// HTMLParser Library $Name: v1_6_20060319 $ - A java-based parser for HTML// http://sourceforge.org/projects/htmlparser// Copyright (C) 2005 John Derrick//// Revision Control Information//// $Source: /cvsroot/htmlparser/htmlparser/src/org/htmlparser/filters/LinkStringFilter.java,v $// $Author: derrickoswald $// $Date: 2005/05/15 11:49:04 $// $Revision: 1.3 $//// 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 org.htmlparser.filters;import org.htmlparser.Node;import org.htmlparser.NodeFilter;import org.htmlparser.tags.LinkTag;/** * This class accepts tags of class LinkTag that contain a link matching a given * pattern string. Use this filter to extract LinkTag nodes with URLs containing * the desired string. */public class LinkStringFilter implements NodeFilter{    /**     * The pattern to search for in the link.     */    protected String mPattern;    /**     * Flag indicating case sensitive/insensitive search.     */    protected boolean mCaseSensitive;    /**     * Creates a LinkStringFilter that accepts LinkTag nodes containing     * a URL that matches the supplied pattern.     * The match is case insensitive.     * @param pattern The pattern to match.     */    public LinkStringFilter (String pattern)    {        this (pattern, false);    }    /**     * Creates a LinkStringFilter that accepts LinkTag nodes containing     * a URL that matches the supplied pattern.     * @param pattern The pattern to match.     * @param caseSensitive Specifies case sensitivity for the matching process.     */    public LinkStringFilter (String pattern, boolean caseSensitive)    {        mPattern = pattern;        mCaseSensitive = caseSensitive;    }    /**     * Accept nodes that are a LinkTag and     * have a URL that matches the pattern supplied in the constructor.     * @param node The node to check.     * @return <code>true</code> if the node is a link with the pattern.     */    public boolean accept (Node node)    {        boolean ret;        ret = false;        if (LinkTag.class.isAssignableFrom (node.getClass ()))        {            String link = ((LinkTag)node).getLink ();            if (mCaseSensitive)            {                if (link.indexOf (mPattern) > -1)                    ret = true;            }            else            {                if (link.toUpperCase ().indexOf (mPattern.toUpperCase ()) > -1)                    ret = true;            }        }        return (ret);    }}