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00001 /******************************************************************************** 00002 * * 00003 * GZip compression on any stream * 00004 * * 00005 ********************************************************************************* 00006 * Copyright (C) 2003 by Mathew Robertson. All Rights Reserved. * 00007 ********************************************************************************* 00008 * This library is free software; you can redistribute it and/or * 00009 * modify it under the terms of the GNU Lesser General Public * 00010 * License as published by the Free Software Foundation; either * 00011 * version 2.1 of the License, or (at your option) any later version. * 00012 * * 00013 * This library is distributed in the hope that it will be useful, * 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * 00016 * Lesser General Public License for more details. * 00017 * * 00018 * You should have received a copy of the GNU Lesser General Public * 00019 * License along with this library; if not, write to the Free Software * 00020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. * 00021 ********************************************************************************/ 00022 #ifdef HAVE_LIBZ 00023 #ifndef FXGZIPSTREAM_H 00024 #define FXGZIPSTREAM_H 00025 00026 #ifndef FXBUFFEREDSTREAM_H 00027 #include "FXBufferedStream.h" 00028 #endif 00029 namespace FXEX { 00030 00031 /** 00032 * Provides a way to GZIP un/compress any type of FOX stream 00033 */ 00034 class FXAPI FXGzipStream : public FXBufferedStream { 00035 00036 private: 00037 FXint blockSize; // number of 100K block sizes - relates directly to compression factor 00038 00039 protected: 00040 00041 /// prior to saving buffer to stream, compress it 00042 virtual FXbool bufferSave(); 00043 00044 /// after loading from stream, uncompress it 00045 virtual FXbool bufferLoad(); 00046 00047 public: 00048 00049 /// Create a Gzip stream to save-to or load-from based on the direction of the underlying stream 00050 FXGzipStream(FXStream* s,FXint compFactor=COMPRESS_MAX,const FXObject* cont=NULL); 00051 00052 /// Destructor 00053 virtual ~FXGzipStream() {} 00054 }; 00055 00056 } // namespace FXEX 00057 #endif // FXGZIPSRTEAM_H 00058 #endif