#ifndef INFLATEINPUTSTREAMBUF_H #define INFLATEINPUTSTREAMBUF_H #include "zipios++/zipios-config.h" #include "zipios++/meta-iostreams.h" #include #include #include "zipios++/filterinputstreambuf.h" namespace zipios { using std::vector ; /** InflateInputStreambuf is an input stream filter, that inflates the input from the attached input stream. Deflation/Inflation is a compression/decompression method used in gzip and zip. The zlib library is used to perform the actual inflation, this class only wraps the functionality in an input stream filter. */ class InflateInputStreambuf : public FilterInputStreambuf { public: /** InflateInputStreambuf constructor. @param inbuf the streambuf to use for input. @param s_pos a position to reset the inbuf to before reading. Specify -1 to read from the current position. @param del_inbuf if true is specified inbuf will be deleted, when the InflateInputStreambuf is destructed. */ explicit InflateInputStreambuf( streambuf *inbuf, int s_pos = -1, bool del_inbuf = false ) ; virtual ~InflateInputStreambuf() ; /** Resets the zlib stream and purges input and output buffers. repositions the input streambuf at stream_position. @param stream_position a position to reset the inbuf to before reading. Specify -1 to read from the current position. */ bool reset( int stream_position = -1 ) ; protected: virtual int underflow() ; private: z_stream _zs ; bool _zs_initialized ; const int _invecsize ; vector< char > _invec ; protected: // FIXME: reconsider design? const int _outvecsize ; vector< char > _outvec ; private: /** Copy-constructor is private to prevent copying. */ InflateInputStreambuf( const InflateInputStreambuf &src ) ; /** Copy-assignment operator is private to prevent copying. */ const InflateInputStreambuf &operator= ( const InflateInputStreambuf &src ) ; }; } // namespace #endif /** \file Header file that defines InflateInputStreambuf. */ /* Zipios++ - a small C++ library that provides easy access to .zip files. Copyright (C) 2000 Thomas Søndergaard This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */