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C++ API DOCUMENTATION |
00001 /***************************************************************************** 00002 * 00003 * This file is part of Mapnik (c++ mapping toolkit) 00004 * 00005 * Copyright (C) 2006 Artem Pavlenko 00006 * 00007 * This library is free software; you can redistribute it and/or 00008 * modify it under the terms of the GNU Lesser General Public 00009 * License as published by the Free Software Foundation; either 00010 * version 2.1 of the License, or (at your option) any later version. 00011 * 00012 * This library is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 * Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with this library; if not, write to the Free Software 00019 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00020 * 00021 *****************************************************************************/ 00022 00023 #ifndef MAPNIK_CONFIG_ERROR_INCLUDED 00024 #define MAPNIK_CONFIG_ERROR_INCLUDED 00025 00026 #include <iostream> 00027 #include <sstream> 00028 00029 namespace mapnik { 00030 00031 class config_error : public std::exception 00032 { 00033 public: 00034 config_error() {} 00035 00036 config_error( const std::string & what ) : 00037 what_( what ) 00038 { 00039 } 00040 virtual ~config_error() throw() {}; 00041 00042 virtual const char * what() const throw() 00043 { 00044 return what_.c_str(); 00045 } 00046 00047 void append_context(const std::string & ctx) const 00048 { 00049 what_ += " " + ctx; 00050 } 00051 00052 protected: 00053 mutable std::string what_; 00054 }; 00055 } 00056 00057 #endif // MAPNIK_CONFIG_ERROR_INCLUDED