Function outputMessage

QKeyMapper/main.cpp:25–71

static QMutex *logfile_mutex = Q_NULLPTR;
void outputMessage(QtMsgType type, const QMessageLogContext &context, const QString &msg);
void outputMessage(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
    Q_UNUSED(context)
    logfile_mutex->lock();

    QString level;
    switch(type)
    {
    case QtDebugMsg:
        level = QString("[D]");
        break;

    case QtInfoMsg:
        level = QString("[I]");
        break;

    case QtWarningMsg:
        level = QString("[W]");
        break;

    case QtCriticalMsg:
        level = QString("[E]");
        break;

    case QtFatalMsg:
        level = QString("[F]");
    }

//    QString context_info = QString("File:(%1) Line:(%2)").arg(QString(context.file)).arg(context.line);
    QString current_date_time = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss.zzz");
    QString current_date = QString("[%1]").arg(current_date_time);
    QString message = QString("%1%2 %3").arg(current_date).arg(level).arg(msg);

    QFile file("log.txt");
    file.open(QIODevice::WriteOnly | QIODevice::Append);
    QTextStream text_stream(&file);
    text_stream << message << "\r\n";
    file.flush();
    file.close();

#ifdef QT_NO_DEBUG
#else
    fprintf(stderr, "%s\n", message.toLocal8Bit().constData());
#endif

    logfile_mutex->unlock();
}
#endif

#if 0