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/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
#ifdef UNZIP_SUPPORT
#include <assert.h>
#include <ctype.h>
#ifdef SYSTEM_ZIP
#include <minizip/unzip.h>
#else
#include "unzip/unzip.h"
#endif
#include "snes9x.h"
#include "memmap.h"
bool8 LoadZip (const char *zipname, uint32 *TotalFileSize, uint8 *buffer)
{
*TotalFileSize = 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, or a file named program.rom
char filename[132];
uint32 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 (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 (len > 2 && name[len - 2] == '.' && name[len - 1] == '1')
{
strcpy(filename, name);
filesize = info.uncompressed_size;
break;
}
if (strncasecmp(name, "program.rom", 11) == 0)
{
strcpy(filename, name);
filesize = info.uncompressed_size;
break;
}
port = unzGoToNextFile(file);
}
int len = strlen(zipname);
if (!(port == UNZ_END_OF_LIST_OF_FILE || port == UNZ_OK) || filesize == 0 ||
(len > 5 && strcasecmp(zipname + len - 5, ".msu1") == 0 && strcasecmp(filename, "program.rom") != 0))
{
if (unzClose(file) != UNZ_OK)
assert(FALSE);
return (FALSE);
}
// find extension
char tmp[2] = { 0, 0 };
char *ext = strrchr(filename, '.');
if (ext)
ext++;
else
ext = tmp;
uint8 *ptr = buffer;
bool8 more = FALSE;
unzLocateFile(file, filename, 0);
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);
uint32 FileSize = info.uncompressed_size;
int l = unzReadCurrentFile(file, ptr, FileSize);
if (unzCloseCurrentFile(file) == UNZ_CRCERROR)
{
unzClose(file);
return (FALSE);
}
if (l <= 0 || l != (int) FileSize)
{
unzClose(file);
return (FALSE);
}
FileSize = Memory.HeaderRemove(FileSize, ptr);
ptr += FileSize;
*TotalFileSize += FileSize;
int len;
if (ptr - Memory.ROM < CMemory::MAX_ROM_SIZE + 512 && (isdigit(ext[0]) && ext[1] == 0 && ext[0] < '9'))
{
more = TRUE;
ext[0]++;
}
else
if (ptr - Memory.ROM < CMemory::MAX_ROM_SIZE + 512)
{
if (ext == tmp)
len = strlen(filename);
else
len = ext - filename - 1;
if ((len == 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, 0) != 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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