Added Logger class acting as threadsafe wrapper for QDebug

cli/logger.cpp

@@ -0,0 +1,36 @@
+#include <QMutexLocker>
+#include "logger.h"
+
+Logger::Logger(QFile *file)
+{
+	out = new QDebug(file);
+	this->file = file;
+}
+
+Logger::Logger(Logger &&o)
+{
+	this->out = o.out;
+	o.out = nullptr;
+}
+
+Logger &Logger::error()
+{
+	static Logger result = []
+	{
+		QFile *file = new QFile();
+		file->open(stderr, QIODevice::WriteOnly);
+		return Logger(file);
+	}();
+	return result;
+}
+
+Logger &Logger::info()
+{
+	static Logger result = []
+	{
+		QFile *file = new QFile();
+		file->open(stdout, QIODevice::WriteOnly);
+		return Logger(file);
+	}();
+	return result;
+}

cli/logger.h

@@ -0,0 +1,43 @@
+#ifndef LOGGER_H
+#define LOGGER_H
+#include <QFile>
+#include <QDebug>
+#include <QMutex>
+class Logger
+{
+  private:
+	QDebug *out;
+	QMutex mutex;
+	QFile *file;
+
+  public:
+	Logger(QFile *file);
+	Logger(Logger &&o);
+
+	template <class T> Logger &operator<<(const T &val)
+	{
+		QMutexLocker locker(&this->mutex);
+		*out << val;
+		file->flush();
+		return *this;
+	}
+
+	template <class T> Logger &operator<<(const T *val)
+	{
+		QMutexLocker locker(&this->mutex);
+		*out << val;
+		file->flush();
+		return *this;
+	}
+
+	~Logger()
+	{
+		delete out;
+	}
+
+	static Logger &error();
+
+	static Logger &info();
+};
+
+#endif // LOGGER_H