Qt 日志宏

随便写了一个日志帮助的宏，既可以如同qDebug（）一般在调试时输出信息，也可以在输出文本文件

#ifndef LOG_H
#define LOG_H

#include <QDir>
#include <QFile>
#include <QString>
#include <QDebug>
#include <QDate>
#include <QTime>
#include <QDateTime>
#include <QTextStream>

#define WRITE_LOG_FILE(type,msg)(
{QString err;
    switch(type){
        case QtDebugMsg:{err = "调试信息：";}break;
        case QtWarningMsg:{err = "警告信息：";}break;
        case QtCriticalMsg:{err = "严重错误：";}break;
        case QtFatalMsg:{err = "致命错误：";}break;
        default:{err = "常规信息：";}break;}
    QString text = QString("%1
 所在文件：%2 
 所在位置：%3 
 记录时间：%4 
 记录信息：%5 
").arg (err).arg (__FILE__).arg (__LINE__).arg (QDateTime::currentDateTime ().toString ("yyyy-MM-dd hh:mm:ss ddd")).arg (msg);qDebug() << text;
    QDir dir;
    QString path = dir.currentPath () + "\log\";
    QDateTime dt = QDateTime::currentDateTime ();
    QTime t = dt.time ();
    QDate d = dt.date ();
    QString name = QString("%1%2%3%4").arg (QString::number (d.year ())).arg (QString::number (d.month ())).arg (QString::number (d.day ())).arg (QString::number (t.hour ())) + QString(".txt");
    QString filePath = path + name;
    if(!dir.exists(path))
    {
        dir.mkpath(path);
    }
    QFile file(filePath);
    if(!file.exists ())
    {
        file.open (QIODevice::WriteOnly);
        file.close ();
    }
    if(file.open(QIODevice::WriteOnly | QIODevice::Append))
    {
        QTextStream stream(&file);
        stream << text << "
";
        file.flush();file.close();
    }
})
#define DEBUG_LOG(msg)(WRITE_LOG_FILE(QtDebugMsg,msg))
#define WARNING_LOG(msg)(WRITE_LOG_FILE(QtWarningMsg,msg))
#define CRITICAL_LOG(msg)(WRITE_LOG_FILE(QtCriticalMsg,msg))
#define FATAL_LOG(msg)(WRITE_LOG_FILE(QtFatalMsg,msg))
#define LOG(msg)(WRITE_LOG_FILE(-1,msg))

#endif // LOG_H