qt support
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027f901dbe
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51
Log.cpp
51
Log.cpp
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@ -10,8 +10,29 @@
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#include <mutex>
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#endif
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#if LOG_ENABLEQT == 1
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#include <QString>
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#endif
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namespace Log {
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#if LOG_ENABLEQT == 1
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void qtMessageHandler(QtMsgType type, const QMessageLogContext& context, const QString& message) {
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// convert type to Log::Level
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Log::Level lvl = Log::Level::off;
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switch(type) {
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case QtDebugMsg: lvl = Log::Level::debug; break;
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case QtInfoMsg: lvl = Log::Level::info; break;
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case QtWarningMsg: lvl = Log::Level::warn; break;
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case QtCriticalMsg: lvl = Log::Level::error; break;
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case QtFatalMsg: lvl = Log::Level::fatal; break;
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}
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Entry(lvl, context) << message.toStdString();
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}
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#endif
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/*
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* abstract class Output
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* default implementations
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@ -147,6 +168,13 @@ void log(Level lvl, std::stringbuf* strb) {
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/*
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* class Entry
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*/
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#if LOG_ENABLEQT == 1
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Entry::Entry(Level lvl, const QMessageLogContext& context) : lvl{lvl}, context{&context} {
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for(const auto& metafunc : entryMetaFunctions) {
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metafunc(ss, *this);
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}
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}
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#endif
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Entry::Entry(Level lvl) : lvl{lvl} {
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for(const auto& metafunc : entryMetaFunctions) {
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@ -182,6 +210,16 @@ std::ostream& defaultEntryMetaLevel(std::ostream& os, const Entry& e) {
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return os << LevelTag[static_cast<int>(e.getLevel())];
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}
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#if LOG_ENABLEQT == 1
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std::ostream& defaultEntryMetaQtContext(std::ostream& os, const Entry& e) {
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if (e.getContext() && e.getContext()->file) {
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const std::string file = e.getContext()->file;
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return os << file << ':' << e.getContext()->line;
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}
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return os << "-:-";
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}
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#endif
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void init() {
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// add default console logger
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if (outputs.empty()) {
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@ -196,11 +234,24 @@ void init() {
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entryMetaFunctions = {
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defaultEntryMetaTime,
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defaultEntryMetaLevel,
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#if LOG_ENABLEQT == 1
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space,
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defaultEntryMetaQtContext,
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#endif
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space
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};
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#if LOG_ENABLEQT == 1
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qInstallMessageHandler( &Log::qtMessageHandler );
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#endif
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}
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void stop() {
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#if LOG_ENABLEQT == 1
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qInstallMessageHandler( nullptr );
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#endif
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outputs.clear();
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}
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47
Log.h
47
Log.h
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@ -9,9 +9,45 @@
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#define LOG_USEMUTEX 0
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#endif
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#ifndef LOG_ENABLEQT
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#define LOG_ENABLEQT 0
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#endif
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#if LOG_ENABLEQT == 1
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#include <QMessageLogContext>
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#include <QDebug>
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#endif
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#if LOG_ENABLEQT == 1
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template<typename T>
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QDebug operator<<(QDebug dbg, const T& str) {
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std::ostringstream stream;
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stream << str;
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QString conv = QString::fromStdString(stream.str());
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QDebugStateSaver saver(dbg);
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dbg << conv;
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return dbg;
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}
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/*
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// string specialisation, not allowed, because multiple definitions of the same operator are not allowed
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template<>
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QDebug operator<<(QDebug dbg, const std::string& str) {
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QDebugStateSaver saver(dbg);
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QString conv = QString::fromStdString(str);
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dbg << conv;
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return dbg;
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}
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*/
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#endif
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namespace Log {
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enum class Level { off = 0, fatal, error, warn, note, info, debug, trace };
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#if LOG_ENABLEQT == 1
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void qtMessageHandler(QtMsgType type, const QMessageLogContext& context, const QString& message);
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#endif
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// set up the logger with a ConsoleOutput
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void init();
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// close all output streams
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@ -30,6 +66,11 @@ class Entry {
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private:
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std::stringstream ss;
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const Level lvl;
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#if LOG_ENABLEQT == 1
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const QMessageLogContext* context = nullptr;
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Entry(Level lvl, const QMessageLogContext&);
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friend void qtMessageHandler(QtMsgType type, const QMessageLogContext& context, const QString& message);
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#endif
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void addMetadataHeader();
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@ -45,6 +86,12 @@ public:
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return lvl;
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}
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#if LOG_ENABLEQT == 1
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constexpr const QMessageLogContext* getContext() const {
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return context;
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}
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#endif
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using MetaFunction = std::function<std::ostream&(std::ostream&, const Entry&)>;
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template <typename T> Entry& operator<<(T&& msg) {
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3
Makefile
3
Makefile
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@ -1,7 +1,8 @@
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TARGET = Log.o
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TEST = test
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LOG_USEMUTEX ?= 0
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CXXFLAGS = -O2 -g -std=c++11 -Wall -Wextra -pedantic-errors -MMD -DLOG_USEMUTEX=$(LOG_USEMUTEX)
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LOG_ENABLEQT ?= 0
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CXXFLAGS = -O2 -g -std=c++11 -Wall -Wextra -pedantic-errors -MMD -DLOG_USEMUTEX=$(LOG_USEMUTEX) -DLOG_ENABLEQT=$(LOG_ENABLEQT)
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.PHONY: all clean
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