1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/Logger.cpp	Mon Jan 04 15:45:12 2021 +0100
     1.3 @@ -0,0 +1,78 @@
     1.4 +/**
     1.5 + * DJM-Fix
     1.6 + * Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info)
     1.7 + *
     1.8 + * This program is free software: you can redistribute it and/or modify
     1.9 + * it under the terms of the GNU General Public License as published by
    1.10 + * the Free Software Foundation, version 3 of the License.
    1.11 + *
    1.12 + * This program is distributed in the hope that it will be useful,
    1.13 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.14 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    1.15 + * GNU General Public License for more details.
    1.16 + *
    1.17 + * You should have received a copy of the GNU General Public License
    1.18 + * along with this program. If not, see <http://www.gnu.org/licenses/>.
    1.19 + */
    1.20 +#include <chrono>
    1.21 +#include <iomanip>
    1.22 +#include <sstream>
    1.23 +
    1.24 +#include "Logger.h"
    1.25 +
    1.26 +namespace djmfix {
    1.27 +namespace logging {
    1.28 +
    1.29 +class Blackhole : public Logger {
    1.30 +public:
    1.31 +
    1.32 +	virtual void log(Level level, const std::string& message) override {
    1.33 +	}
    1.34 +};
    1.35 +
    1.36 +class LoggerImpl : public Logger {
    1.37 +private:
    1.38 +	std::ostream& output;
    1.39 +	Level minLevel;
    1.40 +
    1.41 +	std::string getTimestamp() {
    1.42 +		auto now = std::chrono::system_clock::now();
    1.43 +		auto itt = std::chrono::system_clock::to_time_t(now);
    1.44 +		std::ostringstream ss;
    1.45 +		ss << std::put_time(localtime(&itt), "%FT%T%z");
    1.46 +		return ss.str();
    1.47 +	}
    1.48 +
    1.49 +	std::string toString(Level level) {
    1.50 +		if (level == Level::SEVERE) return "SEVERE";
    1.51 +		else if (level == Level::WARNING) return "WARNING";
    1.52 +		else if (level == Level::INFO) return "INFO";
    1.53 +		else if (level == Level::CONFIG) return "CONFIG";
    1.54 +		else if (level == Level::FINE) return "FINE";
    1.55 +		else if (level == Level::FINER) return "FINER";
    1.56 +		else if (level == Level::FINEST) return "FINEST";
    1.57 +		else return "UNKNOWN";
    1.58 +	}
    1.59 +
    1.60 +public:
    1.61 +
    1.62 +	LoggerImpl(std::ostream& output, Level minLevel) : output(output), minLevel(minLevel) {
    1.63 +	}
    1.64 +
    1.65 +	virtual void log(Level level, const std::string& message) override {
    1.66 +		if (level <= minLevel) {
    1.67 +			output << getTimestamp() << " " << std::setw(8) << toString(level) << ":  " << message << std::endl;
    1.68 +		}
    1.69 +	}
    1.70 +};
    1.71 +
    1.72 +Logger* create(std::ostream& output, Level minLevel) {
    1.73 +	return new LoggerImpl(output, minLevel);
    1.74 +}
    1.75 +
    1.76 +Logger* blackhole() {
    1.77 +	return new Blackhole();
    1.78 +}
    1.79 +
    1.80 +}
    1.81 +}