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/*
* Logger.h - a global clas for easily logging messages to log files
*
* Copyright (c) 2010-2013 Tobias Doerffel <tobydox/at/users/dot/sf/dot/net>
*
* This file is part of iTALC - http://italc.sourceforge.net
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#ifndef ITALCCORE_LOGGER_H
#define ITALCCORE_LOGGER_H
#include <italcconfig.h>
#include <QtCore/QDebug>
#include <QtCore/QTextStream>
#include <QtCore/QMutex>
class QFile;
class CXEventLog;
class Logger
{
public:
enum LogLevels
{
LogLevelNothing,
LogLevelCritical,
LogLevelError,
LogLevelWarning,
LogLevelInfo,
LogLevelDebug,
NumLogLevels,
LogLevelMin = LogLevelNothing+1,
LogLevelMax = NumLogLevels-1,
LogLevelDefault = LogLevelInfo
} ;
typedef LogLevels LogLevel;
Logger( const QString &appName );
~Logger();
static void log( LogLevel ll, const QString &msg );
static void log( LogLevel ll, const char *format, ... );
private:
void initLogFile();
void outputMessage( const QString &msg );
static QString formatMessage( LogLevel ll, const QString &msg );
static void qtMsgHandler( QtMsgType msgType, const char *msg );
static LogLevel logLevel;
static Logger *instance;
static QMutex logMutex;
static LogLevel lastMsgLevel;
static QString lastMsg;
static int lastMsgCount;
QString m_appName;
#ifdef ITALC_BUILD_WIN32
static CXEventLog *winEventLog;
#endif
QFile *m_logFile;
} ;
#define ilog(ll, msg) Logger::log(Logger::LogLevel##ll, msg )
#define ilogf(ll, format, ...) Logger::log(Logger::LogLevel##ll, format, __VA_ARGS__)
#define ilog_failed(what) ilogf( Warning, "%s: %s failed", __PRETTY_FUNCTION__, what )
#define ilog_failedf(what, format, ...) ilogf( Warning, "%s: %s failed: " format, __PRETTY_FUNCTION__, what, __VA_ARGS__ )
// helper class for easily streaming Qt datatypes into logfiles
class LogStream : public QTextStream
{
public:
LogStream( Logger::LogLevel ll = Logger::LogLevelInfo ) :
QTextStream(),
m_logLevel( ll ),
m_out()
{
setString( &m_out );
}
~LogStream()
{
flush();
Logger::log( m_logLevel, m_out );
}
// allows to stream advanced data types such as lists, maps etc. by
// using QDebug's stream operator
template<class QDEBUG_STREAMABLE>
LogStream &operator<<( const QDEBUG_STREAMABLE &s )
{
QDebug( &m_out ) << s;
return *this;
}
private:
Logger::LogLevel m_logLevel;
QString m_out;
} ;
#endif
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