historic_bruno
41e3bad341
Adds BSD sysdep. Adds support for MAKE variable, overriding make command in our build scripts. Fixes more files not ending with newline. This was SVN commit r10994.
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/* Copyright (C) 2011 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "Compress.h"
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#include "lib/byte_order.h"
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#include "lib/external_libraries/zlib.h"
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void CompressZLib(const std::string& data, std::string& out, bool includeLengthHeader)
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{
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uLongf maxCompressedSize = compressBound(data.size());
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uLongf destLen = maxCompressedSize;
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out.clear();
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if (includeLengthHeader)
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{
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// Add a 4-byte uncompressed length header to the output
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out.resize(maxCompressedSize + 4);
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write_le32((void*)out.c_str(), data.size());
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int zok = compress((Bytef*)out.c_str() + 4, &destLen, (const Bytef*)data.c_str(), data.size());
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ENSURE(zok == Z_OK);
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out.resize(destLen + 4);
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}
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else
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{
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out.resize(maxCompressedSize);
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int zok = compress((Bytef*)out.c_str(), &destLen, (const Bytef*)data.c_str(), data.size());
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ENSURE(zok == Z_OK);
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out.resize(destLen);
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}
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}
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void DecompressZLib(const std::string& data, std::string& out, bool includeLengthHeader)
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{
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ENSURE(includeLengthHeader); // otherwise we don't know how much to allocate
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out.clear();
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out.resize(read_le32(data.c_str()));
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uLongf destLen = out.size();
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int zok = uncompress((Bytef*)out.c_str(), &destLen, (const Bytef*)data.c_str() + 4, data.size() - 4);
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ENSURE(zok == Z_OK);
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ENSURE(destLen == out.size());
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// TODO: better error reporting might be nice
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}
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