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+// 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.
+
+#include "QsLog.h"
+#include "QsLogDest.h"
+#include <QMutex>
+#include <QList>
+#include <QDateTime>
+#include <QtGlobal>
+#include <cassert>
+#include <cstdlib>
+#include <stdexcept>
+
+namespace QsLogging
+{
+typedef QList<Destination *> DestinationList;
+
+static const char *LevelStrings[] = {"TRACE", "DEBUG", "INFO", "WARN", "ERROR", "FATAL"
+ "UNKNOWN"};
+
+// not using Qt::ISODate because we need the milliseconds too
+static const QString fmtDateTime("hhhh:mm:ss.zzz");
+
+static const char *LevelToText(Level theLevel)
+{
+ if (theLevel > FatalLevel)
+ {
+ assert(!"bad log level");
+ return LevelStrings[UnknownLevel];
+ }
+ return LevelStrings[theLevel];
+}
+
+class LoggerImpl
+{
+public:
+ LoggerImpl() : level(InfoLevel)
+ {
+ }
+ QMutex logMutex;
+ Level level;
+ DestinationList destList;
+};
+
+Logger::Logger() : d(new LoggerImpl)
+{
+}
+
+Logger::~Logger()
+{
+ delete d;
+}
+
+void Logger::addDestination(Destination *destination)
+{
+ assert(destination);
+ d->destList.push_back(destination);
+}
+
+void Logger::setLoggingLevel(Level newLevel)
+{
+ d->level = newLevel;
+}
+
+Level Logger::loggingLevel() const
+{
+ return d->level;
+}
+
+//! creates the complete log message and passes it to the logger
+void Logger::Helper::writeToLog()
+{
+ const char *const levelName = LevelToText(level);
+ const QString completeMessage(QString("%1\t%2").arg(levelName, 5).arg(buffer));
+
+ Logger &logger = Logger::instance();
+ QMutexLocker lock(&logger.d->logMutex);
+ logger.write(completeMessage);
+}
+
+Logger::Helper::Helper(Level logLevel) : level(logLevel), qtDebug(&buffer)
+{
+}
+
+Logger::Helper::~Helper()
+{
+ try
+ {
+ writeToLog();
+ }
+ catch (std::exception &e)
+ {
+ // you shouldn't throw exceptions from a sink
+ Q_UNUSED(e);
+ assert(!"exception in logger helper destructor");
+ throw;
+ }
+}
+
+//! sends the message to all the destinations
+void Logger::write(const QString &message)
+{
+ for (DestinationList::iterator it = d->destList.begin(), endIt = d->destList.end();
+ it != endIt; ++it)
+ {
+ if (!(*it))
+ {
+ assert(!"null log destination");
+ continue;
+ }
+ (*it)->write(message);
+ }
+}
+
+} // end namespace