001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.util;
016    
017    import com.liferay.portal.kernel.security.pacl.permission.PortalRuntimePermission;
018    
019    import java.io.Reader;
020    
021    /**
022     * <p>
023     * This class can compare two different versions of HTML code. It detects
024     * changes to an entire HTML page such as removal or addition of characters or
025     * images.
026     * </p>
027     *
028     * @author Julio Camarero
029     */
030    public class DiffHtmlUtil {
031    
032            public static String diff(Reader source, Reader target) throws Exception {
033                    return getDiffHtml().diff(source, target);
034            }
035    
036            public static DiffHtml getDiffHtml() {
037                    PortalRuntimePermission.checkGetBeanProperty(DiffHtmlUtil.class);
038    
039                    return _diffHtml;
040            }
041    
042            public void setDiffHtml(DiffHtml diffHtml) {
043                    PortalRuntimePermission.checkSetBeanProperty(getClass());
044    
045                    _diffHtml = diffHtml;
046            }
047    
048            private static DiffHtml _diffHtml;
049    
050    }