1 // metarairportfilter.cxx -- Implementation of AirportFilter
3 // Written by Torsten Dreyer, August 2010
5 // Copyright (C) 2010 Torsten Dreyer Torsten(at)t3r(dot)de
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
26 #include "metarairportfilter.hxx"
28 namespace Environment {
30 MetarAirportFilter * MetarAirportFilter::_instance = NULL;
32 MetarAirportFilter * MetarAirportFilter::instance()
34 return _instance != NULL ? _instance :
35 (_instance = new MetarAirportFilter());
38 } // namespace Environment