archivers/wad.c
author Ryan C. Gordon <icculus@icculus.org>
Mon, 15 Dec 2003 04:01:18 +0000
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child 610 1d8057a5d08e
permissions -rw-r--r--
Added Doom WAD support.
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/*
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 * WAD support routines for PhysicsFS.
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 *
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 * This driver handles DOOM engine archives ("wads"). 
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 * This format (but not this driver) was designed by id Software for use
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 *  with the DOOM engine.
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 * The specs of the format are from the unofficial doom specs v1.666
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 * found here: http://www.gamers.org/dhs/helpdocs/dmsp1666.html
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 * The format of the archive: (from the specs)
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 *
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 *  A WAD file has three parts:
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 *  (1) a twelve-byte header
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 *  (2) one or more "lumps"
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 *  (3) a directory or "info table" that contains the names, offsets, and
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 *      sizes of all the lumps in the WAD
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 *
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 *  The header consists of three four-byte parts:
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 *    (a) an ASCII string which must be either "IWAD" or "PWAD"
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 *    (b) a 4-byte (long) integer which is the number of lumps in the wad
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 *    (c) a long integer which is the file offset to the start of
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 *    the directory
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 *
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 *  The directory has one 16-byte entry for every lump. Each entry consists
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 *  of three parts:
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 *
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 *    (a) a long integer, the file offset to the start of the lump
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 *    (b) a long integer, the size of the lump in bytes
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 *    (c) an 8-byte ASCII string, the name of the lump, padded with zeros.
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 *        For example, the "DEMO1" entry in hexadecimal would be
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 *        (44 45 4D 4F 31 00 00 00)
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 * 
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 * Note that there is no way to tell if an opened WAD archive is a
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 *  IWAD or PWAD with this archiver.
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 * I couldn't think of a way to provide that information, without being too
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 *  hacky.
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 * I don't think it's really that important though.
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 *
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 *
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 * Please see the file LICENSE in the source's root directory.
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 *
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 * This file written by Travis Wells, based on the GRP archiver by
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 *  Ryan C. Gordon.
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 */
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#if HAVE_CONFIG_H
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#  include <config.h>
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#endif
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#if (defined PHYSFS_SUPPORTS_WAD)
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "physfs.h"
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#define __PHYSICSFS_INTERNAL__
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#include "physfs_internal.h"
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typedef struct
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{
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    char name[9];
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    PHYSFS_uint32 startPos;
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    PHYSFS_uint32 size;
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} WADentry;
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typedef struct
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{
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    char *filename;
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    PHYSFS_sint64 last_mod_time;
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    PHYSFS_uint32 entryCount;
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    PHYSFS_uint32 entryOffset;
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    WADentry *entries;
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} WADinfo;
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typedef struct
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{
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    void *handle;
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    WADentry *entry;
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    PHYSFS_uint32 curPos;
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} WADfileinfo;
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static void WAD_dirClose(DirHandle *h);
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static PHYSFS_sint64 WAD_read(FileHandle *handle, void *buffer,
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                              PHYSFS_uint32 objSize, PHYSFS_uint32 objCount);
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static PHYSFS_sint64 WAD_write(FileHandle *handle, const void *buffer,
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                               PHYSFS_uint32 objSize, PHYSFS_uint32 objCount);
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static int WAD_eof(FileHandle *handle);
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static PHYSFS_sint64 WAD_tell(FileHandle *handle);
