diff options
Diffstat (limited to 'deps/src/physfs/physfs_archiver_hog.c')
| -rw-r--r-- | deps/src/physfs/physfs_archiver_hog.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/deps/src/physfs/physfs_archiver_hog.c b/deps/src/physfs/physfs_archiver_hog.c deleted file mode 100644 index 36103ea..0000000 --- a/deps/src/physfs/physfs_archiver_hog.c +++ /dev/null @@ -1,170 +0,0 @@ -/*
- * HOG support routines for PhysicsFS.
- *
- * This driver handles Descent I/II/III HOG archives.
- *
- * The Descent I/II format is very simple:
- *
- * The file always starts with the 3-byte signature "DHF" (Descent
- * HOG file). After that the files of a HOG are just attached after
- * another, divided by a 17 bytes header, which specifies the name
- * and length (in bytes) of the forthcoming file! So you just read
- * the header with its information of how big the following file is,
- * and then skip exact that number of bytes to get to the next file
- * in that HOG.
- *
- * char sig[3] = {'D', 'H', 'F'}; // "DHF"=Descent HOG File
- *
- * struct {
- * char file_name[13]; // Filename, padded to 13 bytes with 0s
- * int file_size; // filesize in bytes
- * char data[file_size]; // The file data
- * } FILE_STRUCT; // Repeated until the end of the file.
- *
- * (That info is from http://www.descent2.com/ddn/specs/hog/)
- *
- * Descent 3 moved to HOG2 format, which starts with the chars "HOG2",
- * then 32-bits for the number of contained files, 32 bits for the offset
- * to the first file's data, then 56 bytes of 0xFF (reserved?). Then for
- * each file, there's 36 bytes for filename (null-terminated, rest of bytes
- * are garbage), 32-bits unknown/reserved (always zero?), 32-bits of length
- * of file data, 32-bits of time since Unix epoch. Then immediately following,
- * for each file is their uncompressed content, you can find its offset
- * by starting at the initial data offset and adding the filesize of each
- * prior file.
- *
- * This information was found at:
- * https://web.archive.org/web/20020213004051/http://descent-3.com/ddn/specs/hog/
- *
- *
- * Please see the file LICENSE.txt in the source's root directory.
- *
- * This file written by Bradley Bell and Ryan C. Gordon.
- */
-
-#define __PHYSICSFS_INTERNAL__
-#include "physfs_internal.h"
-
-#if PHYSFS_SUPPORTS_HOG
-
-static int readui32(PHYSFS_Io *io, PHYSFS_uint32 *val)
-{
- PHYSFS_uint32 v;
- BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &v, sizeof (v)), 0);
- *val = PHYSFS_swapULE32(v);
- return 1;
-} /* readui32 */
-
-static int hog1LoadEntries(PHYSFS_Io *io, void *arc)
-{
- const PHYSFS_uint64 iolen = io->length(io);
- PHYSFS_uint32 pos = 3;
-
- while (pos < iolen)
- {
- PHYSFS_uint32 size;
- char name[13];
-
- BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, name, 13), 0);
- BAIL_IF_ERRPASS(!readui32(io, &size), 0);
- name[12] = '\0'; /* just in case. */
- pos += 13 + 4;
-
- BAIL_IF_ERRPASS(!UNPK_addEntry(arc, name, 0, -1, -1, pos, size), 0);
- pos += size;
-
- /* skip over entry */
- BAIL_IF_ERRPASS(!io->seek(io, pos), 0);
- } /* while */
-
- return 1;
-} /* hogLoadEntries */
-
-static int hog2LoadEntries(PHYSFS_Io *io, void *arc)
-{
- PHYSFS_uint32 numfiles;
- PHYSFS_uint32 pos;
- PHYSFS_uint32 i;
-
- BAIL_IF_ERRPASS(!readui32(io, &numfiles), 0);
- BAIL_IF_ERRPASS(!readui32(io, &pos), 0);
- BAIL_IF_ERRPASS(!io->seek(io, 68), 0); /* skip to end of header. */
-
- for (i = 0; i < numfiles; i++) {
- char name[37];
- PHYSFS_uint32 reserved;
- PHYSFS_uint32 size;
- PHYSFS_uint32 mtime;
- BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, name, 36), 0);
- BAIL_IF_ERRPASS(!readui32(io, &reserved), 0);
- BAIL_IF_ERRPASS(!readui32(io, &size), 0);
- BAIL_IF_ERRPASS(!readui32(io, &mtime), 0);
- name[36] = '\0'; /* just in case */
- BAIL_IF_ERRPASS(!UNPK_addEntry(arc, name, 0, mtime, mtime, pos, size), 0);
- pos += size;
- }
-
- return 1;
-} /* hog2LoadEntries */
-
-
-static void *HOG_openArchive(PHYSFS_Io *io, const char *name,
- int forWriting, int *claimed)
-{
- PHYSFS_uint8 buf[3];
- void *unpkarc = NULL;
- int hog1 = 0;
-
- assert(io != NULL); /* shouldn't ever happen. */
- BAIL_IF(forWriting, PHYSFS_ERR_READ_ONLY, NULL);
- BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, buf, 3), NULL);
-
- if (memcmp(buf, "DHF", 3) == 0)
- hog1 = 1; /* original HOG (Descent 1 and 2) archive */
- else
- {
- BAIL_IF(memcmp(buf, "HOG", 3) != 0, PHYSFS_ERR_UNSUPPORTED, NULL); /* Not HOG2 */
- BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, buf, 1), NULL);
- BAIL_IF(buf[0] != '2', PHYSFS_ERR_UNSUPPORTED, NULL); /* Not HOG2 */
- } /* else */
-
- *claimed = 1;
-
- unpkarc = UNPK_openArchive(io, 0, 1);
- BAIL_IF_ERRPASS(!unpkarc, NULL);
-
- if (!(hog1 ? hog1LoadEntries(io, unpkarc) : hog2LoadEntries(io, unpkarc)))
- {
- UNPK_abandonArchive(unpkarc);
- return NULL;
- } /* if */
-
- return unpkarc;
-} /* HOG_openArchive */
-
-
-const PHYSFS_Archiver __PHYSFS_Archiver_HOG =
-{
- CURRENT_PHYSFS_ARCHIVER_API_VERSION,
- {
- "HOG",
- "Descent I/II/III HOG file format",
- "Bradley Bell <btb@icculus.org>",
- "https://icculus.org/physfs/",
- 0, /* supportsSymlinks */
- },
- HOG_openArchive,
- UNPK_enumerate,
- UNPK_openRead,
- UNPK_openWrite,
- UNPK_openAppend,
- UNPK_remove,
- UNPK_mkdir,
- UNPK_stat,
- UNPK_closeArchive
-};
-
-#endif /* defined PHYSFS_SUPPORTS_HOG */
-
-/* end of physfs_archiver_hog.c ... */
-
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