108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
//-----------------------------------------------------------------------------
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// TmxUtil.cpp
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//
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// Copyright (c) 2010-2012, Tamir Atias
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL TAMIR ATIAS BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: Tamir Atias
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//-----------------------------------------------------------------------------
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#include <stdlib.h>
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#include <zlib.h>
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#include "TmxUtil.h"
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#include "base64.h"
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namespace Tmx {
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std::string Util::DecodeBase64(const std::string &str)
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{
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return base64_decode(str);
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}
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char *Util::DecompressGZIP(const char *data, int dataSize, int expectedSize)
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{
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int bufferSize = expectedSize;
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int ret;
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z_stream strm;
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char *out = (char*)malloc(bufferSize);
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strm.zalloc = Z_NULL;
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strm.zfree = Z_NULL;
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strm.opaque = Z_NULL;
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strm.next_in = (Bytef*)data;
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strm.avail_in = dataSize;
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strm.next_out = (Bytef*)out;
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strm.avail_out = bufferSize;
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ret = inflateInit2(&strm, 15 + 32);
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if (ret != Z_OK)
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{
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free(out);
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return NULL;
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}
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do
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{
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ret = inflate(&strm, Z_SYNC_FLUSH);
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switch (ret)
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{
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case Z_NEED_DICT:
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case Z_STREAM_ERROR:
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ret = Z_DATA_ERROR;
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case Z_DATA_ERROR:
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case Z_MEM_ERROR:
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inflateEnd(&strm);
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free(out);
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return NULL;
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}
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if (ret != Z_STREAM_END)
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{
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out = (char *) realloc(out, bufferSize * 2);
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if (!out)
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{
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inflateEnd(&strm);
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free(out);
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return NULL;
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}
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strm.next_out = (Bytef *)(out + bufferSize);
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strm.avail_out = bufferSize;
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bufferSize *= 2;
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}
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}
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while (ret != Z_STREAM_END);
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if (strm.avail_in != 0)
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{
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free(out);
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return NULL;
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}
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inflateEnd(&strm);
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return out;
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}
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};
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