From d40ae99422e118188a7f48055dc340c6aca022aa Mon Sep 17 00:00:00 2001 From: Kitty Draper Date: Sat, 5 Mar 2011 21:39:25 -0500 Subject: first commit --- source/loadzip.cpp | 267 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 267 insertions(+) create mode 100644 source/loadzip.cpp (limited to 'source/loadzip.cpp') diff --git a/source/loadzip.cpp b/source/loadzip.cpp new file mode 100644 index 0000000..4ee3bcb --- /dev/null +++ b/source/loadzip.cpp @@ -0,0 +1,267 @@ +/******************************************************************************* + Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. + + (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and + Jerremy Koot (jkoot@snes9x.com) + + (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net) + + (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net), + funkyass (funkyass@spam.shaw.ca), + Joel Yliluoma (http://iki.fi/bisqwit/) + Kris Bleakley (codeviolation@hotmail.com), + Matthew Kendora, + Nach (n-a-c-h@users.sourceforge.net), + Peter Bortas (peter@bortas.org) and + zones (kasumitokoduck@yahoo.com) + + C4 x86 assembler and some C emulation code + (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com), + _Demo_ (_demo_@zsnes.com), and Nach + + C4 C++ code + (c) Copyright 2003 Brad Jorsch + + DSP-1 emulator code + (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson, + John Weidman, neviksti (neviksti@hotmail.com), + Kris Bleakley, Andreas Naive + + DSP-2 emulator code + (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and + Lord Nightmare (lord_nightmare@users.sourceforge.net + + OBC1 emulator code + (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and + Kris Bleakley + Ported from x86 assembler to C by sanmaiwashi + + SPC7110 and RTC C++ emulator code + (c) Copyright 2002 Matthew Kendora with research by + zsKnight, John Weidman, and Dark Force + + S-DD1 C emulator code + (c) Copyright 2003 Brad Jorsch with research by + Andreas Naive and John Weidman + + S-RTC C emulator code + (c) Copyright 2001 John Weidman + + ST010 C++ emulator code + (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora + + Super FX x86 assembler emulator code + (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault + + Super FX C emulator code + (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman + + + SH assembler code partly based on x86 assembler code + (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se) + + + Specific ports 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. +*******************************************************************************/ + +#ifdef UNZIP_SUPPORT +/**********************************************************************************************/ +/* Loadzip.CPP */ +/* This file contains a function for loading a SNES ROM image from a zip file */ +/**********************************************************************************************/ + +#include +#ifdef HAVE_STRINGS_H +#include +#endif +#include + +#ifndef NO_INLINE_SET_GET +#define NO_INLINE_SET_GET +#endif + +#include "snes9x.h" +#include "memmap.h" + +#include "unzip.h" +#include +#include + +bool8 LoadZip(const char* zipname, + int32 *TotalFileSize, + int32 *headers, uint8* buffer) +{ + *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); + + 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; + } + + 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) + { +// assert( unzClose(file) == UNZ_OK ); + return (FALSE); + } + + // Find extension + char tmp[2]; + tmp[0] = tmp[1] = 0; + char *ext = strrchr(filename,'.'); + if(ext) ext++; + else ext = tmp; + + uint8 *ptr = buffer; + 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