FilterInputStream.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 : FilterInputStream 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 FilterInputStreamH 00033 #define FilterInputStreamH 00034 00035 00036 #include <zeusbase/System/AbstractInputStream.h> 00037 #include <zeusbase/System/ZObject.h> 00038 00039 BEGIN_NAMESPACE_Zeus 00040 00041 /**************************************************************************/ 00046 /**************************************************************************/ 00047 zeusbase_class TFilterInputStream : public TAbstractInputStream 00048 { 00049 public: 00050 TFilterInputStream(IInputStream& rParentStream); 00051 00052 //Methods of IInputStream 00053 virtual bool MQUALIFIER available() const; 00054 virtual bool MQUALIFIER isEndReached() const; 00055 virtual Retval MQUALIFIER read(char* pBuffer, Int iBufferSize, Int& rValidSize) const; 00056 virtual Int MQUALIFIER readItem() const; 00057 virtual void MQUALIFIER close(); 00058 virtual void MQUALIFIER reset(); 00059 virtual bool MQUALIFIER skip(Int iBytes = 1); 00060 00061 protected: 00062 TFilterInputStream(IInputStream& rParentStream, bool bDirectCreated); 00063 virtual ~TFilterInputStream(); 00064 00065 virtual Retval delegateReadBlockToReadItem(char* pBuffer, Int iBufferSize, Int& rValidSize) const; 00066 00067 private: 00069 IInputStream& m_rParentStream; 00070 }; 00071 00072 //Inline methods 00073 /****************************************************************************/ 00076 /****************************************************************************/ 00077 inline bool MQUALIFIER TFilterInputStream::isEndReached() const 00078 { 00079 return m_rParentStream.isEndReached(); 00080 } 00081 00082 /****************************************************************************/ 00085 /****************************************************************************/ 00086 inline Retval MQUALIFIER TFilterInputStream::read(char* pBuffer, Int iBufferSize, Int& rValidSize) const 00087 { 00088 return m_rParentStream.read(pBuffer, iBufferSize, rValidSize); 00089 } 00090 00091 /****************************************************************************/ 00094 /****************************************************************************/ 00095 inline Int MQUALIFIER TFilterInputStream::readItem() const 00096 { 00097 return m_rParentStream.readItem(); 00098 } 00099 00100 /****************************************************************************/ 00103 /****************************************************************************/ 00104 inline void MQUALIFIER TFilterInputStream::close() 00105 { 00106 m_rParentStream.close(); 00107 } 00108 00109 /****************************************************************************/ 00112 /****************************************************************************/ 00113 inline void MQUALIFIER TFilterInputStream::reset() 00114 { 00115 m_rParentStream.reset(); 00116 } 00117 00118 /****************************************************************************/ 00121 /****************************************************************************/ 00122 inline bool MQUALIFIER TFilterInputStream::available() const 00123 { 00124 return m_rParentStream.available(); 00125 } 00126 00127 00128 00129 END_NAMESPACE_Zeus 00130 00131 #endif