mirror of
https://github.com/xiaoyifang/goldendict-ng.git
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73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
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#include <stdlib.h>
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#include "decompress.hh"
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#include "zlib.h"
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#include "bzlib.h"
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string decompressZlib( char * bufptr, unsigned length )
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{
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z_stream zs;
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char buf[2048];
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string str;
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int res;
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memset( &zs, 0, sizeof(zs) );
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zs.next_in = (Bytef *)bufptr;
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zs.avail_in = length;
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while( 1 )
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{
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res = inflateInit( &zs );
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if( res != Z_OK )
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break;
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while( res != Z_STREAM_END )
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{
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memset( buf, 0, sizeof(buf) );
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zs.next_out = (Bytef *)buf;
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zs.avail_out = 2047;
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res = inflate( &zs, Z_SYNC_FLUSH );
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str += buf;
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if( res != Z_OK && res != Z_STREAM_END )
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break;
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}
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break;
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}
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inflateEnd( &zs );
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if( res != Z_STREAM_END )
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str.clear();
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return str;
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}
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string decompressBzip2( char * bufptr, unsigned length )
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{
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bz_stream zs;
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char buf[2048];
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string str;
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int res;
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memset( &zs, 0, sizeof(zs) );
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zs.next_in = bufptr;
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zs.avail_in = length;
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zs.total_in_lo32 = length;
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while( 1 )
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{
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res = BZ2_bzDecompressInit( &zs, 0, 0 );
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if( res != BZ_OK )
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break;
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while( res != BZ_STREAM_END )
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{
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memset( buf, 0, sizeof(buf) );
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zs.next_out = buf;
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zs.avail_out = 2047;
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zs.total_out_lo32 = length;
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res = BZ2_bzDecompress( &zs );
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str += buf;
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if( res != BZ_OK && res != BZ_STREAM_END )
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break;
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}
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break;
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}
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BZ2_bzDecompressEnd( &zs );
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if( res != BZ_STREAM_END )
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str.clear();
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return str;
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}
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