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static int WAD_seek(FileHandle *handle, PHYSFS_uint64 offset);
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static PHYSFS_sint64 WAD_fileLength(FileHandle *handle);
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static int WAD_fileClose(FileHandle *handle);
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static int WAD_isArchive(const char *filename, int forWriting);
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static DirHandle *WAD_openArchive(const char *name, int forWriting);
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static LinkedStringList *WAD_enumerateFiles(DirHandle *h,
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                                            const char *dirname,
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                                            int omitSymLinks);
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static int WAD_exists(DirHandle *h, const char *name);
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static int WAD_isDirectory(DirHandle *h, const char *name, int *fileExists);
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static int WAD_isSymLink(DirHandle *h, const char *name, int *fileExists);
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static PHYSFS_sint64 WAD_getLastModTime(DirHandle *h, const char *n, int *e);
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static FileHandle *WAD_openRead(DirHandle *h, const char *name, int *exist);
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static FileHandle *WAD_openWrite(DirHandle *h, const char *name);
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static FileHandle *WAD_openAppend(DirHandle *h, const char *name);
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static int WAD_remove(DirHandle *h, const char *name);
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static int WAD_mkdir(DirHandle *h, const char *name);
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const PHYSFS_ArchiveInfo __PHYSFS_ArchiveInfo_WAD =
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{
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    "WAD",
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    /* !!! FIXME WAD_ARCHIVE_DESCRIPTION, */ "DOOM engine format",
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    "Travis Wells <traviswells@mchsi.com>",
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    "http://www.3dmm2.com/doom/",
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};
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static const FileFunctions __PHYSFS_FileFunctions_WAD =
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{
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    WAD_read,       /* read() method       */
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    WAD_write,      /* write() method      */
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    WAD_eof,        /* eof() method        */
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    WAD_tell,       /* tell() method       */
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    WAD_seek,       /* seek() method       */
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    WAD_fileLength, /* fileLength() method */
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    WAD_fileClose   /* fileClose() method  */
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};
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const DirFunctions __PHYSFS_DirFunctions_WAD =
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{
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    &__PHYSFS_ArchiveInfo_WAD,
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    WAD_isArchive,          /* isArchive() method      */
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    WAD_openArchive,        /* openArchive() method    */
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    WAD_enumerateFiles,     /* enumerateFiles() method */
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    WAD_exists,             /* exists() method         */
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    WAD_isDirectory,        /* isDirectory() method    */
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    WAD_isSymLink,          /* isSymLink() method      */
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    WAD_getLastModTime,     /* getLastModTime() method */
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    WAD_openRead,           /* openRead() method       */
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    WAD_openWrite,          /* openWrite() method      */
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    WAD_openAppend,         /* openAppend() method     */
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diff changeset
   142
    WAD_remove,             /* remove() method         */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   143
    WAD_mkdir,              /* mkdir() method          */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   144
    WAD_dirClose            /* dirClose() method       */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   145
};
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   146
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   147
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   148
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   149
static void WAD_dirClose(DirHandle *h)
3a91332776e0 Added Doom WAD support.
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parents:
diff changeset
   150
{
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parents:
diff changeset
   151
    WADinfo *info = ((WADinfo *) h->opaque);
3a91332776e0 Added Doom WAD support.
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parents:
diff changeset
   152
    free(info->filename);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   153
    free(info->entries);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   154
    free(info);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   155
    free(h);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   156
} /* WAD_dirClose */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   157
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   158
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   159
static PHYSFS_sint64 WAD_read(FileHandle *handle, void *buffer,
3a91332776e0 Added Doom WAD support.
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parents:
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   160
                              PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
3a91332776e0 Added Doom WAD support.
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parents:
diff changeset
   161
{
3a91332776e0 Added Doom WAD support.
