QGIS API Documentation  3.20.0-Odense (decaadbb31)
qgslogger.h
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1 /***************************************************************************
2  qgslogger.h - description
3  -------------------
4  begin : April 2006
5  copyright : (C) 2006 by Marco Hugentobler
6  email : marco.hugentobler at karto dot baug dot ethz dot ch
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSLOGGER_H
19 #define QGSLOGGER_H
20 
21 #include <iostream>
22 #include "qgis_sip.h"
23 #include <sstream>
24 #include <QString>
25 #include <QTime>
26 
27 #include "qgis_core.h"
28 #include "qgsconfig.h"
29 
30 class QFile;
31 
32 #ifdef QGISDEBUG
33 #define QgsDebugMsg(str) QgsLogger::debug(QString(str), 1, __FILE__, __FUNCTION__, __LINE__)
34 #define QgsDebugMsgLevel(str, level) if ( level <= QgsLogger::debugLevel() ) { QgsLogger::debug(QString(str), (level), __FILE__, __FUNCTION__, __LINE__); }(void)(0)
35 #define QgsDebugCall QgsScopeLogger _qgsScopeLogger(__FILE__, __FUNCTION__, __LINE__)
36 #else
37 #define QgsDebugCall do {} while(false)
38 #define QgsDebugMsg(str) do {} while(false)
39 #define QgsDebugMsgLevel(str, level) do {} while(false)
40 #endif
41 
60 class CORE_EXPORT QgsLogger
61 {
62  public:
63 
72  static void debug( const QString &msg, int debuglevel = 1, const char *file = nullptr, const char *function = nullptr, int line = -1 );
73 
75  static void debug( const QString &var, int val, int debuglevel = 1, const char *file = nullptr, const char *function = nullptr, int line = -1 );
76 
81  static void debug( const QString &var, double val, int debuglevel = 1, const char *file = nullptr, const char *function = nullptr, int line = -1 ) SIP_SKIP SIP_SKIP;
82 
87  template <typename T> static void debug( const QString &var, T val, const char *file = nullptr, const char *function = nullptr,
88  int line = -1, int debuglevel = 1 ) SIP_SKIP SIP_SKIP
89  {
90  std::ostringstream os;
91  os << var.toLocal8Bit().data() << " = " << val;
92  debug( var, os.str().c_str(), file, function, line, debuglevel );
93  }
94 
96  static void warning( const QString &msg );
97 
99  static void critical( const QString &msg );
100 
102  static void fatal( const QString &msg );
103 
108  static int debugLevel()
109  {
110  if ( sDebugLevel == -999 )
111  init();
112  return sDebugLevel;
113  }
114 
116  static void logMessageToFile( const QString &message );
117 
122  static QString logFile();
123 
124  private:
125  static void init();
126 
128  static int sDebugLevel;
129  static int sPrefixLength;
130 };
131 
135 class CORE_EXPORT QgsScopeLogger // clazy:exclude=rule-of-three
136 {
137  public:
138  QgsScopeLogger( const char *file, const char *func, int line )
139  : _file( file )
140  , _func( func )
141  , _line( line )
142  {
143  QgsLogger::debug( QStringLiteral( "Entering." ), 2, _file, _func, _line );
144  }
146  {
147  QgsLogger::debug( QStringLiteral( "Leaving." ), 2, _file, _func, _line );
148  }
149  private:
150  const char *_file = nullptr;
151  const char *_func = nullptr;
152  int _line;
153 };
154 
155 #endif
QgsLogger is a class to print debug/warning/error messages to the console.
Definition: qgslogger.h:61
static void debug(const QString &msg, int debuglevel=1, const char *file=nullptr, const char *function=nullptr, int line=-1)
Goes to qDebug.
Definition: qgslogger.cpp:58
static void debug(const QString &var, T val, const char *file=nullptr, const char *function=nullptr, int line=-1, int debuglevel=1)
Prints out a variable/value pair for types with overloaded operator<<.
Definition: qgslogger.h:87
static int debugLevel()
Reads the environment variable QGIS_DEBUG and converts it to int.
Definition: qgslogger.h:108
QgsScopeLogger(const char *file, const char *func, int line)
Definition: qgslogger.h:138
#define SIP_SKIP
Definition: qgis_sip.h:126