
+ destName[i++] = entryData[DIR_ENTRY_extension + j];
+ }
+ }
+ destName[i] = '\0';
+ }
+ }
+
+ return (destName[0] != '\0');
+}
+
+u32 _FAT_directory_entryGetCluster (const u8* entryData) {
+ return u8array_to_u16(entryData,DIR_ENTRY_cluster) | (u8array_to_u16(entryData, DIR_ENTRY_clusterHigh) << 16);
+}
+
+static bool _FAT_directory_incrementDirEntryPosition (PARTITION* partition, DIR_ENTRY_POSITION* entryPosition, bool extendDirectory) {
+ DIR_ENTRY_POSITION position;
+ position = *entryPosition;
+ u32 tempCluster;
+
+ // Increment offset, wrapping at the end of a sector
+ ++ position.offset;
+ if (position.offset == BYTES_PER_READ / DIR_ENTRY_DATA_SIZE) {
+ position.offset = 0;
+ // Increment sector when wrapping
+ ++ position.sector;
+ // But wrap at the end of a cluster
+ if ((position.sector == partition->sectorsPerCluster) && (position.cluster != FAT16_ROOT_DIR_CLUSTER)) {
+ position.sector = 0;
+ // Move onto the next cluster, making sure there is another cluster to go to
+ tempCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if (tempCluster == CLUSTER_EOF) {
+ if (extendDirectory) {
+ tempCluster = _FAT_fat_linkFreeClusterCleared (partition, position.cluster);
+ if (tempCluster == CLUSTER_FREE) {
+ return false; // This will only happen if the disc is full
+ }
+ } else {
+ return false; // Got to the end of the directory, not extending it
+ }
+ }
+ position.cluster = tempCluster;
+ } else if ((position.cluster == FAT16_ROOT_DIR_CLUSTER) && (position.sector == (partition->dataStart - partition->rootDirStart))) {
+ return false; // Got to end of root directory, can't extend it
+ }
+ }
+ *entryPosition = position;
+ return true;
+}
+
+bool _FAT_directory_getNextEntry (PARTITION* partition, DIR_ENTRY* entry) {
+ DIR_ENTRY_POSITION entryStart;
+ DIR_ENTRY_POSITION entryEnd;
+
+ u8 entryData[0x20];
+
+ bool notFound, found;
+ u32 maxSectors;
+ int lfnPos;
+ u8 lfnChkSum, chkSum;
+ char* filename;
+ u16 unicodeFilename[256];
+ bool lfnExists;
+
+ int i;
+
+ lfnChkSum = 0;
+
+ entryStart = entry->dataEnd;
+
+ // Make sure we are using the correct root directory, in case of FAT32
+ if (entryStart.cluster == FAT16_ROOT_DIR_CLUSTER) {
+ entryStart.cluster = partition->rootDirCluster;
+ }
+
+ entryEnd = entryStart;
+ filename = entry->d_name;
+ //unicodeFilename = entry->unicodeFilename;
+ memset( unicodeFilename, 0, 512 );
+
+ // Can only be FAT16_ROOT_DIR_CLUSTER if it is the root directory on a FAT12 or FAT16 partition
+ if (entryStart.cluster == FAT16_ROOT_DIR_CLUSTER) {
+ maxSectors = partition->dataStart - partition->rootDirStart;
+ } else {
+ maxSectors = partition->sectorsPerCluster;
+ }
+
+ lfnExists = false;
+
+ found = false;
+ notFound = false;
+
+ while (!found && !notFound) {
+ if (_FAT_directory_incrementDirEntryPosition (partition, &entryEnd, false) == false) {
+ notFound = true;
+ }
+
+ _FAT_cache_readPartialSector (partition->cache, entryData, _FAT_fat_clusterToSector(partition, entryEnd.cluster) + entryEnd.sector, entryEnd.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+
+ if (entryData[DIR_ENTRY_attributes] == ATTRIB_LFN) {
+ // It's an LFN
+ if (entryData[LFN_offset_ordinal] & LFN_DEL) {
+ lfnExists = false;
+ } else if (entryData[LFN_offset_ordinal] & LFN_END) {
+ // Last part of LFN, make sure it isn't deleted using previous if(Thanks MoonLight)
+ entryStart = entryEnd; // This is the start of a directory entry
+ lfnExists = true;
+ //filename[(entryData[LFN_offset_ordinal] & ~LFN_END) * 13] = '\0'; // Set end of lfn to null character
+ unicodeFilename[(entryData[LFN_offset_ordinal] & ~LFN_END) * 13] = 0x0000;
+ lfnChkSum = entryData[LFN_offset_checkSum];
+ } if (lfnChkSum != entryData[LFN_offset_checkSum]) {
+ lfnExists = false;
+ }
+ //unicodeFilename[0] = 0x0000;
+ if (lfnExists) {
+ lfnPos = ((entryData[LFN_offset_ordinal] & ~LFN_END) - 1) * 13;
+ for (i = 0; i < 13; i++) {
+ unicodeFilename[lfnPos + i] = u8array_to_u16( entryData, LFN_offset_table[i]);
+ // | entryData[LFN_offset_table[i]+1]<<8; // modify this for unicode support;
+ }
+ }
+ } else if (entryData[DIR_ENTRY_attributes] & ATTRIB_VOL) {
+ // This is a volume name, don't bother with it
+ } else if (entryData[0] == DIR_ENTRY_LAST) {
+ notFound = true;
+ } else if ((entryData[0] != DIR_ENTRY_FREE) && (entryData[0] > 0x20) && !(entryData[DIR_ENTRY_attributes] & ATTRIB_VOL)) {
+ if (lfnExists) {
+ // Calculate file checksum
+ chkSum = 0;
+ for (i=0; i < 11; i++) {
+ // NOTE: The operation is an unsigned char rotate right
+ chkSum = ((chkSum & 1) ? 0x80 : 0) + (chkSum >> 1) + entryData[i];
+ }
+ if (chkSum != lfnChkSum) {
+ lfnExists = false;
+ //filename[0] = '\0';
+ //unicodeFilename[0] = 0x0000; // move this line to below(1)
+ }
+ }
+ //short name
+ if (!lfnExists) {
+ entryStart = entryEnd;
+ unicodeFilename[0] = 0x0000; // (1)make sure clear previous search junk
+ // get alias anyway
+ _FAT_directory_entryGetAlias (entryData, filename);
+ strlwr(filename);//convert to lowercase characters
+ }
+ //long name
+ else
+ {
+ _FAT_unicode16_to_utf8 (unicodeFilename, filename);
+ }
+
+ found = true;
+ }
+ }
+
+ // If no file is found, return false
+ if (notFound) {
+ return false;
+ } else {
+ // Fill in the directory entry struct
+ entry->dataStart = entryStart;
+ entry->dataEnd = entryEnd;
+ memcpy (entry->entryData, entryData, DIR_ENTRY_DATA_SIZE);
+ return true;
+ }
+}
+
+bool _FAT_directory_getFirstEntry (PARTITION* partition, DIR_ENTRY* entry, u32 dirCluster) {
+ entry->dataStart.cluster = dirCluster;
+ entry->dataStart.sector = 0;
+ entry->dataStart.offset = -1; // Start before the beginning of the directory
+
+ entry->dataEnd = entry->dataStart;
+
+ return _FAT_directory_getNextEntry (partition, entry);
+}
+
+bool _FAT_directory_getRootEntry (PARTITION* partition, DIR_ENTRY* entry) {
+ entry->dataStart.cluster = 0;
+ entry->dataStart.sector = 0;
+ entry->dataStart.offset = 0;
+
+ entry->dataEnd = entry->dataStart;
+
+ memset (entry->d_name, '\0', MAX_FILENAME_LENGTH);
+ entry->d_name[0] = '.';
+
+ memset (entry->entryData, 0, DIR_ENTRY_DATA_SIZE);
+ memset (entry->entryData, ' ', 11);
+ entry->entryData[0] = '.';
+
+ entry->entryData[DIR_ENTRY_attributes] = ATTRIB_DIR;
+
+ u16_to_u8array (entry->entryData, DIR_ENTRY_cluster, partition->rootDirCluster);
+ u16_to_u8array (entry->entryData, DIR_ENTRY_clusterHigh, partition->rootDirCluster >> 16);
+
+ return true;
+}
+
+bool _FAT_directory_entryFromPosition (PARTITION* partition, DIR_ENTRY* entry) {
+ DIR_ENTRY_POSITION entryStart;
+ DIR_ENTRY_POSITION entryEnd;
+ entryStart = entry->dataStart;
+ entryEnd = entry->dataEnd;
+ bool entryStillValid;
+ bool finished;
+
+ int i;
+ int lfnPos;
+
+ u8 entryData[DIR_ENTRY_DATA_SIZE];
+
+ memset (entry->d_name, '\0', MAX_FILENAME_LENGTH);
+
+ // Create an empty directory entry to overwrite the old ones with
+ for ( entryStillValid = true, finished = false;
+ entryStillValid && !finished;
+ entryStillValid = _FAT_directory_incrementDirEntryPosition (partition, &entryStart, false))
+ {
+ _FAT_cache_readPartialSector (partition->cache, entryData,
+ _FAT_fat_clusterToSector(partition, entryStart.cluster) + entryStart.sector,
+ entryStart.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+
+ if ((entryStart.cluster == entryEnd.cluster)
+ && (entryStart.sector == entryEnd.sector)
+ && (entryStart.offset == entryEnd.offset)) {
+ // Copy the entry data and stop, since this is the last section of the directory entry
+ memcpy (entry->entryData, entryData, DIR_ENTRY_DATA_SIZE);
+ finished = true;
+ } else {
+ // Copy the long file name data
+ lfnPos = ((entryData[LFN_offset_ordinal] & ~LFN_END) - 1) * 13;
+ for (i = 0; i < 13; i++) {
+ entry->d_name[lfnPos + i] = entryData[LFN_offset_table[i]]; // modify this for unicode support;
+ }
+ }
+ }
+
+ if (!entryStillValid) {
+ return false;
+ }
+
+ if ((entryStart.cluster == entryEnd.cluster)
+ && (entryStart.sector == entryEnd.sector)
+ && (entryStart.offset == entryEnd.offset)) {
+ // Since the entry doesn't have a long file name, extract the short filename
+ if (!_FAT_directory_entryGetAlias (entry->entryData, entry->d_name)) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+bool _FAT_directory_entryFromPath (PARTITION* partition, DIR_ENTRY* entry, const char* path, const char* pathEnd) {
+ size_t dirnameLength;
+ const char* pathPosition;
+ const char* nextPathPosition;
+
+ //size_t uniDirnameLength;
+ //u16 uniPath[MAX_FILENAME_LENGTH];
+ //const u16 * uniPathPosition;
+ //const u16 * uniNextPathPosition;
+
+ u32 dirCluster;
+ bool foundFile;
+
+ //char alias[MAX_ALIAS_LENGTH];
+
+ bool found, notFound;
+
+ //_FAT_utf8_to_unicode16( path, uniPath );
+ pathPosition = path;
+ //uniPathPosition = uniPath;
+
+ found = false;
+ notFound = false;
+
+ if (pathEnd == NULL) {
+ // Set pathEnd to the end of the path string
+ pathEnd = strchr (path, '\0');
+ }
+
+ if (pathPosition[0] == DIR_SEPARATOR) {
+ // Start at root directory
+ dirCluster = partition->rootDirCluster;
+ // Consume separator(s)
+ while (pathPosition[0] == DIR_SEPARATOR) {
+ pathPosition++;
+ }
+
+ //while (uniPathPosition[0] == (unsigned short)DIR_SEPARATOR) {
+ // uniPathPosition++;
+ //}
+
+ if (pathPosition >= pathEnd) {
+ _FAT_directory_getRootEntry (partition, entry);
+ found = true;
+ }
+ } else {
+ // Start in current working directory
+ dirCluster = partition->cwdCluster;
+ }
+
+ // If the path is only specifying a directory in the form "."
+ // and this is the root directory, return it
+ //if ((dirCluster == partition->rootDirCluster) && (strncasecmp(".", pathPosition, 2) == 0)) {
+ if ((dirCluster == partition->rootDirCluster) && strlen(pathPosition) == 1 && (strcasecmp(".", pathPosition) == 0)) {
+ _FAT_directory_getRootEntry (partition, entry);
+ found = true;
+ }
+
+ while (!found && !notFound) {
+ // Get the name of the next required subdirectory within the path
+ nextPathPosition = strchr (pathPosition, DIR_SEPARATOR);
+ //uniNextPathPosition = _unistrchr( uniPathPosition, (unsigned short)DIR_SEPARATOR );
+ if (nextPathPosition != NULL) {
+ dirnameLength = nextPathPosition - pathPosition;
+ } else {
+ dirnameLength = strlen(pathPosition);
+ }
+ //if (uniNextPathPosition != 0x0000) {
+ // uniDirnameLength = uniNextPathPosition - uniPathPosition;
+ //} else {
+ // uniDirnameLength = _unistrnlen(uniPathPosition, MAX_FILENAME_LENGTH);
+ //}
+
+ if (dirnameLength > MAX_FILENAME_LENGTH) {
+ // The path is too long to bother with
+ return false;
+ }
+ //if( uniDirnameLength > MAX_FILENAME_LENGTH ) {
+ // return false;
+ //}
+
+ // Look for the directory within the path
+ foundFile = _FAT_directory_getFirstEntry (partition, entry, dirCluster);
+
+ while (foundFile && !found && !notFound) { // It hasn't already found the file
+ // Check if the filename matches
+ //if ((uniDirnameLength == _unistrnlen(entry->unicodeFilename, MAX_FILENAME_LENGTH))
+ // && (_unistrncmp(entry->unicodeFilename, uniPathPosition, uniDirnameLength) == 0)) {
+ // found = true;
+ //}
+
+ //if(!strncasecmp(entry->d_name, pathPosition, dirnameLength))
+ if(strlen(entry->d_name) == dirnameLength && !strncasecmp(entry->d_name, pathPosition, dirnameLength))
+ found = true;
+
+ // Check if the alias matches
+ //_FAT_directory_entryGetAlias (entry->entryData, alias);
+ //if ((dirnameLength == strnlen(alias, MAX_ALIAS_LENGTH))
+ // && (strncasecmp(alias, pathPosition, dirnameLength) == 0)) {
+ // found = true;
+ //}
+
+ if (found && !(entry->entryData[DIR_ENTRY_attributes] & ATTRIB_DIR) && (nextPathPosition != NULL)) {
+ // Make sure that we aren't trying to follow a file instead of a directory in the path
+ found = false;
+ }
+
+ if (!found) {
+ foundFile = _FAT_directory_getNextEntry (partition, entry);
+ }
+ }
+
+ if (!foundFile) {
+ // Check that the search didn't get to the end of the directory
+ notFound = true;
+ found = false;
+ } else if ((nextPathPosition == NULL) || (nextPathPosition >= pathEnd)) {
+ // Check that we reached the end of the path
+ found = true;
+ } else if (entry->entryData[DIR_ENTRY_attributes] & ATTRIB_DIR) {
+ dirCluster = _FAT_directory_entryGetCluster (entry->entryData);
+ pathPosition = nextPathPosition;
+ //uniPathPosition = uniNextPathPosition;
+ // Consume separator(s)
+ while (pathPosition[0] == DIR_SEPARATOR) {
+ pathPosition++;
+ }
+ //while (uniPathPosition[0] == (unsigned short)DIR_SEPARATOR) {
+ // uniPathPosition++;
+ //}
+ // The requested directory was found
+ if (pathPosition >= pathEnd) {
+ found = true;
+ } else {
+ found = false;
+ }
+ }
+ }
+
+ if (found && !notFound) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool _FAT_directory_removeEntry (PARTITION* partition, DIR_ENTRY* entry) {
+ DIR_ENTRY_POSITION entryStart;
+ DIR_ENTRY_POSITION entryEnd;
+ entryStart = entry->dataStart;
+ entryEnd = entry->dataEnd;
+ bool entryStillValid;
+ bool finished;
+
+ u8 entryData[DIR_ENTRY_DATA_SIZE];
+
+ // Create an empty directory entry to overwrite the old ones with
+ for ( entryStillValid = true, finished = false;
+ entryStillValid && !finished;
+ entryStillValid = _FAT_directory_incrementDirEntryPosition (partition, &entryStart, false))
+ {
+ _FAT_cache_readPartialSector (partition->cache, entryData, _FAT_fat_clusterToSector(partition, entryStart.cluster) + entryStart.sector, entryStart.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+ entryData[0] = DIR_ENTRY_FREE;
+ _FAT_cache_writePartialSector (partition->cache, entryData, _FAT_fat_clusterToSector(partition, entryStart.cluster) + entryStart.sector, entryStart.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+ if ((entryStart.cluster == entryEnd.cluster) && (entryStart.sector == entryEnd.sector) && (entryStart.offset == entryEnd.offset)) {
+ finished = true;
+ }
+ }
+
+ if (!entryStillValid) {
+ return false;
+ }
+
+ return true;
+}
+
+static bool _FAT_directory_findEntryGap (PARTITION* partition, DIR_ENTRY* entry, u32 dirCluster, u32 size) {
+ DIR_ENTRY_POSITION gapStart;
+ DIR_ENTRY_POSITION gapEnd;
+
+ u8 entryData[DIR_ENTRY_DATA_SIZE];
+
+ u32 dirEntryRemain;
+
+ bool endOfDirectory, entryStillValid;
+
+ // Scan Dir for free entry
+ gapEnd.offset = 0;
+ gapEnd.sector = 0;
+ gapEnd.cluster = dirCluster;
+
+ gapStart = gapEnd;
+
+ entryStillValid = true;
+ dirEntryRemain = size;
+ endOfDirectory = false;
+
+ while (entryStillValid && !endOfDirectory && (dirEntryRemain > 0)) {
+ _FAT_cache_readPartialSector (partition->cache, entryData, _FAT_fat_clusterToSector(partition, gapEnd.cluster) + gapEnd.sector, gapEnd.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+ if (entryData[0] == DIR_ENTRY_LAST) {
+ gapStart = gapEnd;
+ -- dirEntryRemain;
+ endOfDirectory = true;
+ } else if (entryData[0] == DIR_ENTRY_FREE) {
+ if (dirEntryRemain == size) {
+ gapStart = gapEnd;
+ }
+ -- dirEntryRemain;
+ } else {
+ dirEntryRemain = size;
+ }
+
+ if (!endOfDirectory && (dirEntryRemain > 0)) {
+ entryStillValid = _FAT_directory_incrementDirEntryPosition (partition, &gapEnd, true);
+ }
+ }
+
+ // Make sure the scanning didn't fail
+ if (!entryStillValid) {
+ return false;
+ }
+
+ // Save the start entry, since we know it is valid
+ entry->dataStart = gapStart;
+
+ if (endOfDirectory) {
+ memset (entryData, DIR_ENTRY_LAST, DIR_ENTRY_DATA_SIZE);
+ dirEntryRemain += 1; // Increase by one to take account of End Of Directory Marker
+ while ((dirEntryRemain > 0) && entryStillValid) {
+ // Get the gapEnd before incrementing it, so the second to last one is saved
+ entry->dataEnd = gapEnd;
+ // Increment gapEnd, moving onto the next entry
+ entryStillValid = _FAT_directory_incrementDirEntryPosition (partition, &gapEnd, true);
+ -- dirEntryRemain;
+ // Fill the entry with blanks
+ _FAT_cache_writePartialSector (partition->cache, entryData, _FAT_fat_clusterToSector(partition, gapEnd.cluster) + gapEnd.sector, gapEnd.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+ }
+ if (!entryStillValid) {
+ return false;
+ }
+ } else {
+ entry->dataEnd = gapEnd;
+ }
+
+ return true;
+}
+
+static bool _FAT_directory_entryExists (PARTITION* partition, const char* name, u32 dirCluster) {
+ DIR_ENTRY tempEntry;
+ bool foundFile;
+ //char alias[MAX_ALIAS_LENGTH];
+ u32 dirnameLength;
+ //u16 unicodeName[MAX_FILENAME_LENGTH];
+
+ dirnameLength = strnlen(name, MAX_FILENAME_LENGTH);
+
+ if (dirnameLength >= MAX_FILENAME_LENGTH) {
+ return false;
+ }
+
+ //_FAT_utf8_to_unicode16( name, unicodeName );
+
+ // Make sure the entry doesn't already exist
+ foundFile = _FAT_directory_getFirstEntry (partition, &tempEntry, dirCluster);
+
+ while (foundFile) { // It hasn't already found the file
+ // Check if the filename matches
+ //if (/*(dirnameLength == _unistrnlen(tempEntry.unicodeFilename, MAX_FILENAME_LENGTH))*/
+ // //&& (strcasecmp(tempEntry.filename, name) == 0)) {
+ // /*&&*/ (_unistrncmp( unicodeName, tempEntry.unicodeFilename, MAX_FILENAME_LENGTH ) == 0 ))
+ //{
+ // return true;
+ //}
+ //if(!strncasecmp(name, tempEntry.d_name, dirnameLength))
+ if(!strcasecmp(name, tempEntry.d_name))
+ return true;
+
+ // Check if the alias matches
+ //_FAT_directory_entryGetAlias (tempEntry.entryData, alias);
+ //if ((dirnameLength == strnlen(alias, MAX_ALIAS_LENGTH))
+ // && (strcasecmp(alias, name) == 0)) {
+ // return true;
+ //}
+ foundFile = _FAT_directory_getNextEntry (partition, &tempEntry);
+ }
+ return false;
+}
+
+
+
+bool _FAT_directory_addEntry (PARTITION* partition, DIR_ENTRY* entry, u32 dirCluster) {
+ u32 entrySize;
+ u8 lfnEntry[DIR_ENTRY_DATA_SIZE];
+ s32 i,j; // Must be signed for use when decrementing in for loop
+ char *tmpCharPtr;
+ DIR_ENTRY_POSITION curEntryPos;
+ bool entryStillValid;
+ u8 aliasCheckSum = 0;
+ char alias [MAX_ALIAS_LENGTH];
+ u16 unicodeFilename[256];
+
+ // Make sure the filename is not 0 length
+ if (strnlen (entry->d_name, MAX_FILENAME_LENGTH) < 1) {
+ return false;
+ }
+ // Make sure the filename is at least a valid LFN
+ if ( !(_FAT_directory_isValidLfn (entry->d_name))) {
+ return false;
+ }
+
+ // Remove trailing spaces
+ for (i = strlen (entry->d_name) - 1; (i > 0) && (entry->d_name[i] == ' '); --i) {
+ entry->d_name[i] = '\0';
+ }
+ // Remove leading spaces
+ for (i = 0; (i < strlen (entry->d_name)) && (entry->d_name[i] == ' '); ++i) ;
+ if (i > 0) {
+ memmove (entry->d_name, entry->d_name + i, strlen (entry->d_name + i));
+ }
+
+ // Remove junk in filename
+ i = strlen (entry->d_name);
+ memset (entry->d_name + i, '\0', MAX_FILENAME_LENGTH - i);
+
+ // Make sure the entry doesn't already exist
+ if (_FAT_directory_entryExists (partition, entry->d_name, dirCluster)) {
+ return false;
+ }
+
+ // Clear out alias, so we can generate a new one
+ memset (entry->entryData, ' ', 11);
+
+ if ( strncmp(entry->d_name, ".", MAX_FILENAME_LENGTH) == 0) {
+ // "." entry
+ entry->entryData[0] = '.';
+ entrySize = 1;
+ } else if ( strncmp(entry->d_name, "..", MAX_FILENAME_LENGTH) == 0) {
+ // ".." entry
+ entry->entryData[0] = '.';
+ entry->entryData[1] = '.';
+ entrySize = 1;
+ }else if (_FAT_directory_isValidAlias (entry->d_name)) {
+ entrySize = 1;
+ // Copy into alias
+ for (i = 0, j = 0; (j < 8) && (entry->d_name[i] != '.') && (entry->d_name[i] != '\0'); i++, j++) {
+ entry->entryData[j] = entry->d_name[i];
+ }
+ while (j < 8) {
+ entry->entryData[j] = ' ';
+ ++ j;
+ }
+ if (entry->d_name[i] == '.') {
+ // Copy extension
+ ++ i;
+ while ((entry->d_name[i] != '\0') && (j < 11)) {
+ entry->entryData[j] = entry->d_name[i];
+ ++ i;
+ ++ j;
+ }
+ }
+ while (j < 11) {
+ entry->entryData[j] = ' ';
+ ++ j;
+ }
+ // Short filename
+ strupr (entry->d_name);
+ }else {
+ // Long filename needed
+ //memset( entry->unicodeFilename, 0, 512 );
+ //_FAT_utf8_to_unicode16( (const char*)entry->d_name, entry->unicodeFilename );
+ memset( unicodeFilename, 0, 512 );
+ _FAT_utf8_to_unicode16( (const char*)entry->d_name, unicodeFilename );
+
+ //entrySize = ((strnlen (entry->filename, MAX_FILENAME_LENGTH) + LFN_ENTRY_LENGTH - 1) / LFN_ENTRY_LENGTH) + 1;
+ //entrySize = ((_unistrnlen( entry->unicodeFilename, MAX_FILENAME_LENGTH ) + LFN_ENTRY_LENGTH - 1) / LFN_ENTRY_LENGTH) + 1;
+ entrySize = ((_unistrnlen( unicodeFilename, MAX_FILENAME_LENGTH ) + LFN_ENTRY_LENGTH - 1) / LFN_ENTRY_LENGTH) + 1;
+
+ // Generate alias
+ tmpCharPtr = strrchr (entry->d_name, '.');
+ if (tmpCharPtr == NULL) {
+ tmpCharPtr = strrchr (entry->d_name, '\0');
+ }
+ for (i = 0, j = 0; (j < 6) && (entry->d_name + i < tmpCharPtr); i++) {
+ if ( _uniisalnum((u8)(entry->d_name[i]))) {
+ alias[j] = entry->d_name[i];
+ ++ j;
+ }
+ }
+ while (j < 8) {
+ alias[j] = '_';
+ ++ j;
+ }
+ tmpCharPtr = strrchr (entry->d_name, '.');
+ if (tmpCharPtr != NULL) {
+ alias[8] = '.';
+ // Copy extension
+ while ((tmpCharPtr != '\0') && (j < 12)) {
+ alias[j] = tmpCharPtr[0];
+ ++ tmpCharPtr;
+ ++ j;
+ }
+ alias[j] = '\0';
+ } else {
+ for (j = 8; j < MAX_ALIAS_LENGTH; j++) {
+ alias[j] = '\0';
+ }
+ }
+
+ // Get a valid tail number
+ alias[5] = '~';
+ i = 0;
+ do {
+ i++;
+ alias[6] = '0' + ((i / 10) % 10); // 10's digit
+ alias[7] = '0' + (i % 10); // 1's digit
+ } while (_FAT_directory_entryExists (partition, alias, dirCluster) && (i < 100));
+ if (i == 100) {
+ // Couldn't get a tail number
+ return false;
+ }
+
+ // Make it upper case
+ strupr (alias);
+
+ // Now copy it into the directory entry data
+ memcpy (entry->entryData, alias, 8);
+ memcpy (entry->entryData + 8, alias + 9, 3);
+ for (i = 0; i < 10; i++) {
+ if (entry->entryData[i] < 0x20) {
+ // Replace null and control characters with spaces
+ entry->entryData[i] = 0x20;
+ }
+ }
+ // Generate alias checksum
+ for (i=0; i < 11; i++)
+ {
+ // NOTE: The operation is an unsigned char rotate right
+ aliasCheckSum = ((aliasCheckSum & 1) ? 0x80 : 0) + (aliasCheckSum >> 1) + entry->entryData[i];
+ }
+
+ }
+
+ // Find or create space for the entry
+ if (_FAT_directory_findEntryGap (partition, entry, dirCluster, entrySize) == false) {
+ return false;
+ }
+
+ // Write out directory entry
+ curEntryPos = entry->dataStart;
+
+ for (entryStillValid = true, i = entrySize; entryStillValid && i > 0;
+ entryStillValid = _FAT_directory_incrementDirEntryPosition (partition, &curEntryPos, false), -- i )
+ {
+ if (i > 1) {
+ // Long filename entry
+ lfnEntry[LFN_offset_ordinal] = (i - 1) | (i == entrySize ? LFN_END : 0);
+ for (j = 0; j < 13; j++) {
+ //if (entry->unicodeFilename[(i - 2) * 13 + j] == '\0') {
+ if (unicodeFilename[(i - 2) * 13 + j] == '\0') {
+ //if ((j > 1) && (entry->unicodeFilename[(i - 2) * 13 + (j-1)] == '\0')) {
+ if ((j > 1) && (unicodeFilename[(i - 2) * 13 + (j-1)] == '\0')) {
+ u16_to_u8array (lfnEntry, LFN_offset_table[j], 0xffff); // Padding
+ } else {
+ u16_to_u8array (lfnEntry, LFN_offset_table[j], 0x0000); // Terminating null character
+ }
+ } else {
+ //u16_to_u8array (lfnEntry, LFN_offset_table[j], entry->unicodeFilename[(i - 2) * 13 + j]);
+ u16_to_u8array (lfnEntry, LFN_offset_table[j], unicodeFilename[(i - 2) * 13 + j]);
+ }
+ }
+
+ lfnEntry[LFN_offset_checkSum] = aliasCheckSum;
+ lfnEntry[LFN_offset_flag] = ATTRIB_LFN;
+ lfnEntry[LFN_offset_reserved1] = 0;
+ u16_to_u8array (lfnEntry, LFN_offset_reserved2, 0);
+ _FAT_cache_writePartialSector (partition->cache, lfnEntry, _FAT_fat_clusterToSector(partition, curEntryPos.cluster) + curEntryPos.sector, curEntryPos.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+ } else {
+ // Alias & file data
+ _FAT_cache_writePartialSector (partition->cache, entry->entryData, _FAT_fat_clusterToSector(partition, curEntryPos.cluster) + curEntryPos.sector, curEntryPos.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+ }
+ }
+
+ return true;
+}
+
+bool _FAT_directory_chdir (PARTITION* partition, const char* path) {
+ DIR_ENTRY entry;
+
+ if (!_FAT_directory_entryFromPath (partition, &entry, path, NULL)) {
+ return false;
+ }
+
+ if (!(entry.entryData[DIR_ENTRY_attributes] & ATTRIB_DIR)) {
+ return false;
+ }
+
+ partition->cwdCluster = _FAT_directory_entryGetCluster (entry.entryData);
+
+ return true;
+}
+
+void _FAT_directory_entryStat (PARTITION* partition, DIR_ENTRY* entry, struct stat *st) {
+ // Fill in the stat struct
+ // Some of the values are faked for the sake of compatibility
+ st->st_dev = _FAT_disc_hostType(partition->disc); // The device is the 32bit ioType value
+ st->st_ino = (ino_t)(_FAT_directory_entryGetCluster(entry->entryData)); // The file serial number is the start cluster
+ st->st_mode = (_FAT_directory_isDirectory(entry) ? S_IFDIR : S_IFREG) |
+ (S_IRUSR | S_IRGRP | S_IROTH) |
+ (_FAT_directory_isWritable (entry) ? (S_IWUSR | S_IWGRP | S_IWOTH) : 0) |
+ (_FAT_directory_isHidden (entry) ? S_IHIDDEN : 0); // Mode bits based on dirEntry ATTRIB byte
+ st->st_nlink = 1; // Always one hard link on a FAT file
+ st->st_uid = 1; // Faked for FAT
+ st->st_gid = 2; // Faked for FAT
+ st->st_rdev = st->st_dev;
+ st->st_size = u8array_to_u32 (entry->entryData, DIR_ENTRY_fileSize); // File size
+ st->st_atime = _FAT_filetime_to_time_t (
+ 0,
+ u8array_to_u16 (entry->entryData, DIR_ENTRY_aDate)
+ );
+ //st->st_spare1 = _FAT_directory_isHidden (entry);
+ st->st_mtime = _FAT_filetime_to_time_t (
+ u8array_to_u16 (entry->entryData, DIR_ENTRY_mTime),
+ u8array_to_u16 (entry->entryData, DIR_ENTRY_mDate)
+ );
+ //st->st_spare2 = 0;
+ st->st_ctime = _FAT_filetime_to_time_t (
+ u8array_to_u16 (entry->entryData, DIR_ENTRY_cTime),
+ u8array_to_u16 (entry->entryData, DIR_ENTRY_cDate)
+ );
+ //st->st_spare3 = 0;
+ st->st_blksize = BYTES_PER_READ; // Prefered file I/O block size
+ st->st_blocks = (st->st_size + BYTES_PER_READ - 1) / BYTES_PER_READ; // File size in blocks
+// st->st_spare4[0] = 0;
+// st->st_spare4[1] = 0;
+}
diff --git a/sdk-modifications/libsrc/fs/directory.h b/sdk-modifications/libsrc/fs/directory.h new file mode 100644 index 0000000..654c5d2 --- /dev/null +++ b/sdk-modifications/libsrc/fs/directory.h @@ -0,0 +1,180 @@ +/* + directory.h + Reading, writing and manipulation of the directory structure on + a FAT partition + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _DIRECTORY_H +#define _DIRECTORY_H + +#include <sys/stat.h> + +#include "fs_common.h" +#include "partition.h" + +#define DIR_ENTRY_DATA_SIZE 0x20 +#define MAX_FILENAME_LENGTH 256 +#define MAX_ALIAS_LENGTH 13 +#define LFN_ENTRY_LENGTH 13 +#define FAT16_ROOT_DIR_CLUSTER 0 + +#define DIR_SEPARATOR '/' + +// File attributes +#define S_IHIDDEN 0x00200000 + + +#define ATTRIB_ARCH 0x20 // Archive +#define ATTRIB_DIR 0x10 // Directory +#define ATTRIB_LFN 0x0F // Long file name +#define ATTRIB_VOL 0x08 // Volume +#define ATTRIB_SYS 0x04 // System +#define ATTRIB_HID 0x02 // Hidden +#define ATTRIB_RO 0x01 // Read only + +typedef enum {FT_DIRECTORY, FT_FILE} FILE_TYPE; + +typedef struct { + u32 cluster; + u32 sector; + s32 offset; +} DIR_ENTRY_POSITION; + +typedef struct { + u8 entryData[DIR_ENTRY_DATA_SIZE]; + DIR_ENTRY_POSITION dataStart; // Points to the start of the LFN entries of a file, or the alias for no LFN + DIR_ENTRY_POSITION dataEnd; // Always points to the file/directory's alias entry + char d_name[MAX_FILENAME_LENGTH + MAX_FILENAME_LENGTH*2]; //Store name string using UTF8 coding + //u16 unicodeFilename[MAX_FILENAME_LENGTH]; +} DIR_ENTRY; + +// Directory entry offsets +enum DIR_ENTRY_offset { + DIR_ENTRY_name = 0x00, + DIR_ENTRY_extension = 0x08, + DIR_ENTRY_attributes = 0x0B, + DIR_ENTRY_reserved = 0x0C, + DIR_ENTRY_cTime_ms = 0x0D, + DIR_ENTRY_cTime = 0x0E, + DIR_ENTRY_cDate = 0x10, + DIR_ENTRY_aDate = 0x12, + DIR_ENTRY_clusterHigh = 0x14, + DIR_ENTRY_mTime = 0x16, + DIR_ENTRY_mDate = 0x18, + DIR_ENTRY_cluster = 0x1A, + DIR_ENTRY_fileSize = 0x1C +}; + +/* +Returns true if the file specified by entry is a directory +*/ +static inline bool _FAT_directory_isDirectory (DIR_ENTRY* entry) { + return ((entry->entryData[DIR_ENTRY_attributes] & ATTRIB_DIR) != 0); +} + +static inline bool _FAT_directory_isWritable (DIR_ENTRY* entry) { + return ((entry->entryData[DIR_ENTRY_attributes] & ATTRIB_RO) == 0); +} + +static inline bool _FAT_directory_isDot (DIR_ENTRY* entry) { + return ((entry->d_name[0] == '.') && ((entry->d_name[1] == '\0') || + ((entry->d_name[1] == '.') && entry->d_name[2] == '\0'))); +} + +static inline bool _FAT_directory_isHidden (DIR_ENTRY* entry) { + return ((entry->entryData[DIR_ENTRY_attributes] & ATTRIB_HID) != 0); +} + + +/* +Reads the first directory entry from the directory starting at dirCluster +Places result in entry +entry will be destroyed even if no directory entry is found +Returns true on success, false on failure +*/ +bool _FAT_directory_getFirstEntry (PARTITION* partition, DIR_ENTRY* entry, u32 dirCluster); + +/* +Reads the next directory entry after the one already pointed to by entry +Places result in entry +entry will be destroyed even if no directory entry is found +Returns true on success, false on failure +*/ +bool _FAT_directory_getNextEntry (PARTITION* partition, DIR_ENTRY* entry); + +/* +Gets the directory entry corrsponding to the supplied path +entry will be destroyed even if no directory entry is found +pathEnd specifies the end of the path string, for cutting strings short if needed + specify NULL to use the full length of path + pathEnd is only a suggestion, and the path string will be searched up until the next PATH_SEPARATOR + after pathEND. +Returns true on success, false on failure +*/ +bool _FAT_directory_entryFromPath (PARTITION* partition, DIR_ENTRY* entry, const char* path, const char* pathEnd); + +/* +Changes the current directory to the one specified by path +Returns true on success, false on failure +*/ +bool _FAT_directory_chdir (PARTITION* partition, const char* path); + +/* +Removes the directory entry specified by entry +Assumes that entry is valid +Returns true on success, false on failure +*/ +bool _FAT_directory_removeEntry (PARTITION* partition, DIR_ENTRY* entry); + +/* +Add a directory entry to the directory specified by dirCluster +The fileData, dataStart and dataEnd elements of the DIR_ENTRY struct are +updated with the new directory entry position and alias. +Returns true on success, false on failure +*/ +bool _FAT_directory_addEntry (PARTITION* partition, DIR_ENTRY* entry, u32 dirCluster); + +/* +Get the start cluster of a file from it's entry data +*/ +u32 _FAT_directory_entryGetCluster (const u8* entryData); + +/* +Fill in the file name and entry data of DIR_ENTRY* entry. +Assumes that the entry's dataStart and dataEnd are correct +Returns true on success, false on failure +*/ +bool _FAT_directory_entryFromPosition (PARTITION* partition, DIR_ENTRY* entry); + +/* +Fill in a stat struct based on a file entry +*/ +void _FAT_directory_entryStat (PARTITION* partition, DIR_ENTRY* entry, struct stat *st); + +#endif // _DIRECTORY_H diff --git a/sdk-modifications/libsrc/fs/disc_io/disc.c b/sdk-modifications/libsrc/fs/disc_io/disc.c new file mode 100644 index 0000000..8b50953 --- /dev/null +++ b/sdk-modifications/libsrc/fs/disc_io/disc.c @@ -0,0 +1,194 @@ +/*
+
+ disc.c
+
+ uniformed io-interface to work with Chishm's FAT library
+
+ Written by MightyMax
+
+
+ Copyright (c) 2006 Michael "Chishm" Chisholm
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation and/or
+ other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ 2005-11-06 - Chishm
+ * Added WAIT_CR modifications for NDS
+
+ 2006-02-03 www.neoflash.com
+ * Added SUPPORT_* defines, comment out any of the SUPPORT_* defines in disc_io.h to remove support
+ for the given interface and stop code being linked to the binary
+
+ * Added support for MK2 MMC interface
+
+ * Added disc_Cache* functions
+
+ 2006-02-05 - Chishm
+ * Added Supercard SD support
+
+ 2006-02-26 - Cytex
+ * Added EFA2 support
+
+ 2006-05-18 - Chishm
+ * Rewritten for FATlib disc.c
+
+ 2006-06-19 - Chishm
+ * Changed read and write interface to accept a u32 instead of a u8 for the number of sectors
+
+ 2006-07-11 - Chishm
+ * Removed disc_Cache* functions, since there is now a proper unified cache
+ * Removed SUPPORT_* defines
+ * Rewrote device detection functions
+ * First libfat release
+
+ 2006-07-25 - Chishm
+ * Changed IO_INTERFACEs to const
+
+ 2006-08-02 - Chishm
+ * Added NinjaDS
+*/
+
+#include "disc.h"
+#include "disc_io.h"
+
+// Include known io-interfaces:
+//#include "io_dldi.h"
+//#include "io_mpcf.h"
+//#include "io_m3cf.h"
+//#include "io_m3sd.h"
+//#include "io_sccf.h"
+//#include "io_scsd.h"
+//#include "io_fcsr.h"
+//#include "io_nmmc.h"
+//#include "io_efa2.h"
+//#include "io_mmcf.h"
+//#include "io_njsd.h"
+//#include "io_acekard.h"
+//#include "io_rpg_nand.h"
+//#include "io_rpg_sd.h"
+//#include "iointerface_sc.h" +#include "io_ds2_mmcf.h"
+
+const IO_INTERFACE* ioInterfaces[] = {
+ //&_io_dldi,
+ //&_io_fcsr,
+#ifdef NDS
+ // Place Slot 1 (DS Card) interfaces here
+ //&_io_rpg_sd, //&_io_rpg_nand, /*&_io_acekard, */
+ // Place Slot 2 (GBA Cart) interfaces here
+ //&_io_scsd, &_io_mpcf, &_io_m3cf, &_io_sccf, &_io_m3sd, &_io_fcsr
+ // Experimental Slot 2 interfaces
+ //, &_io_mmcf, &_io_efa2
+ &_io_ds2_mmcf,
+#endif
+};
+
+/*
+
+ Hardware level disc funtions
+
+*/
+
+
+const IO_INTERFACE* _FAT_disc_gbaSlotFindInterface (void)
+{
+ // If running on an NDS, make sure the correct CPU can access
+ // the GBA cart. First implemented by SaTa.
+#ifdef NDS
+ #ifdef ARM9
+ REG_EXMEMCNT &= ~ARM7_OWNS_ROM;
+ #endif
+ #ifdef ARM7
+ REG_EXMEMCNT |= ARM7_OWNS_ROM;
+ #endif
+#endif
+
+ int i;
+
+ for (i = 0; i < (sizeof(ioInterfaces) / sizeof(IO_INTERFACE*)); i++) {
+ if ((ioInterfaces[i]->features & FEATURE_SLOT_GBA) && (ioInterfaces[i]->fn_startup())) {
+ return ioInterfaces[i];
+ }
+ }
+ return NULL;
+}
+
+#ifdef NDS
+/*
+ * Check the DS card slot for a valid memory card interface
+ * If an interface is found, it is set as the default interace
+ * and it returns true. Otherwise the default interface is left
+ * untouched and it returns false.
+ */
+const IO_INTERFACE* _FAT_disc_dsSlotFindInterface (void)
+{
+#ifdef ARM9
+ REG_EXMEMCNT &= ~ARM7_OWNS_CARD;
+#endif
+#ifdef ARM7
+ REG_EXMEMCNT |= ARM7_OWNS_CARD;
+#endif
+ int i;
+
+ for (i = 0; i < (sizeof(ioInterfaces) / sizeof(IO_INTERFACE*)); i++) {
+ if ((ioInterfaces[i]->features & FEATURE_SLOT_NDS) && (ioInterfaces[i]->fn_startup())) {
+ return ioInterfaces[i];
+ }
+ }
+
+ return NULL;
+}
+#endif
+
+/*
+ * When running on an NDS, check the either slot for a valid memory
+ * card interface.
+ * When running on a GBA, call _FAT_disc_gbaSlotFindInterface
+ * If an interface is found, it is set as the default interace
+ * and it returns true. Otherwise the default interface is left
+ * untouched and it returns false.
+ */
+#ifdef NDS
+const IO_INTERFACE* _FAT_disc_findInterface (void)
+{
+#ifdef ARM9
+ REG_EXMEMCNT &= ~(ARM7_OWNS_CARD | ARM7_OWNS_ROM);
+#endif
+#ifdef ARM7
+ REG_EXMEMCNT |= (ARM7_OWNS_CARD | ARM7_OWNS_ROM);
+#endif
+
+ int i;
+
+ for (i = 0; i < (sizeof(ioInterfaces) / sizeof(IO_INTERFACE*)); i++) {
+ if (ioInterfaces[i]->fn_startup()) {
+ return ioInterfaces[i];
+ }
+ }
+
+ return NULL;
+}
+#else
+const IO_INTERFACE* _FAT_disc_findInterface (void)
+{
+ return _FAT_disc_gbaSlotFindInterface();
+}
+#endif
diff --git a/sdk-modifications/libsrc/fs/disc_io/disc.h b/sdk-modifications/libsrc/fs/disc_io/disc.h new file mode 100644 index 0000000..2129359 --- /dev/null +++ b/sdk-modifications/libsrc/fs/disc_io/disc.h @@ -0,0 +1,128 @@ +/* + disc.h + Interface to the low level disc functions. Used by the higher level + file system code. + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + +*/ +#ifndef _DISC_H +#define _DISC_H + +#include "../fs_common.h" +#include "disc_io.h" + +/* +Search for a block based device in the GBA slot. +Return a pointer to a usable interface if one is found, +NULL if not. +*/ +extern const IO_INTERFACE* _FAT_disc_gbaSlotFindInterface (void); + +/* +Search for a block based device in the DS slot. +Return a pointer to a usable interface if one is found, +NULL if not. +*/ +#ifdef NDS +extern const IO_INTERFACE* _FAT_disc_dsSlotFindInterface (void); +#endif + +/* +Search for a block based device in the both slots. +Return a pointer to a usable interface if one is found, +NULL if not. +*/ +extern const IO_INTERFACE* _FAT_disc_findInterface (void); + +/* +Check if a disc is inserted +Return true if a disc is inserted and ready, false otherwise +*/ +static inline bool _FAT_disc_isInserted (const IO_INTERFACE* disc) { + return disc->fn_isInserted(); +} + +/* +Read numSectors sectors from a disc, starting at sector. +numSectors is between 1 and 256 +sector is from 0 to 2^28 +buffer is a pointer to the memory to fill +*/ +//return non-zero is sucess +static inline bool _FAT_disc_readSectors (const IO_INTERFACE* disc, unsigned long sector, unsigned long numSectors, void* buffer) { + return disc->fn_readSectors (sector, numSectors, buffer); +} + +/* +Write numSectors sectors to a disc, starting at sector. +numSectors is between 1 and 256 +sector is from 0 to 2^28 +buffer is a pointer to the memory to read from +*/ +//return non-zero is sucess +static inline bool _FAT_disc_writeSectors (const IO_INTERFACE* disc, unsigned long sector, unsigned long numSectors, const void* buffer) { + return disc->fn_writeSectors (sector, numSectors, buffer); +} + +/* +Reset the card back to a ready state +*/ +static inline bool _FAT_disc_clearStatus (const IO_INTERFACE* disc) { + return disc->fn_clearStatus(); +} + +/* +Initialise the disc to a state ready for data reading or writing +*/ +static inline bool _FAT_disc_startup (const IO_INTERFACE* disc) { + return disc->fn_startup(); +} + +/* +Put the disc in a state ready for power down. +Complete any pending writes and disable the disc if necessary +*/ +static inline bool _FAT_disc_shutdown (const IO_INTERFACE* disc) { + return disc->fn_shutdown(); +} + +/* +Return a 32 bit value unique to each type of interface +*/ +static inline unsigned long _FAT_disc_hostType (const IO_INTERFACE* disc) { + return disc->ioType; +} + +/* +Return a 32 bit value that specifies the capabilities of the disc +*/ +static inline unsigned long _FAT_disc_features (const IO_INTERFACE* disc) { + return disc->features; +} + +#endif // _DISC_H diff --git a/sdk-modifications/libsrc/fs/disc_io/disc_io.h b/sdk-modifications/libsrc/fs/disc_io/disc_io.h new file mode 100644 index 0000000..6ac0c31 --- /dev/null +++ b/sdk-modifications/libsrc/fs/disc_io/disc_io.h @@ -0,0 +1,83 @@ +/* + disc_io.h + Interface template for low level disc functions. + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + + 2006-07-16 - Chishm + * Renamed _CF_USE_DMA to _IO_USE_DMA + * Renamed _CF_ALLOW_UNALIGNED to _IO_ALLOW_UNALIGNED +*/ + +#ifndef _DISC_IO_H +#define _DISC_IO_H + +#include "../fs_common.h" + +//---------------------------------------------------------------------- +// Customisable features + +// Use DMA to read the card, remove this line to use normal reads/writes +// #define _IO_USE_DMA + +// Allow buffers not alligned to 16 bits when reading files. +// Note that this will slow down access speed, so only use if you have to. +// It is also incompatible with DMA +//#define _IO_ALLOW_UNALIGNED + +#define _IO_USE_DMA + +#if defined _IO_USE_DMA && defined _IO_ALLOW_UNALIGNED + #error You can't use both DMA and unaligned memory +#endif + +#define FEATURE_MEDIUM_CANREAD 0x00000001 +#define FEATURE_MEDIUM_CANWRITE 0x00000002 +#define FEATURE_SLOT_GBA 0x00000010 +#define FEATURE_SLOT_NDS 0x00000020 + +typedef bool (* FN_MEDIUM_STARTUP)(void) ; +typedef bool (* FN_MEDIUM_ISINSERTED)(void) ; +typedef bool (* FN_MEDIUM_READSECTORS)(unsigned long sector, unsigned long numSectors, void* buffer) ; +typedef bool (* FN_MEDIUM_WRITESECTORS)(unsigned long sector, unsigned long numSectors, const void* buffer) ; +typedef bool (* FN_MEDIUM_CLEARSTATUS)(void) ; +typedef bool (* FN_MEDIUM_SHUTDOWN)(void) ; + +struct IO_INTERFACE_STRUCT { + unsigned long ioType ; + unsigned long features ; + FN_MEDIUM_STARTUP fn_startup ; + FN_MEDIUM_ISINSERTED fn_isInserted ; + FN_MEDIUM_READSECTORS fn_readSectors ; + FN_MEDIUM_WRITESECTORS fn_writeSectors ; + FN_MEDIUM_CLEARSTATUS fn_clearStatus ; + FN_MEDIUM_SHUTDOWN fn_shutdown ; +} ; + +typedef struct IO_INTERFACE_STRUCT IO_INTERFACE ; + +#endif // define _DISC_IO_H diff --git a/sdk-modifications/libsrc/fs/disc_io/io_ds2_mmcf.c b/sdk-modifications/libsrc/fs/disc_io/io_ds2_mmcf.c new file mode 100644 index 0000000..c432d84 --- /dev/null +++ b/sdk-modifications/libsrc/fs/disc_io/io_ds2_mmcf.c @@ -0,0 +1,13 @@ +//io_ds2_mmcf.c
+#include "io_ds2_mmcf.h"
+
+const IO_INTERFACE _io_ds2_mmcf = {
+ DEVICE_TYPE_DS2_MMCF,
+ FEATURE_MEDIUM_CANREAD | FEATURE_MEDIUM_CANWRITE,
+ (FN_MEDIUM_STARTUP)&_MMC_StartUp,
+ (FN_MEDIUM_ISINSERTED)&_MMC_IsInserted,
+ (FN_MEDIUM_READSECTORS)&_MMC_ReadSectors,
+ (FN_MEDIUM_WRITESECTORS)&_MMC_WriteSectors,
+ (FN_MEDIUM_CLEARSTATUS)&_MMC_ClearStatus,
+ (FN_MEDIUM_SHUTDOWN)&_MMC_ShutDown
+};
diff --git a/sdk-modifications/libsrc/fs/disc_io/io_ds2_mmcf.h b/sdk-modifications/libsrc/fs/disc_io/io_ds2_mmcf.h new file mode 100644 index 0000000..334a9bc --- /dev/null +++ b/sdk-modifications/libsrc/fs/disc_io/io_ds2_mmcf.h @@ -0,0 +1,63 @@ +#ifndef __IO_DS2_H__
+#define __IO_DS2_H__
+
+// 'DS2F'
+#define DEVICE_TYPE_DS2_MMCF 0x46434D4D
+
+#include "disc_io.h"
+#include "ds2_mmc_api.h"
+
+// export interface
+extern const IO_INTERFACE _io_ds2_mmcf ;
+
+/* initialize MMC/SD card */
+static inline bool _MMC_StartUp(void)
+{
+ return MMC_Initialize();
+}
+
+/* read multi blocks from MMC/SD card */
+/* read a single block from MMC/SD card */
+static inline bool _MMC_ReadSectors(u32 sector, u32 numSectors, void* buffer)
+{ + int flag; +
+ if(numSectors > 1)
+ flag= MMC_ReadMultiBlock(sector, numSectors, (unsigned char*)buffer);
+ else
+ flag= MMC_ReadBlock(sector, (unsigned char*)buffer); + return (flag==MMC_NO_ERROR);
+}
+
+/* write multi blocks from MMC/SD card */
+/* write a single block from MMC/SD card */
+static inline bool _MMC_WriteSectors(u32 sector, u32 numSectors, const void* buffer)
+{
+ int flag; + + if(numSectors > 1)
+ flag= MMC_WriteMultiBlock(sector, numSectors, (unsigned char*)buffer);
+ else
+ flag= MMC_WriteBlock(sector, (unsigned char*)buffer); + + return (flag==MMC_NO_ERROR);
+}
+
+static inline bool _MMC_ClearStatus(void)
+{
+ return true;
+}
+
+static inline bool _MMC_ShutDown(void)
+{
+ return true;
+}
+
+static inline bool _MMC_IsInserted(void)
+{
+ return true;
+}
+
+
+#endif //__IO_DS2_H__ + diff --git a/sdk-modifications/libsrc/fs/ds2_fcntl.c b/sdk-modifications/libsrc/fs/ds2_fcntl.c new file mode 100644 index 0000000..0fc00d7 --- /dev/null +++ b/sdk-modifications/libsrc/fs/ds2_fcntl.c @@ -0,0 +1,126 @@ +#include <stdarg.h>
+#include <errno.h>
+#include "ds2_fcntl.h"
+#include "fs_api.h"
+#include "ds2_malloc.h"
+
+
+/*typedef struct {
+ FILE_STRUCT* stream;
+ int flags;
+} _fd_t;
+
+_fd_t* _fd_list = NULL;
+int _fd_count = 0;*/
+
+int open(const char* path, int oflag, ... ) {
+ if(oflag & _O_UNSUPPORTED) {
+ errno = EINVAL;
+ return -1;
+ }
+ // TODO - Deal more correctly with certain flags.
+ FILE_STRUCT* tempFile = fat_fopen(path, "rb");
+ if(oflag & O_CREAT) {
+ if(tempFile == NULL)
+ tempFile = fat_fopen(path, "wb");
+ if(tempFile == NULL)
+ return -1;
+ } else if(tempFile == NULL) {
+ return -1;
+ } else if(oflag & O_TRUNC) {
+ tempFile = fat_fopen(path, "wb");
+ if(tempFile == NULL)
+ return -1;
+ }
+ fat_fclose(tempFile);
+
+ char tempMode[16];
+ if((oflag & 0x3) == O_RDONLY) {
+ sprintf(tempMode, "rb");
+ } else if((oflag & 0x3) == O_WRONLY) {
+ if(oflag & O_APPEND)
+ sprintf(tempMode, "ab");
+ else
+ sprintf(tempMode, "wb");
+ } else if((oflag & 0x3) == O_RDWR) {
+ if(oflag & O_APPEND)
+ sprintf(tempMode, "ab+");
+ else
+ sprintf(tempMode, "rb+");
+ }
+
+ tempFile = fat_fopen(path, tempMode);
+ if(tempFile == NULL)
+ return -1;
+
+ return tempFile -> fd;
+}
+
+int fcntl(int fildes, int cmd, ...) {
+ /*if((fildes < 0) || (fildes >= _fd_count) || (_fd_list[fildes].stream == NULL)) {
+ errno = EINVAL;
+ return -1;
+ }
+ if((cmd <= 0) || (cmd > _F_LAST)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ va_list ap;
+
+ int arg;
+ void* flock;
+ switch(cmd) {
+ case F_SETFD:
+ case F_SETOWN:
+ va_start(ap, cmd);
+ arg = va_arg(ap, int);
+ va_end(ap);
+ break;
+ case F_GETLK:
+ case F_SETLK:
+ va_start(ap, cmd);
+ flock = va_arg(ap, void*);
+ va_end(ap);
+ break;
+ }
+
+ switch(cmd) {
+ case F_DUPFD: // Duplicate file descriptors not supported.
+ errno = EINVAL;
+ return -1;
+ case F_GETFD:
+ return (_fd_list[fildes].flags & _F_FILE_DESC);
+ case F_SETFD:
+ arg &= _F_FILE_DESC;
+ _fd_list[fildes].flags &= ~_F_FILE_DESC;
+ _fd_list[fildes].flags |= arg;
+ return 0;
+ case F_GETFL:
+ return (_fd_list[fildes].flags & (O_ACCMODE | _O_FILE_STATUS));
+ case F_SETFL:
+ arg &= (O_ACCMODE | _O_FILE_STATUS);
+ if(arg & _O_UNSUPPORTED) {
+ errno = EINVAL;
+ return -1;
+ }
+ if((arg & O_ACCMODE) != (_fd_list[fildes].flags & O_ACCMODE)) {
+ errno = EINVAL;
+ return -1;
+ }
+ _fd_list[fildes].flags &= ~(O_ACCMODE | _O_FILE_STATUS);
+ _fd_list[fildes].flags |= arg;
+ return 0;
+ case F_GETOWN:
+ case F_SETOWN:
+ errno = -1;
+ return -1;
+ case F_GETLK:
+ case F_SETLK:
+ case F_SETLKW:
+ return -1;
+ }
+
+ errno = EINVAL;*/
+ return -1;
+}
diff --git a/sdk-modifications/libsrc/fs/ds2_fcntl.h b/sdk-modifications/libsrc/fs/ds2_fcntl.h new file mode 100644 index 0000000..2c69221 --- /dev/null +++ b/sdk-modifications/libsrc/fs/ds2_fcntl.h @@ -0,0 +1,51 @@ +#ifndef __libc_fcntl_h__
+#define __libc_fcntl_h__
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define O_RDONLY (1 << 0)
+#define O_WRONLY (2 << 0)
+#define O_RDWR (3 << 0)
+#define O_APPEND (1 << 2)
+#define O_CREAT (1 << 3)
+#define O_DSYNC (1 << 4)
+#define O_EXCL (1 << 5)
+#define O_NOCTTY (1 << 6)
+#define O_NONBLOCK (1 << 7)
+#define O_RSYNC (1 << 8)
+#define O_SYNC (1 << 9)
+#define O_TRUNC (1 << 10)
+#define O_CREATE O_CREAT
+
+#define O_ACCMODE 0x3
+
+#define F_CLOEXEC (1 << 11)
+
+#define F_DUPFD 1
+#define F_GETFD 2
+#define F_SETFD 3
+#define F_GETFL 4
+#define F_SETFL 5
+#define F_GETLK 6
+#define F_SETLK 7
+#define F_SETLKW 8
+#define F_GETOWN 9
+#define F_SETOWN 10
+#define _F_LAST F_SETOWN
+
+#define _F_FILE_DESC (F_CLOEXEC)
+#define _O_FILE_CREATE (O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC)
+#define _O_FILE_STATUS (O_APPEND | O_DSYNC | O_NONBLOCK | O_RSYNC | O_SYNC)
+#define _O_UNSUPPORTED (0)
+
+extern int open(const char* path, int oflag, ...);
+extern int fcntl(int fildes, int cmd, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/sdk-modifications/libsrc/fs/ds2_unistd.c b/sdk-modifications/libsrc/fs/ds2_unistd.c new file mode 100644 index 0000000..8625eba --- /dev/null +++ b/sdk-modifications/libsrc/fs/ds2_unistd.c @@ -0,0 +1,18 @@ +#include "ds2_unistd.h"
+#include "fs_api.h"
+
+int close(int fildes) {
+ return _FAT_close_r (&__REENT, fildes);
+}
+
+int lseek(int fildes, int offset, int whence) {
+ return _FAT_seek_r (&__REENT, fildes, (int)offset, whence);
+}
+
+int read(int fildes, void* buf, size_t len) {
+ return _FAT_read_r (&__REENT, fildes, (char*)buf, len);
+}
+
+int write(int fildes, const void* buf, size_t len) {
+ return _FAT_write_r (&__REENT, fildes, (const char*)buf, len);
+}
diff --git a/sdk-modifications/libsrc/fs/ds2_unistd.h b/sdk-modifications/libsrc/fs/ds2_unistd.h new file mode 100644 index 0000000..f5efdb1 --- /dev/null +++ b/sdk-modifications/libsrc/fs/ds2_unistd.h @@ -0,0 +1,22 @@ +#ifndef __libc_unistd_h__
+#define __libc_unistd_h__
+
+#include "fs_common.h"
+#include "fatfile.h"
+#include "fs_api.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+extern int close(int fildes);
+extern int lseek(int fildes, int offset, int whence);
+extern int read(int fildes, void* buf, size_t len);
+extern int write(int fildes, const void* buf, size_t len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/sdk-modifications/libsrc/fs/fat.h b/sdk-modifications/libsrc/fs/fat.h new file mode 100644 index 0000000..3ddbac3 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fat.h @@ -0,0 +1,118 @@ +/* + fat.h + Simple functionality for startup, mounting and unmounting of FAT-based devices. + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + + 2006-07-14 + * fatInitialise renamed to fatInit + + 2006-07-16 - Chishm + * Added fatInitDefault +*/ + + +#ifndef _LIBFAT_H +#define _LIBFAT_H + +#ifdef __cplusplus +extern "C" { +#endif + +// When compiling for NDS, make sure NDS is defined +#ifndef NDS + #define NDS +#endif + +#include <nds/jtypes.h> +#include "partition.h" +#include "directory.h" +#include "file_allocation_table.h" +#include "unicode/unicode.h" +#include "fatdir_ex.h" +#include "fatfile_ex.h" + +//typedef enum {PI_DEFAULT, PI_SLOT_1, PI_SLOT_2, PI_CUSTOM} PARTITION_INTERFACE; + +struct IO_INTERFACE_STRUCT ; + +/* +Initialise any inserted block-devices. +Add the fat device driver to the devoptab, making it available for standard file functions. +cacheSize: The number of pages to allocate for each inserted block-device +setAsDefaultDevice: if true, make this the default device driver for file operations +*/ +bool fatInit (u32 cacheSize, bool setAsDefaultDevice); + +/* +Calls fatInit with setAsDefaultDevice = true and cacheSize optimised for the host system. +*/ +bool fatInitDefault (void); + +/* +Special initialize for RPG card +*/ +bool fatInitRPG (void); + +/* +Mount the device specified by partitionNumber +PD_DEFAULT is not allowed, use _FAT_partition_setDefaultDevice +PD_CUSTOM is not allowed, use _FAT_partition_mountCustomDevice +*/ +bool fatMountNormalInterface (PARTITION_INTERFACE partitionNumber, u32 cacheSize); + +/* +Mount a partition on a custom device +*/ +bool fatMountCustomInterface (struct IO_INTERFACE_STRUCT* device, u32 cacheSize); + +/* +Unmount the partition specified by partitionNumber +If there are open files, it will fail +*/ +bool fatUnmount (PARTITION_INTERFACE partitionNumber); + + +/* +Forcibly unmount the partition specified by partitionNumber +Any open files on the partition will become invalid +The cache will be invalidated, and any unflushed writes will be lost +*/ +bool fatUnsafeUnmount (PARTITION_INTERFACE partitionNumber); + +/* +Set the default device for access by fat: and fat0: +PD_DEFAULT is unallowed. +Doesn't do anything useful on GBA, since there is only one device +*/ +bool fatSetDefaultInterface (PARTITION_INTERFACE partitionNumber); + +#ifdef __cplusplus +} +#endif + +#endif // _LIBFAT_H diff --git a/sdk-modifications/libsrc/fs/fat_misc.c b/sdk-modifications/libsrc/fs/fat_misc.c new file mode 100644 index 0000000..c0f62ac --- /dev/null +++ b/sdk-modifications/libsrc/fs/fat_misc.c @@ -0,0 +1,138 @@ +//fat_misc.c +//v1.0 + +#include "fat_misc.h"
+#include "fs_api.h" + +static unsigned int _usedSecNums;
+
+static int strFindFromEnd( char *str,char strValue )
+{
+ int pos = 0,i = 0,strNum = 0;
+ while(1)
+ {
+ if( (*str)!=0 )
+ {
+ strNum++;
+ str++;
+ }
+ else
+ {
+ break;
+ }
+ }
+ pos = strNum;
+ for( i=0;i<strNum;i++ )
+ {
+ str--;
+ pos--;
+ if( (*str) == strValue||(*str) == ':' )
+ {
+ return pos;
+ }
+ if( (*str)== 0 )
+ {
+ return -1;
+ }
+ }
+ return -1;
+}
+
+int getDirSize( const char * path, int includeSubdirs, unsigned int * dirSize )
+{
+ char dirPath[MAX_FILENAME_LENGTH]; + unsigned int size = 0;
+ if( "" == path ){
+ return false;
+ } +
+ memset( dirPath,0,MAX_FILENAME_LENGTH );
+ strcpy( dirPath,path );
+
+ if( dirPath[strlen(dirPath)-1] != '/' )
+ dirPath[strlen(dirPath)] = '/';
+ if( strlen(dirPath) > MAX_FILENAME_LENGTH )
+ return false;
+
+ DIR_STATE_STRUCT *dir;
dir = fat_opendir((const char*)dirPath);
+ if (dir == NULL)
+ return false;
+ struct stat stat_buf; + DIR_ENTRY *currentEntry; + char* filename; + + while(fat_readdir_ex(dir, &stat_buf) != NULL)
+ {
+ filename = currentEntry->d_name; + + if (strcmp(filename, ".") == 0 || strcmp(filename, "..") == 0)
+ continue;
+
+ if (!(stat_buf.st_mode & S_IFDIR)) {
+ size += (stat_buf.st_size+511)/512;
+ _usedSecNums +=(stat_buf.st_size+511)/512;
+ } + else if (includeSubdirs) + {
+ // calculate the size recursively
+ unsigned int subDirSize = 0; + char dirPathBuffer[MAX_FILENAME_LENGTH]; +
+ memset( dirPathBuffer,0,MAX_FILENAME_LENGTH );
+ strcpy( dirPathBuffer,dirPath );
+ memset( dirPath,0,MAX_FILENAME_LENGTH );
+ sprintf( dirPath,"%s%s",dirPathBuffer,filename );
+ int succ = getDirSize( dirPath, includeSubdirs, &subDirSize );
+ if( succ ) {
+ size += (subDirSize+511)/512;
+ _usedSecNums +=(subDirSize+511)/512;
+ }
+ memset( dirPath,0,MAX_FILENAME_LENGTH );
+ strcpy( dirPath,dirPathBuffer );
+ }
+ } + + fat_closedir(dir);
+
+ *dirSize = size;
+ return true;
+}
+
+int fat_getDiskTotalSpace( char * diskName, unsigned int * diskSpace )
+{
+ if( !strcmp("",diskName) )
+ return false;
+ + unsigned int len = strlen(diskName);
+ if( *(diskName+len-1) != '/' ){
+ *(diskName+len) = '/';
+ }
+
+ PARTITION * diskPartition = _FAT_partition_getPartitionFromPath( diskName );
+ if( NULL == diskPartition )
+ return false;
+
+ *diskSpace = (unsigned int)diskPartition->numberOfSectors;
+ return true;
+}
+
+int fat_getDiskSpaceInfo( char * diskName, unsigned int * total, unsigned int * used, unsigned int * freeSpace ) +{
+ _usedSecNums = 0;
+ + if( !strcmp("",diskName) )
+ return -1;
+ if( !fat_getDiskTotalSpace(diskName, total) )
+ return -1;
+ if( !getDirSize(diskName, true, used) )
+ return -1;
+
+ *used = _usedSecNums;
+ if( *total <= *used ){
+ *freeSpace = 0;
+ }else{
+ *freeSpace = *total - *used;
+ }
+
+ return 0;
+}
diff --git a/sdk-modifications/libsrc/fs/fat_misc.h b/sdk-modifications/libsrc/fs/fat_misc.h new file mode 100644 index 0000000..05db0bb --- /dev/null +++ b/sdk-modifications/libsrc/fs/fat_misc.h @@ -0,0 +1,38 @@ +/*--------------------------------------------------------------------------------
+Copyright (C) 2007 Acekard, www.acekard.com
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+---------------------------------------------------------------------------------*/
+#ifndef __FAT_MISC_H__
+#define __FAT_MISC_H__
+ +#include "fs_common.h"
+#include "directory.h" +
typedef enum _SRC_FILE_MODE
+{
+ SFM_COPY = 0,
+ SFM_CUT = 1
+}SRC_FILE_MODE;
+ +
+extern bool fat_getDiskSpaceInfo( char * diskName, unsigned int *total, unsigned int *used, unsigned int *freeSpace );
+
+#endif //__FAT_MISC_H__
diff --git a/sdk-modifications/libsrc/fs/fatdir.c b/sdk-modifications/libsrc/fs/fatdir.c new file mode 100644 index 0000000..dc9b914 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatdir.c @@ -0,0 +1,672 @@ +/*
+ fatdir.c
+
+ Functions used by the newlib disc stubs to interface with
+ this library
+
+ Copyright (c) 2006 Michael "Chishm" Chisholm
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation and/or
+ other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ 2006-08-13 - Chishm
+ * Moved all externally visible directory related functions to fatdir
+ * Added _FAT_mkdir_r
+
+ 2006-08-14 - Chishm
+ * Added directory iterator functions
+
+ 2006-08-19 - Chishm
+ * Updated dirnext return values to return correctly
+
+ 2006-10-01 - Chishm
+ * Now clears the whole cluster when creating a new directory, bug found by Hermes
+
+ 2007-01-10 - Chishm
+ * Updated directory iterator functions for DevkitPro r20
+*/
+
+/*
+ 2010.06.30
+ * Modify _FAT_diropen_r,
+*/
+
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <sys/dir.h>
+
+#include "fatdir.h"
+
+#include "fs_cache.h"
+#include "file_allocation_table.h"
+#include "partition.h"
+#include "directory.h"
+#include "bit_ops.h"
+#include "filetime.h"
+#include "fs_unicode.h"
+
+
+int _FAT_stat_r (struct _reent *r, const char *path, struct stat *st) {
+ PARTITION* partition = NULL;
+
+ DIR_ENTRY dirEntry;
+
+ // Get the partition this file is on
+ partition = _FAT_partition_getPartitionFromPath (path);
+
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return -1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (path, ':') != NULL) {
+ path = strchr (path, ':') + 1;
+ }
+ if (strchr (path, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Search for the file on the disc
+ if (!_FAT_directory_entryFromPath (partition, &dirEntry, path, NULL)) {
+ r->_errno = ENOENT;
+ return -1;
+ }
+
+ // Fill in the stat struct
+ _FAT_directory_entryStat (partition, &dirEntry, st);
+
+ return 0;
+}
+
+int _FAT_getshortname_r (struct _reent *r, const char *name, char *outName) {
+ PARTITION* partition = NULL;
+ DIR_ENTRY DirEntry;
+ u32 dirCluster;
+
+ // Get the partition this directory is on
+ partition = _FAT_partition_getPartitionFromPath (name);
+
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return 1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (name, ':') != NULL) {
+ name = strchr (name, ':') + 1;
+ }
+ if (strchr (name, ':') != NULL) {
+ r->_errno = EINVAL;
+ return 1;
+ }
+
+ // Search for the file on the disc
+ if (!_FAT_directory_entryFromPath (partition, &DirEntry, name, NULL)) {
+ r->_errno = ENOENT;
+ return 1;
+ }
+
+ strcpy(outName, DirEntry.entryData);
+ return 1;
+}
+
+int _FAT_link_r (struct _reent *r, const char *existing, const char *newLink) {
+ r->_errno = ENOTSUP;
+ return -1;
+}
+
+int _FAT_unlink_r (struct _reent *r, const char *path) {
+ PARTITION* partition = NULL;
+ DIR_ENTRY dirEntry;
+ DIR_ENTRY dirContents;
+ u32 cluster;
+ bool nextEntry;
+ bool errorOccured = false;
+
+ // Get the partition this directory is on
+ partition = _FAT_partition_getPartitionFromPath (path);
+
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return -1;
+ }
+
+ // Make sure we aren't trying to write to a read-only disc
+ if (partition->readOnly) {
+ r->_errno = EROFS;
+ return -1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (path, ':') != NULL) {
+ path = strchr (path, ':') + 1;
+ }
+ if (strchr (path, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Search for the file on the disc
+ if (!_FAT_directory_entryFromPath (partition, &dirEntry, path, NULL)) {
+ r->_errno = ENOENT;
+ return -1;
+ }
+
+ cluster = _FAT_directory_entryGetCluster (dirEntry.entryData);
+
+
+ // If this is a directory, make sure it is empty
+ if (_FAT_directory_isDirectory (&dirEntry)) {
+ nextEntry = _FAT_directory_getFirstEntry (partition, &dirContents, cluster);
+
+ while (nextEntry) {
+ if (!_FAT_directory_isDot (&dirContents)) {
+ // The directory had something in it that isn't a reference to itself or it's parent
+ r->_errno = EPERM;
+ return -1;
+ }
+ nextEntry = _FAT_directory_getNextEntry (partition, &dirContents);
+ }
+ }
+
+ if (cluster != CLUSTER_FREE) {
+ // Remove the cluster chain for this file
+ if (!_FAT_fat_clearLinks (partition, cluster)) {
+ r->_errno = EIO;
+ errorOccured = true;
+ }
+ }
+
+ // Remove the directory entry for this file
+ if (!_FAT_directory_removeEntry (partition, &dirEntry)) {
+ r->_errno = EIO;
+ errorOccured = true;
+ }
+
+ // Flush any sectors in the disc cache
+ if (!_FAT_cache_flush(partition->cache)) {
+ r->_errno = EIO;
+ errorOccured = true;
+ }
+
+ if (errorOccured) {
+ return -1;
+ } else {
+ return 0;
+ }
+}
+
+int _FAT_chdir_r (struct _reent *r, const char *path) {
+ PARTITION* partition = NULL;
+
+ // Get the partition this directory is on
+ partition = _FAT_partition_getPartitionFromPath (path);
+
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return -1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (path, ':') != NULL) {
+ path = strchr (path, ':') + 1;
+ }
+ if (strchr (path, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Set the default device to match this one
+ if (!_FAT_partition_setDefaultPartition (partition)) {
+ r->_errno = ENOENT;
+ return -1;
+ }
+
+ // Try changing directory
+ if (_FAT_directory_chdir (partition, path)) {
+ // Successful
+ return 0;
+ } else {
+ // Failed
+ r->_errno = ENOTDIR;
+ return -1;
+ }
+}
+
+int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName) {
+ PARTITION* partition = NULL;
+ DIR_ENTRY oldDirEntry;
+ DIR_ENTRY newDirEntry;
+ const char *pathEnd;
+ u32 dirCluster;
+
+ // Get the partition this directory is on
+ partition = _FAT_partition_getPartitionFromPath (oldName);
+
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return -1;
+ }
+
+ // Make sure the same partition is used for the old and new names
+ if (partition != _FAT_partition_getPartitionFromPath (newName)) {
+ r->_errno = EXDEV;
+ return -1;
+ }
+
+ // Make sure we aren't trying to write to a read-only disc
+ if (partition->readOnly) {
+ r->_errno = EROFS;
+ return -1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (oldName, ':') != NULL) {
+ oldName = strchr (oldName, ':') + 1;
+ }
+ if (strchr (oldName, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+ if (strchr (newName, ':') != NULL) {
+ newName = strchr (newName, ':') + 1;
+ }
+ if (strchr (newName, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Search for the file on the disc
+ if (!_FAT_directory_entryFromPath (partition, &oldDirEntry, oldName, NULL)) {
+ r->_errno = ENOENT;
+ return -1;
+ }
+
+ // Make sure there is no existing file / directory with the new name
+ if (_FAT_directory_entryFromPath (partition, &newDirEntry, newName, NULL)) {
+ r->_errno = EEXIST;
+ return -1;
+ }
+
+ // Create the new file entry
+ // Get the directory it has to go in
+ pathEnd = strrchr (newName, DIR_SEPARATOR);
+ if (pathEnd == NULL) {
+ // No path was specified
+ dirCluster = partition->cwdCluster;
+ pathEnd = newName;
+ } else {
+ // Path was specified -- get the right dirCluster
+ // Recycling newDirEntry, since it needs to be recreated anyway
+ if (!_FAT_directory_entryFromPath (partition, &newDirEntry, newName, pathEnd) ||
+ !_FAT_directory_isDirectory(&newDirEntry)) {
+ r->_errno = ENOTDIR;
+ return -1;
+ }
+ dirCluster = _FAT_directory_entryGetCluster (newDirEntry.entryData);
+ // Move the pathEnd past the last DIR_SEPARATOR
+ pathEnd += 1;
+ }
+
+ // Copy the entry data
+ memcpy (&newDirEntry, &oldDirEntry, sizeof(DIR_ENTRY));
+
+ // Set the new name
+ strncpy (newDirEntry.d_name, pathEnd, MAX_FILENAME_LENGTH - 1);
+
+ // Write the new entry
+ if (!_FAT_directory_addEntry (partition, &newDirEntry, dirCluster)) {
+ r->_errno = ENOSPC;
+ return -1;
+ }
+
+ // Remove the old entry
+ if (!_FAT_directory_removeEntry (partition, &oldDirEntry)) {
+ r->_errno = EIO;
+ return -1;
+ }
+
+ // Flush any sectors in the disc cache
+ if (!_FAT_cache_flush (partition->cache)) {
+ r->_errno = EIO;
+ return -1;
+ }
+
+ return 0;
+}
+
+int _FAT_hideAttrib_r (struct _reent *r, const char *name, u8 hide) {
+ PARTITION* partition = NULL;
+ DIR_ENTRY oldDirEntry;
+ DIR_ENTRY newDirEntry;
+ u32 dirCluster;
+
+ // Get the partition this directory is on
+ partition = _FAT_partition_getPartitionFromPath (name);
+
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return -1;
+ }
+
+ // Make sure we aren't trying to write to a read-only disc
+ if (partition->readOnly) {
+ r->_errno = EROFS;
+ return -1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (name, ':') != NULL) {
+ name = strchr (name, ':') + 1;
+ }
+ if (strchr (name, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Search for the file on the disc
+ if (!_FAT_directory_entryFromPath (partition, &oldDirEntry, name, NULL)) {
+ r->_errno = ENOENT;
+ return -1;
+ }
+
+ // Create the new file entry
+ // Get the directory it has to go in
+ memcpy (&newDirEntry, &oldDirEntry, sizeof(DIR_ENTRY));
+
+ // No path was specified
+ dirCluster = partition->cwdCluster;
+
+ // Remove the old entry hopefully doesn't screw things up...
