LogFile.hpp

00001 /*
00002 
00003 Copyright (C) University of Oxford, 2005-2011
00004 
00005 University of Oxford means the Chancellor, Masters and Scholars of the
00006 University of Oxford, having an administrative office at Wellington
00007 Square, Oxford OX1 2JD, UK.
00008 
00009 This file is part of Chaste.
00010 
00011 Chaste is free software: you can redistribute it and/or modify it
00012 under the terms of the GNU Lesser General Public License as published
00013 by the Free Software Foundation, either version 2.1 of the License, or
00014 (at your option) any later version.
00015 
00016 Chaste is distributed in the hope that it will be useful, but WITHOUT
00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
00019 License for more details. The offer of Chaste under the terms of the
00020 License is subject to the License being interpreted in accordance with
00021 English Law and subject to any action against the University of Oxford
00022 being under the jurisdiction of the English Courts.
00023 
00024 You should have received a copy of the GNU Lesser General Public License
00025 along with Chaste. If not, see <http://www.gnu.org/licenses/>.
00026 
00027 */
00028 
00029 #ifndef LOGFILE_HPP_
00030 #define LOGFILE_HPP_
00031 
00032 #include <string>
00033 #include "OutputFileHandler.hpp"
00034 #include <iostream>
00035 #include <cassert>
00036 #include <iomanip>
00037 #include <ctime>
00038 
00067 class LogFile
00068 {
00069 private:
00070 
00072     static LogFile* mpInstance;
00073 
00075     bool mFileSet;
00076 
00078     out_stream mpOutStream;
00079 
00081     time_t mInitTime;
00082 
00084     unsigned mLevel;
00085 
00087     static const unsigned mMaxLoggingLevel = 2;
00088 
00090     unsigned mPrecision;
00091 
00095     LogFile();
00096 
00097 public:
00098 
00102     static LogFile* Instance();
00103 
00107     static unsigned Level();
00108 
00125     void Set(unsigned level, const std::string& rDirectory, const std::string& rFileName="log.txt");
00126 
00130     static unsigned MaxLoggingLevel();
00131 
00138     void SetPrecision(unsigned precision);
00139 
00147     void WriteHeader(std::string simulationType="");
00148 
00154     void WriteElapsedTime(std::string pre="");
00155 
00159     static void Close();
00160 
00164     bool IsFileSet();
00165 
00172     template <class T>
00173     LogFile& operator<<(T message)
00174     {
00175         if (mFileSet)
00176         {
00177             (*mpOutStream) << std::setprecision((int)mPrecision) << message << std::flush;
00178         }
00179 
00180         return *this;
00181     }
00182 };
00183 
00184 // Define the log macro
00185 #define LOG(level, message) assert(level>0); if(level <= LogFile::Level()) { (*LogFile::Instance()) << message << "\n"; }
00186 #define LOG_AND_COUT(level, message) {std::cout << message << std::endl << std::flush; LOG(level, message); }
00187 
00188 #endif /*LOGFILE_HPP_*/
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