// nearly same as PicoCartLoad, but works with zipfiles
int CartLoadZip(const char *fname, unsigned char **prom, unsigned int *psize)
{
unsigned char *rom=0;
struct zipent* zipentry;
int size;
ZIP *zipfile = openzip(fname);
if(!zipfile) return 1;
// find first bin or smd
while((zipentry = readzip(zipfile)) != 0)
{
char *ext;
if(strlen(zipentry->name) < 5) continue;
ext = zipentry->name+strlen(zipentry->name)-4;
if(!strcasecmp(ext, ".bin") || !strcasecmp(ext, ".smd") || !strcasecmp(ext, ".gen")) break;
}
if(!zipentry) {
closezip(zipfile);
return 4; // no roms
}
size = zipentry->uncompressed_size;
size=(size+3)&~3; // Round up to a multiple of 4
// Allocate space for the rom plus padding
rom=PicoCartAlloc(size);
if (rom==NULL) { closezip(zipfile); return 2; }
if(readuncompresszip(zipfile, zipentry, (char *)rom) != 0) {
free(rom);
rom = 0;
closezip(zipfile);
return 5; // unzip failed
}
closezip(zipfile);
// Check for SMD:
if ((size&0x3fff)==0x200) { DecodeSmd(rom,size); size-=0x200; } // Decode and byteswap SMD
else Byteswap(rom,size); // Just byteswap
if (prom) *prom=rom;
if (psize) *psize=size;
return 0;
}
/* Pass the path to the zipfile and the name of the file within the zipfile.
buf will be set to point to the uncompressed image of that zipped file.
length will be set to the length of the uncompressed data. */
int /* error */ load_zipped_file (int pathtype, int pathindex, const char* zipfile, const char* filename, unsigned char** buf, unsigned int* length) {
ZIP* zip;
struct zipent* ent;
zip = cache_openzip(pathtype, pathindex, zipfile);
if (!zip)
return -1;
while (readzip(zip)) {
/* NS981003: support for "load by CRC" */
char crc[9];
ent = &(zip->ent);
sprintf(crc,"%08x",ent->crc32);
if (equal_filename(ent->name, filename) ||
(ent->crc32 && !strcmp(crc, filename)))
{
*length = ent->uncompressed_size;
*buf = (unsigned char*)malloc( *length );
if (!*buf) {
if (!gUnzipQuiet)
printf("load_zipped_file(): Unable to allocate %d bytes of RAM\n",*length);
cache_closezip(zip);
return -1;
}
if (readuncompresszip(zip, ent, (char*)*buf)!=0) {
free(*buf);
cache_closezip(zip);
return -1;
}
cache_suspendzip(zip);
return 0;
}
}
cache_suspendzip(zip);
return -1;
}