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00001 /******************************************************************************** 00002 * * 00003 * BZip compression on arbitrary streams * 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_LIBBZ2 00023 #ifndef FXBZIPSTREAM_H 00024 #define FXBZIPSTREAM_H 00025 00026 #ifndef FXBUFFEREDSTREAM_H 00027 #include "FXBufferedStream.h" 00028 #endif 00029 namespace FXEX { 00030 00031 /** 00032 * Provides a way to BZIP un/compress any type of FOX stream 00033 * 00034 * Notes: 00035 * - currently the 'work factor' of the Bzip library, has no public interface 00036 */ 00037 class FXAPI FXBzipStream : public FXBufferedStream { 00038 private: 00039 FXint verbosity; // the debugging level of the library 00040 FXint workFactor; // manipulate the compression algorithm - zero implies the default value 00041 FXint small; // alter algorithm to use less memory at the expense of speed 00042 FXint blockSize; // number of 100K block sizes - relates directly to compression factor 00043 00044 protected: 00045 /// prior to saving to stream, compress it 00046 virtual FXbool bufferSave(); 00047 00048 /// after loading from stream, uncompress it 00049 virtual FXbool bufferLoad(); 00050 00051 public: 00052 /// Create a Bzip stream to save-to or load-from based on the direction of the underlying stream 00053 FXBzipStream(FXStream* s,FXint compFactor=COMPRESS_MAX,const FXObject* cont=NULL); 00054 00055 /// Destructor 00056 virtual ~FXBzipStream() {} 00057 }; 00058 00059 } // namespace FXEX 00060 #endif // FXBZIPSTREAM_H 00061 #endif