Quantum GIS API Documentation  1.8
src/core/qgslogger.h
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00001 /***************************************************************************
00002                          qgslogger.h  -  description
00003                              -------------------
00004     begin                : April 2006
00005     copyright            : (C) 2006 by Marco Hugentobler
00006     email                : marco.hugentobler at karto dot baug dot ethz dot ch
00007  ***************************************************************************/
00008 
00009 /***************************************************************************
00010  *                                                                         *
00011  *   This program is free software; you can redistribute it and/or modify  *
00012  *   it under the terms of the GNU General Public License as published by  *
00013  *   the Free Software Foundation; either version 2 of the License, or     *
00014  *   (at your option) any later version.                                   *
00015  *                                                                         *
00016  ***************************************************************************/
00017 
00018 #ifndef QGSLOGGER_H
00019 #define QGSLOGGER_H
00020 
00021 #include <iostream>
00022 #include <sstream>
00023 #include <QString>
00024 class QFile;
00025 
00026 #ifdef QGISDEBUG
00027 #define QgsDebugMsg(str) QgsLogger::debug(QString(str), 1, __FILE__, __FUNCTION__, __LINE__)
00028 #define QgsDebugMsgLevel(str, level) \
00029   { \
00030     if ( QgsLogger::debugLevel() >= (level) && (level) > 0 ) \
00031       QgsLogger::debug(QString(str), (level), __FILE__, __FUNCTION__, __LINE__); \
00032   }
00033 #else
00034 #define QgsDebugMsg(str)
00035 #define QgsDebugMsgLevel(str, level)
00036 #endif
00037 
00054 class CORE_EXPORT QgsLogger
00055 {
00056   public:
00057 
00064     static void debug( const QString& msg, int debuglevel = 1, const char* file = NULL, const char* function = NULL, int line = -1 );
00065 
00067     static void debug( const QString& var, int val, int debuglevel = 1, const char* file = NULL, const char* function = NULL, int line = -1 );
00068 
00070     static void debug( const QString& var, double val, int debuglevel = 1, const char* file = NULL, const char* function = NULL, int line = -1 );
00071 
00073     template <typename T> static void debug( const QString& var, T val, const char* file = 0, const char* function = 0,
00074         int line = -1, int debuglevel = 1 )
00075     {
00076       Q_UNUSED( debuglevel );
00077       const char* dfile = debugFile();
00078       if ( dfile ) //exit if QGIS_DEBUG_FILE is set and the message comes from the wrong file
00079       {
00080         if ( !file || strcmp( dfile, file ) != 0 )
00081         {
00082           return;
00083         }
00084       }
00085       std::ostringstream os;
00086       os << var.toLocal8Bit().data() << " = " << val;
00087       if ( line == -1 )
00088       {
00089         qDebug( "%s: (%s) %s", file + sPrefixLength, function, os.str().c_str() );
00090       }
00091       else
00092       {
00093 #if defined(_MSC_VER)
00094         qDebug( "%s(%d): (%s) %s", file + sPrefixLength, line, function, os.str().c_str() );
00095 #else
00096         qDebug( "%s: %d: (%s) %s", file + sPrefixLength, line, function, os.str().c_str() );
00097 #endif
00098       }
00099     }
00100 
00102     static void warning( const QString& msg );
00103 
00105     static void critical( const QString& msg );
00106 
00108     static void fatal( const QString& msg );
00109 
00112     static int debugLevel();
00113 
00115     static void logMessageToFile( QString theMessage );
00116 
00117   private:
00120     static const QString logFile();
00121 
00124     static const char* debugFile();
00125 
00127     static int sDebugLevel;
00128     static int sPrefixLength;
00129 };
00130 
00131 #endif
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