// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

//-----------------------------------------------------------------------------
// eoFileMonitor.h
// (c) Marc Schoenauer, Maarten Keijzer and GeNeura Team, 2000
/* 
    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 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

    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
             Marc.Schoenauer@polytechnique.fr
             mkeijzer@dhi.dk
 */
//-----------------------------------------------------------------------------
/** Modified the default behavior, so that it erases existing files.
Can be modified in the ctor.
MS 25/11/00
*/

#ifndef _eoFileMonitor_h
#define _eoFileMonitor_h

#include <string>
#include <fstream>

#include <utils/eoMonitor.h>
#include <eoObject.h>

/**
    Prints statistics to file
*/
class eoFileMonitor : public eoMonitor
{
public :
    eoFileMonitor(std::string _filename, std::string _delim = " ", 
		  bool _keep = false) : 
      filename(_filename), delim(_delim), keep(keep)
  {
    if (! _keep)
      {
	ofstream os(filename.c_str());
	if (!os)
	  {
	    string str = "eoFileMonitor: Could not open " + filename;
	    throw runtime_error(str);
	  }
      }
  }
    eoMonitor& operator()(void);

    eoMonitor& operator()(std::ostream& os);

    void printHeader(void);
    virtual void printHeader(std::ostream& os);
  virtual string getFileName()	   // for eoGnuPlot
  { return filename;}
private :
    std::string filename;
    std::string delim;
  bool keep;			   // should we append or create a new file
};

#endif