fistreambuf.h

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/* This software and supporting documentation are distributed by
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 *
 * This software is governed by the CeCILL-B license under
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 * You can  use, modify and/or redistribute the software under the
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 * and INRIA at the following URL "http://www.cecill.info".
 *
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 */

#ifndef CARTOBASE_STREAM_FISTREAMBUF_H
#define CARTOBASE_STREAM_FISTREAMBUF_H


//=============================================================================
//      H E A D E R  F I L E S
//=============================================================================

#include <cartobase/config/cartobase_config.h>
#if defined(CARTO_USE_PRE_ISO_HEADERS)
#include <streambuf.h>
#else
#include <streambuf>
#endif

namespace carto
{

  //===========================================================================
  //    C L A S S  D E C L A R A T I O N
  //===========================================================================

  template <class Extractor>
  class CARTOBASE_API fistreambuf : public std::streambuf
  {

  public:

    //---------------------------------------------------------------------
    //---------------------------------------------------------------------

    fistreambuf(std::streambuf* source, const Extractor& extractor,
                bool d = false);

    fistreambuf(std::streambuf* source, bool d = false);

    virtual ~fistreambuf();


    //---------------------------------------------------------------------
    //---------------------------------------------------------------------

    Extractor& extractor();


  protected:

    //---------------------------------------------------------------------
    //---------------------------------------------------------------------

    virtual int underflow();


    //---------------------------------------------------------------------
    //---------------------------------------------------------------------

    virtual int sync();

    virtual std::streambuf* setbuf(char* p , std::streamsize len);
    virtual pos_type seekoff( off_type, std::ios_base::seekdir, 
                              std::ios_base::openmode = std::ios_base::in 
                              | std::ios_base::out );


  private:

    //---------------------------------------------------------------------
    //---------------------------------------------------------------------

    std::streambuf* _source;

    Extractor _extractor;

    char _buffer;

    bool _delete;

  };


  //===========================================================================
  //    I N L I N E  M E T H O D S
  //===========================================================================

  template <class Extractor>
  inline
  Extractor&
  fistreambuf<Extractor>::extractor()
  {
    return _extractor;
  }

}

#endif