fistreambuf.h

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/* This software and supporting documentation are distributed by
 *     Institut Federatif de Recherche 49
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 *     France
 *
 * This software is governed by the CeCILL-B license under
 * French law and abiding by the rules of distribution of free software.
 * You can  use, modify and/or redistribute the software under the
 * terms of the CeCILL-B license as circulated by CEA, CNRS
 * 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