1 files changed, 55 insertions, 0 deletions
diff --git a/deps/uncompr.c b/deps/uncompr.c
new file mode 100644
index 0000000..c7e30b3
--- /dev/null
+++ b/deps/uncompr.c
@@ -0,0 +1,55 @@
+/* uncompr.c -- decompress a memory buffer
+ * Copyright (C) 1995-2003, 2010 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#define ZLIB_INTERNAL
+#include "zlib.h"
+
+/* ===========================================================================
+   Decompresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer. Upon entry, destLen is the total
+   size of the destination buffer, which must be large enough to hold the
+   entire uncompressed data. (The size of the uncompressed data must have
+   been saved previously by the compressor and transmitted to the decompressor
+   by some mechanism outside the scope of this compression library.)
+   Upon exit, destLen is the actual size of the compressed buffer.
+
+   uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer, or Z_DATA_ERROR if the input data was corrupted.
+   */
+int ZEXPORT uncompress (Bytef *dest, uLongf *destLen, const Bytef *source, uLong sourceLen)
+{
+   z_stream stream;
+   int err;
+
+   stream.next_in = (Bytef *)source;
+   stream.avail_in = (uInt)sourceLen;
+   /* Check for source > 64K on 16-bit machine: */
+   if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
+
+   stream.next_out = dest;
+   stream.avail_out = (uInt)*destLen;
+   if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
+
+   stream.zalloc = Z_NULL;
+   stream.zfree = Z_NULL;
+
+   err = inflateInit(&stream);
+   if (err != Z_OK) return err;
+
+   err = inflate(&stream, Z_FINISH);
+   if (err != Z_STREAM_END) {
+      inflateEnd(&stream);
+      if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
+         return Z_DATA_ERROR;
+      return err;
+   }
+   *destLen = stream.total_out;
+
+   err = inflateEnd(&stream);
+   return err;
+}