/**
* Copyright (C) 2011 JTalks.org Team
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jtalks.jcommune.web.util;
import org.apache.commons.lang.StringUtils;
/**
* @author denis.berezhnoy
*/
public class RssUtils {
/**
* Method for skip invalid characters in content for RSS feed.
* <p/>
* Description valid chars in XML specification
* http://www.w3.org/TR/REC-xml/#charsets
*
* @param in - post content.
*/
public static String skipInValidXMLChars(String in) {
if (StringUtils.isBlank(in)) return StringUtils.EMPTY;
String pattern = "[^"
+ "\u0009\r\n"
+ "\u0020-\uD7FF"
+ "\uE000-\uFFFD"
+ "\ud800\udc00-\udbff\udfff"
+ "]";
return in.replaceAll(pattern, StringUtils.EMPTY);
}
}