org.sakaiproject.qna.utils.TextUtil.java Source code

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Here is the source code for org.sakaiproject.qna.utils.TextUtil.java

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/**
 * Copyright (c) 2007-2009 The Sakai Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *             http://www.osedu.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.sakaiproject.qna.utils;

import org.apache.commons.lang3.StringEscapeUtils;

/**
 * Utility class to format output to be display on front-end & methods on strings
 *
 */
public class TextUtil {

    /**
     * Strips all HTML tags from string
     * 
     * @param String with html tags
     * @return String without tags
     */
    public static String stripTags(String html) {
        String cleanup = QNAUtils.cleanupHtmlPtags(html);
        return StringEscapeUtils.unescapeHtml3(cleanup.replaceAll("\\<.*?>", "").replaceAll("&nbsp;", " "));

        //return cleanup.replaceAll("\\<.*?>","").replaceAll("&lt;", "<").replaceAll("&gt;", ">").replaceAll("&nbsp;", " ").replaceAll("&amp;", "&");
    }

    /**
     * Check if String is blank or null after all tags have been stripped
     * (Used to check empty FCKEditor input)
     * @param str
     * @return
     */
    public static boolean isEmptyWithoutTags(String str) {
        return (str == null || "".equals(stripTags(str).trim()));
    }

}