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| author | untodesu <kirill@untode.su> | 2025-03-15 16:22:09 +0500 |
|---|---|---|
| committer | untodesu <kirill@untode.su> | 2025-03-15 16:22:09 +0500 |
| commit | 3bf42c6ff3805a0d42bbc661794a95ff31bedc26 (patch) | |
| tree | 05049955847504808d6bed2bb7b155f8b03807bb /deps/src/physfs/physfs_archiver_mvl.c | |
| parent | 02294547dcde0d4ad76e229106702261e9f10a51 (diff) | |
| download | voxelius-3bf42c6ff3805a0d42bbc661794a95ff31bedc26.tar.bz2 voxelius-3bf42c6ff3805a0d42bbc661794a95ff31bedc26.zip | |
Add whatever I was working on for the last month
Diffstat (limited to 'deps/src/physfs/physfs_archiver_mvl.c')
| -rw-r--r-- | deps/src/physfs/physfs_archiver_mvl.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/deps/src/physfs/physfs_archiver_mvl.c b/deps/src/physfs/physfs_archiver_mvl.c new file mode 100644 index 0000000..7c02b37 --- /dev/null +++ b/deps/src/physfs/physfs_archiver_mvl.c @@ -0,0 +1,110 @@ +/*
+ * MVL support routines for PhysicsFS.
+ *
+ * This driver handles Descent II Movielib archives.
+ *
+ * The file format of MVL is quite easy...
+ *
+ * //MVL File format - Written by Heiko Herrmann
+ * char sig[4] = {'D','M', 'V', 'L'}; // "DMVL"=Descent MoVie Library
+ *
+ * int num_files; // the number of files in this MVL
+ *
+ * struct {
+ * char file_name[13]; // Filename, padded to 13 bytes with 0s
+ * int file_size; // filesize in bytes
+ * }DIR_STRUCT[num_files];
+ *
+ * struct {
+ * char data[file_size]; // The file data
+ * }FILE_STRUCT[num_files];
+ *
+ * (That info is from http://www.descent2.com/ddn/specs/mvl/)
+ *
+ * Please see the file LICENSE.txt in the source's root directory.
+ *
+ * This file written by Bradley Bell.
+ * Based on grp.c by Ryan C. Gordon.
+ */
+
+#define __PHYSICSFS_INTERNAL__
+#include "physfs_internal.h"
+
+#if PHYSFS_SUPPORTS_MVL
+
+static int mvlLoadEntries(PHYSFS_Io *io, const PHYSFS_uint32 count, void *arc)
+{
+ PHYSFS_uint32 pos = 8 + (17 * count); /* past sig+metadata. */
+ PHYSFS_uint32 i;
+
+ for (i = 0; i < count; i++)
+ {
+ PHYSFS_uint32 size;
+ char name[13];
+ BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, name, 13), 0);
+ BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &size, 4), 0);
+ name[12] = '\0'; /* just in case. */
+ size = PHYSFS_swapULE32(size);
+ BAIL_IF_ERRPASS(!UNPK_addEntry(arc, name, 0, -1, -1, pos, size), 0);
+ pos += size;
+ } /* for */
+
+ return 1;
+} /* mvlLoadEntries */
+
+
+static void *MVL_openArchive(PHYSFS_Io *io, const char *name,
+ int forWriting, int *claimed)
+{
+ PHYSFS_uint8 buf[4];
+ PHYSFS_uint32 count = 0;
+ void *unpkarc;
+
+ assert(io != NULL); /* shouldn't ever happen. */
+ BAIL_IF(forWriting, PHYSFS_ERR_READ_ONLY, NULL);
+ BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, buf, 4), NULL);
+ BAIL_IF(memcmp(buf, "DMVL", 4) != 0, PHYSFS_ERR_UNSUPPORTED, NULL);
+
+ *claimed = 1;
+
+ BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &count, sizeof(count)), NULL);
+ count = PHYSFS_swapULE32(count);
+
+ unpkarc = UNPK_openArchive(io, 0, 1);
+ BAIL_IF_ERRPASS(!unpkarc, NULL);
+
+ if (!mvlLoadEntries(io, count, unpkarc))
+ {
+ UNPK_abandonArchive(unpkarc);
+ return NULL;
+ } /* if */
+
+ return unpkarc;
+} /* MVL_openArchive */
+
+
+const PHYSFS_Archiver __PHYSFS_Archiver_MVL =
+{
+ CURRENT_PHYSFS_ARCHIVER_API_VERSION,
+ {
+ "MVL",
+ "Descent II Movielib format",
+ "Bradley Bell <btb@icculus.org>",
+ "https://icculus.org/physfs/",
+ 0, /* supportsSymlinks */
+ },
+ MVL_openArchive,
+ UNPK_enumerate,
+ UNPK_openRead,
+ UNPK_openWrite,
+ UNPK_openAppend,
+ UNPK_remove,
+ UNPK_mkdir,
+ UNPK_stat,
+ UNPK_closeArchive
+};
+
+#endif /* defined PHYSFS_SUPPORTS_MVL */
+
+/* end of physfs_archiver_mvl.c ... */
+
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