ref: 126138bb063f3409702a35c29ef8113f3f722eaa
dir: /src/hexen/w_wad.c/
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 1993-2008 Raven Software
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
//-----------------------------------------------------------------------------
// HEADER FILES ------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <fcntl.h>
#include "h2def.h"
// MACROS ------------------------------------------------------------------
#ifndef O_BINARY
#define O_BINARY 0
#endif
// TYPES -------------------------------------------------------------------
typedef struct
{
char identification[4];
int numlumps;
int infotableofs;
} wadinfo_t;
typedef struct
{
int filepos;
int size;
char name[8];
} filelump_t;
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
// PUBLIC DATA DEFINITIONS -------------------------------------------------
lumpinfo_t *lumpinfo;
int numlumps;
void **lumpcache;
// PRIVATE DATA DEFINITIONS ------------------------------------------------
static lumpinfo_t *PrimaryLumpInfo;
static int PrimaryNumLumps;
static void **PrimaryLumpCache;
static lumpinfo_t *AuxiliaryLumpInfo;
static int AuxiliaryNumLumps;
static void **AuxiliaryLumpCache;
static int AuxiliaryHandle = 0;
boolean AuxiliaryOpened = false;
// CODE --------------------------------------------------------------------
#ifdef NeXT
//==========================================================================
//
// strupr
//
//==========================================================================
void strupr(char *s)
{
while (*s)
*s++ = toupper(*s);
}
//==========================================================================
//
// filelength
//
//==========================================================================
int filelength(int handle)
{
struct stat fileinfo;
if (fstat(handle, &fileinfo) == -1)
{
I_Error("Error fstating");
}
return fileinfo.st_size;
}
#endif
//==========================================================================
//
// W_AddFile
//
// Files with a .wad extension are wadlink files with multiple lumps,
// other files are single lumps with the base filename for the lump name.
//
//==========================================================================
void W_AddFile(char *filename)
{
wadinfo_t header;
lumpinfo_t *lump_p;
unsigned i;
int handle, length;
int startlump;
filelump_t *fileinfo, singleinfo;
filelump_t *freeFileInfo;
if ((handle = open(filename, O_RDONLY | O_BINARY)) == -1)
{ // Didn't find file
return;
}
startlump = numlumps;
if (strcmpi(filename + strlen(filename) - 3, "wad"))
{ // Single lump file
fileinfo = &singleinfo;
freeFileInfo = NULL;
singleinfo.filepos = 0;
singleinfo.size = LONG(filelength(handle));
M_ExtractFileBase(filename, singleinfo.name);
numlumps++;
}
else
{ // WAD file
read(handle, &header, sizeof(header));
if (strncmp(header.identification, "IWAD", 4))
{
if (strncmp(header.identification, "PWAD", 4))
{ // Bad file id
I_Error("Wad file %s doesn't have IWAD or PWAD id\n",
filename);
}
}
header.numlumps = LONG(header.numlumps);
header.infotableofs = LONG(header.infotableofs);
length = header.numlumps * sizeof(filelump_t);
// fileinfo = alloca(length);
if (!(fileinfo = malloc(length)))
{
I_Error("W_AddFile: fileinfo malloc failed\n");
}
freeFileInfo = fileinfo;
lseek(handle, header.infotableofs, SEEK_SET);
read(handle, fileinfo, length);
numlumps += header.numlumps;
}
// Fill in lumpinfo
lumpinfo = realloc(lumpinfo, numlumps * sizeof(lumpinfo_t));
if (!lumpinfo)
{
I_Error("Couldn't realloc lumpinfo");
}
lump_p = &lumpinfo[startlump];
for (i = startlump; i < numlumps; i++, lump_p++, fileinfo++)
{
lump_p->handle = handle;
lump_p->position = LONG(fileinfo->filepos);
lump_p->size = LONG(fileinfo->size);
strncpy(lump_p->name, fileinfo->name, 8);
}
if (freeFileInfo)
{
free(freeFileInfo);
}
}
//==========================================================================
//
// W_InitMultipleFiles
//
// Pass a null terminated list of files to use. All files are optional,
// but at least one file must be found. Lump names can appear multiple
// times. The name searcher looks backwards, so a later file can
// override an earlier one.
