TheBESKeys.cc

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00001 // TheBESKeys.cc
00002 
00003 // This file is part of bes, A C++ back-end server implementation framework
00004 // for the OPeNDAP Data Access Protocol.
00005 
00006 // Copyright (c) 2004,2005 University Corporation for Atmospheric Research
00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
00008 //
00009 // This library is free software; you can redistribute it and/or
00010 // modify it under the terms of the GNU Lesser General Public
00011 // License as published by the Free Software Foundation; either
00012 // version 2.1 of the License, or (at your option) any later version.
00013 // 
00014 // This library is distributed in the hope that it will be useful,
00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 // Lesser General Public License for more details.
00018 // 
00019 // You should have received a copy of the GNU Lesser General Public
00020 // License along with this library; if not, write to the Free Software
00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00022 //
00023 // You can contact University Corporation for Atmospheric Research at
00024 // 3080 Center Green Drive, Boulder, CO 80301
00025 
00026 // (c) COPYRIGHT University Corporation for Atmostpheric Research 2004-2005
00027 // Please read the full copyright statement in the file COPYRIGHT_UCAR.
00028 //
00029 // Authors:
00030 //      pwest       Patrick West <pwest@ucar.edu>
00031 //      jgarcia     Jose Garcia <jgarcia@ucar.edu>
00032 
00033 #include "TheBESKeys.h"
00034 #include "BESKeysException.h"
00035 #include "config.h"
00036 
00037 #define BES_CONF getenv("BES_CONF")
00038 
00039 BESKeys *TheBESKeys::_instance = 0;
00040 string TheBESKeys::ConfigFile = "";
00041 
00042 BESKeys *TheBESKeys::TheKeys()
00043 {
00044     if (_instance == 0) {
00045         string use_ini = TheBESKeys::ConfigFile;
00046         if (use_ini == "") {
00047             char *ini_file = BES_CONF;
00048             if (!ini_file) {
00049                 ini_file = BES_CONF_DIR;
00050                 if (!ini_file) {
00051                     string s = "Can not load environment variable BES_CONF";
00052                     throw BESKeysException(s, __FILE__, __LINE__);
00053                 } else {
00054                     use_ini = (string) ini_file + "/bes.conf";
00055                 }
00056             } else {
00057                 use_ini = ini_file;
00058             }
00059         }
00060         _instance = new TheBESKeys(use_ini);
00061     }
00062     return _instance;
00063 }

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