mirror of https://github.com/axmolengine/axmol.git
142 lines
3.7 KiB
C++
142 lines
3.7 KiB
C++
/****************************************************************************
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Copyright (c) 2010 cocos2d-x.org
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include <zlib.h>
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#include "ZipUtils.h"
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#include "ccMacros.h"
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namespace cocos2d
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{
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int ZipUtils::inflateMemory_(unsigned char *in, unsigned int inLength, unsigned char **out, unsigned int *outLength)
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{
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#if 1
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/* ret value */
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int err = Z_OK;
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/* 256k initial decompress buffer */
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int bufferSize = 256 * 1024;
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*out = new unsigned char[bufferSize];
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z_stream d_stream; /* decompression stream */
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d_stream.zalloc = (alloc_func)0;
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d_stream.zfree = (free_func)0;
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d_stream.opaque = (voidpf)0;
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d_stream.next_in = in;
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d_stream.avail_in = inLength;
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d_stream.next_out = *out;
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d_stream.avail_out = bufferSize;
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/* window size to hold 256k */
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if( (err = inflateInit2(&d_stream, 15 + 32)) != Z_OK )
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{
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return err;
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}
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for (;;) {
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err = inflate(&d_stream, Z_NO_FLUSH);
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if (err == Z_STREAM_END)
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{
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break;
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}
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switch (err) {
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case Z_NEED_DICT:
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err = Z_DATA_ERROR;
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case Z_DATA_ERROR:
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case Z_MEM_ERROR:
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inflateEnd(&d_stream);
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return err;
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}
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// not enough memory ?
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if (err != Z_STREAM_END)
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{
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// memory in iPhone is precious
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// Should buffer factor be 1.5 instead of 2 ?
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#define BUFFER_INC_FACTOR (2)
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delete [] *out;
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*out = new unsigned char[bufferSize * BUFFER_INC_FACTOR];
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/* not enough memory, ouch */
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if (! *out )
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{
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CCLOG("cocos2d: ZipUtils: realloc failed");
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inflateEnd(&d_stream);
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return Z_MEM_ERROR;
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}
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d_stream.next_out = *out + bufferSize;
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d_stream.avail_out = bufferSize;
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bufferSize *= BUFFER_INC_FACTOR;
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}
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}
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*outLength = bufferSize - d_stream.avail_out;
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err = inflateEnd(&d_stream);
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return err;
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#else
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return 0;
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#endif
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}
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int ZipUtils::inflateMemory(unsigned char *in, unsigned int inLength, unsigned char **out)
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{
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#if 1
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unsigned int outLength = 0;
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int err = inflateMemory_(in, inLength, out, &outLength);
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if (err != Z_OK || *out == NULL) {
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if (err == Z_MEM_ERROR)
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{
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CCLOG("cocos2d: ZipUtils: Out of memory while decompressing map data!");
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} else
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if (err == Z_VERSION_ERROR)
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{
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CCLOG("cocos2d: ZipUtils: Incompatible zlib version!");
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} else
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if (err == Z_DATA_ERROR)
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{
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CCLOG("cocos2d: ZipUtils: Incorrect zlib compressed data!");
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}
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else
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{
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CCLOG("cocos2d: ZipUtils: Unknown error while decompressing map data!");
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}
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delete[] *out;
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*out = NULL;
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outLength = 0;
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}
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return outLength;
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#else
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return 0;
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#endif
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}
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} // end of namespace cocos2d
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