+ if (!_FAT_directory_removeEntry (partition, &oldDirEntry)) {
+ r->_errno = EIO;
+ return -1;
+ }
+
+ // Set the new attribute
+ if(hide)
+ newDirEntry.entryData[DIR_ENTRY_attributes] |= ATTRIB_HID;
+ else
+ newDirEntry.entryData[DIR_ENTRY_attributes] &= ~ATTRIB_HID;
+
+ // Write the new entry
+ if (!_FAT_directory_addEntry (partition, &newDirEntry, dirCluster)) {
+ r->_errno = ENOSPC;
+ return -1;
+ }
+
+ // Flush any sectors in the disc cache
+ if (!_FAT_cache_flush (partition->cache)) {
+ r->_errno = EIO;
+ return -1;
+ }
+
+ return 0;
+}
+
+int _FAT_mkdir_r (struct _reent *r, const char *path, int mode) {
+ PARTITION* partition = NULL;
+ bool fileExists;
+ DIR_ENTRY dirEntry;
+ const char* pathEnd;
+ u32 parentCluster, dirCluster;
+ u8 newEntryData[DIR_ENTRY_DATA_SIZE];
+
+ partition = _FAT_partition_getPartitionFromPath (path);
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return -1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (path, ':') != NULL) {
+ path = strchr (path, ':') + 1;
+ }
+ if (strchr (path, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Search for the file/directory on the disc
+ fileExists = _FAT_directory_entryFromPath (partition, &dirEntry, path, NULL);
+
+ // Make sure it doesn't exist
+ if (fileExists) {
+ r->_errno = EEXIST;
+ return -1;
+ }
+
+ if (partition->readOnly) {
+ // We can't write to a read-only partition
+ r->_errno = EROFS;
+ return -1;
+ }
+
+ // Get the directory it has to go in
+ pathEnd = strrchr (path, DIR_SEPARATOR);
+ if (pathEnd == NULL) {
+ // No path was specified
+ parentCluster = partition->cwdCluster;
+ pathEnd = path;
+ } else {
+ // Path was specified -- get the right parentCluster
+ // Recycling dirEntry, since it needs to be recreated anyway
+ if (!_FAT_directory_entryFromPath (partition, &dirEntry, path, pathEnd) ||
+ !_FAT_directory_isDirectory(&dirEntry)) {
+ r->_errno = ENOTDIR;
+ return -1;
+ }
+ parentCluster = _FAT_directory_entryGetCluster (dirEntry.entryData);
+ // Move the pathEnd past the last DIR_SEPARATOR
+ pathEnd += 1;
+ }
+
+ // Create the entry data
+ strncpy (dirEntry.d_name, pathEnd, MAX_FILENAME_LENGTH - 1);
+ memset (dirEntry.entryData, 0, DIR_ENTRY_DATA_SIZE);
+
+ // Set the creation time and date
+ dirEntry.entryData[DIR_ENTRY_cTime_ms] = 0;
+ u16_to_u8array (dirEntry.entryData, DIR_ENTRY_cTime, _FAT_filetime_getTimeFromRTC());
+ u16_to_u8array (dirEntry.entryData, DIR_ENTRY_cDate, _FAT_filetime_getDateFromRTC());
+
+ // Set the directory attribute
+ dirEntry.entryData[DIR_ENTRY_attributes] = ATTRIB_DIR;
+
+ // Get a cluster for the new directory
+ dirCluster = _FAT_fat_linkFreeClusterCleared (partition, CLUSTER_FREE);
+ if (dirCluster == CLUSTER_FREE) {
+ // No space left on disc for the cluster
+ r->_errno = ENOSPC;
+ return -1;
+ }
+ u16_to_u8array (dirEntry.entryData, DIR_ENTRY_cluster, dirCluster);
+ u16_to_u8array (dirEntry.entryData, DIR_ENTRY_clusterHigh, dirCluster >> 16);
+
+ // Write the new directory's entry to it's parent
+ if (!_FAT_directory_addEntry (partition, &dirEntry, parentCluster)) {
+ r->_errno = ENOSPC;
+ return -1;
+ }
+
+ // Create the dot entry within the directory
+ memset (newEntryData, 0, DIR_ENTRY_DATA_SIZE);
+ memset (newEntryData, ' ', 11);
+ newEntryData[DIR_ENTRY_name] = '.';
+ newEntryData[DIR_ENTRY_attributes] = ATTRIB_DIR;
+ u16_to_u8array (newEntryData, DIR_ENTRY_cluster, dirCluster);
+ u16_to_u8array (newEntryData, DIR_ENTRY_clusterHigh, dirCluster >> 16);
+
+ // Write it to the directory, erasing that sector in the process
+ _FAT_cache_eraseWritePartialSector ( partition->cache, newEntryData,
+ _FAT_fat_clusterToSector (partition, dirCluster), 0, DIR_ENTRY_DATA_SIZE);
+
+
+ // Create the double dot entry within the directory
+ newEntryData[DIR_ENTRY_name + 1] = '.';
+ u16_to_u8array (newEntryData, DIR_ENTRY_cluster, parentCluster);
+ u16_to_u8array (newEntryData, DIR_ENTRY_clusterHigh, parentCluster >> 16);
+
+ // Write it to the directory
+ _FAT_cache_writePartialSector ( partition->cache, newEntryData,
+ _FAT_fat_clusterToSector (partition, dirCluster), DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+
+ // Flush any sectors in the disc cache
+ if (!_FAT_cache_flush(partition->cache)) {
+ r->_errno = EIO;
+ return -1;
+ }
+
+ return 0;
+}
+
+DIR_STATE_STRUCT* _FAT_diropen_r(struct _reent *r, DIR_STATE_STRUCT *dirState, const char *path) {
+ DIR_ENTRY dirEntry;
+ DIR_STATE_STRUCT* state = dirState;
+ bool fileExists;
+ const char* root_path= "/";
+
+ state->partition = _FAT_partition_getPartitionFromPath (path);
+ if (state->partition == NULL) {
+ r->_errno = ENODEV;
+ return NULL;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (path, ':') != NULL) {
+ path = strchr (path, ':') + 1;
+ }
+ if (strchr (path, ':') != NULL) {
+ r->_errno = EINVAL;
+ return NULL;
+ }
+
+ if('\0' == path[0]) path = root_path;
+
+ // Get the start cluster of the directory
+ fileExists = _FAT_directory_entryFromPath (state->partition, &dirEntry, path, NULL);
+ if (!fileExists) {
+ r->_errno = ENOENT;
+ return NULL;
+ }
+
+ // Make sure it is a directory
+ if (! _FAT_directory_isDirectory (&dirEntry)) {
+ r->_errno = ENOTDIR;
+ return NULL;
+ }
+
+ // Save the start cluster for use when resetting the directory data
+ state->startCluster = _FAT_directory_entryGetCluster (dirEntry.entryData);
+
+ //Entry location pointer
+ state->posEntry = 0;
+
+// // Get the first entry for use with a call to dirnext
+// state->validEntry =
+// _FAT_directory_getFirstEntry (state->partition, &(state->currentEntry), state->startCluster);
+ state->validEntry = false;
+
+ // We are now using this entry
+ state->inUse = true;
+ return state;
+}
+
+int _FAT_dirreset_r (struct _reent *r, DIR_STATE_STRUCT *dirState) {
+ DIR_STATE_STRUCT* state = dirState;
+
+ // Make sure we are still using this entry
+ if (!state->inUse) {
+ r->_errno = EBADF;
+ return -1;
+ }
+
+ // Get the first entry for use with a call to dirnext
+// state->validEntry =
+// _FAT_directory_getFirstEntry (state->partition, &(state->currentEntry), state->startCluster);
+
+ state->posEntry = 0;
+
+ return 0;
+}
+
+int _FAT_dirnext_r (struct _reent *r, DIR_STATE_STRUCT *dirState, struct stat *filestat) {
+ DIR_STATE_STRUCT* state = dirState;
+
+ // Make sure we are still using this entry
+ if (!state->inUse) {
+ r->_errno = EBADF;
+ return -1;
+ }
+
+ // Make sure there is another file to report on
+// if (!state->validEntry) {
+// r->_errno = ENOENT;
+// return -1;
+// }
+
+ if(0 == state->posEntry) {
+ state->validEntry = _FAT_directory_getFirstEntry (state->partition, &(state->currentEntry), state->startCluster);
+ }
+ else
+ state->validEntry = _FAT_directory_getNextEntry (state->partition, &(state->currentEntry));
+
+ state->posEntry += 1;
+
+ if(!state->validEntry)
+ {
+ r->_errno = ENOENT;
+ return -1;
+ }
+
+ if (filestat != NULL) {
+ _FAT_directory_entryStat (state->partition, &(state->currentEntry), filestat);
+ }
+
+ return 0;
+/*
+ // Get the filename
+ strncpy (filename, state->currentEntry.d_name, MAX_FILENAME_LENGTH);
+ // Get the stats, if requested
+ if (filestat != NULL) {
+ _FAT_directory_entryStat (state->partition, &(state->currentEntry), filestat);
+ }
+
+ // Look for the next entry for use next time
+ state->validEntry =
+ _FAT_directory_getNextEntry (state->partition, &(state->currentEntry));
+
+ return 0;
+*/
+}
+
+int _FAT_dirclose_r (struct _reent *r, DIR_STATE_STRUCT *dirState) {
+ DIR_STATE_STRUCT* state = dirState;
+
+ // We are no longer using this entry
+ state->inUse = false;
+
+ return 0;
+}
diff --git a/sdk-modifications/libsrc/fs/fatdir.h b/sdk-modifications/libsrc/fs/fatdir.h new file mode 100644 index 0000000..7c419ee --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatdir.h @@ -0,0 +1,85 @@ +/* + fatdir.h + + Functions used by the newlib disc stubs to interface with + this library + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-08-13 - Chishm + * Moved all externally visible directory related functions to fatdir + * Added _FAT_mkdir_r + + 2006-08-14 - Chishm + * Added directory iterator functions + + 2007-01-10 - Chishm + * Updated directory iterator functions for DevkitPro r20 +*/ + + +#ifndef _FATDIR_H +#define _FATDIR_H + +//#include <sys/reent.h> +#include <sys/stat.h> +//#include <sys/iosupport.h> +#include "fs_common.h" +#include "directory.h" + +typedef struct { + PARTITION* partition; + DIR_ENTRY currentEntry; + u32 startCluster; + u32 posEntry; + bool inUse; + bool validEntry; +} DIR_STATE_STRUCT; + +extern int _FAT_stat_r (struct _reent *r, const char *path, struct stat *st); + +extern int _FAT_link_r (struct _reent *r, const char *existing, const char *newLink); + +extern int _FAT_unlink_r (struct _reent *r, const char *name); + +extern int _FAT_chdir_r (struct _reent *r, const char *name); + +extern int _FAT_rename_r (struct _reent *r, const char *oldName, const char *newName); + +extern int _FAT_getshortname_r (struct _reent *r, const char *name, char *outName); + +extern int _FAT_hideAttrib_r (struct _reent *r, const char *name, u8 hide); + +extern int _FAT_mkdir_r (struct _reent *r, const char *path, int mode); + +/* +Directory iterator functions +*/ +extern DIR_STATE_STRUCT* _FAT_diropen_r(struct _reent *r, DIR_STATE_STRUCT *dirState, const char *path); +extern int _FAT_dirreset_r (struct _reent *r, DIR_STATE_STRUCT *dirState); +extern int _FAT_dirnext_r (struct _reent *r, DIR_STATE_STRUCT *dirState, struct stat *filestat); +extern int _FAT_dirclose_r (struct _reent *r, DIR_STATE_STRUCT *dirState); + + +#endif // _FATDIR_H diff --git a/sdk-modifications/libsrc/fs/fatdir_ex.c b/sdk-modifications/libsrc/fs/fatdir_ex.c new file mode 100644 index 0000000..b773255 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatdir_ex.c @@ -0,0 +1,183 @@ +#include <string.h> +
+#include <errno.h>
+ +#include <ctype.h>
+ +#include <unistd.h>
+ +#include <sys/dir.h> +
+ +#include "fatdir.h"
+ +#include "fatdir_ex.h"
+ + +#include "cache.h" +
+#include "file_allocation_table.h" +
+#include "partition.h"
+ +#include "directory.h"
+ +#include "bit_ops.h"
+ +#include "filetime.h"
+ +#include "unicode/unicode.h"
+
+int dirnextl (DIR_ITER *dirState, char *filename, char *longFilename, struct stat *filestat)
+{
+ DIR_STATE_STRUCT* state = (DIR_STATE_STRUCT*) (dirState->dirStruct); +
+
+ // Make sure we are still using this entry +
+ if (!state->inUse) { +
+ errno = EBADF;
+ return -1; +
+ } +
+
+ // Make sure there is another file to report on +
+ if (! state->validEntry) {
+ errno = ENOENT; +
+ return -1; +
+ } + +
+ // Get the filename +
+ strncpy (filename, state->currentEntry.d_name, MAX_FILENAME_LENGTH); +
+ // Get long filename
+ _FAT_unicode_unicode_to_local( state->currentEntry.unicodeFilename, (u8 *)longFilename );
+
+ + // Get the stats, if requested +
+ if (filestat != NULL) { +
+ _FAT_directory_entryStat (state->partition, &(state->currentEntry), filestat); +
+ } +
+
+ // Look for the next entry for use next time +
+ state->validEntry = +_FAT_directory_getNextEntry (state->partition, &(state->currentEntry)); + +
+ return 0;
+}
+
+int renamex( const char *oldName, const char *newName )
+{
+ PARTITION* partition = NULL;
+ DIR_ENTRY oldDirEntry;
+ DIR_ENTRY newDirEntry;
+ const char *pathEnd;
+ u32 dirCluster;
+
+ // Get the partition this directory is on
+ partition = _FAT_partition_getPartitionFromPath (oldName);
+
+ if (partition == NULL) {
+ errno = ENODEV;
+ return -1;
+ }
+
+ // Make sure the same partition is used for the old and new names
+ if (partition != _FAT_partition_getPartitionFromPath (newName)) {
+ errno = EXDEV;
+ return -1;
+ }
+
+ // Make sure we aren't trying to write to a read-only disc
+ if (partition->readOnly) {
+ errno = EROFS;
+ return -1;
+ }
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (oldName, ':') != NULL) {
+ oldName = strchr (oldName, ':') + 1;
+ }
+ if (strchr (oldName, ':') != NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+ if (strchr (newName, ':') != NULL) {
+ newName = strchr (newName, ':') + 1;
+ }
+ if (strchr (newName, ':') != NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ // Search for the file on the disc
+ if (!_FAT_directory_entryFromPath (partition, &oldDirEntry, oldName, NULL)) {
+ errno = ENOENT;
+ return -1;
+ }
+
+ // Make sure there is no existing file / directory with the new name
+ if (_FAT_directory_entryFromPath (partition, &newDirEntry, newName, NULL)) {
+ errno = EEXIST;
+ return -1;
+ }
+
+ // Create the new file entry
+ // Get the directory it has to go in
+ pathEnd = strrchr (newName, DIR_SEPARATOR);
+ if (pathEnd == NULL) {
+ // No path was specified
+ dirCluster = partition->cwdCluster;
+ pathEnd = newName;
+ } else {
+ // Path was specified -- get the right dirCluster
+ // Recycling newDirEntry, since it needs to be recreated anyway
+ if (!_FAT_directory_entryFromPath (partition, &newDirEntry, newName, pathEnd) ||
+ !_FAT_directory_isDirectory(&newDirEntry)) {
+ errno = ENOTDIR;
+ return -1;
+ }
+ dirCluster = _FAT_directory_entryGetCluster (newDirEntry.entryData);
+ // Move the pathEnd past the last DIR_SEPARATOR
+ pathEnd += 1;
+ }
+
+ // Copy the entry data
+ memcpy (&newDirEntry, &oldDirEntry, sizeof(DIR_ENTRY));
+
+ // Set the new name
+ strncpy (newDirEntry.d_name, pathEnd, MAX_FILENAME_LENGTH - 1);
+
+ // Write the new entry
+ if (!_FAT_directory_addEntry (partition, &newDirEntry, dirCluster)) {
+ errno = ENOSPC;
+ return -1;
+ }
+
+ // Remove the old entry
+ if (!_FAT_directory_removeEntry (partition, &oldDirEntry)) {
+ errno = EIO;
+ return -1;
+ }
+
+ // Flush any sectors in the disc cache
+ if (!_FAT_cache_flush (partition->cache)) {
+ errno = EIO;
+ return -1;
+ }
+
+ return 0;
+}
diff --git a/sdk-modifications/libsrc/fs/fatdir_ex.h b/sdk-modifications/libsrc/fs/fatdir_ex.h new file mode 100644 index 0000000..fbac46f --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatdir_ex.h @@ -0,0 +1,18 @@ +#ifndef _FATDIR_EX_H_
+#define _FATDIR_EX_H_
+ +#include "fatdir.h" +
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int dirnextl (DIR_ITER *dirState, char *filename, char *longFilename, struct stat *filestat);
+int renamex( const char *oldName, const char *newName );
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif//_FATDIR_EX_H_
diff --git a/sdk-modifications/libsrc/fs/fatfile.c b/sdk-modifications/libsrc/fs/fatfile.c new file mode 100644 index 0000000..304da34 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatfile.c @@ -0,0 +1,889 @@ +/*
+ fatfile.c
+
+ Functions used by the newlib disc stubs to interface with
+ this library
+
+ Copyright (c) 2006 Michael "Chishm" Chisholm
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation and/or
+ other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ 2006-07-11 - Chishm
+ * Original release
+
+ 2006-07-17 - Chishm
+ * Made all path inputs const char*
+ * Added _FAT_rename_r
+
+ 2006-08-02 - Chishm
+ * Fixed _FAT_seek_r
+
+ 2006-08-13 - Chishm
+ * Moved all externally visible directory related functions to fatdir
+*/
+//version 1.12
+
+#include "fatfile.h"
+
+#include <fcntl.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+#include <unistd.h>
+
+#include "fs_cache.h"
+#include "file_allocation_table.h"
+#include "bit_ops.h"
+#include "filetime.h"
+
+
+int _FAT_open_r (struct _reent *r, void *fileStruct, const char *path, int flags) {
+ PARTITION* partition = NULL;
+ bool fileExists;
+ DIR_ENTRY dirEntry;
+ const char* pathEnd;
+ u32 dirCluster;
+ FILE_STRUCT* file = (FILE_STRUCT*) fileStruct;
+
+
+
+ partition = _FAT_partition_getPartitionFromPath (path);
+
+ if (partition == NULL) {
+ r->_errno = ENODEV;
+ return -1;
+ }
+
+
+ // Move the path pointer to the start of the actual path
+ if (strchr (path, ':') != NULL) {
+ path = strchr (path, ':') + 1;
+ }
+ if (strchr (path, ':') != NULL) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Determine which mode the file is openned for
+ if ((flags & 0x03) == O_RDONLY) {
+ // Open the file for read-only access
+ file->read = true;
+ file->write = false;
+ file->append = false;
+ } else if ((flags & 0x03) == O_WRONLY) {
+ // Open file for write only access
+ file->read = false;
+ file->write = true;
+ file->append = false;
+ } else if ((flags & 0x03) == O_RDWR) {
+ // Open file for read/write access
+ file->read = true;
+ file->write = true;
+ file->append = false;
+ } else {
+ r->_errno = EACCES;
+ return -1;
+ }
+
+ // Make sure we aren't trying to write to a read-only disc
+ if (file->write && partition->readOnly) {
+ r->_errno = EROFS;
+ return -1;
+ }
+
+ // Search for the file on the disc
+ fileExists = _FAT_directory_entryFromPath (partition, &dirEntry, path, NULL);
+
+ // The file shouldn't exist if we are trying to create it
+ if ((flags & O_CREAT) && (flags & O_EXCL) && fileExists) {
+ r->_errno = EEXIST;
+ return -1;
+ }
+
+ // It should not be a directory if we're openning a file,
+ if (fileExists && _FAT_directory_isDirectory(&dirEntry)) {
+ r->_errno = EISDIR;
+ return -1;
+ }
+ // If the file doesn't exist, create it if we're allowed to
+ if (!fileExists) {
+ if (flags & O_CREAT) {
+ if (partition->readOnly) {
+ // We can't write to a read-only partition
+ r->_errno = EROFS;
+ return -1;
+ }
+ // Create the file
+ // Get the directory it has to go in
+ pathEnd = strrchr (path, DIR_SEPARATOR);
+ if (pathEnd == NULL) {
+ // No path was specified
+ dirCluster = partition->cwdCluster;
+ pathEnd = path;
+ } else {
+ // Path was specified -- get the right dirCluster
+ // Recycling dirEntry, since it needs to be recreated anyway
+ if (!_FAT_directory_entryFromPath (partition, &dirEntry, path, pathEnd) ||
+ !_FAT_directory_isDirectory(&dirEntry)) {
+ r->_errno = ENOTDIR;
+ return -1;
+ }
+ dirCluster = _FAT_directory_entryGetCluster (dirEntry.entryData);
+ // Move the pathEnd past the last DIR_SEPARATOR
+ pathEnd += 1;
+ }
+ // Create the entry data
+ strncpy (dirEntry.d_name, pathEnd, MAX_FILENAME_LENGTH - 1);
+ memset (dirEntry.entryData, 0, DIR_ENTRY_DATA_SIZE);
+
+ // Set the creation time and date
+ dirEntry.entryData[DIR_ENTRY_cTime_ms] = 0;
+ u16_to_u8array (dirEntry.entryData, DIR_ENTRY_cTime, _FAT_filetime_getTimeFromRTC());
+ u16_to_u8array (dirEntry.entryData, DIR_ENTRY_cDate, _FAT_filetime_getDateFromRTC());
+
+ if (!_FAT_directory_addEntry (partition, &dirEntry, dirCluster)) {
+ r->_errno = ENOSPC;
+ return -1;
+ }
+ } else {
+ // file doesn't exist, and we aren't creating it
+ r->_errno = ENOENT;
+ return -1;
+ }
+ }
+
+ file->filesize = u8array_to_u32 (dirEntry.entryData, DIR_ENTRY_fileSize);
+ /* Allow LARGEFILEs with undefined results
+ // Make sure that the file size can fit in the available space
+ if (!(flags & O_LARGEFILE) && (file->filesize >= (1<<31))) {
+ r->_errno = EFBIG;
+ return -1;
+ }
+ */
+
+ // Make sure we aren't trying to write to a read-only file
+ if (file->write && !_FAT_directory_isWritable(&dirEntry)) {
+ r->_errno = EROFS;
+ return -1;
+ }
+
+ // Associate this file with a particular partition
+ file->partition = partition;
+ file->startCluster = _FAT_directory_entryGetCluster (dirEntry.entryData);
+
+ // Truncate the file if requested
+ if ((flags & O_TRUNC) && file->write && (file->startCluster != 0)) {
+ _FAT_fat_clearLinks (partition, file->startCluster);
+ file->startCluster = 0;
+ file->filesize = 0;
+ }
+
+ // Get a new cluster for the file if required
+ if (file->startCluster == 0) {
+ file->startCluster = _FAT_fat_linkFreeCluster (partition, CLUSTER_FREE);
+ }
+
+ // Remember the position of this file's directory entry
+ file->dirEntryStart = dirEntry.dataStart; // Points to the start of the LFN entries of a file, or the alias for no LFN
+ file->dirEntryEnd = dirEntry.dataEnd;
+
+ file->currentPosition = 0;
+
+ file->rwPosition.cluster = file->startCluster;
+ file->rwPosition.sector = 0;
+ file->rwPosition.byte = 0;
+
+
+ if (flags & O_APPEND) {
+ file->append = true;
+ file->appendPosition.cluster = _FAT_fat_lastCluster (partition, file->startCluster);
+ file->appendPosition.sector = (file->filesize % partition->bytesPerCluster) / BYTES_PER_READ;
+ file->appendPosition.byte = file->filesize % BYTES_PER_READ;
+
+ // Check if the end of the file is on the end of a cluster
+ if ( (file->filesize > 0) && ((file->filesize % partition->bytesPerCluster)==0) ){
+ // Set flag to allocate a new cluster
+ file->appendPosition.sector = partition->sectorsPerCluster;
+ file->appendPosition.byte = 0;
+ }
+ } else{
+ file->append = false;
+ file->appendPosition = file->rwPosition;
+ }
+
+ file->inUse = true;
+
+ partition->openFileCount += 1;
+
+ return (int) file;
+}
+
+int _FAT_close_r (struct _reent *r, int fd) {
+ FILE_STRUCT* file = (FILE_STRUCT*) fd;
+ u8 dirEntryData[DIR_ENTRY_DATA_SIZE];
+
+ if (!file->inUse) {
+ r->_errno = EBADF;
+ return -1;
+ }
+ if (file->write) {
+ // Load the old entry
+ _FAT_cache_readPartialSector (file->partition->cache, dirEntryData,
+ _FAT_fat_clusterToSector(file->partition, file->dirEntryEnd.cluster) + file->dirEntryEnd.sector,
+ file->dirEntryEnd.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+
+ // Write new data to the directory entry
+ // File size
+ u32_to_u8array (dirEntryData, DIR_ENTRY_fileSize, file->filesize);
+
+ // Start cluster
+ u16_to_u8array (dirEntryData, DIR_ENTRY_cluster, file->startCluster);
+ u16_to_u8array (dirEntryData, DIR_ENTRY_clusterHigh, file->startCluster >> 16);
+
+ // Modification time and date
+ u16_to_u8array (dirEntryData, DIR_ENTRY_mTime, _FAT_filetime_getTimeFromRTC());
+ u16_to_u8array (dirEntryData, DIR_ENTRY_mDate, _FAT_filetime_getDateFromRTC());
+
+ // Access date
+ u16_to_u8array (dirEntryData, DIR_ENTRY_aDate, _FAT_filetime_getDateFromRTC());
+
+ // Write the new entry
+ _FAT_cache_writePartialSector (file->partition->cache, dirEntryData,
+ _FAT_fat_clusterToSector(file->partition, file->dirEntryEnd.cluster) + file->dirEntryEnd.sector,
+ file->dirEntryEnd.offset * DIR_ENTRY_DATA_SIZE, DIR_ENTRY_DATA_SIZE);
+
+ // Flush any sectors in the disc cache
+ if (!_FAT_cache_flush(file->partition->cache)) {
+ r->_errno = EIO;
+ return -1;
+ }
+ }
+
+ file->inUse = false;
+ file->partition->openFileCount -= 1;
+
+ return 0;
+}
+
+int _FAT_read_r (struct _reent *r, int fd, char *ptr, int len) {
+ FILE_STRUCT* file = (FILE_STRUCT*) fd;
+ PARTITION* partition;
+ CACHE* cache;
+
+ FILE_POSITION position;
+ u32 tempNextCluster;
+
+ int tempVar;
+
+ u32 remain;
+
+ bool flagNoError = true;
+
+ // Make sure we can actually read from the file
+ if ((file == NULL) || !file->inUse || !file->read) {
+ r->_errno = EBADF;
+ return 0;
+ }
+
+ // Don't try to read if the read pointer is past the end of file
+ if (file->currentPosition >= file->filesize) {
+ return 0;
+ }
+
+ // Don't read past end of file
+ if (len + file->currentPosition > file->filesize) {
+ r->_errno = EOVERFLOW;
+ len = file->filesize - file->currentPosition;
+ }
+
+ remain = len; //Assume len > 0
+
+ position = file->rwPosition;
+
+ partition = file->partition;
+ cache = file->partition->cache;
+
+ // Move onto next cluster if needed
+ if (position.sector >= partition->sectorsPerCluster) {
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if (tempNextCluster == CLUSTER_EOF) {
+ position.sector = partition->sectorsPerCluster;
+ } else if (tempNextCluster == CLUSTER_FREE) {
+ r->_errno = EIO;
+ return 0;
+ } else {
+ position.sector = 0;
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ // Align to sector
+ tempVar = BYTES_PER_READ - position.byte;
+ if (tempVar > remain) {
+ tempVar = remain;
+ }
+
+ if (tempVar < BYTES_PER_READ)
+ {
+ _FAT_cache_readPartialSector ( cache, ptr, _FAT_fat_clusterToSector (partition, position.cluster) + position.sector,
+ position.byte, tempVar);
+
+ remain -= tempVar;
+ ptr += tempVar;
+
+ position.byte += tempVar;
+ if (position.byte >= BYTES_PER_READ) {
+ position.byte = 0;
+ position.sector++;
+ }
+ }
+
+ // Align to cluster
+ //remaining more than 1 sector and read part of cluster
+ if((remain >= BYTES_PER_READ) && (position.sector < partition->sectorsPerCluster))
+ {
+ // tempVar is number of sectors to write
+ tempVar = remain / BYTES_PER_READ;
+ if(tempVar > (partition->sectorsPerCluster - position.sector))
+ tempVar = partition->sectorsPerCluster - position.sector;
+
+ // read several sectors from disk
+ _FAT_disc_readSectors (partition->disc, _FAT_fat_clusterToSector (partition, position.cluster) + position.sector,
+ tempVar, ptr);
+
+ ptr += tempVar * BYTES_PER_READ;
+ remain -= tempVar * BYTES_PER_READ;
+ position.sector += tempVar;
+ }
+
+ // Move onto next cluster
+ // It should get to here without reading anything if a cluster is due to be allocated
+ if ((remain>0) && (position.sector >= partition->sectorsPerCluster)) {
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if (tempNextCluster == CLUSTER_EOF) {
+ position.sector = partition->sectorsPerCluster;
+ } else if (tempNextCluster == CLUSTER_FREE) {
+ r->_errno = EIO;
+ flagNoError = false;
+ } else {
+ position.sector = 0;
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ // Read in whole clusters
+ while ((remain >= partition->bytesPerCluster) && flagNoError) {
+ _FAT_disc_readSectors (partition->disc, _FAT_fat_clusterToSector (partition, position.cluster), partition->sectorsPerCluster, ptr);
+ ptr += partition->bytesPerCluster;
+ remain -= partition->bytesPerCluster;
+
+ // Advance to next cluster
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if ((remain == 0) && (tempNextCluster == CLUSTER_EOF)) {
+ position.sector = partition->sectorsPerCluster;
+ } else if (tempNextCluster == CLUSTER_FREE) {
+ r->_errno = EIO;
+ flagNoError = false;
+ } else {
+ position.sector = 0;
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ // Read remaining sectors
+ tempVar = remain / BYTES_PER_READ; // Number of sectors left
+ if ((tempVar > 0) && flagNoError) {
+ _FAT_disc_readSectors (partition->disc, _FAT_fat_clusterToSector (partition, position.cluster),
+ tempVar, ptr);
+ ptr += tempVar * BYTES_PER_READ;
+ remain -= tempVar * BYTES_PER_READ;
+ position.sector += tempVar;
+ }
+
+ // Last remaining sector
+ // Check if anything is left
+ if ((remain > 0) && flagNoError) {
+ _FAT_cache_readPartialSector ( cache, ptr,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, 0, remain);
+ position.byte += remain;
+ remain = 0;
+ }
+
+ // Length read is the wanted length minus the stuff not read
+ len = len - remain;
+
+ // Update file information
+ file->rwPosition = position;
+ file->currentPosition += len;
+
+ return len;
+}
+
+/*
+Extend a file so that the size is the same as the rwPosition
+*/
+static bool file_extend_r (struct _reent *r, FILE_STRUCT* file) {
+ PARTITION* partition = file->partition;
+ CACHE* cache = file->partition->cache;
+
+ FILE_POSITION position;
+
+ u32 remain;
+
+ u8 zeroBuffer [BYTES_PER_READ] = {0};
+
+ u32 tempNextCluster;
+
+ position.byte = file->filesize % BYTES_PER_READ;
+
+ u32 partCluster = file->filesize % partition->bytesPerCluster;
+ if(0 == partCluster && 0 != file->filesize) //integer cluster
+ partCluster = partition->bytesPerCluster;
+ //position.sector = (file->filesize % partition->bytesPerCluster) / BYTES_PER_READ;
+ position.sector = partCluster / BYTES_PER_READ;
+
+ //This function index the last Cluster currently used, when file size equal Cluster size, will cause problem
+ position.cluster = _FAT_fat_lastCluster (partition, file->startCluster);
+
+ remain = file->currentPosition - file->filesize;
+
+ // Move onto next cluster if needed
+ if (position.sector >= partition->sectorsPerCluster) {
+ //Because _FAT_fat_lastCluster point to the last cluster currently used, so
+ //position.sector == partition->sectorsPerCluster means, the last cluster all used
+ //move to next cluster
+ position.sector = 0;
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if ((tempNextCluster == CLUSTER_EOF) || (tempNextCluster == CLUSTER_FREE)) {
+ // Ran out of clusters so get a new one
+ tempNextCluster = _FAT_fat_linkFreeCluster(partition, position.cluster);
+ }
+ if (tempNextCluster == CLUSTER_FREE) {
+ // Couldn't get a cluster, so abort
+ r->_errno = ENOSPC;
+ return false;
+ } else {
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ // Only need to clear to the end of the sector
+ if (remain + position.byte < BYTES_PER_READ) {
+ _FAT_cache_writePartialSector (cache, zeroBuffer,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, position.byte, remain);
+ position.byte += remain;
+ } else {
+ if (position.byte > 0) {
+ _FAT_cache_writePartialSector (cache, zeroBuffer,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, position.byte,
+ BYTES_PER_READ - position.byte);
+ remain -= (BYTES_PER_READ - position.byte);
+ position.byte = 0;
+ position.sector ++;
+ }
+
+ while (remain >= BYTES_PER_READ) {
+ if (position.sector >= partition->sectorsPerCluster) {
+ position.sector = 0;
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if ((tempNextCluster == CLUSTER_EOF) || (tempNextCluster == CLUSTER_FREE)) {
+ // Ran out of clusters so get a new one
+ tempNextCluster = _FAT_fat_linkFreeCluster(partition, position.cluster);
+ }
+ if (tempNextCluster == CLUSTER_FREE) {
+ // Couldn't get a cluster, so abort
+ r->_errno = ENOSPC;
+ return false;
+ } else {
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ _FAT_disc_writeSectors (partition->disc,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, 1, zeroBuffer);
+ //cancel the dirty state of cahced sctor, not necessary here, the sector haven't allocated yet
+ //_FAT_cache_writePartialSector_check(cache,
+ // _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, 1, zeroBuffer);
+
+ remain -= BYTES_PER_READ;
+ position.sector ++;
+ }
+
+ if (position.sector >= partition->sectorsPerCluster) {
+ position.sector = 0;
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if ((tempNextCluster == CLUSTER_EOF) || (tempNextCluster == CLUSTER_FREE)) {
+ // Ran out of clusters so get a new one
+ tempNextCluster = _FAT_fat_linkFreeCluster(partition, position.cluster);
+ }
+ if (tempNextCluster == CLUSTER_FREE) {
+ // Couldn't get a cluster, so abort
+ r->_errno = ENOSPC;
+ return false;
+ } else {
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ if (remain > 0) {
+ _FAT_cache_writePartialSector (cache, zeroBuffer,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, 0, remain);
+ position.byte = remain;
+ }
+ }
+
+ file->rwPosition = position;
+ file->filesize = file->currentPosition;
+ return true;
+}
+
+
+int _FAT_write_r (struct _reent *r,int fd, const char *ptr, int len) {
+ FILE_STRUCT* file = (FILE_STRUCT*) fd;
+
+ PARTITION* partition;
+ CACHE* cache;
+
+ FILE_POSITION position;
+ u32 tempNextCluster;
+
+ int tempVar;
+
+ u32 remain;
+
+ bool flagNoError = true;
+ bool flagAppending = false;
+
+ // Make sure we can actually write to the file
+ if ((file == NULL) || !file->inUse || !file->write) {
+ r->_errno = EBADF;
+ return -1;
+ }
+
+ partition = file->partition;
+ cache = file->partition->cache;
+ remain = len;
+
+ if (file->append) {
+ position = file->appendPosition;
+ flagAppending = true;
+ } else {
+ // If the write pointer is past the end of the file, extend the file to that size,
+ // the extended area set to zero
+ if (file->currentPosition > file->filesize) { //This may accure when fseek called before
+ if (!file_extend_r (r, file)) { //the function have done Cluster moving
+ return 0;
+ }
+ }
+
+ // Write at current read pointer
+ position = file->rwPosition;
+
+ // If it is writing past the current end of file, set appending flag
+ if (len + file->currentPosition > file->filesize) {
+ flagAppending = true;
+ }
+ }
+
+ // Move onto next cluster if needed
+ if (position.sector >= partition->sectorsPerCluster) {
+ position.sector = 0;
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if ((tempNextCluster == CLUSTER_EOF) || (tempNextCluster == CLUSTER_FREE)) {
+ // Ran out of clusters so get a new one
+ tempNextCluster = _FAT_fat_linkFreeCluster(partition, position.cluster);
+ }
+ if (tempNextCluster == CLUSTER_FREE) {
+ // Couldn't get a cluster, so abort
+ r->_errno = ENOSPC;
+ flagNoError = false;
+ } else {
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ // Align to sector
+ if(flagNoError && (position.byte > 0))
+ {
+ tempVar = BYTES_PER_READ - position.byte;
+ if (tempVar > remain) {
+ tempVar = remain;
+ }
+
+ // Write partial sector to disk
+ _FAT_cache_writePartialSector (cache, ptr,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, position.byte, tempVar);
+
+ remain -= tempVar;
+ ptr += tempVar;
+ position.byte += tempVar;
+
+ // Move onto next sector
+ if (position.byte >= BYTES_PER_READ) {
+ position.byte = 0;
+ position.sector ++; //here may be needed move to next cluster
+ }
+ }
+
+ // Align to cluster
+ //remaining more than 1 sector and used part of cluster
+ if(flagNoError && (remain >= BYTES_PER_READ) && (position.sector < partition->sectorsPerCluster))
+ {
+ // tempVar is number of sectors to write
+ tempVar = remain / BYTES_PER_READ;
+ if(tempVar > (partition->sectorsPerCluster - position.sector))
+ tempVar = partition->sectorsPerCluster - position.sector;
+
+ // write several sectors to disk
+ _FAT_disc_writeSectors (partition->disc,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, tempVar, ptr);
+ //cancel the dirty state of cached sctor
+ _FAT_cache_writePartialSector_check(cache,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, tempVar, ptr);
+
+ ptr += tempVar * BYTES_PER_READ;
+ remain -= tempVar * BYTES_PER_READ;
+ position.sector += tempVar;
+ }
+
+ // Move onto next cluster if needed
+ if (flagNoError && (position.sector >= partition->sectorsPerCluster) && (remain > 0)) {
+ position.sector = 0;
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if ((tempNextCluster == CLUSTER_EOF) || (tempNextCluster == CLUSTER_FREE)) {
+ // Ran out of clusters so get a new one
+ tempNextCluster = _FAT_fat_linkFreeCluster(partition, position.cluster);
+ }
+ if (tempNextCluster == CLUSTER_FREE) {
+ // Couldn't get a cluster, so abort
+ r->_errno = ENOSPC;
+ flagNoError = false;
+ } else {
+ position.cluster = tempNextCluster;
+ }
+ }
+
+ // Write whole clusters
+ while ((remain >= partition->bytesPerCluster) && flagNoError) {
+ _FAT_disc_writeSectors (partition->disc, _FAT_fat_clusterToSector(partition, position.cluster),
+ partition->sectorsPerCluster, ptr);
+ //cancel the dirty state of cahced sctor
+ _FAT_cache_writePartialSector_check(cache, _FAT_fat_clusterToSector(partition, position.cluster),
+ partition->sectorsPerCluster, ptr);
+
+ ptr += partition->bytesPerCluster;
+ remain -= partition->bytesPerCluster;
+ if (remain > 0) {
+ tempNextCluster = _FAT_fat_nextCluster(partition, position.cluster);
+ if ((tempNextCluster == CLUSTER_EOF) || (tempNextCluster == CLUSTER_FREE)) {
+ // Ran out of clusters so get a new one
+ tempNextCluster = _FAT_fat_linkFreeCluster(partition, position.cluster);
+ }
+ if (tempNextCluster == CLUSTER_FREE) {
+ // Couldn't get a cluster, so abort
+ r->_errno = ENOSPC;
+ flagNoError = false;
+ } else {
+ position.cluster = tempNextCluster;
+ }
+ } else {
+ // Allocate a new cluster when next writing the file
+ position.sector = partition->sectorsPerCluster;
+ }
+ }
+
+ // Write remaining sectors
+ // Number of sectors left
+ tempVar = remain / BYTES_PER_READ;
+ if ((tempVar > 0) && flagNoError) {
+ _FAT_disc_writeSectors (partition->disc, _FAT_fat_clusterToSector (partition, position.cluster),
+ tempVar, ptr);
+ //cancel the dirty state of cahced sctor
+ _FAT_cache_writePartialSector_check(cache, _FAT_fat_clusterToSector (partition, position.cluster),
+ tempVar, ptr);
+
+ ptr += tempVar * BYTES_PER_READ;
+ remain -= tempVar * BYTES_PER_READ;
+ position.sector += tempVar;
+ }
+
+ // Last remaining partial sector
+ if ((remain > 0) && flagNoError) {
+ if (flagAppending) {
+ //allocated new sector, erasing remaing unused part
+ //Actually, no necessary. when using fwrite to increase the file size, valid data area end at currentPosition
+ //when using fseek to increase file size, valid data area end at rwPosition, the increased zero area will valid
+ //at next fwrite, fread before this can not read out the increased zero area, the file size also not changed
+ //before next fwrite called
+ _FAT_cache_eraseWritePartialSector ( cache, ptr,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, 0, remain);
+ } else {
+ _FAT_cache_writePartialSector ( cache, ptr,
+ _FAT_fat_clusterToSector (partition, position.cluster) + position.sector, 0, remain);
+ }
+ position.byte += remain;
+ remain = 0;
+ }
+
+ // Amount read is the originally requested amount minus stuff remaining
+ len = len - remain;
+
+ // Update file information
+ if (file->append) {
+ // Appending doesn't affect the read pointer
+ file->appendPosition = position;
+ file->filesize += len;
+ } else {
+ // Writing also shifts the read pointer
+ file->rwPosition = position;
+ file->currentPosition += len;
+ if (file->filesize < file->currentPosition) {
+ file->filesize = file->currentPosition;
+ }
+ }
+
+ return len;
+}
+
+#include "ds2io.h"
+int _FAT_seek_r (struct _reent *r, int fd, int pos, int dir) {
+ FILE_STRUCT* file = (FILE_STRUCT*) fd;
+
+ PARTITION* partition;
+
+ u32 cluster, nextCluster;
+ int clusCount;
+ int position;
+
+ if ((file == NULL) || (file->inUse == false)) {
+ // invalid file
+ r->_errno = EBADF;
+ return -1;
+ }
+
+ partition = file->partition;
+
+ switch (dir) {
+ case SEEK_SET:
+ position = pos;
+ break;
+ case SEEK_CUR:
+ position = file->currentPosition + pos;
+ break;
+ case SEEK_END:
+ position = file->filesize + pos;
+ break;
+ default:
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ if ((pos > 0) && (position < 0)) {
+ r->_errno = EOVERFLOW;
+ return -1;
+ }
+
+ if (position < 0) {
+ r->_errno = EINVAL;
+ return -1;
+ }
+
+ // Only change the read/write position if it is within or at the bounds of the current filesize
+ if (file->filesize >= position) {
+
+ // Calculate where the correct cluster is
+ if (position >= file->currentPosition) {
+ clusCount = (position / partition->bytesPerCluster) - (file->currentPosition / partition->bytesPerCluster);
+ cluster = file->rwPosition.cluster;
+ //When last reading, it stop at the cluster boundary,
+ //file->rwPosition.sector == partition->bytesPerCluster, but
+ //file->rwPosition.cluster did not move to next cluster
+ if(file->rwPosition.sector >= partition->sectorsPerCluster)
+ clusCount += 1;
+ } else {
+ clusCount = position / partition->bytesPerCluster;
+ cluster = file->startCluster;
+ }
+
+ // Calculate the sector and byte of the current position, and store them
+ file->rwPosition.sector = (position % partition->bytesPerCluster) / BYTES_PER_READ;
+ file->rwPosition.byte = position % BYTES_PER_READ;
+
+ nextCluster = _FAT_fat_nextCluster (partition, cluster);
+ while ((clusCount > 0) && (nextCluster != CLUSTER_FREE) && (nextCluster != CLUSTER_EOF)) {
+ clusCount--;
+ cluster = nextCluster;
+ nextCluster = _FAT_fat_nextCluster (partition, cluster);
+ }
+
+ // Check if ran out of clusters, and the file is being written to
+ if ((clusCount > 0) && (file->write || file->append)) {
+ // Set flag to allocate a new cluster
+ file->rwPosition.sector = partition->sectorsPerCluster;
+ file->rwPosition.byte = 0;
+ }
+
+ file->rwPosition.cluster = cluster;
+ }
+
+ // Save position
+ file->currentPosition = position;
+
+ return position;
+}
+
+
+
+int _FAT_fstat_r (struct _reent *r, int fd, struct stat *st) {
+ FILE_STRUCT* file = (FILE_STRUCT*) fd;
+
+ PARTITION* partition;
+
+ DIR_ENTRY fileEntry;
+
+ if ((file == NULL) || (file->inUse == false)) {
+ // invalid file
+ r->_errno = EBADF;
+ return -1;
+ }
+
+ partition = file->partition;
+
+ // Get the file's entry data
+ fileEntry.dataStart = file->dirEntryStart;
+ fileEntry.dataEnd = file->dirEntryEnd;
+
+ if (!_FAT_directory_entryFromPosition (partition, &fileEntry)) {
+ r->_errno = EIO;
+ return -1;
+ }
+
+ // Fill in the stat struct
+ _FAT_directory_entryStat (partition, &fileEntry, st);
+
+ // Fix stats that have changed since the file was openned
+ st->st_ino = (ino_t)(file->startCluster); // The file serial number is the start cluster
+ st->st_size = file->filesize; // File size
+
+ return 0;
+}
+
diff --git a/sdk-modifications/libsrc/fs/fatfile.h b/sdk-modifications/libsrc/fs/fatfile.h new file mode 100644 index 0000000..4869562 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatfile.h @@ -0,0 +1,89 @@ +/* + fatfile.h + + Functions used by the newlib disc stubs to interface with + this library + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + + 2006-07-17 - Chishm + * Made all path inputs const char* + * Added _FAT_rename_r + + 2006-07-24 - Chishm + * Removed padding workaround from FILE_STRUCT + + 2006-08-13 - Chishm + * Moved all externally visible directory related functions to fatdir +*/ + + +#ifndef _FATFILE_H +#define _FATFILE_H + +//#include <sys/reent.h> +#include <sys/stat.h> + +#include "fs_common.h" +#include "partition.h" +#include "directory.h" + +typedef struct { + u32 cluster; + u32 sector; + s32 byte; +} FILE_POSITION; + +typedef struct { + int fd; + u32 filesize; + u32 startCluster; + u32 currentPosition; + FILE_POSITION rwPosition; + FILE_POSITION appendPosition; + bool read; + bool write; + bool append; + bool inUse; + PARTITION* partition; + DIR_ENTRY_POSITION dirEntryStart; // Points to the start of the LFN entries of a file, or the alias for no LFN + DIR_ENTRY_POSITION dirEntryEnd; // Always points to the file's alias entry +} FILE_STRUCT; + +extern int _FAT_open_r (struct _reent *r, void *fileStruct, const char *path, int flags); + +extern int _FAT_close_r (struct _reent *r, int fd); + +extern int _FAT_write_r (struct _reent *r,int fd, const char *ptr, int len); + +extern int _FAT_read_r (struct _reent *r, int fd, char *ptr, int len); + +extern int _FAT_seek_r (struct _reent *r, int fd,int pos, int dir); + +extern int _FAT_fstat_r (struct _reent *r, int fd, struct stat *st); + +#endif // _FATFILE_H diff --git a/sdk-modifications/libsrc/fs/fatfile_ex.c b/sdk-modifications/libsrc/fs/fatfile_ex.c new file mode 100644 index 0000000..aa23fb3 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatfile_ex.c @@ -0,0 +1,47 @@ +#include <fcntl.h> +#include <string.h> +#include <errno.h> +#include <ctype.h> +#include <unistd.h> +#include <stdio.h> +#include <iorpg.h> + +#include "cache.h" +#include "file_allocation_table.h" +#include "bit_ops.h" +#include "filetime.h" +#include "fatfile.h"
+ +// origin fread/fwrite do not take advantage of continuous read/write function of SD/NAND, +// it looks like the third parameter to _FAT_read_r()/_FAT_write_r() is a fixed '2' +// so they are much slower than these two.... + +// due to behavior of _FAT_read_r()/_FAT_write_r(), +// FAT should have a at least 8192 cluster size to get better performance, +// 16K or larger cluster size can get the best performance. + + + +int freadex( void * buffer, int _size, int _n, FILE * f ) +{ + if( 0 == _n ) + return 0; + dbg_printf("freadx %d\n", _n ); + struct _reent r; + int ret = _FAT_read_r( &r, (int)f->_file + 8, buffer, _size * _n ); + errno = r._errno; + return ret; +} + + +int fwriteex( const void * buffer, int _size, int _n, FILE * f ) +{ + if( 0 == _n ) + return 0; + dbg_printf("fwritex new %d\n", _n ); + struct _reent r; + int ret = _FAT_write_r( &r, (int)f->_file + 8, buffer, _size * _n ); + errno = r._errno; + return ret; +} + diff --git a/sdk-modifications/libsrc/fs/fatfile_ex.h b/sdk-modifications/libsrc/fs/fatfile_ex.h new file mode 100644 index 0000000..c434b63 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fatfile_ex.h @@ -0,0 +1,19 @@ +#ifndef _FATFILE_EX_H_
+#define _FATFILE_EX_H_
+ +#include <stdio.h> +#include "fatfile.h" +
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int freadex( void * buffer, int _size, int _n, FILE * f );
+int fwritex( const void * buffer, int _size, int _n, FILE * f ); +
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif//_FATFILE_EX_H_
diff --git a/sdk-modifications/libsrc/fs/file_allocation_table.c b/sdk-modifications/libsrc/fs/file_allocation_table.c new file mode 100644 index 0000000..f382b52 --- /dev/null +++ b/sdk-modifications/libsrc/fs/file_allocation_table.c @@ -0,0 +1,330 @@ +/* + file_allocation_table.c + Reading, writing and manipulation of the FAT structure on + a FAT partition + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + + 2006-07-11 - Chishm + * Made several fixes related to free clusters, thanks to Loopy + + 2006-10-01 - Chishm + * Added _FAT_fat_linkFreeClusterCleared to clear a cluster when it is allocated +*/ + + +#include "file_allocation_table.h" +#include "partition.h" +#include <string.h> + +/* +Gets the cluster linked from input cluster +*/ +u32 _FAT_fat_nextCluster(PARTITION* partition, u32 cluster) +{ + u32 nextCluster = CLUSTER_FREE; + u32 sector; + int offset; + + switch (partition->filesysType) + { + case FS_UNKNOWN: + nextCluster = CLUSTER_FREE; + break; + + case FS_FAT12: + sector = partition->fat.fatStart + (((cluster * 3) / 2) / BYTES_PER_READ); + offset = ((cluster * 3) / 2) % BYTES_PER_READ; + + + _FAT_cache_readPartialSector (partition->cache, &nextCluster, sector, offset, sizeof(u8)); + + offset++; + + if (offset >= BYTES_PER_READ) { + offset = 0; + sector++; + } + + _FAT_cache_readPartialSector (partition->cache, ((u8*)&nextCluster) + sizeof(u8), sector, offset, sizeof(u8)); + + if (cluster & 0x01) { + nextCluster = nextCluster >> 4; + } else { + nextCluster &= 0x0FFF; + } + + if (nextCluster >= 0x0FF7) + { + nextCluster = CLUSTER_EOF; + } + + break; + + case FS_FAT16: + sector = partition->fat.fatStart + ((cluster << 1) / BYTES_PER_READ); + offset = (cluster % (BYTES_PER_READ >> 1)) << 1; + + _FAT_cache_readPartialSector (partition->cache, &nextCluster, sector, offset, sizeof(u16)); + + if (nextCluster >= 0xFFF7) + { + nextCluster = CLUSTER_EOF; + } + break; + + case FS_FAT32: + sector = partition->fat.fatStart + ((cluster << 2) / BYTES_PER_READ); + offset = (cluster % (BYTES_PER_READ >> 2)) << 2; + + _FAT_cache_readPartialSector (partition->cache, &nextCluster, sector, offset, sizeof(u32)); + + if (nextCluster >= 0x0FFFFFF7) + { + nextCluster = CLUSTER_EOF; + } + break; + + default: + nextCluster = CLUSTER_FREE; + break; + } + + return nextCluster; +} + +/* +writes value into the correct offset within a partition's FAT, based +on the cluster number. +*/ +static bool _FAT_fat_writeFatEntry (PARTITION* partition, u32 cluster, u32 value) { + u32 sector; + int offset; + u8 oldValue; + + if ((cluster < 0x0002) || (cluster > partition->fat.lastCluster)) + { + return false; + } + + switch (partition->filesysType) + { + case FS_UNKNOWN: + return false; + break; + + case FS_FAT12: + sector = partition->fat.fatStart + (((cluster * 3) / 2) / BYTES_PER_READ); + offset = ((cluster * 3) / 2) % BYTES_PER_READ; + + if (cluster & 0x01) { + + _FAT_cache_readPartialSector (partition->cache, &oldValue, sector, offset, sizeof(u8)); + + value = (value << 4) | (oldValue & 0x0F); + + _FAT_cache_writePartialSector (partition->cache, &value, sector, offset, sizeof(u8)); + + offset++; + if (offset >= BYTES_PER_READ) { + offset = 0; + sector++; + } + + _FAT_cache_writePartialSector (partition->cache, ((u8*)&value) + sizeof(u8), sector, offset, sizeof(u8)); + + } else { + + _FAT_cache_writePartialSector (partition->cache, &value, sector, offset, sizeof(u8)); + + offset++; + if (offset >= BYTES_PER_READ) { + offset = 0; + sector++; + } + + _FAT_cache_readPartialSector (partition->cache, &oldValue, sector, offset, sizeof(u8)); + + value = ((value >> 8) & 0x0F) | (oldValue & 0xF0); + + _FAT_cache_writePartialSector (partition->cache, &value, sector, offset, sizeof(u8)); + } + + break; + + case FS_FAT16: + sector = partition->fat.fatStart + ((cluster << 1) / BYTES_PER_READ); + offset = (cluster % (BYTES_PER_READ >> 1)) << 1; + + _FAT_cache_writePartialSector (partition->cache, &value, sector, offset, sizeof(u16)); + + break; + + case FS_FAT32: + sector = partition->fat.fatStart + ((cluster << 2) / BYTES_PER_READ); + offset = (cluster % (BYTES_PER_READ >> 2)) << 2; + + _FAT_cache_writePartialSector (partition->cache, &value, sector, offset, sizeof(u32)); + + break; + + default: + return false; + break; + } + + return true; +} + +/*----------------------------------------------------------------- +gets the first available free cluster, sets it +to end of file, links the input cluster to it then returns the +cluster number +If an error occurs, return CLUSTER_FREE +-----------------------------------------------------------------*/ +u32 _FAT_fat_linkFreeCluster(PARTITION* partition, u32 cluster) { + u32 firstFree; + u32 curLink; + u32 lastCluster; + bool loopedAroundFAT = false; + + lastCluster = partition->fat.lastCluster; + + if (cluster > lastCluster) { + return CLUSTER_FREE; + } + + // Check if the cluster already has a link, and return it if so + curLink = _FAT_fat_nextCluster(partition, cluster); + if ((curLink >= CLUSTER_FIRST) && (curLink <= lastCluster)) { + return curLink; // Return the current link - don't allocate a new one + } + + // Get a free cluster + firstFree = partition->fat.firstFree; + // Start at first valid cluster + if (firstFree < CLUSTER_FIRST) { + firstFree = CLUSTER_FIRST; + } + + // Search until a free cluster is found + while (_FAT_fat_nextCluster(partition, firstFree) != CLUSTER_FREE) { + firstFree++; + if (firstFree > lastCluster) { + if (loopedAroundFAT) { + // If couldn't get a free cluster then return, saying this fact + partition->fat.firstFree = firstFree; + return CLUSTER_FREE; + } else { + // Try looping back to the beginning of the FAT + // This was suggested by loopy + firstFree = CLUSTER_FIRST; + loopedAroundFAT = true; + } + } + } + partition->fat.firstFree = firstFree; + + if ((cluster >= CLUSTER_FIRST) && (cluster < lastCluster)) + { + // Update the linked from FAT entry + _FAT_fat_writeFatEntry (partition, cluster, firstFree); + } + // Create the linked to FAT entry + _FAT_fat_writeFatEntry (partition, firstFree, CLUSTER_EOF); + + return firstFree; +} + +/*----------------------------------------------------------------- +gets the first available free cluster, sets it +to end of file, links the input cluster to it, clears the new +cluster to 0 valued bytes, then returns the cluster number +If an error occurs, return CLUSTER_FREE +-----------------------------------------------------------------*/ +u32 _FAT_fat_linkFreeClusterCleared (PARTITION* partition, u32 cluster) { + u32 newCluster; + int i; + u8 emptySector[BYTES_PER_READ]; + + // Link the cluster + newCluster = _FAT_fat_linkFreeCluster(partition, cluster); + if (newCluster == CLUSTER_FREE) { + return CLUSTER_FREE; + } + + // Clear all the sectors within the cluster + memset (emptySector, 0, BYTES_PER_READ); + for (i = 0; i < partition->sectorsPerCluster; i++) { + _FAT_disc_writeSectors (partition->disc, + _FAT_fat_clusterToSector (partition, newCluster) + i, + 1, emptySector); + } + + return newCluster; +} + + +/*----------------------------------------------------------------- +_FAT_fat_clearLinks +frees any cluster used by a file +-----------------------------------------------------------------*/ +bool _FAT_fat_clearLinks (PARTITION* partition, u32 cluster) { + u32 nextCluster; + + if ((cluster < 0x0002) || (cluster > partition->fat.lastCluster)) + return false; + + // If this clears up more space in the FAT before the current free pointer, move it backwards + if (cluster < partition->fat.firstFree) { + partition->fat.firstFree = cluster; + } + + while ((cluster != CLUSTER_EOF) && (cluster != CLUSTER_FREE)) { + // Store next cluster before erasing the link + nextCluster = _FAT_fat_nextCluster (partition, cluster); + + // Erase the link + _FAT_fat_writeFatEntry (partition, cluster, CLUSTER_FREE); + + // Move onto next cluster + cluster = nextCluster; + } + + return true; +} + +/*----------------------------------------------------------------- +_FAT_fat_lastCluster +Trace the cluster links until the last one is found +-----------------------------------------------------------------*/ +u32 _FAT_fat_lastCluster (PARTITION* partition, u32 cluster) { + while ((_FAT_fat_nextCluster(partition, cluster) != CLUSTER_FREE) && (_FAT_fat_nextCluster(partition, cluster) != CLUSTER_EOF)) { + cluster = _FAT_fat_nextCluster(partition, cluster); + } + return cluster; +} diff --git a/sdk-modifications/libsrc/fs/file_allocation_table.h b/sdk-modifications/libsrc/fs/file_allocation_table.h new file mode 100644 index 0000000..4fb4149 --- /dev/null +++ b/sdk-modifications/libsrc/fs/file_allocation_table.h @@ -0,0 +1,64 @@ +/* + file_allocation_table.h + Reading, writing and manipulation of the FAT structure on + a FAT partition + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + + 2006-10-01 - Chishm + * Added _FAT_fat_linkFreeClusterCleared to clear a cluster when it is allocated +*/ + +#ifndef _FAT_H +#define _FAT_H + +#include "fs_common.h" +#include "partition.h" + +#define CLUSTER_EOF_16 0xFFFF +#define CLUSTER_EOF 0x0FFFFFFF +#define CLUSTER_FREE 0x0000 +#define CLUSTER_FIRST 0x0002 + +#define CLUSTERS_PER_FAT12 4085 +#define CLUSTERS_PER_FAT16 65525 + + +u32 _FAT_fat_nextCluster(PARTITION* partition, u32 cluster); + +u32 _FAT_fat_linkFreeCluster(PARTITION* partition, u32 cluster); +u32 _FAT_fat_linkFreeClusterCleared (PARTITION* partition, u32 cluster); + +bool _FAT_fat_clearLinks (PARTITION* partition, u32 cluster); + +u32 _FAT_fat_lastCluster (PARTITION* partition, u32 cluster); + +static inline u32 _FAT_fat_clusterToSector (PARTITION* partition, u32 cluster) { + return (cluster >= 2) ? ((cluster - 2) * partition->sectorsPerCluster) + partition->dataStart : partition->rootDirStart; +} + +#endif // _FAT_H diff --git a/sdk-modifications/libsrc/fs/filetime.c b/sdk-modifications/libsrc/fs/filetime.c new file mode 100644 index 0000000..f2de6ef --- /dev/null +++ b/sdk-modifications/libsrc/fs/filetime.c @@ -0,0 +1,146 @@ +/* + filetime.c + Conversion of file time and date values to various other types + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + + 2006-09-30 - Chishm + * Validity checks performed on the time supplied by the IPC + * Cleaned up magic numbers + + 2006-10-01 - Chishm + * Fixed incorrect use of bitwise-or instead of logical-or +*/ + + +#include "filetime.h" + +#ifdef NDS +//#include <nds/ipc.h> +#include "ds2io.h" +#endif + +#define HOUR_PM_INDICATOR 40 + +#define MAX_HOUR 23 +#define MAX_MINUTE 59 +#define MAX_SECOND 59 + +#define MAX_YEAR 99 +#define MIN_YEAR 6 // The date is invalid if it's before this year +#define MAX_MONTH 12 +#define MIN_MONTH 1 +#define MAX_DAY 31 +#define MIN_DAY 1 + +// Second values are averages, so time value won't be 100% accurate, +// but should be within the correct month. +#define SECONDS_PER_MINUTE 60 +#define SECONDS_PER_HOUR 3600 +#define SECONDS_PER_DAY 86400 +#define SECONDS_PER_MONTH 2629743 +#define SECONDS_PER_YEAR 31556926 + +u16 _FAT_filetime_getTimeFromRTC (void) { +#ifdef NDS + int hour, minute, second; + struct rtc time; + + ds2_getTime(&time); + + hour = (time.hours >= HOUR_PM_INDICATOR ? time.hours - HOUR_PM_INDICATOR : time.hours); + minute = time.minutes; + second = time.seconds; + + // Check that the values are all in range. + // If they are not, return 0 (no timestamp) + if ((hour < 0) || (hour > MAX_HOUR)) return 0; + if ((minute < 0) || (minute > MAX_MINUTE)) return 0; + if ((second < 0) || (second > MAX_SECOND)) return 0; + + return ( + ((hour & 0x1F) << 11) | + ((minute & 0x3F) << 5) | + ((second >> 1) & 0x1F) + ); +#else + return 0; +#endif +} + + +u16 _FAT_filetime_getDateFromRTC (void) { +#ifdef NDS + int year, month, day; + struct rtc time; + + ds2_getTime(&time); + + year = time.year; + month = time.month; + day = time.day; + + if ((year < MIN_YEAR) || (year > MAX_YEAR)) return 0; + if ((month < MIN_MONTH) || (month > MAX_MONTH)) return 0; + if ((day < MIN_DAY) || (day > MAX_DAY)) return 0; + + return ( + (((year + 20) & 0x7F) <<9) | // Adjust for MS-FAT base year (1980 vs 2000 for DS clock) + ((month & 0xF) << 5) | + (day & 0x1F) + ); +#else + return 0; +#endif +} + +time_t _FAT_filetime_to_time_t (u16 time, u16 date) { + int hour, minute, second; + int day, month, year; + + time_t result; + + hour = time >> 11; + minute = (time >> 5) & 0x3F; + second = (time & 0x1F) << 1; + + day = date & 0x1F; + month = (date >> 5) & 0x0F; + year = date >> 9; + + // Second values are averages, so time value won't be 100% accurate, + // but should be within the correct month. + result = second + + minute * SECONDS_PER_MINUTE + + hour * SECONDS_PER_HOUR + + day * SECONDS_PER_DAY + + month * SECONDS_PER_MONTH + + year * SECONDS_PER_YEAR + ; + + return result; +} diff --git a/sdk-modifications/libsrc/fs/filetime.h b/sdk-modifications/libsrc/fs/filetime.h new file mode 100644 index 0000000..fa651a7 --- /dev/null +++ b/sdk-modifications/libsrc/fs/filetime.h @@ -0,0 +1,44 @@ +/* + filetime.h + Conversion of file time and date values to various other types + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _FILETIME_H +#define _FILETIME_H + +#include "fs_common.h" +#include <sys/types.h> + +u16 _FAT_filetime_getTimeFromRTC (void); +u16 _FAT_filetime_getDateFromRTC (void); + +time_t _FAT_filetime_to_time_t (u16 time, u16 date); + + +#endif // _FILETIME_H diff --git a/sdk-modifications/libsrc/fs/fs.mk b/sdk-modifications/libsrc/fs/fs.mk new file mode 100644 index 0000000..9b17c48 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fs.mk @@ -0,0 +1,24 @@ +#fs.mk + +SRC += $(FS_DIR)/cache.c \ + $(FS_DIR)/directory.c \ + $(FS_DIR)/fatdir.c \ + $(FS_DIR)/fatfile.c \ + $(FS_DIR)/file_allocation_table.c \ + $(FS_DIR)/filetime.c \ + $(FS_DIR)/fs_api.c \ + $(FS_DIR)/fs_unicode.c \ + $(FS_DIR)/libfat.c \ + $(FS_DIR)/partition.c \ + $(FS_DIR)/fat_misc.c \ + $(FS_DIR)/disc_io/disc.c \ + $(FS_DIR)/disc_io/io_ds2_mmcf.c \ + $(FS_DIR)/ds2_fcntl.c \ + $(FS_DIR)/ds2_unistd.c \ + +SSRC += + +INC += -I$(FS_DIR) -I$(FS_DIR)/disc_io + +CFLAGS += -DNDS + diff --git a/sdk-modifications/libsrc/fs/fs_api.c b/sdk-modifications/libsrc/fs/fs_api.c new file mode 100644 index 0000000..b23a450 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fs_api.c @@ -0,0 +1,452 @@ +//fs_api.c
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/stat.h>
+#include "fs_common.h"
+#include "fatfile.h"
+#include "fatdir.h"
+
+typedef unsigned int size_t;
+typedef unsigned int mode_t;
+
+typedef struct {
+ const char* mode; /* mode string */
+ unsigned int flag; /* mode flag */
+// unsigned char mode_r; /* READ */
+// unsigned char mode_w; /* WRITE */
+// unsigned char mode_a; /* APPEND */
+// unsigned char mode_c; /* CREATE */
+} _fat_mode_type;
+
+static const _fat_mode_type _fat_valid_mode[] = {
+ { "r" , O_RDONLY },
+ { "w" , O_WRONLY | O_TRUNC | O_CREAT },
+ { "a" , O_WRONLY | O_APPEND | O_CREAT },
+ { "rb" , O_RDONLY },
+ { "wb" , O_WRONLY | O_TRUNC | O_CREAT },
+ { "ab" , O_WRONLY | O_APPEND | O_CREAT },
+ { "r+" , O_RDWR },
+ { "w+" , O_RDWR | O_TRUNC | O_CREAT },
+ { "a+" , O_RDWR | O_APPEND | O_CREAT },
+ { "r+b" , O_RDWR },
+ { "rb+" , O_RDWR },
+ { "w+b" , O_RDWR | O_TRUNC | O_CREAT },
+ { "wb+" , O_RDWR | O_TRUNC | O_CREAT },
+ { "a+b" , O_RDWR | O_APPEND | O_CREAT },
+ { "ab+" , O_RDWR | O_APPEND | O_CREAT }
+};
+
+#define MAX_OPEN_FILE 16
+#define MAX_OPEN_DIR 32
+#define MAX_PWD_LEN 512
+#define MAX_STDIO_BUF_SIZE 2048
+
+#define FAT_VALID_MODE_NUM (sizeof(_fat_valid_mode)/sizeof(_fat_mode_type))
+
+static FILE_STRUCT __FILEs[MAX_OPEN_FILE];
+struct _reent __REENT;
+static DIR_STATE_STRUCT __DIRs[MAX_OPEN_DIR];
+static char __PWD[MAX_PWD_LEN];
+
+int fat_init(void)
+{
+ int i, flag;
+
+ for(i= 0; i < MAX_OPEN_FILE; i++)
+ __FILEs[i].inUse = false;
+
+ for(i= 0; i < MAX_OPEN_DIR; i++)
+ __DIRs[i].inUse = false;
+
+ flag = -1;
+ if(_FAT_Init() == true) //success
+ flag = 0;
+
+ return flag;
+}
+
+FILE_STRUCT* fat_fopen(const char *file, const char *mode)
+{
+ int i, k;
+ int fd;
+ FILE_STRUCT* fp;
+
+ for(i= 0; i < MAX_OPEN_FILE; i++)
+ if(false == __FILEs[i].inUse) break;
+
+ if(i >= MAX_OPEN_FILE)
+ {
+ __REENT._errno = EMFILE; /* Too many open files */
+ return NULL;
+ }
+
+ for(k = 0; k < FAT_VALID_MODE_NUM; k++)
+ if(!strcasecmp(_fat_valid_mode[k].mode, mode)) break;
+
+ if(k >= FAT_VALID_MODE_NUM)
+ {
+ __REENT._errno = EINVAL;
+ return NULL;
+ }
+
+ fd = _FAT_open_r(&__REENT, (void*)&__FILEs[i], file, _fat_valid_mode[k].flag);
+ if(-1 == fd) return NULL;
+
+ fp = &__FILEs[i];
+ fp -> fd = fd;
+
+ return fp;
+}
+
+size_t fat_fread(void *buf, size_t size, size_t count, FILE_STRUCT *fp)
+{
+ if(0 == size || 0 == count)
+ return 0;
+
+ int len = _FAT_read_r(&__REENT, fp->fd, (char*)buf, size*count);
+ len /= size;
+ return len;
+}
+
+size_t fat_fwrite(const void *buf, size_t size, size_t count, FILE_STRUCT *fp)
+{
+ if(0 == size || 0 == count)
+ return 0;
+
+ int len = _FAT_write_r(&__REENT, fp->fd, (const char*)buf, size*count);
+ len /= size;
+
+ return len;
+}
+
+int fat_fclose(FILE_STRUCT *fp)
+{
+ return( _FAT_close_r(&__REENT, fp->fd) );
+}
+
+int fat_fseek(FILE_STRUCT *fp, long offset, int whence)
+{
+ int flag;
+
+ //When success, _FAT_seek_r return file position pointer
+ flag = _FAT_seek_r (&__REENT, fp->fd, (int)offset, whence);
+ if(flag > 0) flag = 0;
+
+ return flag;
+}
+
+long fat_ftell(FILE_STRUCT *fp)
+{
+ return( (long)fp->currentPosition );
+}
+
+int fat_feof(FILE_STRUCT *fp)
+{
+ int result;
+
+ result = 0;
+ if((fp->currentPosition +1) >= (fp->filesize))
+ result = -1;
+
+ return result;
+}
+
+int fat_ferror(FILE_STRUCT *fp)
+{
+ return( __REENT._errno );
+}
+
+void fat_clearerr(FILE_STRUCT *fp)
+{
+ fp = fp;
+
+ __REENT._errno = 0;
+}
+
+int fat_fflush(FILE_STRUCT *fp)
+{
+ return(_FAT_cache_flush(fp->partition->cache));
+}
+
+int fat_fgetc(FILE_STRUCT *fp)
+{
+ char ch;
+ int result;
+
+ result = _FAT_read_r(&__REENT, fp->fd, &ch, 1);
+ if(0 == result)
+ return EOF;
+
+ return ( (int)ch );
+}
+
+char* fat_fgets(char* buf, int n, FILE_STRUCT* fp)
+{
+ int m;
+ char *s;
+
+ buf[0] = '\0';
+ if(n <= 1) return buf;
+
+ n -= 1;
+ m = _FAT_read_r(&__REENT, fp->fd, buf, n);
+ if(0 == m) return NULL;
+
+ buf[m] = '\0';
+ s = strchr((const char*)buf, 0x0A);
+
+ if(NULL != s)
+ {
+ *(++s)= '\0';
+ m -= s - buf;
+
+ //fix reading pointer
+ _FAT_seek_r (&__REENT, fp->fd, -m, SEEK_CUR);
+ }
+ else if(m == n)
+ {
+ if(0x0D == buf[n-1]) //0x0D,0x0A
+ {
+ buf[n-1] = '\0';
+ _FAT_seek_r (&__REENT, fp->fd, -1, SEEK_CUR);
+ }
+ }
+
+ return buf;
+}
+
+int fat_fputc(int ch, FILE_STRUCT *fp)
+{
+ return( _FAT_write_r(&__REENT, fp->fd, (const char*)&ch, 1) );
+}
+
+int fat_fputs(const char *s, FILE_STRUCT *fp)
+{
+ unsigned int len;
+
+ len = strlen(s);
+ return( _FAT_write_r(&__REENT, fp->fd, s, len) );
+}
+
+int fat_remove(const char *filename)
+{
+ return( _FAT_unlink_r (&__REENT, (const char*)filename) );
+}
+
+int fat_rename(const char *oldName, const char *newName)
+{
+ return( _FAT_rename_r(&__REENT, oldName, newName) );
+}
+
+int fat_setHidden(const char *name, unsigned char hide){
+ return(_FAT_hideAttrib_r (&__REENT, name, hide));
+}
+
+#define S_ISHID(st_mode) ((st_mode & S_IHIDDEN) != 0)
+int fat_isHidden(struct stat *st){
+ return S_ISHID(st->st_mode);
+}
+
+int fat_getShortName(const char *fullName, char *outName){
+ return(_FAT_getshortname_r (&__REENT, fullName, outName));
+}
+
+
+void fat_rewind(FILE_STRUCT *fp)
+{
+ _FAT_seek_r (&__REENT, fp->fd, 0, SEEK_SET);
+}
+
+int fat_fstat(int fildes, struct stat *buf)
+{
+ return( _FAT_fstat_r (&__REENT, fildes, buf) );
+}
+
+//int fat_fprintf(FILE_STRUCT *fp, const char *format, ...)
