//------------------------------------------------------------------------------
// 
// This file is part of Toolkit for Conceptual Modeling (TCM).
// (c) copyright 1997, Vrije Universiteit Amsterdam.
// Author: Frank Dehne (frank@cs.vu.nl).
//
// TCM is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version. 
// 
// TCM 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with TCM; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//-----------------------------------------------------------------------------
#ifndef _FILE_H
#define _FILE_H

#include "bool.h"
#include "lstring.h"

/// Abstract file class.
class File {
/*@Doc: {\large {\bf scope:} global} */
public:
	///
	File();
	///
	virtual ~File();

	/// open a file.
	virtual void Open(const string* file);

	/// close current the file.
	virtual void Close() {opened = False;}

	/// is it a correct file.
	virtual bool Good() = 0;

	/// return file name.
	const string* GetFileName() {return &fileName;}
protected:
	///
	bool IsOpened() {return opened;}
private:
	/// The file is currently open.
	bool opened;

	/// The file that is opened.
	string fileName;
};
#endif
