10.8

1 files changed, 53 insertions, 0 deletions

diff --git a/zen/zlib_wrap.cpp b/zen/zlib_wrap.cpp
new file mode 100755
index 00000000..fbbe2f09
--- /dev/null
+++ b/zen/zlib_wrap.cpp
@@ -0,0 +1,53 @@
+// *****************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under    *
+// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0          *
+// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
+// *****************************************************************************
+
+#include "zlib_wrap.h"
+//Windows:     use the SAME zlib version that wxWidgets is linking against! //C:\Data\Projects\wxWidgets\Source\src\zlib\zlib.h
+//Linux/macOS: use zlib system header for both wxWidgets and Curl (zlib is required for HTTP)
+//             => don't compile wxWidgets with: --with-zlib=builtin
+#include <zlib.h>
+
+using namespace zen;
+
+
+size_t zen::impl::zlib_compressBound(size_t len)
+{
+    return ::compressBound(static_cast<uLong>(len)); //upper limit for buffer size, larger than input size!!!
+}
+
+
+size_t zen::impl::zlib_compress(const void* src, size_t srcLen, void* trg, size_t trgLen, int level) //throw ZlibInternalError
+{
+    uLongf bufferSize = static_cast<uLong>(trgLen);
+    const int rv = ::compress2(static_cast<Bytef*>(trg),       //Bytef* dest,
+                               &bufferSize,                    //uLongf* destLen,
+                               static_cast<const Bytef*>(src), //const Bytef* source,
+                               static_cast<uLong>(srcLen),     //uLong sourceLen,
+                               level);                         //int level
+    // Z_OK: success
+    // Z_MEM_ERROR: not enough memory
+    // Z_BUF_ERROR: not enough room in the output buffer
+    if (rv != Z_OK || bufferSize > trgLen)
+        throw ZlibInternalError();
+    return bufferSize;
+}
+
+
+size_t zen::impl::zlib_decompress(const void* src, size_t srcLen, void* trg, size_t trgLen) //throw ZlibInternalError
+{
+    uLongf bufferSize = static_cast<uLong>(trgLen);
+    const int rv = ::uncompress(static_cast<Bytef*>(trg),       //Bytef* dest,
+                                &bufferSize,                    //uLongf* destLen,
+                                static_cast<const Bytef*>(src), //const Bytef* source,
+                                static_cast<uLong>(srcLen));    //uLong sourceLen
+    // Z_OK: success
+    // Z_MEM_ERROR: not enough memory
+    // Z_BUF_ERROR: not enough room in the output buffer
+    // Z_DATA_ERROR: input data was corrupted or incomplete
+    if (rv != Z_OK || bufferSize > trgLen)
+        throw ZlibInternalError();
+    return bufferSize;
+}