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parents:
diff changeset
   162
    WADfileinfo *finfo = (WADfileinfo *) (handle->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   163
    WADentry *entry = finfo->entry;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   164
    PHYSFS_uint32 bytesLeft = entry->size - finfo->curPos;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   165
    PHYSFS_uint32 objsLeft = (bytesLeft / objSize);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   166
    PHYSFS_sint64 rc;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   167
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   168
    if (objsLeft < objCount)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   169
        objCount = objsLeft;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   170
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   171
    rc = __PHYSFS_platformRead(finfo->handle, buffer, objSize, objCount);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   172
    if (rc > 0)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   173
        finfo->curPos += (PHYSFS_uint32) (rc * objSize);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   174
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   175
    return(rc);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   176
} /* WAD_read */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   177
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   178
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   179
static PHYSFS_sint64 WAD_write(FileHandle *handle, const void *buffer,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   180
                               PHYSFS_uint32 objSize, PHYSFS_uint32 objCount)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   181
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   182
    BAIL_MACRO(ERR_NOT_SUPPORTED, -1);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   183
} /* WAD_write */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   184
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   185
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   186
static int WAD_eof(FileHandle *handle)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   187
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   188
    WADfileinfo *finfo = (WADfileinfo *) (handle->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   189
    WADentry *entry = finfo->entry;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   190
    return(finfo->curPos >= entry->size);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   191
} /* WAD_eof */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   192
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   193
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   194
static PHYSFS_sint64 WAD_tell(FileHandle *handle)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   195
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   196
    return(((WADfileinfo *) (handle->opaque))->curPos);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   197
} /* WAD_tell */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   198
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   199
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   200
static int WAD_seek(FileHandle *handle, PHYSFS_uint64 offset)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   201
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   202
    WADfileinfo *finfo = (WADfileinfo *) (handle->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   203
    WADentry *entry = finfo->entry;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   204
    int rc;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   205
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   206
    BAIL_IF_MACRO(offset < 0, ERR_INVALID_ARGUMENT, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   207
    BAIL_IF_MACRO(offset >= entry->size, ERR_PAST_EOF, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   208
    rc = __PHYSFS_platformSeek(finfo->handle, entry->startPos + offset);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   209
    if (rc)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   210
        finfo->curPos = (PHYSFS_uint32) offset;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   211
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   212
    return(rc);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   213
} /* WAD_seek */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   214
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   215
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   216
static PHYSFS_sint64 WAD_fileLength(FileHandle *handle)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   217
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   218
    WADfileinfo *finfo = ((WADfileinfo *) handle->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   219
    return((PHYSFS_sint64) finfo->entry->size);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   220
} /* WAD_fileLength */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   221
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   222
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   223
static int WAD_fileClose(FileHandle *handle)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   224
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   225
    WADfileinfo *finfo = ((WADfileinfo *) handle->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   226
    BAIL_IF_MACRO(!__PHYSFS_platformClose(finfo->handle), NULL, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   227
    free(finfo);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   228
    free(handle);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   229
    return(1);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   230
} /* WAD_fileClose */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   231
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   232
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   233
static int wad_open(const char *filename, int forWriting,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   234
                    void **fh, PHYSFS_uint32 *count,PHYSFS_uint32 *offset)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   235
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   236
    PHYSFS_uint8 buf[4];
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   237
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   238
    *fh = NULL;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   239
    BAIL_IF_MACRO(forWriting, ERR_ARC_IS_READ_ONLY, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   240
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   241
    *fh = __PHYSFS_platformOpenRead(filename);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   242
    BAIL_IF_MACRO(*fh == NULL, NULL, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   243
    
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   244
    if (__PHYSFS_platformRead(*fh, buf, 4, 1) != 1)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   245
        goto openWad_failed;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   246
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   247
    if (memcmp(buf, "IWAD", 4) != 0 && memcmp(buf, "PWAD", 4) != 0)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   248
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   249
        __PHYSFS_setError(ERR_UNSUPPORTED_ARCHIVE);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   250
        goto openWad_failed;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   251
    } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   252
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   253
