ZippedOutputStream.h
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00001 /***************************************************************************** 00002 * Copyright (C) 2011 by Benjamin Hadorn (b_hadorn@bluewin.ch) 00003 ***************************************************************************** 00004 * Project : Zeus Base Library 00005 * Module : ZippedOutputStream 00006 * Package : Zeus.ZeusBase.System 00007 * Author : Benjamin Hadorn 00008 * Date : 27.12.2011 00009 * System : Zeus-Framework 00010 ***************************************************************************** 00011 * Licence: * 00012 * This library is free software; you can redistribute it and/or modify * 00013 * it under the terms of the GNU Lesser General Public License as * 00014 * published by the Free Software Foundation; either version * 00015 * 2.1 of the License, or (at your option) any later version. * 00016 * * 00017 * This library is distributed in the hope that it will be useful, * 00018 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00019 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00020 * GNU Lesser General Public License for more details. * 00021 * * 00022 * You should have received a copy of the GNU Lesser General Public * 00023 * License along with this library; if not, write to the Free Software * 00024 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA * 00025 *****************************************************************************/ 00026 00027 /***************************************************************************** 00028 * Changes: 00029 * 27.12.2011 bha: created zeus 2.0 00030 *****************************************************************************/ 00031 00032 #ifndef ZippedOutputStreamH 00033 #define ZippedOutputStreamH 00034 00035 #include <zeusbase/System/FilterOutputStream.h> 00036 #include <zeusbase/System/ZObject.h> 00037 #include <zeusbase/System/Ptr.hpp> 00038 #include "zlib.h" 00039 00040 00041 BEGIN_NAMESPACE_Zeus 00042 00043 /****************************************************************************/ 00046 /****************************************************************************/ 00047 zeusbase_class TZippedOutputStream : public TFilterOutputStream 00048 { 00049 public: 00050 TZippedOutputStream(IOutputStream& rParentStream, 00051 Int iZipLevel = 4, 00052 bool bUseRawDeflate = false); 00053 00054 static Retval compressStream(const IByteArray& rRawInput, IByteArray& rCompressedOutput); 00055 00056 //Methods of IOutputStream 00057 virtual Retval MQUALIFIER write(const char* pBuffer, Int iBufferSize); 00058 virtual Retval MQUALIFIER writeInt8(Int8 cData); 00059 virtual void MQUALIFIER close(); 00060 virtual void MQUALIFIER flush(); 00061 00062 protected: 00063 virtual ~TZippedOutputStream(); 00064 00065 private: 00067 Int m_iZipLevel; 00069 bool m_bUseRawDeflate; 00071 TPtr<z_stream> m_ptrZipStream; 00073 bool m_bAvailable; 00074 00075 TByteArray m_aBuffer; 00076 00077 void init(); 00078 void uninit(); 00079 void writeBufferToZip(bool bFlush = false); 00080 }; 00081 00082 END_NAMESPACE_Zeus 00083 00084 #endif