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/*
* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
*
* (c) Copyright 1996, 1997, 1998, 1999 Gary Henderson (gary@daniver.demon.co.uk) and
* Jerremy Koot (jkoot@snes9x.com)
*
* Super FX C emulator code
* (c) Copyright 1997, 1998, 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.
* DOS port code contains the works of other authors. See headers in
* individual files.
*
* Snes9x homepage: 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 <string.h>
#include <ctype.h>
#ifndef NO_INLINE_SET_GET
#define NO_INLINE_SET_GET
#endif
#include "snes9x.h"
#include "memmap.h"
#include "unzip.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
bool8 LoadZip(const char* zipname,
unsigned long *TotalFileSize,
int *headers)
{
*TotalFileSize = 0;
*headers = 0;
unzFile file = unzOpen(zipname);
if(file == NULL)
return (FALSE);
printf("Reading zipfile: %s\n",zipname);
// 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);
//printf("zipfile: %s size: %d\n",name,info.uncompressed_size);
#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(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 = 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);
printf("Error in zip file\n");
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;
printf("Unzipping %s\n",filename);
int l = unzReadCurrentFile(file,ptr,FileSize);
if(unzCloseCurrentFile(file) == UNZ_CRCERROR)
{
unzClose(file);
printf("CRC error in zip file.\n");
return (FALSE);
}
if(l <= 0 || l != FileSize)
{
unzClose(file);
printf("Error in zip file.\n",l);
switch(l)
{
case UNZ_ERRNO:
printf("Errno:...\n");
break;
case UNZ_EOF:
printf("Unexpected end of file.\n");
break;
case UNZ_PARAMERROR:
printf("Parameter error.\n");
break;
case UNZ_BADZIPFILE:
printf("Bad zipfile.\n");
break;
case UNZ_INTERNALERROR:
printf("Internal error.\n");
break;
case UNZ_CRCERROR:
printf("CRC error.\n");
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
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