    if (__PHYSFS_platformRead(*fh, count, sizeof (PHYSFS_uint32), 1) != 1)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   254
        goto openWad_failed;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   255
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   256
    *count = PHYSFS_swapULE32(*count);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   257
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   258
    if (__PHYSFS_platformRead(*fh, offset, sizeof (PHYSFS_uint32), 1) != 1)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   259
        goto openWad_failed;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   260
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   261
    *offset = PHYSFS_swapULE32(*offset);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   262
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   263
    return(1);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   264
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   265
openWad_failed:
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   266
    if (*fh != NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   267
        __PHYSFS_platformClose(*fh);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   268
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   269
    *count = -1;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   270
    *fh = NULL;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   271
    return(0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   272
} /* wad_open */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   273
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   274
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   275
static int WAD_isArchive(const char *filename, int forWriting)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   276
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   277
    void *fh;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   278
    PHYSFS_uint32 fileCount,offset;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   279
    int retval = wad_open(filename, forWriting, &fh, &fileCount,&offset);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   280
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   281
    if (fh != NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   282
        __PHYSFS_platformClose(fh);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   283
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   284
    return(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   285
} /* WAD_isArchive */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   286
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   287
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   288
static int wad_entry_cmp(void *_a, PHYSFS_uint32 one, PHYSFS_uint32 two)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   289
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   290
    WADentry *a = (WADentry *) _a;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   291
    return(strcmp(a[one].name, a[two].name));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   292
} /* wad_entry_cmp */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   293
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   294
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   295
static void wad_entry_swap(void *_a, PHYSFS_uint32 one, PHYSFS_uint32 two)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   296
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   297
    WADentry tmp;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   298
    WADentry *first = &(((WADentry *) _a)[one]);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   299
    WADentry *second = &(((WADentry *) _a)[two]);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   300
    memcpy(&tmp, first, sizeof (WADentry));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   301
    memcpy(first, second, sizeof (WADentry));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   302
    memcpy(second, &tmp, sizeof (WADentry));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   303
} /* wad_entry_swap */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   304
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   305
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   306
static int wad_load_entries(const char *name, int forWriting, WADinfo *info)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   307
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   308
    void *fh = NULL;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   309
    PHYSFS_uint32 fileCount;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   310
    PHYSFS_uint32 directoryOffset;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   311
    WADentry *entry;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   312
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   313
    BAIL_IF_MACRO(!wad_open(name, forWriting, &fh, &fileCount,&directoryOffset), NULL, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   314
    info->entryCount = fileCount;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   315
    info->entries = (WADentry *) malloc(sizeof (WADentry) * fileCount);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   316
    if (info->entries == NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   317
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   318
        __PHYSFS_platformClose(fh);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   319
        BAIL_MACRO(ERR_OUT_OF_MEMORY, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   320
    } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   321
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   322
    __PHYSFS_platformSeek(fh,directoryOffset);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   323
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   324
    for (entry = info->entries; fileCount > 0; fileCount--, entry++)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   325
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   326
        if (__PHYSFS_platformRead(fh, &entry->startPos, 4, 1) != 1)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   327
        {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   328
            __PHYSFS_platformClose(fh);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   329
            return(0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   330
        } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   331
        
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   332
        if (__PHYSFS_platformRead(fh, &entry->size, 4, 1) != 1)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   333
        {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   334
            __PHYSFS_platformClose(fh);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   335
            return(0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   336
        } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   337
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   338
        if (__PHYSFS_platformRead(fh, &entry->name, 8, 1) != 1)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   339
        {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   340
            __PHYSFS_platformClose(fh);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   341
            return(0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   342
        } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   343
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   344
        entry->name[8] = '\0'; /* name might not be null-terminated in file. */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   345
