/*
============
=
= initFromFile:
=
============
*/
void initFromFile(void)
{
wadinfo_t wad;
lumpinfo_t *lumps;
int i;
/* read in the header */
fread(&wad, sizeof(wad), 1, wad_i.handle);
if (strncmp(wad.identification, "PWAD", 4))
{
Error("initFromFile: specified WAD is not a PWAD");
}
/* read in the lumpinfo */
fseek(wad_i.handle, wad.infotableofs, SEEK_SET);
wad_i.info = (STORAGE *) SafeMalloc(sizeof(STORAGE));
wad_i.info->data = (lumpinfo_t *) SafeCalloc(wad.numlumps,
sizeof(lumpinfo_t));
wad_i.info->count = wad.numlumps;
wad_i.info->size = sizeof(lumpinfo_t);
lumps = wad_i.info->data;
fread(lumps, sizeof(lumpinfo_t), wad.numlumps, wad_i.handle);
for (i = 0; i < wad.numlumps; i++, lumps++)
{
lumps->filepos = bswapl(lumps->filepos);
lumps->size = bswapl(lumps->size);
}
return;
}
int main ( void )
{
#if defined(__x86_64__)
printf("0x%llx\n", bswapq( 0x8877665544332211ULL ));
#endif
printf("0x%x\n", bswapl( 0x44332211ULL ));
return 0;
}
/*
================
=
= writeDirectory:
=
char identification[4]; // should be IWAD
int numlumps;
int infotableofs;
================
*/
void writeDirectory(void)
{
wadinfo_t wad;
int i;
int count;
lumpinfo_t *inf;
/* write the directory */
count = wad_i.info->count;
inf = wad_i.info->data;
for (i = 0; i < count; i++)
{
inf[i].filepos = bswapl(inf[i].filepos);
inf[i].size = bswapl(inf[i].size);
}
fseek(wad_i.handle, 0, SEEK_END);
wad.infotableofs = ftell(wad_i.handle);
wad.infotableofs = bswapl(wad.infotableofs);
fwrite(inf, sizeof(lumpinfo_t), count, wad_i.handle);
for (i = 0; i < count; i++)
{
inf[i].filepos = bswapl(inf[i].filepos);
inf[i].size = bswapl(inf[i].size);
}
/* write the header */
strncpy(wad.identification, "PWAD", 4);
wad.numlumps = bswapl(wad_i.info->count);
fseek(wad_i.handle, 0, SEEK_SET);
fwrite(&wad, sizeof(wad), 1, wad_i.handle);
return;
}
