UDP/logger.cpp

#include "logger.h"

#include <QDateTime>
#include <QDir>
#include <QObject>

QFile* Logger::_logFile = Q_NULLPTR;

QHash<QtMsgType, QString> Logger::_logTitles = {
    {QtMsgType::QtDebugMsg, " Debug  "},
    {QtMsgType::QtInfoMsg, "  Info  "},
    {QtMsgType::QtWarningMsg, "Warning "},
    {QtMsgType::QtCriticalMsg, "Critical"},
    {QtMsgType::QtFatalMsg, " Fatal  "}
};

Logger::Logger(QString fileName)
{
    _logFile = new QFile;
    _logFile->setFileName(fileName);
    _logFile->open(QIODevice::Append | QIODevice::Text);
    qInstallMessageHandler(Logger::messageOutput);
}

Logger::~Logger()
{
    qInfo() << "The Logger closed" << "\n";
    delete _logFile;
}

void Logger::clearLog()
{
    if(_logFile)
    {
        _logFile->resize(0);
    }
}

void Logger::makeStartingLine()
{
    if(_logFile)
    {
        _logFile->write(
            "**************************************************************************************\n");
        _logFile->flush();
    }
}

void Logger::messageOutput(QtMsgType type, const QMessageLogContext& context, const QString& msg)
{
    QString log = QObject::tr("%1 | %2 | %3 | %4 | %5\n").
                  arg(QDateTime::currentDateTime().toString("yyyy/MM/dd - hh:mm:ss")).
                  arg(Logger::_logTitles.value(type)).
                  arg(context.line).
                  arg(QString(context.function).section('(', -2, -2). //Function name only
                      section(' ', -1).
                      section(':', -1)).
                  arg(msg);

    _logFile->write(log.toLocal8Bit());
    _logFile->flush();
}