diff -r 9afb44f030b6 -r 9d1d0fa8db02 misc/physfs/src/archiver_wad.c --- a/misc/physfs/src/archiver_wad.c Wed Feb 27 16:12:22 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,127 +0,0 @@ -/* - * WAD support routines for PhysicsFS. - * - * This driver handles DOOM engine archives ("wads"). - * This format (but not this driver) was designed by id Software for use - * with the DOOM engine. - * The specs of the format are from the unofficial doom specs v1.666 - * found here: http://www.gamers.org/dhs/helpdocs/dmsp1666.html - * The format of the archive: (from the specs) - * - * A WAD file has three parts: - * (1) a twelve-byte header - * (2) one or more "lumps" - * (3) a directory or "info table" that contains the names, offsets, and - * sizes of all the lumps in the WAD - * - * The header consists of three four-byte parts: - * (a) an ASCII string which must be either "IWAD" or "PWAD" - * (b) a 4-byte (long) integer which is the number of lumps in the wad - * (c) a long integer which is the file offset to the start of - * the directory - * - * The directory has one 16-byte entry for every lump. Each entry consists - * of three parts: - * - * (a) a long integer, the file offset to the start of the lump - * (b) a long integer, the size of the lump in bytes - * (c) an 8-byte ASCII string, the name of the lump, padded with zeros. - * For example, the "DEMO1" entry in hexadecimal would be - * (44 45 4D 4F 31 00 00 00) - * - * Note that there is no way to tell if an opened WAD archive is a - * IWAD or PWAD with this archiver. - * I couldn't think of a way to provide that information, without being too - * hacky. - * I don't think it's really that important though. - * - * - * Please see the file LICENSE.txt in the source's root directory. - * - * This file written by Travis Wells, based on the GRP archiver by - * Ryan C. Gordon. - */ - -#define __PHYSICSFS_INTERNAL__ -#include "physfs_internal.h" - -#if PHYSFS_SUPPORTS_WAD - -static UNPKentry *wadLoadEntries(PHYSFS_Io *io, PHYSFS_uint32 fileCount) -{ - PHYSFS_uint32 directoryOffset; - UNPKentry *entries = NULL; - UNPKentry *entry = NULL; - - BAIL_IF_MACRO(!__PHYSFS_readAll(io, &directoryOffset, 4), ERRPASS, 0); - directoryOffset = PHYSFS_swapULE32(directoryOffset); - - BAIL_IF_MACRO(!io->seek(io, directoryOffset), ERRPASS, 0); - - entries = (UNPKentry *) allocator.Malloc(sizeof (UNPKentry) * fileCount); - BAIL_IF_MACRO(!entries, PHYSFS_ERR_OUT_OF_MEMORY, NULL); - - for (entry = entries; fileCount > 0; fileCount--, entry++) - { - if (!__PHYSFS_readAll(io, &entry->startPos, 4)) goto failed; - if (!__PHYSFS_readAll(io, &entry->size, 4)) goto failed; - if (!__PHYSFS_readAll(io, &entry->name, 8)) goto failed; - - entry->name[8] = '\0'; /* name might not be null-terminated in file. */ - entry->size = PHYSFS_swapULE32(entry->size); - entry->startPos = PHYSFS_swapULE32(entry->startPos); - } /* for */ - - return entries; - -failed: - allocator.Free(entries); - return NULL; -} /* wadLoadEntries */ - - -static void *WAD_openArchive(PHYSFS_Io *io, const char *name, int forWriting) -{ - PHYSFS_uint8 buf[4]; - UNPKentry *entries = NULL; - PHYSFS_uint32 count = 0; - - assert(io != NULL); /* shouldn't ever happen. */ - - BAIL_IF_MACRO(forWriting, PHYSFS_ERR_READ_ONLY, NULL); - BAIL_IF_MACRO(!__PHYSFS_readAll(io, buf, sizeof (buf)), ERRPASS, NULL); - if ((memcmp(buf, "IWAD", 4) != 0) && (memcmp(buf, "PWAD", 4) != 0)) - BAIL_MACRO(PHYSFS_ERR_UNSUPPORTED, NULL); - - BAIL_IF_MACRO(!__PHYSFS_readAll(io, &count, sizeof (count)), ERRPASS, NULL); - count = PHYSFS_swapULE32(count); - - entries = wadLoadEntries(io, count); - BAIL_IF_MACRO(!entries, ERRPASS, NULL); - return UNPK_openArchive(io, entries, count); -} /* WAD_openArchive */ - - -const PHYSFS_Archiver __PHYSFS_Archiver_WAD = -{ - { - "WAD", - "DOOM engine format", - "Travis Wells ", - "http://www.3dmm2.com/doom/", - }, - WAD_openArchive, /* openArchive() method */ - UNPK_enumerateFiles, /* enumerateFiles() method */ - UNPK_openRead, /* openRead() method */ - UNPK_openWrite, /* openWrite() method */ - UNPK_openAppend, /* openAppend() method */ - UNPK_remove, /* remove() method */ - UNPK_mkdir, /* mkdir() method */ - UNPK_closeArchive, /* closeArchive() method */ - UNPK_stat /* stat() method */ -}; - -#endif /* defined PHYSFS_SUPPORTS_WAD */ - -/* end of wad.c ... */ -