linkfindingvisitor.java

本程序用于对页面信息进行提取并分析

// HTMLParser Library $Name: v1_6_20060319 $ - A java-based parser for HTML
// http://sourceforge.org/projects/htmlparser
// Copyright (C) 2004 Somik Raha
//
// Revision Control Information
//
// $Source: /cvsroot/htmlparser/htmlparser/src/org/htmlparser/visitors/LinkFindingVisitor.java,v $
// $Author: derrickoswald $
// $Date: 2004/05/24 00:38:19 $
// $Revision: 1.36 $
//
// 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.visitors;

import java.util.Locale;
import org.htmlparser.tags.LinkTag;

import org.htmlparser.Tag;

public class LinkFindingVisitor extends NodeVisitor
{
    private String linkTextToFind;
    private int count;
    private Locale locale;

    public LinkFindingVisitor (String linkTextToFind)
    {
        this (linkTextToFind, null);
    }

    public LinkFindingVisitor (String linkTextToFind, Locale locale)
    {
        count = 0;
        this.locale = (null == locale) ? Locale.ENGLISH : locale;
        this.linkTextToFind = linkTextToFind.toUpperCase (this.locale);
    }

    public void visitTag(Tag tag)
    {
        if (tag instanceof LinkTag)
            if (-1 != ((LinkTag)tag).getLinkText ().toUpperCase (locale).indexOf (linkTextToFind))
                count++;
    }

    public boolean linkTextFound()
    {
        return (0 != count);
    }

    public int getCount()
    {
        return (count);
    }

}