FFStream.hpp

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#pragma ident "$Id: FFStream.hpp 3316 2012-09-11 06:44:29Z yanweignss $"

#ifndef GPSTK_FFSTREAM_HPP
#define GPSTK_FFSTREAM_HPP

//============================================================================
//
//  This file is part of GPSTk, the GPS Toolkit.
//
//  The GPSTk 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
//  any later version.
//
//  The GPSTk 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 GPSTk; if not, write to the Free Software Foundation,
//  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
//
//  Copyright 2004, The University of Texas at Austin
//
//============================================================================

//============================================================================
//
//This software developed by Applied Research Laboratories at the University of
//Texas at Austin, under contract to an agency or agencies within the U.S.
//Department of Defense. The U.S. Government retains all rights to use,
//duplicate, distribute, disclose, or release this software.
//
//Pursuant to DoD Directive 523024
//
// DISTRIBUTION STATEMENT A: This software has been approved for public
//                           release, distribution is unlimited.
//
//=============================================================================



#include <iostream>
#include <fstream>
#include <string>
#include <typeinfo>

#include "FFStreamError.hpp"
#include "FFData.hpp"
#include "StringUtils.hpp"


namespace gpstk
{

   NEW_EXCEPTION_CLASS(EndOfFile, gpstk::FFStreamError);

   class FFStream : public std::fstream
   {
   public:

      virtual ~FFStream(void) {};


      FFStream()
            : recordNumber(0) {};


      FFStream( const char* fn, std::ios::openmode mode=std::ios::in )
         : std::fstream(fn, mode), recordNumber(0), filename(fn)
      { clear(); }


      FFStream( const std::string& fn, std::ios::openmode mode=std::ios::in )
         : std::fstream(fn.c_str(), mode), recordNumber(0), filename(fn)
      { clear(); };


      virtual void open( const char* fn, std::ios::openmode mode );


      virtual void open( const std::string& fn, std::ios::openmode mode )
      { open( fn.c_str(), mode ); };


      void dumpState(std::ostream& s = std::cout) const;


      inline void conditionalThrow(void) throw(FFStreamError)
      {

         if (exceptions() & std::fstream::failbit)
         {
            GPSTK_THROW(mostRecentException);
         }

      };

      static bool IsFFStream(std::istream& i)
      {
         try
         { 
            FFStream& r = dynamic_cast<FFStream&>(i);
         }
         catch(...) 
         {
            return false;
         }

         return true;
      }


      FFStreamError mostRecentException;


      unsigned int recordNumber;


      std::string filename;



      friend class FFData;


   protected:


      virtual void tryFFStreamGet(FFData& rec)
         throw(FFStreamError, gpstk::StringUtils::StringException);


      virtual void tryFFStreamPut(const FFData& rec)
         throw(FFStreamError, gpstk::StringUtils::StringException);


   }; // End of class 'FFStream'


}  // End of namespace gpstk
#endif   // GPSTK_FFSTREAM_HPP

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