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author | B Stack <bgstack15@gmail.com> | 2019-04-15 12:34:36 +0000 |
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committer | B Stack <bgstack15@gmail.com> | 2019-04-15 12:34:36 +0000 |
commit | bac0deab0f1b7ae8845514970284637f2e9faa68 (patch) | |
tree | f759fbac3eced54ff7ce3ac6fdd0c2ea6c2b053c /wx+/zlib_wrap.h | |
parent | Merge branch '10.10' into 'master' (diff) | |
parent | remove files deleted in upstream (diff) | |
download | FreeFileSync-bac0deab0f1b7ae8845514970284637f2e9faa68.tar.gz FreeFileSync-bac0deab0f1b7ae8845514970284637f2e9faa68.tar.bz2 FreeFileSync-bac0deab0f1b7ae8845514970284637f2e9faa68.zip |
Merge branch '10.11' into 'master'10.11
10.11
Latest changes:
* Last FreeFileSync version supporting Windows XP and Vista
* Fixed crash on multi-monitor set
* Fixed dialogs not showing after opening UAC prompt
* Support launching through symlink (Linux)
* Added example desktop starter files (Linux)
* Fixed misleading error when determining file permissions support
* Updated wxWidgets, libcurl, libssh2, VS, GCC, Xcode
See merge request opensource-tracking/FreeFileSync!8
Diffstat (limited to 'wx+/zlib_wrap.h')
-rwxr-xr-x | wx+/zlib_wrap.h | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/wx+/zlib_wrap.h b/wx+/zlib_wrap.h deleted file mode 100755 index d3bb017b..00000000 --- a/wx+/zlib_wrap.h +++ /dev/null @@ -1,114 +0,0 @@ -// ***************************************************************************** -// * 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 * -// ***************************************************************************** - -#ifndef ZLIB_WRAP_H_428597064566 -#define ZLIB_WRAP_H_428597064566 - -#include <zen/serialize.h> - - -namespace zen -{ -class ZlibInternalError {}; - -// compression level must be between 0 and 9: -// 0: no compression -// 9: best compression -template <class BinContainer> //as specified in serialize.h -BinContainer compress(const BinContainer& stream, int level); //throw ZlibInternalError -//caveat: output stream is physically larger than input! => strip additional reserved space if needed: "BinContainer(output.begin(), output.end())" - -template <class BinContainer> -BinContainer decompress(const BinContainer& stream); //throw ZlibInternalError - - - - - - - - - - - -//######################## implementation ########################## -namespace impl -{ -size_t zlib_compressBound(size_t len); -size_t zlib_compress (const void* src, size_t srcLen, void* trg, size_t trgLen, int level); //throw ZlibInternalError -size_t zlib_decompress(const void* src, size_t srcLen, void* trg, size_t trgLen); //throw ZlibInternalError -} - - -template <class BinContainer> -BinContainer compress(const BinContainer& stream, int level) //throw ZlibInternalError -{ - BinContainer contOut; - if (!stream.empty()) //don't dereference iterator into empty container! - { - //save uncompressed stream size for decompression - const uint64_t uncompressedSize = stream.size(); //use portable number type! - contOut.resize(sizeof(uncompressedSize)); - std::copy(reinterpret_cast<const std::byte*>(&uncompressedSize), - reinterpret_cast<const std::byte*>(&uncompressedSize) + sizeof(uncompressedSize), - &*contOut.begin()); - - const size_t bufferEstimate = impl::zlib_compressBound(stream.size()); //upper limit for buffer size, larger than input size!!! - - contOut.resize(contOut.size() + bufferEstimate); - - const size_t bytesWritten = impl::zlib_compress(&*stream.begin(), - stream.size(), - &*contOut.begin() + contOut.size() - bufferEstimate, - bufferEstimate, - level); //throw ZlibInternalError - if (bytesWritten < bufferEstimate) - contOut.resize(contOut.size() - (bufferEstimate - bytesWritten)); //caveat: unsigned arithmetics - //caveat: physical memory consumption still *unchanged*! - } - return contOut; -} - - -template <class BinContainer> -BinContainer decompress(const BinContainer& stream) //throw ZlibInternalError -{ - BinContainer contOut; - if (!stream.empty()) //don't dereference iterator into empty container! - { - //retrieve size of uncompressed data - uint64_t uncompressedSize = 0; //use portable number type! - if (stream.size() < sizeof(uncompressedSize)) - throw ZlibInternalError(); - std::copy(&*stream.begin(), - &*stream.begin() + sizeof(uncompressedSize), - reinterpret_cast<std::byte*>(&uncompressedSize)); - //attention: contOut MUST NOT be empty! Else it will pass a nullptr to zlib_decompress() => Z_STREAM_ERROR although "uncompressedSize == 0"!!! - //secondary bug: don't dereference iterator into empty container! - if (uncompressedSize == 0) //cannot be 0: compress() directly maps empty -> empty container skipping zlib! - throw ZlibInternalError(); - - try - { - contOut.resize(static_cast<size_t>(uncompressedSize)); //throw std::bad_alloc - } - catch (std::bad_alloc&) //most likely due to data corruption! - { - throw ZlibInternalError(); - } - - const size_t bytesWritten = impl::zlib_decompress(&*stream.begin() + sizeof(uncompressedSize), - stream.size() - sizeof(uncompressedSize), - &*contOut.begin(), - static_cast<size_t>(uncompressedSize)); //throw ZlibInternalError - if (bytesWritten != static_cast<size_t>(uncompressedSize)) - throw ZlibInternalError(); - } - return contOut; -} -} - -#endif //ZLIB_WRAP_H_428597064566 |