/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program 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 General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

package de.ilias.services.lucene.index.transform;

import java.util.regex.Pattern;

import org.apache.log4j.Logger;

/**
 * 
 *
 * @author Stefan Meyer <smeyer.ilias@gmx.de>
 * @version $Id$
 */
public class LinefeedSanitizer implements ContentTransformer {

	protected Logger logger = Logger.getLogger(LinefeedSanitizer.class);
	
	/**
	 * @see de.ilias.services.lucene.index.transform.ContentTransformer#transform(java.lang.String)
	 */
	public String transform(String content) {

		content = Pattern.compile("\\r\\n",Pattern.DOTALL).matcher(content).replaceAll(" ");
		content = Pattern.compile("\\r",Pattern.DOTALL).matcher(content).replaceAll(" ");
		content = Pattern.compile("\\n",Pattern.DOTALL).matcher(content).replaceAll(" ");
		
		logger.debug("Content is: " + content);
		
		return content;
	}

}