+int fat_fprintf(void* fp, const char *format, ...)
+{
+ int ret;
+ va_list ap;
+ char buf[MAX_STDIO_BUF_SIZE];
+
+ if(NULL == fp)
+ {
+ __REENT._errno = EINVAL;
+ return -1;
+ }
+
+ //FIXME: stderr, stdout
+ if((void*)stderr == fp) return 0;
+ if((void*)stdout == fp) return 0;
+
+ memset(buf, 0, MAX_STDIO_BUF_SIZE);
+
+ va_start (ap, format);
+ ret = vsnprintf (buf, MAX_STDIO_BUF_SIZE, format, ap);
+ va_end (ap);
+
+ //if output string too long, it will not put out to file
+ if(ret >= MAX_STDIO_BUF_SIZE)
+ return -1;
+
+ return( _FAT_write_r(&__REENT, ((FILE_STRUCT*)fp)->fd, (const char*)buf, strlen(buf)) );
+}
+
+int fat_fscanf(FILE_STRUCT *fp, const char *format, ...)
+{
+ int ret;
+ va_list ap;
+ char buf[MAX_STDIO_BUF_SIZE];
+ char *pt;
+
+ if(NULL == fp)
+ {
+ __REENT._errno = EINVAL;
+ return -1;
+ }
+
+ pt = fat_fgets(buf, MAX_STDIO_BUF_SIZE, fp);
+ if(NULL == pt)
+ return -1;
+
+ va_start (ap, format);
+ ret = vsscanf (buf, format, ap);
+
+ return ret;
+}
+
+DIR_STATE_STRUCT* fat_opendir(const char *name)
+{
+ int i;
+
+ for(i = 0; i < MAX_OPEN_DIR; i++)
+ {
+ if(false == __DIRs[i].inUse) break;
+ }
+
+ if(i>= MAX_OPEN_DIR)
+ {
+ __REENT._errno = EMFILE; /* Too many open files */
+ return NULL;
+ }
+
+ return( _FAT_diropen_r(&__REENT, &__DIRs[i], name) );
+}
+
+DIR_ENTRY* fat_readdir(DIR_STATE_STRUCT *dirp)
+{
+ int isValid;
+
+ isValid = _FAT_dirnext_r (&__REENT, dirp, NULL);
+ if(0 != isValid)
+ return NULL;
+
+ return( &(dirp->currentEntry) );
+}
+
+long int fat_telldir(DIR_STATE_STRUCT *dirp)
+{
+ return( dirp->posEntry );
+}
+
+void fat_seekdir(DIR_STATE_STRUCT *dirp, long int loc)
+{
+ if (!dirp->inUse) {
+ __REENT._errno = EBADF;
+ return;
+ }
+
+ if(0 == loc)
+ {
+ dirp->posEntry = 0;
+ }
+ else if(loc > 0)
+ {
+ while(dirp->posEntry < loc)
+ {
+ dirp->validEntry = _FAT_directory_getNextEntry (dirp->partition, &(dirp->currentEntry));
+ dirp->posEntry += 1;
+
+ if(!dirp->validEntry) break;
+ }
+ }
+
+ return;
+}
+
+int fat_closedir(DIR_STATE_STRUCT *dirp)
+{
+ return(_FAT_dirclose_r (&__REENT, dirp));
+}
+
+int fat_chdir(const char *path)
+{
+ int ret;
+ char *pt;
+
+ ret = _FAT_chdir_r (&__REENT, path);
+ if(0 != ret) return -1;
+
+ pt = strchr(path, ':');
+ if(pt == NULL)
+ strcat(__PWD, path);
+ else
+ strcpy(__PWD, path);
+
+ pt = strchr(__PWD, '\0');
+ while(pt-- != __PWD)
+ {
+ if(pt[0] != DIR_SEPARATOR) break;
+ }
+
+ pt[1] = DIR_SEPARATOR;
+ pt[2] = '\0';
+
+ return 0;
+}
+
+char* fat_getcwd(char *buf, size_t size)
+{
+ int len;
+
+ len = strlen(__PWD);
+ if(len >= size)
+ {
+ __REENT._errno = ERANGE;
+ return NULL;
+ }
+
+ strcpy(buf, __PWD);
+ return buf;
+}
+
+int fat_mkdir(const char *path, mode_t mode)
+{
+ return( _FAT_mkdir_r(&__REENT, path, mode) );
+}
+
+int fat_rmdir(const char *path)
+{
+ return( _FAT_unlink_r(&__REENT, path) );
+}
+
+int fat_lstat(const char *path, struct stat *buf)
+{
+ return( _FAT_stat_r (&__REENT, path, buf) );
+}
+
+DIR_ENTRY* fat_readdir_ex(DIR_STATE_STRUCT *dirp, struct stat *statbuf)
+{
+ int isValid;
+
+ isValid = _FAT_dirnext_r (&__REENT, dirp, statbuf);
+ if(0 != isValid)
+ return NULL;
+
+ return( &(dirp->currentEntry) );
+}
+
diff --git a/sdk-modifications/libsrc/fs/fs_api.h b/sdk-modifications/libsrc/fs/fs_api.h new file mode 100644 index 0000000..fa4ae07 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fs_api.h @@ -0,0 +1,130 @@ +#ifndef __FS_API_H__
+#define __FS_API_H__
+//v1.0
+
+#include "sys/stat.h"
+#include "fatfile.h"
+#include "fatdir.h"
+
+extern struct _reent __REENT;
+typedef unsigned int mode_t;
+
+extern int fat_init(void);
+
+extern FILE_STRUCT* fat_fopen(const char *file, const char *mode);
+
+extern size_t fat_fread(void *buf, size_t size, size_t count, FILE_STRUCT *fp);
+
+extern size_t fat_fwrite(const void *buf, size_t size, size_t count, FILE_STRUCT *fp);
+
+extern int fat_fclose(FILE_STRUCT *fp);
+
+extern int fat_fseek(FILE_STRUCT *fp, long offset, int whence);
+
+extern long fat_ftell(FILE_STRUCT *fp);
+
+extern int fat_feof(FILE_STRUCT *fp);
+
+extern int fat_ferror(FILE_STRUCT *fp);
+
+extern void fat_clearerr(FILE_STRUCT *fp);
+
+extern int fat_fflush(FILE_STRUCT *fp);
+
+extern int fat_fgetc(FILE_STRUCT *fp);
+
+extern char* fat_fgets(char *buf, int n, FILE_STRUCT *fp);
+
+extern int fat_fputc(int ch, FILE_STRUCT *fp);
+
+extern int fat_fputs(const char *s, FILE_STRUCT *fp);
+
+extern int fat_remove(const char *filename);
+
+extern int fat_rename(const char *oldName, const char *newName);
+
+extern int fat_setHidden(const char *name, unsigned char hide);
+
+extern int fat_isHidden(struct stat *st);
+
+extern int fat_getShortName(const char *fullName, char *outName);
+
+extern void fat_rewind(FILE_STRUCT *fp);
+
+extern int fat_fstat(int fildes, struct stat *buf);
+
+extern int fat_fprintf(void* fp, const char *format, ...);
+
+extern int fat_fscanf(FILE_STRUCT *fp, const char *format, ...);
+
+extern DIR_STATE_STRUCT* fat_opendir(const char *name);
+
+extern DIR_ENTRY* fat_readdir(DIR_STATE_STRUCT *dirp);
+
+extern long fat_telldir(DIR_STATE_STRUCT *dirp);
+
+extern void fat_seekdir(DIR_STATE_STRUCT *dirp, long int loc);
+
+extern int fat_closedir(DIR_STATE_STRUCT *dirp);
+
+extern int fat_chdir(const char *path);
+
+extern char* fat_getcwd(char *buf, size_t size);
+
+extern int fat_mkdir(const char *path, mode_t mode);
+
+extern int fat_rmdir(const char *path);
+
+extern int fat_lstat(const char *path, struct stat *buf);
+
+extern DIR_ENTRY* fat_readdir_ex(DIR_STATE_STRUCT *dirp, struct stat *statbuf);
+
+//#define S_ISDIR(st) (st.st_mode & S_IFDIR)
+
+#define FILE FILE_STRUCT
+#define fopen fat_fopen
+#define fread fat_fread
+#define fwrite fat_fwrite
+#define fclose fat_fclose
+#define fseek fat_fseek
+#define ftell fat_ftell
+#define feof fat_feof
+#define ferror fat_ferror
+#define fclearerr fat_clearerr
+#define fflush fat_fflush
+#define fgetc fat_fgetc
+#define fgets fat_fgets
+#define fputc fat_fputc
+#define fputs fat_fputs
+#define fprintf fat_fprintf
+#define fscanf fat_fscanf
+#define remove fat_remove
+#define fhidden fat_isHidden
+
+#define DIR DIR_STATE_STRUCT
+#define dirent DIR_ENTRY
+#define opendir fat_opendir
+#define readdir fat_readdir
+#define telldir fat_telldir
+#define seekdir fat_seekdir
+#define closedir fat_closedir
+#define chdir fat_chdir
+#define getcwd fat_getcwd
+#define mkdir fat_mkdir
+#define rmdir fat_rmdir
+
+#define lstat fat_lstat
+#define fstat fat_fstat
+
+#define S_ISHID(st_mode) ((st_mode & S_IHIDDEN) != 0)
+
+//the extended version of readdir_ex
+#define readdir_ex fat_readdir_ex
+
+#define MAX_PATH 512
+#define MAX_FILE 512
+
+//Misc function
+extern bool fat_getDiskSpaceInfo( char * diskName, unsigned int *total, unsigned int *used, unsigned int *freeSpace );
+
+#endif //__FS_API_H__
diff --git a/sdk-modifications/libsrc/fs/fs_cache.h b/sdk-modifications/libsrc/fs/fs_cache.h new file mode 100644 index 0000000..1abae66 --- /dev/null +++ b/sdk-modifications/libsrc/fs/fs_cache.h @@ -0,0 +1,125 @@ +/* + cache.h + The cache is not visible to the user. It should be flushed + when any file is closed or changes are made to the filesystem. + + This cache implements a least-used-page replacement policy. This will + distribute sectors evenly over the pages, so if less than the maximum + pages are used at once, they should all eventually remain in the cache. + This also has the benefit of throwing out old sectors, so as not to keep + too many stale pages around. + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _CACHE_H +#define _CACHE_H + +#include "fs_common.h" +#include "disc_io/disc_io.h" + +#define CACHE_PAGE_SIZE BYTES_PER_READ + +typedef struct { + u32 sector; + u32 count; + bool dirty; +} CACHE_ENTRY; + +typedef struct { + const IO_INTERFACE* disc; + u32 numberOfPages; + CACHE_ENTRY* cacheEntries; + u8* pages; +} CACHE; + + +/* +Read data from a sector in the cache +If the sector is not in the cache, it will be swapped in +offset is the position to start reading from +size is the amount of data to read +Precondition: offset + size <= BYTES_PER_READ +*/ +bool _FAT_cache_readPartialSector (CACHE* cache, void* buffer, u32 sector, u32 offset, u32 size); + +/* +Write data to a sector in the cache +If the sector is not in the cache, it will be swapped in. +When the sector is swapped out, the data will be written to the disc +offset is the position to start reading from +size is the amount of data to read +Precondition: offset + size <= BYTES_PER_READ +*/ +bool _FAT_cache_writePartialSector (CACHE* cache, const void* buffer, u32 sector, u32 offset, u32 size); + +/* +some where call _FAT_cache_writePartialSector to cache sector m , but later, another +place(in fwrite function) directly write data to sector m, in this case, need to +cancel the dirty state of sector m +*/ +void _FAT_cache_writePartialSector_check (CACHE* cache, u32 sector, u32 num, const void* buffer); + +/* +Write data to a sector in the cache, zeroing the sector first +If the sector is not in the cache, it will be swapped in. +When the sector is swapped out, the data will be written to the disc +offset is the position to start reading from +size is the amount of data to read +Precondition: offset + size <= BYTES_PER_READ +*/ +bool _FAT_cache_eraseWritePartialSector (CACHE* cache, const void* buffer, u32 sector, u32 offset, u32 size); + +/* +Read a full sector from the cache +*/ +static inline bool _FAT_cache_readSector (CACHE* cache, void* buffer, u32 sector) { + return _FAT_cache_readPartialSector (cache, buffer, sector, 0, BYTES_PER_READ); +} + +/* +Write a full sector to the cache +*/ +static inline bool _FAT_cache_writeSector (CACHE* cache, const void* buffer, u32 sector) { + return _FAT_cache_writePartialSector (cache, buffer, sector, 0, BYTES_PER_READ); +} + +/* +Write any dirty sectors back to disc and clear out the contents of the cache +*/ +bool _FAT_cache_flush (CACHE* cache); + +/* +Clear out the contents of the cache without writing any dirty sectors first +*/ +void _FAT_cache_invalidate (CACHE* cache); + +CACHE* _FAT_cache_constructor (u32 numberOfPages, const IO_INTERFACE* discInterface); + +void _FAT_cache_destructor (CACHE* cache); + +#endif // _CACHE_H diff --git a/sdk-modifications/libsrc/fs/fs_common.h b/sdk-modifications/libsrc/fs/fs_common.h new file mode 100644 index 0000000..ce1cfff --- /dev/null +++ b/sdk-modifications/libsrc/fs/fs_common.h @@ -0,0 +1,129 @@ +/* + common.h + Common definitions and included files for the FATlib + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _COMMON_H +#define _COMMON_H + +// When compiling for NDS, make sure NDS is defined +#ifndef NDS + #if defined ARM9 || defined ARM7 + #define NDS + #endif +#endif + +#if 0 +#ifdef NDS + #include <nds/jtypes.h> +#else + #include "gba_types.h" +#endif +#endif + +#define BYTES_PER_READ 512 + +#ifndef NULL + #define NULL 0 +#endif + +#ifndef bool +#define bool int +#endif + +#ifndef false +#define false 0 +#endif + +#ifndef true +#define true 1 +#endif + +#ifndef u8 +#define u8 unsigned char +#endif + +#ifndef u16 +#define u16 unsigned short +#endif + +#ifndef u32 +#define u32 unsigned long +#endif + +#ifndef s32 +#define s32 long +#endif + +struct _reent +{ + /* FILE is a big struct and may change over time. To try to achieve binary + compatibility with future versions, put stdin,stdout,stderr here. + These are pointers into member __sf defined below. */ +// __FILE *_stdin, *_stdout, *_stderr; /* XXX */ + + int _errno; /* local copy of errno */ + +// int _inc; /* used by tmpnam */ + +// char *_emergency; + +// int __sdidinit; /* 1 means stdio has been init'd */ + +// int _current_category; /* unused */ +// _CONST char *_current_locale; /* unused */ + +// struct _mprec *_mp; + +// void _EXFNPTR(__cleanup, (struct _reent *)); + +// int _gamma_signgam; + + /* used by some fp conversion routines */ +// int _cvtlen; /* should be size_t */ +// char *_cvtbuf; + +// struct _rand48 *_r48; +// struct __tm *_localtime_buf; +// char *_asctime_buf; + + /* signal info */ +// void (**(_sig_func))(int); + + /* atexit stuff */ +// struct _atexit *_atexit; +// struct _atexit _atexit0; + +// struct _glue __sglue; /* root of glue chain */ +// __FILE *__sf; /* file descriptors */ +// struct _misc_reent *_misc; /* strtok, multibyte states */ +// char *_signal_buf; /* strsignal */ +}; + +#endif // _COMMON_H diff --git a/sdk-modifications/libsrc/fs/fs_unicode.c b/sdk-modifications/libsrc/fs/fs_unicode.c new file mode 100644 index 0000000..2f1c1ed --- /dev/null +++ b/sdk-modifications/libsrc/fs/fs_unicode.c @@ -0,0 +1,173 @@ +//fs_unicode.c + +#include <string.h>
+#include "fs_common.h"
+
+//void _FAT_unicode_init_default() // ANSI CODE PAGE
+//{
+// _L2UTable = NULL;
+// _U2LTable = NULL;
+// _ankTable = NULL;
+//}
+
+static inline const char* _FAT_utf8decode(const char* utf8, u16 *ucs)
+{
+ unsigned char c = *utf8++;
+ unsigned long code;
+ int tail = 0;
+
+ if ((c <= 0x7f) || (c >= 0xc2)) {
+ /* Start of new character. */
+ if (c < 0x80) { /* U-00000000 - U-0000007F, 1 byte */
+ code = c;
+ } else if (c < 0xe0) { /* U-00000080 - U-000007FF, 2 bytes */
+ tail = 1;
+ code = c & 0x1f;
+ } else if (c < 0xf0) { /* U-00000800 - U-0000FFFF, 3 bytes */
+ tail = 2;
+ code = c & 0x0f;
+ } else if (c < 0xf5) { /* U-00010000 - U-001FFFFF, 4 bytes */
+ tail = 3;
+ code = c & 0x07;
+ } else {
+ /* Invalid size. */
+ code = 0;
+ }
+
+ while (tail-- && ((c = *utf8++) != 0)) {
+ if ((c & 0xc0) == 0x80) {
+ /* Valid continuation character. */
+ code = (code << 6) | (c & 0x3f);
+
+ } else {
+ /* Invalid continuation char */
+ code = 0xfffd;
+ utf8--;
+ break;
+ }
+ }
+ } else {
+ /* Invalid UTF-8 char */
+ code = 0;
+ }
+ /* currently we don't support chars above U-FFFF */
+ *ucs = (code < 0x10000) ? code : 0;
+ return utf8;
+}
+
+void _FAT_utf8_to_unicode16( const char* src, unsigned short* dest )
+{
+ while('\0' != *src)
+ {
+ src = _FAT_utf8decode(src, dest++); + } +
+ *dest = '\0';
+}
+
+#if 0
+static inline int _FAT_utf8coding(const u16* ucs, char* dest)
+{
+ int len= 0;
+
+ if (*ucs < 0x80) //one byte
+ {
+ dest[len++] = *ucs;
+ }
+ else if (*ucs < 0x800) //two bytes
+ {
+ dest[len++] = 0xC0 | (*ucs >> 6 & 0x1F);
+ dest[len++] = 0x80 | (*ucs & 0x3F);
+ }
+ else //if(*ucs < 0x10000) //three bytes
+ {
+ dest[len++] = 0xE0 | (*ucs >> 12);
+ dest[len++] = 0x80 | (*ucs >>6 & 0x3F);
+ dest[len++] = 0x80 | (*ucs &0x3F);
+ }
+
+ return len;
+}
+#endif
+
+void _FAT_unicode16_to_utf8( const u16* src, char* dest)
+{
+ int len=0;
+ while(*src)
+ {
+ if (*src < 0x80) //1 byte
+ {
+ dest[len++] = *src;
+ }
+ else if (*src < 0x800) //2 bytes
+ {
+ dest[len++] = 0xC0 | (*src >> 6 & 0x1F);
+ dest[len++] = 0x80 | (*src & 0x3F);
+ }
+ else //if(*src < 0x10000) //3 bytes
+ {
+ dest[len++] = 0xE0 | (*src >> 12);
+ dest[len++] = 0x80 | (*src >>6 & 0x3F);
+ dest[len++] = 0x80 | (*src &0x3F);
+ }
+ src ++;
+ }
+ dest[len] = 0;
+}
+
+u32 _unistrnlen( const u16* unistr, u32 maxlen )
+{
+ const u16 * pstr = NULL;
+ u32 len = 0;
+ if( NULL == unistr )
+ return 0;
+
+ if( 0 == maxlen )
+ return 0;
+
+ pstr = unistr;
+
+ while( len < maxlen && *pstr != 0x0000 )
+ {
+ ++len;
+ ++pstr;
+ }
+ return len;
+}
+
+int _unistrncmp( const u16* src, const u16* dest, u32 maxlen )
+{
+ if( NULL == src || NULL == dest )
+ {
+ if( src == dest ) return 0;
+ return (NULL == src ) ? -1 : 1;
+ }
+
+ while( *src == *dest && maxlen && *src != 0x0000 && *dest != 0x0000 )
+ {
+ ++src;
+ ++dest;
+ --maxlen;
+ }
+ if( 0 == maxlen ) return 0;
+
+ return *src > *dest ? 1 : -1;
+}
+
+const u16 * _unistrchr( const u16 * str, u16 unichar )
+{
+ if( NULL == str )
+ return NULL;
+
+ while( *str != unichar && *str != 0x0000 )
+ {
+ ++str;
+ }
+ return str;
+}
+
+int _uniisalnum( u8 ch )
+{
+ return isalnum( ch );
+}
+
diff --git a/sdk-modifications/libsrc/fs/fs_unicode.h b/sdk-modifications/libsrc/fs/fs_unicode.h new file mode 100644 index 0000000..45e9d0a --- /dev/null +++ b/sdk-modifications/libsrc/fs/fs_unicode.h @@ -0,0 +1,16 @@ +#ifndef __FS_UNICODE_H__ +#define __FS_UNICODE_H__ + +extern void _FAT_utf8_to_unicode16( const char* src, u16* dest ); + +extern void _FAT_unicode16_to_utf8( const u16* src, char* dest); + +extern u32 _unistrnlen( const u16* unistr, u32 maxlen ); + +extern int _unistrncmp( const u16 * src, const u16 * dest, u32 maxlen ); + +extern const u16 * _unistrchr( const u16 * str, u16 unichar ); + +int _uniisalnum( u8 ch ); + +#endif //__FS_UNICODE_H__ diff --git a/sdk-modifications/libsrc/fs/libfat.c b/sdk-modifications/libsrc/fs/libfat.c new file mode 100644 index 0000000..1956d13 --- /dev/null +++ b/sdk-modifications/libsrc/fs/libfat.c @@ -0,0 +1,174 @@ +/* + libfat.c + Simple functionality for startup, mounting and unmounting of FAT-based devices. + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release + + 2006-08-13 - Chishm + * Moved all externally visible directory related functions to fatdir + + 2006-08-14 - Chishm + * Added extended devoptab_t functions + + 2007-01-10 - Chishm + * fatInit now sets the correct path when setAsDefaultDevice + + 2007-01-11 - Chishm + * Added missing #include <unistd.h> +*/ + +/* + +*/ + +#include <unistd.h> + +#include "fs_common.h" +#include "partition.h" +#include "fatfile.h" +#include "fatdir.h" +#include "fs_unicode.h" +#include "io_ds2_mmcf.h" + +#define GBA_DEFAULT_CACHE_PAGES 2 +#define NDS_DEFAULT_CACHE_PAGES 8 + +#if 0 +const devoptab_t dotab_fat = { + "fat", + sizeof (FILE_STRUCT), + _FAT_open_r, + _FAT_close_r, + _FAT_write_r, + _FAT_read_r, + _FAT_seek_r, + _FAT_fstat_r, + _FAT_stat_r, + _FAT_link_r, + _FAT_unlink_r, + _FAT_chdir_r, + _FAT_rename_r, + _FAT_mkdir_r, + sizeof (DIR_STATE_STRUCT), + _FAT_diropen_r, + _FAT_dirreset_r, + _FAT_dirnext_r, + _FAT_dirclose_r +}; +#endif + +#if 0 +bool fatInit (u32 cacheSize, bool setAsDefaultDevice) +{ +#ifdef NDS + bool slot1Device, slot2Device; + + // add unicode suppport + //file name string coding are set to UTF8, other coding needed conveted to UTF8 by the caller + //_FAT_unicode_init_default(); + + // Try mounting both slots + slot1Device = _FAT_partition_mount (PI_SLOT_1, cacheSize); + slot2Device = _FAT_partition_mount (PI_SLOT_2, cacheSize); + + // Choose the default device + if (slot1Device) { + _FAT_partition_setDefaultInterface (PI_SLOT_1); + } else if (slot2Device) { + _FAT_partition_setDefaultInterface (PI_SLOT_2); + } else { + return false; + } + +#else // not defined NDS + bool cartSlotDevice; + + cartSlotDevice = _FAT_partition_mount (PI_CART_SLOT, cacheSize); + + if (cartSlotDevice) { + _FAT_partition_setDefaultInterface (PI_CART_SLOT); + } else { + return false; + } + +#endif // defined NDS + + AddDevice (&dotab_fat); + + if (setAsDefaultDevice) { + chdir ("fat:/"); + } + + return true; +} +#endif + +#if 0 +bool fatInitDefault (void) { +#ifdef NDS + return fatInit (NDS_DEFAULT_CACHE_PAGES, true); +#else + return fatInit (GBA_DEFAULT_CACHE_PAGES, true); +#endif +} +#endif + +bool _FAT_Init(void) +{ + // Try mounting sd/mmc + bool sdOK = false; + if( _io_ds2_mmcf.fn_startup() == 0) //NO ERROR + sdOK = _FAT_partition_freeMount( PI_DEFAULT, &_io_ds2_mmcf, 8); + else + return false; + + if(sdOK == true) + fat_chdir ("fat:/"); + + return sdOK; +} + +bool fatMountNormalInterface (PARTITION_INTERFACE partitionNumber, u32 cacheSize) { + return _FAT_partition_mount (partitionNumber, cacheSize); +} + +bool fatMountCustomInterface (const IO_INTERFACE* device, u32 cacheSize) { + return _FAT_partition_mountCustomInterface (device, cacheSize); +} + +bool fatUnmount (PARTITION_INTERFACE partitionNumber) { + return _FAT_partition_unmount (partitionNumber); +} + + +bool fatUnsafeUnmount (PARTITION_INTERFACE partitionNumber) { + return _FAT_partition_unsafeUnmount (partitionNumber); +} + +bool fatSetDefaultInterface (PARTITION_INTERFACE partitionNumber) { + return _FAT_partition_setDefaultInterface (partitionNumber); +} diff --git a/sdk-modifications/libsrc/fs/mem_allocate.h b/sdk-modifications/libsrc/fs/mem_allocate.h new file mode 100644 index 0000000..7bbe8de --- /dev/null +++ b/sdk-modifications/libsrc/fs/mem_allocate.h @@ -0,0 +1,47 @@ +/* + mem_allocate.h + Memory allocation and destruction calls + Replace these calls with custom allocators if + malloc is unavailable + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _MEM_ALLOCATE_H +#define _MEM_ALLOCATE_H + +#include "ds2_malloc.h" + +static inline void* _FAT_mem_allocate (size_t size) { + return ((void*)malloc (size)); +} + +static inline void _FAT_mem_free (void* mem) { + return (free ((void*)mem)); +} + +#endif // _MEM_ALLOCATE_H diff --git a/sdk-modifications/libsrc/fs/partition.c b/sdk-modifications/libsrc/fs/partition.c new file mode 100644 index 0000000..1791b40 --- /dev/null +++ b/sdk-modifications/libsrc/fs/partition.c @@ -0,0 +1,501 @@ +/*
+ partition.c
+ Functions for mounting and dismounting partitions
+ on various block devices.
+
+ Copyright (c) 2006 Michael "Chishm" Chisholm
+
+ Redistribution and use in source and binary forms, with or without modification,
+ are permitted provided that the following conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+ this list of conditions and the following disclaimer in the documentation and/or
+ other materials provided with the distribution.
+ 3. The name of the author may not be used to endorse or promote products derived
+ from this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ 2006-07-11 - Chishm
+ * Original release
+
+ 2006-08-10 - Chishm
+ * Fixed problem when openning files starting with "fat"
+
+ 2006-10-28 - Chishm
+ * _partitions changed to _FAT_partitions to maintain the same style of naming as the functions
+*/
+//version 1.1
+//Note: fix bug in _FAT_partition_setDefaultPartition() function +
+#include "partition.h"
+#include "bit_ops.h"
+#include "file_allocation_table.h"
+#include "directory.h"
+
+#include <string.h>
+#include <ctype.h>
+
+#include "mem_allocate.h"
+
+/*
+This device name, as known by DevKitPro
+*/
+const char* DEVICE_NAME = "fat";
+
+/*
+Data offsets
+*/
+
+// BIOS Parameter Block offsets
+enum BPB {
+ BPB_jmpBoot = 0x00,
+ BPB_OEMName = 0x03,
+ // BIOS Parameter Block
+ BPB_bytesPerSector = 0x0B,
+ BPB_sectorsPerCluster = 0x0D,
+ BPB_reservedSectors = 0x0E,
+ BPB_numFATs = 0x10,
+ BPB_rootEntries = 0x11,
+ BPB_numSectorsSmall = 0x13,
+ BPB_mediaDesc = 0x15,
+ BPB_sectorsPerFAT = 0x16,
+ BPB_sectorsPerTrk = 0x18,
+ BPB_numHeads = 0x1A,
+ BPB_numHiddenSectors = 0x1C,
+ BPB_numSectors = 0x20,
+ // Ext BIOS Parameter Block for FAT16
+ BPB_FAT16_driveNumber = 0x24,
+ BPB_FAT16_reserved1 = 0x25,
+ BPB_FAT16_extBootSig = 0x26,
+ BPB_FAT16_volumeID = 0x27,
+ BPB_FAT16_volumeLabel = 0x2B,
+ BPB_FAT16_fileSysType = 0x36,
+ // Bootcode
+ BPB_FAT16_bootCode = 0x3E,
+ // FAT32 extended block
+ BPB_FAT32_sectorsPerFAT32 = 0x24,
+ BPB_FAT32_extFlags = 0x28,
+ BPB_FAT32_fsVer = 0x2A,
+ BPB_FAT32_rootClus = 0x2C,
+ BPB_FAT32_fsInfo = 0x30,
+ BPB_FAT32_bkBootSec = 0x32,
+ // Ext BIOS Parameter Block for FAT32
+ BPB_FAT32_driveNumber = 0x40,
+ BPB_FAT32_reserved1 = 0x41,
+ BPB_FAT32_extBootSig = 0x42,
+ BPB_FAT32_volumeID = 0x43,
+ BPB_FAT32_volumeLabel = 0x47,
+ BPB_FAT32_fileSysType = 0x52,
+ // Bootcode
+ BPB_FAT32_bootCode = 0x5A,
+ BPB_bootSig_55 = 0x1FE,
+ BPB_bootSig_AA = 0x1FF
+};
+
+
+#ifdef NDS
+#define MAXIMUM_PARTITIONS 4
+PARTITION* _FAT_partitions[MAXIMUM_PARTITIONS] = {NULL};
+#else // not defined NDS
+#define MAXIMUM_PARTITIONS 1
+PARTITION* _FAT_partitions[MAXIMUM_PARTITIONS] = {NULL};
+#endif // defined NDS
+
+// Use a single static buffer for the partitions
+
+
+static PARTITION* _FAT_partition_constructor ( const IO_INTERFACE* disc, u32 cacheSize) {
+ PARTITION* partition;
+ int i;
+ u32 bootSector;
+ u8 sectorBuffer[BYTES_PER_READ] = {0};
+
+ // Read first sector of disc
+ if ( !_FAT_disc_readSectors (disc, 0, 1, sectorBuffer)) {
+ return NULL;
+ }
+
+ // Make sure it is a valid MBR or boot sector
+ if ( (sectorBuffer[BPB_bootSig_55] != 0x55) || (sectorBuffer[BPB_bootSig_AA] != 0xAA)) {
+ return NULL;
+ }
+
+ // Check if there is a FAT string, which indicates this is a boot sector
+ if ((sectorBuffer[0x36] == 'F') && (sectorBuffer[0x37] == 'A') && (sectorBuffer[0x38] == 'T')) {
+ bootSector = 0;
+ } else if ((sectorBuffer[0x52] == 'F') && (sectorBuffer[0x53] == 'A') && (sectorBuffer[0x54] == 'T')) {
+ // Check for FAT32
+ bootSector = 0;
+ } else {
+ // This is an MBR
+ // Find first valid partition from MBR
+ // First check for an active partition
+ for (i=0x1BE; (i < 0x1FE) && (sectorBuffer[i] != 0x80); i+= 0x10);
+ // If it didn't find an active partition, search for any valid partition
+ if (i == 0x1FE) {
+ for (i=0x1BE; (i < 0x1FE) && (sectorBuffer[i+0x04] == 0x00); i+= 0x10);
+ }
+
+ // Go to first valid partition
+ if ( i != 0x1FE) {
+ // Make sure it found a partition
+ bootSector = u8array_to_u32(sectorBuffer, 0x8 + i);
+ } else {
+ bootSector = 0; // No partition found, assume this is a MBR free disk
+ }
+ }
+
+ // Read in boot sector
+ if ( !_FAT_disc_readSectors (disc, bootSector, 1, sectorBuffer)) {
+ return NULL;
+ }
+
+ partition = (PARTITION*) _FAT_mem_allocate (sizeof(PARTITION));
+ if (partition == NULL) {
+ return NULL;
+ }
+
+ // Set partition's disc interface
+ partition->disc = disc;
+
+ // Store required information about the file system
+ partition->fat.sectorsPerFat = u8array_to_u16(sectorBuffer, BPB_sectorsPerFAT);
+ if (partition->fat.sectorsPerFat == 0) {
+ partition->fat.sectorsPerFat = u8array_to_u32( sectorBuffer, BPB_FAT32_sectorsPerFAT32);
+ }
+
+ partition->numberOfSectors = u8array_to_u16( sectorBuffer, BPB_numSectorsSmall);
+ if (partition->numberOfSectors == 0) {
+ partition->numberOfSectors = u8array_to_u32( sectorBuffer, BPB_numSectors);
+ }
+
+ partition->bytesPerSector = BYTES_PER_READ; // Sector size is redefined to be 512 bytes
+ partition->sectorsPerCluster = sectorBuffer[BPB_sectorsPerCluster] * u8array_to_u16(sectorBuffer, BPB_bytesPerSector) / BYTES_PER_READ;
+ partition->bytesPerCluster = partition->bytesPerSector * partition->sectorsPerCluster;
+ partition->fat.fatStart = bootSector + u8array_to_u16(sectorBuffer, BPB_reservedSectors);
+
+ partition->rootDirStart = partition->fat.fatStart + (sectorBuffer[BPB_numFATs] * partition->fat.sectorsPerFat);
+ partition->dataStart = partition->rootDirStart + (( u8array_to_u16(sectorBuffer, BPB_rootEntries) * DIR_ENTRY_DATA_SIZE) / partition->bytesPerSector);
+
+ partition->totalSize = (partition->numberOfSectors - partition->dataStart) * partition->bytesPerSector;
+
+ // Store info about FAT
+ partition->fat.lastCluster = (partition->numberOfSectors - partition->dataStart) / partition->sectorsPerCluster;
+ partition->fat.firstFree = CLUSTER_FIRST;
+
+ if (partition->fat.lastCluster < CLUSTERS_PER_FAT12) {
+ partition->filesysType = FS_FAT12; // FAT12 volume
+ } else if (partition->fat.lastCluster < CLUSTERS_PER_FAT16) {
+ partition->filesysType = FS_FAT16; // FAT16 volume
+ } else {
+ partition->filesysType = FS_FAT32; // FAT32 volume
+ }
+
+ if (partition->filesysType != FS_FAT32) {
+ partition->rootDirCluster = FAT16_ROOT_DIR_CLUSTER;
+ } else {
+ // Set up for the FAT32 way
+ partition->rootDirCluster = u8array_to_u32(sectorBuffer, BPB_FAT32_rootClus);
+ // Check if FAT mirroring is enabled
+ if (!(sectorBuffer[BPB_FAT32_extFlags] & 0x80)) {
+ // Use the active FAT
+ partition->fat.fatStart = partition->fat.fatStart + ( partition->fat.sectorsPerFat * (sectorBuffer[BPB_FAT32_extFlags] & 0x0F));
+ }
+ }
+
+ // Create a cache to use
+ partition->cache = _FAT_cache_constructor (cacheSize, partition->disc);
+
+ // Set current directory to the root
+ partition->cwdCluster = partition->rootDirCluster;
+
+ // Check if this disc is writable, and set the readOnly property appropriately
+ partition->readOnly = !(_FAT_disc_features(disc) & FEATURE_MEDIUM_CANWRITE);
+
+ // There are currently no open files on this partition
+ partition->openFileCount = 0;
+
+ return partition;
+}
+
+static void _FAT_partition_destructor (PARTITION* partition) {
+ _FAT_cache_destructor (partition->cache);
+ _FAT_disc_shutdown (partition->disc);
+ _FAT_mem_free (partition);
+}
+
+bool _FAT_partition_mount (PARTITION_INTERFACE partitionNumber, u32 cacheSize)
+{
+#ifdef NDS
+ int i;
+ const IO_INTERFACE* disc = NULL;
+
+ if (_FAT_partitions[partitionNumber] != NULL) {
+ return false;
+ }
+
+ switch (partitionNumber) {
+ case PI_SLOT_1:
+ // Mount the disc in slot 1
+ disc = _FAT_disc_dsSlotFindInterface ();
+ break;
+ case PI_SLOT_2:
+ // Mount the disc in slot 2
+ disc = _FAT_disc_gbaSlotFindInterface ();
+ break;
+ case PI_DEFAULT:
+ case PI_CUSTOM:
+ default:
+ // Anything else has to be handled specially
+ return false;
+ break;
+ }
+
+ if (disc == NULL) {
+ return false;
+ }
+
+ // See if that disc is already in use, if so, then just copy the partition pointer
+ for (i = 0; i < MAXIMUM_PARTITIONS; i++) {
+ if ((_FAT_partitions[i] != NULL) && (_FAT_partitions[i]->disc == disc)) {
+ _FAT_partitions[partitionNumber] = _FAT_partitions[i];
+ return true;
+ }
+ }
+
+ _FAT_partitions[partitionNumber] = _FAT_partition_constructor (disc, cacheSize);
+
+ if (_FAT_partitions[partitionNumber] == NULL) {
+ return false;
+ }
+
+#else // not defined NDS
+ const IO_INTERFACE* disc = NULL;
+
+ if (_FAT_partitions[partitionNumber] != NULL) {
+ return false;
+ }
+
+ // Only ever one partition on GBA
+ disc = _FAT_disc_gbaSlotFindInterface ();
+ _FAT_partitions[partitionNumber] = _FAT_partition_constructor (disc, cacheSize);
+
+#endif // defined NDS
+
+ return true;
+}
+
+bool _FAT_partition_mountCustomInterface (const IO_INTERFACE* device, u32 cacheSize) {
+#ifdef NDS
+ int i;
+
+ if (_FAT_partitions[PI_CUSTOM] != NULL) {
+ return false;
+ }
+
+ if (device == NULL) {
+ return false;
+ }
+
+ // See if that disc is already in use, if so, then just copy the partition pointer
+ for (i = 0; i < MAXIMUM_PARTITIONS; i++) {
+ if ((_FAT_partitions[i] != NULL) && (_FAT_partitions[i]->disc == device)) {
+ _FAT_partitions[PI_CUSTOM] = _FAT_partitions[i];
+ return true;
+ }
+ }
+
+ _FAT_partitions[PI_CUSTOM] = _FAT_partition_constructor (device, cacheSize);
+
+ if (_FAT_partitions[PI_CUSTOM] == NULL) {
+ return false;
+ }
+
+#else // not defined NDS
+ if (_FAT_partitions[PI_CART_SLOT] != NULL) {
+ return false;
+ }
+
+ if (device == NULL) {
+ return false;
+ }
+
+ // Only ever one partition on GBA
+ _FAT_partitions[PI_CART_SLOT] = _FAT_partition_constructor (device, cacheSize);
+
+#endif // defined NDS
+
+ return true;
+}
+
+bool _FAT_partition_setDefaultInterface (PARTITION_INTERFACE partitionNumber)
+{
+#ifdef NDS // Can only set the default partition when there is more than 1, so doesn't apply to GBA
+ if ((partitionNumber < 1) || (partitionNumber >= MAXIMUM_PARTITIONS)) {
+ return false;
+ }
+
+ if (_FAT_partitions[partitionNumber] == NULL) {
+ return false;
+ }
+
+ _FAT_partitions[PI_DEFAULT] = _FAT_partitions[partitionNumber];
+#endif
+ return true;
+}
+
+bool _FAT_partition_setDefaultPartition (PARTITION* partition) {
+#ifdef NDS // Can only set the default partition when there is more than 1, so doesn't apply to GBA
+ int i;
+
+ if (partition == NULL) {
+ return false;
+ }
+ + if(_FAT_partitions[PI_DEFAULT] == partition) //Already is the default partition
+ return true; +
+ // Ensure that this device is already in the list
+ for (i = 1; i < MAXIMUM_PARTITIONS; i++) {
+ if (_FAT_partitions[i] == partition) {
+ break;
+ } + }
+
+ // It wasn't in the list, so fail
+ if (i == MAXIMUM_PARTITIONS) {
+ return false;
+ } +
+ // Change the default partition / device to this one
+ _FAT_partitions[PI_DEFAULT] = partition;
+
+#endif
+ return true;
+}
+
+bool _FAT_partition_unmount (PARTITION_INTERFACE partitionNumber) {
+ int i;
+ PARTITION* partition = _FAT_partitions[partitionNumber];
+
+ if (partition == NULL) {
+ return false;
+ }
+
+ if (partition->openFileCount > 0) {
+ // There are still open files that need closing
+ return false;
+ }
+
+ // Remove all references to this partition
+ for (i = 0; i < MAXIMUM_PARTITIONS; i++) {
+ if (_FAT_partitions[i] == partition) {
+ _FAT_partitions[i] = NULL;
+ }
+ }
+
+ _FAT_partition_destructor (partition);
+ return true;
+}
+
+bool _FAT_partition_unsafeUnmount (PARTITION_INTERFACE partitionNumber) {
+ int i;
+ PARTITION* partition = _FAT_partitions[partitionNumber];
+
+ if (partition == NULL) {
+ return false;
+ }
+
+ // Remove all references to this partition
+ for (i = 0; i < MAXIMUM_PARTITIONS; i++) {
+ if (_FAT_partitions[i] == partition) {
+ _FAT_partitions[i] = NULL;
+ }
+ }
+
+ _FAT_cache_invalidate (partition->cache);
+ _FAT_partition_destructor (partition);
+ return true;
+}
+
+PARTITION* _FAT_partition_getPartitionFromPath (const char* path) {
+#ifdef NDS
+ int namelen;
+ int partitionNumber;
+
+ // Device name extraction code taken from DevKitPro
+ namelen = strlen(DEVICE_NAME);
+ if (strchr (path, ':') == NULL) {
+ // No device specified
+ partitionNumber = PI_DEFAULT;
+ } else if( strncmp(DEVICE_NAME, path, namelen) == 0 ) {
+ if ( path[namelen] == ':' ) {
+ // Only the device name is specified
+ partitionNumber = PI_DEFAULT;
+ } else if (isdigit(path[namelen]) && path[namelen+1] ==':' ) {
+ // Device name and number specified
+ partitionNumber = path[namelen] - '0';
+ } else {
+ // Incorrect device name
+ return NULL;
+ } + } else {
+ // Incorrect device name
+ return NULL;
+ }
+ + if ((partitionNumber < 0) || (partitionNumber >= MAXIMUM_PARTITIONS)) {
+ return NULL;
+ }
+
+ return _FAT_partitions[partitionNumber];
+#else // not defined NDS
+ // Only one possible partition on GBA
+ return _FAT_partitions[PI_CART_SLOT];
+#endif // defined NDS
+}
+
+bool _FAT_partition_freeMount( int partitionNumber, const IO_INTERFACE* device, u32 cacheSize) {
+
+ if( partitionNumber < 0 || partitionNumber > 3 )
+ return false;
+ int i;
+
+ if (device == NULL) {
+ return false;
+ }
+
+ if (_FAT_partitions[partitionNumber] != NULL) {
+ if(_FAT_partitions[partitionNumber] -> disc == device)
+ return true;
+
+ return false;
+ }
+
+ // See if that disc is already in use, if so, then just copy the partition pointer
+ for (i = 0; i < MAXIMUM_PARTITIONS; i++) {
+ if ((_FAT_partitions[i] != NULL) && (_FAT_partitions[i]->disc == device)) {
+ _FAT_partitions[partitionNumber] = _FAT_partitions[i];
+ return true;
+ }
+ }
+
+ _FAT_partitions[partitionNumber] = _FAT_partition_constructor (device, cacheSize);
+
+ if (_FAT_partitions[partitionNumber] == NULL) {
+ return false;
+ } +
+ return true;
+}
diff --git a/sdk-modifications/libsrc/fs/partition.h b/sdk-modifications/libsrc/fs/partition.h new file mode 100644 index 0000000..0777b54 --- /dev/null +++ b/sdk-modifications/libsrc/fs/partition.h @@ -0,0 +1,131 @@ +/* + partition.h + Functions for mounting and dismounting partitions + on various block devices. + + Copyright (c) 2006 Michael "Chishm" Chisholm + + Redistribution and use in source and binary forms, with or without modification, + are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation and/or + other materials provided with the distribution. + 3. The name of the author may not be used to endorse or promote products derived + from this software without specific prior written permission. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + 2006-07-11 - Chishm + * Original release +*/ + +#ifndef _PARTITION_H +#define _PARTITION_H + +#include "fs_common.h" + +#include "disc_io/disc.h" +#include "fs_cache.h" + +// Device name +extern const char* DEVICE_NAME; + +// Filesystem type +typedef enum {FS_UNKNOWN, FS_FAT12, FS_FAT16, FS_FAT32} FS_TYPE; + +#ifdef NDS +typedef enum {PI_DEFAULT, PI_SLOT_1, PI_SLOT_2, PI_CUSTOM} PARTITION_INTERFACE; +#else +typedef enum {PI_CART_SLOT} PARTITION_INTERFACE; +#endif + +typedef struct { + u32 fatStart; + u32 sectorsPerFat; + u32 lastCluster; + u32 firstFree; +} FAT; + +typedef struct { + const IO_INTERFACE* disc; + CACHE* cache; + // Info about the partition + bool readOnly; // If this is set, then do not try writing to the disc + FS_TYPE filesysType; + u32 totalSize; + u32 rootDirStart; + u32 rootDirCluster; + u32 numberOfSectors; + u32 dataStart; + u32 bytesPerSector; + u32 sectorsPerCluster; + u32 bytesPerCluster; + FAT fat; + // Values that may change after construction + u32 cwdCluster; // Current working directory cluser + u32 openFileCount; +} PARTITION; + +/* +Mount the device specified by partitionDevice +PD_DEFAULT is not allowed, use _FAT_partition_setDefaultDevice +PD_CUSTOM is not allowed, use _FAT_partition_mountCustomDevice +*/ +bool _FAT_partition_mount (PARTITION_INTERFACE partitionNumber, u32 cacheSize); + +/* +Mount a partition on a custom device +*/ +bool _FAT_partition_mountCustomInterface (const IO_INTERFACE* device, u32 cacheSize); + + +/* +Free Mount a partition on a custom device +*/ +bool _FAT_partition_freeMount( int partitionNumber, const IO_INTERFACE* device, u32 cacheSize);
+ + +/* +Unmount the partition specified by partitionNumber +If there are open files, it will fail +*/ +bool _FAT_partition_unmount (PARTITION_INTERFACE partitionNumber); + +/* +Forcibly unmount the partition specified by partitionNumber +Any open files on the partition will become invalid +The cache will be invalidated, and any unflushed writes will be lost +*/ +bool _FAT_partition_unsafeUnmount (PARTITION_INTERFACE partitionNumber); + +/* +Set the default device for access by fat: and fat0:, +based on the device number +*/ +bool _FAT_partition_setDefaultInterface (PARTITION_INTERFACE partitionNumber); + +/* +Set the default device for access by fat: and fat0:, +based on the partition pointer +*/ +bool _FAT_partition_setDefaultPartition (PARTITION* partition); + +/* +Return the partition specified in a path +For instance, "fat0:", "fat:", "/" and "fat:/" will all +return the default partition +*/ +PARTITION* _FAT_partition_getPartitionFromPath (const char* path); + +#endif // _PARTITION_H diff --git a/sdk-modifications/libsrc/key/key.c b/sdk-modifications/libsrc/key/key.c new file mode 100644 index 0000000..8a6ad5f --- /dev/null +++ b/sdk-modifications/libsrc/key/key.c @@ -0,0 +1,145 @@ +#include "ds2_timer.h" +#include "ds2io.h" + +#define KEY_REPEAT_TIME 200 //5 times/second +#define KEY_REPEAT_TIME_N (KEY_REPEAT_TIME*1000000/SYSTIME_UNIT) + +#define INPUT_REPEAT_TIME 100 +#define INPUT_REPEAT_TIME_N (INPUT_REPEAT_TIME*1000000/SYSTIME_UNIT) + +static unsigned int _last_key = 0; +static unsigned int _last_key_timestamp = 0; + +/* +* Function: only detect the key pressed or not +*/ +unsigned int getKey(void) +{ + struct key_buf input; + unsigned int new_key, hold_key, ret_key, timestamp; + int flag; + + ds2_getrawInput(&input); + timestamp = getSysTime(); + flag = ((timestamp - _last_key_timestamp) >= KEY_REPEAT_TIME_N) ? 1 : 0; + + input.key &= 0x3FFF; + new_key = (_last_key ^ input.key) & input.key; + hold_key = _last_key & input.key; + + ret_key = 0; + if(hold_key) { + if(flag) + { + ret_key = hold_key; + _last_key_timestamp = timestamp; + } + } + + if(new_key) + { + ret_key |= new_key; + _last_key_timestamp = timestamp; + + _last_key = input.key; + } + + return ret_key; +} + +/* +* Function: can get the detail information about key pressed, hold, or release +*/ +unsigned int getKey1(void) +{ + struct key_buf input; + unsigned int new_key, hold_key, ret_key, timestamp; + int flag; + + ds2_getrawInput(&input); + timestamp = getSysTime(); + flag = ((timestamp - _last_key_timestamp) >= KEY_REPEAT_TIME_N) ? 1 : 0; + + input.key &= 0x3FFF; + new_key = _last_key ^ input.key; + hold_key = _last_key & input.key; + //ret_key[31:16] = last key; + //ret_key[15:0] = new key; + + ret_key = 0; + if(hold_key) { + if(flag) + { + ret_key = (hold_key << 16) | hold_key; + _last_key_timestamp = timestamp; + } + } + + if(new_key) + { + unsigned int tmp_key; + + //have new key pressed + if(new_key & input.key) + { + ret_key |= new_key & input.key; + _last_key_timestamp = timestamp; + } + else + { + ret_key |= (new_key & ~input.key) << 16; + } + + _last_key = input.key; + } + + return ret_key; +} + +static unsigned int _last_input = 0; +static unsigned int _last_input_timestamp = 0; + +/* +* Function: only detect the key pressed or not and touch position +*/ +unsigned int getInput(struct key_buf *input) { + struct key_buf rawin; + unsigned int timestamp, new, hold; + int flag, ret; + + ds2_getrawInput(&rawin); + timestamp = getSysTime(); + flag = ((timestamp - _last_input_timestamp) >= INPUT_REPEAT_TIME_N) ? 1 : 0; + + rawin.key &= 0x3FFF; + new = (rawin.key ^ _last_input) & rawin.key; + hold = rawin.key & _last_input; + + ret = 0; + if(hold && flag) + { + ret = hold; + input->x = rawin.x; + input->y = rawin.y; + + _last_input_timestamp = timestamp; + } + + if(new) + { + ret |= new; + input->x = rawin.x; + input->y = rawin.y; + + _last_input_timestamp = timestamp; + _last_input = rawin.key; + } + + input->key = ret; + return ret > 0; +} + + + + + diff --git a/sdk-modifications/libsrc/key/key.h b/sdk-modifications/libsrc/key/key.h new file mode 100644 index 0000000..21674ec --- /dev/null +++ b/sdk-modifications/libsrc/key/key.h @@ -0,0 +1,31 @@ +#ifndef __KEY_H__ +#define __KEY_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#define KEY_PRESS(key, key_id) (!(key & (key_id<<16)) && (key & key_id)) +#define KEY_HOLD(key, key_id) ((key & (key_id<<16)) && (key & key_id)) +#define KEY_RELEASE(key, key_id) ((key & (key_id<<16)) && !(key & key_id)) + +/* +* Function: only detect the key pressed or not +*/ +unsigned int getKey(void); + +/* +* Function: can get the detail information about key pressed, hold, or release +*/ +unsigned int getKey1(void); + +/* +* Function: detect the key pressed or not and touched position +*/ +extern unsigned int getInput(struct key_buf *input); + +#ifdef __cplusplus +} +#endif + +#endif //__KEY_H__ diff --git a/sdk-modifications/libsrc/key/key.mk b/sdk-modifications/libsrc/key/key.mk new file mode 100644 index 0000000..fa08d7c --- /dev/null +++ b/sdk-modifications/libsrc/key/key.mk @@ -0,0 +1,10 @@ +#key.mk + +SRC += $(KEY_DIR)/key.c + +SSRC += + +INC += -I$(KEY_DIR) + +CFLAGS += + diff --git a/sdk-modifications/libsrc/zlib/README b/sdk-modifications/libsrc/zlib/README new file mode 100644 index 0000000..ee06114 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/README @@ -0,0 +1 @@ +This is a modified source release of zlib. zconf.h removes a reference to sys/types.h, which creates type conflicts on the DS2 SDK. For a pristine source release of zlib, please visit <http://zlib.net/>.
