AppPkg/Applications/Python/Python-2.7.10: Initial Checkin part 2/5.

[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.10 / Modules / zlib / uncompr.c

diff --git a/AppPkg/Applications/Python/Python-2.7.10/Modules/zlib/uncompr.c b/AppPkg/Applications/Python/Python-2.7.10/Modules/zlib/uncompr.c
new file mode 100644 (file)
index 0000000..6cfc6dd
--- /dev/null
+++ b/AppPkg/Applications/Python/Python-2.7.10/Modules/zlib/uncompr.c
@@ -0,0 +1,59 @@
+/* uncompr.c -- decompress a memory buffer\r
+ * Copyright (C) 1995-2003, 2010 Jean-loup Gailly.\r
+ * For conditions of distribution and use, see copyright notice in zlib.h\r
+ */\r
+\r
+/* @(#) $Id$ */\r
+\r
+#define ZLIB_INTERNAL\r
+#include "zlib.h"\r
+\r
+/* ===========================================================================\r
+     Decompresses the source buffer into the destination buffer.  sourceLen is\r
+   the byte length of the source buffer. Upon entry, destLen is the total\r
+   size of the destination buffer, which must be large enough to hold the\r
+   entire uncompressed data. (The size of the uncompressed data must have\r
+   been saved previously by the compressor and transmitted to the decompressor\r
+   by some mechanism outside the scope of this compression library.)\r
+   Upon exit, destLen is the actual size of the compressed buffer.\r
+\r
+     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not\r
+   enough memory, Z_BUF_ERROR if there was not enough room in the output\r
+   buffer, or Z_DATA_ERROR if the input data was corrupted.\r
+*/\r
+int ZEXPORT uncompress (dest, destLen, source, sourceLen)\r
+    Bytef *dest;\r
+    uLongf *destLen;\r
+    const Bytef *source;\r
+    uLong sourceLen;\r
+{\r
+    z_stream stream;\r
+    int err;\r
+\r
+    stream.next_in = (z_const Bytef *)source;\r
+    stream.avail_in = (uInt)sourceLen;\r
+    /* Check for source > 64K on 16-bit machine: */\r
+    if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;\r
+\r
+    stream.next_out = dest;\r
+    stream.avail_out = (uInt)*destLen;\r
+    if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;\r
+\r
+    stream.zalloc = (alloc_func)0;\r
+    stream.zfree = (free_func)0;\r
+\r
+    err = inflateInit(&stream);\r
+    if (err != Z_OK) return err;\r
+\r
+    err = inflate(&stream, Z_FINISH);\r
+    if (err != Z_STREAM_END) {\r
+        inflateEnd(&stream);\r
+        if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))\r
+            return Z_DATA_ERROR;\r
+        return err;\r
+    }\r
+    *destLen = stream.total_out;\r
+\r
+    err = inflateEnd(&stream);\r
+    return err;\r
+}\r