--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/archiver_mvl.c	Fri Feb 22 05:43:56 2013 +0100
@@ -0,0 +1,103 @@
+/*
+ * 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 UNPKentry *mvlLoadEntries(PHYSFS_Io *io, PHYSFS_uint32 fileCount)
+{
+    PHYSFS_uint32 location = 8;  /* sizeof sig. */
+    UNPKentry *entries = NULL;
+    UNPKentry *entry = NULL;
+
+    entries = (UNPKentry *) allocator.Malloc(sizeof (UNPKentry) * fileCount);
+    BAIL_IF_MACRO(entries == NULL, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+
+    location += (17 * fileCount);
+
+    for (entry = entries; fileCount > 0; fileCount--, entry++)
+    {
+        if (!__PHYSFS_readAll(io, &entry->name, 13)) goto failed;
+        if (!__PHYSFS_readAll(io, &entry->size, 4)) goto failed;
+        entry->size = PHYSFS_swapULE32(entry->size);
+        entry->startPos = location;
+        location += entry->size;
+    } /* for */
+
+    return entries;
+
+failed:
+    allocator.Free(entries);
+    return NULL;
+} /* mvlLoadEntries */
+
+
+static void *MVL_openArchive(PHYSFS_Io *io, const char *name, int forWriting)
+{
+    PHYSFS_uint8 buf[4];
+    PHYSFS_uint32 count = 0;
+    UNPKentry *entries = NULL;
+
+    assert(io != NULL);  /* shouldn't ever happen. */
+    BAIL_IF_MACRO(forWriting, PHYSFS_ERR_READ_ONLY, NULL);
+    BAIL_IF_MACRO(!__PHYSFS_readAll(io, buf, 4), ERRPASS, NULL);
+    BAIL_IF_MACRO(memcmp(buf, "DMVL", 4) != 0, PHYSFS_ERR_UNSUPPORTED, NULL);
+    BAIL_IF_MACRO(!__PHYSFS_readAll(io, &count, sizeof(count)), ERRPASS, NULL);
+
+    count = PHYSFS_swapULE32(count);
+    entries = mvlLoadEntries(io, count);
+    return (!entries) ? NULL : UNPK_openArchive(io, entries, count);
+} /* MVL_openArchive */
+
+
+const PHYSFS_Archiver __PHYSFS_Archiver_MVL =
+{
+    {
+        "MVL",
+        "Descent II Movielib format",
+        "Bradley Bell <btb@icculus.org>",
+        "http://icculus.org/physfs/",
+    },
+    MVL_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_MVL */
+
+/* end of mvl.c ... */
+