itemR.h

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/* This software and supporting documentation are distributed by
 *     Institut Federatif de Recherche 49
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 *     91191 Gif-sur-Yvette cedex
 *     France
 *
 * 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
 * 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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 */
 
/*
 *  Data item reader class
 */
#ifndef AIMS_IO_ITEMR_H
#define AIMS_IO_ITEMR_H
 
#include <aims/config/aimsdata_config.h>
#include <string>
#include <iostream>
#include <cartobase/stream/sstream.h>
 
namespace aims
{
 
  template<class T>
  class AIMSDATA_API ItemReader
  {
  public:
    virtual ~ItemReader() {}
 
    virtual void read( std::istream & is, T & item ) const
      { read( is, &item, 1 ); }
    virtual void read( std::istream & is, T* pitem, size_t n ) const = 0;
    void read( const std::string &istring, T &item ) const
      { read( istring, &item, 1 ); }
    void read( const std::string &istring, T *pitem, size_t n ) const;
    virtual ItemReader<T>* reader( const std::string & openmode = "binar", 
                                   bool bswap = false ) const = 0;
  };
 
  template <class T>
  inline 
  void ItemReader<T>::read( const std::string &istring, 
                            T *pitem, size_t n ) const
  {
    std::istringstream is( istring.c_str() );
    read( is, pitem, n );
  }
}
 
 
#endif