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wadfile.c
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1994-06-03
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#include "idbsp.h"
#include <ctype.h>
typedef struct
{
char identification[4]; /* should be IWAD */
int numlumps;
int infotableofs;
} wadinfo_t;
typedef struct
{
int filepos;
int size;
char name[8];
} lumpinfo_t;
/*
=============================================================================
*/
/*
============
=
= initFromFile:
=
============
*/
/* WADFILE *initFromFile(WADFILE *self,char const *path) */
void initFromFile(void)
{
wadinfo_t wad;
lumpinfo_t *lumps;
int i;
/*
self->pathname = malloc(strlen(path)+1);
strcpy (self->pathname, path);
self->dirty = false;
self->handle = open (self->pathname, O_RDWR, 0666);
if (self->handle== -1)
{
/* [self free]; */
/* return nil; */
/*
WadfileFree(self);
return NULL;
}
*/
/*
read in the header
*/
/* read (self->handle, &wad, sizeof(wad)); */
fread(&wad, sizeof(wad), 1, wad_i.handle);
if (strncmp(wad.identification,"PWAD",4))
{
/*
close (self->handle);
WadfileFree(self);
return NULL;
*/
Error("\ninitFromFile: specified WAD is not a PWAD");
}
/*
wad.numlumps = LONG (wad.numlumps);
wad.infotableofs = LONG (wad.infotableofs);
*/
/*
read in the lumpinfo
*/
/* lseek (self->handle, wad.infotableofs, SEEK_SET); */
fseek(wad_i.handle, wad.infotableofs, SEEK_SET);
/*
info = [[Storage alloc] initCount: wad.numlumps elementSize: sizeof(lumpinfo_t) description: ""];
lumps = [info elementAt: 0];
*/
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;
/* read (self->handle, lumps, wad.numlumps*sizeof(lumpinfo_t)); */
fread(lumps, sizeof(lumpinfo_t), wad.numlumps, wad_i.handle);
/*
for (i=0 ; i<wad.numlumps ; i++, lumps++)
{
lumps->filepos = LONG (lumps->filepos);
lumps->size = LONG (lumps->size);
}
*/
return;
}
/*
============
=
= initNew:
=
============
*/
void initNew(void)
{
wadinfo_t wad;
/*
self->pathname = malloc(strlen(path)+1);
strcpy (self->pathname, path);
*/
/* info = [[Storage alloc] initCount: 0 elementSize: sizeof(lumpinfo_t) description: ""]; */
wad_i.info = (STORAGE *)SafeMalloc(sizeof(STORAGE));
wad_i.info->data = (lumpinfo_t *)SafeMalloc(sizeof(lumpinfo_t));
wad_i.info->size = sizeof(lumpinfo_t);
wad_i.info->count = 0;
wad_i.dirty = true;
/*
self->handle = open (self->pathname, O_CREAT | O_TRUNC | O_RDWR, 0666);
if (self->handle== -1)
return NULL;
*/
/* leave space for wad header */
/* write (self->handle, &wad, sizeof(wad)); */
fwrite(&wad, sizeof(wad), 1, wad_i.handle);
return;
}
/* WADFILE *WadfileClose(WADFILE *self) */
void WadfileClose(void)
{
/* close (self->handle); */
fclose(wad_i.handle);
return;
}
/* void WadfileFree(WADFILE *self) */
void WadfileFree(void)
{
/*
close (handle);
[info free];
free (self->pathname);
return [super free];
*/
fclose(wad_i.handle);
free(wad_i.info->data);
free(wad_i.info);
free(wad_i.pathname);
}
/*
=============================================================================
*/
/* int numLumps(WADFILE *self) */
int numLumps(void)
{
/* return [info count]; */
return wad_i.info->count;
}
/* int lumpsize(WADFILE *self,int lump) */
int lumpsize(int lump)
{
lumpinfo_t *inf;
/*
inf = [info elementAt: lump];
return inf->size;
*/
inf = wad_i.info->data;
inf += lump;
return inf->size;
}
/* int lumpstart(WADFILE *self,int lump) */
int lumpstart(int lump)
{
lumpinfo_t *inf;
/*
inf = [info elementAt: lump];
return inf->filepos;
*/
inf = wad_i.info->data;
inf += lump;
return inf->filepos;
}
/* char const *lumpname(WADFILE *self,int lump) */
char const *lumpname(int lump)
{
lumpinfo_t *inf;
/*
inf = [info elementAt: lump];
return inf->name;
*/
inf = wad_i.info->data;
inf += lump;
return inf->name;
}
/*
================
=
= lumpNamed:
=
================
*/
/*int lumpNamed(WADFILE *self,char const *name) */
int lumpNamed(char const *name)
{
lumpinfo_t *inf;
int i, count;
char name8[9];
int v1,v2;
/* make the name into two integers for easy compares */
memset(name8,0,9);
if (strlen(name) < 9)
strncpy (name8,name,9);
for (i=0 ; i<9 ; i++)
name8[i] = toupper(name8[i]); /* case insensitive */
v1 = *(int *)name8;
v2 = *(int *)&name8[4];
/* scan backwards so patch lump files take precedence */
/* count = [info count]; */
count = wad_i.info->count;
for (i=count-1 ; i>=0 ; i--)
{
/* inf = [info elementAt: i]; */
inf = wad_i.info->data;
inf += i;
if ( *(int *)inf->name == v1 && *(int *)&inf->name[4] == v2)
return i;
}
return -1;
}
/*
================
=
= loadLump:
=
================
*/
/* void *loadLump(WADFILE *self,int lump) */
void *loadLump(int lump)
{
lumpinfo_t *inf;
byte *buf;
/*
inf = [info elementAt: lump];
buf = malloc (inf->size);
lseek (handle, inf->filepos, L_SET);
read (handle, buf, inf->size);
*/
inf = wad_i.info->data;
inf += lump;
buf = (byte *)malloc(inf->size);
/*
lseek(self->handle, inf->filepos, SEEK_SET);
read(self->handle, buf, inf->size);
*/
fseek(wad_i.handle, inf->filepos, SEEK_SET);
fread(buf, inf->size, 1, wad_i.handle);
return buf;
}
/* void *loadLumpNamed(WADFILE *self,char const *name)*/
void *loadLumpNamed(char const *name)
{
/* return [self loadLump:[self lumpNamed: name]]; */
return loadLump(lumpNamed(name));
}
/*
============================================================================
*/
/*
================
=
= addName:data:size:
=
================
*/
/* WADFILE *addName(WADFILE *self,char const *name, void *data, int size) */
void addName(char const *name, void *data, int size)
{
int i;
lumpinfo_t *newlump;
/*
if (wad_i.info->count > 0)
{
wad_i.info->count += 1;
wad_i.info->data = (lumpinfo_t *)realloc(wad_i.info->data,
(wad_i.info->count + 1) * sizeof(lumpinfo_t));
}
*/
newlump = (lumpinfo_t *)wad_i.info->data + wad_i.info->count;
wad_i.dirty = true;
memset (newlump->name,0,sizeof(newlump->name));
strncpy (newlump->name, name, 8);
for (i=0 ; i<8 ; i++)
newlump->name[i] = toupper(newlump->name[i]);
/* newlump->filepos = lseek(self->handle,0, L_XTND); */
/* newlump->filepos = lseek(self->handle,0,SEEK_END); */
fseek(wad_i.handle, 0, SEEK_END);
newlump->filepos = ftell(wad_i.handle);
newlump->size = size;
/* [info addElement: &new]; */
/* write (self->handle, data, size); */
fwrite(data, size, 1, wad_i.handle);
wad_i.info->count += 1;
wad_i.info->data = (lumpinfo_t *)realloc(wad_i.info->data,
(wad_i.info->count + 1) * sizeof(lumpinfo_t));
return;
}
/*
================
=
= writeDirectory:
=
char identification[4]; // should be IWAD
int numlumps;
int infotableofs;
================
*/
/* WADFILE *writeDirectory(WADFILE *self) */
void writeDirectory(void)
{
wadinfo_t wad;
int i,count;
lumpinfo_t *inf;
/*
write the directory
*/
/*
count = [info count];
inf = [info elementAt:0];
*/
count = wad_i.info->count;
inf = wad_i.info->data;
/*
for (i=0 ; i<count ; i++)
{
inf[i].filepos = LONG (inf[i].filepos);
inf[i].size = LONG (inf[i].size);
}
*/
/* wad.infotableofs = LONG (lseek(self->handle,0, L_XTND)); */
/* wad.infotableofs = LONG(lseek(self->handle,0,SEEK_END)); */
fseek(wad_i.handle,0,SEEK_END);
wad.infotableofs = ftell(wad_i.handle);
/* write (self->handle, inf, count*sizeof(lumpinfo_t)); */
fwrite(inf, sizeof(lumpinfo_t), count, wad_i.handle);
/*
for (i=0 ; i<count ; i++)
{
inf[i].filepos = LONG (inf[i].filepos);
inf[i].size = LONG (inf[i].size);
}
*/
/*
write the header
*/
strncpy (wad.identification, "PWAD",4);
/* wad.numlumps = LONG ([info count]); */
wad.numlumps = wad_i.info->count;
/*
lseek (self->handle, 0, SEEK_SET);
write (self->handle, &wad, sizeof(wad));
*/
fseek(wad_i.handle, 0, SEEK_SET);
fwrite(&wad, sizeof(wad), 1, wad_i.handle);
return;
}