120ca87015
git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5000 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
#ifndef INFLATEINPUTSTREAMBUF_H
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#define INFLATEINPUTSTREAMBUF_H
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#include "zipios-config.h"
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#include "meta-iostreams.h"
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#include <vector>
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#include <zlib.h>
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#include "filterinputstreambuf.h"
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namespace zipios {
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using std::vector ;
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/** InflateInputStreambuf is an input stream filter, that inflates the input
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from the attached input stream. Deflation/Inflation is a
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compression/decompression method used in gzip and zip. The zlib
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library is used to perform the actual inflation, this class only
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wraps the functionality in an input stream filter. */
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class InflateInputStreambuf : public FilterInputStreambuf {
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public:
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/** InflateInputStreambuf constructor.
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@param inbuf the streambuf to use for input.
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@param s_pos a position to reset the inbuf to before reading. Specify
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-1 to read from the current position.
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@param del_inbuf if true is specified inbuf will be deleted, when
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the InflateInputStreambuf is destructed.
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*/
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explicit InflateInputStreambuf( streambuf *inbuf, int s_pos = -1, bool del_inbuf = false ) ;
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virtual ~InflateInputStreambuf() ;
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/** Resets the zlib stream and purges input and output buffers.
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repositions the input streambuf at stream_position.
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@param stream_position a position to reset the inbuf to before reading. Specify
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-1 to read from the current position.
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*/
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bool reset( int stream_position = -1 ) ;
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protected:
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virtual int underflow() ;
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private:
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z_stream _zs ;
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bool _zs_initialized ;
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const int _invecsize ;
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vector< char > _invec ;
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protected: // FIXME: reconsider design?
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const int _outvecsize ;
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vector< char > _outvec ;
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private:
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/** Copy-constructor is private to prevent copying. */
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InflateInputStreambuf( const InflateInputStreambuf &src ) ;
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/** Copy-assignment operator is private to prevent copying. */
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const InflateInputStreambuf &operator= ( const InflateInputStreambuf &src ) ;
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};
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} // namespace
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#endif
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/** \file
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Header file that defines InflateInputStreambuf.
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*/
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/*
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Zipios++ - a small C++ library that provides easy access to .zip files.
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Copyright (C) 2000 Thomas S<>ndergaard
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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