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logger.hpp

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00001 /*
00002   CLAW - a C++ Library Absolutely Wonderful
00003 
00004   CLAW is a free library without any particular aim but being useful to 
00005   anyone.
00006 
00007   Copyright (C) 2005-2010 Julien Jorge
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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00022 
00023   contact: julien_jorge@yahoo.fr
00024 */
00030 #ifndef __CLAW_LOGGER_HPP__
00031 #define __CLAW_LOGGER_HPP__
00032 
00033 #include <ostream>
00034 #include <list>
00035 #include <string>
00036 
00037 #include <claw/log_level.hpp>
00038 #include <claw/log_stream.hpp>
00039 
00040 #ifndef CLAW_LOGGER_EXPORT
00041 #  ifdef CLAW_LOGGER_NO_EXPORT
00042 #    define CLAW_LOGGER_EXPORT
00043 #  else
00044 #    ifdef _WIN32
00045 #      ifdef claw_logger_EXPORTS
00046 #        define CLAW_LOGGER_EXPORT __declspec(dllexport)
00047 #      else
00048 #        define CLAW_LOGGER_EXPORT __declspec(dllimport)
00049 #      endif // def claw_logger_EXPORTS
00050 #    else // def _WIN32
00051 #      define CLAW_LOGGER_EXPORT
00052 #    endif // def _WIN32
00053 #  endif // def CLAW_LOGGER_NO_EXPORT
00054 #endif // ndef CLAW_LOGGER_EXPORT
00055 
00056 namespace claw
00057 {
00071   class log_system
00072   {
00073   public:
00074     typedef log_stream stream_type;
00075     typedef std::list<stream_type*> stream_list_type;
00076 
00077   public:
00078     CLAW_LOGGER_EXPORT log_system();
00079     CLAW_LOGGER_EXPORT ~log_system();
00080     CLAW_LOGGER_EXPORT void clear();
00081 
00082     CLAW_LOGGER_EXPORT void merge( stream_type* s );
00083     CLAW_LOGGER_EXPORT void remove( const stream_type* s );
00084     CLAW_LOGGER_EXPORT void set( stream_type* s );
00085     CLAW_LOGGER_EXPORT void set_level( int lvl );
00086     CLAW_LOGGER_EXPORT void set_level( const log_level& lvl );
00087 
00088     CLAW_LOGGER_EXPORT void flush();
00089 
00090     template<typename T>
00091     log_system& operator<<( const T& that );
00092 
00093     CLAW_LOGGER_EXPORT log_system& operator<<( const log_level& that );
00094     CLAW_LOGGER_EXPORT log_system& operator<<( log_system& (*pf)(log_system&) );
00095 
00096   private:
00099     int m_log_level;
00100 
00102     int m_message_level;
00103 
00105     stream_list_type m_stream;
00106 
00107   }; // class log_system
00108 
00109   CLAW_LOGGER_EXPORT extern log_system logger;
00110 
00111   CLAW_LOGGER_EXPORT log_system& lendl(log_system& log);
00112 
00113 } // namespace claw
00114 
00115 namespace std
00116 {
00117   CLAW_LOGGER_EXPORT claw::log_system& endl( claw::log_system& log );
00118 } // namespace std
00119 
00120 // template methods
00121 #include <claw/impl/logger.tpp>
00122 
00123 #endif // __CLAW_LOGGER_HPP__

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