LogFile.hpp

/*
 
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This file is part of Chaste.
 
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   this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice,
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   software without specific prior written permission.
 
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
*/
 
#ifndef LOGFILE_HPP_
#define LOGFILE_HPP_
 
#include <string>
#include "OutputFileHandler.hpp"
#include <iostream>
#include <cassert>
#include <iomanip>
#include <ctime>
 
class LogFile
{
private:
 
    static LogFile* mpInstance;
 
    bool mFileSet;
 
    out_stream mpOutStream;
 
    time_t mInitTime;
 
    unsigned mLevel;
 
    static const unsigned mMaxLoggingLevel = 2;
 
    unsigned mPrecision;
 
    LogFile();
 
public:
 
    static LogFile* Instance();
 
    static unsigned Level();
 
    void Set(unsigned level, const std::string& rDirectory, const std::string& rFileName="log.txt");
 
    static unsigned MaxLoggingLevel();
 
    void SetPrecision(unsigned precision);
 
    void WriteHeader(std::string simulationType="");
 
    void WriteElapsedTime(std::string pre="");
 
    static void Close();
 
    bool IsFileSet();
 
    template <class T>
    LogFile& operator<<(T message)
    {
        if (mFileSet)
        {
            (*mpOutStream) << std::setprecision((int)mPrecision) << message << std::flush;
        }
 
        return *this;
    }
};
 
// Define the log macro
#define LOG(level, message) assert(level>0); if(level <= LogFile::Level()) { (*LogFile::Instance()) << message << "\n"; }
#define LOG_AND_COUT(level, message) {std::cout << message << std::endl << std::flush; LOG(level, message); }
 
#endif /*LOGFILE_HPP_*/