metarairportfilter.cxx

Go to the documentation of this file.

// metarairportfilter.cxx -- Implementation of AirportFilter
//
// Written by Torsten Dreyer, August 2010
//
// Copyright (C) 2010  Torsten Dreyer Torsten(at)t3r(dot)de
//
// This program 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.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
 
#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif
 
#include "metarairportfilter.hxx"
 
namespace Environment {
 
MetarAirportFilter * MetarAirportFilter::_instance = NULL;
 
MetarAirportFilter * MetarAirportFilter::instance()
{
  return _instance != NULL ? _instance :
    (_instance = new MetarAirportFilter());
}
 
} // namespace Environment