105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
#pragma once
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#include <filesystem>
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#include <string>
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#include <vector>
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#include <cstddef>
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#include <QDateTime>
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#include <QFile>
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#include <QMessageLogger>
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#include <QString>
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#include <QTextStream>
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static inline void rotateLog(const std::filesystem::path& logFileName, int numRotatingLogs)
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{
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const auto generateRotateNames = [&]() {
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std::vector<QString> rotateFileNames = {QString().fromStdString(logFileName.string())};
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for(int i = 1; i < numRotatingLogs; ++i) {
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auto rotateName = logFileName.stem();
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rotateName += std::string(".") + std::to_string(i);
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rotateName += logFileName.extension();
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rotateFileNames.push_back(QString().fromStdString(rotateName.string()));
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}
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return rotateFileNames;
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};
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const auto rotateFileNames = generateRotateNames();
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for(auto i = static_cast<int>(rotateFileNames.size()) - 2; i >= 0; --i) {
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QFile file(rotateFileNames[i]);
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QFile newFile(rotateFileNames[i + 1]);
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if(file.exists()) {
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newFile.remove();
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file.rename(rotateFileNames[i + 1]);
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}
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}
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}
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void logToFile(QtMsgType msgType, [[maybe_unused]] const QMessageLogContext& msgContext, const QString& msg)
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{
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constexpr auto MAX_LOG_FILE_SIZE = 4 /*MiB*/ * 1024 * 1024;
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constexpr auto NUM_ROTATING_LOGS = 4;
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const auto logFileName = std::filesystem::path{"AdaptiveBrightness.log"};
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const auto dateTime = QDateTime::currentDateTime().toString("yyyy-MM-dd hh:mm:ss.zzz");
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QString formattedMsg = QString("[%1] ").arg(dateTime);
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switch(msgType) {
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case QtDebugMsg:
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formattedMsg += "[Debug] ";
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break;
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case QtWarningMsg:
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formattedMsg += "[Warning] ";
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break;
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case QtCriticalMsg:
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formattedMsg += "[Critical] ";
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break;
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case QtFatalMsg:
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formattedMsg += "[Fatal] ";
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break;
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case QtInfoMsg:
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formattedMsg += "[Info] ";
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break;
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}
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#ifdef LOG_SOURCE_LOCATION
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const auto msgFromFile = QString(msgContext.file);
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const auto msgFromLine = (msgContext.line == 0) ? QString("") : QString("%1").arg(msgContext.line);
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if(!msgFromFile.isEmpty() && !msgFromLine.isEmpty()) {
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formattedMsg += QString("[%1:%2] ").arg(msgContext.file).arg(msgContext.line);
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}
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#endif
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#ifdef LOG_FUNCTION_LOCATION
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const auto msgFromFunction = QString(msgContext.function);
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if(!msgFromFunction.isEmpty()) {
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formattedMsg += QString("[%1] ").arg(msgContext.function);
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}
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#endif
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formattedMsg += QString("%1").arg(msg);
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QFile logFile(QString().fromStdString(logFileName.string()));
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logFile.open(QIODevice::WriteOnly | QIODevice::Append);
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if(logFile.size() > MAX_LOG_FILE_SIZE) {
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logFile.close();
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rotateLog(logFileName, NUM_ROTATING_LOGS);
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logFile.open(QIODevice::WriteOnly | QIODevice::Append);
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}
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#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
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constexpr auto qtEndl = Qt::endl;
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#else
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constexpr auto qtEndl = ::endl;
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#endif
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QTextStream textStream(&logFile);
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textStream << formattedMsg << qtEndl;
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}
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