//
//==========================================================================
void W_InitMultipleFiles(char **filenames)
{
int size;
// Open all the files, load headers, and count lumps
numlumps = 0;
lumpinfo = malloc(1); // Will be realloced as lumps are added
for (; *filenames; filenames++)
{
W_AddFile(*filenames);
}
if (!numlumps)
{
I_Error("W_InitMultipleFiles: no files found");
}
// Set up caching
size = numlumps * sizeof(*lumpcache);
lumpcache = malloc(size);
if (!lumpcache)
{
I_Error("Couldn't allocate lumpcache");
}
memset(lumpcache, 0, size);
PrimaryLumpInfo = lumpinfo;
PrimaryLumpCache = lumpcache;
PrimaryNumLumps = numlumps;
}
//==========================================================================
//
// W_InitFile
//
// Initialize the primary from a single file.
//
//==========================================================================
void W_InitFile(char *filename)
{
char *names[2];
names[0] = filename;
names[1] = NULL;
W_InitMultipleFiles(names);
}
//==========================================================================
//
// W_OpenAuxiliary
//
//==========================================================================
void W_OpenAuxiliary(char *filename)
{
int i;
int size;
wadinfo_t header;
int handle;
int length;
filelump_t *fileinfo;
filelump_t *sourceLump;
lumpinfo_t *destLump;
if (AuxiliaryOpened)
{
W_CloseAuxiliary();
}
if ((handle = open(filename, O_RDONLY | O_BINARY)) == -1)
{
I_Error("W_OpenAuxiliary: %s not found.", filename);
return;
}
AuxiliaryHandle = handle;
read(handle, &header, sizeof(header));
if (strncmp(header.identification, "IWAD", 4))
{
if (strncmp(header.identification, "PWAD", 4))
{ // Bad file id
I_Error("Wad file %s doesn't have IWAD or PWAD id\n", filename);
}
}
header.numlumps = LONG(header.numlumps);
header.infotableofs = LONG(header.infotableofs);
length = header.numlumps * sizeof(filelump_t);
fileinfo = Z_Malloc(length, PU_STATIC, 0);
lseek(handle, header.infotableofs, SEEK_SET);
read(handle, fileinfo, length);
numlumps = header.numlumps;
// Init the auxiliary lumpinfo array
lumpinfo = Z_Malloc(numlumps * sizeof(lumpinfo_t), PU_STATIC, 0);
sourceLump = fileinfo;
destLump = lumpinfo;
for (i = 0; i < numlumps; i++, destLump++, sourceLump++)
{
destLump->handle = handle;
destLump->position = LONG(sourceLump->filepos);
destLump->size = LONG(sourceLump->size);
strncpy(destLump->name, sourceLump->name, 8);
}
Z_Free(fileinfo);
// Allocate the auxiliary lumpcache array
size = numlumps * sizeof(*lumpcache);
lumpcache = Z_Malloc(size, PU_STATIC, 0);
memset(lumpcache, 0, size);
AuxiliaryLumpInfo = lumpinfo;
AuxiliaryLumpCache = lumpcache;
AuxiliaryNumLumps = numlumps;
AuxiliaryOpened = true;
}
//==========================================================================
//
// W_CloseAuxiliary
//
//==========================================================================
void W_CloseAuxiliary(void)
{
int i;
if (AuxiliaryOpened)
{
W_UseAuxiliary();
for (i = 0; i < numlumps; i++)
{
if (lumpcache[i])
{
Z_Free(lumpcache[i]);
}
}
Z_Free(AuxiliaryLumpInfo);
Z_Free(AuxiliaryLumpCache);
W_CloseAuxiliaryFile();
AuxiliaryOpened = false;
}
W_UsePrimary();
}
//==========================================================================
//
// W_CloseAuxiliaryFile
//
// WARNING: W_CloseAuxiliary() must be called before any further
// auxiliary lump processing.
//
//==========================================================================
void W_CloseAuxiliaryFile(void)
{
if (AuxiliaryHandle)
{
close(AuxiliaryHandle);
AuxiliaryHandle = 0;
}
}
//==========================================================================
//
// W_UsePrimary
//
//==========================================================================
void W_UsePrimary(void)
{
lumpinfo = PrimaryLumpInfo;
numlumps = PrimaryNumLumps;
lumpcache = PrimaryLumpCache;
}
//==========================================================================
//
// W_UseAuxiliary
//
//==========================================================================
void W_UseAuxiliary(void)
{
if (AuxiliaryOpened == false)
{
I_Error("W_UseAuxiliary: WAD not opened.");
}
lumpinfo = AuxiliaryLumpInfo;
numlumps = AuxiliaryNumLumps;
lumpcache = AuxiliaryLumpCache;
}
//==========================================================================
//
// W_NumLumps
//
//==========================================================================
int W_NumLumps(void)
{
return numlumps;
}
//==========================================================================
//
// W_CheckNumForName
//
// Returns -1 if name not found.