        entry->size = PHYSFS_swapULE32(entry->size);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   346
        entry->startPos = PHYSFS_swapULE32(entry->startPos);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   347
    } /* for */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   348
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   349
    __PHYSFS_platformClose(fh);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   350
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   351
    __PHYSFS_sort(info->entries, info->entryCount,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   352
                  wad_entry_cmp, wad_entry_swap);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   353
    return(1);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   354
} /* wad_load_entries */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   355
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   356
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   357
static DirHandle *WAD_openArchive(const char *name, int forWriting)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   358
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   359
    WADinfo *info;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   360
    DirHandle *retval = malloc(sizeof (DirHandle));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   361
    PHYSFS_sint64 modtime = __PHYSFS_platformGetLastModTime(name);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   362
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   363
    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   364
    info = retval->opaque = malloc(sizeof (WADinfo));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   365
    if (info == NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   366
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   367
        __PHYSFS_setError(ERR_OUT_OF_MEMORY);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   368
        goto WAD_openArchive_failed;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   369
    } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   370
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   371
    memset(info, '\0', sizeof (WADinfo));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   372
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   373
    info->filename = (char *) malloc(strlen(name) + 1);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   374
    if (info->filename == NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   375
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   376
        __PHYSFS_setError(ERR_OUT_OF_MEMORY);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   377
        goto WAD_openArchive_failed;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   378
    } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   379
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   380
    if (!wad_load_entries(name, forWriting, info))
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   381
        goto WAD_openArchive_failed;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   382
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   383
    strcpy(info->filename, name);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   384
    info->last_mod_time = modtime;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   385
    retval->funcs = &__PHYSFS_DirFunctions_WAD;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   386
    return(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   387
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   388
WAD_openArchive_failed:
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   389
    if (retval != NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   390
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   391
        if (retval->opaque != NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   392
        {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   393
            if (info->filename != NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   394
                free(info->filename);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   395
            if (info->entries != NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   396
                free(info->entries);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   397
            free(info);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   398
        } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   399
        free(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   400
    } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   401
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   402
    return(NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   403
} /* WAD_openArchive */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   404
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   405
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   406
static LinkedStringList *WAD_enumerateFiles(DirHandle *h,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   407
                                            const char *dirname,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   408
                                            int omitSymLinks)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   409
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   410
    WADinfo *info = ((WADinfo *) h->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   411
    WADentry *entry = info->entries;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   412
    LinkedStringList *retval = NULL, *p = NULL;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   413
    PHYSFS_uint32 max = info->entryCount;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   414
    PHYSFS_uint32 i;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   415
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   416
    /* no directories in WAD files. */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   417
    BAIL_IF_MACRO(*dirname != '\0', ERR_NOT_A_DIR, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   418
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   419
    for (i = 0; i < max; i++, entry++)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   420
        retval = __PHYSFS_addToLinkedStringList(retval, &p, entry->name, -1);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   421
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   422
    return(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   423
} /* WAD_enumerateFiles */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   424
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   425
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   426
static WADentry *wad_find_entry(WADinfo *info, const char *name)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   427
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   428
    char *ptr = strchr(name, '.');
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   429
    WADentry *a = info->entries;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   430
    PHYSFS_sint32 lo = 0;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   431
    PHYSFS_sint32 hi = (PHYSFS_sint32) (info->entryCount - 1);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   432
    PHYSFS_sint32 middle;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   433
    int rc;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   434
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   435
    /*
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   436
     * Rule out filenames to avoid unneeded processing...no dirs,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   437
     *   big filenames, or extensions > 3 chars.
