franta-hg@8: /**
franta-hg@8:  * copy-image-resizer
franta-hg@8:  * Copyright © 2013 František Kučera (frantovo.cz)
franta-hg@8:  *
franta-hg@8:  * This program is free software: you can redistribute it and/or modify
franta-hg@8:  * it under the terms of the GNU General Public License as published by
franta-hg@8:  * the Free Software Foundation, either version 3 of the License, or
franta-hg@8:  * (at your option) any later version.
franta-hg@8:  *
franta-hg@8:  * This program is distributed in the hope that it will be useful,
franta-hg@8:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
franta-hg@8:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
franta-hg@8:  * GNU General Public License for more details.
franta-hg@8:  *
franta-hg@8:  * You should have received a copy of the GNU General Public License
franta-hg@8:  * along with this program. If not, see <http://www.gnu.org/licenses/>.
franta-hg@8:  */
franta-hg@8: package cz.frantovo.copyImageResizer.logging;
franta-hg@8: 
franta-hg@16: import java.io.PrintWriter;
franta-hg@8: import java.io.StringWriter;
franta-hg@16: import java.text.SimpleDateFormat;
franta-hg@16: import java.util.Date;
franta-hg@8: import java.util.logging.Level;
franta-hg@8: import java.util.logging.LogRecord;
franta-hg@8: 
franta-hg@8: /**
franta-hg@8:  * For console/terminal log output. Log messages are printed in brief and colorful form.
franta-hg@8:  *
franta-hg@8:  * @author Ing. František Kučera (frantovo.cz)
franta-hg@8:  */
franta-hg@16: public class SimpleFormatter extends AbstractFormatter {
franta-hg@8: 
franta-hg@16: 	private static final ThreadLocal<SimpleDateFormat> dateFormatter = new ThreadLocal<SimpleDateFormat>() {
franta-hg@16: 
franta-hg@16: 		@Override
franta-hg@16: 		protected SimpleDateFormat initialValue() {
franta-hg@16: 			return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
franta-hg@16: 		}
franta-hg@16: 
franta-hg@16: 	};
franta-hg@8: 
franta-hg@8: 	@Override
franta-hg@8: 	public String format(LogRecord r) {
franta-hg@16: 		StringBuilder sb = new StringBuilder();
franta-hg@16: 
franta-hg@16: 		printTimestamp(sb, new Date(r.getMillis()));
franta-hg@16: 		printSeparator(sb);
franta-hg@16: 		printLevel(sb, r.getLevel());
franta-hg@16: 		printSeparator(sb);
franta-hg@16: 		printMessage(sb, r);
franta-hg@16: 		printSeparator(sb);
franta-hg@16: 		printThrowable(sb, r);
franta-hg@16: 		sb.append("\n");
franta-hg@16: 
franta-hg@16: 		return sb.toString();
franta-hg@8: 	}
franta-hg@8: 
franta-hg@16: 	private void printSeparator(StringBuilder out) {
franta-hg@16: 		out.append(" | ");
franta-hg@16: 	}
franta-hg@16: 
franta-hg@16: 	private void printTimestamp(StringBuilder out, Date date) {
franta-hg@16: 		out.append(dateFormatter.get().format(date));
franta-hg@16: 	}
franta-hg@16: 
franta-hg@16: 	private void printLevel(StringBuilder out, Level l) {
franta-hg@8: 
franta-hg@8: 		if (l == Level.SEVERE) {
franta-hg@16: 			out.append(rpad("ERROR", 10));
franta-hg@16: 		} else if (l == Level.INFO) {
franta-hg@16: 			out.append(rpad("OK", 10));
franta-hg@16: 		} else {
franta-hg@16: 			out.append(rpad(l.getName(), 10));
franta-hg@8: 		}
franta-hg@8: 	}
franta-hg@8: 
franta-hg@16: 	private void printMessage(StringBuilder out, LogRecord r) {
franta-hg@16: 		String message = formatMessage(r);
franta-hg@16: 		// convert to single-line message
franta-hg@16: 		message = message.replaceAll("\\\\", "\\\\"); // escape backslashes
franta-hg@16: 		message = message.replaceAll("\\n", "\\n"); // escape line ends
franta-hg@16: 		out.append(message);
franta-hg@8: 	}
franta-hg@8: 
franta-hg@16: 	private void printThrowable(StringBuilder out, LogRecord r) {
franta-hg@8: 		Throwable t = r.getThrown();
franta-hg@8: 		if (t != null) {
franta-hg@16: 			out.append(t.getClass().getSimpleName());
franta-hg@8: 			String message = t.getLocalizedMessage();
franta-hg@8: 			if (message != null) {
franta-hg@16: 				out.append(": ");
franta-hg@16: 				out.append(message);
franta-hg@8: 			}
franta-hg@16: 			if (isPrintStacktrace()) {
franta-hg@16: 				out.append("\n");
franta-hg@16: 				StringWriter sw = new StringWriter();
franta-hg@16: 				t.printStackTrace(new PrintWriter(sw));
franta-hg@16: 				out.append(sw.toString());
franta-hg@8: 			}
franta-hg@8: 		}
franta-hg@8: 	}
franta-hg@8: }