\ No newline at end of file diff --git a/sdk-modifications/libsrc/zlib/adler32.c b/sdk-modifications/libsrc/zlib/adler32.c new file mode 100644 index 0000000..a868f07 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/adler32.c @@ -0,0 +1,179 @@ +/* adler32.c -- compute the Adler-32 checksum of a data stream + * Copyright (C) 1995-2011 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#include "zutil.h" + +#define local static + +local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2)); + +#define BASE 65521 /* largest prime smaller than 65536 */ +#define NMAX 5552 +/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */ + +#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;} +#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1); +#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2); +#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4); +#define DO16(buf) DO8(buf,0); DO8(buf,8); + +/* use NO_DIVIDE if your processor does not do division in hardware -- + try it both ways to see which is faster */ +#ifdef NO_DIVIDE +/* note that this assumes BASE is 65521, where 65536 % 65521 == 15 + (thank you to John Reiser for pointing this out) */ +# define CHOP(a) \ + do { \ + unsigned long tmp = a >> 16; \ + a &= 0xffffUL; \ + a += (tmp << 4) - tmp; \ + } while (0) +# define MOD28(a) \ + do { \ + CHOP(a); \ + if (a >= BASE) a -= BASE; \ + } while (0) +# define MOD(a) \ + do { \ + CHOP(a); \ + MOD28(a); \ + } while (0) +# define MOD63(a) \ + do { /* this assumes a is not negative */ \ + z_off64_t tmp = a >> 32; \ + a &= 0xffffffffL; \ + a += (tmp << 8) - (tmp << 5) + tmp; \ + tmp = a >> 16; \ + a &= 0xffffL; \ + a += (tmp << 4) - tmp; \ + tmp = a >> 16; \ + a &= 0xffffL; \ + a += (tmp << 4) - tmp; \ + if (a >= BASE) a -= BASE; \ + } while (0) +#else +# define MOD(a) a %= BASE +# define MOD28(a) a %= BASE +# define MOD63(a) a %= BASE +#endif + +/* ========================================================================= */ +uLong ZEXPORT adler32(adler, buf, len) + uLong adler; + const Bytef *buf; + uInt len; +{ + unsigned long sum2; + unsigned n; + + /* split Adler-32 into component sums */ + sum2 = (adler >> 16) & 0xffff; + adler &= 0xffff; + + /* in case user likes doing a byte at a time, keep it fast */ + if (len == 1) { + adler += buf[0]; + if (adler >= BASE) + adler -= BASE; + sum2 += adler; + if (sum2 >= BASE) + sum2 -= BASE; + return adler | (sum2 << 16); + } + + /* initial Adler-32 value (deferred check for len == 1 speed) */ + if (buf == Z_NULL) + return 1L; + + /* in case short lengths are provided, keep it somewhat fast */ + if (len < 16) { + while (len--) { + adler += *buf++; + sum2 += adler; + } + if (adler >= BASE) + adler -= BASE; + MOD28(sum2); /* only added so many BASE's */ + return adler | (sum2 << 16); + } + + /* do length NMAX blocks -- requires just one modulo operation */ + while (len >= NMAX) { + len -= NMAX; + n = NMAX / 16; /* NMAX is divisible by 16 */ + do { + DO16(buf); /* 16 sums unrolled */ + buf += 16; + } while (--n); + MOD(adler); + MOD(sum2); + } + + /* do remaining bytes (less than NMAX, still just one modulo) */ + if (len) { /* avoid modulos if none remaining */ + while (len >= 16) { + len -= 16; + DO16(buf); + buf += 16; + } + while (len--) { + adler += *buf++; + sum2 += adler; + } + MOD(adler); + MOD(sum2); + } + + /* return recombined sums */ + return adler | (sum2 << 16); +} + +/* ========================================================================= */ +local uLong adler32_combine_(adler1, adler2, len2) + uLong adler1; + uLong adler2; + z_off64_t len2; +{ + unsigned long sum1; + unsigned long sum2; + unsigned rem; + + /* for negative len, return invalid adler32 as a clue for debugging */ + if (len2 < 0) + return 0xffffffffUL; + + /* the derivation of this formula is left as an exercise for the reader */ + MOD63(len2); /* assumes len2 >= 0 */ + rem = (unsigned)len2; + sum1 = adler1 & 0xffff; + sum2 = rem * sum1; + MOD(sum2); + sum1 += (adler2 & 0xffff) + BASE - 1; + sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem; + if (sum1 >= BASE) sum1 -= BASE; + if (sum1 >= BASE) sum1 -= BASE; + if (sum2 >= (BASE << 1)) sum2 -= (BASE << 1); + if (sum2 >= BASE) sum2 -= BASE; + return sum1 | (sum2 << 16); +} + +/* ========================================================================= */ +uLong ZEXPORT adler32_combine(adler1, adler2, len2) + uLong adler1; + uLong adler2; + z_off_t len2; +{ + return adler32_combine_(adler1, adler2, len2); +} + +uLong ZEXPORT adler32_combine64(adler1, adler2, len2) + uLong adler1; + uLong adler2; + z_off64_t len2; +{ + return adler32_combine_(adler1, adler2, len2); +} diff --git a/sdk-modifications/libsrc/zlib/compress.c b/sdk-modifications/libsrc/zlib/compress.c new file mode 100644 index 0000000..ea4dfbe --- /dev/null +++ b/sdk-modifications/libsrc/zlib/compress.c @@ -0,0 +1,80 @@ +/* compress.c -- compress a memory buffer + * Copyright (C) 1995-2005 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#define ZLIB_INTERNAL +#include "zlib.h" + +/* =========================================================================== + Compresses the source buffer into the destination buffer. The level + parameter has the same meaning as in deflateInit. sourceLen is the byte + length of the source buffer. Upon entry, destLen is the total size of the + destination buffer, which must be at least 0.1% larger than sourceLen plus + 12 bytes. Upon exit, destLen is the actual size of the compressed buffer. + + compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_BUF_ERROR if there was not enough room in the output buffer, + Z_STREAM_ERROR if the level parameter is invalid. +*/ +int ZEXPORT compress2 (dest, destLen, source, sourceLen, level) + Bytef *dest; + uLongf *destLen; + const Bytef *source; + uLong sourceLen; + int level; +{ + z_stream stream; + int err; + + stream.next_in = (Bytef*)source; + stream.avail_in = (uInt)sourceLen; +#ifdef MAXSEG_64K + /* Check for source > 64K on 16-bit machine: */ + if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; +#endif + stream.next_out = dest; + stream.avail_out = (uInt)*destLen; + if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; + + stream.zalloc = (alloc_func)0; + stream.zfree = (free_func)0; + stream.opaque = (voidpf)0; + + err = deflateInit(&stream, level); + if (err != Z_OK) return err; + + err = deflate(&stream, Z_FINISH); + if (err != Z_STREAM_END) { + deflateEnd(&stream); + return err == Z_OK ? Z_BUF_ERROR : err; + } + *destLen = stream.total_out; + + err = deflateEnd(&stream); + return err; +} + +/* =========================================================================== + */ +int ZEXPORT compress (dest, destLen, source, sourceLen) + Bytef *dest; + uLongf *destLen; + const Bytef *source; + uLong sourceLen; +{ + return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION); +} + +/* =========================================================================== + If the default memLevel or windowBits for deflateInit() is changed, then + this function needs to be updated. + */ +uLong ZEXPORT compressBound (sourceLen) + uLong sourceLen; +{ + return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + + (sourceLen >> 25) + 13; +} diff --git a/sdk-modifications/libsrc/zlib/crc32.c b/sdk-modifications/libsrc/zlib/crc32.c new file mode 100644 index 0000000..c12471e --- /dev/null +++ b/sdk-modifications/libsrc/zlib/crc32.c @@ -0,0 +1,447 @@ +/* crc32.c -- compute the CRC-32 of a data stream + * Copyright (C) 1995-2006, 2010, 2011 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + * + * Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster + * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing + * tables for updating the shift register in one step with three exclusive-ors + * instead of four steps with four exclusive-ors. This results in about a + * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3. + */ + +/* @(#) $Id$ */ + +/* + Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore + protection on the static variables used to control the first-use generation + of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should + first call get_crc_table() to initialize the tables before allowing more than + one thread to use crc32(). + + DYNAMIC_CRC_TABLE and MAKECRCH can be #defined to write out crc32.h. + */ + +#ifdef MAKECRCH +# include <stdio.h> +# ifndef DYNAMIC_CRC_TABLE +# define DYNAMIC_CRC_TABLE +# endif /* !DYNAMIC_CRC_TABLE */ +#endif /* MAKECRCH */ + +#include "zutil.h" /* for STDC and FAR definitions */ + +#define local static + +/* Find a four-byte integer type for crc32_little() and crc32_big(). */ +#ifndef NOBYFOUR +# ifdef STDC /* need ANSI C limits.h to determine sizes */ +# include <limits.h> +# define BYFOUR +# if (UINT_MAX == 0xffffffffUL) + typedef unsigned int u4; +# else +# if (ULONG_MAX == 0xffffffffUL) + typedef unsigned long u4; +# else +# if (USHRT_MAX == 0xffffffffUL) + typedef unsigned short u4; +# else +# undef BYFOUR /* can't find a four-byte integer type! */ +# endif +# endif +# endif +# endif /* STDC */ +#endif /* !NOBYFOUR */ + +/* Definitions for doing the crc four data bytes at a time. */ +#ifdef BYFOUR + typedef u4 crc_table_t; +# define REV(w) ((((w)>>24)&0xff)+(((w)>>8)&0xff00)+ \ + (((w)&0xff00)<<8)+(((w)&0xff)<<24)) + local unsigned long crc32_little OF((unsigned long, + const unsigned char FAR *, unsigned)); + local unsigned long crc32_big OF((unsigned long, + const unsigned char FAR *, unsigned)); +# define TBLS 8 +#else + typedef unsigned long crc_table_t; +# define TBLS 1 +#endif /* BYFOUR */ + +/* Local functions for crc concatenation */ +local unsigned long gf2_matrix_times OF((unsigned long *mat, + unsigned long vec)); +local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat)); +local uLong crc32_combine_ OF((uLong crc1, uLong crc2, z_off64_t len2)); + + +#ifdef DYNAMIC_CRC_TABLE + +local volatile int crc_table_empty = 1; +local crc_table_t FAR crc_table[TBLS][256]; +local void make_crc_table OF((void)); +#ifdef MAKECRCH + local void write_table OF((FILE *, const crc_table_t FAR *)); +#endif /* MAKECRCH */ +/* + Generate tables for a byte-wise 32-bit CRC calculation on the polynomial: + x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1. + + Polynomials over GF(2) are represented in binary, one bit per coefficient, + with the lowest powers in the most significant bit. Then adding polynomials + is just exclusive-or, and multiplying a polynomial by x is a right shift by + one. If we call the above polynomial p, and represent a byte as the + polynomial q, also with the lowest power in the most significant bit (so the + byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p, + where a mod b means the remainder after dividing a by b. + + This calculation is done using the shift-register method of multiplying and + taking the remainder. The register is initialized to zero, and for each + incoming bit, x^32 is added mod p to the register if the bit is a one (where + x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by + x (which is shifting right by one and adding x^32 mod p if the bit shifted + out is a one). We start with the highest power (least significant bit) of + q and repeat for all eight bits of q. + + The first table is simply the CRC of all possible eight bit values. This is + all the information needed to generate CRCs on data a byte at a time for all + combinations of CRC register values and incoming bytes. The remaining tables + allow for word-at-a-time CRC calculation for both big-endian and little- + endian machines, where a word is four bytes. +*/ +local void make_crc_table() +{ + crc_table_t c; + int n, k; + crc_table_t poly; /* polynomial exclusive-or pattern */ + /* terms of polynomial defining this crc (except x^32): */ + static volatile int first = 1; /* flag to limit concurrent making */ + static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26}; + + /* See if another task is already doing this (not thread-safe, but better + than nothing -- significantly reduces duration of vulnerability in + case the advice about DYNAMIC_CRC_TABLE is ignored) */ + if (first) { + first = 0; + + /* make exclusive-or pattern from polynomial (0xedb88320UL) */ + poly = 0; + for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++) + poly |= (crc_table_t)1 << (31 - p[n]); + + /* generate a crc for every 8-bit value */ + for (n = 0; n < 256; n++) { + c = (crc_table_t)n; + for (k = 0; k < 8; k++) + c = c & 1 ? poly ^ (c >> 1) : c >> 1; + crc_table[0][n] = c; + } + +#ifdef BYFOUR + /* generate crc for each value followed by one, two, and three zeros, + and then the byte reversal of those as well as the first table */ + for (n = 0; n < 256; n++) { + c = crc_table[0][n]; + crc_table[4][n] = REV(c); + for (k = 1; k < 4; k++) { + c = crc_table[0][c & 0xff] ^ (c >> 8); + crc_table[k][n] = c; + crc_table[k + 4][n] = REV(c); + } + } +#endif /* BYFOUR */ + + crc_table_empty = 0; + } + else { /* not first */ + /* wait for the other guy to finish (not efficient, but rare) */ + while (crc_table_empty) + ; + } + +#ifdef MAKECRCH + /* write out CRC tables to crc32.h */ + { + FILE *out; + + out = fopen("crc32.h", "w"); + if (out == NULL) return; + fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n"); + fprintf(out, " * Generated automatically by crc32.c\n */\n\n"); + fprintf(out, "local const crc_table_t FAR "); + fprintf(out, "crc_table[TBLS][256] =\n{\n {\n"); + write_table(out, crc_table[0]); +# ifdef BYFOUR + fprintf(out, "#ifdef BYFOUR\n"); + for (k = 1; k < 8; k++) { + fprintf(out, " },\n {\n"); + write_table(out, crc_table[k]); + } + fprintf(out, "#endif\n"); +# endif /* BYFOUR */ + fprintf(out, " }\n};\n"); + fclose(out); + } +#endif /* MAKECRCH */ +} + +#ifdef MAKECRCH +local void write_table(out, table) + FILE *out; + const crc_table_t FAR *table; +{ + int n; + + for (n = 0; n < 256; n++) + fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ", + (unsigned long)(table[n]), + n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", ")); +} +#endif /* MAKECRCH */ + +#else /* !DYNAMIC_CRC_TABLE */ +/* ======================================================================== + * Tables of CRC-32s of all single-byte values, made by make_crc_table(). + */ +#include "crc32.h" +#endif /* DYNAMIC_CRC_TABLE */ + +/* ========================================================================= + * This function can be used by asm versions of crc32() + */ +const unsigned long FAR * ZEXPORT get_crc_table() +{ +#ifdef DYNAMIC_CRC_TABLE + if (crc_table_empty) + make_crc_table(); +#endif /* DYNAMIC_CRC_TABLE */ + return (const unsigned long FAR *)crc_table; +} + +/* ========================================================================= */ +#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8) +#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1 + +/* ========================================================================= */ +unsigned long ZEXPORT crc32(crc, buf, len) + unsigned long crc; + const unsigned char FAR *buf; + uInt len; +{ + if (buf == Z_NULL) return 0UL; + +#ifdef DYNAMIC_CRC_TABLE + if (crc_table_empty) + make_crc_table(); +#endif /* DYNAMIC_CRC_TABLE */ + +#ifdef BYFOUR + if (sizeof(void *) == sizeof(ptrdiff_t)) { + u4 endian; + + endian = 1; + if (*((unsigned char *)(&endian))) + return crc32_little(crc, buf, len); + else + return crc32_big(crc, buf, len); + } +#endif /* BYFOUR */ + crc = crc ^ 0xffffffffUL; + while (len >= 8) { + DO8; + len -= 8; + } + if (len) do { + DO1; + } while (--len); + return crc ^ 0xffffffffUL; +} + +#ifdef BYFOUR + +/* ========================================================================= */ +#define DOLIT4 c ^= *buf4++; \ + c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \ + crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24] +#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4 + +/* ========================================================================= */ +local unsigned long crc32_little(crc, buf, len) + unsigned long crc; + const unsigned char FAR *buf; + unsigned len; +{ + register u4 c; + register const u4 FAR *buf4; + + c = (u4)crc; + c = ~c; + while (len && ((ptrdiff_t)buf & 3)) { + c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); + len--; + } + + buf4 = (const u4 FAR *)(const void FAR *)buf; + while (len >= 32) { + DOLIT32; + len -= 32; + } + while (len >= 4) { + DOLIT4; + len -= 4; + } + buf = (const unsigned char FAR *)buf4; + + if (len) do { + c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8); + } while (--len); + c = ~c; + return (unsigned long)c; +} + +/* ========================================================================= */ +#define DOBIG4 c ^= *++buf4; \ + c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \ + crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24] +#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4 + +/* ========================================================================= */ +local unsigned long crc32_big(crc, buf, len) + unsigned long crc; + const unsigned char FAR *buf; + unsigned len; +{ + register u4 c; + register const u4 FAR *buf4; + + c = REV((u4)crc); + c = ~c; + while (len && ((ptrdiff_t)buf & 3)) { + c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); + len--; + } + + buf4 = (const u4 FAR *)(const void FAR *)buf; + buf4--; + while (len >= 32) { + DOBIG32; + len -= 32; + } + while (len >= 4) { + DOBIG4; + len -= 4; + } + buf4++; + buf = (const unsigned char FAR *)buf4; + + if (len) do { + c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8); + } while (--len); + c = ~c; + return (unsigned long)(REV(c)); +} + +#endif /* BYFOUR */ + +#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */ + +/* ========================================================================= */ +local unsigned long gf2_matrix_times(mat, vec) + unsigned long *mat; + unsigned long vec; +{ + unsigned long sum; + + sum = 0; + while (vec) { + if (vec & 1) + sum ^= *mat; + vec >>= 1; + mat++; + } + return sum; +} + +/* ========================================================================= */ +local void gf2_matrix_square(square, mat) + unsigned long *square; + unsigned long *mat; +{ + int n; + + for (n = 0; n < GF2_DIM; n++) + square[n] = gf2_matrix_times(mat, mat[n]); +} + +/* ========================================================================= */ +local uLong crc32_combine_(crc1, crc2, len2) + uLong crc1; + uLong crc2; + z_off64_t len2; +{ + int n; + unsigned long row; + unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */ + unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */ + + /* degenerate case (also disallow negative lengths) */ + if (len2 <= 0) + return crc1; + + /* put operator for one zero bit in odd */ + odd[0] = 0xedb88320UL; /* CRC-32 polynomial */ + row = 1; + for (n = 1; n < GF2_DIM; n++) { + odd[n] = row; + row <<= 1; + } + + /* put operator for two zero bits in even */ + gf2_matrix_square(even, odd); + + /* put operator for four zero bits in odd */ + gf2_matrix_square(odd, even); + + /* apply len2 zeros to crc1 (first square will put the operator for one + zero byte, eight zero bits, in even) */ + do { + /* apply zeros operator for this bit of len2 */ + gf2_matrix_square(even, odd); + if (len2 & 1) + crc1 = gf2_matrix_times(even, crc1); + len2 >>= 1; + + /* if no more bits set, then done */ + if (len2 == 0) + break; + + /* another iteration of the loop with odd and even swapped */ + gf2_matrix_square(odd, even); + if (len2 & 1) + crc1 = gf2_matrix_times(odd, crc1); + len2 >>= 1; + + /* if no more bits set, then done */ + } while (len2 != 0); + + /* return combined crc */ + crc1 ^= crc2; + return crc1; +} + +/* ========================================================================= */ +uLong ZEXPORT crc32_combine(crc1, crc2, len2) + uLong crc1; + uLong crc2; + z_off_t len2; +{ + return crc32_combine_(crc1, crc2, len2); +} + +uLong ZEXPORT crc32_combine64(crc1, crc2, len2) + uLong crc1; + uLong crc2; + z_off64_t len2; +{ + return crc32_combine_(crc1, crc2, len2); +} diff --git a/sdk-modifications/libsrc/zlib/crc32.h b/sdk-modifications/libsrc/zlib/crc32.h new file mode 100644 index 0000000..c3e7171 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/crc32.h @@ -0,0 +1,441 @@ +/* crc32.h -- tables for rapid CRC calculation + * Generated automatically by crc32.c + */ + +local const crc_table_t FAR crc_table[TBLS][256] = +{ + { + 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL, + 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL, + 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL, + 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL, + 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL, + 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL, + 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL, + 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL, + 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL, + 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL, + 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL, + 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL, + 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL, + 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL, + 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL, + 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL, + 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL, + 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL, + 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL, + 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL, + 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL, + 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL, + 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL, + 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL, + 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL, + 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL, + 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL, + 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL, + 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL, + 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL, + 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL, + 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL, + 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL, + 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL, + 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL, + 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL, + 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL, + 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL, + 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL, + 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL, + 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL, + 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL, + 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL, + 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL, + 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL, + 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL, + 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL, + 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL, + 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL, + 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL, + 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL, + 0x2d02ef8dUL +#ifdef BYFOUR + }, + { + 0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL, + 0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL, + 0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL, + 0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL, + 0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL, + 0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL, + 0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL, + 0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL, + 0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL, + 0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL, + 0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL, + 0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL, + 0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL, + 0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL, + 0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL, + 0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL, + 0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL, + 0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL, + 0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL, + 0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL, + 0x0191aea3UL, 0x188a9fe2UL, 0x33a7cc21UL, 0x2abcfd60UL, 0xad24e1afUL, + 0xb43fd0eeUL, 0x9f12832dUL, 0x8609b26cUL, 0xc94824abUL, 0xd05315eaUL, + 0xfb7e4629UL, 0xe2657768UL, 0x2f3f79f6UL, 0x362448b7UL, 0x1d091b74UL, + 0x04122a35UL, 0x4b53bcf2UL, 0x52488db3UL, 0x7965de70UL, 0x607eef31UL, + 0xe7e6f3feUL, 0xfefdc2bfUL, 0xd5d0917cUL, 0xcccba03dUL, 0x838a36faUL, + 0x9a9107bbUL, 0xb1bc5478UL, 0xa8a76539UL, 0x3b83984bUL, 0x2298a90aUL, + 0x09b5fac9UL, 0x10aecb88UL, 0x5fef5d4fUL, 0x46f46c0eUL, 0x6dd93fcdUL, + 0x74c20e8cUL, 0xf35a1243UL, 0xea412302UL, 0xc16c70c1UL, 0xd8774180UL, + 0x9736d747UL, 0x8e2de606UL, 0xa500b5c5UL, 0xbc1b8484UL, 0x71418a1aUL, + 0x685abb5bUL, 0x4377e898UL, 0x5a6cd9d9UL, 0x152d4f1eUL, 0x0c367e5fUL, + 0x271b2d9cUL, 0x3e001cddUL, 0xb9980012UL, 0xa0833153UL, 0x8bae6290UL, + 0x92b553d1UL, 0xddf4c516UL, 0xc4eff457UL, 0xefc2a794UL, 0xf6d996d5UL, + 0xae07bce9UL, 0xb71c8da8UL, 0x9c31de6bUL, 0x852aef2aUL, 0xca6b79edUL, + 0xd37048acUL, 0xf85d1b6fUL, 0xe1462a2eUL, 0x66de36e1UL, 0x7fc507a0UL, + 0x54e85463UL, 0x4df36522UL, 0x02b2f3e5UL, 0x1ba9c2a4UL, 0x30849167UL, + 0x299fa026UL, 0xe4c5aeb8UL, 0xfdde9ff9UL, 0xd6f3cc3aUL, 0xcfe8fd7bUL, + 0x80a96bbcUL, 0x99b25afdUL, 0xb29f093eUL, 0xab84387fUL, 0x2c1c24b0UL, + 0x350715f1UL, 0x1e2a4632UL, 0x07317773UL, 0x4870e1b4UL, 0x516bd0f5UL, + 0x7a468336UL, 0x635db277UL, 0xcbfad74eUL, 0xd2e1e60fUL, 0xf9ccb5ccUL, + 0xe0d7848dUL, 0xaf96124aUL, 0xb68d230bUL, 0x9da070c8UL, 0x84bb4189UL, + 0x03235d46UL, 0x1a386c07UL, 0x31153fc4UL, 0x280e0e85UL, 0x674f9842UL, + 0x7e54a903UL, 0x5579fac0UL, 0x4c62cb81UL, 0x8138c51fUL, 0x9823f45eUL, + 0xb30ea79dUL, 0xaa1596dcUL, 0xe554001bUL, 0xfc4f315aUL, 0xd7626299UL, + 0xce7953d8UL, 0x49e14f17UL, 0x50fa7e56UL, 0x7bd72d95UL, 0x62cc1cd4UL, + 0x2d8d8a13UL, 0x3496bb52UL, 0x1fbbe891UL, 0x06a0d9d0UL, 0x5e7ef3ecUL, + 0x4765c2adUL, 0x6c48916eUL, 0x7553a02fUL, 0x3a1236e8UL, 0x230907a9UL, + 0x0824546aUL, 0x113f652bUL, 0x96a779e4UL, 0x8fbc48a5UL, 0xa4911b66UL, + 0xbd8a2a27UL, 0xf2cbbce0UL, 0xebd08da1UL, 0xc0fdde62UL, 0xd9e6ef23UL, + 0x14bce1bdUL, 0x0da7d0fcUL, 0x268a833fUL, 0x3f91b27eUL, 0x70d024b9UL, + 0x69cb15f8UL, 0x42e6463bUL, 0x5bfd777aUL, 0xdc656bb5UL, 0xc57e5af4UL, + 0xee530937UL, 0xf7483876UL, 0xb809aeb1UL, 0xa1129ff0UL, 0x8a3fcc33UL, + 0x9324fd72UL + }, + { + 0x00000000UL, 0x01c26a37UL, 0x0384d46eUL, 0x0246be59UL, 0x0709a8dcUL, + 0x06cbc2ebUL, 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0x6e511c8eUL, + 0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL, + 0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL, + 0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL, + 0xf10605deUL +#endif + } +}; diff --git a/sdk-modifications/libsrc/zlib/deflate.c b/sdk-modifications/libsrc/zlib/deflate.c new file mode 100644 index 0000000..8bd480e --- /dev/null +++ b/sdk-modifications/libsrc/zlib/deflate.c @@ -0,0 +1,1965 @@ +/* deflate.c -- compress data using the deflation algorithm + * Copyright (C) 1995-2012 Jean-loup Gailly and Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* + * ALGORITHM + * + * The "deflation" process depends on being able to identify portions + * of the input text which are identical to earlier input (within a + * sliding window trailing behind the input currently being processed). + * + * The most straightforward technique turns out to be the fastest for + * most input files: try all possible matches and select the longest. + * The key feature of this algorithm is that insertions into the string + * dictionary are very simple and thus fast, and deletions are avoided + * completely. Insertions are performed at each input character, whereas + * string matches are performed only when the previous match ends. So it + * is preferable to spend more time in matches to allow very fast string + * insertions and avoid deletions. The matching algorithm for small + * strings is inspired from that of Rabin & Karp. A brute force approach + * is used to find longer strings when a small match has been found. + * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze + * (by Leonid Broukhis). + * A previous version of this file used a more sophisticated algorithm + * (by Fiala and Greene) which is guaranteed to run in linear amortized + * time, but has a larger average cost, uses more memory and is patented. + * However the F&G algorithm may be faster for some highly redundant + * files if the parameter max_chain_length (described below) is too large. + * + * ACKNOWLEDGEMENTS + * + * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and + * I found it in 'freeze' written by Leonid Broukhis. + * Thanks to many people for bug reports and testing. + * + * REFERENCES + * + * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification". + * Available in http://tools.ietf.org/html/rfc1951 + * + * A description of the Rabin and Karp algorithm is given in the book + * "Algorithms" by R. Sedgewick, Addison-Wesley, p252. + * + * Fiala,E.R., and Greene,D.H. + * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595 + * + */ + +/* @(#) $Id$ */ + +#include "deflate.h" + +const char deflate_copyright[] = + " deflate 1.2.6 Copyright 1995-2012 Jean-loup Gailly and Mark Adler "; +/* + If you use the zlib library in a product, an acknowledgment is welcome + in the documentation of your product. If for some reason you cannot + include such an acknowledgment, I would appreciate that you keep this + copyright string in the executable of your product. + */ + +/* =========================================================================== + * Function prototypes. + */ +typedef enum { + need_more, /* block not completed, need more input or more output */ + block_done, /* block flush performed */ + finish_started, /* finish started, need only more output at next deflate */ + finish_done /* finish done, accept no more input or output */ +} block_state; + +typedef block_state (*compress_func) OF((deflate_state *s, int flush)); +/* Compression function. Returns the block state after the call. */ + +local void fill_window OF((deflate_state *s)); +local block_state deflate_stored OF((deflate_state *s, int flush)); +local block_state deflate_fast OF((deflate_state *s, int flush)); +#ifndef FASTEST +local block_state deflate_slow OF((deflate_state *s, int flush)); +#endif +local block_state deflate_rle OF((deflate_state *s, int flush)); +local block_state deflate_huff OF((deflate_state *s, int flush)); +local void lm_init OF((deflate_state *s)); +local void putShortMSB OF((deflate_state *s, uInt b)); +local void flush_pending OF((z_streamp strm)); +local int read_buf OF((z_streamp strm, Bytef *buf, unsigned size)); +#ifdef ASMV + void match_init OF((void)); /* asm code initialization */ + uInt longest_match OF((deflate_state *s, IPos cur_match)); +#else +local uInt longest_match OF((deflate_state *s, IPos cur_match)); +#endif + +#ifdef DEBUG +local void check_match OF((deflate_state *s, IPos start, IPos match, + int length)); +#endif + +/* =========================================================================== + * Local data + */ + +#define NIL 0 +/* Tail of hash chains */ + +#ifndef TOO_FAR +# define TOO_FAR 4096 +#endif +/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */ + +/* Values for max_lazy_match, good_match and max_chain_length, depending on + * the desired pack level (0..9). The values given below have been tuned to + * exclude worst case performance for pathological files. Better values may be + * found for specific files. + */ +typedef struct config_s { + ush good_length; /* reduce lazy search above this match length */ + ush max_lazy; /* do not perform lazy search above this match length */ + ush nice_length; /* quit search above this match length */ + ush max_chain; + compress_func func; +} config; + +#ifdef FASTEST +local const config configuration_table[2] = { +/* good lazy nice chain */ +/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */ +/* 1 */ {4, 4, 8, 4, deflate_fast}}; /* max speed, no lazy matches */ +#else +local const config configuration_table[10] = { +/* good lazy nice chain */ +/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */ +/* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */ +/* 2 */ {4, 5, 16, 8, deflate_fast}, +/* 3 */ {4, 6, 32, 32, deflate_fast}, + +/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */ +/* 5 */ {8, 16, 32, 32, deflate_slow}, +/* 6 */ {8, 16, 128, 128, deflate_slow}, +/* 7 */ {8, 32, 128, 256, deflate_slow}, +/* 8 */ {32, 128, 258, 1024, deflate_slow}, +/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */ +#endif + +/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4 + * For deflate_fast() (levels <= 3) good is ignored and lazy has a different + * meaning. + */ + +#define EQUAL 0 +/* result of memcmp for equal strings */ + +#ifndef NO_DUMMY_DECL +struct static_tree_desc_s {int dummy;}; /* for buggy compilers */ +#endif + +/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */ +#define RANK(f) (((f) << 1) - ((f) > 4 ? 9 : 0)) + +/* =========================================================================== + * Update a hash value with the given input byte + * IN assertion: all calls to to UPDATE_HASH are made with consecutive + * input characters, so that a running hash key can be computed from the + * previous key instead of complete recalculation each time. + */ +#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask) + + +/* =========================================================================== + * Insert string str in the dictionary and set match_head to the previous head + * of the hash chain (the most recent string with same hash key). Return + * the previous length of the hash chain. + * If this file is compiled with -DFASTEST, the compression level is forced + * to 1, and no hash chains are maintained. + * IN assertion: all calls to to INSERT_STRING are made with consecutive + * input characters and the first MIN_MATCH bytes of str are valid + * (except for the last MIN_MATCH-1 bytes of the input file). + */ +#ifdef FASTEST +#define INSERT_STRING(s, str, match_head) \ + (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ + match_head = s->head[s->ins_h], \ + s->head[s->ins_h] = (Pos)(str)) +#else +#define INSERT_STRING(s, str, match_head) \ + (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \ + match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \ + s->head[s->ins_h] = (Pos)(str)) +#endif + +/* =========================================================================== + * Initialize the hash table (avoiding 64K overflow for 16 bit systems). + * prev[] will be initialized on the fly. + */ +#define CLEAR_HASH(s) \ + s->head[s->hash_size-1] = NIL; \ + zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head)); + +/* ========================================================================= */ +int ZEXPORT deflateInit_(strm, level, version, stream_size) + z_streamp strm; + int level; + const char *version; + int stream_size; +{ + return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, + Z_DEFAULT_STRATEGY, version, stream_size); + /* To do: ignore strm->next_in if we use it as window */ +} + +/* ========================================================================= */ +int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy, + version, stream_size) + z_streamp strm; + int level; + int method; + int windowBits; + int memLevel; + int strategy; + const char *version; + int stream_size; +{ + deflate_state *s; + int wrap = 1; + static const char my_version[] = ZLIB_VERSION; + + ushf *overlay; + /* We overlay pending_buf and d_buf+l_buf. This works since the average + * output size for (length,distance) codes is <= 24 bits. + */ + + if (version == Z_NULL || version[0] != my_version[0] || + stream_size != sizeof(z_stream)) { + return Z_VERSION_ERROR; + } + if (strm == Z_NULL) return Z_STREAM_ERROR; + + strm->msg = Z_NULL; + if (strm->zalloc == (alloc_func)0) { +#ifdef Z_SOLO + return Z_STREAM_ERROR; +#else + strm->zalloc = zcalloc; + strm->opaque = (voidpf)0; +#endif + } + if (strm->zfree == (free_func)0) +#ifdef Z_SOLO + return Z_STREAM_ERROR; +#else + strm->zfree = zcfree; +#endif + +#ifdef FASTEST + if (level != 0) level = 1; +#else + if (level == Z_DEFAULT_COMPRESSION) level = 6; +#endif + + if (windowBits < 0) { /* suppress zlib wrapper */ + wrap = 0; + windowBits = -windowBits; + } +#ifdef GZIP + else if (windowBits > 15) { + wrap = 2; /* write gzip wrapper instead */ + windowBits -= 16; + } +#endif + if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED || + windowBits < 8 || windowBits > 15 || level < 0 || level > 9 || + strategy < 0 || strategy > Z_FIXED) { + return Z_STREAM_ERROR; + } + if (windowBits == 8) windowBits = 9; /* until 256-byte window bug fixed */ + s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state)); + if (s == Z_NULL) return Z_MEM_ERROR; + strm->state = (struct internal_state FAR *)s; + s->strm = strm; + + s->wrap = wrap; + s->gzhead = Z_NULL; + s->w_bits = windowBits; + s->w_size = 1 << s->w_bits; + s->w_mask = s->w_size - 1; + + s->hash_bits = memLevel + 7; + s->hash_size = 1 << s->hash_bits; + s->hash_mask = s->hash_size - 1; + s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH); + + s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte)); + s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos)); + s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos)); + + s->high_water = 0; /* nothing written to s->window yet */ + + s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */ + + overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2); + s->pending_buf = (uchf *) overlay; + s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L); + + if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL || + s->pending_buf == Z_NULL) { + s->status = FINISH_STATE; + strm->msg = (char*)ERR_MSG(Z_MEM_ERROR); + deflateEnd (strm); + return Z_MEM_ERROR; + } + s->d_buf = overlay + s->lit_bufsize/sizeof(ush); + s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize; + + s->level = level; + s->strategy = strategy; + s->method = (Byte)method; + + return deflateReset(strm); +} + +/* ========================================================================= */ +int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength) + z_streamp strm; + const Bytef *dictionary; + uInt dictLength; +{ + deflate_state *s; + uInt str, n; + int wrap; + unsigned avail; + unsigned char *next; + + if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL) + return Z_STREAM_ERROR; + s = strm->state; + wrap = s->wrap; + if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead) + return Z_STREAM_ERROR; + + /* when using zlib wrappers, compute Adler-32 for provided dictionary */ + if (wrap == 1) + strm->adler = adler32(strm->adler, dictionary, dictLength); + s->wrap = 0; /* avoid computing Adler-32 in read_buf */ + + /* if dictionary would fill window, just replace the history */ + if (dictLength >= s->w_size) { + if (wrap == 0) { /* already empty otherwise */ + CLEAR_HASH(s); + s->strstart = 0; + s->block_start = 0L; + s->insert = 0; + } + dictionary += dictLength - s->w_size; /* use the tail */ + dictLength = s->w_size; + } + + /* insert dictionary into window and hash */ + avail = strm->avail_in; + next = strm->next_in; + strm->avail_in = dictLength; + strm->next_in = (Bytef *)dictionary; + fill_window(s); + while (s->lookahead >= MIN_MATCH) { + str = s->strstart; + n = s->lookahead - (MIN_MATCH-1); + do { + UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); +#ifndef FASTEST + s->prev[str & s->w_mask] = s->head[s->ins_h]; +#endif + s->head[s->ins_h] = (Pos)str; + str++; + } while (--n); + s->strstart = str; + s->lookahead = MIN_MATCH-1; + fill_window(s); + } + s->strstart += s->lookahead; + s->block_start = (long)s->strstart; + s->insert = s->lookahead; + s->lookahead = 0; + s->match_length = s->prev_length = MIN_MATCH-1; + s->match_available = 0; + strm->next_in = next; + strm->avail_in = avail; + s->wrap = wrap; + return Z_OK; +} + +/* ========================================================================= */ +int ZEXPORT deflateResetKeep (strm) + z_streamp strm; +{ + deflate_state *s; + + if (strm == Z_NULL || strm->state == Z_NULL || + strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) { + return Z_STREAM_ERROR; + } + + strm->total_in = strm->total_out = 0; + strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */ + strm->data_type = Z_UNKNOWN; + + s = (deflate_state *)strm->state; + s->pending = 0; + s->pending_out = s->pending_buf; + + if (s->wrap < 0) { + s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */ + } + s->status = s->wrap ? INIT_STATE : BUSY_STATE; + strm->adler = +#ifdef GZIP + s->wrap == 2 ? crc32(0L, Z_NULL, 0) : +#endif + adler32(0L, Z_NULL, 0); + s->last_flush = Z_NO_FLUSH; + + _tr_init(s); + + return Z_OK; +} + +/* ========================================================================= */ +int ZEXPORT deflateReset (strm) + z_streamp strm; +{ + int ret; + + ret = deflateResetKeep(strm); + if (ret == Z_OK) + lm_init(strm->state); + return ret; +} + +/* ========================================================================= */ +int ZEXPORT deflateSetHeader (strm, head) + z_streamp strm; + gz_headerp head; +{ + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + if (strm->state->wrap != 2) return Z_STREAM_ERROR; + strm->state->gzhead = head; + return Z_OK; +} + +/* ========================================================================= */ +int ZEXPORT deflatePending (strm, pending, bits) + unsigned *pending; + int *bits; + z_streamp strm; +{ + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + if (pending != Z_NULL) + *pending = strm->state->pending; + if (bits != Z_NULL) + *bits = strm->state->bi_valid; + return Z_OK; +} + +/* ========================================================================= */ +int ZEXPORT deflatePrime (strm, bits, value) + z_streamp strm; + int bits; + int value; +{ + deflate_state *s; + int put; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + s = strm->state; + if ((Bytef *)(s->d_buf) < s->pending_out + ((Buf_size + 7) >> 3)) + return Z_BUF_ERROR; + do { + put = Buf_size - s->bi_valid; + if (put > bits) + put = bits; + s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid); + s->bi_valid += put; + _tr_flush_bits(s); + value >>= put; + bits -= put; + } while (bits); + return Z_OK; +} + +/* ========================================================================= */ +int ZEXPORT deflateParams(strm, level, strategy) + z_streamp strm; + int level; + int strategy; +{ + deflate_state *s; + compress_func func; + int err = Z_OK; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + s = strm->state; + +#ifdef FASTEST + if (level != 0) level = 1; +#else + if (level == Z_DEFAULT_COMPRESSION) level = 6; +#endif + if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) { + return Z_STREAM_ERROR; + } + func = configuration_table[s->level].func; + + if ((strategy != s->strategy || func != configuration_table[level].func) && + strm->total_in != 0) { + /* Flush the last buffer: */ + err = deflate(strm, Z_BLOCK); + } + if (s->level != level) { + s->level = level; + s->max_lazy_match = configuration_table[level].max_lazy; + s->good_match = configuration_table[level].good_length; + s->nice_match = configuration_table[level].nice_length; + s->max_chain_length = configuration_table[level].max_chain; + } + s->strategy = strategy; + return err; +} + +/* ========================================================================= */ +int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain) + z_streamp strm; + int good_length; + int max_lazy; + int nice_length; + int max_chain; +{ + deflate_state *s; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + s = strm->state; + s->good_match = good_length; + s->max_lazy_match = max_lazy; + s->nice_match = nice_length; + s->max_chain_length = max_chain; + return Z_OK; +} + +/* ========================================================================= + * For the default windowBits of 15 and memLevel of 8, this function returns + * a close to exact, as well as small, upper bound on the compressed size. + * They are coded as constants here for a reason--if the #define's are + * changed, then this function needs to be changed as well. The return + * value for 15 and 8 only works for those exact settings. + * + * For any setting other than those defaults for windowBits and memLevel, + * the value returned is a conservative worst case for the maximum expansion + * resulting from using fixed blocks instead of stored blocks, which deflate + * can emit on compressed data for some combinations of the parameters. + * + * This function could be more sophisticated to provide closer upper bounds for + * every combination of windowBits and memLevel. But even the conservative + * upper bound of about 14% expansion does not seem onerous for output buffer + * allocation. + */ +uLong ZEXPORT deflateBound(strm, sourceLen) + z_streamp strm; + uLong sourceLen; +{ + deflate_state *s; + uLong complen, wraplen; + Bytef *str; + + /* conservative upper bound for compressed data */ + complen = sourceLen + + ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5; + + /* if can't get parameters, return conservative bound plus zlib wrapper */ + if (strm == Z_NULL || strm->state == Z_NULL) + return complen + 6; + + /* compute wrapper length */ + s = strm->state; + switch (s->wrap) { + case 0: /* raw deflate */ + wraplen = 0; + break; + case 1: /* zlib wrapper */ + wraplen = 6 + (s->strstart ? 4 : 0); + break; + case 2: /* gzip wrapper */ + wraplen = 18; + if (s->gzhead != Z_NULL) { /* user-supplied gzip header */ + if (s->gzhead->extra != Z_NULL) + wraplen += 2 + s->gzhead->extra_len; + str = s->gzhead->name; + if (str != Z_NULL) + do { + wraplen++; + } while (*str++); + str = s->gzhead->comment; + if (str != Z_NULL) + do { + wraplen++; + } while (*str++); + if (s->gzhead->hcrc) + wraplen += 2; + } + break; + default: /* for compiler happiness */ + wraplen = 6; + } + + /* if not default parameters, return conservative bound */ + if (s->w_bits != 15 || s->hash_bits != 8 + 7) + return complen + wraplen; + + /* default settings: return tight bound for that case */ + return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) + + (sourceLen >> 25) + 13 - 6 + wraplen; +} + +/* ========================================================================= + * Put a short in the pending buffer. The 16-bit value is put in MSB order. + * IN assertion: the stream state is correct and there is enough room in + * pending_buf. + */ +local void putShortMSB (s, b) + deflate_state *s; + uInt b; +{ + put_byte(s, (Byte)(b >> 8)); + put_byte(s, (Byte)(b & 0xff)); +} + +/* ========================================================================= + * Flush as much pending output as possible. All deflate() output goes + * through this function so some applications may wish to modify it + * to avoid allocating a large strm->next_out buffer and copying into it. + * (See also read_buf()). + */ +local void flush_pending(strm) + z_streamp strm; +{ + unsigned len; + deflate_state *s = strm->state; + + _tr_flush_bits(s); + len = s->pending; + if (len > strm->avail_out) len = strm->avail_out; + if (len == 0) return; + + zmemcpy(strm->next_out, s->pending_out, len); + strm->next_out += len; + s->pending_out += len; + strm->total_out += len; + strm->avail_out -= len; + s->pending -= len; + if (s->pending == 0) { + s->pending_out = s->pending_buf; + } +} + +/* ========================================================================= */ +int ZEXPORT deflate (strm, flush) + z_streamp strm; + int flush; +{ + int old_flush; /* value of flush param for previous deflate call */ + deflate_state *s; + + if (strm == Z_NULL || strm->state == Z_NULL || + flush > Z_BLOCK || flush < 0) { + return Z_STREAM_ERROR; + } + s = strm->state; + + if (strm->next_out == Z_NULL || + (strm->next_in == Z_NULL && strm->avail_in != 0) || + (s->status == FINISH_STATE && flush != Z_FINISH)) { + ERR_RETURN(strm, Z_STREAM_ERROR); + } + if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR); + + s->strm = strm; /* just in case */ + old_flush = s->last_flush; + s->last_flush = flush; + + /* Write the header */ + if (s->status == INIT_STATE) { +#ifdef GZIP + if (s->wrap == 2) { + strm->adler = crc32(0L, Z_NULL, 0); + put_byte(s, 31); + put_byte(s, 139); + put_byte(s, 8); + if (s->gzhead == Z_NULL) { + put_byte(s, 0); + put_byte(s, 0); + put_byte(s, 0); + put_byte(s, 0); + put_byte(s, 0); + put_byte(s, s->level == 9 ? 2 : + (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? + 4 : 0)); + put_byte(s, OS_CODE); + s->status = BUSY_STATE; + } + else { + put_byte(s, (s->gzhead->text ? 1 : 0) + + (s->gzhead->hcrc ? 2 : 0) + + (s->gzhead->extra == Z_NULL ? 0 : 4) + + (s->gzhead->name == Z_NULL ? 0 : 8) + + (s->gzhead->comment == Z_NULL ? 0 : 16) + ); + put_byte(s, (Byte)(s->gzhead->time & 0xff)); + put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff)); + put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff)); + put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff)); + put_byte(s, s->level == 9 ? 2 : + (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ? + 4 : 0)); + put_byte(s, s->gzhead->os & 0xff); + if (s->gzhead->extra != Z_NULL) { + put_byte(s, s->gzhead->extra_len & 0xff); + put_byte(s, (s->gzhead->extra_len >> 8) & 0xff); + } + if (s->gzhead->hcrc) + strm->adler = crc32(strm->adler, s->pending_buf, + s->pending); + s->gzindex = 0; + s->status = EXTRA_STATE; + } + } + else +#endif + { + uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8; + uInt level_flags; + + if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2) + level_flags = 0; + else if (s->level < 6) + level_flags = 1; + else if (s->level == 6) + level_flags = 2; + else + level_flags = 3; + header |= (level_flags << 6); + if (s->strstart != 0) header |= PRESET_DICT; + header += 31 - (header % 31); + + s->status = BUSY_STATE; + putShortMSB(s, header); + + /* Save the adler32 of the preset dictionary: */ + if (s->strstart != 0) { + putShortMSB(s, (uInt)(strm->adler >> 16)); + putShortMSB(s, (uInt)(strm->adler & 0xffff)); + } + strm->adler = adler32(0L, Z_NULL, 0); + } + } +#ifdef GZIP + if (s->status == EXTRA_STATE) { + if (s->gzhead->extra != Z_NULL) { + uInt beg = s->pending; /* start of bytes to update crc */ + + while (s->gzindex < (s->gzhead->extra_len & 0xffff)) { + if (s->pending == s->pending_buf_size) { + if (s->gzhead->hcrc && s->pending > beg) + strm->adler = crc32(strm->adler, s->pending_buf + beg, + s->pending - beg); + flush_pending(strm); + beg = s->pending; + if (s->pending == s->pending_buf_size) + break; + } + put_byte(s, s->gzhead->extra[s->gzindex]); + s->gzindex++; + } + if (s->gzhead->hcrc && s->pending > beg) + strm->adler = crc32(strm->adler, s->pending_buf + beg, + s->pending - beg); + if (s->gzindex == s->gzhead->extra_len) { + s->gzindex = 0; + s->status = NAME_STATE; + } + } + else + s->status = NAME_STATE; + } + if (s->status == NAME_STATE) { + if (s->gzhead->name != Z_NULL) { + uInt beg = s->pending; /* start of bytes to update crc */ + int val; + + do { + if (s->pending == s->pending_buf_size) { + if (s->gzhead->hcrc && s->pending > beg) + strm->adler = crc32(strm->adler, s->pending_buf + beg, + s->pending - beg); + flush_pending(strm); + beg = s->pending; + if (s->pending == s->pending_buf_size) { + val = 1; + break; + } + } + val = s->gzhead->name[s->gzindex++]; + put_byte(s, val); + } while (val != 0); + if (s->gzhead->hcrc && s->pending > beg) + strm->adler = crc32(strm->adler, s->pending_buf + beg, + s->pending - beg); + if (val == 0) { + s->gzindex = 0; + s->status = COMMENT_STATE; + } + } + else + s->status = COMMENT_STATE; + } + if (s->status == COMMENT_STATE) { + if (s->gzhead->comment != Z_NULL) { + uInt beg = s->pending; /* start of bytes to update crc */ + int val; + + do { + if (s->pending == s->pending_buf_size) { + if (s->gzhead->hcrc && s->pending > beg) + strm->adler = crc32(strm->adler, s->pending_buf + beg, + s->pending - beg); + flush_pending(strm); + beg = s->pending; + if (s->pending == s->pending_buf_size) { + val = 1; + break; + } + } + val = s->gzhead->comment[s->gzindex++]; + put_byte(s, val); + } while (val != 0); + if (s->gzhead->hcrc && s->pending > beg) + strm->adler = crc32(strm->adler, s->pending_buf + beg, + s->pending - beg); + if (val == 0) + s->status = HCRC_STATE; + } + else + s->status = HCRC_STATE; + } + if (s->status == HCRC_STATE) { + if (s->gzhead->hcrc) { + if (s->pending + 2 > s->pending_buf_size) + flush_pending(strm); + if (s->pending + 2 <= s->pending_buf_size) { + put_byte(s, (Byte)(strm->adler & 0xff)); + put_byte(s, (Byte)((strm->adler >> 8) & 0xff)); + strm->adler = crc32(0L, Z_NULL, 0); + s->status = BUSY_STATE; + } + } + else + s->status = BUSY_STATE; + } +#endif + + /* Flush as much pending output as possible */ + if (s->pending != 0) { + flush_pending(strm); + if (strm->avail_out == 0) { + /* Since avail_out is 0, deflate will be called again with + * more output space, but possibly with both pending and + * avail_in equal to zero. There won't be anything to do, + * but this is not an error situation so make sure we + * return OK instead of BUF_ERROR at next call of deflate: + */ + s->last_flush = -1; + return Z_OK; + } + + /* Make sure there is something to do and avoid duplicate consecutive + * flushes. For repeated and useless calls with Z_FINISH, we keep + * returning Z_STREAM_END instead of Z_BUF_ERROR. + */ + } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) && + flush != Z_FINISH) { + ERR_RETURN(strm, Z_BUF_ERROR); + } + + /* User must not provide more input after the first FINISH: */ + if (s->status == FINISH_STATE && strm->avail_in != 0) { + ERR_RETURN(strm, Z_BUF_ERROR); + } + + /* Start a new block or continue the current one. + */ + if (strm->avail_in != 0 || s->lookahead != 0 || + (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) { + block_state bstate; + + bstate = s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) : + (s->strategy == Z_RLE ? deflate_rle(s, flush) : + (*(configuration_table[s->level].func))(s, flush)); + + if (bstate == finish_started || bstate == finish_done) { + s->status = FINISH_STATE; + } + if (bstate == need_more || bstate == finish_started) { + if (strm->avail_out == 0) { + s->last_flush = -1; /* avoid BUF_ERROR next call, see above */ + } + return Z_OK; + /* If flush != Z_NO_FLUSH && avail_out == 0, the next call + * of deflate should use the same flush parameter to make sure + * that the flush is complete. So we don't have to output an + * empty block here, this will be done at next call. This also + * ensures that for a very small output buffer, we emit at most + * one empty block. + */ + } + if (bstate == block_done) { + if (flush == Z_PARTIAL_FLUSH) { + _tr_align(s); + } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */ + _tr_stored_block(s, (char*)0, 0L, 0); + /* For a full flush, this empty block will be recognized + * as a special marker by inflate_sync(). + */ + if (flush == Z_FULL_FLUSH) { + CLEAR_HASH(s); /* forget history */ + if (s->lookahead == 0) { + s->strstart = 0; + s->block_start = 0L; + s->insert = 0; + } + } + } + flush_pending(strm); + if (strm->avail_out == 0) { + s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */ + return Z_OK; + } + } + } + Assert(strm->avail_out > 0, "bug2"); + + if (flush != Z_FINISH) return Z_OK; + if (s->wrap <= 0) return Z_STREAM_END; + + /* Write the trailer */ +#ifdef GZIP + if (s->wrap == 2) { + put_byte(s, (Byte)(strm->adler & 0xff)); + put_byte(s, (Byte)((strm->adler >> 8) & 0xff)); + put_byte(s, (Byte)((strm->adler >> 16) & 0xff)); + put_byte(s, (Byte)((strm->adler >> 24) & 0xff)); + put_byte(s, (Byte)(strm->total_in & 0xff)); + put_byte(s, (Byte)((strm->total_in >> 8) & 0xff)); + put_byte(s, (Byte)((strm->total_in >> 16) & 0xff)); + put_byte(s, (Byte)((strm->total_in >> 24) & 0xff)); + } + else +#endif + { + putShortMSB(s, (uInt)(strm->adler >> 16)); + putShortMSB(s, (uInt)(strm->adler & 0xffff)); + } + flush_pending(strm); + /* If avail_out is zero, the application will call deflate again + * to flush the rest. + */ + if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */ + return s->pending != 0 ? Z_OK : Z_STREAM_END; +} + +/* ========================================================================= */ +int ZEXPORT deflateEnd (strm) + z_streamp strm; +{ + int status; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + + status = strm->state->status; + if (status != INIT_STATE && + status != EXTRA_STATE && + status != NAME_STATE && + status != COMMENT_STATE && + status != HCRC_STATE && + status != BUSY_STATE && + status != FINISH_STATE) { + return Z_STREAM_ERROR; + } + + /* Deallocate in reverse order of allocations: */ + TRY_FREE(strm, strm->state->pending_buf); + TRY_FREE(strm, strm->state->head); + TRY_FREE(strm, strm->state->prev); + TRY_FREE(strm, strm->state->window); + + ZFREE(strm, strm->state); + strm->state = Z_NULL; + + return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK; +} + +/* ========================================================================= + * Copy the source state to the destination state. + * To simplify the source, this is not supported for 16-bit MSDOS (which + * doesn't have enough memory anyway to duplicate compression states). + */ +int ZEXPORT deflateCopy (dest, source) + z_streamp dest; + z_streamp source; +{ +#ifdef MAXSEG_64K + return Z_STREAM_ERROR; +#else + deflate_state *ds; + deflate_state *ss; + ushf *overlay; + + + if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) { + return Z_STREAM_ERROR; + } + + ss = source->state; + + zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream)); + + ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state)); + if (ds == Z_NULL) return Z_MEM_ERROR; + dest->state = (struct internal_state FAR *) ds; + zmemcpy((voidpf)ds, (voidpf)ss, sizeof(deflate_state)); + ds->strm = dest; + + ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte)); + ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos)); + ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos)); + overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2); + ds->pending_buf = (uchf *) overlay; + + if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL || + ds->pending_buf == Z_NULL) { + deflateEnd (dest); + return Z_MEM_ERROR; + } + /* following zmemcpy do not work for 16-bit MSDOS */ + zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte)); + zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos)); + zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos)); + zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size); + + ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf); + ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush); + ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize; + + ds->l_desc.dyn_tree = ds->dyn_ltree; + ds->d_desc.dyn_tree = ds->dyn_dtree; + ds->bl_desc.dyn_tree = ds->bl_tree; + + return Z_OK; +#endif /* MAXSEG_64K */ +} + +/* =========================================================================== + * Read a new buffer from the current input stream, update the adler32 + * and total number of bytes read. All deflate() input goes through + * this function so some applications may wish to modify it to avoid + * allocating a large strm->next_in buffer and copying from it. + * (See also flush_pending()). + */ +local int read_buf(strm, buf, size) + z_streamp strm; + Bytef *buf; + unsigned size; +{ + unsigned len = strm->avail_in; + + if (len > size) len = size; + if (len == 0) return 0; + + strm->avail_in -= len; + + zmemcpy(buf, strm->next_in, len); + if (strm->state->wrap == 1) { + strm->adler = adler32(strm->adler, buf, len); + } +#ifdef GZIP + else if (strm->state->wrap == 2) { + strm->adler = crc32(strm->adler, buf, len); + } +#endif + strm->next_in += len; + strm->total_in += len; + + return (int)len; +} + +/* =========================================================================== + * Initialize the "longest match" routines for a new zlib stream + */ +local void lm_init (s) + deflate_state *s; +{ + s->window_size = (ulg)2L*s->w_size; + + CLEAR_HASH(s); + + /* Set the default configuration parameters: + */ + s->max_lazy_match = configuration_table[s->level].max_lazy; + s->good_match = configuration_table[s->level].good_length; + s->nice_match = configuration_table[s->level].nice_length; + s->max_chain_length = configuration_table[s->level].max_chain; + + s->strstart = 0; + s->block_start = 0L; + s->lookahead = 0; + s->insert = 0; + s->match_length = s->prev_length = MIN_MATCH-1; + s->match_available = 0; + s->ins_h = 0; +#ifndef FASTEST +#ifdef ASMV + match_init(); /* initialize the asm code */ +#endif +#endif +} + +#ifndef FASTEST +/* =========================================================================== + * Set match_start to the longest match starting at the given string and + * return its length. Matches shorter or equal to prev_length are discarded, + * in which case the result is equal to prev_length and match_start is + * garbage. + * IN assertions: cur_match is the head of the hash chain for the current + * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1 + * OUT assertion: the match length is not greater than s->lookahead. + */ +#ifndef ASMV +/* For 80x86 and 680x0, an optimized version will be provided in match.asm or + * match.S. The code will be functionally equivalent. + */ +local uInt longest_match(s, cur_match) + deflate_state *s; + IPos cur_match; /* current match */ +{ + unsigned chain_length = s->max_chain_length;/* max hash chain length */ + register Bytef *scan = s->window + s->strstart; /* current string */ + register Bytef *match; /* matched string */ + register int len; /* length of current match */ + int best_len = s->prev_length; /* best match length so far */ + int nice_match = s->nice_match; /* stop if match long enough */ + IPos limit = s->strstart > (IPos)MAX_DIST(s) ? + s->strstart - (IPos)MAX_DIST(s) : NIL; + /* Stop when cur_match becomes <= limit. To simplify the code, + * we prevent matches with the string of window index 0. + */ + Posf *prev = s->prev; + uInt wmask = s->w_mask; + +#ifdef UNALIGNED_OK + /* Compare two bytes at a time. Note: this is not always beneficial. + * Try with and without -DUNALIGNED_OK to check. + */ + register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1; + register ush scan_start = *(ushf*)scan; + register ush scan_end = *(ushf*)(scan+best_len-1); +#else + register Bytef *strend = s->window + s->strstart + MAX_MATCH; + register Byte scan_end1 = scan[best_len-1]; + register Byte scan_end = scan[best_len]; +#endif + + /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. + * It is easy to get rid of this optimization if necessary. + */ + Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); + + /* Do not waste too much time if we already have a good match: */ + if (s->prev_length >= s->good_match) { + chain_length >>= 2; + } + /* Do not look for matches beyond the end of the input. This is necessary + * to make deflate deterministic. + */ + if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead; + + Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); + + do { + Assert(cur_match < s->strstart, "no future"); + match = s->window + cur_match; + + /* Skip to next match if the match length cannot increase + * or if the match length is less than 2. Note that the checks below + * for insufficient lookahead only occur occasionally for performance + * reasons. Therefore uninitialized memory will be accessed, and + * conditional jumps will be made that depend on those values. + * However the length of the match is limited to the lookahead, so + * the output of deflate is not affected by the uninitialized values. + */ +#if (defined(UNALIGNED_OK) && MAX_MATCH == 258) + /* This code assumes sizeof(unsigned short) == 2. Do not use + * UNALIGNED_OK if your compiler uses a different size. + */ + if (*(ushf*)(match+best_len-1) != scan_end || + *(ushf*)match != scan_start) continue; + + /* It is not necessary to compare scan[2] and match[2] since they are + * always equal when the other bytes match, given that the hash keys + * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at + * strstart+3, +5, ... up to strstart+257. We check for insufficient + * lookahead only every 4th comparison; the 128th check will be made + * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is + * necessary to put more guard bytes at the end of the window, or + * to check more often for insufficient lookahead. + */ + Assert(scan[2] == match[2], "scan[2]?"); + scan++, match++; + do { + } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) && + *(ushf*)(scan+=2) == *(ushf*)(match+=2) && + *(ushf*)(scan+=2) == *(ushf*)(match+=2) && + *(ushf*)(scan+=2) == *(ushf*)(match+=2) && + scan < strend); + /* The funny "do {}" generates better code on most compilers */ + + /* Here, scan <= window+strstart+257 */ + Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); + if (*scan == *match) scan++; + + len = (MAX_MATCH - 1) - (int)(strend-scan); + scan = strend - (MAX_MATCH-1); + +#else /* UNALIGNED_OK */ + + if (match[best_len] != scan_end || + match[best_len-1] != scan_end1 || + *match != *scan || + *++match != scan[1]) continue; + + /* The check at best_len-1 can be removed because it will be made + * again later. (This heuristic is not always a win.) + * It is not necessary to compare scan[2] and match[2] since they + * are always equal when the other bytes match, given that + * the hash keys are equal and that HASH_BITS >= 8. + */ + scan += 2, match++; + Assert(*scan == *match, "match[2]?"); + + /* We check for insufficient lookahead only every 8th comparison; + * the 256th check will be made at strstart+258. + */ + do { + } while (*++scan == *++match && *++scan == *++match && + *++scan == *++match && *++scan == *++match && + *++scan == *++match && *++scan == *++match && + *++scan == *++match && *++scan == *++match && + scan < strend); + + Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); + + len = MAX_MATCH - (int)(strend - scan); + scan = strend - MAX_MATCH; + +#endif /* UNALIGNED_OK */ + + if (len > best_len) { + s->match_start = cur_match; + best_len = len; + if (len >= nice_match) break; +#ifdef UNALIGNED_OK + scan_end = *(ushf*)(scan+best_len-1); +#else + scan_end1 = scan[best_len-1]; + scan_end = scan[best_len]; +#endif + } + } while ((cur_match = prev[cur_match & wmask]) > limit + && --chain_length != 0); + + if ((uInt)best_len <= s->lookahead) return (uInt)best_len; + return s->lookahead; +} +#endif /* ASMV */ + +#else /* FASTEST */ + +/* --------------------------------------------------------------------------- + * Optimized version for FASTEST only + */ +local uInt longest_match(s, cur_match) + deflate_state *s; + IPos cur_match; /* current match */ +{ + register Bytef *scan = s->window + s->strstart; /* current string */ + register Bytef *match; /* matched string */ + register int len; /* length of current match */ + register Bytef *strend = s->window + s->strstart + MAX_MATCH; + + /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16. + * It is easy to get rid of this optimization if necessary. + */ + Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever"); + + Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead"); + + Assert(cur_match < s->strstart, "no future"); + + match = s->window + cur_match; + + /* Return failure if the match length is less than 2: + */ + if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1; + + /* The check at best_len-1 can be removed because it will be made + * again later. (This heuristic is not always a win.) + * It is not necessary to compare scan[2] and match[2] since they + * are always equal when the other bytes match, given that + * the hash keys are equal and that HASH_BITS >= 8. + */ + scan += 2, match += 2; + Assert(*scan == *match, "match[2]?"); + + /* We check for insufficient lookahead only every 8th comparison; + * the 256th check will be made at strstart+258. + */ + do { + } while (*++scan == *++match && *++scan == *++match && + *++scan == *++match && *++scan == *++match && + *++scan == *++match && *++scan == *++match && + *++scan == *++match && *++scan == *++match && + scan < strend); + + Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan"); + + len = MAX_MATCH - (int)(strend - scan); + + if (len < MIN_MATCH) return MIN_MATCH - 1; + + s->match_start = cur_match; + return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead; +} + +#endif /* FASTEST */ + +#ifdef DEBUG +/* =========================================================================== + * Check that the match at match_start is indeed a match. + */ +local void check_match(s, start, match, length) + deflate_state *s; + IPos start, match; + int length; +{ + /* check that the match is indeed a match */ + if (zmemcmp(s->window + match, + s->window + start, length) != EQUAL) { + fprintf(stderr, " start %u, match %u, length %d\n", + start, match, length); + do { + fprintf(stderr, "%c%c", s->window[match++], s->window[start++]); + } while (--length != 0); + z_error("invalid match"); + } + if (z_verbose > 1) { + fprintf(stderr,"\\[%d,%d]", start-match, length); + do { putc(s->window[start++], stderr); } while (--length != 0); + } +} +#else +# define check_match(s, start, match, length) +#endif /* DEBUG */ + +/* =========================================================================== + * Fill the window when the lookahead becomes insufficient. + * Updates strstart and lookahead. + * + * IN assertion: lookahead < MIN_LOOKAHEAD + * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD + * At least one byte has been read, or avail_in == 0; reads are + * performed for at least two bytes (required for the zip translate_eol + * option -- not supported here). + */ +local void fill_window(s) + deflate_state *s; +{ + register unsigned n, m; + register Posf *p; + unsigned more; /* Amount of free space at the end of the window. */ + uInt wsize = s->w_size; + + Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead"); + + do { + more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart); + + /* Deal with !