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FlateStream.hh

/*
    libpdf++: a C++ Free library to generate PDF file
    Copyright (C) 2002 Nestal Wan

    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 2.1 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
*/
/*
    \file   FlateStream.hh
    \brief  definition of the flated stream class
    \date   2002-10-23
    \author Nestal Wan
*/

#ifndef __PDF_COMMON_FLATE_STREAM_HEADER_INCLUDED__
#define __PDF_COMMON_FLATE_STREAM_HEADER_INCLUDED__

#ifndef __PDF_CORE_STREAM_HEADER_INCLUDED__
#include "core/Stream.hh"
#endif

#include <vector>

namespace pdf { namespace common {

class CFlateStream : public core::CStream
{
private :
    std::vector<unsigned char> m_content ;

    int     m_inflate_level ;

public :
    template <typename InputIt>
    CFlateStream( InputIt first, InputIt last, int level = 0 )
        : m_inflate_level( level )
    {
        Assign( first, last ) ;
    }

    CFlateStream( ) ;
    
    ~CFlateStream( ) ;

    core::CObject* Dup( ) const ;

    template <typename InputIt>
    void Assign( InputIt first, InputIt last, int level = 0 )
    {
        // assign content
        m_content.assign( first, last ) ;
        
        // assign compression level
        m_inflate_level = level ;
    }

protected :
    const CStream::CByteVec& GetContent( CStream::CByteVec& output ) const ;
    void MakeDictionary( core::CDictionary& dict ) const ;
    const CByteVec& Buffer( ) const ;
} ;

} } // end of namespace

#endif

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