//
//==========================================================================
int W_CheckNumForName(char *name)
{
char name8[9];
int v1, v2;
lumpinfo_t *lump_p;
// Make the name into two integers for easy compares
strncpy(name8, name, 8);
name8[8] = 0; // in case the name was a full 8 chars
strupr(name8); // case insensitive
v1 = *(int *) name8;
v2 = *(int *) &name8[4];
// Scan backwards so patch lump files take precedence
lump_p = lumpinfo + numlumps;
while (lump_p-- != lumpinfo)
{
if (*(int *) lump_p->name == v1 && *(int *) &lump_p->name[4] == v2)
{
return lump_p - lumpinfo;
}
}
return -1;
}
//==========================================================================
//
// W_GetNumForName
//
// Calls W_CheckNumForName, but bombs out if not found.
//
//==========================================================================
int W_GetNumForName(char *name)
{
int i;
i = W_CheckNumForName(name);
if (i != -1)
{
return i;
}
I_Error("W_GetNumForName: %s not found!", name);
return -1;
}
//==========================================================================
//
// W_LumpLength
//
// Returns the buffer size needed to load the given lump.
//
//==========================================================================
int W_LumpLength(int lump)
{
if (lump >= numlumps)
{
I_Error("W_LumpLength: %i >= numlumps", lump);
}
return lumpinfo[lump].size;
}
//==========================================================================
//
// W_ReadLump
//
// Loads the lump into the given buffer, which must be >= W_LumpLength().
//
//==========================================================================
void W_ReadLump(int lump, void *dest)
{
int c;
lumpinfo_t *l;
if (lump >= numlumps)
{
I_Error("W_ReadLump: %i >= numlumps", lump);
}
l = lumpinfo + lump;
//I_BeginRead();
lseek(l->handle, l->position, SEEK_SET);
c = read(l->handle, dest, l->size);
if (c < l->size)
{
I_Error("W_ReadLump: only read %i of %i on lump %i",
c, l->size, lump);
}
//I_EndRead();
}
//==========================================================================
//
// W_CacheLumpNum
//
//==========================================================================
void *W_CacheLumpNum(int lump, int tag)
{
byte *ptr;
if ((unsigned) lump >= numlumps)
{
I_Error("W_CacheLumpNum: %i >= numlumps", lump);
}
if (!lumpcache[lump])
{ // Need to read the lump in
ptr = Z_Malloc(W_LumpLength(lump), tag, &lumpcache[lump]);
W_ReadLump(lump, lumpcache[lump]);
}
else
{
Z_ChangeTag(lumpcache[lump], tag);
}
return lumpcache[lump];
}
//==========================================================================
//
// W_CacheLumpName
//
//==========================================================================
void *W_CacheLumpName(char *name, int tag)
{
return W_CacheLumpNum(W_GetNumForName(name), tag);
}
//==========================================================================
//
// W_Profile
//
//==========================================================================
// Ripped out for Heretic
/*
int info[2500][10];
int profilecount;
void W_Profile (void)
{
int i;
memblock_t *block;
void *ptr;
char ch;
FILE *f;
int j;
char name[9];
for (i=0 ; i<numlumps ; i++)
{
ptr = lumpcache[i];
if (!ptr)
{
ch = ' ';
continue;
}
else
{
block = (memblock_t *) ( (byte *)ptr - sizeof(memblock_t));
if (block->tag < PU_PURGELEVEL)
ch = 'S';
else
ch = 'P';
}
info[i][profilecount] = ch;
}
profilecount++;
f = fopen ("waddump.txt","w");
name[8] = 0;
for (i=0 ; i<numlumps ; i++)
{
memcpy (name,lumpinfo[i].name,8);
for (j=0 ; j<8 ; j++)
if (!name[j])
break;
for ( ; j<8 ; j++)
name[j] = ' ';
fprintf (f,"%s ",name);
for (j=0 ; j<profilecount ; j++)
fprintf (f," %c",info[i][j]);
fprintf (f,"\n");
}
fclose (f);
}
*/