@#$% 64K limit: */ + if (sizeof(int) <= 2) { + if (more == 0 && s->strstart == 0 && s->lookahead == 0) { + more = wsize; + + } else if (more == (unsigned)(-1)) { + /* Very unlikely, but possible on 16 bit machine if + * strstart == 0 && lookahead == 1 (input done a byte at time) + */ + more--; + } + } + + /* If the window is almost full and there is insufficient lookahead, + * move the upper half to the lower one to make room in the upper half. + */ + if (s->strstart >= wsize+MAX_DIST(s)) { + + zmemcpy(s->window, s->window+wsize, (unsigned)wsize); + s->match_start -= wsize; + s->strstart -= wsize; /* we now have strstart >= MAX_DIST */ + s->block_start -= (long) wsize; + + /* Slide the hash table (could be avoided with 32 bit values + at the expense of memory usage). We slide even when level == 0 + to keep the hash table consistent if we switch back to level > 0 + later. (Using level 0 permanently is not an optimal usage of + zlib, so we don't care about this pathological case.) + */ + n = s->hash_size; + p = &s->head[n]; + do { + m = *--p; + *p = (Pos)(m >= wsize ? m-wsize : NIL); + } while (--n); + + n = wsize; +#ifndef FASTEST + p = &s->prev[n]; + do { + m = *--p; + *p = (Pos)(m >= wsize ? m-wsize : NIL); + /* If n is not on any hash chain, prev[n] is garbage but + * its value will never be used. + */ + } while (--n); +#endif + more += wsize; + } + if (s->strm->avail_in == 0) break; + + /* If there was no sliding: + * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 && + * more == window_size - lookahead - strstart + * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1) + * => more >= window_size - 2*WSIZE + 2 + * In the BIG_MEM or MMAP case (not yet supported), + * window_size == input_size + MIN_LOOKAHEAD && + * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD. + * Otherwise, window_size == 2*WSIZE so more >= 2. + * If there was sliding, more >= WSIZE. So in all cases, more >= 2. + */ + Assert(more >= 2, "more < 2"); + + n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more); + s->lookahead += n; + + /* Initialize the hash value now that we have some input: */ + if (s->lookahead + s->insert >= MIN_MATCH) { + uInt str = s->strstart - s->insert; + s->ins_h = s->window[str]; + UPDATE_HASH(s, s->ins_h, s->window[str + 1]); +#if MIN_MATCH != 3 + Call UPDATE_HASH() MIN_MATCH-3 more times +#endif + while (s->insert) { + UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); +#ifndef FASTEST + s->prev[str & s->w_mask] = s->head[s->ins_h]; +#endif + s->head[s->ins_h] = (Pos)str; + str++; + s->insert--; + if (s->lookahead + s->insert < MIN_MATCH) + break; + } + } + /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage, + * but this is not important since only literal bytes will be emitted. + */ + + } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0); + + /* If the WIN_INIT bytes after the end of the current data have never been + * written, then zero those bytes in order to avoid memory check reports of + * the use of uninitialized (or uninitialised as Julian writes) bytes by + * the longest match routines. Update the high water mark for the next + * time through here. WIN_INIT is set to MAX_MATCH since the longest match + * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead. + */ + if (s->high_water < s->window_size) { + ulg curr = s->strstart + (ulg)(s->lookahead); + ulg init; + + if (s->high_water < curr) { + /* Previous high water mark below current data -- zero WIN_INIT + * bytes or up to end of window, whichever is less. + */ + init = s->window_size - curr; + if (init > WIN_INIT) + init = WIN_INIT; + zmemzero(s->window + curr, (unsigned)init); + s->high_water = curr + init; + } + else if (s->high_water < (ulg)curr + WIN_INIT) { + /* High water mark at or above current data, but below current data + * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up + * to end of window, whichever is less. + */ + init = (ulg)curr + WIN_INIT - s->high_water; + if (init > s->window_size - s->high_water) + init = s->window_size - s->high_water; + zmemzero(s->window + s->high_water, (unsigned)init); + s->high_water += init; + } + } + + Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD, + "not enough room for search"); +} + +/* =========================================================================== + * Flush the current block, with given end-of-file flag. + * IN assertion: strstart is set to the end of the current match. + */ +#define FLUSH_BLOCK_ONLY(s, last) { \ + _tr_flush_block(s, (s->block_start >= 0L ? \ + (charf *)&s->window[(unsigned)s->block_start] : \ + (charf *)Z_NULL), \ + (ulg)((long)s->strstart - s->block_start), \ + (last)); \ + s->block_start = s->strstart; \ + flush_pending(s->strm); \ + Tracev((stderr,"[FLUSH]")); \ +} + +/* Same but force premature exit if necessary. */ +#define FLUSH_BLOCK(s, last) { \ + FLUSH_BLOCK_ONLY(s, last); \ + if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \ +} + +/* =========================================================================== + * Copy without compression as much as possible from the input stream, return + * the current block state. + * This function does not insert new strings in the dictionary since + * uncompressible data is probably not useful. This function is used + * only for the level=0 compression option. + * NOTE: this function should be optimized to avoid extra copying from + * window to pending_buf. + */ +local block_state deflate_stored(s, flush) + deflate_state *s; + int flush; +{ + /* Stored blocks are limited to 0xffff bytes, pending_buf is limited + * to pending_buf_size, and each stored block has a 5 byte header: + */ + ulg max_block_size = 0xffff; + ulg max_start; + + if (max_block_size > s->pending_buf_size - 5) { + max_block_size = s->pending_buf_size - 5; + } + + /* Copy as much as possible from input to output: */ + for (;;) { + /* Fill the window as much as possible: */ + if (s->lookahead <= 1) { + + Assert(s->strstart < s->w_size+MAX_DIST(s) || + s->block_start >= (long)s->w_size, "slide too late"); + + fill_window(s); + if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more; + + if (s->lookahead == 0) break; /* flush the current block */ + } + Assert(s->block_start >= 0L, "block gone"); + + s->strstart += s->lookahead; + s->lookahead = 0; + + /* Emit a stored block if pending_buf will be full: */ + max_start = s->block_start + max_block_size; + if (s->strstart == 0 || (ulg)s->strstart >= max_start) { + /* strstart == 0 is possible when wraparound on 16-bit machine */ + s->lookahead = (uInt)(s->strstart - max_start); + s->strstart = (uInt)max_start; + FLUSH_BLOCK(s, 0); + } + /* Flush if we may have to slide, otherwise block_start may become + * negative and the data will be gone: + */ + if (s->strstart - (uInt)s->block_start >= MAX_DIST(s)) { + FLUSH_BLOCK(s, 0); + } + } + s->insert = 0; + if (flush == Z_FINISH) { + FLUSH_BLOCK(s, 1); + return finish_done; + } + if ((long)s->strstart > s->block_start) + FLUSH_BLOCK(s, 0); + return block_done; +} + +/* =========================================================================== + * Compress as much as possible from the input stream, return the current + * block state. + * This function does not perform lazy evaluation of matches and inserts + * new strings in the dictionary only for unmatched strings or for short + * matches. It is used only for the fast compression options. + */ +local block_state deflate_fast(s, flush) + deflate_state *s; + int flush; +{ + IPos hash_head; /* head of the hash chain */ + int bflush; /* set if current block must be flushed */ + + for (;;) { + /* Make sure that we always have enough lookahead, except + * at the end of the input file. We need MAX_MATCH bytes + * for the next match, plus MIN_MATCH bytes to insert the + * string following the next match. + */ + if (s->lookahead < MIN_LOOKAHEAD) { + fill_window(s); + if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { + return need_more; + } + if (s->lookahead == 0) break; /* flush the current block */ + } + + /* Insert the string window[strstart .. strstart+2] in the + * dictionary, and set hash_head to the head of the hash chain: + */ + hash_head = NIL; + if (s->lookahead >= MIN_MATCH) { + INSERT_STRING(s, s->strstart, hash_head); + } + + /* Find the longest match, discarding those <= prev_length. + * At this point we have always match_length < MIN_MATCH + */ + if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) { + /* To simplify the code, we prevent matches with the string + * of window index 0 (in particular we have to avoid a match + * of the string with itself at the start of the input file). + */ + s->match_length = longest_match (s, hash_head); + /* longest_match() sets match_start */ + } + if (s->match_length >= MIN_MATCH) { + check_match(s, s->strstart, s->match_start, s->match_length); + + _tr_tally_dist(s, s->strstart - s->match_start, + s->match_length - MIN_MATCH, bflush); + + s->lookahead -= s->match_length; + + /* Insert new strings in the hash table only if the match length + * is not too large. This saves time but degrades compression. + */ +#ifndef FASTEST + if (s->match_length <= s->max_insert_length && + s->lookahead >= MIN_MATCH) { + s->match_length--; /* string at strstart already in table */ + do { + s->strstart++; + INSERT_STRING(s, s->strstart, hash_head); + /* strstart never exceeds WSIZE-MAX_MATCH, so there are + * always MIN_MATCH bytes ahead. + */ + } while (--s->match_length != 0); + s->strstart++; + } else +#endif + { + s->strstart += s->match_length; + s->match_length = 0; + s->ins_h = s->window[s->strstart]; + UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]); +#if MIN_MATCH != 3 + Call UPDATE_HASH() MIN_MATCH-3 more times +#endif + /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not + * matter since it will be recomputed at next deflate call. + */ + } + } else { + /* No match, output a literal byte */ + Tracevv((stderr,"%c", s->window[s->strstart])); + _tr_tally_lit (s, s->window[s->strstart], bflush); + s->lookahead--; + s->strstart++; + } + if (bflush) FLUSH_BLOCK(s, 0); + } + s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1; + if (flush == Z_FINISH) { + FLUSH_BLOCK(s, 1); + return finish_done; + } + if (s->last_lit) + FLUSH_BLOCK(s, 0); + return block_done; +} + +#ifndef FASTEST +/* =========================================================================== + * Same as above, but achieves better compression. We use a lazy + * evaluation for matches: a match is finally adopted only if there is + * no better match at the next window position. + */ +local block_state deflate_slow(s, flush) + deflate_state *s; + int flush; +{ + IPos hash_head; /* head of hash chain */ + int bflush; /* set if current block must be flushed */ + + /* Process the input block. */ + for (;;) { + /* Make sure that we always have enough lookahead, except + * at the end of the input file. We need MAX_MATCH bytes + * for the next match, plus MIN_MATCH bytes to insert the + * string following the next match. + */ + if (s->lookahead < MIN_LOOKAHEAD) { + fill_window(s); + if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) { + return need_more; + } + if (s->lookahead == 0) break; /* flush the current block */ + } + + /* Insert the string window[strstart .. strstart+2] in the + * dictionary, and set hash_head to the head of the hash chain: + */ + hash_head = NIL; + if (s->lookahead >= MIN_MATCH) { + INSERT_STRING(s, s->strstart, hash_head); + } + + /* Find the longest match, discarding those <= prev_length. + */ + s->prev_length = s->match_length, s->prev_match = s->match_start; + s->match_length = MIN_MATCH-1; + + if (hash_head != NIL && s->prev_length < s->max_lazy_match && + s->strstart - hash_head <= MAX_DIST(s)) { + /* To simplify the code, we prevent matches with the string + * of window index 0 (in particular we have to avoid a match + * of the string with itself at the start of the input file). + */ + s->match_length = longest_match (s, hash_head); + /* longest_match() sets match_start */ + + if (s->match_length <= 5 && (s->strategy == Z_FILTERED +#if TOO_FAR <= 32767 + || (s->match_length == MIN_MATCH && + s->strstart - s->match_start > TOO_FAR) +#endif + )) { + + /* If prev_match is also MIN_MATCH, match_start is garbage + * but we will ignore the current match anyway. + */ + s->match_length = MIN_MATCH-1; + } + } + /* If there was a match at the previous step and the current + * match is not better, output the previous match: + */ + if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) { + uInt max_insert = s->strstart + s->lookahead - MIN_MATCH; + /* Do not insert strings in hash table beyond this. */ + + check_match(s, s->strstart-1, s->prev_match, s->prev_length); + + _tr_tally_dist(s, s->strstart -1 - s->prev_match, + s->prev_length - MIN_MATCH, bflush); + + /* Insert in hash table all strings up to the end of the match. + * strstart-1 and strstart are already inserted. If there is not + * enough lookahead, the last two strings are not inserted in + * the hash table. + */ + s->lookahead -= s->prev_length-1; + s->prev_length -= 2; + do { + if (++s->strstart <= max_insert) { + INSERT_STRING(s, s->strstart, hash_head); + } + } while (--s->prev_length != 0); + s->match_available = 0; + s->match_length = MIN_MATCH-1; + s->strstart++; + + if (bflush) FLUSH_BLOCK(s, 0); + + } else if (s->match_available) { + /* If there was no match at the previous position, output a + * single literal. If there was a match but the current match + * is longer, truncate the previous match to a single literal. + */ + Tracevv((stderr,"%c", s->window[s->strstart-1])); + _tr_tally_lit(s, s->window[s->strstart-1], bflush); + if (bflush) { + FLUSH_BLOCK_ONLY(s, 0); + } + s->strstart++; + s->lookahead--; + if (s->strm->avail_out == 0) return need_more; + } else { + /* There is no previous match to compare with, wait for + * the next step to decide. + */ + s->match_available = 1; + s->strstart++; + s->lookahead--; + } + } + Assert (flush != Z_NO_FLUSH, "no flush?"); + if (s->match_available) { + Tracevv((stderr,"%c", s->window[s->strstart-1])); + _tr_tally_lit(s, s->window[s->strstart-1], bflush); + s->match_available = 0; + } + s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1; + if (flush == Z_FINISH) { + FLUSH_BLOCK(s, 1); + return finish_done; + } + if (s->last_lit) + FLUSH_BLOCK(s, 0); + return block_done; +} +#endif /* FASTEST */ + +/* =========================================================================== + * For Z_RLE, simply look for runs of bytes, generate matches only of distance + * one. Do not maintain a hash table. (It will be regenerated if this run of + * deflate switches away from Z_RLE.) + */ +local block_state deflate_rle(s, flush) + deflate_state *s; + int flush; +{ + int bflush; /* set if current block must be flushed */ + uInt prev; /* byte at distance one to match */ + Bytef *scan, *strend; /* scan goes up to strend for length of run */ + + for (;;) { + /* Make sure that we always have enough lookahead, except + * at the end of the input file. We need MAX_MATCH bytes + * for the longest run, plus one for the unrolled loop. + */ + if (s->lookahead <= MAX_MATCH) { + fill_window(s); + if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) { + return need_more; + } + if (s->lookahead == 0) break; /* flush the current block */ + } + + /* See how many times the previous byte repeats */ + s->match_length = 0; + if (s->lookahead >= MIN_MATCH && s->strstart > 0) { + scan = s->window + s->strstart - 1; + prev = *scan; + if (prev == *++scan && prev == *++scan && prev == *++scan) { + strend = s->window + s->strstart + MAX_MATCH; + do { + } while (prev == *++scan && prev == *++scan && + prev == *++scan && prev == *++scan && + prev == *++scan && prev == *++scan && + prev == *++scan && prev == *++scan && + scan < strend); + s->match_length = MAX_MATCH - (int)(strend - scan); + if (s->match_length > s->lookahead) + s->match_length = s->lookahead; + } + Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan"); + } + + /* Emit match if have run of MIN_MATCH or longer, else emit literal */ + if (s->match_length >= MIN_MATCH) { + check_match(s, s->strstart, s->strstart - 1, s->match_length); + + _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush); + + s->lookahead -= s->match_length; + s->strstart += s->match_length; + s->match_length = 0; + } else { + /* No match, output a literal byte */ + Tracevv((stderr,"%c", s->window[s->strstart])); + _tr_tally_lit (s, s->window[s->strstart], bflush); + s->lookahead--; + s->strstart++; + } + if (bflush) FLUSH_BLOCK(s, 0); + } + s->insert = 0; + if (flush == Z_FINISH) { + FLUSH_BLOCK(s, 1); + return finish_done; + } + if (s->last_lit) + FLUSH_BLOCK(s, 0); + return block_done; +} + +/* =========================================================================== + * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table. + * (It will be regenerated if this run of deflate switches away from Huffman.) + */ +local block_state deflate_huff(s, flush) + deflate_state *s; + int flush; +{ + int bflush; /* set if current block must be flushed */ + + for (;;) { + /* Make sure that we have a literal to write. */ + if (s->lookahead == 0) { + fill_window(s); + if (s->lookahead == 0) { + if (flush == Z_NO_FLUSH) + return need_more; + break; /* flush the current block */ + } + } + + /* Output a literal byte */ + s->match_length = 0; + Tracevv((stderr,"%c", s->window[s->strstart])); + _tr_tally_lit (s, s->window[s->strstart], bflush); + s->lookahead--; + s->strstart++; + if (bflush) FLUSH_BLOCK(s, 0); + } + s->insert = 0; + if (flush == Z_FINISH) { + FLUSH_BLOCK(s, 1); + return finish_done; + } + if (s->last_lit) + FLUSH_BLOCK(s, 0); + return block_done; +} diff --git a/sdk-modifications/libsrc/zlib/deflate.h b/sdk-modifications/libsrc/zlib/deflate.h new file mode 100644 index 0000000..fbac44d --- /dev/null +++ b/sdk-modifications/libsrc/zlib/deflate.h @@ -0,0 +1,346 @@ +/* deflate.h -- internal compression state + * Copyright (C) 1995-2012 Jean-loup Gailly + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* WARNING: this file should *not* be used by applications. It is + part of the implementation of the compression library and is + subject to change. Applications should only use zlib.h. + */ + +/* @(#) $Id$ */ + +#ifndef DEFLATE_H +#define DEFLATE_H + +#include "zutil.h" + +/* define NO_GZIP when compiling if you want to disable gzip header and + trailer creation by deflate(). NO_GZIP would be used to avoid linking in + the crc code when it is not needed. For shared libraries, gzip encoding + should be left enabled. */ +#ifndef NO_GZIP +# define GZIP +#endif + +/* =========================================================================== + * Internal compression state. + */ + +#define LENGTH_CODES 29 +/* number of length codes, not counting the special END_BLOCK code */ + +#define LITERALS 256 +/* number of literal bytes 0..255 */ + +#define L_CODES (LITERALS+1+LENGTH_CODES) +/* number of Literal or Length codes, including the END_BLOCK code */ + +#define D_CODES 30 +/* number of distance codes */ + +#define BL_CODES 19 +/* number of codes used to transfer the bit lengths */ + +#define HEAP_SIZE (2*L_CODES+1) +/* maximum heap size */ + +#define MAX_BITS 15 +/* All codes must not exceed MAX_BITS bits */ + +#define Buf_size 16 +/* size of bit buffer in bi_buf */ + +#define INIT_STATE 42 +#define EXTRA_STATE 69 +#define NAME_STATE 73 +#define COMMENT_STATE 91 +#define HCRC_STATE 103 +#define BUSY_STATE 113 +#define FINISH_STATE 666 +/* Stream status */ + + +/* Data structure describing a single value and its code string. */ +typedef struct ct_data_s { + union { + ush freq; /* frequency count */ + ush code; /* bit string */ + } fc; + union { + ush dad; /* father node in Huffman tree */ + ush len; /* length of bit string */ + } dl; +} FAR ct_data; + +#define Freq fc.freq +#define Code fc.code +#define Dad dl.dad +#define Len dl.len + +typedef struct static_tree_desc_s static_tree_desc; + +typedef struct tree_desc_s { + ct_data *dyn_tree; /* the dynamic tree */ + int max_code; /* largest code with non zero frequency */ + static_tree_desc *stat_desc; /* the corresponding static tree */ +} FAR tree_desc; + +typedef ush Pos; +typedef Pos FAR Posf; +typedef unsigned IPos; + +/* A Pos is an index in the character window. We use short instead of int to + * save space in the various tables. IPos is used only for parameter passing. + */ + +typedef struct internal_state { + z_streamp strm; /* pointer back to this zlib stream */ + int status; /* as the name implies */ + Bytef *pending_buf; /* output still pending */ + ulg pending_buf_size; /* size of pending_buf */ + Bytef *pending_out; /* next pending byte to output to the stream */ + uInt pending; /* nb of bytes in the pending buffer */ + int wrap; /* bit 0 true for zlib, bit 1 true for gzip */ + gz_headerp gzhead; /* gzip header information to write */ + uInt gzindex; /* where in extra, name, or comment */ + Byte method; /* STORED (for zip only) or DEFLATED */ + int last_flush; /* value of flush param for previous deflate call */ + + /* used by deflate.c: */ + + uInt w_size; /* LZ77 window size (32K by default) */ + uInt w_bits; /* log2(w_size) (8..16) */ + uInt w_mask; /* w_size - 1 */ + + Bytef *window; + /* Sliding window. Input bytes are read into the second half of the window, + * and move to the first half later to keep a dictionary of at least wSize + * bytes. With this organization, matches are limited to a distance of + * wSize-MAX_MATCH bytes, but this ensures that IO is always + * performed with a length multiple of the block size. Also, it limits + * the window size to 64K, which is quite useful on MSDOS. + * To do: use the user input buffer as sliding window. + */ + + ulg window_size; + /* Actual size of window: 2*wSize, except when the user input buffer + * is directly used as sliding window. + */ + + Posf *prev; + /* Link to older string with same hash index. To limit the size of this + * array to 64K, this link is maintained only for the last 32K strings. + * An index in this array is thus a window index modulo 32K. + */ + + Posf *head; /* Heads of the hash chains or NIL. */ + + uInt ins_h; /* hash index of string to be inserted */ + uInt hash_size; /* number of elements in hash table */ + uInt hash_bits; /* log2(hash_size) */ + uInt hash_mask; /* hash_size-1 */ + + uInt hash_shift; + /* Number of bits by which ins_h must be shifted at each input + * step. It must be such that after MIN_MATCH steps, the oldest + * byte no longer takes part in the hash key, that is: + * hash_shift * MIN_MATCH >= hash_bits + */ + + long block_start; + /* Window position at the beginning of the current output block. Gets + * negative when the window is moved backwards. + */ + + uInt match_length; /* length of best match */ + IPos prev_match; /* previous match */ + int match_available; /* set if previous match exists */ + uInt strstart; /* start of string to insert */ + uInt match_start; /* start of matching string */ + uInt lookahead; /* number of valid bytes ahead in window */ + + uInt prev_length; + /* Length of the best match at previous step. Matches not greater than this + * are discarded. This is used in the lazy match evaluation. + */ + + uInt max_chain_length; + /* To speed up deflation, hash chains are never searched beyond this + * length. A higher limit improves compression ratio but degrades the + * speed. + */ + + uInt max_lazy_match; + /* Attempt to find a better match only when the current match is strictly + * smaller than this value. This mechanism is used only for compression + * levels >= 4. + */ +# define max_insert_length max_lazy_match + /* Insert new strings in the hash table only if the match length is not + * greater than this length. This saves time but degrades compression. + * max_insert_length is used only for compression levels <= 3. + */ + + int level; /* compression level (1..9) */ + int strategy; /* favor or force Huffman coding*/ + + uInt good_match; + /* Use a faster search when the previous match is longer than this */ + + int nice_match; /* Stop searching when current match exceeds this */ + + /* used by trees.c: */ + /* Didn't use ct_data typedef below to suppress compiler warning */ + struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */ + struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */ + struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */ + + struct tree_desc_s l_desc; /* desc. for literal tree */ + struct tree_desc_s d_desc; /* desc. for distance tree */ + struct tree_desc_s bl_desc; /* desc. for bit length tree */ + + ush bl_count[MAX_BITS+1]; + /* number of codes at each bit length for an optimal tree */ + + int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */ + int heap_len; /* number of elements in the heap */ + int heap_max; /* element of largest frequency */ + /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used. + * The same heap array is used to build all trees. + */ + + uch depth[2*L_CODES+1]; + /* Depth of each subtree used as tie breaker for trees of equal frequency + */ + + uchf *l_buf; /* buffer for literals or lengths */ + + uInt lit_bufsize; + /* Size of match buffer for literals/lengths. There are 4 reasons for + * limiting lit_bufsize to 64K: + * - frequencies can be kept in 16 bit counters + * - if compression is not successful for the first block, all input + * data is still in the window so we can still emit a stored block even + * when input comes from standard input. (This can also be done for + * all blocks if lit_bufsize is not greater than 32K.) + * - if compression is not successful for a file smaller than 64K, we can + * even emit a stored file instead of a stored block (saving 5 bytes). + * This is applicable only for zip (not gzip or zlib). + * - creating new Huffman trees less frequently may not provide fast + * adaptation to changes in the input data statistics. (Take for + * example a binary file with poorly compressible code followed by + * a highly compressible string table.) Smaller buffer sizes give + * fast adaptation but have of course the overhead of transmitting + * trees more frequently. + * - I can't count above 4 + */ + + uInt last_lit; /* running index in l_buf */ + + ushf *d_buf; + /* Buffer for distances. To simplify the code, d_buf and l_buf have + * the same number of elements. To use different lengths, an extra flag + * array would be necessary. + */ + + ulg opt_len; /* bit length of current block with optimal trees */ + ulg static_len; /* bit length of current block with static trees */ + uInt matches; /* number of string matches in current block */ + uInt insert; /* bytes at end of window left to insert */ + +#ifdef DEBUG + ulg compressed_len; /* total bit length of compressed file mod 2^32 */ + ulg bits_sent; /* bit length of compressed data sent mod 2^32 */ +#endif + + ush bi_buf; + /* Output buffer. bits are inserted starting at the bottom (least + * significant bits). + */ + int bi_valid; + /* Number of valid bits in bi_buf. All bits above the last valid bit + * are always zero. + */ + + ulg high_water; + /* High water mark offset in window for initialized bytes -- bytes above + * this are set to zero in order to avoid memory check warnings when + * longest match routines access bytes past the input. This is then + * updated to the new high water mark. + */ + +} FAR deflate_state; + +/* Output a byte on the stream. + * IN assertion: there is enough room in pending_buf. + */ +#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);} + + +#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1) +/* Minimum amount of lookahead, except at the end of the input file. + * See deflate.c for comments about the MIN_MATCH+1. + */ + +#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD) +/* In order to simplify the code, particularly on 16 bit machines, match + * distances are limited to MAX_DIST instead of WSIZE. + */ + +#define WIN_INIT MAX_MATCH +/* Number of bytes after end of data in window to initialize in order to avoid + memory checker errors from longest match routines */ + + /* in trees.c */ +void ZLIB_INTERNAL _tr_init OF((deflate_state *s)); +int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc)); +void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf, + ulg stored_len, int last)); +void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s)); +void ZLIB_INTERNAL _tr_align OF((deflate_state *s)); +void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf, + ulg stored_len, int last)); + +#define d_code(dist) \ + ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)]) +/* Mapping from a distance to a distance code. dist is the distance - 1 and + * must not have side effects. _dist_code[256] and _dist_code[257] are never + * used. + */ + +#ifndef DEBUG +/* Inline versions of _tr_tally for speed: */ + +#if defined(GEN_TREES_H) || !defined(STDC) + extern uch ZLIB_INTERNAL _length_code[]; + extern uch ZLIB_INTERNAL _dist_code[]; +#else + extern const uch ZLIB_INTERNAL _length_code[]; + extern const uch ZLIB_INTERNAL _dist_code[]; +#endif + +# define _tr_tally_lit(s, c, flush) \ + { uch cc = (c); \ + s->d_buf[s->last_lit] = 0; \ + s->l_buf[s->last_lit++] = cc; \ + s->dyn_ltree[cc].Freq++; \ + flush = (s->last_lit == s->lit_bufsize-1); \ + } +# define _tr_tally_dist(s, distance, length, flush) \ + { uch len = (length); \ + ush dist = (distance); \ + s->d_buf[s->last_lit] = dist; \ + s->l_buf[s->last_lit++] = len; \ + dist--; \ + s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \ + s->dyn_dtree[d_code(dist)].Freq++; \ + flush = (s->last_lit == s->lit_bufsize-1); \ + } +#else +# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c) +# define _tr_tally_dist(s, distance, length, flush) \ + flush = _tr_tally(s, distance, length) +#endif + +#endif /* DEFLATE_H */ diff --git a/sdk-modifications/libsrc/zlib/gzclose.c b/sdk-modifications/libsrc/zlib/gzclose.c new file mode 100644 index 0000000..caeb99a --- /dev/null +++ b/sdk-modifications/libsrc/zlib/gzclose.c @@ -0,0 +1,25 @@ +/* gzclose.c -- zlib gzclose() function + * Copyright (C) 2004, 2010 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "gzguts.h" + +/* gzclose() is in a separate file so that it is linked in only if it is used. + That way the other gzclose functions can be used instead to avoid linking in + unneeded compression or decompression routines. */ +int ZEXPORT gzclose(file) + gzFile file; +{ +#ifndef NO_GZCOMPRESS + gz_statep state; + + if (file == NULL) + return Z_STREAM_ERROR; + state = (gz_statep)file; + + return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file); +#else + return gzclose_r(file); +#endif +} diff --git a/sdk-modifications/libsrc/zlib/gzguts.h b/sdk-modifications/libsrc/zlib/gzguts.h new file mode 100644 index 0000000..5405749 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/gzguts.h @@ -0,0 +1,196 @@ +/* gzguts.h -- zlib internal header definitions for gz* operations + * Copyright (C) 2004, 2005, 2010, 2011, 2012 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#ifdef _LARGEFILE64_SOURCE +# ifndef _LARGEFILE_SOURCE +# define _LARGEFILE_SOURCE 1 +# endif +# ifdef _FILE_OFFSET_BITS +# undef _FILE_OFFSET_BITS +# endif +#endif + +#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) +# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) +#else +# define ZLIB_INTERNAL +#endif + +//#include <stdio.h> +#include "zlib.h" + +#include <ds2_malloc.h> +#include <fs_api.h> +#include <ds2_unistd.h> +#include <ds2_fcntl.h> + +#ifdef STDC +//# include <string.h> +//# include <stdlib.h> +//# include <limits.h> +#endif +//#include <fcntl.h> + +#ifdef __TURBOC__ +# include <io.h> +#endif + +#ifdef NO_DEFLATE /* for compatibility with old definition */ +# define NO_GZCOMPRESS +#endif + +#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) +# ifndef HAVE_VSNPRINTF +# define HAVE_VSNPRINTF +# endif +#endif + +#if defined(__CYGWIN__) +# ifndef HAVE_VSNPRINTF +# define HAVE_VSNPRINTF +# endif +#endif + +#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410) +# ifndef HAVE_VSNPRINTF +# define HAVE_VSNPRINTF +# endif +#endif + +#ifndef HAVE_VSNPRINTF +# ifdef MSDOS +/* vsnprintf may exist on some MS-DOS compilers (DJGPP?), + but for now we just assume it doesn't. */ +# define NO_vsnprintf +# endif +# ifdef __TURBOC__ +# define NO_vsnprintf +# endif +# ifdef WIN32 +/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ +# if !defined(vsnprintf) && !defined(NO_vsnprintf) +# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) +# include <io.h> +# define vsnprintf _vsnprintf +# endif +# endif +# endif +# ifdef __SASC +# define NO_vsnprintf +# endif +# ifdef VMS +# define NO_vsnprintf +# endif +# ifdef __OS400__ +# define NO_vsnprintf +# endif +# ifdef __MVS__ +# define NO_vsnprintf +# endif +#endif + +#ifndef local +# define local static +#endif +/* compile with -Dlocal if your debugger can't find static symbols */ + +/* gz* functions always use library allocation functions */ +#ifndef STDC + extern voidp malloc OF((uInt size)); + extern void free OF((voidpf ptr)); +#endif + +/* get errno and strerror definition */ +#if defined UNDER_CE +# include <windows.h> +# define zstrerror() gz_strwinerror((DWORD)GetLastError()) +#else +# ifdef STDC +# // include <errno.h> +# define zstrerror() strerror(errno) +# else +# define zstrerror() "stdio error (consult errno)" +# endif +#endif + +/* provide prototypes for these when building zlib without LFS */ +#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0 + ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); + ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); + ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); + ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); +#endif + +/* default memLevel */ +#if MAX_MEM_LEVEL >= 8 +# define DEF_MEM_LEVEL 8 +#else +# define DEF_MEM_LEVEL MAX_MEM_LEVEL +#endif + +/* default i/o buffer size -- double this for output when reading */ +#define GZBUFSIZE 8192 + +/* gzip modes, also provide a little integrity check on the passed structure */ +#define GZ_NONE 0 +#define GZ_READ 7247 +#define GZ_WRITE 31153 +#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */ + +/* values for gz_state how */ +#define LOOK 0 /* look for a gzip header */ +#define COPY 1 /* copy input directly */ +#define GZIP 2 /* decompress a gzip stream */ + +/* internal gzip file state data structure */ +typedef struct { + /* exposed contents for gzgetc() macro */ + struct gzFile_s x; /* "x" for exposed */ + /* x.have: number of bytes available at x.next */ + /* x.next: next output data to deliver or write */ + /* x.pos: current position in uncompressed data */ + /* used for both reading and writing */ + int mode; /* see gzip modes above */ + int fd; /* file descriptor */ + char *path; /* path or fd for error messages */ + unsigned size; /* buffer size, zero if not allocated yet */ + unsigned want; /* requested buffer size, default is GZBUFSIZE */ + unsigned char *in; /* input buffer */ + unsigned char *out; /* output buffer (double-sized when reading) */ + int direct; /* 0 if processing gzip, 1 if transparent */ + /* just for reading */ + int how; /* 0: get header, 1: copy, 2: decompress */ + z_off64_t start; /* where the gzip data started, for rewinding */ + int eof; /* true if end of input file reached */ + int past; /* true if read requested past end */ + /* just for writing */ + int level; /* compression level */ + int strategy; /* compression strategy */ + /* seek request */ + z_off64_t skip; /* amount to skip (already rewound if backwards) */ + int seek; /* true if seek request pending */ + /* error information */ + int err; /* error code */ + char *msg; /* error message */ + /* zlib inflate or deflate stream */ + z_stream strm; /* stream structure in-place (not a pointer) */ +} gz_state; +typedef gz_state FAR *gz_statep; + +/* shared functions */ +void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *)); +#if defined UNDER_CE +char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error)); +#endif + +/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t + value -- needed when comparing unsigned to z_off64_t, which is signed + (possible z_off64_t types off_t, off64_t, and long are all signed) */ +#ifdef INT_MAX +# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX) +#else +unsigned ZLIB_INTERNAL gz_intmax OF((void)); +# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax()) +#endif diff --git a/sdk-modifications/libsrc/zlib/gzlib.c b/sdk-modifications/libsrc/zlib/gzlib.c new file mode 100644 index 0000000..7aedab8 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/gzlib.c @@ -0,0 +1,564 @@ +/* gzlib.c -- zlib functions common to reading and writing gzip files + * Copyright (C) 2004, 2010, 2011 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "gzguts.h" + +#if defined(_WIN32) && !defined(__BORLANDC__) +# define LSEEK _lseeki64 +#else +#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0 +# define LSEEK lseek64 +#else +# define LSEEK lseek +#endif +#endif + +/* Local functions */ +local void gz_reset OF((gz_statep)); +local gzFile gz_open OF((const char *, int, const char *)); + +#if defined UNDER_CE + +/* Map the Windows error number in ERROR to a locale-dependent error message + string and return a pointer to it. Typically, the values for ERROR come + from GetLastError. + + The string pointed to shall not be modified by the application, but may be + overwritten by a subsequent call to gz_strwinerror + + The gz_strwinerror function does not change the current setting of + GetLastError. */ +char ZLIB_INTERNAL *gz_strwinerror (error) + DWORD error; +{ + static char buf[1024]; + + wchar_t *msgbuf; + DWORD lasterr = GetLastError(); + DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM + | FORMAT_MESSAGE_ALLOCATE_BUFFER, + NULL, + error, + 0, /* Default language */ + (LPVOID)&msgbuf, + 0, + NULL); + if (chars != 0) { + /* If there is an \r\n appended, zap it. */ + if (chars >= 2 + && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') { + chars -= 2; + msgbuf[chars] = 0; + } + + if (chars > sizeof (buf) - 1) { + chars = sizeof (buf) - 1; + msgbuf[chars] = 0; + } + + wcstombs(buf, msgbuf, chars + 1); + LocalFree(msgbuf); + } + else { + sprintf(buf, "unknown win32 error (%ld)", error); + } + + SetLastError(lasterr); + return buf; +} + +#endif /* UNDER_CE */ + +/* Reset gzip file state */ +local void gz_reset(state) + gz_statep state; +{ + state->x.have = 0; /* no output data available */ + if (state->mode == GZ_READ) { /* for reading ... */ + state->eof = 0; /* not at end of file */ + state->past = 0; /* have not read past end yet */ + state->how = LOOK; /* look for gzip header */ + } + state->seek = 0; /* no seek request pending */ + gz_error(state, Z_OK, NULL); /* clear error */ + state->x.pos = 0; /* no uncompressed data yet */ + state->strm.avail_in = 0; /* no input data yet */ +} + +/* Open a gzip file either by name or file descriptor. */ +local gzFile gz_open(path, fd, mode) + const char *path; + int fd; + const char *mode; +{ + gz_statep state; + + /* check input */ + if (path == NULL) + return NULL; + + /* allocate gzFile structure to return */ + state = malloc(sizeof(gz_state)); + if (state == NULL) + return NULL; + state->size = 0; /* no buffers allocated yet */ + state->want = GZBUFSIZE; /* requested buffer size */ + state->msg = NULL; /* no error message yet */ + + /* interpret mode */ + state->mode = GZ_NONE; + state->level = Z_DEFAULT_COMPRESSION; + state->strategy = Z_DEFAULT_STRATEGY; + state->direct = 0; + while (*mode) { + if (*mode >= '0' && *mode <= '9') + state->level = *mode - '0'; + else + switch (*mode) { + case 'r': + state->mode = GZ_READ; + break; +#ifndef NO_GZCOMPRESS + case 'w': + state->mode = GZ_WRITE; + break; + case 'a': + state->mode = GZ_APPEND; + break; +#endif + case '+': /* can't read and write at the same time */ + free(state); + return NULL; + case 'b': /* ignore -- will request binary anyway */ + break; + case 'f': + state->strategy = Z_FILTERED; + break; + case 'h': + state->strategy = Z_HUFFMAN_ONLY; + break; + case 'R': + state->strategy = Z_RLE; + break; + case 'F': + state->strategy = Z_FIXED; + case 'T': + state->direct = 1; + default: /* could consider as an error, but just ignore */ + ; + } + mode++; + } + + /* must provide an "r", "w", or "a" */ + if (state->mode == GZ_NONE) { + free(state); + return NULL; + } + + /* can't force transparent read */ + if (state->mode == GZ_READ) { + if (state->direct) { + free(state); + return NULL; + } + state->direct = 1; /* for empty file */ + } + + /* save the path name for error messages */ + state->path = malloc(strlen(path) + 1); + if (state->path == NULL) { + free(state); + return NULL; + } + strcpy(state->path, path); + + /* open the file with the appropriate mode (or just use fd) */ + state->fd = fd != -1 ? fd : + open(path, +#ifdef O_LARGEFILE + O_LARGEFILE | +#endif +#ifdef O_BINARY + O_BINARY | +#endif + (state->mode == GZ_READ ? + O_RDONLY : + (O_WRONLY | O_CREAT | ( + state->mode == GZ_WRITE ? + O_TRUNC : + O_APPEND))), + 0666); + if (state->fd == -1) { + free(state->path); + free(state); + return NULL; + } + if (state->mode == GZ_APPEND) + state->mode = GZ_WRITE; /* simplify later checks */ + + /* save the current position for rewinding (only if reading) */ + if (state->mode == GZ_READ) { + state->start = LSEEK(state->fd, 0, SEEK_CUR); + if (state->start == -1) state->start = 0; + } + + /* initialize stream */ + gz_reset(state); + + /* return stream */ + return (gzFile)state; +} + +/* -- see zlib.h -- */ +gzFile ZEXPORT gzopen(path, mode) + const char *path; + const char *mode; +{ + return gz_open(path, -1, mode); +} + +/* -- see zlib.h -- */ +gzFile ZEXPORT gzopen64(path, mode) + const char *path; + const char *mode; +{ + return gz_open(path, -1, mode); +} + +/* -- see zlib.h -- */ +gzFile ZEXPORT gzdopen(fd, mode) + int fd; + const char *mode; +{ + char *path; /* identifier for error messages */ + gzFile gz; + + if (fd == -1 || (path = malloc(7 + 3 * sizeof(int))) == NULL) + return NULL; + sprintf(path, "<fd:%d>", fd); /* for debugging */ + gz = gz_open(path, fd, mode); + free(path); + return gz; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzbuffer(file, size) + gzFile file; + unsigned size; +{ + gz_statep state; + + /* get internal structure and check integrity */ + if (file == NULL) + return -1; + state = (gz_statep)file; + if (state->mode != GZ_READ && state->mode != GZ_WRITE) + return -1; + + /* make sure we haven't already allocated memory */ + if (state->size != 0) + return -1; + + /* check and set requested size */ + if (size < 2) + size = 2; /* need two bytes to check magic header */ + state->want = size; + return 0; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzrewind(file) + gzFile file; +{ + gz_statep state; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + + /* check that we're reading and that there's no error */ + if (state->mode != GZ_READ || + (state->err != Z_OK && state->err != Z_BUF_ERROR)) + return -1; + + /* back up and start over */ + if (LSEEK(state->fd, state->start, SEEK_SET) == -1) + return -1; + gz_reset(state); + return 0; +} + +/* -- see zlib.h -- */ +z_off64_t ZEXPORT gzseek64(file, offset, whence) + gzFile file; + z_off64_t offset; + int whence; +{ + unsigned n; + z_off64_t ret; + gz_statep state; + + /* get internal structure and check integrity */ + if (file == NULL) + return -1; + state = (gz_statep)file; + if (state->mode != GZ_READ && state->mode != GZ_WRITE) + return -1; + + /* check that there's no error */ + if (state->err != Z_OK && state->err != Z_BUF_ERROR) + return -1; + + /* can only seek from start or relative to current position */ + if (whence != SEEK_SET && whence != SEEK_CUR) + return -1; + + /* normalize offset to a SEEK_CUR specification */ + if (whence == SEEK_SET) + offset -= state->x.pos; + else if (state->seek) + offset += state->skip; + state->seek = 0; + + /* if within raw area while reading, just go there */ + if (state->mode == GZ_READ && state->how == COPY && + state->x.pos + offset >= 0) { + ret = LSEEK(state->fd, offset - state->x.have, SEEK_CUR); + if (ret == -1) + return -1; + state->x.have = 0; + state->eof = 0; + state->past = 0; + state->seek = 0; + gz_error(state, Z_OK, NULL); + state->strm.avail_in = 0; + state->x.pos += offset; + return state->x.pos; + } + + /* calculate skip amount, rewinding if needed for back seek when reading */ + if (offset < 0) { + if (state->mode != GZ_READ) /* writing -- can't go backwards */ + return -1; + offset += state->x.pos; + if (offset < 0) /* before start of file! */ + return -1; + if (gzrewind(file) == -1) /* rewind, then skip to offset */ + return -1; + } + + /* if reading, skip what's in output buffer (one less gzgetc() check) */ + if (state->mode == GZ_READ) { + n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ? + (unsigned)offset : state->x.have; + state->x.have -= n; + state->x.next += n; + state->x.pos += n; + offset -= n; + } + + /* request skip (if not zero) */ + if (offset) { + state->seek = 1; + state->skip = offset; + } + return state->x.pos + offset; +} + +/* -- see zlib.h -- */ +z_off_t ZEXPORT gzseek(file, offset, whence) + gzFile file; + z_off_t offset; + int whence; +{ + z_off64_t ret; + + ret = gzseek64(file, (z_off64_t)offset, whence); + return ret == (z_off_t)ret ? (z_off_t)ret : -1; +} + +/* -- see zlib.h -- */ +z_off64_t ZEXPORT gztell64(file) + gzFile file; +{ + gz_statep state; + + /* get internal structure and check integrity */ + if (file == NULL) + return -1; + state = (gz_statep)file; + if (state->mode != GZ_READ && state->mode != GZ_WRITE) + return -1; + + /* return position */ + return state->x.pos + (state->seek ? state->skip : 0); +} + +/* -- see zlib.h -- */ +z_off_t ZEXPORT gztell(file) + gzFile file; +{ + z_off64_t ret; + + ret = gztell64(file); + return ret == (z_off_t)ret ? (z_off_t)ret : -1; +} + +/* -- see zlib.h -- */ +z_off64_t ZEXPORT gzoffset64(file) + gzFile file; +{ + z_off64_t offset; + gz_statep state; + + /* get internal structure and check integrity */ + if (file == NULL) + return -1; + state = (gz_statep)file; + if (state->mode != GZ_READ && state->mode != GZ_WRITE) + return -1; + + /* compute and return effective offset in file */ + offset = LSEEK(state->fd, 0, SEEK_CUR); + if (offset == -1) + return -1; + if (state->mode == GZ_READ) /* reading */ + offset -= state->strm.avail_in; /* don't count buffered input */ + return offset; +} + +/* -- see zlib.h -- */ +z_off_t ZEXPORT gzoffset(file) + gzFile file; +{ + z_off64_t ret; + + ret = gzoffset64(file); + return ret == (z_off_t)ret ? (z_off_t)ret : -1; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzeof(file) + gzFile file; +{ + gz_statep state; + + /* get internal structure and check integrity */ + if (file == NULL) + return 0; + state = (gz_statep)file; + if (state->mode != GZ_READ && state->mode != GZ_WRITE) + return 0; + + /* return end-of-file state */ + return state->mode == GZ_READ ? state->past : 0; +} + +/* -- see zlib.h -- */ +const char * ZEXPORT gzerror(file, errnum) + gzFile file; + int *errnum; +{ + gz_statep state; + + /* get internal structure and check integrity */ + if (file == NULL) + return NULL; + state = (gz_statep)file; + if (state->mode != GZ_READ && state->mode != GZ_WRITE) + return NULL; + + /* return error information */ + if (errnum != NULL) + *errnum = state->err; + return state->msg == NULL ? "" : state->msg; +} + +/* -- see zlib.h -- */ +void ZEXPORT gzclearerr(file) + gzFile file; +{ + gz_statep state; + + /* get internal structure and check integrity */ + if (file == NULL) + return; + state = (gz_statep)file; + if (state->mode != GZ_READ && state->mode != GZ_WRITE) + return; + + /* clear error and end-of-file */ + if (state->mode == GZ_READ) { + state->eof = 0; + state->past = 0; + } + gz_error(state, Z_OK, NULL); +} + +/* Create an error message in allocated memory and set state->err and + state->msg accordingly. Free any previous error message already there. Do + not try to free or allocate space if the error is Z_MEM_ERROR (out of + memory). Simply save the error message as a static string. If there is an + allocation failure constructing the error message, then convert the error to + out of memory. */ +void ZLIB_INTERNAL gz_error(state, err, msg) + gz_statep state; + int err; + const char *msg; +{ + /* free previously allocated message and clear */ + if (state->msg != NULL) { + if (state->err != Z_MEM_ERROR) + free(state->msg); + state->msg = NULL; + } + + /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */ + if (err != Z_OK && err != Z_BUF_ERROR) + state->x.have = 0; + + /* set error code, and if no message, then done */ + state->err = err; + if (msg == NULL) + return; + + /* for an out of memory error, save as static string */ + if (err == Z_MEM_ERROR) { + state->msg = (char *)msg; + return; + } + + /* construct error message with path */ + if ((state->msg = malloc(strlen(state->path) + strlen(msg) + 3)) == NULL) { + state->err = Z_MEM_ERROR; + state->msg = (char *)"out of memory"; + return; + } + strcpy(state->msg, state->path); + strcat(state->msg, ": "); + strcat(state->msg, msg); + return; +} + +#ifndef INT_MAX +/* portably return maximum value for an int (when limits.h presumed not + available) -- we need to do this to cover cases where 2's complement not + used, since C standard permits 1's complement and sign-bit representations, + otherwise we could just use ((unsigned)-1) >> 1 */ +unsigned ZLIB_INTERNAL gz_intmax() +{ + unsigned p, q; + + p = 1; + do { + q = p; + p <<= 1; + p++; + } while (p > q); + return q >> 1; +} +#endif diff --git a/sdk-modifications/libsrc/zlib/gzread.c b/sdk-modifications/libsrc/zlib/gzread.c new file mode 100644 index 0000000..4632e8f --- /dev/null +++ b/sdk-modifications/libsrc/zlib/gzread.c @@ -0,0 +1,584 @@ +/* gzread.c -- zlib functions for reading gzip files + * Copyright (C) 2004, 2005, 2010, 2011 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "gzguts.h" + +/* Local functions */ +local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *)); +local int gz_avail OF((gz_statep)); +local int gz_look OF((gz_statep)); +local int gz_decomp OF((gz_statep)); +local int gz_fetch OF((gz_statep)); +local int gz_skip OF((gz_statep, z_off64_t)); + +/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from + state->fd, and update state->eof, state->err, and state->msg as appropriate. + This function needs to loop on read(), since read() is not guaranteed to + read the number of bytes requested, depending on the type of descriptor. */ +local int gz_load(state, buf, len, have) + gz_statep state; + unsigned char *buf; + unsigned len; + unsigned *have; +{ + int ret; + + *have = 0; + do { + ret = read(state->fd, buf + *have, len - *have); + if (ret <= 0) + break; + *have += ret; + } while (*have < len); + if (ret < 0) { + gz_error(state, Z_ERRNO, "Load Error"); + return -1; + } + if (ret == 0) + state->eof = 1; + return 0; +} + +/* Load up input buffer and set eof flag if last data loaded -- return -1 on + error, 0 otherwise. Note that the eof flag is set when the end of the input + file is reached, even though there may be unused data in the buffer. Once + that data has been used, no more attempts will be made to read the file. + If strm->avail_in != 0, then the current data is moved to the beginning of + the input buffer, and then the remainder of the buffer is loaded with the + available data from the input file. */ +local int gz_avail(state) + gz_statep state; +{ + unsigned got; + z_streamp strm = &(state->strm); + + if (state->err != Z_OK && state->err != Z_BUF_ERROR) + return -1; + if (state->eof == 0) { + if (strm->avail_in) + memmove(state->in, strm->next_in, strm->avail_in); + if (gz_load(state, state->in + strm->avail_in, + state->size - strm->avail_in, &got) == -1) + return -1; + strm->avail_in += got; + strm->next_in = state->in; + } + return 0; +} + +/* Look for gzip header, set up for inflate or copy. state->x.have must be 0. + If this is the first time in, allocate required memory. state->how will be + left unchanged if there is no more input data available, will be set to COPY + if there is no gzip header and direct copying will be performed, or it will + be set to GZIP for decompression. If direct copying, then leftover input + data from the input buffer will be copied to the output buffer. In that + case, all further file reads will be directly to either the output buffer or + a user buffer. If decompressing, the inflate state will be initialized. + gz_look() will return 0 on success or -1 on failure. */ +local int gz_look(state) + gz_statep state; +{ + z_streamp strm = &(state->strm); + + /* allocate read buffers and inflate memory */ + if (state->size == 0) { + /* allocate buffers */ + state->in = malloc(state->want); + state->out = malloc(state->want << 1); + if (state->in == NULL || state->out == NULL) { + if (state->out != NULL) + free(state->out); + if (state->in != NULL) + free(state->in); + gz_error(state, Z_MEM_ERROR, "out of memory"); + return -1; + } + state->size = state->want; + + /* allocate inflate memory */ + state->strm.zalloc = Z_NULL; + state->strm.zfree = Z_NULL; + state->strm.opaque = Z_NULL; + state->strm.avail_in = 0; + state->strm.next_in = Z_NULL; + if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) { /* gunzip */ + free(state->out); + free(state->in); + state->size = 0; + gz_error(state, Z_MEM_ERROR, "out of memory"); + return -1; + } + } + + /* get at least the magic bytes in the input buffer */ + if (strm->avail_in < 2) { + if (gz_avail(state) == -1) + return -1; + if (strm->avail_in == 0) + return 0; + } + + /* look for gzip magic bytes -- if there, do gzip decoding (note: there is + a logical dilemma here when considering the case of a partially written + gzip file, to wit, if a single 31 byte is written, then we cannot tell + whether this is a single-byte file, or just a partially written gzip + file -- for here we assume that if a gzip file is being written, then + the header will be written in a single operation, so that reading a + single byte is sufficient indication that it is not a gzip file) */ + if (strm->avail_in > 1 && + strm->next_in[0] == 31 && strm->next_in[1] == 139) { + inflateReset(strm); + state->how = GZIP; + state->direct = 0; + return 0; + } + + /* no gzip header -- if we were decoding gzip before, then this is trailing + garbage. Ignore the trailing garbage and finish. */ + if (state->direct == 0) { + strm->avail_in = 0; + state->eof = 1; + state->x.have = 0; + return 0; + } + + /* doing raw i/o, copy any leftover input to output -- this assumes that + the output buffer is larger than the input buffer, which also assures + space for gzungetc() */ + state->x.next = state->out; + if (strm->avail_in) { + memcpy(state->x.next, strm->next_in, strm->avail_in); + state->x.have = strm->avail_in; + strm->avail_in = 0; + } + state->how = COPY; + state->direct = 1; + return 0; +} + +/* Decompress from input to the provided next_out and avail_out in the state. + On return, state->x.have and state->x.next point to the just decompressed + data. If the gzip stream completes, state->how is reset to LOOK to look for + the next gzip stream or raw data, once state->x.have is depleted. Returns 0 + on success, -1 on failure. */ +local int gz_decomp(state) + gz_statep state; +{ + int ret = Z_OK; + unsigned had; + z_streamp strm = &(state->strm); + + /* fill output buffer up to end of deflate stream */ + had = strm->avail_out; + do { + /* get more input for inflate() */ + if (strm->avail_in == 0 && gz_avail(state) == -1) + return -1; + if (strm->avail_in == 0) { + gz_error(state, Z_BUF_ERROR, "unexpected end of file"); + break; + } + + /* decompress and handle errors */ + ret = inflate(strm, Z_NO_FLUSH); + if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) { + gz_error(state, Z_STREAM_ERROR, + "internal error: inflate stream corrupt"); + return -1; + } + if (ret == Z_MEM_ERROR) { + gz_error(state, Z_MEM_ERROR, "out of memory"); + return -1; + } + if (ret == Z_DATA_ERROR) { /* deflate stream invalid */ + gz_error(state, Z_DATA_ERROR, + strm->msg == NULL ? "compressed data error" : strm->msg); + return -1; + } + } while (strm->avail_out && ret != Z_STREAM_END); + + /* update available output */ + state->x.have = had - strm->avail_out; + state->x.next = strm->next_out - state->x.have; + + /* if the gzip stream completed successfully, look for another */ + if (ret == Z_STREAM_END) + state->how = LOOK; + + /* good decompression */ + return 0; +} + +/* Fetch data and put it in the output buffer. Assumes state->x.have is 0. + Data is either copied from the input file or decompressed from the input + file depending on state->how. If state->how is LOOK, then a gzip header is + looked for to determine whether to copy or decompress. Returns -1 on error, + otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the + end of the input file has been reached and all data has been processed. */ +local int gz_fetch(state) + gz_statep state; +{ + z_streamp strm = &(state->strm); + + do { + switch(state->how) { + case LOOK: /* -> LOOK, COPY (only if never GZIP), or GZIP */ + if (gz_look(state) == -1) + return -1; + if (state->how == LOOK) + return 0; + break; + case COPY: /* -> COPY */ + if (gz_load(state, state->out, state->size << 1, &(state->x.have)) + == -1) + return -1; + state->x.next = state->out; + return 0; + case GZIP: /* -> GZIP or LOOK (if end of gzip stream) */ + strm->avail_out = state->size << 1; + strm->next_out = state->out; + if (gz_decomp(state) == -1) + return -1; + } + } while (state->x.have == 0 && (!state->eof || strm->avail_in)); + return 0; +} + +/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */ +local int gz_skip(state, len) + gz_statep state; + z_off64_t len; +{ + unsigned n; + + /* skip over len bytes or reach end-of-file, whichever comes first */ + while (len) + /* skip over whatever is in output buffer */ + if (state->x.have) { + n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ? + (unsigned)len : state->x.have; + state->x.have -= n; + state->x.next += n; + state->x.pos += n; + len -= n; + } + + /* output buffer empty -- return if we're at the end of the input */ + else if (state->eof && state->strm.avail_in == 0) + break; + + /* need more data to skip -- load up output buffer */ + else { + /* get more output, looking for header if required */ + if (gz_fetch(state) == -1) + return -1; + } + return 0; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzread(file, buf, len) + gzFile file; + voidp buf; + unsigned len; +{ + unsigned got, n; + gz_statep state; + z_streamp strm; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + strm = &(state->strm); + + /* check that we're reading and that there's no (serious) error */ + if (state->mode != GZ_READ || + (state->err != Z_OK && state->err != Z_BUF_ERROR)) + return -1; + + /* since an int is returned, make sure len fits in one, otherwise return + with an error (this avoids the flaw in the interface) */ + if ((int)len < 0) { + gz_error(state, Z_DATA_ERROR, "requested length does not fit in int"); + return -1; + } + + /* if len is zero, avoid unnecessary operations */ + if (len == 0) + return 0; + + /* process a skip request */ + if (state->seek) { + state->seek = 0; + if (gz_skip(state, state->skip) == -1) + return -1; + } + + /* get len bytes to buf, or less than len if at the end */ + got = 0; + do { + /* first just try copying data from the output buffer */ + if (state->x.have) { + n = state->x.have > len ? len : state->x.have; + memcpy(buf, state->x.next, n); + state->x.next += n; + state->x.have -= n; + } + + /* output buffer empty -- return if we're at the end of the input */ + else if (state->eof && strm->avail_in == 0) { + state->past = 1; /* tried to read past end */ + break; + } + + /* need output data -- for small len or new stream load up our output + buffer */ + else if (state->how == LOOK || len < (state->size << 1)) { + /* get more output, looking for header if required */ + if (gz_fetch(state) == -1) + return -1; + continue; /* no progress yet -- go back to memcpy() above */ + /* the copy above assures that we will leave with space in the + output buffer, allowing at least one gzungetc() to succeed */ + } + + /* large len -- read directly into user buffer */ + else if (state->how == COPY) { /* read directly */ + if (gz_load(state, buf, len, &n) == -1) + return -1; + } + + /* large len -- decompress directly into user buffer */ + else { /* state->how == GZIP */ + strm->avail_out = len; + strm->next_out = buf; + if (gz_decomp(state) == -1) + return -1; + n = state->x.have; + state->x.have = 0; + } + + /* update progress */ + len -= n; + buf = (char *)buf + n; + got += n; + state->x.pos += n; + } while (len); + + /* return number of bytes read into user buffer (will fit in int) */ + return (int)got; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzgetc_(file) + gzFile file; +{ + int ret; + unsigned char buf[1]; + gz_statep state; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + + /* check that we're reading and that there's no (serious) error */ + if (state->mode != GZ_READ || + (state->err != Z_OK && state->err != Z_BUF_ERROR)) + return -1; + + /* try output buffer (no need to check for skip request) */ + if (state->x.have) { + state->x.have--; + state->x.pos++; + return *(state->x.next)++; + } + + /* nothing there -- try gzread() */ + ret = gzread(file, buf, 1); + return ret < 1 ? -1 : buf[0]; +} + +#undef gzgetc +int ZEXPORT gzgetc(file) +gzFile file; +{ + return gzgetc_(file); +} + +/* -- see zlib.h -- */ +int ZEXPORT gzungetc(c, file) + int c; + gzFile file; +{ + gz_statep state; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + + /* check that we're reading and that there's no (serious) error */ + if (state->mode != GZ_READ || + (state->err != Z_OK && state->err != Z_BUF_ERROR)) + return -1; + + /* process a skip request */ + if (state->seek) { + state->seek = 0; + if (gz_skip(state, state->skip) == -1) + return -1; + } + + /* can't push EOF */ + if (c < 0) + return -1; + + /* if output buffer empty, put byte at end (allows more pushing) */ + if (state->x.have == 0) { + state->x.have = 1; + state->x.next = state->out + (state->size << 1) - 1; + state->x.next[0] = c; + state->x.pos--; + state->past = 0; + return c; + } + + /* if no room, give up (must have already done a gzungetc()) */ + if (state->x.have == (state->size << 1)) { + gz_error(state, Z_DATA_ERROR, "out of room to push characters"); + return -1; + } + + /* slide output data if needed and insert byte before existing data */ + if (state->x.next == state->out) { + unsigned char *src = state->out + state->x.have; + unsigned char *dest = state->out + (state->size << 1); + while (src > state->out) + *--dest = *--src; + state->x.next = dest; + } + state->x.have++; + state->x.next--; + state->x.next[0] = c; + state->x.pos--; + state->past = 0; + return c; +} + +/* -- see zlib.h -- */ +char * ZEXPORT gzgets(file, buf, len) + gzFile file; + char *buf; + int len; +{ + unsigned left, n; + char *str; + unsigned char *eol; + gz_statep state; + + /* check parameters and get internal structure */ + if (file == NULL || buf == NULL || len < 1) + return NULL; + state = (gz_statep)file; + + /* check that we're reading and that there's no (serious) error */ + if (state->mode != GZ_READ || + (state->err != Z_OK && state->err != Z_BUF_ERROR)) + return NULL; + + /* process a skip request */ + if (state->seek) { + state->seek = 0; + if (gz_skip(state, state->skip) == -1) + return NULL; + } + + /* copy output bytes up to new line or len - 1, whichever comes first -- + append a terminating zero to the string (we don't check for a zero in + the contents, let the user worry about that) */ + str = buf; + left = (unsigned)len - 1; + if (left) do { + /* assure that something is in the output buffer */ + if (state->x.have == 0 && gz_fetch(state) == -1) + return NULL; /* error */ + if (state->x.have == 0) { /* end of file */ + state->past = 1; /* read past end */ + break; /* return what we have */ + } + + /* look for end-of-line in current output buffer */ + n = state->x.have > left ? left : state->x.have; + eol = (char*)memchr(state->x.next, '\n', n); + if (eol != NULL) + n = (unsigned)(eol - state->x.next) + 1; + + /* copy through end-of-line, or remainder if not found */ + memcpy(buf, state->x.next, n); + state->x.have -= n; + state->x.next += n; + state->x.pos += n; + left -= n; + buf += n; + } while (left && eol == NULL); + + /* return terminated string, or if nothing, end of file */ + if (buf == str) + return NULL; + buf[0] = 0; + return str; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzdirect(file) + gzFile file; +{ + gz_statep state; + + /* get internal structure */ + if (file == NULL) + return 0; + state = (gz_statep)file; + + /* if the state is not known, but we can find out, then do so (this is + mainly for right after a gzopen() or gzdopen()) */ + if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0) + (void)gz_look(state); + + /* return 1 if transparent, 0 if processing a gzip stream */ + return state->direct; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzclose_r(file) + gzFile file; +{ + int ret, err; + gz_statep state; + + /* get internal structure */ + if (file == NULL) + return Z_STREAM_ERROR; + state = (gz_statep)file; + + /* check that we're reading */ + if (state->mode != GZ_READ) + return Z_STREAM_ERROR; + + /* free memory and close file */ + if (state->size) { + inflateEnd(&(state->strm)); + free(state->out); + free(state->in); + } + err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK; + gz_error(state, Z_OK, NULL); + free(state->path); + ret = close(state->fd); + free(state); + return ret ? Z_ERRNO : err; +} diff --git a/sdk-modifications/libsrc/zlib/gzwrite.c b/sdk-modifications/libsrc/zlib/gzwrite.c new file mode 100644 index 0000000..c346a64 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/gzwrite.c @@ -0,0 +1,593 @@ +/* gzwrite.c -- zlib functions for writing gzip files + * Copyright (C) 2004, 2005, 2010, 2011, 2012 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "gzguts.h" + +/* Local functions */ +local int gz_init OF((gz_statep)); +local int gz_comp OF((gz_statep, int)); +local int gz_zero OF((gz_statep, z_off64_t)); + +/* Initialize state for writing a gzip file. Mark initialization by setting + state->size to non-zero. Return -1 on failure or 0 on success. */ +local int gz_init(state) + gz_statep state; +{ + int ret; + z_streamp strm = &(state->strm); + + /* allocate input buffer */ + state->in = malloc(state->want); + if (state->in == NULL) { + gz_error(state, Z_MEM_ERROR, "out of memory"); + return -1; + } + + /* only need output buffer and deflate state if compressing */ + if (!state->direct) { + /* allocate output buffer */ + state->out = malloc(state->want); + if (state->out == NULL) { + free(state->in); + gz_error(state, Z_MEM_ERROR, "out of memory"); + return -1; + } + + /* allocate deflate memory, set up for gzip compression */ + strm->zalloc = Z_NULL; + strm->zfree = Z_NULL; + strm->opaque = Z_NULL; + ret = deflateInit2(strm, state->level, Z_DEFLATED, + MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy); + if (ret != Z_OK) { + free(state->out); + free(state->in); + gz_error(state, Z_MEM_ERROR, "out of memory"); + return -1; + } + } + + /* mark state as initialized */ + state->size = state->want; + + /* initialize write buffer if compressing */ + if (!state->direct) { + strm->avail_out = state->size; + strm->next_out = state->out; + state->x.next = strm->next_out; + } + return 0; +} + +/* Compress whatever is at avail_in and next_in and write to the output file. + Return -1 if there is an error writing to the output file, otherwise 0. + flush is assumed to be a valid deflate() flush value. If flush is Z_FINISH, + then the deflate() state is reset to start a new gzip stream. If gz->direct + is true, then simply write to the output file without compressing, and + ignore flush. */ +local int gz_comp(state, flush) + gz_statep state; + int flush; +{ + int ret, got; + unsigned have; + z_streamp strm = &(state->strm); + + /* allocate memory if this is the first time through */ + if (state->size == 0 && gz_init(state) == -1) + return -1; + + /* write directly if requested */ + if (state->direct) { + got = write(state->fd, strm->next_in, strm->avail_in); + if (got < 0 || (unsigned)got != strm->avail_in) { + gz_error(state, Z_ERRNO, "Write Error"); + return -1; + } + strm->avail_in = 0; + return 0; + } + + /* run deflate() on provided input until it produces no more output */ + ret = Z_OK; + do { + /* write out current buffer contents if full, or if flushing, but if + doing Z_FINISH then don't write until we get to Z_STREAM_END */ + if (strm->avail_out == 0 || (flush != Z_NO_FLUSH && + (flush != Z_FINISH || ret == Z_STREAM_END))) { + have = (unsigned)(strm->next_out - state->x.next); + if (have && ((got = write(state->fd, state->x.next, have)) < 0 || + (unsigned)got != have)) { + gz_error(state, Z_ERRNO, "Flush Error"); + return -1; + } + if (strm->avail_out == 0) { + strm->avail_out = state->size; + strm->next_out = state->out; + } + state->x.next = strm->next_out; + } + + /* compress */ + have = strm->avail_out; + ret = deflate(strm, flush); + if (ret == Z_STREAM_ERROR) { + gz_error(state, Z_STREAM_ERROR, + "internal error: deflate stream corrupt"); + return -1; + } + have -= strm->avail_out; + } while (have); + + /* if that completed a deflate stream, allow another to start */ + if (flush == Z_FINISH) + deflateReset(strm); + + /* all done, no errors */ + return 0; +} + +/* Compress len zeros to output. Return -1 on error, 0 on success. */ +local int gz_zero(state, len) + gz_statep state; + z_off64_t len; +{ + int first; + unsigned n; + z_streamp strm = &(state->strm); + + /* consume whatever's left in the input buffer */ + if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1) + return -1; + + /* compress len zeros (len guaranteed > 0) */ + first = 1; + while (len) { + n = GT_OFF(state->size) || (z_off64_t)state->size > len ? + (unsigned)len : state->size; + if (first) { + memset(state->in, 0, n); + first = 0; + } + strm->avail_in = n; + strm->next_in = state->in; + state->x.pos += n; + if (gz_comp(state, Z_NO_FLUSH) == -1) + return -1; + len -= n; + } + return 0; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzwrite(file, buf, len) + gzFile file; + voidpc buf; + unsigned len; +{ + unsigned put = len; + unsigned n; + gz_statep state; + z_streamp strm; + + /* get internal structure */ + if (file == NULL) + return 0; + state = (gz_statep)file; + strm = &(state->strm); + + /* check that we're writing and that there's no error */ + if (state->mode != GZ_WRITE || state->err != Z_OK) + return 0; + + /* since an int is returned, make sure len fits in one, otherwise return + with an error (this avoids the flaw in the interface) */ + if ((int)len < 0) { + gz_error(state, Z_DATA_ERROR, "requested length does not fit in int"); + return 0; + } + + /* if len is zero, avoid unnecessary operations */ + if (len == 0) + return 0; + + /* allocate memory if this is the first time through */ + if (state->size == 0 && gz_init(state) == -1) + return 0; + + /* check for seek request */ + if (state->seek) { + state->seek = 0; + if (gz_zero(state, state->skip) == -1) + return 0; + } + + /* for small len, copy to input buffer, otherwise compress directly */ + if (len < state->size) { + /* copy to input buffer, compress when full */ + do { + if (strm->avail_in == 0) + strm->next_in = state->in; + n = state->size - strm->avail_in; + if (n > len) + n = len; + memcpy(strm->next_in + strm->avail_in, buf, n); + strm->avail_in += n; + state->x.pos += n; + buf = (char *)buf + n; + len -= n; + if (len && gz_comp(state, Z_NO_FLUSH) == -1) + return 0; + } while (len); + } + else { + /* consume whatever's left in the input buffer */ + if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1) + return 0; + + /* directly compress user buffer to file */ + strm->avail_in = len; + strm->next_in = (voidp)buf; + state->x.pos += len; + if (gz_comp(state, Z_NO_FLUSH) == -1) + return 0; + } + + /* input was all buffered or compressed (put will fit in int) */ + return (int)put; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzputc(file, c) + gzFile file; + int c; +{ + unsigned char buf[1]; + gz_statep state; + z_streamp strm; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + strm = &(state->strm); + + /* check that we're writing and that there's no error */ + if (state->mode != GZ_WRITE || state->err != Z_OK) + return -1; + + /* check for seek request */ + if (state->seek) { + state->seek = 0; + if (gz_zero(state, state->skip) == -1) + return -1; + } + + /* try writing to input buffer for speed (state->size == 0 if buffer not + initialized) */ + if (strm->avail_in < state->size) { + if (strm->avail_in == 0) + strm->next_in = state->in; + strm->next_in[strm->avail_in++] = c; + state->x.pos++; + return c & 0xff; + } + + /* no room in buffer or not initialized, use gz_write() */ + buf[0] = c; + if (gzwrite(file, buf, 1) != 1) + return -1; + return c & 0xff; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzputs(file, str) + gzFile file; + const char *str; +{ + int ret; + unsigned len; + + /* write string */ + len = (unsigned)strlen(str); + ret = gzwrite(file, str, len); + return ret == 0 && len != 0 ? -1 : ret; +} + +#if defined(STDC) || defined(Z_HAVE_STDARG_H) +#include <stdarg.h> + +/* -- see zlib.h -- */ +int ZEXPORTVA gzprintf (gzFile file, const char *format, ...) +{ + int size, len; + gz_statep state; + z_streamp strm; + va_list va; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + strm = &(state->strm); + + /* check that we're writing and that there's no error */ + if (state->mode != GZ_WRITE || state->err != Z_OK) + return 0; + + /* make sure we have some buffer space */ + if (state->size == 0 && gz_init(state) == -1) + return 0; + + /* check for seek request */ + if (state->seek) { + state->seek = 0; + if (gz_zero(state, state->skip) == -1) + return 0; + } + + /* consume whatever's left in the input buffer */ + if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1) + return 0; + + /* do the printf() into the input buffer, put length in len */ + size = (int)(state->size); + state->in[size - 1] = 0; + va_start(va, format); +#ifdef NO_vsnprintf +# ifdef HAS_vsprintf_void + (void)vsprintf(state->in, format, va); + va_end(va); + for (len = 0; len < size; len++) + if (state->in[len] == 0) break; +# else + len = vsprintf(state->in, format, va); + va_end(va); +# endif +#else +# ifdef HAS_vsnprintf_void + (void)vsnprintf(state->in, size, format, va); + va_end(va); + len = strlen(state->in); +# else + len = vsnprintf((char *)(state->in), size, format, va); + va_end(va); +# endif +#endif + + /* check that printf() results fit in buffer */ + if (len <= 0 || len >= (int)size || state->in[size - 1] != 0) + return 0; + + /* update buffer and position, defer compression until needed */ + strm->avail_in = (unsigned)len; + strm->next_in = state->in; + state->x.pos += len; + return len; +} + +#else /* !STDC && !Z_HAVE_STDARG_H */ + +/* -- see zlib.h -- */ +int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, + a11, a12, a13, a14, a15, a16, a17, a18, a19, a20) + gzFile file; + const char *format; + int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, + a11, a12, a13, a14, a15, a16, a17, a18, a19, a20; +{ + int size, len; + gz_statep state; + z_streamp strm; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + strm = &(state->strm); + + /* check that can really pass pointer in ints */ + if (sizeof(int) != sizeof(void *)) + return 0; + + /* check that we're writing and that there's no error */ + if (state->mode != GZ_WRITE || state->err != Z_OK) + return 0; + + /* make sure we have some buffer space */ + if (state->size == 0 && gz_init(state) == -1) + return 0; + + /* check for seek request */ + if (state->seek) { + state->seek = 0; + if (gz_zero(state, state->skip) == -1) + return 0; + } + + /* consume whatever's left in the input buffer */ + if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1) + return 0; + + /* do the printf() into the input buffer, put length in len */ + size = (int)(state->size); + state->in[size - 1] = 0; +#ifdef NO_snprintf +# ifdef HAS_sprintf_void + sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8, + a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); + for (len = 0; len < size; len++) + if (state->in[len] == 0) break; +# else + len = sprintf(state->in, format, a1, a2, a3, a4, a5, a6, a7, a8, + a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); +# endif +#else +# ifdef HAS_snprintf_void + snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8, + a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); + len = strlen(state->in); +# else + len = snprintf(state->in, size, format, a1, a2, a3, a4, a5, a6, a7, a8, + a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20); +# endif +#endif + + /* check that printf() results fit in buffer */ + if (len <= 0 || len >= (int)size || state->in[size - 1] != 0) + return 0; + + /* update buffer and position, defer compression until needed */ + strm->avail_in = (unsigned)len; + strm->next_in = state->in; + state->x.pos += len; + return len; +} + +#endif + +/* -- see zlib.h -- */ +int ZEXPORT gzflush(file, flush) + gzFile file; + int flush; +{ + gz_statep state; + + /* get internal structure */ + if (file == NULL) + return -1; + state = (gz_statep)file; + + /* check that we're writing and that there's no error */ + if (state->mode != GZ_WRITE || state->err != Z_OK) + return Z_STREAM_ERROR; + + /* check flush parameter */ + if (flush < 0 || flush > Z_FINISH) + return Z_STREAM_ERROR; + + /* check for seek request */ + if (state->seek) { + state->seek = 0; + if (gz_zero(state, state->skip) == -1) + return -1; + } + + /* compress remaining data with requested flush */ + gz_comp(state, flush); + return state->err; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzsetparams(file, level, strategy) + gzFile file; + int level; + int strategy; +{ + gz_statep state; + z_streamp strm; + + /* get internal structure */ + if (file == NULL) + return Z_STREAM_ERROR; + state = (gz_statep)file; + strm = &(state->strm); + + /* check that we're writing and that there's no error */ + if (state->mode != GZ_WRITE || state->err != Z_OK) + return Z_STREAM_ERROR; + + /* if no change is requested, then do nothing */ + if (level == state->level && strategy == state->strategy) + return Z_OK; + + /* check for seek request */ + if (state->seek) { + state->seek = 0; + if (gz_zero(state, state->skip) == -1) + return -1; + } + + /* change compression parameters for subsequent input */ + if (state->size) { + /* flush previous input with previous parameters before changing */ + if (strm->avail_in && gz_comp(state, Z_PARTIAL_FLUSH) == -1) + return state->err; + deflateParams(strm, level, strategy); + } + state->level = level; + state->strategy = strategy; + return Z_OK; +} + +/* -- see zlib.h -- */ +int ZEXPORT gzclose_w(file) + gzFile file; +{ + int ret = Z_OK; + gz_statep state; + + /* get internal structure */ + if (file == NULL) + return Z_STREAM_ERROR; + state = (gz_statep)file; + + /* check that we're writing */ + if (state->mode != GZ_WRITE) + return Z_STREAM_ERROR; + + /* check for seek request */ + if (state->seek) { + state->seek = 0; + if (gz_zero(state, state->skip) == -1) + ret = state->err; + } + + /* flush, free memory, and close file */ + if (gz_comp(state, Z_FINISH) == -1) + ret = state->err; + if (!state->direct) { + (void)deflateEnd(&(state->strm)); + free(state->out); + } + free(state->in); + gz_error(state, Z_OK, NULL); + free(state->path); + if (close(state->fd) == -1) + ret = Z_ERRNO; + free(state); + return ret; +} + +/* used by zlibVersion() to get the vsnprintf story from the horse's mouth */ +unsigned long ZEXPORT gzflags() +{ + unsigned long flags = 0; +#if defined(STDC) || defined(Z_HAVE_STDARG_H) +# ifdef NO_vsnprintf + flags += 1L << 25; +# ifdef HAS_vsprintf_void + flags += 1L << 26; +# endif +# else +# ifdef HAS_vsnprintf_void + flags += 1L << 26; +# endif +# endif +#else + flags += 1L << 24; +# ifdef NO_snprintf + flags += 1L << 25; +# ifdef HAS_sprintf_void + flags += 1L << 26; +# endif +# else +# ifdef HAS_snprintf_void + flags += 1L << 26; +# endif +# endif +#endif + return flags; +} diff --git a/sdk-modifications/libsrc/zlib/infback.c b/sdk-modifications/libsrc/zlib/infback.c new file mode 100644 index 0000000..981aff1 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/infback.c @@ -0,0 +1,640 @@ +/* infback.c -- inflate using a call-back interface + * Copyright (C) 1995-2011 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* + This code is largely copied from inflate.c. Normally either infback.o or + inflate.o would be linked into an application--not both. The interface + with inffast.c is retained so that optimized assembler-coded versions of + inflate_fast() can be used with either inflate.c or infback.c. + */ + +#include "zutil.h" +#include "inftrees.h" +#include "inflate.h" +#include "inffast.h" + +/* function prototypes */ +local void fixedtables OF((struct inflate_state FAR *state)); + +/* + strm provides memory allocation functions in zalloc and zfree, or + Z_NULL to use the library memory allocation functions. + + windowBits is in the range 8..15, and window is a user-supplied + window and output buffer that is 2**windowBits bytes. + */ +int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size) +z_streamp strm; +int windowBits; +unsigned char FAR *window; +const char *version; +int stream_size; +{ + struct inflate_state FAR *state; + + if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || + stream_size != (int)(sizeof(z_stream))) + return Z_VERSION_ERROR; + if (strm == Z_NULL || window == Z_NULL || + windowBits < 8 || windowBits > 15) + return Z_STREAM_ERROR; + strm->msg = Z_NULL; /* in case we return an error */ + if (strm->zalloc == (alloc_func)0) { +#ifdef Z_SOLO + return Z_STREAM_ERROR; +#else + strm->zalloc = zcalloc; + strm->opaque = (voidpf)0; +#endif + } + if (strm->zfree == (free_func)0) +#ifdef Z_SOLO + return Z_STREAM_ERROR; +#else + strm->zfree = zcfree; +#endif + state = (struct inflate_state FAR *)ZALLOC(strm, 1, + sizeof(struct inflate_state)); + if (state == Z_NULL) return Z_MEM_ERROR; + Tracev((stderr, "inflate: allocated\n")); + strm->state = (struct internal_state FAR *)state; + state->dmax = 32768U; + state->wbits = windowBits; + state->wsize = 1U << windowBits; + state->window = window; + state->wnext = 0; + state->whave = 0; + return Z_OK; +} + +/* + Return state with length and distance decoding tables and index sizes set to + fixed code decoding. Normally this returns fixed tables from inffixed.h. + If BUILDFIXED is defined, then instead this routine builds the tables the + first time it's called, and returns those tables the first time and + thereafter. This reduces the size of the code by about 2K bytes, in + exchange for a little execution time. However, BUILDFIXED should not be + used for threaded applications, since the rewriting of the tables and virgin + may not be thread-safe. + */ +local void fixedtables(state) +struct inflate_state FAR *state; +{ +#ifdef BUILDFIXED + static int virgin = 1; + static code *lenfix, *distfix; + static code fixed[544]; + + /* build fixed huffman tables if first call (may not be thread safe) */ + if (virgin) { + unsigned sym, bits; + static code *next; + + /* literal/length table */ + sym = 0; + while (sym < 144) state->lens[sym++] = 8; + while (sym < 256) state->lens[sym++] = 9; + while (sym < 280) state->lens[sym++] = 7; + while (sym < 288) state->lens[sym++] = 8; + next = fixed; + lenfix = next; + bits = 9; + inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); + + /* distance table */ + sym = 0; + while (sym < 32) state->lens[sym++] = 5; + distfix = next; + bits = 5; + inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); + + /* do this just once */ + virgin = 0; + } +#else /* !BUILDFIXED */ +# include "inffixed.h" +#endif /* BUILDFIXED */ + state->lencode = lenfix; + state->lenbits = 9; + state->distcode = distfix; + state->distbits = 5; +} + +/* Macros for inflateBack(): */ + +/* Load returned state from inflate_fast() */ +#define LOAD() \ + do { \ + put = strm->next_out; \ + left = strm->avail_out; \ + next = strm->next_in; \ + have = strm->avail_in; \ + hold = state->hold; \ + bits = state->bits; \ + } while (0) + +/* Set state from registers for inflate_fast() */ +#define RESTORE() \ + do { \ + strm->next_out = put; \ + strm->avail_out = left; \ + strm->next_in = next; \ + strm->avail_in = have; \ + state->hold = hold; \ + state->bits = bits; \ + } while (0) + +/* Clear the input bit accumulator */ +#define INITBITS() \ + do { \ + hold = 0; \ + bits = 0; \ + } while (0) + +/* Assure that some input is available. If input is requested, but denied, + then return a Z_BUF_ERROR from inflateBack(). */ +#define PULL() \ + do { \ + if (have == 0) { \ + have = in(in_desc, &next); \ + if (have == 0) { \ + next = Z_NULL; \ + ret = Z_BUF_ERROR; \ + goto inf_leave; \ + } \ + } \ + } while (0) + +/* Get a byte of input into the bit accumulator, or return from inflateBack() + with an error if there is no input available. */ +#define PULLBYTE() \ + do { \ + PULL(); \ + have--; \ + hold += (unsigned long)(*next++) << bits; \ + bits += 8; \ + } while (0) + +/* Assure that there are at least n bits in the bit accumulator. If there is + not enough available input to do that, then return from inflateBack() with + an error. */ +#define NEEDBITS(n) \ + do { \ + while (bits < (unsigned)(n)) \ + PULLBYTE(); \ + } while (0) + +/* Return the low n bits of the bit accumulator (n < 16) */ +#define BITS(n) \ + ((unsigned)hold & ((1U << (n)) - 1)) + +/* Remove n bits from the bit accumulator */ +#define DROPBITS(n) \ + do { \ + hold >>= (n); \ + bits -= (unsigned)(n); \ + } while (0) + +/* Remove zero to seven bits as needed to go to a byte boundary */ +#define BYTEBITS() \ + do { \ + hold >>= bits & 7; \ + bits -= bits & 7; \ + } while (0) + +/* Assure that some output space is available, by writing out the window + if it's full. If the write fails, return from inflateBack() with a + Z_BUF_ERROR. */ +#define ROOM() \ + do { \ + if (left == 0) { \ + put = state->window; \ + left = state->wsize; \ + state->whave = left; \ + if (out(out_desc, put, left)) { \ + ret = Z_BUF_ERROR; \ + goto inf_leave; \ + } \ + } \ + } while (0) + +/* + strm provides the memory allocation functions and window buffer on input, + and provides information on the unused input on return. For Z_DATA_ERROR + returns, strm will also provide an error message. + + in() and out() are the call-back input and output functions. When + inflateBack() needs more input, it calls in(). When inflateBack() has + filled the window with output, or when it completes with data in the + window, it calls out() to write out the data. The application must not + change the provided input until in() is called again or inflateBack() + returns. The application must not change the window/output buffer until + inflateBack() returns. + + in() and out() are called with a descriptor parameter provided in the + inflateBack() call. This parameter can be a structure that provides the + information required to do the read or write, as well as accumulated + information on the input and output such as totals and check values. + + in() should return zero on failure. out() should return non-zero on + failure. If either in() or out() fails, than inflateBack() returns a + Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it + was in() or out() that caused in the error. Otherwise, inflateBack() + returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format + error, or Z_MEM_ERROR if it could not allocate memory for the state. + inflateBack() can also return Z_STREAM_ERROR if the input parameters + are not correct, i.e. strm is Z_NULL or the state was not initialized. + */ +int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc) +z_streamp strm; +in_func in; +void FAR *in_desc; +out_func out; +void FAR *out_desc; +{ + struct inflate_state FAR *state; + unsigned char FAR *next; /* next input */ + unsigned char FAR *put; /* next output */ + unsigned have, left; /* available input and output */ + unsigned long hold; /* bit buffer */ + unsigned bits; /* bits in bit buffer */ + unsigned copy; /* number of stored or match bytes to copy */ + unsigned char FAR *from; /* where to copy match bytes from */ + code here; /* current decoding table entry */ + code last; /* parent table entry */ + unsigned len; /* length to copy for repeats, bits to drop */ + int ret; /* return code */ + static const unsigned short order[19] = /* permutation of code lengths */ + {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; + + /* Check that the strm exists and that the state was initialized */ + if (strm == Z_NULL || strm->state == Z_NULL) + return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + + /* Reset the state */ + strm->msg = Z_NULL; + state->mode = TYPE; + state->last = 0; + state->whave = 0; + next = strm->next_in; + have = next != Z_NULL ? strm->avail_in : 0; + hold = 0; + bits = 0; + put = state->window; + left = state->wsize; + + /* Inflate until end of block marked as last */ + for (;;) + switch (state->mode) { + case TYPE: + /* determine and dispatch block type */ + if (state->last) { + BYTEBITS(); + state->mode = DONE; + break; + } + NEEDBITS(3); + state->last = BITS(1); + DROPBITS(1); + switch (BITS(2)) { + case 0: /* stored block */ + Tracev((stderr, "inflate: stored block%s\n", + state->last ? " (last)" : "")); + state->mode = STORED; + break; + case 1: /* fixed block */ + fixedtables(state); + Tracev((stderr, "inflate: fixed codes block%s\n", + state->last ? " (last)" : "")); + state->mode = LEN; /* decode codes */ + break; + case 2: /* dynamic block */ + Tracev((stderr, "inflate: dynamic codes block%s\n", + state->last ? " (last)" : "")); + state->mode = TABLE; + break; + case 3: + strm->msg = (char *)"invalid block type"; + state->mode = BAD; + } + DROPBITS(2); + break; + + case STORED: + /* get and verify stored block length */ + BYTEBITS(); /* go to byte boundary */ + NEEDBITS(32); + if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { + strm->msg = (char *)"invalid stored block lengths"; + state->mode = BAD; + break; + } + state->length = (unsigned)hold & 0xffff; + Tracev((stderr, "inflate: stored length %u\n", + state->length)); + INITBITS(); + + /* copy stored block from input to output */ + while (state->length != 0) { + copy = state->length; + PULL(); + ROOM(); + if (copy > have) copy = have; + if (copy > left) copy = left; + zmemcpy(put, next, copy); + have -= copy; + next += copy; + left -= copy; + put += copy; + state->length -= copy; + } + Tracev((stderr, "inflate: stored end\n")); + state->mode = TYPE; + break; + + case TABLE: + /* get dynamic table entries descriptor */ + NEEDBITS(14); + state->nlen = BITS(5) + 257; + DROPBITS(5); + state->ndist = BITS(5) + 1; + DROPBITS(5); + state->ncode = BITS(4) + 4; + DROPBITS(4); +#ifndef PKZIP_BUG_WORKAROUND + if (state->nlen > 286 || state->ndist > 30) { + strm->msg = (char *)"too many length or distance symbols"; + state->mode = BAD; + break; + } +#endif + Tracev((stderr, "inflate: table sizes ok\n")); + + /* get code length code lengths (not a typo) */ + state->have = 0; + while (state->have < state->ncode) { + NEEDBITS(3); + state->lens[order[state->have++]] = (unsigned short)BITS(3); + DROPBITS(3); + } + while (state->have < 19) + state->lens[order[state->have++]] = 0; + state->next = state->codes; + state->lencode = (code const FAR *)(state->next); + state->lenbits = 7; + ret = inflate_table(CODES, state->lens, 19, &(state->next), + &(state->lenbits), state->work); + if (ret) { + strm->msg = (char *)"invalid code lengths set"; + state->mode = BAD; + break; + } + Tracev((stderr, "inflate: code lengths ok\n")); + + /* get length and distance code code lengths */ + state->have = 0; + while (state->have < state->nlen + state->ndist) { + for (;;) { + here = state->lencode[BITS(state->lenbits)]; + if ((unsigned)(here.bits) <= bits) break; + PULLBYTE(); + } + if (here.val < 16) { + DROPBITS(here.bits); + state->lens[state->have++] = here.val; + } + else { + if (here.val == 16) { + NEEDBITS(here.bits + 2); + DROPBITS(here.bits); + if (state->have == 0) { + strm->msg = (char *)"invalid bit length repeat"; + state->mode = BAD; + break; + } + len = (unsigned)(state->lens[state->have - 1]); + copy = 3 + BITS(2); + DROPBITS(2); + } + else if (here.val == 17) { + NEEDBITS(here.bits + 3); + DROPBITS(here.bits); + len = 0; + copy = 3 + BITS(3); + DROPBITS(3); + } + else { + NEEDBITS(here.bits + 7); + DROPBITS(here.bits); + len = 0; + copy = 11 + BITS(7); + DROPBITS(7); + } + if (state->have + copy > state->nlen + state->ndist) { + strm->msg = (char *)"invalid bit length repeat"; + state->mode = BAD; + break; + } + while (copy--) + state->lens[state->have++] = (unsigned short)len; + } + } + + /* handle error breaks in while */ + if (state->mode == BAD) break; + + /* check for end-of-block code (better have one) */ + if (state->lens[256] == 0) { + strm->msg = (char *)"invalid code -- missing end-of-block"; + state->mode = BAD; + break; + } + + /* build code tables -- note: do not change the lenbits or distbits + values here (9 and 6) without reading the comments in inftrees.h + concerning the ENOUGH constants, which depend on those values */ + state->next = state->codes; + state->lencode = (code const FAR *)(state->next); + state->lenbits = 9; + ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), + &(state->lenbits), state->work); + if (ret) { + strm->msg = (char *)"invalid literal/lengths set"; + state->mode = BAD; + break; + } + state->distcode = (code const FAR *)(state->next); + state->distbits = 6; + ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, + &(state->next), &(state->distbits), state->work); + if (ret) { + strm->msg = (char *)"invalid distances set"; + state->mode = BAD; + break; + } + Tracev((stderr, "inflate: codes ok\n")); + state->mode = LEN; + + case LEN: + /* use inflate_fast() if we have enough input and output */ + if (have >= 6 && left >= 258) { + RESTORE(); + if (state->whave < state->wsize) + state->whave = state->wsize - left; + inflate_fast(strm, state->wsize); + LOAD(); + break; + } + + /* get a literal, length, or end-of-block code */ + for (;;) { + here = state->lencode[BITS(state->lenbits)]; + if ((unsigned)(here.bits) <= bits) break; + PULLBYTE(); + } + if (here.op && (here.op & 0xf0) == 0) { + last = here; + for (;;) { + here = state->lencode[last.val + + (BITS(last.bits + last.op) >> last.bits)]; + if ((unsigned)(last.bits + here.bits) <= bits) break; + PULLBYTE(); + } + DROPBITS(last.bits); + } + DROPBITS(here.bits); + state->length = (unsigned)here.val; + + /* process literal */ + if (here.op == 0) { + Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? + "inflate: literal '%c'\n" : + "inflate: literal 0x%02x\n", here.val)); + ROOM(); + *put++ = (unsigned char)(state->length); + left--; + state->mode = LEN; + break; + } + + /* process end of block */ + if (here.op & 32) { + Tracevv((stderr, "inflate: end of block\n")); + state->mode = TYPE; + break; + } + + /* invalid code */ + if (here.op & 64) { + strm->msg = (char *)"invalid literal/length code"; + state->mode = BAD; + break; + } + + /* length code -- get extra bits, if any */ + state->extra = (unsigned)(here.op) & 15; + if (state->extra != 0) { + NEEDBITS(state->extra); + state->length += BITS(state->extra); + DROPBITS(state->extra); + } + Tracevv((stderr, "inflate: length %u\n", state->length)); + + /* get distance code */ + for (;;) { + here = state->distcode[BITS(state->distbits)]; + if ((unsigned)(here.bits) <= bits) break; + PULLBYTE(); + } + if ((here.op & 0xf0) == 0) { + last = here; + for (;;) { + here = state->distcode[last.val + + (BITS(last.bits + last.op) >> last.bits)]; + if ((unsigned)(last.bits + here.bits) <= bits) break; + PULLBYTE(); + } + DROPBITS(last.bits); + } + DROPBITS(here.bits); + if (here.op & 64) { + strm->msg = (char *)"invalid distance code"; + state->mode = BAD; + break; + } + state->offset = (unsigned)here.val; + + /* get distance extra bits, if any */ + state->extra = (unsigned)(here.op) & 15; + if (state->extra != 0) { + NEEDBITS(state->extra); + state->offset += BITS(state->extra); + DROPBITS(state->extra); + } + if (state->offset > state->wsize - (state->whave < state->wsize ? + left : 0)) { + strm->msg = (char *)"invalid distance too far back"; + state->mode = BAD; + break; + } + Tracevv((stderr, "inflate: distance %u\n", state->offset)); + + /* copy match from window to output */ + do { + ROOM(); + copy = state->wsize - state->offset; + if (copy < left) { + from = put + copy; + copy = left - copy; + } + else { + from = put - state->offset; + copy = left; + } + if (copy > state->length) copy = state->length; + state->length -= copy; + left -= copy; + do { + *put++ = *from++; + } while (--copy); + } while (state->length != 0); + break; + + case DONE: + /* inflate stream terminated properly -- write leftover output */ + ret = Z_STREAM_END; + if (left < state->wsize) { + if (out(out_desc, state->window, state->wsize - left)) + ret = Z_BUF_ERROR; + } + goto inf_leave; + + case BAD: + ret = Z_DATA_ERROR; + goto inf_leave; + + default: /* can't happen, but makes compilers happy */ + ret = Z_STREAM_ERROR; + goto inf_leave; + } + + /* Return unused input */ + inf_leave: + strm->next_in = next; + strm->avail_in = have; + return ret; +} + +int ZEXPORT inflateBackEnd(strm) +z_streamp strm; +{ + if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0) + return Z_STREAM_ERROR; + ZFREE(strm, strm->state); + strm->state = Z_NULL; + Tracev((stderr, "inflate: end\n")); + return Z_OK; +} diff --git a/sdk-modifications/libsrc/zlib/inffast.c b/sdk-modifications/libsrc/zlib/inffast.c new file mode 100644 index 0000000..2f1d60b --- /dev/null +++ b/sdk-modifications/libsrc/zlib/inffast.c @@ -0,0 +1,340 @@ +/* inffast.c -- fast decoding + * Copyright (C) 1995-2008, 2010 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "zutil.h" +#include "inftrees.h" +#include "inflate.h" +#include "inffast.h" + +#ifndef ASMINF + +/* Allow machine dependent optimization for post-increment or pre-increment. + Based on testing to date, + Pre-increment preferred for: + - PowerPC G3 (Adler) + - MIPS R5000 (Randers-Pehrson) + Post-increment preferred for: + - none + No measurable difference: + - Pentium III (Anderson) + - M68060 (Nikl) + */ +#ifdef POSTINC +# define OFF 0 +# define PUP(a) *(a)++ +#else +# define OFF 1 +# define PUP(a) *++(a) +#endif + +/* + Decode literal, length, and distance codes and write out the resulting + literal and match bytes until either not enough input or output is + available, an end-of-block is encountered, or a data error is encountered. + When large enough input and output buffers are supplied to inflate(), for + example, a 16K input buffer and a 64K output buffer, more than 95% of the + inflate execution time is spent in this routine. + + Entry assumptions: + + state->mode == LEN + strm->avail_in >= 6 + strm->avail_out >= 258 + start >= strm->avail_out + state->bits < 8 + + On return, state->mode is one of: + + LEN -- ran out of enough output space or enough available input + TYPE -- reached end of block code, inflate() to interpret next block + BAD -- error in block data + + Notes: + + - The maximum input bits used by a length/distance pair is 15 bits for the + length code, 5 bits for the length extra, 15 bits for the distance code, + and 13 bits for the distance extra. This totals 48 bits, or six bytes. + Therefore if strm->avail_in >= 6, then there is enough input to avoid + checking for available input while decoding. + + - The maximum bytes that a single length/distance pair can output is 258 + bytes, which is the maximum length that can be coded. inflate_fast() + requires strm->avail_out >= 258 for each loop to avoid checking for + output space. + */ +void ZLIB_INTERNAL inflate_fast(strm, start) +z_streamp strm; +unsigned start; /* inflate()'s starting value for strm->avail_out */ +{ + struct inflate_state FAR *state; + unsigned char FAR *in; /* local strm->next_in */ + unsigned char FAR *last; /* while in < last, enough input available */ + unsigned char FAR *out; /* local strm->next_out */ + unsigned char FAR *beg; /* inflate()'s initial strm->next_out */ + unsigned char FAR *end; /* while out < end, enough space available */ +#ifdef INFLATE_STRICT + unsigned dmax; /* maximum distance from zlib header */ +#endif + unsigned wsize; /* window size or zero if not using window */ + unsigned whave; /* valid bytes in the window */ + unsigned wnext; /* window write index */ + unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */ + unsigned long hold; /* local strm->hold */ + unsigned bits; /* local strm->bits */ + code const FAR *lcode; /* local strm->lencode */ + code const FAR *dcode; /* local strm->distcode */ + unsigned lmask; /* mask for first level of length codes */ + unsigned dmask; /* mask for first level of distance codes */ + code here; /* retrieved table entry */ + unsigned op; /* code bits, operation, extra bits, or */ + /* window position, window bytes to copy */ + unsigned len; /* match length, unused bytes */ + unsigned dist; /* match distance */ + unsigned char FAR *from; /* where to copy match from */ + + /* copy state to local variables */ + state = (struct inflate_state FAR *)strm->state; + in = strm->next_in - OFF; + last = in + (strm->avail_in - 5); + out = strm->next_out - OFF; + beg = out - (start - strm->avail_out); + end = out + (strm->avail_out - 257); +#ifdef INFLATE_STRICT + dmax = state->dmax; +#endif + wsize = state->wsize; + whave = state->whave; + wnext = state->wnext; + window = state->window; + hold = state->hold; + bits = state->bits; + lcode = state->lencode; + dcode = state->distcode; + lmask = (1U << state->lenbits) - 1; + dmask = (1U << state->distbits) - 1; + + /* decode literals and length/distances until end-of-block or not enough + input data or output space */ + do { + if (bits < 15) { + hold += (unsigned long)(PUP(in)) << bits; + bits += 8; + hold += (unsigned long)(PUP(in)) << bits; + bits += 8; + } + here = lcode[hold & lmask]; + dolen: + op = (unsigned)(here.bits); + hold >>= op; + bits -= op; + op = (unsigned)(here.op); + if (op == 0) { /* literal */ + Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? + "inflate: literal '%c'\n" : + "inflate: literal 0x%02x\n", here.val)); + PUP(out) = (unsigned char)(here.val); + } + else if (op & 16) { /* length base */ + len = (unsigned)(here.val); + op &= 15; /* number of extra bits */ + if (op) { + if (bits < op) { + hold += (unsigned long)(PUP(in)) << bits; + bits += 8; + } + len += (unsigned)hold & ((1U << op) - 1); + hold >>= op; + bits -= op; + } + Tracevv((stderr, "inflate: length %u\n", len)); + if (bits < 15) { + hold += (unsigned long)(PUP(in)) << bits; + bits += 8; + hold += (unsigned long)(PUP(in)) << bits; + bits += 8; + } + here = dcode[hold & dmask]; + dodist: + op = (unsigned)(here.bits); + hold >>= op; + bits -= op; + op = (unsigned)(here.op); + if (op & 16) { /* distance base */ + dist = (unsigned)(here.val); + op &= 15; /* number of extra bits */ + if (bits < op) { + hold += (unsigned long)(PUP(in)) << bits; + bits += 8; + if (bits < op) { + hold += (unsigned long)(PUP(in)) << bits; + bits += 8; + } + } + dist += (unsigned)hold & ((1U << op) - 1); +#ifdef INFLATE_STRICT + if (dist > dmax) { + strm->msg = (char *)"invalid distance too far back"; + state->mode = BAD; + break; + } +#endif + hold >>= op; + bits -= op; + Tracevv((stderr, "inflate: distance %u\n", dist)); + op = (unsigned)(out - beg); /* max distance in output */ + if (dist > op) { /* see if copy from window */ + op = dist - op; /* distance back in window */ + if (op > whave) { + if (state->sane) { + strm->msg = + (char *)"invalid distance too far back"; + state->mode = BAD; + break; + } +#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR + if (len <= op - whave) { + do { + PUP(out) = 0; + } while (--len); + continue; + } + len -= op - whave; + do { + PUP(out) = 0; + } while (--op > whave); + if (op == 0) { + from = out - dist; + do { + PUP(out) = PUP(from); + } while (--len); + continue; + } +#endif + } + from = window - OFF; + if (wnext == 0) { /* very common case */ + from += wsize - op; + if (op < len) { /* some from window */ + len -= op; + do { + PUP(out) = PUP(from); + } while (--op); + from = out - dist; /* rest from output */ + } + } + else if (wnext < op) { /* wrap around window */ + from += wsize + wnext - op; + op -= wnext; + if (op < len) { /* some from end of window */ + len -= op; + do { + PUP(out) = PUP(from); + } while (--op); + from = window - OFF; + if (wnext < len) { /* some from start of window */ + op = wnext; + len -= op; + do { + PUP(out) = PUP(from); + } while (--op); + from = out - dist; /* rest from output */ + } + } + } + else { /* contiguous in window */ + from += wnext - op; + if (op < len) { /* some from window */ + len -= op; + do { + PUP(out) = PUP(from); + } while (--op); + from = out - dist; /* rest from output */ + } + } + while (len > 2) { + PUP(out) = PUP(from); + PUP(out) = PUP(from); + PUP(out) = PUP(from); + len -= 3; + } + if (len) { + PUP(out) = PUP(from); + if (len > 1) + PUP(out) = PUP(from); + } + } + else { + from = out - dist; /* copy direct from output */ + do { /* minimum length is three */ + PUP(out) = PUP(from); + PUP(out) = PUP(from); + PUP(out) = PUP(from); + len -= 3; + } while (len > 2); + if (len) { + PUP(out) = PUP(from); + if (len > 1) + PUP(out) = PUP(from); + } + } + } + else if ((op & 64) == 0) { /* 2nd level distance code */ + here = dcode[here.val + (hold & ((1U << op) - 1))]; + goto dodist; + } + else { + strm->msg = (char *)"invalid distance code"; + state->mode = BAD; + break; + } + } + else if ((op & 64) == 0) { /* 2nd level length code */ + here = lcode[here.val + (hold & ((1U << op) - 1))]; + goto dolen; + } + else if (op & 32) { /* end-of-block */ + Tracevv((stderr, "inflate: end of block\n")); + state->mode = TYPE; + break; + } + else { + strm->msg = (char *)"invalid literal/length code"; + state->mode = BAD; + break; + } + } while (in < last && out < end); + + /* return unused bytes (on entry, bits < 8, so in won't go too far back) */ + len = bits >> 3; + in -= len; + bits -= len << 3; + hold &= (1U << bits) - 1; + + /* update state and return */ + strm->next_in = in + OFF; + strm->next_out = out + OFF; + strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last)); + strm->avail_out = (unsigned)(out < end ? + 257 + (end - out) : 257 - (out - end)); + state->hold = hold; + state->bits = bits; + return; +} + +/* + inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe): + - Using bit fields for code structure + - Different op definition to avoid & for extra bits (do & for table bits) + - Three separate decoding do-loops for direct, window, and wnext == 0 + - Special case for distance > 1 copies to do overlapped load and store copy + - Explicit branch predictions (based on measured branch probabilities) + - Deferring match copy and interspersed it with decoding subsequent codes + - Swapping literal/length else + - Swapping window/direct else + - Larger unrolled copy loops (three is about right) + - Moving len -= 3 statement into middle of loop + */ + +#endif /* !ASMINF */ diff --git a/sdk-modifications/libsrc/zlib/inffast.h b/sdk-modifications/libsrc/zlib/inffast.h new file mode 100644 index 0000000..e5c1aa4 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/inffast.h @@ -0,0 +1,11 @@ +/* inffast.h -- header to use inffast.c + * Copyright (C) 1995-2003, 2010 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* WARNING: this file should *not* be used by applications. It is + part of the implementation of the compression library and is + subject to change. Applications should only use zlib.h. + */ + +void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start)); diff --git a/sdk-modifications/libsrc/zlib/inffixed.h b/sdk-modifications/libsrc/zlib/inffixed.h new file mode 100644 index 0000000..d628327 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/inffixed.h @@ -0,0 +1,94 @@ + /* inffixed.h -- table for decoding fixed codes + * Generated automatically by makefixed(). + */ + + /* WARNING: this file should *not* be used by applications. + It is part of the implementation of this library and is + subject to change. Applications should only use zlib.h. + */ + + static const code lenfix[512] = { + {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48}, + {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128}, + {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59}, + {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176}, + {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20}, + {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100}, + {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8}, + {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216}, + {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76}, + {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114}, + {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2}, + {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148}, + {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42}, + {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86}, + {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15}, + {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236}, + {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62}, + {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142}, + {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31}, + {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162}, + {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25}, + {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105}, + {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4}, + {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202}, + {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69}, + {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125}, + {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13}, + {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195}, + {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35}, + {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91}, + {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19}, + {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246}, + {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55}, + {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135}, + {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99}, + {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190}, + {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16}, + {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96}, + {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6}, + {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209}, + {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72}, + {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116}, + {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4}, + {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153}, + {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44}, + {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82}, + {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11}, + {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229}, + {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58}, + {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138}, + {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51}, + {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173}, + {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30}, + {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110}, + {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0}, + {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195}, + {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65}, + {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121}, + {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9}, + {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258}, + {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37}, + {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93}, + {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23}, + {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251}, + {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51}, + {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131}, + {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67}, + {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183}, + {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23}, + {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103}, + {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9}, + {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223}, + {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79}, + {0,9,255} + }; + + static const code distfix[32] = { + {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025}, + {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193}, + {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385}, + {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577}, + {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073}, + {22,5,193},{64,5,0} + }; diff --git a/sdk-modifications/libsrc/zlib/inflate.c b/sdk-modifications/libsrc/zlib/inflate.c new file mode 100644 index 0000000..cc89517 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/inflate.c @@ -0,0 +1,1501 @@ +/* inflate.c -- zlib decompression + * Copyright (C) 1995-2011 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* + * Change history: + * + * 1.2.beta0 24 Nov 2002 + * - First version -- complete rewrite of inflate to simplify code, avoid + * creation of window when not needed, minimize use of window when it is + * needed, make inffast.c even faster, implement gzip decoding, and to + * improve code readability and style over the previous zlib inflate code + * + * 1.2.beta1 25 Nov 2002 + * - Use pointers for available input and output checking in inffast.c + * - Remove input and output counters in inffast.c + * - Change inffast.c entry and loop from avail_in >= 7 to >= 6 + * - Remove unnecessary second byte pull from length extra in inffast.c + * - Unroll direct copy to three copies per loop in inffast.c + * + * 1.2.beta2 4 Dec 2002 + * - Change external routine names to reduce potential conflicts + * - Correct filename to inffixed.h for fixed tables in inflate.c + * - Make hbuf[] unsigned char to match parameter type in inflate.c + * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset) + * to avoid negation problem on Alphas (64 bit) in inflate.c + * + * 1.2.beta3 22 Dec 2002 + * - Add comments on state->bits assertion in inffast.c + * - Add comments on op field in inftrees.h + * - Fix bug in reuse of allocated window after inflateReset() + * - Remove bit fields--back to byte structure for speed + * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths + * - Change post-increments to pre-increments in inflate_fast(), PPC biased? + * - Add compile time option, POSTINC, to use post-increments instead (Intel?) + * - Make MATCH copy in inflate() much faster for when inflate_fast() not used + * - Use local copies of stream next and avail values, as well as local bit + * buffer and bit count in inflate()--for speed when inflate_fast() not used + * + * 1.2.beta4 1 Jan 2003 + * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings + * - Move a comment on output buffer sizes from inffast.c to inflate.c + * - Add comments in inffast.c to introduce the inflate_fast() routine + * - Rearrange window copies in inflate_fast() for speed and simplification + * - Unroll last copy for window match in inflate_fast() + * - Use local copies of window variables in inflate_fast() for speed + * - Pull out common wnext == 0 case for speed in inflate_fast() + * - Make op and len in inflate_fast() unsigned for consistency + * - Add FAR to lcode and dcode declarations in inflate_fast() + * - Simplified bad distance check in inflate_fast() + * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new + * source file infback.c to provide a call-back interface to inflate for + * programs like gzip and unzip -- uses window as output buffer to avoid + * window copying + * + * 1.2.beta5 1 Jan 2003 + * - Improved inflateBack() interface to allow the caller to provide initial + * input in strm. + * - Fixed stored blocks bug in inflateBack() + * + * 1.2.beta6 4 Jan 2003 + * - Added comments in inffast.c on effectiveness of POSTINC + * - Typecasting all around to reduce compiler warnings + * - Changed loops from while (1) or do {} while (1) to for (;;), again to + * make compilers happy + * - Changed type of window in inflateBackInit() to unsigned char * + * + * 1.2.beta7 27 Jan 2003 + * - Changed many types to unsigned or unsigned short to avoid warnings + * - Added inflateCopy() function + * + * 1.2.0 9 Mar 2003 + * - Changed inflateBack() interface to provide separate opaque descriptors + * for the in() and out() functions + * - Changed inflateBack() argument and in_func typedef to swap the length + * and buffer address return values for the input function + * - Check next_in and next_out for Z_NULL on entry to inflate() + * + * The history for versions after 1.2.0 are in ChangeLog in zlib distribution. + */ + +#include "zutil.h" +#include "inftrees.h" +#include "inflate.h" +#include "inffast.h" + +#ifdef MAKEFIXED +# ifndef BUILDFIXED +# define BUILDFIXED +# endif +#endif + +/* function prototypes */ +local void fixedtables OF((struct inflate_state FAR *state)); +local int updatewindow OF((z_streamp strm, unsigned out)); +#ifdef BUILDFIXED + void makefixed OF((void)); +#endif +local unsigned syncsearch OF((unsigned FAR *have, unsigned char FAR *buf, + unsigned len)); + +int ZEXPORT inflateResetKeep(strm) +z_streamp strm; +{ + struct inflate_state FAR *state; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + strm->total_in = strm->total_out = state->total = 0; + strm->msg = Z_NULL; + if (state->wrap) /* to support ill-conceived Java test suite */ + strm->adler = state->wrap & 1; + state->mode = HEAD; + state->last = 0; + state->havedict = 0; + state->dmax = 32768U; + state->head = Z_NULL; + state->hold = 0; + state->bits = 0; + state->lencode = state->distcode = state->next = state->codes; + state->sane = 1; + state->back = -1; + Tracev((stderr, "inflate: reset\n")); + return Z_OK; +} + +int ZEXPORT inflateReset(strm) +z_streamp strm; +{ + struct inflate_state FAR *state; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + state->wsize = 0; + state->whave = 0; + state->wnext = 0; + return inflateResetKeep(strm); +} + +int ZEXPORT inflateReset2(strm, windowBits) +z_streamp strm; +int windowBits; +{ + int wrap; + struct inflate_state FAR *state; + + /* get the state */ + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + + /* extract wrap request from windowBits parameter */ + if (windowBits < 0) { + wrap = 0; + windowBits = -windowBits; + } + else { + wrap = (windowBits >> 4) + 1; +#ifdef GUNZIP + if (windowBits < 48) + windowBits &= 15; +#endif + } + + /* set number of window bits, free window if different */ + if (windowBits && (windowBits < 8 || windowBits > 15)) + return Z_STREAM_ERROR; + if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) { + ZFREE(strm, state->window); + state->window = Z_NULL; + } + + /* update state and reset the rest of it */ + state->wrap = wrap; + state->wbits = (unsigned)windowBits; + return inflateReset(strm); +} + +int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size) +z_streamp strm; +int windowBits; +const char *version; +int stream_size; +{ + int ret; + struct inflate_state FAR *state; + + if (version == Z_NULL || version[0] != ZLIB_VERSION[0] || + stream_size != (int)(sizeof(z_stream))) + return Z_VERSION_ERROR; + if (strm == Z_NULL) return Z_STREAM_ERROR; + strm->msg = Z_NULL; /* in case we return an error */ + if (strm->zalloc == (alloc_func)0) { +#ifdef Z_SOLO + return Z_STREAM_ERROR; +#else + strm->zalloc = zcalloc; + strm->opaque = (voidpf)0; +#endif + } + if (strm->zfree == (free_func)0) +#ifdef Z_SOLO + return Z_STREAM_ERROR; +#else + strm->zfree = zcfree; +#endif + state = (struct inflate_state FAR *) + ZALLOC(strm, 1, sizeof(struct inflate_state)); + if (state == Z_NULL) return Z_MEM_ERROR; + Tracev((stderr, "inflate: allocated\n")); + strm->state = (struct internal_state FAR *)state; + state->window = Z_NULL; + ret = inflateReset2(strm, windowBits); + if (ret != Z_OK) { + ZFREE(strm, state); + strm->state = Z_NULL; + } + return ret; +} + +int ZEXPORT inflateInit_(strm, version, stream_size) +z_streamp strm; +const char *version; +int stream_size; +{ + return inflateInit2_(strm, DEF_WBITS, version, stream_size); +} + +int ZEXPORT inflatePrime(strm, bits, value) +z_streamp strm; +int bits; +int value; +{ + struct inflate_state FAR *state; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + if (bits < 0) { + state->hold = 0; + state->bits = 0; + return Z_OK; + } + if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR; + value &= (1L << bits) - 1; + state->hold += value << state->bits; + state->bits += bits; + return Z_OK; +} + +/* + Return state with length and distance decoding tables and index sizes set to + fixed code decoding. Normally this returns fixed tables from inffixed.h. + If BUILDFIXED is defined, then instead this routine builds the tables the + first time it's called, and returns those tables the first time and + thereafter. This reduces the size of the code by about 2K bytes, in + exchange for a little execution time. However, BUILDFIXED should not be + used for threaded applications, since the rewriting of the tables and virgin + may not be thread-safe. + */ +local void fixedtables(state) +struct inflate_state FAR *state; +{ +#ifdef BUILDFIXED + static int virgin = 1; + static code *lenfix, *distfix; + static code fixed[544]; + + /* build fixed huffman tables if first call (may not be thread safe) */ + if (virgin) { + unsigned sym, bits; + static code *next; + + /* literal/length table */ + sym = 0; + while (sym < 144) state->lens[sym++] = 8; + while (sym < 256) state->lens[sym++] = 9; + while (sym < 280) state->lens[sym++] = 7; + while (sym < 288) state->lens[sym++] = 8; + next = fixed; + lenfix = next; + bits = 9; + inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work); + + /* distance table */ + sym = 0; + while (sym < 32) state->lens[sym++] = 5; + distfix = next; + bits = 5; + inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work); + + /* do this just once */ + virgin = 0; + } +#else /* !BUILDFIXED */ +# include "inffixed.h" +#endif /* BUILDFIXED */ + state->lencode = lenfix; + state->lenbits = 9; + state->distcode = distfix; + state->distbits = 5; +} + +#ifdef MAKEFIXED +#include <stdio.h> + +/* + Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also + defines BUILDFIXED, so the tables are built on the fly. makefixed() writes + those tables to stdout, which would be piped to inffixed.h. A small program + can simply call makefixed to do this: + + void makefixed(void); + + int main(void) + { + makefixed(); + return 0; + } + + Then that can be linked with zlib built with MAKEFIXED defined and run: + + a.out > inffixed.h + */ +void makefixed() +{ + unsigned low, size; + struct inflate_state state; + + fixedtables(&state); + puts(" /* inffixed.h -- table for decoding fixed codes"); + puts(" * Generated automatically by makefixed()."); + puts(" */"); + puts(""); + puts(" /* WARNING: this file should *not* be used by applications."); + puts(" It is part of the implementation of this library and is"); + puts(" subject to change. Applications should only use zlib.h."); + puts(" */"); + puts(""); + size = 1U << 9; + printf(" static const code lenfix[%u] = {", size); + low = 0; + for (;;) { + if ((low % 7) == 0) printf("\n "); + printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op, + state.lencode[low].bits, state.lencode[low].val); + if (++low == size) break; + putchar(','); + } + puts("\n };"); + size = 1U << 5; + printf("\n static const code distfix[%u] = {", size); + low = 0; + for (;;) { + if ((low % 6) == 0) printf("\n "); + printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits, + state.distcode[low].val); + if (++low == size) break; + putchar(','); + } + puts("\n };"); +} +#endif /* MAKEFIXED */ + +/* + Update the window with the last wsize (normally 32K) bytes written before + returning. If window does not exist yet, create it. This is only called + when a window is already in use, or when output has been written during this + inflate call, but the end of the deflate stream has not been reached yet. + It is also called to create a window for dictionary data when a dictionary + is loaded. + + Providing output buffers larger than 32K to inflate() should provide a speed + advantage, since only the last 32K of output is copied to the sliding window + upon return from inflate(), and since all distances after the first 32K of + output will fall in the output data, making match copies simpler and faster. + The advantage may be dependent on the size of the processor's data caches. + */ +local int updatewindow(strm, out) +z_streamp strm; +unsigned out; +{ + struct inflate_state FAR *state; + unsigned copy, dist; + + state = (struct inflate_state FAR *)strm->state; + + /* if it hasn't been done already, allocate space for the window */ + if (state->window == Z_NULL) { + state->window = (unsigned char FAR *) + ZALLOC(strm, 1U << state->wbits, + sizeof(unsigned char)); + if (state->window == Z_NULL) return 1; + } + + /* if window not in use yet, initialize */ + if (state->wsize == 0) { + state->wsize = 1U << state->wbits; + state->wnext = 0; + state->whave = 0; + } + + /* copy state->wsize or less output bytes into the circular window */ + copy = out - strm->avail_out; + if (copy >= state->wsize) { + zmemcpy(state->window, strm->next_out - state->wsize, state->wsize); + state->wnext = 0; + state->whave = state->wsize; + } + else { + dist = state->wsize - state->wnext; + if (dist > copy) dist = copy; + zmemcpy(state->window + state->wnext, strm->next_out - copy, dist); + copy -= dist; + if (copy) { + zmemcpy(state->window, strm->next_out - copy, copy); + state->wnext = copy; + state->whave = state->wsize; + } + else { + state->wnext += dist; + if (state->wnext == state->wsize) state->wnext = 0; + if (state->whave < state->wsize) state->whave += dist; + } + } + return 0; +} + +/* Macros for inflate(): */ + +/* check function to use adler32() for zlib or crc32() for gzip */ +#ifdef GUNZIP +# define UPDATE(check, buf, len) \ + (state->flags ? crc32(check, buf, len) : adler32(check, buf, len)) +#else +# define UPDATE(check, buf, len) adler32(check, buf, len) +#endif + +/* check macros for header crc */ +#ifdef GUNZIP +# define CRC2(check, word) \ + do { \ + hbuf[0] = (unsigned char)(word); \ + hbuf[1] = (unsigned char)((word) >> 8); \ + check = crc32(check, hbuf, 2); \ + } while (0) + +# define CRC4(check, word) \ + do { \ + hbuf[0] = (unsigned char)(word); \ + hbuf[1] = (unsigned char)((word) >> 8); \ + hbuf[2] = (unsigned char)((word) >> 16); \ + hbuf[3] = (unsigned char)((word) >> 24); \ + check = crc32(check, hbuf, 4); \ + } while (0) +#endif + +/* Load registers with state in inflate() for speed */ +#define LOAD() \ + do { \ + put = strm->next_out; \ + left = strm->avail_out; \ + next = strm->next_in; \ + have = strm->avail_in; \ + hold = state->hold; \ + bits = state->bits; \ + } while (0) + +/* Restore state from registers in inflate() */ +#define RESTORE() \ + do { \ + strm->next_out = put; \ + strm->avail_out = left; \ + strm->next_in = next; \ + strm->avail_in = have; \ + state->hold = hold; \ + state->bits = bits; \ + } while (0) + +/* Clear the input bit accumulator */ +#define INITBITS() \ + do { \ + hold = 0; \ + bits = 0; \ + } while (0) + +/* Get a byte of input into the bit accumulator, or return from inflate() + if there is no input available. */ +#define PULLBYTE() \ + do { \ + if (have == 0) goto inf_leave; \ + have--; \ + hold += (unsigned long)(*next++) << bits; \ + bits += 8; \ + } while (0) + +/* Assure that there are at least n bits in the bit accumulator. If there is + not enough available input to do that, then return from inflate(). */ +#define NEEDBITS(n) \ + do { \ + while (bits < (unsigned)(n)) \ + PULLBYTE(); \ + } while (0) + +/* Return the low n bits of the bit accumulator (n < 16) */ +#define BITS(n) \ + ((unsigned)hold & ((1U << (n)) - 1)) + +/* Remove n bits from the bit accumulator */ +#define DROPBITS(n) \ + do { \ + hold >>= (n); \ + bits -= (unsigned)(n); \ + } while (0) + +/* Remove zero to seven bits as needed to go to a byte boundary */ +#define BYTEBITS() \ + do { \ + hold >>= bits & 7; \ + bits -= bits & 7; \ + } while (0) + +/* Reverse the bytes in a 32-bit value */ +#define REVERSE(q) \ + ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ + (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) + +/* + inflate() uses a state machine to process as much input data and generate as + much output data as possible before returning. The state machine is + structured roughly as follows: + + for (;;) switch (state) { + ... + case STATEn: + if (not enough input data or output space to make progress) + return; + ... make progress ... + state = STATEm; + break; + ... + } + + so when inflate() is called again, the same case is attempted again, and + if the appropriate resources are provided, the machine proceeds to the + next state. The NEEDBITS() macro is usually the way the state evaluates + whether it can proceed or should return. NEEDBITS() does the return if + the requested bits are not available. The typical use of the BITS macros + is: + + NEEDBITS(n); + ... do something with BITS(n) ... + DROPBITS(n); + + where NEEDBITS(n) either returns from inflate() if there isn't enough + input left to load n bits into the accumulator, or it continues. BITS(n) + gives the low n bits in the accumulator. When done, DROPBITS(n) drops + the low n bits off the accumulator. INITBITS() clears the accumulator + and sets the number of available bits to zero. BYTEBITS() discards just + enough bits to put the accumulator on a byte boundary. After BYTEBITS() + and a NEEDBITS(8), then BITS(8) would return the next byte in the stream. + + NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return + if there is no input available. The decoding of variable length codes uses + PULLBYTE() directly in order to pull just enough bytes to decode the next + code, and no more. + + Some states loop until they get enough input, making sure that enough + state information is maintained to continue the loop where it left off + if NEEDBITS() returns in the loop. For example, want, need, and keep + would all have to actually be part of the saved state in case NEEDBITS() + returns: + + case STATEw: + while (want < need) { + NEEDBITS(n); + keep[want++] = BITS(n); + DROPBITS(n); + } + state = STATEx; + case STATEx: + + As shown above, if the next state is also the next case, then the break + is omitted. + + A state may also return if there is not enough output space available to + complete that state. Those states are copying stored data, writing a + literal byte, and copying a matching string. + + When returning, a "goto inf_leave" is used to update the total counters, + update the check value, and determine whether any progress has been made + during that inflate() call in order to return the proper return code. + Progress is defined as a change in either strm->avail_in or strm->avail_out. + When there is a window, goto inf_leave will update the window with the last + output written. If a goto inf_leave occurs in the middle of decompression + and there is no window currently, goto inf_leave will create one and copy + output to the window for the next call of inflate(). + + In this implementation, the flush parameter of inflate() only affects the + return code (per zlib.h). inflate() always writes as much as possible to + strm->next_out, given the space available and the provided input--the effect + documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers + the allocation of and copying into a sliding window until necessary, which + provides the effect documented in zlib.h for Z_FINISH when the entire input + stream available. So the only thing the flush parameter actually does is: + when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it + will return Z_BUF_ERROR if it has not reached the end of the stream. + */ + +int ZEXPORT inflate(strm, flush) +z_streamp strm; +int flush; +{ + struct inflate_state FAR *state; + unsigned char FAR *next; /* next input */ + unsigned char FAR *put; /* next output */ + unsigned have, left; /* available input and output */ + unsigned long hold; /* bit buffer */ + unsigned bits; /* bits in bit buffer */ + unsigned in, out; /* save starting available input and output */ + unsigned copy; /* number of stored or match bytes to copy */ + unsigned char FAR *from; /* where to copy match bytes from */ + code here; /* current decoding table entry */ + code last; /* parent table entry */ + unsigned len; /* length to copy for repeats, bits to drop */ + int ret; /* return code */ +#ifdef GUNZIP + unsigned char hbuf[4]; /* buffer for gzip header crc calculation */ +#endif + static const unsigned short order[19] = /* permutation of code lengths */ + {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; + + if (strm == Z_NULL || strm->state == Z_NULL || strm->next_out == Z_NULL || + (strm->next_in == Z_NULL && strm->avail_in != 0)) + return Z_STREAM_ERROR; + + state = (struct inflate_state FAR *)strm->state; + if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */ + LOAD(); + in = have; + out = left; + ret = Z_OK; + for (;;) + switch (state->mode) { + case HEAD: + if (state->wrap == 0) { + state->mode = TYPEDO; + break; + } + NEEDBITS(16); +#ifdef GUNZIP + if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */ + state->check = crc32(0L, Z_NULL, 0); + CRC2(state->check, hold); + INITBITS(); + state->mode = FLAGS; + break; + } + state->flags = 0; /* expect zlib header */ + if (state->head != Z_NULL) + state->head->done = -1; + if (!(state->wrap & 1) || /* check if zlib header allowed */ +#else + if ( +#endif + ((BITS(8) << 8) + (hold >> 8)) % 31) { + strm->msg = (char *)"incorrect header check"; + state->mode = BAD; + break; + } + if (BITS(4) != Z_DEFLATED) { + strm->msg = (char *)"unknown compression method"; + state->mode = BAD; + break; + } + DROPBITS(4); + len = BITS(4) + 8; + if (state->wbits == 0) + state->wbits = len; + else if (len > state->wbits) { + strm->msg = (char *)"invalid window size"; + state->mode = BAD; + break; + } + state->dmax = 1U << len; + Tracev((stderr, "inflate: zlib header ok\n")); + strm->adler = state->check = adler32(0L, Z_NULL, 0); + state->mode = hold & 0x200 ? DICTID : TYPE; + INITBITS(); + break; +#ifdef GUNZIP + case FLAGS: + NEEDBITS(16); + state->flags = (int)(hold); + if ((state->flags & 0xff) != Z_DEFLATED) { + strm->msg = (char *)"unknown compression method"; + state->mode = BAD; + break; + } + if (state->flags & 0xe000) { + strm->msg = (char *)"unknown header flags set"; + state->mode = BAD; + break; + } + if (state->head != Z_NULL) + state->head->text = (int)((hold >> 8) & 1); + if (state->flags & 0x0200) CRC2(state->check, hold); + INITBITS(); + state->mode = TIME; + case TIME: + NEEDBITS(32); + if (state->head != Z_NULL) + state->head->time = hold; + if (state->flags & 0x0200) CRC4(state->check, hold); + INITBITS(); + state->mode = OS; + case OS: + NEEDBITS(16); + if (state->head != Z_NULL) { + state->head->xflags = (int)(hold & 0xff); + state->head->os = (int)(hold >> 8); + } + if (state->flags & 0x0200) CRC2(state->check, hold); + INITBITS(); + state->mode = EXLEN; + case EXLEN: + if (state->flags & 0x0400) { + NEEDBITS(16); + state->length = (unsigned)(hold); + if (state->head != Z_NULL) + state->head->extra_len = (unsigned)hold; + if (state->flags & 0x0200) CRC2(state->check, hold); + INITBITS(); + } + else if (state->head != Z_NULL) + state->head->extra = Z_NULL; + state->mode = EXTRA; + case EXTRA: + if (state->flags & 0x0400) { + copy = state->length; + if (copy > have) copy = have; + if (copy) { + if (state->head != Z_NULL && + state->head->extra != Z_NULL) { + len = state->head->extra_len - state->length; + zmemcpy(state->head->extra + len, next, + len + copy > state->head->extra_max ? + state->head->extra_max - len : copy); + } + if (state->flags & 0x0200) + state->check = crc32(state->check, next, copy); + have -= copy; + next += copy; + state->length -= copy; + } + if (state->length) goto inf_leave; + } + state->length = 0; + state->mode = NAME; + case NAME: + if (state->flags & 0x0800) { + if (have == 0) goto inf_leave; + copy = 0; + do { + len = (unsigned)(next[copy++]); + if (state->head != Z_NULL && + state->head->name != Z_NULL && + state->length < state->head->name_max) + state->head->name[state->length++] = len; + } while (len && copy < have); + if (state->flags & 0x0200) + state->check = crc32(state->check, next, copy); + have -= copy; + next += copy; + if (len) goto inf_leave; + } + else if (state->head != Z_NULL) + state->head->name = Z_NULL; + state->length = 0; + state->mode = COMMENT; + case COMMENT: + if (state->flags & 0x1000) { + if (have == 0) goto inf_leave; + copy = 0; + do { + len = (unsigned)(next[copy++]); + if (state->head != Z_NULL && + state->head->comment != Z_NULL && + state->length < state->head->comm_max) + state->head->comment[state->length++] = len; + } while (len && copy < have); + if (state->flags & 0x0200) + state->check = crc32(state->check, next, copy); + have -= copy; + next += copy; + if (len) goto inf_leave; + } + else if (state->head != Z_NULL) + state->head->comment = Z_NULL; + state->mode = HCRC; + case HCRC: + if (state->flags & 0x0200) { + NEEDBITS(16); + if (hold != (state->check & 0xffff)) { + strm->msg = (char *)"header crc mismatch"; + state->mode = BAD; + break; + } + INITBITS(); + } + if (state->head != Z_NULL) { + state->head->hcrc = (int)((state->flags >> 9) & 1); + state->head->done = 1; + } + strm->adler = state->check = crc32(0L, Z_NULL, 0); + state->mode = TYPE; + break; +#endif + case DICTID: + NEEDBITS(32); + strm->adler = state->check = REVERSE(hold); + INITBITS(); + state->mode = DICT; + case DICT: + if (state->havedict == 0) { + RESTORE(); + return Z_NEED_DICT; + } + strm->adler = state->check = adler32(0L, Z_NULL, 0); + state->mode = TYPE; + case TYPE: + if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave; + case TYPEDO: + if (state->last) { + BYTEBITS(); + state->mode = CHECK; + break; + } + NEEDBITS(3); + state->last = BITS(1); + DROPBITS(1); + switch (BITS(2)) { + case 0: /* stored block */ + Tracev((stderr, "inflate: stored block%s\n", + state->last ? " (last)" : "")); + state->mode = STORED; + break; + case 1: /* fixed block */ + fixedtables(state); + Tracev((stderr, "inflate: fixed codes block%s\n", + state->last ? " (last)" : "")); + state->mode = LEN_; /* decode codes */ + if (flush == Z_TREES) { + DROPBITS(2); + goto inf_leave; + } + break; + case 2: /* dynamic block */ + Tracev((stderr, "inflate: dynamic codes block%s\n", + state->last ? " (last)" : "")); + state->mode = TABLE; + break; + case 3: + strm->msg = (char *)"invalid block type"; + state->mode = BAD; + } + DROPBITS(2); + break; + case STORED: + BYTEBITS(); /* go to byte boundary */ + NEEDBITS(32); + if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) { + strm->msg = (char *)"invalid stored block lengths"; + state->mode = BAD; + break; + } + state->length = (unsigned)hold & 0xffff; + Tracev((stderr, "inflate: stored length %u\n", + state->length)); + INITBITS(); + state->mode = COPY_; + if (flush == Z_TREES) goto inf_leave; + case COPY_: + state->mode = COPY; + case COPY: + copy = state->length; + if (copy) { + if (copy > have) copy = have; + if (copy > left) copy = left; + if (copy == 0) goto inf_leave; + zmemcpy(put, next, copy); + have -= copy; + next += copy; + left -= copy; + put += copy; + state->length -= copy; + break; + } + Tracev((stderr, "inflate: stored end\n")); + state->mode = TYPE; + break; + case TABLE: + NEEDBITS(14); + state->nlen = BITS(5) + 257; + DROPBITS(5); + state->ndist = BITS(5) + 1; + DROPBITS(5); + state->ncode = BITS(4) + 4; + DROPBITS(4); +#ifndef PKZIP_BUG_WORKAROUND + if (state->nlen > 286 || state->ndist > 30) { + strm->msg = (char *)"too many length or distance symbols"; + state->mode = BAD; + break; + } +#endif + Tracev((stderr, "inflate: table sizes ok\n")); + state->have = 0; + state->mode = LENLENS; + case LENLENS: + while (state->have < state->ncode) { + NEEDBITS(3); + state->lens[order[state->have++]] = (unsigned short)BITS(3); + DROPBITS(3); + } + while (state->have < 19) + state->lens[order[state->have++]] = 0; + state->next = state->codes; + state->lencode = (code const FAR *)(state->next); + state->lenbits = 7; + ret = inflate_table(CODES, state->lens, 19, &(state->next), + &(state->lenbits), state->work); + if (ret) { + strm->msg = (char *)"invalid code lengths set"; + state->mode = BAD; + break; + } + Tracev((stderr, "inflate: code lengths ok\n")); + state->have = 0; + state->mode = CODELENS; + case CODELENS: + while (state->have < state->nlen + state->ndist) { + for (;;) { + here = state->lencode[BITS(state->lenbits)]; + if ((unsigned)(here.bits) <= bits) break; + PULLBYTE(); + } + if (here.val < 16) { + DROPBITS(here.bits); + state->lens[state->have++] = here.val; + } + else { + if (here.val == 16) { + NEEDBITS(here.bits + 2); + DROPBITS(here.bits); + if (state->have == 0) { + strm->msg = (char *)"invalid bit length repeat"; + state->mode = BAD; + break; + } + len = state->lens[state->have - 1]; + copy = 3 + BITS(2); + DROPBITS(2); + } + else if (here.val == 17) { + NEEDBITS(here.bits + 3); + DROPBITS(here.bits); + len = 0; + copy = 3 + BITS(3); + DROPBITS(3); + } + else { + NEEDBITS(here.bits + 7); + DROPBITS(here.bits); + len = 0; + copy = 11 + BITS(7); + DROPBITS(7); + } + if (state->have + copy > state->nlen + state->ndist) { + strm->msg = (char *)"invalid bit length repeat"; + state->mode = BAD; + break; + } + while (copy--) + state->lens[state->have++] = (unsigned short)len; + } + } + + /* handle error breaks in while */ + if (state->mode == BAD) break; + + /* check for end-of-block code (better have one) */ + if (state->lens[256] == 0) { + strm->msg = (char *)"invalid code -- missing end-of-block"; + state->mode = BAD; + break; + } + + /* build code tables -- note: do not change the lenbits or distbits + values here (9 and 6) without reading the comments in inftrees.h + concerning the ENOUGH constants, which depend on those values */ + state->next = state->codes; + state->lencode = (code const FAR *)(state->next); + state->lenbits = 9; + ret = inflate_table(LENS, state->lens, state->nlen, &(state->next), + &(state->lenbits), state->work); + if (ret) { + strm->msg = (char *)"invalid literal/lengths set"; + state->mode = BAD; + break; + } + state->distcode = (code const FAR *)(state->next); + state->distbits = 6; + ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist, + &(state->next), &(state->distbits), state->work); + if (ret) { + strm->msg = (char *)"invalid distances set"; + state->mode = BAD; + break; + } + Tracev((stderr, "inflate: codes ok\n")); + state->mode = LEN_; + if (flush == Z_TREES) goto inf_leave; + case LEN_: + state->mode = LEN; + case LEN: + if (have >= 6 && left >= 258) { + RESTORE(); + inflate_fast(strm, out); + LOAD(); + if (state->mode == TYPE) + state->back = -1; + break; + } + state->back = 0; + for (;;) { + here = state->lencode[BITS(state->lenbits)]; + if ((unsigned)(here.bits) <= bits) break; + PULLBYTE(); + } + if (here.op && (here.op & 0xf0) == 0) { + last = here; + for (;;) { + here = state->lencode[last.val + + (BITS(last.bits + last.op) >> last.bits)]; + if ((unsigned)(last.bits + here.bits) <= bits) break; + PULLBYTE(); + } + DROPBITS(last.bits); + state->back += last.bits; + } + DROPBITS(here.bits); + state->back += here.bits; + state->length = (unsigned)here.val; + if ((int)(here.op) == 0) { + Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ? + "inflate: literal '%c'\n" : + "inflate: literal 0x%02x\n", here.val)); + state->mode = LIT; + break; + } + if (here.op & 32) { + Tracevv((stderr, "inflate: end of block\n")); + state->back = -1; + state->mode = TYPE; + break; + } + if (here.op & 64) { + strm->msg = (char *)"invalid literal/length code"; + state->mode = BAD; + break; + } + state->extra = (unsigned)(here.op) & 15; + state->mode = LENEXT; + case LENEXT: + if (state->extra) { + NEEDBITS(state->extra); + state->length += BITS(state->extra); + DROPBITS(state->extra); + state->back += state->extra; + } + Tracevv((stderr, "inflate: length %u\n", state->length)); + state->was = state->length; + state->mode = DIST; + case DIST: + for (;;) { + here = state->distcode[BITS(state->distbits)]; + if ((unsigned)(here.bits) <= bits) break; + PULLBYTE(); + } + if ((here.op & 0xf0) == 0) { + last = here; + for (;;) { + here = state->distcode[last.val + + (BITS(last.bits + last.op) >> last.bits)]; + if ((unsigned)(last.bits + here.bits) <= bits) break; + PULLBYTE(); + } + DROPBITS(last.bits); + state->back += last.bits; + } + DROPBITS(here.bits); + state->back += here.bits; + if (here.op & 64) { + strm->msg = (char *)"invalid distance code"; + state->mode = BAD; + break; + } + state->offset = (unsigned)here.val; + state->extra = (unsigned)(here.op) & 15; + state->mode = DISTEXT; + case DISTEXT: + if (state->extra) { + NEEDBITS(state->extra); + state->offset += BITS(state->extra); + DROPBITS(state->extra); + state->back += state->extra; + } +#ifdef INFLATE_STRICT + if (state->offset > state->dmax) { + strm->msg = (char *)"invalid distance too far back"; + state->mode = BAD; + break; + } +#endif + Tracevv((stderr, "inflate: distance %u\n", state->offset)); + state->mode = MATCH; + case MATCH: + if (left == 0) goto inf_leave; + copy = out - left; + if (state->offset > copy) { /* copy from window */ + copy = state->offset - copy; + if (copy > state->whave) { + if (state->sane) { + strm->msg = (char *)"invalid distance too far back"; + state->mode = BAD; + break; + } +#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR + Trace((stderr, "inflate.c too far\n")); + copy -= state->whave; + if (copy > state->length) copy = state->length; + if (copy > left) copy = left; + left -= copy; + state->length -= copy; + do { + *put++ = 0; + } while (--copy); + if (state->length == 0) state->mode = LEN; + break; +#endif + } + if (copy > state->wnext) { + copy -= state->wnext; + from = state->window + (state->wsize - copy); + } + else + from = state->window + (state->wnext - copy); + if (copy > state->length) copy = state->length; + } + else { /* copy from output */ + from = put - state->offset; + copy = state->length; + } + if (copy > left) copy = left; + left -= copy; + state->length -= copy; + do { + *put++ = *from++; + } while (--copy); + if (state->length == 0) state->mode = LEN; + break; + case LIT: + if (left == 0) goto inf_leave; + *put++ = (unsigned char)(state->length); + left--; + state->mode = LEN; + break; + case CHECK: + if (state->wrap) { + NEEDBITS(32); + out -= left; + strm->total_out += out; + state->total += out; + if (out) + strm->adler = state->check = + UPDATE(state->check, put - out, out); + out = left; + if (( +#ifdef GUNZIP + state->flags ? hold : +#endif + REVERSE(hold)) != state->check) { + strm->msg = (char *)"incorrect data check"; + state->mode = BAD; + break; + } + INITBITS(); + Tracev((stderr, "inflate: check matches trailer\n")); + } +#ifdef GUNZIP + state->mode = LENGTH; + case LENGTH: + if (state->wrap && state->flags) { + NEEDBITS(32); + if (hold != (state->total & 0xffffffffUL)) { + strm->msg = (char *)"incorrect length check"; + state->mode = BAD; + break; + } + INITBITS(); + Tracev((stderr, "inflate: length matches trailer\n")); + } +#endif + state->mode = DONE; + case DONE: + ret = Z_STREAM_END; + goto inf_leave; + case BAD: + ret = Z_DATA_ERROR; + goto inf_leave; + case MEM: + return Z_MEM_ERROR; + case SYNC: + default: + return Z_STREAM_ERROR; + } + + /* + Return from inflate(), updating the total counts and the check value. + If there was no progress during the inflate() call, return a buffer + error. Call updatewindow() to create and/or update the window state. + Note: a memory error from inflate() is non-recoverable. + */ + inf_leave: + RESTORE(); + if (state->wsize || (out != strm->avail_out && state->mode < BAD && + (state->mode < CHECK || flush != Z_FINISH))) + if (updatewindow(strm, out)) { + state->mode = MEM; + return Z_MEM_ERROR; + } + in -= strm->avail_in; + out -= strm->avail_out; + strm->total_in += in; + strm->total_out += out; + state->total += out; + if (state->wrap && out) + strm->adler = state->check = + UPDATE(state->check, strm->next_out - out, out); + strm->data_type = state->bits + (state->last ? 64 : 0) + + (state->mode == TYPE ? 128 : 0) + + (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0); + if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK) + ret = Z_BUF_ERROR; + return ret; +} + +int ZEXPORT inflateEnd(strm) +z_streamp strm; +{ + struct inflate_state FAR *state; + if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0) + return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + if (state->window != Z_NULL) ZFREE(strm, state->window); + ZFREE(strm, strm->state); + strm->state = Z_NULL; + Tracev((stderr, "inflate: end\n")); + return Z_OK; +} + +int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength) +z_streamp strm; +const Bytef *dictionary; +uInt dictLength; +{ + struct inflate_state FAR *state; + unsigned long id; + unsigned char *next; + unsigned avail; + int ret; + + /* check state */ + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + if (state->wrap != 0 && state->mode != DICT) + return Z_STREAM_ERROR; + + /* check for correct dictionary id */ + if (state->mode == DICT) { + id = adler32(0L, Z_NULL, 0); + id = adler32(id, dictionary, dictLength); + if (id != state->check) + return Z_DATA_ERROR; + } + + /* copy dictionary to window using updatewindow(), which will amend the + existing dictionary if appropriate */ + next = strm->next_out; + avail = strm->avail_out; + strm->next_out = (Bytef *)dictionary + dictLength; + strm->avail_out = 0; + ret = updatewindow(strm, dictLength); + strm->avail_out = avail; + strm->next_out = next; + if (ret) { + state->mode = MEM; + return Z_MEM_ERROR; + } + state->havedict = 1; + Tracev((stderr, "inflate: dictionary set\n")); + return Z_OK; +} + +int ZEXPORT inflateGetHeader(strm, head) +z_streamp strm; +gz_headerp head; +{ + struct inflate_state FAR *state; + + /* check state */ + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + if ((state->wrap & 2) == 0) return Z_STREAM_ERROR; + + /* save header structure */ + state->head = head; + head->done = 0; + return Z_OK; +} + +/* + Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found + or when out of input. When called, *have is the number of pattern bytes + found in order so far, in 0..3. On return *have is updated to the new + state. If on return *have equals four, then the pattern was found and the + return value is how many bytes were read including the last byte of the + pattern. If *have is less than four, then the pattern has not been found + yet and the return value is len. In the latter case, syncsearch() can be + called again with more data and the *have state. *have is initialized to + zero for the first call. + */ +local unsigned syncsearch(have, buf, len) +unsigned FAR *have; +unsigned char FAR *buf; +unsigned len; +{ + unsigned got; + unsigned next; + + got = *have; + next = 0; + while (next < len && got < 4) { + if ((int)(buf[next]) == (got < 2 ? 0 : 0xff)) + got++; + else if (buf[next]) + got = 0; + else + got = 4 - got; + next++; + } + *have = got; + return next; +} + +int ZEXPORT inflateSync(strm) +z_streamp strm; +{ + unsigned len; /* number of bytes to look at or looked at */ + unsigned long in, out; /* temporary to save total_in and total_out */ + unsigned char buf[4]; /* to restore bit buffer to byte string */ + struct inflate_state FAR *state; + + /* check parameters */ + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR; + + /* if first time, start search in bit buffer */ + if (state->mode != SYNC) { + state->mode = SYNC; + state->hold <<= state->bits & 7; + state->bits -= state->bits & 7; + len = 0; + while (state->bits >= 8) { + buf[len++] = (unsigned char)(state->hold); + state->hold >>= 8; + state->bits -= 8; + } + state->have = 0; + syncsearch(&(state->have), buf, len); + } + + /* search available input */ + len = syncsearch(&(state->have), strm->next_in, strm->avail_in); + strm->avail_in -= len; + strm->next_in += len; + strm->total_in += len; + + /* return no joy or set up to restart inflate() on a new block */ + if (state->have != 4) return Z_DATA_ERROR; + in = strm->total_in; out = strm->total_out; + inflateReset(strm); + strm->total_in = in; strm->total_out = out; + state->mode = TYPE; + return Z_OK; +} + +/* + Returns true if inflate is currently at the end of a block generated by + Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP + implementation to provide an additional safety check. PPP uses + Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored + block. When decompressing, PPP checks that at the end of input packet, + inflate is waiting for these length bytes. + */ +int ZEXPORT inflateSyncPoint(strm) +z_streamp strm; +{ + struct inflate_state FAR *state; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + return state->mode == STORED && state->bits == 0; +} + +int ZEXPORT inflateCopy(dest, source) +z_streamp dest; +z_streamp source; +{ + struct inflate_state FAR *state; + struct inflate_state FAR *copy; + unsigned char FAR *window; + unsigned wsize; + + /* check input */ + if (dest == Z_NULL || source == Z_NULL || source->state == Z_NULL || + source->zalloc == (alloc_func)0 || source->zfree == (free_func)0) + return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)source->state; + + /* allocate space */ + copy = (struct inflate_state FAR *) + ZALLOC(source, 1, sizeof(struct inflate_state)); + if (copy == Z_NULL) return Z_MEM_ERROR; + window = Z_NULL; + if (state->window != Z_NULL) { + window = (unsigned char FAR *) + ZALLOC(source, 1U << state->wbits, sizeof(unsigned char)); + if (window == Z_NULL) { + ZFREE(source, copy); + return Z_MEM_ERROR; + } + } + + /* copy state */ + zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream)); + zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state)); + if (state->lencode >= state->codes && + state->lencode <= state->codes + ENOUGH - 1) { + copy->lencode = copy->codes + (state->lencode - state->codes); + copy->distcode = copy->codes + (state->distcode - state->codes); + } + copy->next = copy->codes + (state->next - state->codes); + if (window != Z_NULL) { + wsize = 1U << state->wbits; + zmemcpy(window, state->window, wsize); + } + copy->window = window; + dest->state = (struct internal_state FAR *)copy; + return Z_OK; +} + +int ZEXPORT inflateUndermine(strm, subvert) +z_streamp strm; +int subvert; +{ + struct inflate_state FAR *state; + + if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR; + state = (struct inflate_state FAR *)strm->state; + state->sane = !subvert; +#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR + return Z_OK; +#else + state->sane = 1; + return Z_DATA_ERROR; +#endif +} + +long ZEXPORT inflateMark(strm) +z_streamp strm; +{ + struct inflate_state FAR *state; + + if (strm == Z_NULL || strm->state == Z_NULL) return -1L << 16; + state = (struct inflate_state FAR *)strm->state; + return ((long)(state->back) << 16) + + (state->mode == COPY ? state->length : + (state->mode == MATCH ? state->was - state->length : 0)); +} diff --git a/sdk-modifications/libsrc/zlib/inflate.h b/sdk-modifications/libsrc/zlib/inflate.h new file mode 100644 index 0000000..95f4986 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/inflate.h @@ -0,0 +1,122 @@ +/* inflate.h -- internal inflate state definition + * Copyright (C) 1995-2009 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* WARNING: this file should *not* be used by applications. It is + part of the implementation of the compression library and is + subject to change. Applications should only use zlib.h. + */ + +/* define NO_GZIP when compiling if you want to disable gzip header and + trailer decoding by inflate(). NO_GZIP would be used to avoid linking in + the crc code when it is not needed. For shared libraries, gzip decoding + should be left enabled. */ +#ifndef NO_GZIP +# define GUNZIP +#endif + +/* Possible inflate modes between inflate() calls */ +typedef enum { + HEAD, /* i: waiting for magic header */ + FLAGS, /* i: waiting for method and flags (gzip) */ + TIME, /* i: waiting for modification time (gzip) */ + OS, /* i: waiting for extra flags and operating system (gzip) */ + EXLEN, /* i: waiting for extra length (gzip) */ + EXTRA, /* i: waiting for extra bytes (gzip) */ + NAME, /* i: waiting for end of file name (gzip) */ + COMMENT, /* i: waiting for end of comment (gzip) */ + HCRC, /* i: waiting for header crc (gzip) */ + DICTID, /* i: waiting for dictionary check value */ + DICT, /* waiting for inflateSetDictionary() call */ + TYPE, /* i: waiting for type bits, including last-flag bit */ + TYPEDO, /* i: same, but skip check to exit inflate on new block */ + STORED, /* i: waiting for stored size (length and complement) */ + COPY_, /* i/o: same as COPY below, but only first time in */ + COPY, /* i/o: waiting for input or output to copy stored block */ + TABLE, /* i: waiting for dynamic block table lengths */ + LENLENS, /* i: waiting for code length code lengths */ + CODELENS, /* i: waiting for length/lit and distance code lengths */ + LEN_, /* i: same as LEN below, but only first time in */ + LEN, /* i: waiting for length/lit/eob code */ + LENEXT, /* i: waiting for length extra bits */ + DIST, /* i: waiting for distance code */ + DISTEXT, /* i: waiting for distance extra bits */ + MATCH, /* o: waiting for output space to copy string */ + LIT, /* o: waiting for output space to write literal */ + CHECK, /* i: waiting for 32-bit check value */ + LENGTH, /* i: waiting for 32-bit length (gzip) */ + DONE, /* finished check, done -- remain here until reset */ + BAD, /* got a data error -- remain here until reset */ + MEM, /* got an inflate() memory error -- remain here until reset */ + SYNC /* looking for synchronization bytes to restart inflate() */ +} inflate_mode; + +/* + State transitions between above modes - + + (most modes can go to BAD or MEM on error -- not shown for clarity) + + Process header: + HEAD -> (gzip) or (zlib) or (raw) + (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT -> + HCRC -> TYPE + (zlib) -> DICTID or TYPE + DICTID -> DICT -> TYPE + (raw) -> TYPEDO + Read deflate blocks: + TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK + STORED -> COPY_ -> COPY -> TYPE + TABLE -> LENLENS -> CODELENS -> LEN_ + LEN_ -> LEN + Read deflate codes in fixed or dynamic block: + LEN -> LENEXT or LIT or TYPE + LENEXT -> DIST -> DISTEXT -> MATCH -> LEN + LIT -> LEN + Process trailer: + CHECK -> LENGTH -> DONE + */ + +/* state maintained between inflate() calls. Approximately 10K bytes. */ +struct inflate_state { + inflate_mode mode; /* current inflate mode */ + int last; /* true if processing last block */ + int wrap; /* bit 0 true for zlib, bit 1 true for gzip */ + int havedict; /* true if dictionary provided */ + int flags; /* gzip header method and flags (0 if zlib) */ + unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */ + unsigned long check; /* protected copy of check value */ + unsigned long total; /* protected copy of output count */ + gz_headerp head; /* where to save gzip header information */ + /* sliding window */ + unsigned wbits; /* log base 2 of requested window size */ + unsigned wsize; /* window size or zero if not using window */ + unsigned whave; /* valid bytes in the window */ + unsigned wnext; /* window write index */ + unsigned char FAR *window; /* allocated sliding window, if needed */ + /* bit accumulator */ + unsigned long hold; /* input bit accumulator */ + unsigned bits; /* number of bits in "in" */ + /* for string and stored block copying */ + unsigned length; /* literal or length of data to copy */ + unsigned offset; /* distance back to copy string from */ + /* for table and code decoding */ + unsigned extra; /* extra bits needed */ + /* fixed and dynamic code tables */ + code const FAR *lencode; /* starting table for length/literal codes */ + code const FAR *distcode; /* starting table for distance codes */ + unsigned lenbits; /* index bits for lencode */ + unsigned distbits; /* index bits for distcode */ + /* dynamic table building */ + unsigned ncode; /* number of code length code lengths */ + unsigned nlen; /* number of length code lengths */ + unsigned ndist; /* number of distance code lengths */ + unsigned have; /* number of code lengths in lens[] */ + code FAR *next; /* next available space in codes[] */ + unsigned short lens[320]; /* temporary storage for code lengths */ + unsigned short work[288]; /* work area for code table building */ + code codes[ENOUGH]; /* space for code tables */ + int sane; /* if false, allow invalid distance too far */ + int back; /* bits back of last unprocessed length/lit */ + unsigned was; /* initial length of match */ +}; diff --git a/sdk-modifications/libsrc/zlib/inftrees.c b/sdk-modifications/libsrc/zlib/inftrees.c new file mode 100644 index 0000000..60bbd58 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/inftrees.c @@ -0,0 +1,306 @@ +/* inftrees.c -- generate Huffman trees for efficient decoding + * Copyright (C) 1995-2012 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +#include "zutil.h" +#include "inftrees.h" + +#define MAXBITS 15 + +const char inflate_copyright[] = + " inflate 1.2.6 Copyright 1995-2012 Mark Adler "; +/* + If you use the zlib library in a product, an acknowledgment is welcome + in the documentation of your product. If for some reason you cannot + include such an acknowledgment, I would appreciate that you keep this + copyright string in the executable of your product. + */ + +/* + Build a set of tables to decode the provided canonical Huffman code. + The code lengths are lens[0..codes-1]. The result starts at *table, + whose indices are 0..2^bits-1. work is a writable array of at least + lens shorts, which is used as a work area. type is the type of code + to be generated, CODES, LENS, or DISTS. On return, zero is success, + -1 is an invalid code, and +1 means that ENOUGH isn't enough. table + on return points to the next available entry's address. bits is the + requested root table index bits, and on return it is the actual root + table index bits. It will differ if the request is greater than the + longest code or if it is less than the shortest code. + */ +int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work) +codetype type; +unsigned short FAR *lens; +unsigned codes; +code FAR * FAR *table; +unsigned FAR *bits; +unsigned short FAR *work; +{ + unsigned len; /* a code's length in bits */ + unsigned sym; /* index of code symbols */ + unsigned min, max; /* minimum and maximum code lengths */ + unsigned root; /* number of index bits for root table */ + unsigned curr; /* number of index bits for current table */ + unsigned drop; /* code bits to drop for sub-table */ + int left; /* number of prefix codes available */ + unsigned used; /* code entries in table used */ + unsigned huff; /* Huffman code */ + unsigned incr; /* for incrementing code, index */ + unsigned fill; /* index for replicating entries */ + unsigned low; /* low bits for current root entry */ + unsigned mask; /* mask for low root bits */ + code here; /* table entry for duplication */ + code FAR *next; /* next available space in table */ + const unsigned short FAR *base; /* base value table to use */ + const unsigned short FAR *extra; /* extra bits table to use */ + int end; /* use base and extra for symbol > end */ + unsigned short count[MAXBITS+1]; /* number of codes of each length */ + unsigned short offs[MAXBITS+1]; /* offsets in table for each length */ + static const unsigned short lbase[31] = { /* Length codes 257..285 base */ + 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, + 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0}; + static const unsigned short lext[31] = { /* Length codes 257..285 extra */ + 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18, + 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 203, 69}; + static const unsigned short dbase[32] = { /* Distance codes 0..29 base */ + 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, + 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, + 8193, 12289, 16385, 24577, 0, 0}; + static const unsigned short dext[32] = { /* Distance codes 0..29 extra */ + 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, + 23, 23, 24, 24, 25, 25, 26, 26, 27, 27, + 28, 28, 29, 29, 64, 64}; + + /* + Process a set of code lengths to create a canonical Huffman code. The + code lengths are lens[0..codes-1]. Each length corresponds to the + symbols 0..codes-1. The Huffman code is generated by first sorting the + symbols by length from short to long, and retaining the symbol order + for codes with equal lengths. Then the code starts with all zero bits + for the first code of the shortest length, and the codes are integer + increments for the same length, and zeros are appended as the length + increases. For the deflate format, these bits are stored backwards + from their more natural integer increment ordering, and so when the + decoding tables are built in the large loop below, the integer codes + are incremented backwards. + + This routine assumes, but does not check, that all of the entries in + lens[] are in the range 0..MAXBITS. The caller must assure this. + 1..MAXBITS is interpreted as that code length. zero means that that + symbol does not occur in this code. + + The codes are sorted by computing a count of codes for each length, + creating from that a table of starting indices for each length in the + sorted table, and then entering the symbols in order in the sorted + table. The sorted table is work[], with that space being provided by + the caller. + + The length counts are used for other purposes as well, i.e. finding + the minimum and maximum length codes, determining if there are any + codes at all, checking for a valid set of lengths, and looking ahead + at length counts to determine sub-table sizes when building the + decoding tables. + */ + + /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */ + for (len = 0; len <= MAXBITS; len++) + count[len] = 0; + for (sym = 0; sym < codes; sym++) + count[lens[sym]]++; + + /* bound code lengths, force root to be within code lengths */ + root = *bits; + for (max = MAXBITS; max >= 1; max--) + if (count[max] != 0) break; + if (root > max) root = max; + if (max == 0) { /* no symbols to code at all */ + here.op = (unsigned char)64; /* invalid code marker */ + here.bits = (unsigned char)1; + here.val = (unsigned short)0; + *(*table)++ = here; /* make a table to force an error */ + *(*table)++ = here; + *bits = 1; + return 0; /* no symbols, but wait for decoding to report error */ + } + for (min = 1; min < max; min++) + if (count[min] != 0) break; + if (root < min) root = min; + + /* check for an over-subscribed or incomplete set of lengths */ + left = 1; + for (len = 1; len <= MAXBITS; len++) { + left <<= 1; + left -= count[len]; + if (left < 0) return -1; /* over-subscribed */ + } + if (left > 0 && (type == CODES || max != 1)) + return -1; /* incomplete set */ + + /* generate offsets into symbol table for each length for sorting */ + offs[1] = 0; + for (len = 1; len < MAXBITS; len++) + offs[len + 1] = offs[len] + count[len]; + + /* sort symbols by length, by symbol order within each length */ + for (sym = 0; sym < codes; sym++) + if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym; + + /* + Create and fill in decoding tables. In this loop, the table being + filled is at next and has curr index bits. The code being used is huff + with length len. That code is converted to an index by dropping drop + bits off of the bottom. For codes where len is less than drop + curr, + those top drop + curr - len bits are incremented through all values to + fill the table with replicated entries. + + root is the number of index bits for the root table. When len exceeds + root, sub-tables are created pointed to by the root entry with an index + of the low root bits of huff. This is saved in low to check for when a + new sub-table should be started. drop is zero when the root table is + being filled, and drop is root when sub-tables are being filled. + + When a new sub-table is needed, it is necessary to look ahead in the + code lengths to determine what size sub-table is needed. The length + counts are used for this, and so count[] is decremented as codes are + entered in the tables. + + used keeps track of how many table entries have been allocated from the + provided *table space. It is checked for LENS and DIST tables against + the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in + the initial root table size constants. See the comments in inftrees.h + for more information. + + sym increments through all symbols, and the loop terminates when + all codes of length max, i.e. all codes, have been processed. This + routine permits incomplete codes, so another loop after this one fills + in the rest of the decoding tables with invalid code markers. + */ + + /* set up for code type */ + switch (type) { + case CODES: + base = extra = work; /* dummy value--not used */ + end = 19; + break; + case LENS: + base = lbase; + base -= 257; + extra = lext; + extra -= 257; + end = 256; + break; + default: /* DISTS */ + base = dbase; + extra = dext; + end = -1; + } + + /* initialize state for loop */ + huff = 0; /* starting code */ + sym = 0; /* starting code symbol */ + len = min; /* starting code length */ + next = *table; /* current table to fill in */ + curr = root; /* current table index bits */ + drop = 0; /* current bits to drop from code for index */ + low = (unsigned)(-1); /* trigger new sub-table when len > root */ + used = 1U << root; /* use root table entries */ + mask = used - 1; /* mask for comparing low */ + + /* check available table space */ + if ((type == LENS && used >= ENOUGH_LENS) || + (type == DISTS && used >= ENOUGH_DISTS)) + return 1; + + /* process all codes and make table entries */ + for (;;) { + /* create table entry */ + here.bits = (unsigned char)(len - drop); + if ((int)(work[sym]) < end) { + here.op = (unsigned char)0; + here.val = work[sym]; + } + else if ((int)(work[sym]) > end) { + here.op = (unsigned char)(extra[work[sym]]); + here.val = base[work[sym]]; + } + else { + here.op = (unsigned char)(32 + 64); /* end of block */ + here.val = 0; + } + + /* replicate for those indices with low len bits equal to huff */ + incr = 1U << (len - drop); + fill = 1U << curr; + min = fill; /* save offset to next table */ + do { + fill -= incr; + next[(huff >> drop) + fill] = here; + } while (fill != 0); + + /* backwards increment the len-bit code huff */ + incr = 1U << (len - 1); + while (huff & incr) + incr >>= 1; + if (incr != 0) { + huff &= incr - 1; + huff += incr; + } + else + huff = 0; + + /* go to next symbol, update count, len */ + sym++; + if (--(count[len]) == 0) { + if (len == max) break; + len = lens[work[sym]]; + } + + /* create new sub-table if needed */ + if (len > root && (huff & mask) != low) { + /* if first time, transition to sub-tables */ + if (drop == 0) + drop = root; + + /* increment past last table */ + next += min; /* here min is 1 << curr */ + + /* determine length of next table */ + curr = len - drop; + left = (int)(1 << curr); + while (curr + drop < max) { + left -= count[curr + drop]; + if (left <= 0) break; + curr++; + left <<= 1; + } + + /* check for enough space */ + used += 1U << curr; + if ((type == LENS && used >= ENOUGH_LENS) || + (type == DISTS && used >= ENOUGH_DISTS)) + return 1; + + /* point entry in root table to sub-table */ + low = huff & mask; + (*table)[low].op = (unsigned char)curr; + (*table)[low].bits = (unsigned char)root; + (*table)[low].val = (unsigned short)(next - *table); + } + } + + /* fill in remaining table entry if code is incomplete (guaranteed to have + at most one remaining entry, since if the code is incomplete, the + maximum code length that was allowed to get this far is one bit) */ + if (huff != 0) { + here.op = (unsigned char)64; /* invalid code marker */ + here.bits = (unsigned char)(len - drop); + here.val = (unsigned short)0; + next[huff] = here; + } + + /* set return parameters */ + *table += used; + *bits = root; + return 0; +} diff --git a/sdk-modifications/libsrc/zlib/inftrees.h b/sdk-modifications/libsrc/zlib/inftrees.h new file mode 100644 index 0000000..baa53a0 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/inftrees.h @@ -0,0 +1,62 @@ +/* inftrees.h -- header to use inftrees.c + * Copyright (C) 1995-2005, 2010 Mark Adler + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* WARNING: this file should *not* be used by applications. It is + part of the implementation of the compression library and is + subject to change. Applications should only use zlib.h. + */ + +/* Structure for decoding tables. Each entry provides either the + information needed to do the operation requested by the code that + indexed that table entry, or it provides a pointer to another + table that indexes more bits of the code. op indicates whether + the entry is a pointer to another table, a literal, a length or + distance, an end-of-block, or an invalid code. For a table + pointer, the low four bits of op is the number of index bits of + that table. For a length or distance, the low four bits of op + is the number of extra bits to get after the code. bits is + the number of bits in this code or part of the code to drop off + of the bit buffer. val is the actual byte to output in the case + of a literal, the base length or distance, or the offset from + the current table to the next table. Each entry is four bytes. */ +typedef struct { + unsigned char op; /* operation, extra bits, table bits */ + unsigned char bits; /* bits in this part of the code */ + unsigned short val; /* offset in table or code value */ +} code; + +/* op values as set by inflate_table(): + 00000000 - literal + 0000tttt - table link, tttt != 0 is the number of table index bits + 0001eeee - length or distance, eeee is the number of extra bits + 01100000 - end of block + 01000000 - invalid code + */ + +/* Maximum size of the dynamic table. The maximum number of code structures is + 1444, which is the sum of 852 for literal/length codes and 592 for distance + codes. These values were found by exhaustive searches using the program + examples/enough.c found in the zlib distribtution. The arguments to that + program are the number of symbols, the initial root table size, and the + maximum bit length of a code. "enough 286 9 15" for literal/length codes + returns returns 852, and "enough 30 6 15" for distance codes returns 592. + The initial root table size (9 or 6) is found in the fifth argument of the + inflate_table() calls in inflate.c and infback.c. If the root table size is + changed, then these maximum sizes would be need to be recalculated and + updated. */ +#define ENOUGH_LENS 852 +#define ENOUGH_DISTS 592 +#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS) + +/* Type of code to build for inflate_table() */ +typedef enum { + CODES, + LENS, + DISTS +} codetype; + +int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens, + unsigned codes, code FAR * FAR *table, + unsigned FAR *bits, unsigned short FAR *work)); diff --git a/sdk-modifications/libsrc/zlib/trees.c b/sdk-modifications/libsrc/zlib/trees.c new file mode 100644 index 0000000..8c32b21 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/trees.c @@ -0,0 +1,1224 @@ +/* trees.c -- output deflated data using Huffman coding + * Copyright (C) 1995-2012 Jean-loup Gailly + * detect_data_type() function provided freely by Cosmin Truta, 2006 + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* + * ALGORITHM + * + * The "deflation" process uses several Huffman trees. The more + * common source values are represented by shorter bit sequences. + * + * Each code tree is stored in a compressed form which is itself + * a Huffman encoding of the lengths of all the code strings (in + * ascending order by source values). The actual code strings are + * reconstructed from the lengths in the inflate process, as described + * in the deflate specification. + * + * REFERENCES + * + * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification". + * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc + * + * Storer, James A. + * Data Compression: Methods and Theory, pp. 49-50. + * Computer Science Press, 1988. ISBN 0-7167-8156-5. + * + * Sedgewick, R. + * Algorithms, p290. + * Addison-Wesley, 1983. ISBN 0-201-06672-6. + */ + +/* @(#) $Id$ */ + +/* #define GEN_TREES_H */ + +#include "deflate.h" + +#ifdef DEBUG +# include <ctype.h> +#endif + +/* =========================================================================== + * Constants + */ + +#define MAX_BL_BITS 7 +/* Bit length codes must not exceed MAX_BL_BITS bits */ + +#define END_BLOCK 256 +/* end of block literal code */ + +#define REP_3_6 16 +/* repeat previous bit length 3-6 times (2 bits of repeat count) */ + +#define REPZ_3_10 17 +/* repeat a zero length 3-10 times (3 bits of repeat count) */ + +#define REPZ_11_138 18 +/* repeat a zero length 11-138 times (7 bits of repeat count) */ + +local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */ + = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0}; + +local const int extra_dbits[D_CODES] /* extra bits for each distance code */ + = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; + +local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */ + = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7}; + +local const uch bl_order[BL_CODES] + = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15}; +/* The lengths of the bit length codes are sent in order of decreasing + * probability, to avoid transmitting the lengths for unused bit length codes. + */ + +/* =========================================================================== + * Local data. These are initialized only once. + */ + +#define DIST_CODE_LEN 512 /* see definition of array dist_code below */ + +#if defined(GEN_TREES_H) || !defined(STDC) +/* non ANSI compilers may not accept trees.h */ + +local ct_data static_ltree[L_CODES+2]; +/* The static literal tree. Since the bit lengths are imposed, there is no + * need for the L_CODES extra codes used during heap construction. However + * The codes 286 and 287 are needed to build a canonical tree (see _tr_init + * below). + */ + +local ct_data static_dtree[D_CODES]; +/* The static distance tree. (Actually a trivial tree since all codes use + * 5 bits.) + */ + +uch _dist_code[DIST_CODE_LEN]; +/* Distance codes. The first 256 values correspond to the distances + * 3 .. 