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57 lines
2.6 KiB
Plaintext
57 lines
2.6 KiB
Plaintext
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/**QgsLogger is a class to print debug/warning/error messages to the console. The advantage of this class over std::cout, std::cerr & co. is that the output can be controlled with environment variables:
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QGIS_DEBUG is an int describing what debug messages are written to the console. If the debug level of a message is <= QGIS_DEBUG, the message is written to the console. It the variable QGIS_DEBUG is not defined, it defaults to 1 for debug mode and to 0 for release mode
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QGIS_DEBUG_FILE may contain a file name. Only the messages from this file are printed (provided they have the right debuglevel). If QGIS_DEBUG_FILE is not set, messages from all files are printed
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*/
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class QgsLogger
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{
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%TypeHeaderCode
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#include <qgslogger.h>
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%End
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public:
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/**Goes to qDebug.
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@param msg the message to be printed
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@param debuglevel
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@param file file name where the message comes from
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@param function function where the message comes from
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@param line place in file where the message comes from*/
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static void debug( const QString& msg, int debuglevel = 1, const char* file = NULL, const char* function = NULL, int line = -1 );
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/**Similar to the previous method, but prints a variable int-value pair*/
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static void debug( const QString& var, int val, int debuglevel = 1, const char* file = NULL, const char* function = NULL, int line = -1 );
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/**Similar to the previous method, but prints a variable double-value pair*/
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// @note not available in python bindings
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// static void debug( const QString& var, double val, int debuglevel = 1, const char* file = NULL, const char* function = NULL, int line = -1 );
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/**Prints out a variable/value pair for types with overloaded operator<<*/
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// @note not available in python bindings
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//template <typename T> static void debug(const QString& var, T val, const char* file = 0, const char* function = 0,
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// int line = -1, int debuglevel = 1);
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/**Goes to qWarning*/
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static void warning( const QString& msg );
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/**Goes to qCritical*/
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static void critical( const QString& msg );
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/**Goes to qFatal*/
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static void fatal( const QString& msg );
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/**Reads the environment variable QGIS_DEBUG and converts it to int. If QGIS_DEBUG is not set,
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the function returns 1 if QGISDEBUG is defined and 0 if not*/
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static int debugLevel();
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/** Logs the message passed in to the logfile defined in QGIS_LOG_FILE if any. **/
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static void logMessageToFile( QString theMessage );
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/**Reads the environment variable QGIS_LOG_FILE. Returns NULL if the variable is not set,
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* otherwise returns a file name for writing log messages to.*/
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static const QString logFile();
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};
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