/*
 This file is part of the software framework JStatCom, 
 a library for building applications for data based analysis.

 Copyright (C) 2000-2005  Markus Kraetzig

 This library is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as
 published by the Free Software Foundation; either version 2.1 of the
 License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 USA
 */
package com.jstatcom.component;

import org.apache.log4j.AppenderSkeleton;
import org.apache.log4j.Level;
import org.apache.log4j.spi.LoggingEvent;
import org.apache.log4j.spi.ThrowableInformation;

/**
 * Custom appender for log4j logging.
 * 
 * @author Markus Kraetzig 
 */
public class Log4jCustomAppender extends AppenderSkeleton {

    @Override
    protected void append(LoggingEvent arg0) {

        if (arg0.getLevel() == Level.INFO) {
            System.out.println(arg0.getMessage());
        } else {
            String text = this.layout.format(arg0);
            System.out.print(text);
        }
        ThrowableInformation info = arg0.getThrowableInformation();
        if (info == null)
            return;
        Throwable t = info.getThrowable();
        if (t == null)
            return;
        for (String s : arg0.getThrowableStrRep())
            System.out.println(s);

    }

    @Override
    public boolean requiresLayout() {
        return true;
    }

    @Override
    public void close() {

    }

}