sneedmc/logger/QsLog.h

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2013-10-05 23:13:40 +00:00
// Copyright (c) 2010, Razvan Petru
// All rights reserved.
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice, this
// list of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
// * The name of the contributors may not be used to endorse or promote products
// derived from this software without specific prior written permission.
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
// OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
#pragma once
#include <QDebug>
#include <QString>
namespace QsLogging
{
class Destination;
enum Level
{
TraceLevel = 0,
DebugLevel,
InfoLevel,
WarnLevel,
ErrorLevel,
FatalLevel,
UnknownLevel
};
class LoggerImpl; // d pointer
class Logger
{
public:
static Logger &instance()
{
static Logger staticLog;
return staticLog;
}
//! Adds a log message destination. Don't add null destinations.
void addDestination(Destination *destination);
//! Removes the given destination from the logger.
void removeDestination(Destination* destination);
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//! Logging at a level < 'newLevel' will be ignored
void setLoggingLevel(Level newLevel);
//! The default level is INFO
Level loggingLevel() const;
//! The helper forwards the streaming to QDebug and builds the final
//! log message.
class Helper
{
public:
explicit Helper(Level logLevel);
~Helper();
QDebug &stream()
{
return qtDebug;
}
private:
void writeToLog();
Level level;
QString buffer;
QDebug qtDebug;
};
private:
Logger();
Logger(const Logger &);
Logger &operator=(const Logger &);
~Logger();
void write(const QString &message);
LoggerImpl *d;
};
} // end namespace
#define QLOG_TRACE() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::TraceLevel) \
QsLogging::Logger::Helper(QsLogging::TraceLevel).stream()
#define QLOG_DEBUG() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::DebugLevel) \
QsLogging::Logger::Helper(QsLogging::DebugLevel).stream()
#define QLOG_INFO() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::InfoLevel) \
QsLogging::Logger::Helper(QsLogging::InfoLevel).stream()
#define QLOG_WARN() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::WarnLevel) \
QsLogging::Logger::Helper(QsLogging::WarnLevel).stream()
#define QLOG_ERROR() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::ErrorLevel) \
QsLogging::Logger::Helper(QsLogging::ErrorLevel).stream()
#define QLOG_FATAL() QsLogging::Logger::Helper(QsLogging::FatalLevel).stream()
/*
#define QLOG_TRACE() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::TraceLevel) \
QsLogging::Logger::Helper(QsLogging::TraceLevel).stream() << __FILE__ << '@' << __LINE__
#define QLOG_DEBUG() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::DebugLevel) \
QsLogging::Logger::Helper(QsLogging::DebugLevel).stream() << __FILE__ << '@' << __LINE__
#define QLOG_INFO() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::InfoLevel) \
QsLogging::Logger::Helper(QsLogging::InfoLevel).stream() << __FILE__ << '@' << __LINE__
#define QLOG_WARN() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::WarnLevel) \
QsLogging::Logger::Helper(QsLogging::WarnLevel).stream() << __FILE__ << '@' << __LINE__
#define QLOG_ERROR() \
if (QsLogging::Logger::instance().loggingLevel() <= QsLogging::ErrorLevel) \
QsLogging::Logger::Helper(QsLogging::ErrorLevel).stream() << __FILE__ << '@' << __LINE__
#define QLOG_FATAL() \
QsLogging::Logger::Helper(QsLogging::FatalLevel).stream() << __FILE__ << '@' << __LINE__
*/