258, the last 256 values correspond to the top 8 bits of + * the 15 bit distances. + */ + +uch _length_code[MAX_MATCH-MIN_MATCH+1]; +/* length code for each normalized match length (0 == MIN_MATCH) */ + +local int base_length[LENGTH_CODES]; +/* First normalized length for each code (0 = MIN_MATCH) */ + +local int base_dist[D_CODES]; +/* First normalized distance for each code (0 = distance of 1) */ + +#else +# include "trees.h" +#endif /* GEN_TREES_H */ + +struct static_tree_desc_s { + const ct_data *static_tree; /* static tree or NULL */ + const intf *extra_bits; /* extra bits for each code or NULL */ + int extra_base; /* base index for extra_bits */ + int elems; /* max number of elements in the tree */ + int max_length; /* max bit length for the codes */ +}; + +local static_tree_desc static_l_desc = +{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS}; + +local static_tree_desc static_d_desc = +{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS}; + +local static_tree_desc static_bl_desc = +{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS}; + +/* =========================================================================== + * Local (static) routines in this file. + */ + +local void tr_static_init OF((void)); +local void init_block OF((deflate_state *s)); +local void pqdownheap OF((deflate_state *s, ct_data *tree, int k)); +local void gen_bitlen OF((deflate_state *s, tree_desc *desc)); +local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count)); +local void build_tree OF((deflate_state *s, tree_desc *desc)); +local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code)); +local void send_tree OF((deflate_state *s, ct_data *tree, int max_code)); +local int build_bl_tree OF((deflate_state *s)); +local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes, + int blcodes)); +local void compress_block OF((deflate_state *s, ct_data *ltree, + ct_data *dtree)); +local int detect_data_type OF((deflate_state *s)); +local unsigned bi_reverse OF((unsigned value, int length)); +local void bi_windup OF((deflate_state *s)); +local void bi_flush OF((deflate_state *s)); +local void copy_block OF((deflate_state *s, charf *buf, unsigned len, + int header)); + +#ifdef GEN_TREES_H +local void gen_trees_header OF((void)); +#endif + +#ifndef DEBUG +# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len) + /* Send a code of the given tree. c and tree must not have side effects */ + +#else /* DEBUG */ +# define send_code(s, c, tree) \ + { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \ + send_bits(s, tree[c].Code, tree[c].Len); } +#endif + +/* =========================================================================== + * Output a short LSB first on the stream. + * IN assertion: there is enough room in pendingBuf. + */ +#define put_short(s, w) { \ + put_byte(s, (uch)((w) & 0xff)); \ + put_byte(s, (uch)((ush)(w) >> 8)); \ +} + +/* =========================================================================== + * Send a value on a given number of bits. + * IN assertion: length <= 16 and value fits in length bits. + */ +#ifdef DEBUG +local void send_bits OF((deflate_state *s, int value, int length)); + +local void send_bits(s, value, length) + deflate_state *s; + int value; /* value to send */ + int length; /* number of bits */ +{ + Tracevv((stderr," l %2d v %4x ", length, value)); + Assert(length > 0 && length <= 15, "invalid length"); + s->bits_sent += (ulg)length; + + /* If not enough room in bi_buf, use (valid) bits from bi_buf and + * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid)) + * unused bits in value. + */ + if (s->bi_valid > (int)Buf_size - length) { + s->bi_buf |= (ush)value << s->bi_valid; + put_short(s, s->bi_buf); + s->bi_buf = (ush)value >> (Buf_size - s->bi_valid); + s->bi_valid += length - Buf_size; + } else { + s->bi_buf |= (ush)value << s->bi_valid; + s->bi_valid += length; + } +} +#else /* !DEBUG */ + +#define send_bits(s, value, length) \ +{ int len = length;\ + if (s->bi_valid > (int)Buf_size - len) {\ + int val = value;\ + s->bi_buf |= (ush)val << s->bi_valid;\ + put_short(s, s->bi_buf);\ + s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\ + s->bi_valid += len - Buf_size;\ + } else {\ + s->bi_buf |= (ush)(value) << s->bi_valid;\ + s->bi_valid += len;\ + }\ +} +#endif /* DEBUG */ + + +/* the arguments must not have side effects */ + +/* =========================================================================== + * Initialize the various 'constant' tables. + */ +local void tr_static_init() +{ +#if defined(GEN_TREES_H) || !defined(STDC) + static int static_init_done = 0; + int n; /* iterates over tree elements */ + int bits; /* bit counter */ + int length; /* length value */ + int code; /* code value */ + int dist; /* distance index */ + ush bl_count[MAX_BITS+1]; + /* number of codes at each bit length for an optimal tree */ + + if (static_init_done) return; + + /* For some embedded targets, global variables are not initialized: */ +#ifdef NO_INIT_GLOBAL_POINTERS + static_l_desc.static_tree = static_ltree; + static_l_desc.extra_bits = extra_lbits; + static_d_desc.static_tree = static_dtree; + static_d_desc.extra_bits = extra_dbits; + static_bl_desc.extra_bits = extra_blbits; +#endif + + /* Initialize the mapping length (0..255) -> length code (0..28) */ + length = 0; + for (code = 0; code < LENGTH_CODES-1; code++) { + base_length[code] = length; + for (n = 0; n < (1<<extra_lbits[code]); n++) { + _length_code[length++] = (uch)code; + } + } + Assert (length == 256, "tr_static_init: length != 256"); + /* Note that the length 255 (match length 258) can be represented + * in two different ways: code 284 + 5 bits or code 285, so we + * overwrite length_code[255] to use the best encoding: + */ + _length_code[length-1] = (uch)code; + + /* Initialize the mapping dist (0..32K) -> dist code (0..29) */ + dist = 0; + for (code = 0 ; code < 16; code++) { + base_dist[code] = dist; + for (n = 0; n < (1<<extra_dbits[code]); n++) { + _dist_code[dist++] = (uch)code; + } + } + Assert (dist == 256, "tr_static_init: dist != 256"); + dist >>= 7; /* from now on, all distances are divided by 128 */ + for ( ; code < D_CODES; code++) { + base_dist[code] = dist << 7; + for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) { + _dist_code[256 + dist++] = (uch)code; + } + } + Assert (dist == 256, "tr_static_init: 256+dist != 512"); + + /* Construct the codes of the static literal tree */ + for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0; + n = 0; + while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++; + while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++; + while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++; + while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++; + /* Codes 286 and 287 do not exist, but we must include them in the + * tree construction to get a canonical Huffman tree (longest code + * all ones) + */ + gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count); + + /* The static distance tree is trivial: */ + for (n = 0; n < D_CODES; n++) { + static_dtree[n].Len = 5; + static_dtree[n].Code = bi_reverse((unsigned)n, 5); + } + static_init_done = 1; + +# ifdef GEN_TREES_H + gen_trees_header(); +# endif +#endif /* defined(GEN_TREES_H) || !defined(STDC) */ +} + +/* =========================================================================== + * Genererate the file trees.h describing the static trees. + */ +#ifdef GEN_TREES_H +# ifndef DEBUG +# include <stdio.h> +# endif + +# define SEPARATOR(i, last, width) \ + ((i) == (last)? "\n};\n\n" : \ + ((i) % (width) == (width)-1 ? ",\n" : ", ")) + +void gen_trees_header() +{ + FILE *header = fopen("trees.h", "w"); + int i; + + Assert (header != NULL, "Can't open trees.h"); + fprintf(header, + "/* header created automatically with -DGEN_TREES_H */\n\n"); + + fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n"); + for (i = 0; i < L_CODES+2; i++) { + fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code, + static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5)); + } + + fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n"); + for (i = 0; i < D_CODES; i++) { + fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code, + static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5)); + } + + fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n"); + for (i = 0; i < DIST_CODE_LEN; i++) { + fprintf(header, "%2u%s", _dist_code[i], + SEPARATOR(i, DIST_CODE_LEN-1, 20)); + } + + fprintf(header, + "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n"); + for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) { + fprintf(header, "%2u%s", _length_code[i], + SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20)); + } + + fprintf(header, "local const int base_length[LENGTH_CODES] = {\n"); + for (i = 0; i < LENGTH_CODES; i++) { + fprintf(header, "%1u%s", base_length[i], + SEPARATOR(i, LENGTH_CODES-1, 20)); + } + + fprintf(header, "local const int base_dist[D_CODES] = {\n"); + for (i = 0; i < D_CODES; i++) { + fprintf(header, "%5u%s", base_dist[i], + SEPARATOR(i, D_CODES-1, 10)); + } + + fclose(header); +} +#endif /* GEN_TREES_H */ + +/* =========================================================================== + * Initialize the tree data structures for a new zlib stream. + */ +void ZLIB_INTERNAL _tr_init(s) + deflate_state *s; +{ + tr_static_init(); + + s->l_desc.dyn_tree = s->dyn_ltree; + s->l_desc.stat_desc = &static_l_desc; + + s->d_desc.dyn_tree = s->dyn_dtree; + s->d_desc.stat_desc = &static_d_desc; + + s->bl_desc.dyn_tree = s->bl_tree; + s->bl_desc.stat_desc = &static_bl_desc; + + s->bi_buf = 0; + s->bi_valid = 0; +#ifdef DEBUG + s->compressed_len = 0L; + s->bits_sent = 0L; +#endif + + /* Initialize the first block of the first file: */ + init_block(s); +} + +/* =========================================================================== + * Initialize a new block. + */ +local void init_block(s) + deflate_state *s; +{ + int n; /* iterates over tree elements */ + + /* Initialize the trees. */ + for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0; + for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0; + for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0; + + s->dyn_ltree[END_BLOCK].Freq = 1; + s->opt_len = s->static_len = 0L; + s->last_lit = s->matches = 0; +} + +#define SMALLEST 1 +/* Index within the heap array of least frequent node in the Huffman tree */ + + +/* =========================================================================== + * Remove the smallest element from the heap and recreate the heap with + * one less element. Updates heap and heap_len. + */ +#define pqremove(s, tree, top) \ +{\ + top = s->heap[SMALLEST]; \ + s->heap[SMALLEST] = s->heap[s->heap_len--]; \ + pqdownheap(s, tree, SMALLEST); \ +} + +/* =========================================================================== + * Compares to subtrees, using the tree depth as tie breaker when + * the subtrees have equal frequency. This minimizes the worst case length. + */ +#define smaller(tree, n, m, depth) \ + (tree[n].Freq < tree[m].Freq || \ + (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m])) + +/* =========================================================================== + * Restore the heap property by moving down the tree starting at node k, + * exchanging a node with the smallest of its two sons if necessary, stopping + * when the heap property is re-established (each father smaller than its + * two sons). + */ +local void pqdownheap(s, tree, k) + deflate_state *s; + ct_data *tree; /* the tree to restore */ + int k; /* node to move down */ +{ + int v = s->heap[k]; + int j = k << 1; /* left son of k */ + while (j <= s->heap_len) { + /* Set j to the smallest of the two sons: */ + if (j < s->heap_len && + smaller(tree, s->heap[j+1], s->heap[j], s->depth)) { + j++; + } + /* Exit if v is smaller than both sons */ + if (smaller(tree, v, s->heap[j], s->depth)) break; + + /* Exchange v with the smallest son */ + s->heap[k] = s->heap[j]; k = j; + + /* And continue down the tree, setting j to the left son of k */ + j <<= 1; + } + s->heap[k] = v; +} + +/* =========================================================================== + * Compute the optimal bit lengths for a tree and update the total bit length + * for the current block. + * IN assertion: the fields freq and dad are set, heap[heap_max] and + * above are the tree nodes sorted by increasing frequency. + * OUT assertions: the field len is set to the optimal bit length, the + * array bl_count contains the frequencies for each bit length. + * The length opt_len is updated; static_len is also updated if stree is + * not null. + */ +local void gen_bitlen(s, desc) + deflate_state *s; + tree_desc *desc; /* the tree descriptor */ +{ + ct_data *tree = desc->dyn_tree; + int max_code = desc->max_code; + const ct_data *stree = desc->stat_desc->static_tree; + const intf *extra = desc->stat_desc->extra_bits; + int base = desc->stat_desc->extra_base; + int max_length = desc->stat_desc->max_length; + int h; /* heap index */ + int n, m; /* iterate over the tree elements */ + int bits; /* bit length */ + int xbits; /* extra bits */ + ush f; /* frequency */ + int overflow = 0; /* number of elements with bit length too large */ + + for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0; + + /* In a first pass, compute the optimal bit lengths (which may + * overflow in the case of the bit length tree). + */ + tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */ + + for (h = s->heap_max+1; h < HEAP_SIZE; h++) { + n = s->heap[h]; + bits = tree[tree[n].Dad].Len + 1; + if (bits > max_length) bits = max_length, overflow++; + tree[n].Len = (ush)bits; + /* We overwrite tree[n].Dad which is no longer needed */ + + if (n > max_code) continue; /* not a leaf node */ + + s->bl_count[bits]++; + xbits = 0; + if (n >= base) xbits = extra[n-base]; + f = tree[n].Freq; + s->opt_len += (ulg)f * (bits + xbits); + if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits); + } + if (overflow == 0) return; + + Trace((stderr,"\nbit length overflow\n")); + /* This happens for example on obj2 and pic of the Calgary corpus */ + + /* Find the first bit length which could increase: */ + do { + bits = max_length-1; + while (s->bl_count[bits] == 0) bits--; + s->bl_count[bits]--; /* move one leaf down the tree */ + s->bl_count[bits+1] += 2; /* move one overflow item as its brother */ + s->bl_count[max_length]--; + /* The brother of the overflow item also moves one step up, + * but this does not affect bl_count[max_length] + */ + overflow -= 2; + } while (overflow > 0); + + /* Now recompute all bit lengths, scanning in increasing frequency. + * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all + * lengths instead of fixing only the wrong ones. This idea is taken + * from 'ar' written by Haruhiko Okumura.) + */ + for (bits = max_length; bits != 0; bits--) { + n = s->bl_count[bits]; + while (n != 0) { + m = s->heap[--h]; + if (m > max_code) continue; + if ((unsigned) tree[m].Len != (unsigned) bits) { + Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits)); + s->opt_len += ((long)bits - (long)tree[m].Len) + *(long)tree[m].Freq; + tree[m].Len = (ush)bits; + } + n--; + } + } +} + +/* =========================================================================== + * Generate the codes for a given tree and bit counts (which need not be + * optimal). + * IN assertion: the array bl_count contains the bit length statistics for + * the given tree and the field len is set for all tree elements. + * OUT assertion: the field code is set for all tree elements of non + * zero code length. + */ +local void gen_codes (tree, max_code, bl_count) + ct_data *tree; /* the tree to decorate */ + int max_code; /* largest code with non zero frequency */ + ushf *bl_count; /* number of codes at each bit length */ +{ + ush next_code[MAX_BITS+1]; /* next code value for each bit length */ + ush code = 0; /* running code value */ + int bits; /* bit index */ + int n; /* code index */ + + /* The distribution counts are first used to generate the code values + * without bit reversal. + */ + for (bits = 1; bits <= MAX_BITS; bits++) { + next_code[bits] = code = (code + bl_count[bits-1]) << 1; + } + /* Check that the bit counts in bl_count are consistent. The last code + * must be all ones. + */ + Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1, + "inconsistent bit counts"); + Tracev((stderr,"\ngen_codes: max_code %d ", max_code)); + + for (n = 0; n <= max_code; n++) { + int len = tree[n].Len; + if (len == 0) continue; + /* Now reverse the bits */ + tree[n].Code = bi_reverse(next_code[len]++, len); + + Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ", + n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1)); + } +} + +/* =========================================================================== + * Construct one Huffman tree and assigns the code bit strings and lengths. + * Update the total bit length for the current block. + * IN assertion: the field freq is set for all tree elements. + * OUT assertions: the fields len and code are set to the optimal bit length + * and corresponding code. The length opt_len is updated; static_len is + * also updated if stree is not null. The field max_code is set. + */ +local void build_tree(s, desc) + deflate_state *s; + tree_desc *desc; /* the tree descriptor */ +{ + ct_data *tree = desc->dyn_tree; + const ct_data *stree = desc->stat_desc->static_tree; + int elems = desc->stat_desc->elems; + int n, m; /* iterate over heap elements */ + int max_code = -1; /* largest code with non zero frequency */ + int node; /* new node being created */ + + /* Construct the initial heap, with least frequent element in + * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1]. + * heap[0] is not used. + */ + s->heap_len = 0, s->heap_max = HEAP_SIZE; + + for (n = 0; n < elems; n++) { + if (tree[n].Freq != 0) { + s->heap[++(s->heap_len)] = max_code = n; + s->depth[n] = 0; + } else { + tree[n].Len = 0; + } + } + + /* The pkzip format requires that at least one distance code exists, + * and that at least one bit should be sent even if there is only one + * possible code. So to avoid special checks later on we force at least + * two codes of non zero frequency. + */ + while (s->heap_len < 2) { + node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0); + tree[node].Freq = 1; + s->depth[node] = 0; + s->opt_len--; if (stree) s->static_len -= stree[node].Len; + /* node is 0 or 1 so it does not have extra bits */ + } + desc->max_code = max_code; + + /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree, + * establish sub-heaps of increasing lengths: + */ + for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n); + + /* Construct the Huffman tree by repeatedly combining the least two + * frequent nodes. + */ + node = elems; /* next internal node of the tree */ + do { + pqremove(s, tree, n); /* n = node of least frequency */ + m = s->heap[SMALLEST]; /* m = node of next least frequency */ + + s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */ + s->heap[--(s->heap_max)] = m; + + /* Create a new node father of n and m */ + tree[node].Freq = tree[n].Freq + tree[m].Freq; + s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ? + s->depth[n] : s->depth[m]) + 1); + tree[n].Dad = tree[m].Dad = (ush)node; +#ifdef DUMP_BL_TREE + if (tree == s->bl_tree) { + fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)", + node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq); + } +#endif + /* and insert the new node in the heap */ + s->heap[SMALLEST] = node++; + pqdownheap(s, tree, SMALLEST); + + } while (s->heap_len >= 2); + + s->heap[--(s->heap_max)] = s->heap[SMALLEST]; + + /* At this point, the fields freq and dad are set. We can now + * generate the bit lengths. + */ + gen_bitlen(s, (tree_desc *)desc); + + /* The field len is now set, we can generate the bit codes */ + gen_codes ((ct_data *)tree, max_code, s->bl_count); +} + +/* =========================================================================== + * Scan a literal or distance tree to determine the frequencies of the codes + * in the bit length tree. + */ +local void scan_tree (s, tree, max_code) + deflate_state *s; + ct_data *tree; /* the tree to be scanned */ + int max_code; /* and its largest code of non zero frequency */ +{ + int n; /* iterates over all tree elements */ + int prevlen = -1; /* last emitted length */ + int curlen; /* length of current code */ + int nextlen = tree[0].Len; /* length of next code */ + int count = 0; /* repeat count of the current code */ + int max_count = 7; /* max repeat count */ + int min_count = 4; /* min repeat count */ + + if (nextlen == 0) max_count = 138, min_count = 3; + tree[max_code+1].Len = (ush)0xffff; /* guard */ + + for (n = 0; n <= max_code; n++) { + curlen = nextlen; nextlen = tree[n+1].Len; + if (++count < max_count && curlen == nextlen) { + continue; + } else if (count < min_count) { + s->bl_tree[curlen].Freq += count; + } else if (curlen != 0) { + if (curlen != prevlen) s->bl_tree[curlen].Freq++; + s->bl_tree[REP_3_6].Freq++; + } else if (count <= 10) { + s->bl_tree[REPZ_3_10].Freq++; + } else { + s->bl_tree[REPZ_11_138].Freq++; + } + count = 0; prevlen = curlen; + if (nextlen == 0) { + max_count = 138, min_count = 3; + } else if (curlen == nextlen) { + max_count = 6, min_count = 3; + } else { + max_count = 7, min_count = 4; + } + } +} + +/* =========================================================================== + * Send a literal or distance tree in compressed form, using the codes in + * bl_tree. + */ +local void send_tree (s, tree, max_code) + deflate_state *s; + ct_data *tree; /* the tree to be scanned */ + int max_code; /* and its largest code of non zero frequency */ +{ + int n; /* iterates over all tree elements */ + int prevlen = -1; /* last emitted length */ + int curlen; /* length of current code */ + int nextlen = tree[0].Len; /* length of next code */ + int count = 0; /* repeat count of the current code */ + int max_count = 7; /* max repeat count */ + int min_count = 4; /* min repeat count */ + + /* tree[max_code+1].Len = -1; */ /* guard already set */ + if (nextlen == 0) max_count = 138, min_count = 3; + + for (n = 0; n <= max_code; n++) { + curlen = nextlen; nextlen = tree[n+1].Len; + if (++count < max_count && curlen == nextlen) { + continue; + } else if (count < min_count) { + do { send_code(s, curlen, s->bl_tree); } while (--count != 0); + + } else if (curlen != 0) { + if (curlen != prevlen) { + send_code(s, curlen, s->bl_tree); count--; + } + Assert(count >= 3 && count <= 6, " 3_6?"); + send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2); + + } else if (count <= 10) { + send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3); + + } else { + send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7); + } + count = 0; prevlen = curlen; + if (nextlen == 0) { + max_count = 138, min_count = 3; + } else if (curlen == nextlen) { + max_count = 6, min_count = 3; + } else { + max_count = 7, min_count = 4; + } + } +} + +/* =========================================================================== + * Construct the Huffman tree for the bit lengths and return the index in + * bl_order of the last bit length code to send. + */ +local int build_bl_tree(s) + deflate_state *s; +{ + int max_blindex; /* index of last bit length code of non zero freq */ + + /* Determine the bit length frequencies for literal and distance trees */ + scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code); + scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code); + + /* Build the bit length tree: */ + build_tree(s, (tree_desc *)(&(s->bl_desc))); + /* opt_len now includes the length of the tree representations, except + * the lengths of the bit lengths codes and the 5+5+4 bits for the counts. + */ + + /* Determine the number of bit length codes to send. The pkzip format + * requires that at least 4 bit length codes be sent. (appnote.txt says + * 3 but the actual value used is 4.) + */ + for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) { + if (s->bl_tree[bl_order[max_blindex]].Len != 0) break; + } + /* Update opt_len to include the bit length tree and counts */ + s->opt_len += 3*(max_blindex+1) + 5+5+4; + Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld", + s->opt_len, s->static_len)); + + return max_blindex; +} + +/* =========================================================================== + * Send the header for a block using dynamic Huffman trees: the counts, the + * lengths of the bit length codes, the literal tree and the distance tree. + * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4. + */ +local void send_all_trees(s, lcodes, dcodes, blcodes) + deflate_state *s; + int lcodes, dcodes, blcodes; /* number of codes for each tree */ +{ + int rank; /* index in bl_order */ + + Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes"); + Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES, + "too many codes"); + Tracev((stderr, "\nbl counts: ")); + send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */ + send_bits(s, dcodes-1, 5); + send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */ + for (rank = 0; rank < blcodes; rank++) { + Tracev((stderr, "\nbl code %2d ", bl_order[rank])); + send_bits(s, s->bl_tree[bl_order[rank]].Len, 3); + } + Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent)); + + send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */ + Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent)); + + send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */ + Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent)); +} + +/* =========================================================================== + * Send a stored block + */ +void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last) + deflate_state *s; + charf *buf; /* input block */ + ulg stored_len; /* length of input block */ + int last; /* one if this is the last block for a file */ +{ + send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */ +#ifdef DEBUG + s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L; + s->compressed_len += (stored_len + 4) << 3; +#endif + copy_block(s, buf, (unsigned)stored_len, 1); /* with header */ +} + +/* =========================================================================== + * Flush the bits in the bit buffer to pending output (leaves at most 7 bits) + */ +void ZLIB_INTERNAL _tr_flush_bits(s) + deflate_state *s; +{ + bi_flush(s); +} + +/* =========================================================================== + * Send one empty static block to give enough lookahead for inflate. + * This takes 10 bits, of which 7 may remain in the bit buffer. + */ +void ZLIB_INTERNAL _tr_align(s) + deflate_state *s; +{ + send_bits(s, STATIC_TREES<<1, 3); + send_code(s, END_BLOCK, static_ltree); +#ifdef DEBUG + s->compressed_len += 10L; /* 3 for block type, 7 for EOB */ +#endif + bi_flush(s); +} + +/* =========================================================================== + * Determine the best encoding for the current block: dynamic trees, static + * trees or store, and output the encoded block to the zip file. + */ +void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last) + deflate_state *s; + charf *buf; /* input block, or NULL if too old */ + ulg stored_len; /* length of input block */ + int last; /* one if this is the last block for a file */ +{ + ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */ + int max_blindex = 0; /* index of last bit length code of non zero freq */ + + /* Build the Huffman trees unless a stored block is forced */ + if (s->level > 0) { + + /* Check if the file is binary or text */ + if (s->strm->data_type == Z_UNKNOWN) + s->strm->data_type = detect_data_type(s); + + /* Construct the literal and distance trees */ + build_tree(s, (tree_desc *)(&(s->l_desc))); + Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len, + s->static_len)); + + build_tree(s, (tree_desc *)(&(s->d_desc))); + Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len, + s->static_len)); + /* At this point, opt_len and static_len are the total bit lengths of + * the compressed block data, excluding the tree representations. + */ + + /* Build the bit length tree for the above two trees, and get the index + * in bl_order of the last bit length code to send. + */ + max_blindex = build_bl_tree(s); + + /* Determine the best encoding. Compute the block lengths in bytes. */ + opt_lenb = (s->opt_len+3+7)>>3; + static_lenb = (s->static_len+3+7)>>3; + + Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ", + opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len, + s->last_lit)); + + if (static_lenb <= opt_lenb) opt_lenb = static_lenb; + + } else { + Assert(buf != (char*)0, "lost buf"); + opt_lenb = static_lenb = stored_len + 5; /* force a stored block */ + } + +#ifdef FORCE_STORED + if (buf != (char*)0) { /* force stored block */ +#else + if (stored_len+4 <= opt_lenb && buf != (char*)0) { + /* 4: two words for the lengths */ +#endif + /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE. + * Otherwise we can't have processed more than WSIZE input bytes since + * the last block flush, because compression would have been + * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to + * transform a block into a stored block. + */ + _tr_stored_block(s, buf, stored_len, last); + +#ifdef FORCE_STATIC + } else if (static_lenb >= 0) { /* force static trees */ +#else + } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) { +#endif + send_bits(s, (STATIC_TREES<<1)+last, 3); + compress_block(s, (ct_data *)static_ltree, (ct_data *)static_dtree); +#ifdef DEBUG + s->compressed_len += 3 + s->static_len; +#endif + } else { + send_bits(s, (DYN_TREES<<1)+last, 3); + send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1, + max_blindex+1); + compress_block(s, (ct_data *)s->dyn_ltree, (ct_data *)s->dyn_dtree); +#ifdef DEBUG + s->compressed_len += 3 + s->opt_len; +#endif + } + Assert (s->compressed_len == s->bits_sent, "bad compressed size"); + /* The above check is made mod 2^32, for files larger than 512 MB + * and uLong implemented on 32 bits. + */ + init_block(s); + + if (last) { + bi_windup(s); +#ifdef DEBUG + s->compressed_len += 7; /* align on byte boundary */ +#endif + } + Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3, + s->compressed_len-7*last)); +} + +/* =========================================================================== + * Save the match info and tally the frequency counts. Return true if + * the current block must be flushed. + */ +int ZLIB_INTERNAL _tr_tally (s, dist, lc) + deflate_state *s; + unsigned dist; /* distance of matched string */ + unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */ +{ + s->d_buf[s->last_lit] = (ush)dist; + s->l_buf[s->last_lit++] = (uch)lc; + if (dist == 0) { + /* lc is the unmatched char */ + s->dyn_ltree[lc].Freq++; + } else { + s->matches++; + /* Here, lc is the match length - MIN_MATCH */ + dist--; /* dist = match distance - 1 */ + Assert((ush)dist < (ush)MAX_DIST(s) && + (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) && + (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match"); + + s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++; + s->dyn_dtree[d_code(dist)].Freq++; + } + +#ifdef TRUNCATE_BLOCK + /* Try to guess if it is profitable to stop the current block here */ + if ((s->last_lit & 0x1fff) == 0 && s->level > 2) { + /* Compute an upper bound for the compressed length */ + ulg out_length = (ulg)s->last_lit*8L; + ulg in_length = (ulg)((long)s->strstart - s->block_start); + int dcode; + for (dcode = 0; dcode < D_CODES; dcode++) { + out_length += (ulg)s->dyn_dtree[dcode].Freq * + (5L+extra_dbits[dcode]); + } + out_length >>= 3; + Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ", + s->last_lit, in_length, out_length, + 100L - out_length*100L/in_length)); + if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1; + } +#endif + return (s->last_lit == s->lit_bufsize-1); + /* We avoid equality with lit_bufsize because of wraparound at 64K + * on 16 bit machines and because stored blocks are restricted to + * 64K-1 bytes. + */ +} + +/* =========================================================================== + * Send the block data compressed using the given Huffman trees + */ +local void compress_block(s, ltree, dtree) + deflate_state *s; + ct_data *ltree; /* literal tree */ + ct_data *dtree; /* distance tree */ +{ + unsigned dist; /* distance of matched string */ + int lc; /* match length or unmatched char (if dist == 0) */ + unsigned lx = 0; /* running index in l_buf */ + unsigned code; /* the code to send */ + int extra; /* number of extra bits to send */ + + if (s->last_lit != 0) do { + dist = s->d_buf[lx]; + lc = s->l_buf[lx++]; + if (dist == 0) { + send_code(s, lc, ltree); /* send a literal byte */ + Tracecv(isgraph(lc), (stderr," '%c' ", lc)); + } else { + /* Here, lc is the match length - MIN_MATCH */ + code = _length_code[lc]; + send_code(s, code+LITERALS+1, ltree); /* send the length code */ + extra = extra_lbits[code]; + if (extra != 0) { + lc -= base_length[code]; + send_bits(s, lc, extra); /* send the extra length bits */ + } + dist--; /* dist is now the match distance - 1 */ + code = d_code(dist); + Assert (code < D_CODES, "bad d_code"); + + send_code(s, code, dtree); /* send the distance code */ + extra = extra_dbits[code]; + if (extra != 0) { + dist -= base_dist[code]; + send_bits(s, dist, extra); /* send the extra distance bits */ + } + } /* literal or match pair ? */ + + /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */ + Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx, + "pendingBuf overflow"); + + } while (lx < s->last_lit); + + send_code(s, END_BLOCK, ltree); +} + +/* =========================================================================== + * Check if the data type is TEXT or BINARY, using the following algorithm: + * - TEXT if the two conditions below are satisfied: + * a) There are no non-portable control characters belonging to the + * "black list" (0..6, 14..25, 28..31). + * b) There is at least one printable character belonging to the + * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255). + * - BINARY otherwise. + * - The following partially-portable control characters form a + * "gray list" that is ignored in this detection algorithm: + * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}). + * IN assertion: the fields Freq of dyn_ltree are set. + */ +local int detect_data_type(s) + deflate_state *s; +{ + /* black_mask is the bit mask of black-listed bytes + * set bits 0..6, 14..25, and 28..31 + * 0xf3ffc07f = binary 11110011111111111100000001111111 + */ + unsigned long black_mask = 0xf3ffc07fUL; + int n; + + /* Check for non-textual ("black-listed") bytes. */ + for (n = 0; n <= 31; n++, black_mask >>= 1) + if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0)) + return Z_BINARY; + + /* Check for textual ("white-listed") bytes. */ + if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0 + || s->dyn_ltree[13].Freq != 0) + return Z_TEXT; + for (n = 32; n < LITERALS; n++) + if (s->dyn_ltree[n].Freq != 0) + return Z_TEXT; + + /* There are no "black-listed" or "white-listed" bytes: + * this stream either is empty or has tolerated ("gray-listed") bytes only. + */ + return Z_BINARY; +} + +/* =========================================================================== + * Reverse the first len bits of a code, using straightforward code (a faster + * method would use a table) + * IN assertion: 1 <= len <= 15 + */ +local unsigned bi_reverse(code, len) + unsigned code; /* the value to invert */ + int len; /* its bit length */ +{ + register unsigned res = 0; + do { + res |= code & 1; + code >>= 1, res <<= 1; + } while (--len > 0); + return res >> 1; +} + +/* =========================================================================== + * Flush the bit buffer, keeping at most 7 bits in it. + */ +local void bi_flush(s) + deflate_state *s; +{ + if (s->bi_valid == 16) { + put_short(s, s->bi_buf); + s->bi_buf = 0; + s->bi_valid = 0; + } else if (s->bi_valid >= 8) { + put_byte(s, (Byte)s->bi_buf); + s->bi_buf >>= 8; + s->bi_valid -= 8; + } +} + +/* =========================================================================== + * Flush the bit buffer and align the output on a byte boundary + */ +local void bi_windup(s) + deflate_state *s; +{ + if (s->bi_valid > 8) { + put_short(s, s->bi_buf); + } else if (s->bi_valid > 0) { + put_byte(s, (Byte)s->bi_buf); + } + s->bi_buf = 0; + s->bi_valid = 0; +#ifdef DEBUG + s->bits_sent = (s->bits_sent+7) & ~7; +#endif +} + +/* =========================================================================== + * Copy a stored block, storing first the length and its + * one's complement if requested. + */ +local void copy_block(s, buf, len, header) + deflate_state *s; + charf *buf; /* the input data */ + unsigned len; /* its length */ + int header; /* true if block header must be written */ +{ + bi_windup(s); /* align on byte boundary */ + + if (header) { + put_short(s, (ush)len); + put_short(s, (ush)~len); +#ifdef DEBUG + s->bits_sent += 2*16; +#endif + } +#ifdef DEBUG + s->bits_sent += (ulg)len<<3; +#endif + while (len--) { + put_byte(s, *buf++); + } +} diff --git a/sdk-modifications/libsrc/zlib/trees.h b/sdk-modifications/libsrc/zlib/trees.h new file mode 100644 index 0000000..d35639d --- /dev/null +++ b/sdk-modifications/libsrc/zlib/trees.h @@ -0,0 +1,128 @@ +/* header created automatically with -DGEN_TREES_H */ + +local const ct_data static_ltree[L_CODES+2] = { +{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}}, +{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}}, +{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}}, +{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}}, +{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}}, +{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}}, +{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}}, +{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}}, +{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}}, +{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}}, +{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}}, +{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}}, +{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}}, +{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}}, +{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}}, +{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}}, +{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}}, +{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}}, +{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}}, +{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}}, +{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}}, +{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}}, +{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}}, +{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}}, +{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}}, +{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}}, +{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}}, +{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}}, +{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}}, +{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}}, +{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}}, +{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}}, +{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}}, +{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}}, +{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}}, +{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}}, +{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}}, +{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}}, +{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}}, +{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}}, +{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}}, +{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}}, +{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}}, +{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}}, +{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}}, +{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}}, +{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}}, +{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}}, +{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}}, +{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}}, +{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}}, +{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}}, +{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}}, +{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}}, +{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}}, +{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}}, +{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}}, +{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}} +}; + +local const ct_data static_dtree[D_CODES] = { +{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}}, +{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}}, +{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}}, +{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}}, +{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}}, +{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}} +}; + +const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = { + 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, + 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, +10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, +11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, +12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, +13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, +13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, +14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, +14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, +14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15, +15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, +15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, +15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17, +18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22, +23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, +24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, +26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, +26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, +27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, +28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, +28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, +28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, +29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, +29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, +29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29 +}; + +const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= { + 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12, +13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, +17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, +19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, +21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, +22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23, +23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, +24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, +25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, +25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26, +26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, +26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, +27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28 +}; + +local const int base_length[LENGTH_CODES] = { +0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, +64, 80, 96, 112, 128, 160, 192, 224, 0 +}; + +local const int base_dist[D_CODES] = { + 0, 1, 2, 3, 4, 6, 8, 12, 16, 24, + 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, + 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576 +}; + diff --git a/sdk-modifications/libsrc/zlib/uncompr.c b/sdk-modifications/libsrc/zlib/uncompr.c new file mode 100644 index 0000000..ad98be3 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/uncompr.c @@ -0,0 +1,59 @@ +/* uncompr.c -- decompress a memory buffer + * Copyright (C) 1995-2003, 2010 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#define ZLIB_INTERNAL +#include "zlib.h" + +/* =========================================================================== + Decompresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total + size of the destination buffer, which must be large enough to hold the + entire uncompressed data. (The size of the uncompressed data must have + been saved previously by the compressor and transmitted to the decompressor + by some mechanism outside the scope of this compression library.) + Upon exit, destLen is the actual size of the compressed buffer. + + uncompress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer, or Z_DATA_ERROR if the input data was corrupted. +*/ +int ZEXPORT uncompress (dest, destLen, source, sourceLen) + Bytef *dest; + uLongf *destLen; + const Bytef *source; + uLong sourceLen; +{ + z_stream stream; + int err; + + stream.next_in = (Bytef*)source; + stream.avail_in = (uInt)sourceLen; + /* Check for source > 64K on 16-bit machine: */ + if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR; + + stream.next_out = dest; + stream.avail_out = (uInt)*destLen; + if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR; + + stream.zalloc = (alloc_func)0; + stream.zfree = (free_func)0; + + err = inflateInit(&stream); + if (err != Z_OK) return err; + + err = inflate(&stream, Z_FINISH); + if (err != Z_STREAM_END) { + inflateEnd(&stream); + if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0)) + return Z_DATA_ERROR; + return err; + } + *destLen = stream.total_out; + + err = inflateEnd(&stream); + return err; +} diff --git a/sdk-modifications/libsrc/zlib/zconf.h b/sdk-modifications/libsrc/zlib/zconf.h new file mode 100644 index 0000000..96810e7 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/zconf.h @@ -0,0 +1,468 @@ +/* zconf.h -- configuration of the zlib compression library + * Copyright (C) 1995-2011 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#ifndef ZCONF_H +#define ZCONF_H + +/* + * If you *really* need a unique prefix for all types and library functions, + * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it. + * Even better than compiling with -DZ_PREFIX would be to use configure to set + * this permanently in zconf.h using "./configure --zprefix". + */ +#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */ +# define Z_PREFIX_SET + +/* all linked symbols */ +# define _dist_code z__dist_code +# define _length_code z__length_code +# define _tr_align z__tr_align +# define _tr_flush_block z__tr_flush_block +# define _tr_init z__tr_init +# define _tr_stored_block z__tr_stored_block +# define _tr_tally z__tr_tally +# define adler32 z_adler32 +# define adler32_combine z_adler32_combine +# define adler32_combine64 z_adler32_combine64 +# ifndef Z_SOLO +# define compress z_compress +# define compress2 z_compress2 +# define compressBound z_compressBound +# endif +# define crc32 z_crc32 +# define crc32_combine z_crc32_combine +# define crc32_combine64 z_crc32_combine64 +# define deflate z_deflate +# define deflateBound z_deflateBound +# define deflateCopy z_deflateCopy +# define deflateEnd z_deflateEnd +# define deflateInit2_ z_deflateInit2_ +# define deflateInit_ z_deflateInit_ +# define deflateParams z_deflateParams +# define deflatePending z_deflatePending +# define deflatePrime z_deflatePrime +# define deflateReset z_deflateReset +# define deflateResetKeep z_deflateResetKeep +# define deflateSetDictionary z_deflateSetDictionary +# define deflateSetHeader z_deflateSetHeader +# define deflateTune z_deflateTune +# define deflate_copyright z_deflate_copyright +# define get_crc_table z_get_crc_table +# ifndef Z_SOLO +# define gz_error z_gz_error +# define gz_intmax z_gz_intmax +# define gz_strwinerror z_gz_strwinerror +# define gzbuffer z_gzbuffer +# define gzclearerr z_gzclearerr +# define gzclose z_gzclose +# define gzclose_r z_gzclose_r +# define gzclose_w z_gzclose_w +# define gzdirect z_gzdirect +# define gzdopen z_gzdopen +# define gzeof z_gzeof +# define gzerror z_gzerror +# define gzflags z_gzflags +# define gzflush z_gzflush +# define gzgetc z_gzgetc +# define gzgetc_ z_gzgetc_ +# define gzgets z_gzgets +# define gzoffset z_gzoffset +# define gzoffset64 z_gzoffset64 +# define gzopen z_gzopen +# define gzopen64 z_gzopen64 +# define gzprintf z_gzprintf +# define gzputc z_gzputc +# define gzputs z_gzputs +# define gzread z_gzread +# define gzrewind z_gzrewind +# define gzseek z_gzseek +# define gzseek64 z_gzseek64 +# define gzsetparams z_gzsetparams +# define gztell z_gztell +# define gztell64 z_gztell64 +# define gzungetc z_gzungetc +# define gzwrite z_gzwrite +# endif +# define inflate z_inflate +# define inflateBack z_inflateBack +# define inflateBackEnd z_inflateBackEnd +# define inflateBackInit_ z_inflateBackInit_ +# define inflateCopy z_inflateCopy +# define inflateEnd z_inflateEnd +# define inflateGetHeader z_inflateGetHeader +# define inflateInit2_ z_inflateInit2_ +# define inflateInit_ z_inflateInit_ +# define inflateMark z_inflateMark +# define inflatePrime z_inflatePrime +# define inflateReset z_inflateReset +# define inflateReset2 z_inflateReset2 +# define inflateSetDictionary z_inflateSetDictionary +# define inflateSync z_inflateSync +# define inflateSyncPoint z_inflateSyncPoint +# define inflateUndermine z_inflateUndermine +# define inflateResetKeep z_inflateResetKeep +# define inflate_copyright z_inflate_copyright +# define inflate_fast z_inflate_fast +# define inflate_table z_inflate_table +# ifndef Z_SOLO +# define uncompress z_uncompress +# endif +# define zError z_zError +# ifndef Z_SOLO +# define zcalloc z_zcalloc +# define zcfree z_zcfree +# endif +# define zlibCompileFlags z_zlibCompileFlags +# define zlibVersion z_zlibVersion + +/* all zlib typedefs in zlib.h and zconf.h */ +# define Byte z_Byte +# define Bytef z_Bytef +# define alloc_func z_alloc_func +# define charf z_charf +# define free_func z_free_func +# ifndef Z_SOLO +# define gzFile z_gzFile +# define gz_header z_gz_header +# define gz_headerp z_gz_headerp +# endif +# define in_func z_in_func +# define intf z_intf +# define out_func z_out_func +# define uInt z_uInt +# define uIntf z_uIntf +# define uLong z_uLong +# define uLongf z_uLongf +# define voidp z_voidp +# define voidpc z_voidpc +# define voidpf z_voidpf + +/* all zlib structs in zlib.h and zconf.h */ +# ifndef Z_SOLO +# define gz_header_s z_gz_header_s +# endif +# define internal_state z_internal_state + +#endif + +#if defined(__MSDOS__) && !defined(MSDOS) +# define MSDOS +#endif +#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2) +# define OS2 +#endif +#if defined(_WINDOWS) && !defined(WINDOWS) +# define WINDOWS +#endif +#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__) +# ifndef WIN32 +# define WIN32 +# endif +#endif +#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32) +# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__) +# ifndef SYS16BIT +# define SYS16BIT +# endif +# endif +#endif + +/* + * Compile with -DMAXSEG_64K if the alloc function cannot allocate more + * than 64k bytes at a time (needed on systems with 16-bit int). + */ +#ifdef SYS16BIT +# define MAXSEG_64K +#endif +#ifdef MSDOS +# define UNALIGNED_OK +#endif + +#ifdef __STDC_VERSION__ +# ifndef STDC +# define STDC +# endif +# if __STDC_VERSION__ >= 199901L +# ifndef STDC99 +# define STDC99 +# endif +# endif +#endif +#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus)) +# define STDC +#endif +#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__)) +# define STDC +#endif +#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32)) +# define STDC +#endif +#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__)) +# define STDC +#endif + +#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */ +# define STDC +#endif + +#ifndef STDC +# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */ +# define const /* note: need a more gentle solution here */ +# endif +#endif + +#if defined(ZLIB_CONST) && !defined(z_const) +# define z_const const +#else +# define z_const +#endif + +/* Some Mac compilers merge all .h files incorrectly: */ +#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__) +# define NO_DUMMY_DECL +#endif + +/* Maximum value for memLevel in deflateInit2 */ +#ifndef MAX_MEM_LEVEL +# ifdef MAXSEG_64K +# define MAX_MEM_LEVEL 8 +# else +# define MAX_MEM_LEVEL 9 +# endif +#endif + +/* Maximum value for windowBits in deflateInit2 and inflateInit2. + * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files + * created by gzip. (Files created by minigzip can still be extracted by + * gzip.) + */ +#ifndef MAX_WBITS +# define MAX_WBITS 15 /* 32K LZ77 window */ +#endif + +/* The memory requirements for deflate are (in bytes): + (1 << (windowBits+2)) + (1 << (memLevel+9)) + that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values) + plus a few kilobytes for small objects. For example, if you want to reduce + the default memory requirements from 256K to 128K, compile with + make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7" + Of course this will generally degrade compression (there's no free lunch). + + The memory requirements for inflate are (in bytes) 1 << windowBits + that is, 32K for windowBits=15 (default value) plus a few kilobytes + for small objects. +*/ + + /* Type declarations */ + +#ifndef OF /* function prototypes */ +# ifdef STDC +# define OF(args) args +# else +# define OF(args) () +# endif +#endif + +#ifndef Z_ARG /* function prototypes for stdarg */ +# if defined(STDC) || defined(Z_HAVE_STDARG_H) +# define Z_ARG(args) args +# else +# define Z_ARG(args) () +# endif +#endif + +/* The following definitions for FAR are needed only for MSDOS mixed + * model programming (small or medium model with some far allocations). + * This was tested only with MSC; for other MSDOS compilers you may have + * to define NO_MEMCPY in zutil.h. If you don't need the mixed model, + * just define FAR to be empty. + */ +#ifdef SYS16BIT +# if defined(M_I86SM) || defined(M_I86MM) + /* MSC small or medium model */ +# define SMALL_MEDIUM +# ifdef _MSC_VER +# define FAR _far +# else +# define FAR far +# endif +# endif +# if (defined(__SMALL__) || defined(__MEDIUM__)) + /* Turbo C small or medium model */ +# define SMALL_MEDIUM +# ifdef __BORLANDC__ +# define FAR _far +# else +# define FAR far +# endif +# endif +#endif + +#if defined(WINDOWS) || defined(WIN32) + /* If building or using zlib as a DLL, define ZLIB_DLL. + * This is not mandatory, but it offers a little performance increase. + */ +# ifdef ZLIB_DLL +# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500)) +# ifdef ZLIB_INTERNAL +# define ZEXTERN extern __declspec(dllexport) +# else +# define ZEXTERN extern __declspec(dllimport) +# endif +# endif +# endif /* ZLIB_DLL */ + /* If building or using zlib with the WINAPI/WINAPIV calling convention, + * define ZLIB_WINAPI. + * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI. + */ +# ifdef ZLIB_WINAPI +# ifdef FAR +# undef FAR +# endif +# include <windows.h> + /* No need for _export, use ZLIB.DEF instead. */ + /* For complete Windows compatibility, use WINAPI, not __stdcall. */ +# define ZEXPORT WINAPI +# ifdef WIN32 +# define ZEXPORTVA WINAPIV +# else +# define ZEXPORTVA FAR CDECL +# endif +# endif +#endif + +#if defined (__BEOS__) +# ifdef ZLIB_DLL +# ifdef ZLIB_INTERNAL +# define ZEXPORT __declspec(dllexport) +# define ZEXPORTVA __declspec(dllexport) +# else +# define ZEXPORT __declspec(dllimport) +# define ZEXPORTVA __declspec(dllimport) +# endif +# endif +#endif + +#ifndef ZEXTERN +# define ZEXTERN extern +#endif +#ifndef ZEXPORT +# define ZEXPORT +#endif +#ifndef ZEXPORTVA +# define ZEXPORTVA +#endif + +#ifndef FAR +# define FAR +#endif + +#if !defined(__MACTYPES__) +typedef unsigned char Byte; /* 8 bits */ +#endif +typedef unsigned int uInt; /* 16 bits or more */ +typedef unsigned long uLong; /* 32 bits or more */ + +#ifdef SMALL_MEDIUM + /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */ +# define Bytef Byte FAR +#else + typedef Byte FAR Bytef; +#endif +typedef char FAR charf; +typedef int FAR intf; +typedef uInt FAR uIntf; +typedef uLong FAR uLongf; + +#ifdef STDC + typedef void const *voidpc; + typedef void FAR *voidpf; + typedef void *voidp; +#else + typedef Byte const *voidpc; + typedef Byte FAR *voidpf; + typedef Byte *voidp; +#endif + +#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */ +# define Z_HAVE_UNISTD_H +#endif + +#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */ +# define Z_HAVE_STDARG_H +#endif + +#ifdef STDC +# ifndef Z_SOLO +// # include <sys/types.h> /* for off_t */ +// Does not work with the DS2 SDK. There is a type conflict between sys/types.h +// and fs_api.h. +# endif +#endif + +/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and + * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even + * though the former does not conform to the LFS document), but considering + * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as + * equivalently requesting no 64-bit operations + */ +#if -_LARGEFILE64_SOURCE - -1 == 1 +# undef _LARGEFILE64_SOURCE +#endif + +#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0 +# define Z_LARGE +#endif + +#if (defined(Z_HAVE_UNISTD_H) || defined(Z_LARGE)) && !defined(Z_SOLO) +# include <unistd.h> /* for SEEK_* and off_t */ +# ifdef VMS +# include <unixio.h> /* for off_t */ +# endif +# ifndef z_off_t +# define z_off_t off_t +# endif +#endif + +#if !defined(SEEK_SET) && !defined(Z_SOLO) +# define SEEK_SET 0 /* Seek from beginning of file. */ +# define SEEK_CUR 1 /* Seek from current position. */ +# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */ +#endif + +#ifndef z_off_t +# define z_off_t long +#endif + +#if !defined(_WIN32) && (defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0) +# define z_off64_t off64_t +#else +# if defined(_WIN32) +# define z_off64_t __int64 +# else +# define z_off64_t z_off_t +#endif +#endif + +/* MVS linker does not support external names larger than 8 bytes */ +#if defined(__MVS__) + #pragma map(deflateInit_,"DEIN") + #pragma map(deflateInit2_,"DEIN2") + #pragma map(deflateEnd,"DEEND") + #pragma map(deflateBound,"DEBND") + #pragma map(inflateInit_,"ININ") + #pragma map(inflateInit2_,"ININ2") + #pragma map(inflateEnd,"INEND") + #pragma map(inflateSync,"INSY") + #pragma map(inflateSetDictionary,"INSEDI") + #pragma map(compressBound,"CMBND") + #pragma map(inflate_table,"INTABL") + #pragma map(inflate_fast,"INFA") + #pragma map(inflate_copyright,"INCOPY") +#endif + +#endif /* ZCONF_H */ diff --git a/sdk-modifications/libsrc/zlib/zlib.h b/sdk-modifications/libsrc/zlib/zlib.h new file mode 100644 index 0000000..79142d1 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/zlib.h @@ -0,0 +1,1732 @@ +/* zlib.h -- interface of the 'zlib' general purpose compression library + version 1.2.6, January 29th, 2012 + + Copyright (C) 1995-2012 Jean-loup Gailly and Mark Adler + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. + + Jean-loup Gailly Mark Adler + jloup@gzip.org madler@alumni.caltech.edu + + + The data format used by the zlib library is described by RFCs (Request for + Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950 + (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format). +*/ + +#ifndef ZLIB_H +#define ZLIB_H + +#include "zconf.