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   438
     */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   439
    BAIL_IF_MACRO((ptr) && (strlen(ptr) > 4), ERR_NO_SUCH_FILE, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   440
    BAIL_IF_MACRO(strlen(name) > 12, ERR_NO_SUCH_FILE, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   441
    BAIL_IF_MACRO(strchr(name, '/') != NULL, ERR_NO_SUCH_FILE, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   442
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   443
    while (lo <= hi)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   444
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   445
        middle = lo + ((hi - lo) / 2);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   446
        rc = strcmp(name, a[middle].name);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   447
        if (rc == 0)  /* found it! */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   448
            return(&a[middle]);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   449
        else if (rc > 0)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   450
            lo = middle + 1;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   451
        else
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   452
            hi = middle - 1;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   453
    } /* while */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   454
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   455
    BAIL_MACRO(ERR_NO_SUCH_FILE, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   456
} /* wad_find_entry */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   457
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   458
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   459
static int WAD_exists(DirHandle *h, const char *name)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   460
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   461
    return(wad_find_entry(((WADinfo *) h->opaque), name) != NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   462
} /* WAD_exists */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   463
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   464
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   465
static int WAD_isDirectory(DirHandle *h, const char *name, int *fileExists)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   466
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   467
    *fileExists = WAD_exists(h, name);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   468
    return(0);  /* never directories in a wad. */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   469
} /* WAD_isDirectory */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   470
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   471
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   472
static int WAD_isSymLink(DirHandle *h, const char *name, int *fileExists)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   473
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   474
    *fileExists = WAD_exists(h, name);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   475
    return(0);  /* never symlinks in a wad. */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   476
} /* WAD_isSymLink */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   477
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   478
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   479
static PHYSFS_sint64 WAD_getLastModTime(DirHandle *h,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   480
                                        const char *name,
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   481
                                        int *fileExists)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   482
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   483
    WADinfo *info = ((WADinfo *) h->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   484
    PHYSFS_sint64 retval = -1;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   485
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   486
    *fileExists = (wad_find_entry(info, name) != NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   487
    if (*fileExists)  /* use time of WAD itself in the physical filesystem. */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   488
        retval = ((WADinfo *) h->opaque)->last_mod_time;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   489
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   490
    return(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   491
} /* WAD_getLastModTime */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   492
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   493
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   494
static FileHandle *WAD_openRead(DirHandle *h, const char *fnm, int *fileExists)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   495
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   496
    WADinfo *info = ((WADinfo *) h->opaque);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   497
    FileHandle *retval;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   498
    WADfileinfo *finfo;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   499
    WADentry *entry;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   500
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   501
    entry = wad_find_entry(info, fnm);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   502
    *fileExists = (entry != NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   503
    BAIL_IF_MACRO(entry == NULL, NULL, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   504
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   505
    retval = (FileHandle *) malloc(sizeof (FileHandle));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   506
    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   507
    finfo = (WADfileinfo *) malloc(sizeof (WADfileinfo));
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   508
    if (finfo == NULL)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   509
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   510
        free(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   511
        BAIL_MACRO(ERR_OUT_OF_MEMORY, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   512
    } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   513
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   514
    finfo->handle = __PHYSFS_platformOpenRead(info->filename);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   515
    if ( (finfo->handle == NULL) ||
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   516
         (!__PHYSFS_platformSeek(finfo->handle, entry->startPos)) )
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   517
    {
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   518
        free(finfo);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   519
        free(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   520
        return(NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   521
    } /* if */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   522
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   523
    finfo->curPos = 0;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   524
    finfo->entry = entry;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   525
    retval->opaque = (void *) finfo;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   526
    retval->funcs = &__PHYSFS_FileFunctions_WAD;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   527
    retval->dirHandle = h;
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   528
    return(retval);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   529
} /* WAD_openRead */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   530
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   531
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   532
static FileHandle *WAD_openWrite(DirHandle *h, const char *name)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   533
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   534
    BAIL_MACRO(ERR_NOT_SUPPORTED, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   535
} /* WAD_openWrite */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   536
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   537
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   538
static FileHandle *WAD_openAppend(DirHandle *h, const char *name)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   539
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   540
    BAIL_MACRO(ERR_NOT_SUPPORTED, NULL);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   541
} /* WAD_openAppend */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   542
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   543
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   544
static int WAD_remove(DirHandle *h, const char *name)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   545
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   546
    BAIL_MACRO(ERR_NOT_SUPPORTED, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   547
} /* WAD_remove */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   548
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   549
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   550
static int WAD_mkdir(DirHandle *h, const char *name)
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   551
{
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   552
    BAIL_MACRO(ERR_NOT_SUPPORTED, 0);
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   553
} /* WAD_mkdir */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   554
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   555
#endif  /* defined PHYSFS_SUPPORTS_WAD */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   556
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   557
/* end of wad.c ... */
3a91332776e0 Added Doom WAD support.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
   558