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Serializable.h

// Copyright (C) 2001 Kevin Duffy <kevin@buhbird.com>
//
// 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


#ifndef SERIALIZABLE_H
#define SERIALIZABLE_H

#include <fstream>
#include "Exceptions.h"
#include "Writeable.h"
#include "Readable.h"


class Serializable : virtual public Writeable,
                     virtual public Readable
{
   public:

      virtual void Save(const string& filename) const
      {
         ofstream fout;
         fout.open(filename.c_str());
         fout << ToString();
         fout.close();
      };


      virtual void Load(const string& filename) 
         throw (FileNotFoundException, UnknownException)
      {
         ifstream fin;
         try {
            OpenFile(fin, filename);
         }
         catch (const FileNotFoundException& e)
         {
            throw (e);
         }
         catch (...)
         {
            throw (UnknownException("Unknown error occured while trying to open: " + filename));
         }

         fin >> *this;
         fin.close();
      }; 
      
   protected:

      void OpenFile(ifstream& fin, const string& filename) throw(FileNotFoundException)
      { 
         fin.open(filename.c_str());
         if (!fin)
            throw (FileNotFoundException(filename.c_str()));
      };
};
#endif

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