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/******************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Debug Bridge.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
******************************************************************************/
#include "logging.h"
#include <QtCore/qdatetime.h>
#include <QtCore/qdebug.h>
#include <QtCore/qdir.h>
#include <QtCore/qfile.h>
#include <QtCore/qstandardpaths.h>
#include <QtGlobal>
static QFile logFile;
void hostServerMessageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
if (!logFile.isWritable()) {
if (!logFile.open(QFile::WriteOnly | QIODevice::Unbuffered)) {
// Fall back to default handler
qInstallMessageHandler(nullptr);
qCritical() << "Could not open log file" << logFile.fileName();
return;
} else {
QString startMessage{"-- Starting QDB host server log on %1 --\n"};
startMessage = startMessage.arg(QDateTime::currentDateTime().toString(Qt::ISODate));
logFile.write(startMessage.toUtf8());
}
}
QString prefix;
switch (type) {
case QtDebugMsg:
prefix = "D:";
break;
case QtInfoMsg:
prefix = "I:";
break;
case QtWarningMsg:
prefix = "W:";
break;
case QtCriticalMsg:
prefix = "C:";
break;
case QtFatalMsg:
prefix = "F:";
break;
}
const auto message = qFormatLogMessage(type, context, msg);
const auto fullMsg = QString{"%1 %2\n"}.arg(prefix).arg(message).toUtf8();
auto written = logFile.write(fullMsg);
if (written != fullMsg.size()) {
qInstallMessageHandler(nullptr);
qCritical() << "Could not write into log file" << logFile.fileName()
<< ":" << logFile.errorString();
}
if (type == QtFatalMsg)
abort();
}
void setupLogging()
{
if (qgetenv("QDB_LOGGING_TO_CONSOLE") != "1") {
auto dataLocation = QStandardPaths::writableLocation(QStandardPaths::AppDataLocation);
if (!dataLocation.isEmpty()) {
QDir dataDir{dataLocation};
bool dirAvailable;
if (dataDir.exists())
dirAvailable = true;
else
dirAvailable = dataDir.mkpath(".");
if (dirAvailable) {
logFile.setFileName(dataLocation + "/qdb.log");
qInstallMessageHandler(hostServerMessageHandler);
} else {
qWarning() << "Application data location" << dataLocation
<< "was not possible to log in, logging to console";
}
} else {
qWarning() << "Could not find writable application data location, logging to console";
}
}
}
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