>.>

src/Compression.cpp

@@ -0,0 +1,55 @@
+#include "Compression.hpp"
+
+#include <zlib.h>
+
+namespace zelda
+{
+namespace io
+{
+namespace Compression
+{
+
+Int32 decompressZlib(Uint8 *src, Uint32 srcLen, Uint8* dst, Uint32 dstLen)
+{
+    z_stream strm;
+    strm.total_in  = strm.avail_in  = srcLen;
+    strm.total_out = strm.avail_out = dstLen;
+    strm.next_in   = (Bytef *) src;
+    strm.next_out  = (Bytef *) dst;
+
+    strm.zalloc = Z_NULL;
+    strm.zfree  = Z_NULL;
+    strm.opaque = Z_NULL;
+
+    Int32 err = -1;
+    Int32 ret = -1;
+
+    err = inflateInit2(&strm, (15 + 32)); //15 window bits, and the +32 tells zlib to to detect if using gzip or zlib
+    if (err == Z_OK) {
+        err = inflate(&strm, Z_FINISH);
+        if (err == Z_STREAM_END) {
+            ret = strm.total_out;
+        }
+        else {
+             inflateEnd(&strm);
+             return err;
+        }
+    }
+    else {
+        inflateEnd(&strm);
+        return err;
+    }
+
+    inflateEnd(&strm);
+
+    return ret;
+}
+
+void compressZlib(const Uint8 *src, Uint32 srcLen, Uint8 *dst, Uint32* dstLen)
+{
+    compress(dst, (uLongf*)dstLen, src, srcLen);
+}
+
+} // Compression
+} // io
+} // zelda