From 6fb0c7a7a53e1eba7a0f5dc5b1ade312a0d76119 Mon Sep 17 00:00:00 2001 From: Toad King Date: Thu, 14 Jun 2012 03:21:06 -0400 Subject: initial pocketsnes commit --- src/loadzip.cpp | 220 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 src/loadzip.cpp (limited to 'src/loadzip.cpp') diff --git a/src/loadzip.cpp b/src/loadzip.cpp new file mode 100644 index 0000000..1bbcaac --- /dev/null +++ b/src/loadzip.cpp @@ -0,0 +1,220 @@ +/* + * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. + * + * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and + * Jerremy Koot (jkoot@snes9x.com) + * + * Super FX C emulator code + * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and + * Gary Henderson. + * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_. + * + * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson. + * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_. + * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com). + * + * DOS port code contains the works of other authors. See headers in + * individual files. + * + * Snes9x homepage: http://www.snes9x.com + * + * Permission to use, copy, modify and distribute Snes9x in both binary and + * source form, for non-commercial purposes, is hereby granted without fee, + * providing that this license information and copyright notice appear with + * all copies and any derived work. + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event shall the authors be held liable for any damages + * arising from the use of this software. + * + * Snes9x is freeware for PERSONAL USE only. Commercial users should + * seek permission of the copyright holders first. Commercial use includes + * charging money for Snes9x or software derived from Snes9x. + * + * The copyright holders request that bug fixes and improvements to the code + * should be forwarded to them so everyone can benefit from the modifications + * in future versions. + * + * Super NES and Super Nintendo Entertainment System are trademarks of + * Nintendo Co., Limited and its subsidiary companies. + */ + +#include "port.h" + +#ifdef UNZIP_SUPPORT +/**********************************************************************************************/ +/* Loadzip.CPP */ +/* This file contains a function for loading a SNES ROM image from a zip file */ +/**********************************************************************************************/ + +#include +#include + +#ifndef NO_INLINE_SET_GET +#define NO_INLINE_SET_GET +#endif + +#include "snes9x.h" +#include "memmap.h" + +#include "unzip.h" +//#include +#include +#include + +bool8 LoadZip(const char* zipname, + int32 *TotalFileSize, + int32 *headers) +{ + *TotalFileSize = 0; + *headers = 0; + + unzFile file = unzOpen(zipname); + if(file == NULL) + return (FALSE); + + // find largest file in zip file (under MAX_ROM_SIZE) + // or a file with extension .1 + char filename[132]; + int filesize = 0; + int port = unzGoToFirstFile(file); + unz_file_info info; + while(port == UNZ_OK) + { + char name[132]; + unzGetCurrentFileInfo(file, &info, name,128, NULL,0, NULL,0); + +#if 0 + int calc_size = info.uncompressed_size / 0x2000; + calc_size *= 0x2000; + if(!(info.uncompressed_size - calc_size == 512 || info.uncompressed_size == calc_size)) + { + port = unzGoToNextFile(file); + continue; + } +#endif + + if(info.uncompressed_size > (CMemory::MAX_ROM_SIZE + 512)) + { + port = unzGoToNextFile(file); + continue; + } + + if ((int) info.uncompressed_size > filesize) + { + strcpy(filename,name); + filesize = info.uncompressed_size; + } + int len = strlen(name); + if(name[len-2] == '.' && name[len-1] == '1') + { + strcpy(filename,name); + filesize = info.uncompressed_size; + break; + } + port = unzGoToNextFile(file); + } + if( !(port == UNZ_END_OF_LIST_OF_FILE || port == UNZ_OK) || filesize == 0) + { + unzClose(file); + return (FALSE); + } + + // Find extension + char tmp[2]; + tmp[0] = tmp[1] = 0; + char *ext = strrchr(filename,'.'); + if(ext) ext++; + else ext = tmp; + + uint8 *ptr = Memory.ROM; + bool8 more = FALSE; + + unzLocateFile(file,filename,1); + unzGetCurrentFileInfo(file, &info, filename,128, NULL,0, NULL,0); + + if( unzOpenCurrentFile(file) != UNZ_OK ) + { + unzClose(file); + return (FALSE); + } + + do + { +// assert(info.uncompressed_size <= CMemory::MAX_ROM_SIZE + 512); + int FileSize = info.uncompressed_size; + + int calc_size = FileSize / 0x2000; + calc_size *= 0x2000; + + int l = unzReadCurrentFile(file,ptr,FileSize); + if(unzCloseCurrentFile(file) == UNZ_CRCERROR) + { + unzClose(file); + return (FALSE); + } + + if(l <= 0 || l != FileSize) + { + unzClose(file); + switch(l) + { + case UNZ_ERRNO: + break; + case UNZ_EOF: + break; + case UNZ_PARAMERROR: + break; + case UNZ_BADZIPFILE: + break; + case UNZ_INTERNALERROR: + break; + case UNZ_CRCERROR: + break; + } + return (FALSE); + } + + if ((FileSize - calc_size == 512 && !Settings.ForceNoHeader) || + Settings.ForceHeader) + { + memmove (ptr, ptr + 512, calc_size); + (*headers)++; + FileSize -= 512; + } + ptr += FileSize; + (*TotalFileSize) += FileSize; + + int len; + if (ptr - Memory.ROM < CMemory::MAX_ROM_SIZE + 0x200 && + (isdigit (ext [0]) && ext [1] == 0 && ext [0] < '9')) + { + more = TRUE; + ext [0]++; + } + else if (ptr - Memory.ROM < CMemory::MAX_ROM_SIZE + 0x200 && + (((len = strlen (filename)) == 7 || len == 8) && + strncasecmp (filename, "sf", 2) == 0 && + isdigit (filename [2]) && isdigit (filename [3]) && isdigit (filename [4]) && + isdigit (filename [5]) && isalpha (filename [len - 1]))) + { + more = TRUE; + filename [len - 1]++; + } + else + more = FALSE; + + if(more) + { + if( unzLocateFile(file,filename,1) != UNZ_OK || + unzGetCurrentFileInfo(file, &info, filename,128, NULL,0, NULL,0) != UNZ_OK || + unzOpenCurrentFile(file) != UNZ_OK) + break; + } + + } while(more); + + unzClose(file); + return (TRUE); +} +#endif -- cgit v1.2.3