*misc

1 files changed, 135 insertions, 0 deletions

diff --git a/Source/3rdParty/physfs/physfs_archiver_slb.c b/Source/3rdParty/physfs/physfs_archiver_slb.c
new file mode 100644
index 0000000..4fc28d4
--- /dev/null
+++ b/Source/3rdParty/physfs/physfs_archiver_slb.c
@@ -0,0 +1,135 @@
+/*
+ * SLB support routines for PhysicsFS.
+ *
+ * This driver handles SLB archives ("slab files"). This uncompressed format
+ * is used in I-War / Independence War and Independence War: Defiance.
+ *
+ * The format begins with four zero bytes (version?), the file count and the
+ * location of the table of contents. Each ToC entry contains a 64-byte buffer
+ * containing a zero-terminated filename, the offset of the data, and its size.
+ * All the filenames begin with the separator character '\'. 
+ *
+ * Please see the file LICENSE.txt in the source's root directory.
+ *
+ * This file written by Aleksi Nurmi, based on the GRP archiver by
+ * Ryan C. Gordon.
+ */
+
+#define __PHYSICSFS_INTERNAL__
+#include "physfs_internal.h"
+
+#if PHYSFS_SUPPORTS_SLB
+
+static int slbLoadEntries(PHYSFS_Io *io, const PHYSFS_uint32 count, void *arc)
+{
+    PHYSFS_uint32 i;
+    for (i = 0; i < count; i++)
+    {
+        PHYSFS_uint32 pos;
+        PHYSFS_uint32 size;
+        char name[64];
+        char backslash;
+        char *ptr;
+
+        /* don't include the '\' in the beginning */
+        BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &backslash, 1), 0);
+        BAIL_IF(backslash != '\\', PHYSFS_ERR_CORRUPT, 0);
+
+        /* read the rest of the buffer, 63 bytes */
+        BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &name, 63), 0);
+        name[63] = '\0'; /* in case the name lacks the null terminator */
+
+        /* convert backslashes */
+        for (ptr = name; *ptr; ptr++)
+        {
+            if (*ptr == '\\')
+                *ptr = '/';
+        } /* for */
+
+        BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &pos, 4), 0);
+        pos = PHYSFS_swapULE32(pos);
+
+        BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &size, 4), 0);
+        size = PHYSFS_swapULE32(size);
+
+        BAIL_IF_ERRPASS(!UNPK_addEntry(arc, name, 0, -1, -1, pos, size), 0);
+    } /* for */
+
+    return 1;
+} /* slbLoadEntries */
+
+
+static void *SLB_openArchive(PHYSFS_Io *io, const char *name,
+                             int forWriting, int *claimed)
+{
+    PHYSFS_uint32 version;
+    PHYSFS_uint32 count;
+    PHYSFS_uint32 tocPos;
+    void *unpkarc;
+
+    /* There's no identifier on an SLB file, so we assume it's _not_ if the
+       file count or tocPos is zero. Beyond that, we'll assume it's
+       bogus/corrupt if the entries' filenames don't start with '\' or the
+       tocPos is past the end of the file (seek will fail). This probably
+       covers all meaningful cases where we would accidentally accept a non-SLB
+       file with this archiver. */
+
+    assert(io != NULL);  /* shouldn't ever happen. */
+
+    BAIL_IF(forWriting, PHYSFS_ERR_READ_ONLY, NULL);
+
+    BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &version, sizeof (version)), NULL);
+    version = PHYSFS_swapULE32(version);
+    BAIL_IF(version != 0, PHYSFS_ERR_UNSUPPORTED, NULL);
+
+    BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &count, sizeof (count)), NULL);
+    count = PHYSFS_swapULE32(count);
+    BAIL_IF(!count, PHYSFS_ERR_UNSUPPORTED, NULL);
+
+    /* offset of the table of contents */
+    BAIL_IF_ERRPASS(!__PHYSFS_readAll(io, &tocPos, sizeof (tocPos)), NULL);
+    tocPos = PHYSFS_swapULE32(tocPos);
+    BAIL_IF(!tocPos, PHYSFS_ERR_UNSUPPORTED, NULL);
+    
+    /* seek to the table of contents */
+    BAIL_IF_ERRPASS(!io->seek(io, tocPos), NULL);
+
+    unpkarc = UNPK_openArchive(io);
+    BAIL_IF_ERRPASS(!unpkarc, NULL);
+
+    if (!slbLoadEntries(io, count, unpkarc))
+    {
+        UNPK_abandonArchive(unpkarc);
+        return NULL;
+    } /* if */
+
+    *claimed = 1;  /* oh well. */
+
+    return unpkarc;
+} /* SLB_openArchive */
+
+
+const PHYSFS_Archiver __PHYSFS_Archiver_SLB =
+{
+    CURRENT_PHYSFS_ARCHIVER_API_VERSION,
+    {
+        "SLB",
+        "I-War / Independence War Slab file",
+        "Aleksi Nurmi <aleksi.nurmi@gmail.com>",
+        "https://bitbucket.org/ahnurmi/",
+        0,  /* supportsSymlinks */
+    },
+    SLB_openArchive,
+    UNPK_enumerate,
+    UNPK_openRead,
+    UNPK_openWrite,
+    UNPK_openAppend,
+    UNPK_remove,
+    UNPK_mkdir,
+    UNPK_stat,
+    UNPK_closeArchive
+};
+
+#endif  /* defined PHYSFS_SUPPORTS_SLB */
+
+/* end of physfs_archiver_slb.c ... */