StdOutLogger.java

/*
 * This file is part of FTB Launcher.
 *
 * Copyright © 2012-2016, FTB Launcher Contributors <https://github.com/Slowpoke101/FTBLaunch/>
 * FTB Launcher is licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.ftb.log;

import java.io.PrintStream;

import lombok.Setter;

public class StdOutLogger implements ILogListener
{
	// save real System.out and System.err
	// otherwise we'll got nasty loop
	private final static PrintStream realStderr = System.err;
	private final static PrintStream realStdout = System.out;

	// DEBUG, EXTENTED, MINIMAL
	// how to write. Debug is only needed if we want to
	// see source of the log message. Hardcoded to EXTENDED
	private LogType logType = LogType.EXTENDED;

	// ALL, LAUNCHER, EXTERNAL
	// which sources to write
	@Setter
	private LogSource logSource = LogSource.LAUNCHER;

	// INFO, WARN, ERROR, UNKNOWN
	// which severities to write. Not used in Console or LogWriter
	@Setter
	private LogLevel logLevel = LogLevel.UNKNOWN;

	public StdOutLogger ()
	{}

	public StdOutLogger (LogLevel logLevel)
	{
		this.logLevel = logLevel;
	}

	public StdOutLogger (LogSource logSource)
	{
		this.logSource = logSource;
	}

	public StdOutLogger (LogLevel logLevel, LogSource logSource)
	{
		this.logLevel = logLevel;
		this.logSource = logSource;
	}

	@Override
	public void onLogEvent (LogEntry entry)
	{
		if (logSource != LogSource.ALL && entry.source != logSource)
		{
			return;
		}

		if (!logLevel.includes(entry.level))
		{
			return;
		}
		if (entry.level == LogLevel.ERROR)
		{
			realStderr.println(entry.toString(logType));
		}
		else
		{
			realStdout.println(entry.toString(logType));
		}
	}
}