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define ZLIB_VERSION "1.2.6" +#define ZLIB_VERNUM 0x1260 +#define ZLIB_VER_MAJOR 1 +#define ZLIB_VER_MINOR 2 +#define ZLIB_VER_REVISION 6 +#define ZLIB_VER_SUBREVISION 0 + +/* + The 'zlib' compression library provides in-memory compression and + decompression functions, including integrity checks of the uncompressed data. + This version of the library supports only one compression method (deflation) + but other algorithms will be added later and will have the same stream + interface. + + Compression can be done in a single step if the buffers are large enough, + or can be done by repeated calls of the compression function. In the latter + case, the application must provide more input and/or consume the output + (providing more output space) before each call. + + The compressed data format used by default by the in-memory functions is + the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped + around a deflate stream, which is itself documented in RFC 1951. + + The library also supports reading and writing files in gzip (.gz) format + with an interface similar to that of stdio using the functions that start + with "gz". The gzip format is different from the zlib format. gzip is a + gzip wrapper, documented in RFC 1952, wrapped around a deflate stream. + + This library can optionally read and write gzip streams in memory as well. + + The zlib format was designed to be compact and fast for use in memory + and on communications channels. The gzip format was designed for single- + file compression on file systems, has a larger header than zlib to maintain + directory information, and uses a different, slower check method than zlib. + + The library does not install any signal handler. The decoder checks + the consistency of the compressed data, so the library should never crash + even in case of corrupted input. +*/ + +typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size)); +typedef void (*free_func) OF((voidpf opaque, voidpf address)); + +struct internal_state; + +typedef struct z_stream_s { + z_const Bytef *next_in; /* next input byte */ + uInt avail_in; /* number of bytes available at next_in */ + uLong total_in; /* total number of input bytes read so far */ + + Bytef *next_out; /* next output byte should be put there */ + uInt avail_out; /* remaining free space at next_out */ + uLong total_out; /* total number of bytes output so far */ + + z_const char *msg; /* last error message, NULL if no error */ + struct internal_state FAR *state; /* not visible by applications */ + + alloc_func zalloc; /* used to allocate the internal state */ + free_func zfree; /* used to free the internal state */ + voidpf opaque; /* private data object passed to zalloc and zfree */ + + int data_type; /* best guess about the data type: binary or text */ + uLong adler; /* adler32 value of the uncompressed data */ + uLong reserved; /* reserved for future use */ +} z_stream; + +typedef z_stream FAR *z_streamp; + +/* + gzip header information passed to and from zlib routines. See RFC 1952 + for more details on the meanings of these fields. +*/ +typedef struct gz_header_s { + int text; /* true if compressed data believed to be text */ + uLong time; /* modification time */ + int xflags; /* extra flags (not used when writing a gzip file) */ + int os; /* operating system */ + Bytef *extra; /* pointer to extra field or Z_NULL if none */ + uInt extra_len; /* extra field length (valid if extra != Z_NULL) */ + uInt extra_max; /* space at extra (only when reading header) */ + Bytef *name; /* pointer to zero-terminated file name or Z_NULL */ + uInt name_max; /* space at name (only when reading header) */ + Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */ + uInt comm_max; /* space at comment (only when reading header) */ + int hcrc; /* true if there was or will be a header crc */ + int done; /* true when done reading gzip header (not used + when writing a gzip file) */ +} gz_header; + +typedef gz_header FAR *gz_headerp; + +/* + The application must update next_in and avail_in when avail_in has dropped + to zero. It must update next_out and avail_out when avail_out has dropped + to zero. The application must initialize zalloc, zfree and opaque before + calling the init function. All other fields are set by the compression + library and must not be updated by the application. + + The opaque value provided by the application will be passed as the first + parameter for calls of zalloc and zfree. This can be useful for custom + memory management. The compression library attaches no meaning to the + opaque value. + + zalloc must return Z_NULL if there is not enough memory for the object. + If zlib is used in a multi-threaded application, zalloc and zfree must be + thread safe. + + On 16-bit systems, the functions zalloc and zfree must be able to allocate + exactly 65536 bytes, but will not be required to allocate more than this if + the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers + returned by zalloc for objects of exactly 65536 bytes *must* have their + offset normalized to zero. The default allocation function provided by this + library ensures this (see zutil.c). To reduce memory requirements and avoid + any allocation of 64K objects, at the expense of compression ratio, compile + the library with -DMAX_WBITS=14 (see zconf.h). + + The fields total_in and total_out can be used for statistics or progress + reports. After compression, total_in holds the total size of the + uncompressed data and may be saved for use in the decompressor (particularly + if the decompressor wants to decompress everything in a single step). +*/ + + /* constants */ + +#define Z_NO_FLUSH 0 +#define Z_PARTIAL_FLUSH 1 +#define Z_SYNC_FLUSH 2 +#define Z_FULL_FLUSH 3 +#define Z_FINISH 4 +#define Z_BLOCK 5 +#define Z_TREES 6 +/* Allowed flush values; see deflate() and inflate() below for details */ + +#define Z_OK 0 +#define Z_STREAM_END 1 +#define Z_NEED_DICT 2 +#define Z_ERRNO (-1) +#define Z_STREAM_ERROR (-2) +#define Z_DATA_ERROR (-3) +#define Z_MEM_ERROR (-4) +#define Z_BUF_ERROR (-5) +#define Z_VERSION_ERROR (-6) +/* Return codes for the compression/decompression functions. Negative values + * are errors, positive values are used for special but normal events. + */ + +#define Z_NO_COMPRESSION 0 +#define Z_BEST_SPEED 1 +#define Z_BEST_COMPRESSION 9 +#define Z_DEFAULT_COMPRESSION (-1) +/* compression levels */ + +#define Z_FILTERED 1 +#define Z_HUFFMAN_ONLY 2 +#define Z_RLE 3 +#define Z_FIXED 4 +#define Z_DEFAULT_STRATEGY 0 +/* compression strategy; see deflateInit2() below for details */ + +#define Z_BINARY 0 +#define Z_TEXT 1 +#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */ +#define Z_UNKNOWN 2 +/* Possible values of the data_type field (though see inflate()) */ + +#define Z_DEFLATED 8 +/* The deflate compression method (the only one supported in this version) */ + +#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */ + +#define zlib_version zlibVersion() +/* for compatibility with versions < 1.0.2 */ + + + /* basic functions */ + +ZEXTERN const char * ZEXPORT zlibVersion OF((void)); +/* The application can compare zlibVersion and ZLIB_VERSION for consistency. + If the first character differs, the library code actually used is not + compatible with the zlib.h header file used by the application. This check + is automatically made by deflateInit and inflateInit. + */ + +/* +ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level)); + + Initializes the internal stream state for compression. The fields + zalloc, zfree and opaque must be initialized before by the caller. If + zalloc and zfree are set to Z_NULL, deflateInit updates them to use default + allocation functions. + + The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9: + 1 gives best speed, 9 gives best compression, 0 gives no compression at all + (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION + requests a default compromise between speed and compression (currently + equivalent to level 6). + + deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if level is not a valid compression level, or + Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible + with the version assumed by the caller (ZLIB_VERSION). msg is set to null + if there is no error message. deflateInit does not perform any compression: + this will be done by deflate(). +*/ + + +ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush)); +/* + deflate compresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may introduce + some output latency (reading input without producing any output) except when + forced to flush. + + The detailed semantics are as follows. deflate performs one or both of the + following actions: + + - Compress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in and avail_in are updated and + processing will resume at this point for the next call of deflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. This action is forced if the parameter flush is non zero. + Forcing flush frequently degrades the compression ratio, so this parameter + should be set only when necessary (in interactive applications). Some + output may be provided even if flush is not set. + + Before the call of deflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming more + output, and updating avail_in or avail_out accordingly; avail_out should + never be zero before the call. The application can consume the compressed + output when it wants, for example when the output buffer is full (avail_out + == 0), or after each call of deflate(). If deflate returns Z_OK and with + zero avail_out, it must be called again after making room in the output + buffer because there might be more output pending. + + Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to + decide how much data to accumulate before producing output, in order to + maximize compression. + + If the parameter flush is set to Z_SYNC_FLUSH, all pending output is + flushed to the output buffer and the output is aligned on a byte boundary, so + that the decompressor can get all input data available so far. (In + particular avail_in is zero after the call if enough output space has been + provided before the call.) Flushing may degrade compression for some + compression algorithms and so it should be used only when necessary. This + completes the current deflate block and follows it with an empty stored block + that is three bits plus filler bits to the next byte, followed by four bytes + (00 00 ff ff). + + If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the + output buffer, but the output is not aligned to a byte boundary. All of the + input data so far will be available to the decompressor, as for Z_SYNC_FLUSH. + This completes the current deflate block and follows it with an empty fixed + codes block that is 10 bits long. This assures that enough bytes are output + in order for the decompressor to finish the block before the empty fixed code + block. + + If flush is set to Z_BLOCK, a deflate block is completed and emitted, as + for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to + seven bits of the current block are held to be written as the next byte after + the next deflate block is completed. In this case, the decompressor may not + be provided enough bits at this point in order to complete decompression of + the data provided so far to the compressor. It may need to wait for the next + block to be emitted. This is for advanced applications that need to control + the emission of deflate blocks. + + If flush is set to Z_FULL_FLUSH, all output is flushed as with + Z_SYNC_FLUSH, and the compression state is reset so that decompression can + restart from this point if previous compressed data has been damaged or if + random access is desired. Using Z_FULL_FLUSH too often can seriously degrade + compression. + + If deflate returns with avail_out == 0, this function must be called again + with the same value of the flush parameter and more output space (updated + avail_out), until the flush is complete (deflate returns with non-zero + avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that + avail_out is greater than six to avoid repeated flush markers due to + avail_out == 0 on return. + + If the parameter flush is set to Z_FINISH, pending input is processed, + pending output is flushed and deflate returns with Z_STREAM_END if there was + enough output space; if deflate returns with Z_OK, this function must be + called again with Z_FINISH and more output space (updated avail_out) but no + more input data, until it returns with Z_STREAM_END or an error. After + deflate has returned Z_STREAM_END, the only possible operations on the stream + are deflateReset or deflateEnd. + + Z_FINISH can be used immediately after deflateInit if all the compression + is to be done in a single step. In this case, avail_out must be at least the + value returned by deflateBound (see below). Then deflate is guaranteed to + return Z_STREAM_END. If not enough output space is provided, deflate will + not return Z_STREAM_END, and it must be called again as described above. + + deflate() sets strm->adler to the adler32 checksum of all input read + so far (that is, total_in bytes). + + deflate() may update strm->data_type if it can make a good guess about + the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered + binary. This field is only for information purposes and does not affect the + compression algorithm in any manner. + + deflate() returns Z_OK if some progress has been made (more input + processed or more output produced), Z_STREAM_END if all input has been + consumed and all output has been produced (only when flush is set to + Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example + if next_in or next_out was Z_NULL), Z_BUF_ERROR if no progress is possible + (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not + fatal, and deflate() can be called again with more input and more output + space to continue compressing. +*/ + + +ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm)); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any pending + output. + + deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the + stream state was inconsistent, Z_DATA_ERROR if the stream was freed + prematurely (some input or output was discarded). In the error case, msg + may be set but then points to a static string (which must not be + deallocated). +*/ + + +/* +ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm)); + + Initializes the internal stream state for decompression. The fields + next_in, avail_in, zalloc, zfree and opaque must be initialized before by + the caller. If next_in is not Z_NULL and avail_in is large enough (the + exact value depends on the compression method), inflateInit determines the + compression method from the zlib header and allocates all data structures + accordingly; otherwise the allocation will be deferred to the first call of + inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to + use default allocation functions. + + inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_VERSION_ERROR if the zlib library version is incompatible with the + version assumed by the caller, or Z_STREAM_ERROR if the parameters are + invalid, such as a null pointer to the structure. msg is set to null if + there is no error message. inflateInit does not perform any decompression + apart from possibly reading the zlib header if present: actual decompression + will be done by inflate(). (So next_in and avail_in may be modified, but + next_out and avail_out are unused and unchanged.) The current implementation + of inflateInit() does not process any header information -- that is deferred + until inflate() is called. +*/ + + +ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush)); +/* + inflate decompresses as much data as possible, and stops when the input + buffer becomes empty or the output buffer becomes full. It may introduce + some output latency (reading input without producing any output) except when + forced to flush. + + The detailed semantics are as follows. inflate performs one or both of the + following actions: + + - Decompress more input starting at next_in and update next_in and avail_in + accordingly. If not all input can be processed (because there is not + enough room in the output buffer), next_in is updated and processing will + resume at this point for the next call of inflate(). + + - Provide more output starting at next_out and update next_out and avail_out + accordingly. inflate() provides as much output as possible, until there is + no more input data or no more space in the output buffer (see below about + the flush parameter). + + Before the call of inflate(), the application should ensure that at least + one of the actions is possible, by providing more input and/or consuming more + output, and updating the next_* and avail_* values accordingly. The + application can consume the uncompressed output when it wants, for example + when the output buffer is full (avail_out == 0), or after each call of + inflate(). If inflate returns Z_OK and with zero avail_out, it must be + called again after making room in the output buffer because there might be + more output pending. + + The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH, + Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much + output as possible to the output buffer. Z_BLOCK requests that inflate() + stop if and when it gets to the next deflate block boundary. When decoding + the zlib or gzip format, this will cause inflate() to return immediately + after the header and before the first block. When doing a raw inflate, + inflate() will go ahead and process the first block, and will return when it + gets to the end of that block, or when it runs out of data. + + The Z_BLOCK option assists in appending to or combining deflate streams. + Also to assist in this, on return inflate() will set strm->data_type to the + number of unused bits in the last byte taken from strm->next_in, plus 64 if + inflate() is currently decoding the last block in the deflate stream, plus + 128 if inflate() returned immediately after decoding an end-of-block code or + decoding the complete header up to just before the first byte of the deflate + stream. The end-of-block will not be indicated until all of the uncompressed + data from that block has been written to strm->next_out. The number of + unused bits may in general be greater than seven, except when bit 7 of + data_type is set, in which case the number of unused bits will be less than + eight. data_type is set as noted here every time inflate() returns for all + flush options, and so can be used to determine the amount of currently + consumed input in bits. + + The Z_TREES option behaves as Z_BLOCK does, but it also returns when the + end of each deflate block header is reached, before any actual data in that + block is decoded. This allows the caller to determine the length of the + deflate block header for later use in random access within a deflate block. + 256 is added to the value of strm->data_type when inflate() returns + immediately after reaching the end of the deflate block header. + + inflate() should normally be called until it returns Z_STREAM_END or an + error. However if all decompression is to be performed in a single step (a + single call of inflate), the parameter flush should be set to Z_FINISH. In + this case all pending input is processed and all pending output is flushed; + avail_out must be large enough to hold all the uncompressed data. (The size + of the uncompressed data may have been saved by the compressor for this + purpose.) The next operation on this stream must be inflateEnd to deallocate + the decompression state. The use of Z_FINISH is not required to perform an + inflation in one step. However it may be used to inform inflate that a + faster approach can be used for the single inflate() call. Z_FINISH also + informs inflate to not maintain a sliding window if the stream completes, + which reduces inflate's memory footprint. + + In this implementation, inflate() always flushes as much output as + possible to the output buffer, and always uses the faster approach on the + first call. So the effects of the flush parameter in this implementation are + on the return value of inflate() as noted below, when inflate() returns early + when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of + memory for a sliding window when Z_FINISH is used. + + If a preset dictionary is needed after this call (see inflateSetDictionary + below), inflate sets strm->adler to the Adler-32 checksum of the dictionary + chosen by the compressor and returns Z_NEED_DICT; otherwise it sets + strm->adler to the Adler-32 checksum of all output produced so far (that is, + total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described + below. At the end of the stream, inflate() checks that its computed adler32 + checksum is equal to that saved by the compressor and returns Z_STREAM_END + only if the checksum is correct. + + inflate() can decompress and check either zlib-wrapped or gzip-wrapped + deflate data. The header type is detected automatically, if requested when + initializing with inflateInit2(). Any information contained in the gzip + header is not retained, so applications that need that information should + instead use raw inflate, see inflateInit2() below, or inflateBack() and + perform their own processing of the gzip header and trailer. When processing + gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output + producted so far. The CRC-32 is checked against the gzip trailer. + + inflate() returns Z_OK if some progress has been made (more input processed + or more output produced), Z_STREAM_END if the end of the compressed data has + been reached and all uncompressed output has been produced, Z_NEED_DICT if a + preset dictionary is needed at this point, Z_DATA_ERROR if the input data was + corrupted (input stream not conforming to the zlib format or incorrect check + value), Z_STREAM_ERROR if the stream structure was inconsistent (for example + next_in or next_out was Z_NULL), Z_MEM_ERROR if there was not enough memory, + Z_BUF_ERROR if no progress is possible or if there was not enough room in the + output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and + inflate() can be called again with more input and more output space to + continue decompressing. If Z_DATA_ERROR is returned, the application may + then call inflateSync() to look for a good compression block if a partial + recovery of the data is desired. +*/ + + +ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm)); +/* + All dynamically allocated data structures for this stream are freed. + This function discards any unprocessed input and does not flush any pending + output. + + inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state + was inconsistent. In the error case, msg may be set but then points to a + static string (which must not be deallocated). +*/ + + + /* Advanced functions */ + +/* + The following functions are needed only in some special applications. +*/ + +/* +ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm, + int level, + int method, + int windowBits, + int memLevel, + int strategy)); + + This is another version of deflateInit with more compression options. The + fields next_in, zalloc, zfree and opaque must be initialized before by the + caller. + + The method parameter is the compression method. It must be Z_DEFLATED in + this version of the library. + + The windowBits parameter is the base two logarithm of the window size + (the size of the history buffer). It should be in the range 8..15 for this + version of the library. Larger values of this parameter result in better + compression at the expense of memory usage. The default value is 15 if + deflateInit is used instead. + + windowBits can also be -8..-15 for raw deflate. In this case, -windowBits + determines the window size. deflate() will then generate raw deflate data + with no zlib header or trailer, and will not compute an adler32 check value. + + windowBits can also be greater than 15 for optional gzip encoding. Add + 16 to windowBits to write a simple gzip header and trailer around the + compressed data instead of a zlib wrapper. The gzip header will have no + file name, no extra data, no comment, no modification time (set to zero), no + header crc, and the operating system will be set to 255 (unknown). If a + gzip stream is being written, strm->adler is a crc32 instead of an adler32. + + The memLevel parameter specifies how much memory should be allocated + for the internal compression state. memLevel=1 uses minimum memory but is + slow and reduces compression ratio; memLevel=9 uses maximum memory for + optimal speed. The default value is 8. See zconf.h for total memory usage + as a function of windowBits and memLevel. + + The strategy parameter is used to tune the compression algorithm. Use the + value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a + filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no + string match), or Z_RLE to limit match distances to one (run-length + encoding). Filtered data consists mostly of small values with a somewhat + random distribution. In this case, the compression algorithm is tuned to + compress them better. The effect of Z_FILTERED is to force more Huffman + coding and less string matching; it is somewhat intermediate between + Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as + fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The + strategy parameter only affects the compression ratio but not the + correctness of the compressed output even if it is not set appropriately. + Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler + decoder for special applications. + + deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid + method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is + incompatible with the version assumed by the caller (ZLIB_VERSION). msg is + set to null if there is no error message. deflateInit2 does not perform any + compression: this will be done by deflate(). +*/ + +ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm, + const Bytef *dictionary, + uInt dictLength)); +/* + Initializes the compression dictionary from the given byte sequence + without producing any compressed output. When using the zlib format, this + function must be called immediately after deflateInit, deflateInit2 or + deflateReset, and before any call of deflate. When doing raw deflate, this + function must be called either before any call of deflate, or immediately + after the completion of a deflate block, i.e. after all input has been + consumed and all output has been delivered when using any of the flush + options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The + compressor and decompressor must use exactly the same dictionary (see + inflateSetDictionary). + + The dictionary should consist of strings (byte sequences) that are likely + to be encountered later in the data to be compressed, with the most commonly + used strings preferably put towards the end of the dictionary. Using a + dictionary is most useful when the data to be compressed is short and can be + predicted with good accuracy; the data can then be compressed better than + with the default empty dictionary. + + Depending on the size of the compression data structures selected by + deflateInit or deflateInit2, a part of the dictionary may in effect be + discarded, for example if the dictionary is larger than the window size + provided in deflateInit or deflateInit2. Thus the strings most likely to be + useful should be put at the end of the dictionary, not at the front. In + addition, the current implementation of deflate will use at most the window + size minus 262 bytes of the provided dictionary. + + Upon return of this function, strm->adler is set to the adler32 value + of the dictionary; the decompressor may later use this value to determine + which dictionary has been used by the compressor. (The adler32 value + applies to the whole dictionary even if only a subset of the dictionary is + actually used by the compressor.) If a raw deflate was requested, then the + adler32 value is not computed and strm->adler is not set. + + deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a + parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is + inconsistent (for example if deflate has already been called for this stream + or if not at a block boundary for raw deflate). deflateSetDictionary does + not perform any compression: this will be done by deflate(). +*/ + +ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest, + z_streamp source)); +/* + Sets the destination stream as a complete copy of the source stream. + + This function can be useful when several compression strategies will be + tried, for example when there are several ways of pre-processing the input + data with a filter. The streams that will be discarded should then be freed + by calling deflateEnd. Note that deflateCopy duplicates the internal + compression state which can be quite large, so this strategy is slow and can + consume lots of memory. + + deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if the source stream state was inconsistent + (such as zalloc being Z_NULL). msg is left unchanged in both source and + destination. +*/ + +ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm)); +/* + This function is equivalent to deflateEnd followed by deflateInit, + but does not free and reallocate all the internal compression state. The + stream will keep the same compression level and any other attributes that + may have been set by deflateInit2. + + deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being Z_NULL). +*/ + +ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm, + int level, + int strategy)); +/* + Dynamically update the compression level and compression strategy. The + interpretation of level and strategy is as in deflateInit2. This can be + used to switch between compression and straight copy of the input data, or + to switch to a different kind of input data requiring a different strategy. + If the compression level is changed, the input available so far is + compressed with the old level (and may be flushed); the new level will take + effect only at the next call of deflate(). + + Before the call of deflateParams, the stream state must be set as for + a call of deflate(), since the currently available input may have to be + compressed and flushed. In particular, strm->avail_out must be non-zero. + + deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source + stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR if + strm->avail_out was zero. +*/ + +ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm, + int good_length, + int max_lazy, + int nice_length, + int max_chain)); +/* + Fine tune deflate's internal compression parameters. This should only be + used by someone who understands the algorithm used by zlib's deflate for + searching for the best matching string, and even then only by the most + fanatic optimizer trying to squeeze out the last compressed bit for their + specific input data. Read the deflate.c source code for the meaning of the + max_lazy, good_length, nice_length, and max_chain parameters. + + deflateTune() can be called after deflateInit() or deflateInit2(), and + returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream. + */ + +ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm, + uLong sourceLen)); +/* + deflateBound() returns an upper bound on the compressed size after + deflation of sourceLen bytes. It must be called after deflateInit() or + deflateInit2(), and after deflateSetHeader(), if used. This would be used + to allocate an output buffer for deflation in a single pass, and so would be + called before deflate(). If that first deflate() call is provided the + sourceLen input bytes, an output buffer allocated to the size returned by + deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed + to return Z_STREAM_END. Note that it is possible for the compressed size to + be larger than the value returned by deflateBound() if flush options other + than Z_FINISH or Z_NO_FLUSH are used. +*/ + +ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm, + unsigned *pending, + int *bits)); +/* + deflatePending() returns the number of bytes and bits of output that have + been generated, but not yet provided in the available output. The bytes not + provided would be due to the available output space having being consumed. + The number of bits of output not provided are between 0 and 7, where they + await more bits to join them in order to fill out a full byte. If pending + or bits are Z_NULL, then those values are not set. + + deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. + */ + +ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm, + int bits, + int value)); +/* + deflatePrime() inserts bits in the deflate output stream. The intent + is that this function is used to start off the deflate output with the bits + leftover from a previous deflate stream when appending to it. As such, this + function can only be used for raw deflate, and must be used before the first + deflate() call after a deflateInit2() or deflateReset(). bits must be less + than or equal to 16, and that many of the least significant bits of value + will be inserted in the output. + + deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough + room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the + source stream state was inconsistent. +*/ + +ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm, + gz_headerp head)); +/* + deflateSetHeader() provides gzip header information for when a gzip + stream is requested by deflateInit2(). deflateSetHeader() may be called + after deflateInit2() or deflateReset() and before the first call of + deflate(). The text, time, os, extra field, name, and comment information + in the provided gz_header structure are written to the gzip header (xflag is + ignored -- the extra flags are set according to the compression level). The + caller must assure that, if not Z_NULL, name and comment are terminated with + a zero byte, and that if extra is not Z_NULL, that extra_len bytes are + available there. If hcrc is true, a gzip header crc is included. Note that + the current versions of the command-line version of gzip (up through version + 1.3.x) do not support header crc's, and will report that it is a "multi-part + gzip file" and give up. + + If deflateSetHeader is not used, the default gzip header has text false, + the time set to zero, and os set to 255, with no extra, name, or comment + fields. The gzip header is returned to the default state by deflateReset(). + + deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. +*/ + +/* +ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm, + int windowBits)); + + This is another version of inflateInit with an extra parameter. The + fields next_in, avail_in, zalloc, zfree and opaque must be initialized + before by the caller. + + The windowBits parameter is the base two logarithm of the maximum window + size (the size of the history buffer). It should be in the range 8..15 for + this version of the library. The default value is 15 if inflateInit is used + instead. windowBits must be greater than or equal to the windowBits value + provided to deflateInit2() while compressing, or it must be equal to 15 if + deflateInit2() was not used. If a compressed stream with a larger window + size is given as input, inflate() will return with the error code + Z_DATA_ERROR instead of trying to allocate a larger window. + + windowBits can also be zero to request that inflate use the window size in + the zlib header of the compressed stream. + + windowBits can also be -8..-15 for raw inflate. In this case, -windowBits + determines the window size. inflate() will then process raw deflate data, + not looking for a zlib or gzip header, not generating a check value, and not + looking for any check values for comparison at the end of the stream. This + is for use with other formats that use the deflate compressed data format + such as zip. Those formats provide their own check values. If a custom + format is developed using the raw deflate format for compressed data, it is + recommended that a check value such as an adler32 or a crc32 be applied to + the uncompressed data as is done in the zlib, gzip, and zip formats. For + most applications, the zlib format should be used as is. Note that comments + above on the use in deflateInit2() applies to the magnitude of windowBits. + + windowBits can also be greater than 15 for optional gzip decoding. Add + 32 to windowBits to enable zlib and gzip decoding with automatic header + detection, or add 16 to decode only the gzip format (the zlib format will + return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a + crc32 instead of an adler32. + + inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_VERSION_ERROR if the zlib library version is incompatible with the + version assumed by the caller, or Z_STREAM_ERROR if the parameters are + invalid, such as a null pointer to the structure. msg is set to null if + there is no error message. inflateInit2 does not perform any decompression + apart from possibly reading the zlib header if present: actual decompression + will be done by inflate(). (So next_in and avail_in may be modified, but + next_out and avail_out are unused and unchanged.) The current implementation + of inflateInit2() does not process any header information -- that is + deferred until inflate() is called. +*/ + +ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm, + const Bytef *dictionary, + uInt dictLength)); +/* + Initializes the decompression dictionary from the given uncompressed byte + sequence. This function must be called immediately after a call of inflate, + if that call returned Z_NEED_DICT. The dictionary chosen by the compressor + can be determined from the adler32 value returned by that call of inflate. + The compressor and decompressor must use exactly the same dictionary (see + deflateSetDictionary). For raw inflate, this function can be called at any + time to set the dictionary. If the provided dictionary is smaller than the + window and there is already data in the window, then the provided dictionary + will amend what's there. The application must insure that the dictionary + that was used for compression is provided. + + inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a + parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is + inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the + expected one (incorrect adler32 value). inflateSetDictionary does not + perform any decompression: this will be done by subsequent calls of + inflate(). +*/ + +ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm)); +/* + Skips invalid compressed data until a possible full flush point (see above + for the description of deflate with Z_FULL_FLUSH) can be found, or until all + available input is skipped. No output is provided. + + inflateSync searches for a 00 00 FF FF pattern in the compressed data. + All full flush points have this pattern, but not all occurences of this + pattern are full flush points. + + inflateSync returns Z_OK if a possible full flush point has been found, + Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point + has been found, or Z_STREAM_ERROR if the stream structure was inconsistent. + In the success case, the application may save the current current value of + total_in which indicates where valid compressed data was found. In the + error case, the application may repeatedly call inflateSync, providing more + input each time, until success or end of the input data. +*/ + +ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest, + z_streamp source)); +/* + Sets the destination stream as a complete copy of the source stream. + + This function can be useful when randomly accessing a large stream. The + first pass through the stream can periodically record the inflate state, + allowing restarting inflate at those points when randomly accessing the + stream. + + inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_STREAM_ERROR if the source stream state was inconsistent + (such as zalloc being Z_NULL). msg is left unchanged in both source and + destination. +*/ + +ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm)); +/* + This function is equivalent to inflateEnd followed by inflateInit, + but does not free and reallocate all the internal decompression state. The + stream will keep attributes that may have been set by inflateInit2. + + inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being Z_NULL). +*/ + +ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm, + int windowBits)); +/* + This function is the same as inflateReset, but it also permits changing + the wrap and window size requests. The windowBits parameter is interpreted + the same as it is for inflateInit2. + + inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent (such as zalloc or state being Z_NULL), or if + the windowBits parameter is invalid. +*/ + +ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm, + int bits, + int value)); +/* + This function inserts bits in the inflate input stream. The intent is + that this function is used to start inflating at a bit position in the + middle of a byte. The provided bits will be used before any bytes are used + from next_in. This function should only be used with raw inflate, and + should be used before the first inflate() call after inflateInit2() or + inflateReset(). bits must be less than or equal to 16, and that many of the + least significant bits of value will be inserted in the input. + + If bits is negative, then the input stream bit buffer is emptied. Then + inflatePrime() can be called again to put bits in the buffer. This is used + to clear out bits leftover after feeding inflate a block description prior + to feeding inflate codes. + + inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. +*/ + +ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm)); +/* + This function returns two values, one in the lower 16 bits of the return + value, and the other in the remaining upper bits, obtained by shifting the + return value down 16 bits. If the upper value is -1 and the lower value is + zero, then inflate() is currently decoding information outside of a block. + If the upper value is -1 and the lower value is non-zero, then inflate is in + the middle of a stored block, with the lower value equaling the number of + bytes from the input remaining to copy. If the upper value is not -1, then + it is the number of bits back from the current bit position in the input of + the code (literal or length/distance pair) currently being processed. In + that case the lower value is the number of bytes already emitted for that + code. + + A code is being processed if inflate is waiting for more input to complete + decoding of the code, or if it has completed decoding but is waiting for + more output space to write the literal or match data. + + inflateMark() is used to mark locations in the input data for random + access, which may be at bit positions, and to note those cases where the + output of a code may span boundaries of random access blocks. The current + location in the input stream can be determined from avail_in and data_type + as noted in the description for the Z_BLOCK flush parameter for inflate. + + inflateMark returns the value noted above or -1 << 16 if the provided + source stream state was inconsistent. +*/ + +ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm, + gz_headerp head)); +/* + inflateGetHeader() requests that gzip header information be stored in the + provided gz_header structure. inflateGetHeader() may be called after + inflateInit2() or inflateReset(), and before the first call of inflate(). + As inflate() processes the gzip stream, head->done is zero until the header + is completed, at which time head->done is set to one. If a zlib stream is + being decoded, then head->done is set to -1 to indicate that there will be + no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be + used to force inflate() to return immediately after header processing is + complete and before any actual data is decompressed. + + The text, time, xflags, and os fields are filled in with the gzip header + contents. hcrc is set to true if there is a header CRC. (The header CRC + was valid if done is set to one.) If extra is not Z_NULL, then extra_max + contains the maximum number of bytes to write to extra. Once done is true, + extra_len contains the actual extra field length, and extra contains the + extra field, or that field truncated if extra_max is less than extra_len. + If name is not Z_NULL, then up to name_max characters are written there, + terminated with a zero unless the length is greater than name_max. If + comment is not Z_NULL, then up to comm_max characters are written there, + terminated with a zero unless the length is greater than comm_max. When any + of extra, name, or comment are not Z_NULL and the respective field is not + present in the header, then that field is set to Z_NULL to signal its + absence. This allows the use of deflateSetHeader() with the returned + structure to duplicate the header. However if those fields are set to + allocated memory, then the application will need to save those pointers + elsewhere so that they can be eventually freed. + + If inflateGetHeader is not used, then the header information is simply + discarded. The header is always checked for validity, including the header + CRC if present. inflateReset() will reset the process to discard the header + information. The application would need to call inflateGetHeader() again to + retrieve the header from the next gzip stream. + + inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source + stream state was inconsistent. +*/ + +/* +ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits, + unsigned char FAR *window)); + + Initialize the internal stream state for decompression using inflateBack() + calls. The fields zalloc, zfree and opaque in strm must be initialized + before the call. If zalloc and zfree are Z_NULL, then the default library- + derived memory allocation routines are used. windowBits is the base two + logarithm of the window size, in the range 8..15. window is a caller + supplied buffer of that size. Except for special applications where it is + assured that deflate was used with small window sizes, windowBits must be 15 + and a 32K byte window must be supplied to be able to decompress general + deflate streams. + + See inflateBack() for the usage of these routines. + + inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of + the parameters are invalid, Z_MEM_ERROR if the internal state could not be + allocated, or Z_VERSION_ERROR if the version of the library does not match + the version of the header file. +*/ + +typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *)); +typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned)); + +ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm, + in_func in, void FAR *in_desc, + out_func out, void FAR *out_desc)); +/* + inflateBack() does a raw inflate with a single call using a call-back + interface for input and output. This is more efficient than inflate() for + file i/o applications in that it avoids copying between the output and the + sliding window by simply making the window itself the output buffer. This + function trusts the application to not change the output buffer passed by + the output function, at least until inflateBack() returns. + + inflateBackInit() must be called first to allocate the internal state + and to initialize the state with the user-provided window buffer. + inflateBack() may then be used multiple times to inflate a complete, raw + deflate stream with each call. inflateBackEnd() is then called to free the + allocated state. + + A raw deflate stream is one with no zlib or gzip header or trailer. + This routine would normally be used in a utility that reads zip or gzip + files and writes out uncompressed files. The utility would decode the + header and process the trailer on its own, hence this routine expects only + the raw deflate stream to decompress. This is different from the normal + behavior of inflate(), which expects either a zlib or gzip header and + trailer around the deflate stream. + + inflateBack() uses two subroutines supplied by the caller that are then + called by inflateBack() for input and output. inflateBack() calls those + routines until it reads a complete deflate stream and writes out all of the + uncompressed data, or until it encounters an error. The function's + parameters and return types are defined above in the in_func and out_func + typedefs. inflateBack() will call in(in_desc, &buf) which should return the + number of bytes of provided input, and a pointer to that input in buf. If + there is no input available, in() must return zero--buf is ignored in that + case--and inflateBack() will return a buffer error. inflateBack() will call + out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out() + should return zero on success, or non-zero on failure. If out() returns + non-zero, inflateBack() will return with an error. Neither in() nor out() + are permitted to change the contents of the window provided to + inflateBackInit(), which is also the buffer that out() uses to write from. + The length written by out() will be at most the window size. Any non-zero + amount of input may be provided by in(). + + For convenience, inflateBack() can be provided input on the first call by + setting strm->next_in and strm->avail_in. If that input is exhausted, then + in() will be called. Therefore strm->next_in must be initialized before + calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called + immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in + must also be initialized, and then if strm->avail_in is not zero, input will + initially be taken from strm->next_in[0 .. strm->avail_in - 1]. + + The in_desc and out_desc parameters of inflateBack() is passed as the + first parameter of in() and out() respectively when they are called. These + descriptors can be optionally used to pass any information that the caller- + supplied in() and out() functions need to do their job. + + On return, inflateBack() will set strm->next_in and strm->avail_in to + pass back any unused input that was provided by the last in() call. The + return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR + if in() or out() returned an error, Z_DATA_ERROR if there was a format error + in the deflate stream (in which case strm->msg is set to indicate the nature + of the error), or Z_STREAM_ERROR if the stream was not properly initialized. + In the case of Z_BUF_ERROR, an input or output error can be distinguished + using strm->next_in which will be Z_NULL only if in() returned an error. If + strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning + non-zero. (in() will always be called before out(), so strm->next_in is + assured to be defined if out() returns non-zero.) Note that inflateBack() + cannot return Z_OK. +*/ + +ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm)); +/* + All memory allocated by inflateBackInit() is freed. + + inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream + state was inconsistent. +*/ + +ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void)); +/* Return flags indicating compile-time options. + + Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other: + 1.0: size of uInt + 3.2: size of uLong + 5.4: size of voidpf (pointer) + 7.6: size of z_off_t + + Compiler, assembler, and debug options: + 8: DEBUG + 9: ASMV or ASMINF -- use ASM code + 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention + 11: 0 (reserved) + + One-time table building (smaller code, but not thread-safe if true): + 12: BUILDFIXED -- build static block decoding tables when needed + 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed + 14,15: 0 (reserved) + + Library content (indicates missing functionality): + 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking + deflate code when not needed) + 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect + and decode gzip streams (to avoid linking crc code) + 18-19: 0 (reserved) + + Operation variations (changes in library functionality): + 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate + 21: FASTEST -- deflate algorithm with only one, lowest compression level + 22,23: 0 (reserved) + + The sprintf variant used by gzprintf (zero is best): + 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format + 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure! + 26: 0 = returns value, 1 = void -- 1 means inferred string length returned + + Remainder: + 27-31: 0 (reserved) + */ + +#ifndef Z_SOLO + + /* utility functions */ + +/* + The following utility functions are implemented on top of the basic + stream-oriented functions. To simplify the interface, some default options + are assumed (compression level and memory usage, standard memory allocation + functions). The source code of these utility functions can be modified if + you need special options. +*/ + +ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen)); +/* + Compresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total size + of the destination buffer, which must be at least the value returned by + compressBound(sourceLen). Upon exit, destLen is the actual size of the + compressed buffer. + + compress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer. +*/ + +ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen, + int level)); +/* + Compresses the source buffer into the destination buffer. The level + parameter has the same meaning as in deflateInit. sourceLen is the byte + length of the source buffer. Upon entry, destLen is the total size of the + destination buffer, which must be at least the value returned by + compressBound(sourceLen). Upon exit, destLen is the actual size of the + compressed buffer. + + compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough + memory, Z_BUF_ERROR if there was not enough room in the output buffer, + Z_STREAM_ERROR if the level parameter is invalid. +*/ + +ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen)); +/* + compressBound() returns an upper bound on the compressed size after + compress() or compress2() on sourceLen bytes. It would be used before a + compress() or compress2() call to allocate the destination buffer. +*/ + +ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen, + const Bytef *source, uLong sourceLen)); +/* + Decompresses the source buffer into the destination buffer. sourceLen is + the byte length of the source buffer. Upon entry, destLen is the total size + of the destination buffer, which must be large enough to hold the entire + uncompressed data. (The size of the uncompressed data must have been saved + previously by the compressor and transmitted to the decompressor by some + mechanism outside the scope of this compression library.) Upon exit, destLen + is the actual size of the uncompressed buffer. + + uncompress returns Z_OK if success, Z_MEM_ERROR if there was not + enough memory, Z_BUF_ERROR if there was not enough room in the output + buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In + the case where there is not enough room, uncompress() will fill the output + buffer with the uncompressed data up to that point. +*/ + + /* gzip file access functions */ + +/* + This library supports reading and writing files in gzip (.gz) format with + an interface similar to that of stdio, using the functions that start with + "gz". The gzip format is different from the zlib format. gzip is a gzip + wrapper, documented in RFC 1952, wrapped around a deflate stream. +*/ + +typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */ + +/* +ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode)); + + Opens a gzip (.gz) file for reading or writing. The mode parameter is as + in fopen ("rb" or "wb") but can also include a compression level ("wb9") or + a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only + compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F' + for fixed code compression as in "wb9F". (See the description of + deflateInit2 for more information about the strategy parameter.) 'T' will + request transparent writing or appending with no compression and not using + the gzip format. + + "a" can be used instead of "w" to request that the gzip stream that will + be written be appended to the file. "+" will result in an error, since + reading and writing to the same gzip file is not supported. + + These functions, as well as gzip, will read and decode a sequence of gzip + streams in a file. The append function of gzopen() can be used to create + such a file. (Also see gzflush() for another way to do this.) When + appending, gzopen does not test whether the file begins with a gzip stream, + nor does it look for the end of the gzip streams to begin appending. gzopen + will simply append a gzip stream to the existing file. + + gzopen can be used to read a file which is not in gzip format; in this + case gzread will directly read from the file without decompression. When + reading, this will be detected automatically by looking for the magic two- + byte gzip header. + + gzopen returns NULL if the file could not be opened, if there was + insufficient memory to allocate the gzFile state, or if an invalid mode was + specified (an 'r', 'w', or 'a' was not provided, or '+' was provided). + errno can be checked to determine if the reason gzopen failed was that the + file could not be opened. +*/ + +ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode)); +/* + gzdopen associates a gzFile with the file descriptor fd. File descriptors + are obtained from calls like open, dup, creat, pipe or fileno (if the file + has been previously opened with fopen). The mode parameter is as in gzopen. + + The next call of gzclose on the returned gzFile will also close the file + descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor + fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd, + mode);. The duplicated descriptor should be saved to avoid a leak, since + gzdopen does not close fd if it fails. If you are using fileno() to get the + file descriptor from a FILE *, then you will have to use dup() to avoid + double-close()ing the file descriptor. Both gzclose() and fclose() will + close the associated file descriptor, so they need to have different file + descriptors. + + gzdopen returns NULL if there was insufficient memory to allocate the + gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not + provided, or '+' was provided), or if fd is -1. The file descriptor is not + used until the next gz* read, write, seek, or close operation, so gzdopen + will not detect if fd is invalid (unless fd is -1). +*/ + +ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size)); +/* + Set the internal buffer size used by this library's functions. The + default buffer size is 8192 bytes. This function must be called after + gzopen() or gzdopen(), and before any other calls that read or write the + file. The buffer memory allocation is always deferred to the first read or + write. Two buffers are allocated, either both of the specified size when + writing, or one of the specified size and the other twice that size when + reading. A larger buffer size of, for example, 64K or 128K bytes will + noticeably increase the speed of decompression (reading). + + The new buffer size also affects the maximum length for gzprintf(). + + gzbuffer() returns 0 on success, or -1 on failure, such as being called + too late. +*/ + +ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy)); +/* + Dynamically update the compression level or strategy. See the description + of deflateInit2 for the meaning of these parameters. + + gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not + opened for writing. +*/ + +ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len)); +/* + Reads the given number of uncompressed bytes from the compressed file. If + the input file is not in gzip format, gzread copies the given number of + bytes into the buffer directly from the file. + + After reaching the end of a gzip stream in the input, gzread will continue + to read, looking for another gzip stream. Any number of gzip streams may be + concatenated in the input file, and will all be decompressed by gzread(). + If something other than a gzip stream is encountered after a gzip stream, + that remaining trailing garbage is ignored (and no error is returned). + + gzread can be used to read a gzip file that is being concurrently written. + Upon reaching the end of the input, gzread will return with the available + data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then + gzclearerr can be used to clear the end of file indicator in order to permit + gzread to be tried again. Z_OK indicates that a gzip stream was completed + on the last gzread. Z_BUF_ERROR indicates that the input file ended in the + middle of a gzip stream. Note that gzread does not return -1 in the event + of an incomplete gzip stream. This error is deferred until gzclose(), which + will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip + stream. Alternatively, gzerror can be used before gzclose to detect this + case. + + gzread returns the number of uncompressed bytes actually read, less than + len for end of file, or -1 for error. +*/ + +ZEXTERN int ZEXPORT gzwrite OF((gzFile file, + voidpc buf, unsigned len)); +/* + Writes the given number of uncompressed bytes into the compressed file. + gzwrite returns the number of uncompressed bytes written or 0 in case of + error. +*/ + +ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...)); +/* + Converts, formats, and writes the arguments to the compressed file under + control of the format string, as in fprintf. gzprintf returns the number of + uncompressed bytes actually written, or 0 in case of error. The number of + uncompressed bytes written is limited to 8191, or one less than the buffer + size given to gzbuffer(). The caller should assure that this limit is not + exceeded. If it is exceeded, then gzprintf() will return an error (0) with + nothing written. In this case, there may also be a buffer overflow with + unpredictable consequences, which is possible only if zlib was compiled with + the insecure functions sprintf() or vsprintf() because the secure snprintf() + or vsnprintf() functions were not available. This can be determined using + zlibCompileFlags(). +*/ + +ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s)); +/* + Writes the given null-terminated string to the compressed file, excluding + the terminating null character. + + gzputs returns the number of characters written, or -1 in case of error. +*/ + +ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len)); +/* + Reads bytes from the compressed file until len-1 characters are read, or a + newline character is read and transferred to buf, or an end-of-file + condition is encountered. If any characters are read or if len == 1, the + string is terminated with a null character. If no characters are read due + to an end-of-file or len < 1, then the buffer is left untouched. + + gzgets returns buf which is a null-terminated string, or it returns NULL + for end-of-file or in case of error. If there was an error, the contents at + buf are indeterminate. +*/ + +ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c)); +/* + Writes c, converted to an unsigned char, into the compressed file. gzputc + returns the value that was written, or -1 in case of error. +*/ + +ZEXTERN int ZEXPORT gzgetc OF((gzFile file)); +/* + Reads one byte from the compressed file. gzgetc returns this byte or -1 + in case of end of file or error. This is implemented as a macro for speed. + As such, it does not do all of the checking the other functions do. I.e. + it does not check to see if file is NULL, nor whether the structure file + points to has been clobbered or not. +*/ + +ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file)); +/* + Push one character back onto the stream to be read as the first character + on the next read. At least one character of push-back is allowed. + gzungetc() returns the character pushed, or -1 on failure. gzungetc() will + fail if c is -1, and may fail if a character has been pushed but not read + yet. If gzungetc is used immediately after gzopen or gzdopen, at least the + output buffer size of pushed characters is allowed. (See gzbuffer above.) + The pushed character will be discarded if the stream is repositioned with + gzseek() or gzrewind(). +*/ + +ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush)); +/* + Flushes all pending output into the compressed file. The parameter flush + is as in the deflate() function. The return value is the zlib error number + (see function gzerror below). gzflush is only permitted when writing. + + If the flush parameter is Z_FINISH, the remaining data is written and the + gzip stream is completed in the output. If gzwrite() is called again, a new + gzip stream will be started in the output. gzread() is able to read such + concatented gzip streams. + + gzflush should be called only when strictly necessary because it will + degrade compression if called too often. +*/ + +/* +ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file, + z_off_t offset, int whence)); + + Sets the starting position for the next gzread or gzwrite on the given + compressed file. The offset represents a number of bytes in the + uncompressed data stream. The whence parameter is defined as in lseek(2); + the value SEEK_END is not supported. + + If the file is opened for reading, this function is emulated but can be + extremely slow. If the file is opened for writing, only forward seeks are + supported; gzseek then compresses a sequence of zeroes up to the new + starting position. + + gzseek returns the resulting offset location as measured in bytes from + the beginning of the uncompressed stream, or -1 in case of error, in + particular if the file is opened for writing and the new starting position + would be before the current position. +*/ + +ZEXTERN int ZEXPORT gzrewind OF((gzFile file)); +/* + Rewinds the given file. This function is supported only for reading. + + gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET) +*/ + +/* +ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file)); + + Returns the starting position for the next gzread or gzwrite on the given + compressed file. This position represents a number of bytes in the + uncompressed data stream, and is zero when starting, even if appending or + reading a gzip stream from the middle of a file using gzdopen(). + + gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR) +*/ + +/* +ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file)); + + Returns the current offset in the file being read or written. This offset + includes the count of bytes that precede the gzip stream, for example when + appending or when using gzdopen() for reading. When reading, the offset + does not include as yet unused buffered input. This information can be used + for a progress indicator. On error, gzoffset() returns -1. +*/ + +ZEXTERN int ZEXPORT gzeof OF((gzFile file)); +/* + Returns true (1) if the end-of-file indicator has been set while reading, + false (0) otherwise. Note that the end-of-file indicator is set only if the + read tried to go past the end of the input, but came up short. Therefore, + just like feof(), gzeof() may return false even if there is no more data to + read, in the event that the last read request was for the exact number of + bytes remaining in the input file. This will happen if the input file size + is an exact multiple of the buffer size. + + If gzeof() returns true, then the read functions will return no more data, + unless the end-of-file indicator is reset by gzclearerr() and the input file + has grown since the previous end of file was detected. +*/ + +ZEXTERN int ZEXPORT gzdirect OF((gzFile file)); +/* + Returns true (1) if file is being copied directly while reading, or false + (0) if file is a gzip stream being decompressed. + + If the input file is empty, gzdirect() will return true, since the input + does not contain a gzip stream. + + If gzdirect() is used immediately after gzopen() or gzdopen() it will + cause buffers to be allocated to allow reading the file to determine if it + is a gzip file. Therefore if gzbuffer() is used, it should be called before + gzdirect(). + + When writing, gzdirect() returns true (1) if transparent writing was + requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note: + gzdirect() is not needed when writing. Transparent writing must be + explicitly requested, so the application already knows the answer. When + linking statically, using gzdirect() will include all of the zlib code for + gzip file reading and decompression, which may not be desired.) +*/ + +ZEXTERN int ZEXPORT gzclose OF((gzFile file)); +/* + Flushes all pending output if necessary, closes the compressed file and + deallocates the (de)compression state. Note that once file is closed, you + cannot call gzerror with file, since its structures have been deallocated. + gzclose must not be called more than once on the same file, just as free + must not be called more than once on the same allocation. + + gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a + file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the + last read ended in the middle of a gzip stream, or Z_OK on success. +*/ + +ZEXTERN int ZEXPORT gzclose_r OF((gzFile file)); +ZEXTERN int ZEXPORT gzclose_w OF((gzFile file)); +/* + Same as gzclose(), but gzclose_r() is only for use when reading, and + gzclose_w() is only for use when writing or appending. The advantage to + using these instead of gzclose() is that they avoid linking in zlib + compression or decompression code that is not used when only reading or only + writing respectively. If gzclose() is used, then both compression and + decompression code will be included the application when linking to a static + zlib library. +*/ + +ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum)); +/* + Returns the error message for the last error which occurred on the given + compressed file. errnum is set to zlib error number. If an error occurred + in the file system and not in the compression library, errnum is set to + Z_ERRNO and the application may consult errno to get the exact error code. + + The application must not modify the returned string. Future calls to + this function may invalidate the previously returned string. If file is + closed, then the string previously returned by gzerror will no longer be + available. + + gzerror() should be used to distinguish errors from end-of-file for those + functions above that do not distinguish those cases in their return values. +*/ + +ZEXTERN void ZEXPORT gzclearerr OF((gzFile file)); +/* + Clears the error and end-of-file flags for file. This is analogous to the + clearerr() function in stdio. This is useful for continuing to read a gzip + file that is being written concurrently. +*/ + +#endif /* !Z_SOLO */ + + /* checksum functions */ + +/* + These functions are not related to compression but are exported + anyway because they might be useful in applications using the compression + library. +*/ + +ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len)); +/* + Update a running Adler-32 checksum with the bytes buf[0..len-1] and + return the updated checksum. If buf is Z_NULL, this function returns the + required initial value for the checksum. + + An Adler-32 checksum is almost as reliable as a CRC32 but can be computed + much faster. + + Usage example: + + uLong adler = adler32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + adler = adler32(adler, buffer, length); + } + if (adler != original_adler) error(); +*/ + +/* +ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2, + z_off_t len2)); + + Combine two Adler-32 checksums into one. For two sequences of bytes, seq1 + and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for + each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of + seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note + that the z_off_t type (like off_t) is a signed integer. If len2 is + negative, the result has no meaning or utility. +*/ + +ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len)); +/* + Update a running CRC-32 with the bytes buf[0..len-1] and return the + updated CRC-32. If buf is Z_NULL, this function returns the required + initial value for the for the crc. Pre- and post-conditioning (one's + complement) is performed within this function so it shouldn't be done by the + application. + + Usage example: + + uLong crc = crc32(0L, Z_NULL, 0); + + while (read_buffer(buffer, length) != EOF) { + crc = crc32(crc, buffer, length); + } + if (crc != original_crc) error(); +*/ + +/* +ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2)); + + Combine two CRC-32 check values into one. For two sequences of bytes, + seq1 and seq2 with lengths len1 and len2, CRC-32 check values were + calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32 + check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and + len2. +*/ + + + /* various hacks, don't look :) */ + +/* deflateInit and inflateInit are macros to allow checking the zlib version + * and the compiler's view of z_stream: + */ +ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level, + const char *version, int stream_size)); +ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm, + const char *version, int stream_size)); +ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method, + int windowBits, int memLevel, + int strategy, const char *version, + int stream_size)); +ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits, + const char *version, int stream_size)); +ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits, + unsigned char FAR *window, + const char *version, + int stream_size)); +#define deflateInit(strm, level) \ + deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream)) +#define inflateInit(strm) \ + inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream)) +#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \ + deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\ + (strategy), ZLIB_VERSION, (int)sizeof(z_stream)) +#define inflateInit2(strm, windowBits) \ + inflateInit2_((strm), (windowBits), ZLIB_VERSION, \ + (int)sizeof(z_stream)) +#define inflateBackInit(strm, windowBits, window) \ + inflateBackInit_((strm), (windowBits), (window), \ + ZLIB_VERSION, (int)sizeof(z_stream)) + +#ifndef Z_SOLO + +/* gzgetc() macro and its supporting function and exposed data structure. Note + * that the real internal state is much larger than the exposed structure. + * This abbreviated structure exposes just enough for the gzgetc() macro. The + * user should not mess with these exposed elements, since their names or + * behavior could change in the future, perhaps even capriciously. They can + * only be used by the gzgetc() macro. You have been warned. + */ +struct gzFile_s { + unsigned have; + unsigned char *next; + z_off64_t pos; +}; +ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); +#define gzgetc(g) \ + ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc_(g)) + +/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or + * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if + * both are true, the application gets the *64 functions, and the regular + * functions are changed to 64 bits) -- in case these are set on systems + * without large file support, _LFS64_LARGEFILE must also be true + */ +#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0 + ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); + ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); + ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); + ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); + ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t)); + ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t)); +#endif + +#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0 +# ifdef Z_PREFIX_SET +# define z_gzopen z_gzopen64 +# define z_gzseek z_gzseek64 +# define z_gztell z_gztell64 +# define z_gzoffset z_gzoffset64 +# define z_adler32_combine z_adler32_combine64 +# define z_crc32_combine z_crc32_combine64 +# else +# define gzopen gzopen64 +# define gzseek gzseek64 +# define gztell gztell64 +# define gzoffset gzoffset64 +# define adler32_combine adler32_combine64 +# define crc32_combine crc32_combine64 +# endif +# ifndef _LARGEFILE64_SOURCE + ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *)); + ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int)); + ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile)); + ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile)); + ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); + ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); +# endif +#else + ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *)); + ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int)); + ZEXTERN z_off_t ZEXPORT gztell OF((gzFile)); + ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile)); + ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t)); + ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t)); +#endif + +#else /* Z_SOLO */ + + ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t)); + ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t)); + +#endif /* !Z_SOLO */ + +/* hack for buggy compilers */ +#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL) + struct internal_state {int dummy;}; +#endif + +/* undocumented functions */ +ZEXTERN const char * ZEXPORT zError OF((int)); +ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp)); +ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void)); +ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int)); +ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp)); +ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp)); +#ifndef Z_SOLO + ZEXTERN unsigned long ZEXPORT gzflags OF((void)); +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* ZLIB_H */ diff --git a/sdk-modifications/libsrc/zlib/zlib.mk b/sdk-modifications/libsrc/zlib/zlib.mk new file mode 100644 index 0000000..94ea103 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/zlib.mk @@ -0,0 +1,10 @@ +# zlib.mk + +SRC += $(wildcard $(ZLIB_DIR)/*.c) + +SSRC += + +INC += -I$(ZLIB_DIR) + +CFLAGS += + diff --git a/sdk-modifications/libsrc/zlib/zutil.c b/sdk-modifications/libsrc/zlib/zutil.c new file mode 100644 index 0000000..8a1d242 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/zutil.c @@ -0,0 +1,301 @@ +/* zutil.c -- target dependent utility functions for the compression library + * Copyright (C) 1995-2005, 2010, 2011 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* @(#) $Id$ */ + +#include "zutil.h" + +#ifndef NO_DUMMY_DECL +struct internal_state {int dummy;}; /* for buggy compilers */ +#endif + +const char * const z_errmsg[10] = { +"need dictionary", /* Z_NEED_DICT 2 */ +"stream end", /* Z_STREAM_END 1 */ +"", /* Z_OK 0 */ +"file error", /* Z_ERRNO (-1) */ +"stream error", /* Z_STREAM_ERROR (-2) */ +"data error", /* Z_DATA_ERROR (-3) */ +"insufficient memory", /* Z_MEM_ERROR (-4) */ +"buffer error", /* Z_BUF_ERROR (-5) */ +"incompatible version",/* Z_VERSION_ERROR (-6) */ +""}; + + +const char * ZEXPORT zlibVersion() +{ + return ZLIB_VERSION; +} + +uLong ZEXPORT zlibCompileFlags() +{ + uLong flags; + + flags = 0; + switch ((int)(sizeof(uInt))) { + case 2: break; + case 4: flags += 1; break; + case 8: flags += 2; break; + default: flags += 3; + } + switch ((int)(sizeof(uLong))) { + case 2: break; + case 4: flags += 1 << 2; break; + case 8: flags += 2 << 2; break; + default: flags += 3 << 2; + } + switch ((int)(sizeof(voidpf))) { + case 2: break; + case 4: flags += 1 << 4; break; + case 8: flags += 2 << 4; break; + default: flags += 3 << 4; + } + switch ((int)(sizeof(z_off_t))) { + case 2: break; + case 4: flags += 1 << 6; break; + case 8: flags += 2 << 6; break; + default: flags += 3 << 6; + } +#ifdef DEBUG + flags += 1 << 8; +#endif +#if defined(ASMV) || defined(ASMINF) + flags += 1 << 9; +#endif +#ifdef ZLIB_WINAPI + flags += 1 << 10; +#endif +#ifdef BUILDFIXED + flags += 1 << 12; +#endif +#ifdef DYNAMIC_CRC_TABLE + flags += 1 << 13; +#endif +#ifdef NO_GZCOMPRESS + flags += 1L << 16; +#endif +#ifdef NO_GZIP + flags += 1L << 17; +#endif +#ifdef PKZIP_BUG_WORKAROUND + flags += 1L << 20; +#endif +#ifdef FASTEST + flags += 1L << 21; +#endif +#ifdef Z_SOLO + return flags; +#else + return flags + gzflags(); +#endif +} + +#ifdef DEBUG + +# ifndef verbose +# define verbose 0 +# endif +int ZLIB_INTERNAL z_verbose = verbose; + +void ZLIB_INTERNAL z_error (m) + char *m; +{ + fprintf(stderr, "%s\n", m); + exit(1); +} +#endif + +/* exported to allow conversion of error code to string for compress() and + * uncompress() + */ +const char * ZEXPORT zError(err) + int err; +{ + return ERR_MSG(err); +} + +#if defined(_WIN32_WCE) + /* The Microsoft C Run-Time Library for Windows CE doesn't have + * errno. We define it as a global variable to simplify porting. + * Its value is always 0 and should not be used. + */ + int errno = 0; +#endif + +#ifndef HAVE_MEMCPY + +void ZLIB_INTERNAL zmemcpy(dest, source, len) + Bytef* dest; + const Bytef* source; + uInt len; +{ + if (len == 0) return; + do { + *dest++ = *source++; /* ??? to be unrolled */ + } while (--len != 0); +} + +int ZLIB_INTERNAL zmemcmp(s1, s2, len) + const Bytef* s1; + const Bytef* s2; + uInt len; +{ + uInt j; + + for (j = 0; j < len; j++) { + if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1; + } + return 0; +} + +void ZLIB_INTERNAL zmemzero(dest, len) + Bytef* dest; + uInt len; +{ + if (len == 0) return; + do { + *dest++ = 0; /* ??? to be unrolled */ + } while (--len != 0); +} +#endif + +#ifndef Z_SOLO + +#ifdef SYS16BIT + +#ifdef __TURBOC__ +/* Turbo C in 16-bit mode */ + +# define MY_ZCALLOC + +/* Turbo C malloc() does not allow dynamic allocation of 64K bytes + * and farmalloc(64K) returns a pointer with an offset of 8, so we + * must fix the pointer. Warning: the pointer must be put back to its + * original form in order to free it, use zcfree(). + */ + +#define MAX_PTR 10 +/* 10*64K = 640K */ + +local int next_ptr = 0; + +typedef struct ptr_table_s { + voidpf org_ptr; + voidpf new_ptr; +} ptr_table; + +local ptr_table table[MAX_PTR]; +/* This table is used to remember the original form of pointers + * to large buffers (64K). Such pointers are normalized with a zero offset. + * Since MSDOS is not a preemptive multitasking OS, this table is not + * protected from concurrent access. This hack doesn't work anyway on + * a protected system like OS/2. Use Microsoft C instead. + */ + +voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size) +{ + voidpf buf = opaque; /* just to make some compilers happy */ + ulg bsize = (ulg)items*size; + + /* If we allocate less than 65520 bytes, we assume that farmalloc + * will return a usable pointer which doesn't have to be normalized. + */ + if (bsize < 65520L) { + buf = farmalloc(bsize); + if (*(ush*)&buf != 0) return buf; + } else { + buf = farmalloc(bsize + 16L); + } + if (buf == NULL || next_ptr >= MAX_PTR) return NULL; + table[next_ptr].org_ptr = buf; + + /* Normalize the pointer to seg:0 */ + *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4; + *(ush*)&buf = 0; + table[next_ptr++].new_ptr = buf; + return buf; +} + +void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) +{ + int n; + if (*(ush*)&ptr != 0) { /* object < 64K */ + farfree(ptr); + return; + } + /* Find the original pointer */ + for (n = 0; n < next_ptr; n++) { + if (ptr != table[n].new_ptr) continue; + + farfree(table[n].org_ptr); + while (++n < next_ptr) { + table[n-1] = table[n]; + } + next_ptr--; + return; + } + ptr = opaque; /* just to make some compilers happy */ + Assert(0, "zcfree: ptr not found"); +} + +#endif /* __TURBOC__ */ + + +#ifdef M_I86 +/* Microsoft C in 16-bit mode */ + +# define MY_ZCALLOC + +#if (!defined(_MSC_VER) || (_MSC_VER <= 600)) +# define _halloc halloc +# define _hfree hfree +#endif + +voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size) +{ + if (opaque) opaque = 0; /* to make compiler happy */ + return _halloc((long)items, size); +} + +void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) +{ + if (opaque) opaque = 0; /* to make compiler happy */ + _hfree(ptr); +} + +#endif /* M_I86 */ + +#endif /* SYS16BIT */ + + +#ifndef MY_ZCALLOC /* Any system without a special alloc function */ + +#ifndef STDC +extern voidp malloc OF((uInt size)); +extern voidp calloc OF((uInt items, uInt size)); +extern void free OF((voidpf ptr)); +#endif + +voidpf ZLIB_INTERNAL zcalloc (opaque, items, size) + voidpf opaque; + unsigned items; + unsigned size; +{ + if (opaque) items += size - size; /* make compiler happy */ + return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) : + (voidpf)calloc(items, size); +} + +void ZLIB_INTERNAL zcfree (opaque, ptr) + voidpf opaque; + voidpf ptr; +{ + free(ptr); + if (opaque) return; /* make compiler happy */ +} + +#endif /* MY_ZCALLOC */ + +#endif /* !Z_SOLO */ diff --git a/sdk-modifications/libsrc/zlib/zutil.h b/sdk-modifications/libsrc/zlib/zutil.h new file mode 100644 index 0000000..d8575e0 --- /dev/null +++ b/sdk-modifications/libsrc/zlib/zutil.h @@ -0,0 +1,254 @@ +/* zutil.h -- internal interface and configuration of the compression library + * Copyright (C) 1995-2011 Jean-loup Gailly. + * For conditions of distribution and use, see copyright notice in zlib.h + */ + +/* WARNING: this file should *not* be used by applications. It is + part of the implementation of the compression library and is + subject to change. Applications should only use zlib.h. + */ + +/* @(#) $Id$ */ + +#ifndef ZUTIL_H +#define ZUTIL_H + +#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) +# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) +#else +# define ZLIB_INTERNAL +#endif + +#include "zlib.h" + +#include <ds2_malloc.h> +#include <fs_api.h> +#include <ds2_unistd.h> + +# include <stddef.h> + +#if defined(STDC) && !defined(Z_SOLO) +# if !(defined(_WIN32_WCE) && defined(_MSC_VER)) +//# include <stddef.h> +# endif +//# include <string.h> +//# include <stdlib.h> +#endif + +#ifdef Z_SOLO + typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ +#endif + +#ifndef local +# define local static +#endif +/* compile with -Dlocal if your debugger can't find static symbols */ + +typedef unsigned char uch; +typedef uch FAR uchf; +typedef unsigned short ush; +typedef ush FAR ushf; +typedef unsigned long ulg; + +extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ +/* (size given to avoid silly warnings with Visual C++) */ + +#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] + +#define ERR_RETURN(strm,err) \ + return (strm->msg = (char*)ERR_MSG(err), (err)) +/* To be used only when the state is known to be valid */ + + /* common constants */ + +#ifndef DEF_WBITS +# define DEF_WBITS MAX_WBITS +#endif +/* default windowBits for decompression. MAX_WBITS is for compression only */ + +#if MAX_MEM_LEVEL >= 8 +# define DEF_MEM_LEVEL 8 +#else +# define DEF_MEM_LEVEL MAX_MEM_LEVEL +#endif +/* default memLevel */ + +#define STORED_BLOCK 0 +#define STATIC_TREES 1 +#define DYN_TREES 2 +/* The three kinds of block type */ + +#define MIN_MATCH 3 +#define MAX_MATCH 258 +/* The minimum and maximum match lengths */ + +#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ + + /* target dependencies */ + +#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) +# define OS_CODE 0x00 +# ifndef Z_SOLO +# if defined(__TURBOC__) || defined(__BORLANDC__) +# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) + /* Allow compilation with ANSI keywords only enabled */ + void _Cdecl farfree( void *block ); + void *_Cdecl farmalloc( unsigned long nbytes ); +# else +# include <alloc.h> +# endif +# else /* MSC or DJGPP */ +# include <malloc.h> +# endif +# endif +#endif + +#ifdef AMIGA +# define OS_CODE 0x01 +#endif + +#if defined(VAXC) || defined(VMS) +# define OS_CODE 0x02 +# define F_OPEN(name, mode) \ + fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") +#endif + +#if defined(ATARI) || defined(atarist) +# define OS_CODE 0x05 +#endif + +#ifdef OS2 +# define OS_CODE 0x06 +# if defined(M_I86) && !defined(Z_SOLO) +# include <malloc.h> +# endif +#endif + +#if defined(MACOS) || defined(TARGET_OS_MAC) +# define OS_CODE 0x07 +# ifndef Z_SOLO +# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os +# include <unix.h> /* for fdopen */ +# else +# ifndef fdopen +# define fdopen(fd,mode) NULL /* No fdopen() */ +# endif +# endif +# endif +#endif + +#ifdef TOPS20 +# define OS_CODE 0x0a +#endif + +#ifdef WIN32 +# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ +# define OS_CODE 0x0b +# endif +#endif + +#ifdef __50SERIES /* Prime/PRIMOS */ +# define OS_CODE 0x0f +#endif + +#if defined(_BEOS_) || defined(RISCOS) +# define fdopen(fd,mode) NULL /* No fdopen() */ +#endif + +#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX +# if defined(_WIN32_WCE) +# define fdopen(fd,mode) NULL /* No fdopen() */ +# ifndef _PTRDIFF_T_DEFINED + typedef int ptrdiff_t; +# define _PTRDIFF_T_DEFINED +# endif +# else +# define fdopen(fd,type) _fdopen(fd,type) +# endif +#endif + +#if defined(__BORLANDC__) && !defined(MSDOS) + #pragma warn -8004 + #pragma warn -8008 + #pragma warn -8066 +#endif + +/* provide prototypes for these when building zlib without LFS */ +#if !defined(_WIN32) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) + ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); + ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); +#endif + + /* common defaults */ + +#ifndef OS_CODE +# define OS_CODE 0x03 /* assume Unix */ +#endif + +#ifndef F_OPEN +# define F_OPEN(name, mode) fopen((name), (mode)) +#endif + + /* functions */ + +#if defined(pyr) || defined(Z_SOLO) +# define NO_MEMCPY +#endif +#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) + /* Use our own functions for small and medium model with MSC <= 5.0. + * You may have to use the same strategy for Borland C (untested). + * The __SC__ check is for Symantec. + */ +# define NO_MEMCPY +#endif +#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) +# define HAVE_MEMCPY +#endif +#ifdef HAVE_MEMCPY +# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ +# define zmemcpy _fmemcpy +# define zmemcmp _fmemcmp +# define zmemzero(dest, len) _fmemset(dest, 0, len) +# else +# define zmemcpy memcpy +# define zmemcmp memcmp +# define zmemzero(dest, len) memset(dest, 0, len) +# endif +#else + void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); + int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); + void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); +#endif + +/* Diagnostic functions */ +#ifdef DEBUG +# include <stdio.h> + extern int ZLIB_INTERNAL z_verbose; + extern void ZLIB_INTERNAL z_error OF((char *m)); +# define Assert(cond,msg) {if(!(cond)) z_error(msg);} +# define Trace(x) {if (z_verbose>=0) fprintf x ;} +# define Tracev(x) {if (z_verbose>0) fprintf x ;} +# define Tracevv(x) {if (z_verbose>1) fprintf x ;} +# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} +# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} +#else +# define Assert(cond,msg) +# define Trace(x) +# define Tracev(x) +# define Tracevv(x) +# define Tracec(c,x) +# define Tracecv(c,x) +#endif + +#ifndef Z_SOLO + voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, + unsigned size)); + void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); +#endif + +#define ZALLOC(strm, items, size) \ + (*((strm)->zalloc))((strm)->opaque, (items), (size)) +#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) +#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} + +#endif /* ZUTIL_H */ |