author | antonc27 <antonc27@mail.ru> |
Wed, 24 Feb 2016 00:33:10 +0100 | |
changeset 11572 | 28afdaa159cb |
parent 8524 | a65e9bcf0a03 |
child 12213 | bb5522e88ab2 |
permissions | -rw-r--r-- |
/* * QPAK support routines for PhysicsFS. * * This archiver handles the archive format utilized by Quake 1 and 2. * Quake3-based games use the PkZip/Info-Zip format (which our zip.c * archiver handles). * * ======================================================================== * * This format info (in more detail) comes from: * http://debian.fmi.uni-sofia.bg/~sergei/cgsr/docs/pak.txt * * Quake PAK Format * * Header * (4 bytes) signature = 'PACK' * (4 bytes) directory offset * (4 bytes) directory length * * Directory * (56 bytes) file name * (4 bytes) file position * (4 bytes) file length * * ======================================================================== * * Please see the file LICENSE.txt in the source's root directory. * * This file written by Ryan C. Gordon. */ #define __PHYSICSFS_INTERNAL__ #include "physfs_internal.h" #if PHYSFS_SUPPORTS_QPAK #define QPAK_SIG 0x4B434150 /* "PACK" in ASCII. */ static UNPKentry *qpakLoadEntries(PHYSFS_Io *io, PHYSFS_uint32 fileCount) { UNPKentry *entries = NULL; UNPKentry *entry = NULL; entries = (UNPKentry *) allocator.Malloc(sizeof (UNPKentry) * fileCount); BAIL_IF_MACRO(entries == NULL, PHYSFS_ERR_OUT_OF_MEMORY, NULL); for (entry = entries; fileCount > 0; fileCount--, entry++) { if (!__PHYSFS_readAll(io, &entry->name, 56)) goto failed; if (!__PHYSFS_readAll(io, &entry->startPos, 4)) goto failed; if (!__PHYSFS_readAll(io, &entry->size, 4)) goto failed; entry->size = PHYSFS_swapULE32(entry->size); entry->startPos = PHYSFS_swapULE32(entry->startPos); } /* for */ return entries; failed: allocator.Free(entries); return NULL; } /* qpakLoadEntries */ static void *QPAK_openArchive(PHYSFS_Io *io, const char *name, int forWriting) { UNPKentry *entries = NULL; PHYSFS_uint32 val = 0; PHYSFS_uint32 pos = 0; 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, &val, 4), ERRPASS, NULL); if (PHYSFS_swapULE32(val) != QPAK_SIG) BAIL_MACRO(PHYSFS_ERR_UNSUPPORTED, NULL); BAIL_IF_MACRO(!__PHYSFS_readAll(io, &val, 4), ERRPASS, NULL); pos = PHYSFS_swapULE32(val); /* directory table offset. */ BAIL_IF_MACRO(!__PHYSFS_readAll(io, &val, 4), ERRPASS, NULL); count = PHYSFS_swapULE32(val); /* corrupted archive? */ BAIL_IF_MACRO((count % 64) != 0, PHYSFS_ERR_CORRUPT, NULL); count /= 64; BAIL_IF_MACRO(!io->seek(io, pos), ERRPASS, NULL); entries = qpakLoadEntries(io, count); BAIL_IF_MACRO(!entries, ERRPASS, NULL); return UNPK_openArchive(io, entries, count); } /* QPAK_openArchive */ const PHYSFS_Archiver __PHYSFS_Archiver_QPAK = { { "PAK", "Quake I/II format", "Ryan C. Gordon <icculus@icculus.org>", "http://icculus.org/physfs/", }, QPAK_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_QPAK */ /* end of qpak.c ... */