Moved StdioStream to its own files inside backends

svn-id: r34303

1 files changed, 193 insertions, 0 deletions

diff --git a/backends/fs/stdiostream.cpp b/backends/fs/stdiostream.cpp
new file mode 100644
index 0000000000..8fde1b1eb8
--- /dev/null
+++ b/backends/fs/stdiostream.cpp
@@ -0,0 +1,193 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#include "backends/fs/stdiostream.h"
+
+#include <errno.h>
+
+#if defined(MACOSX) || defined(IPHONE)
+#include "CoreFoundation/CoreFoundation.h"
+#endif
+
+
+#ifdef __PLAYSTATION2__
+	// for those replaced fopen/fread/etc functions
+	typedef unsigned long	uint64;
+	typedef signed long	int64;
+	#include "backends/platform/ps2/fileio.h"
+
+	#define fopen(a, b)			ps2_fopen(a, b)
+	#define fclose(a)			ps2_fclose(a)
+	#define fseek(a, b, c)			ps2_fseek(a, b, c)
+	#define ftell(a)			ps2_ftell(a)
+	#define feof(a)				ps2_feof(a)
+	#define fread(a, b, c, d)		ps2_fread(a, b, c, d)
+	#define fwrite(a, b, c, d)		ps2_fwrite(a, b, c, d)
+
+	//#define fprintf				ps2_fprintf	// used in common/util.cpp
+	//#define fflush(a)			ps2_fflush(a)	// used in common/util.cpp
+
+	//#define fgetc(a)			ps2_fgetc(a)	// not used
+	//#define fgets(a, b, c)			ps2_fgets(a, b, c)	// not used
+	//#define fputc(a, b)			ps2_fputc(a, b)	// not used
+	//#define fputs(a, b)			ps2_fputs(a, b)	// not used
+
+	//#define fsize(a)			ps2_fsize(a)	// not used -- and it is not a standard function either
+#endif
+
+#ifdef __DS__
+
+	// These functions replease the standard library functions of the same name.
+	// As this header is included after the standard one, I have the chance to #define
+	// all of these to my own code.
+	//
+	// A #define is the only way, as redefinig the functions would cause linker errors.
+
+	// These functions need to be #undef'ed, as their original definition
+	// in devkitarm is done with #includes (ugh!)
+	#undef feof
+	#undef clearerr
+	//#undef getc
+	//#undef ferror
+
+	#include "backends/fs/ds/ds-fs.h"
+
+
+	//void	std_fprintf(FILE* handle, const char* fmt, ...);	// used in common/util.cpp
+	//void	std_fflush(FILE* handle);	// used in common/util.cpp
+
+	//char*	std_fgets(char* str, int size, FILE* file);	// not used
+	//int	std_getc(FILE* handle);	// not used
+	//char*	std_getcwd(char* dir, int dunno);	// not used
+	//void	std_cwd(char* dir);	// not used
+	//int	std_ferror(FILE* handle);	// not used
+
+	// Only functions used in the ScummVM source have been defined here!
+	#define fopen(name, mode)					DS::std_fopen(name, mode)
+	#define fclose(handle)						DS::std_fclose(handle)
+	#define fread(ptr, size, items, file)		DS::std_fread(ptr, size, items, file)
+	#define fwrite(ptr, size, items, file)		DS::std_fwrite(ptr, size, items, file)
+	#define feof(handle)						DS::std_feof(handle)
+	#define ftell(handle)						DS::std_ftell(handle)
+	#define fseek(handle, offset, whence)		DS::std_fseek(handle, offset, whence)
+	#define clearerr(handle)					DS::std_clearerr(handle)
+
+	//#define printf(fmt, ...)					consolePrintf(fmt, ##__VA_ARGS__)
+
+	//#define fprintf(file, fmt, ...)				{ char str[128]; sprintf(str, fmt, ##__VA_ARGS__); DS::std_fwrite(str, strlen(str), 1, file); }
+	//#define fflush(file)						DS::std_fflush(file)	// used in common/util.cpp
+
+	//#define fgets(str, size, file)				DS::std_fgets(str, size, file)	// not used
+	//#define getc(handle)						DS::std_getc(handle)	// not used
+	//#define getcwd(dir, dunno)					DS::std_getcwd(dir, dunno)	// not used
+	#define ferror(handle)						DS::std_ferror(handle)
+
+#endif
+
+#ifdef __SYMBIAN32__
+	#undef feof
+	#undef clearerr
+
+	#define FILE void
+
+	FILE*	symbian_fopen(const char* name, const char* mode);
+	void	symbian_fclose(FILE* handle);
+	size_t	symbian_fread(const void* ptr, size_t size, size_t numItems, FILE* handle);
+	size_t	symbian_fwrite(const void* ptr, size_t size, size_t numItems, FILE* handle);
+	bool	symbian_feof(FILE* handle);
+	long int symbian_ftell(FILE* handle);
+	int		symbian_fseek(FILE* handle, long int offset, int whence);
+	void	symbian_clearerr(FILE* handle);
+
+	// Only functions used in the ScummVM source have been defined here!
+	#define fopen(name, mode)					symbian_fopen(name, mode)
+	#define fclose(handle)						symbian_fclose(handle)
+	#define fread(ptr, size, items, file)		symbian_fread(ptr, size, items, file)
+	#define fwrite(ptr, size, items, file)		symbian_fwrite(ptr, size, items, file)
+	#define feof(handle)						symbian_feof(handle)
+	#define ftell(handle)						symbian_ftell(handle)
+	#define fseek(handle, offset, whence)		symbian_fseek(handle, offset, whence)
+	#define clearerr(handle)					symbian_clearerr(handle)
+#endif
+
+
+StdioStream::StdioStream(void *handle) : _handle(handle) {
+	assert(handle);
+}
+
+StdioStream::~StdioStream() {
+	fclose((FILE *)_handle);
+}
+
+bool StdioStream::ioFailed() const {
+	return ferror((FILE *)_handle) != 0;
+}
+
+void StdioStream::clearIOFailed() {
+	clearerr((FILE *)_handle);
+}
+
+bool StdioStream::eos() const {
+	return feof((FILE *)_handle) != 0;
+}
+
+uint32 StdioStream::pos() const {
+	// FIXME: ftell can return -1 to indicate an error (in which case errno gets set)
+	//        Maybe we should support that, too?
+	return ftell((FILE *)_handle);
+}
+
+uint32 StdioStream::size() const {
+	uint32 oldPos = ftell((FILE *)_handle);
+	fseek((FILE *)_handle, 0, SEEK_END);
+	uint32 length = ftell((FILE *)_handle);
+	fseek((FILE *)_handle, oldPos, SEEK_SET);
+
+	return length;
+}
+
+void StdioStream::seek(int32 offs, int whence) {
+	assert(_handle);
+
+	if (fseek((FILE *)_handle, offs, whence) != 0)
+		clearerr((FILE *)_handle);	// FIXME: why do we call clearerr here?
+		
+	// FIXME: fseek has a return value to indicate errors; 
+	//        Maybe we should support that, too?
+}
+
+uint32 StdioStream::read(void *ptr, uint32 len) {
+	return (uint32)fread((byte *)ptr, 1, len, (FILE *)_handle);
+}
+
+uint32 StdioStream::write(const void *ptr, uint32 len) {
+	return (uint32)fwrite(ptr, 1, len, (FILE *)_handle);
+}
+
+void StdioStream::flush() {
+	// TODO: Should check the return value of fflush, and if it is non-zero,
+	// check errno and set an error flag.
+	fflush((FILE *)_handle);
+}