LogShim.java

/*
 * Visage
 * Copyright (c) 2015-2016, Aesen Vismea <aesen@unascribed.com>
 *
 * The MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.surgeplay.visage.master.glue;

import java.util.logging.Level;
import java.util.logging.LogRecord;

import org.eclipse.jetty.util.log.AbstractLogger;
import org.eclipse.jetty.util.log.Logger;

public class LogShim extends AbstractLogger {
	private boolean debug = false;
	private final java.util.logging.Logger log;
	public LogShim(java.util.logging.Logger log) {
		this.log = log;
	}

	@Override
	public String getName() {
		return "LogShim";
	}

	@Override
	public void warn(String msg, Object... args) {
		log.warning(format(msg, args));
	}

	@Override
	public void warn(Throwable thrown) {
		LogRecord rec = new LogRecord(Level.WARNING, "");
		rec.setThrown(thrown);
		log.log(rec);
	}

	@Override
	public void warn(String msg, Throwable thrown) {
		LogRecord rec = new LogRecord(Level.WARNING, msg);
		rec.setThrown(thrown);
		log.log(rec);
	}

	@Override
	public void info(String msg, Object... args) {
		log.info(format(msg, args));
	}

	@Override
	public void info(Throwable thrown) {
		LogRecord rec = new LogRecord(Level.INFO, "");
		rec.setThrown(thrown);
		log.log(rec);
	}

	@Override
	public void info(String msg, Throwable thrown) {
		LogRecord rec = new LogRecord(Level.INFO, msg);
		rec.setThrown(thrown);
		log.log(rec);
	}

	@Override
	public boolean isDebugEnabled() {
		return debug;
	}

	@Override
	public void setDebugEnabled(boolean enabled) {
		debug = enabled;
	}

	@Override
	public void debug(String msg, Object... args) {
		log.finer(format(msg, args));
	}

	@Override
	public void debug(String msg, long value) {
		log.finer(format(msg, value));
	}

	@Override
	public void debug(Throwable thrown) {
		LogRecord rec = new LogRecord(Level.FINER, "");
		rec.setThrown(thrown);
		log.log(rec);
	}

	@Override
	public void debug(String msg, Throwable thrown) {
		LogRecord rec = new LogRecord(Level.FINER, msg);
		rec.setThrown(thrown);
		log.log(rec);
	}
	
	@Override
	public void ignore(Throwable ignored) {}

	@Override
	protected Logger newLogger(String fullname) {
		return new LogShim(log);
	}
	
	// From org.eclipse.jetty.util.log.JavaUtilLog
	private String format(String msg, Object... args) {
		msg = String.valueOf(msg); // Avoids NPE
		String braces = "{}";
		StringBuilder builder = new StringBuilder();
		int start = 0;
		for (Object arg : args) {
			int bracesIndex = msg.indexOf(braces, start);
			if (bracesIndex < 0) {
				builder.append(msg.substring(start));
				builder.append(" ");
				builder.append(arg);
				start = msg.length();
			} else {
				builder.append(msg.substring(start, bracesIndex));
				builder.append(String.valueOf(arg));
				start = bracesIndex + braces.length();
			}
		}
		builder.append(msg.substring(start));
		return builder.toString();
	}
}