com.cladonia.xml.HTMLUtilities.java Source code

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Here is the source code for com.cladonia.xml.HTMLUtilities.java

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/*
 * $Id: HTMLUtilities.java,v 1.6 2004/05/28 09:14:00 edankert Exp $
 *
 * Copyright (C) 2002, Cladonia Ltd. All rights reserved.
 *
 * This software is the proprietary information of Cladonia Ltd.  
 * Use is subject to license terms.
 */
package com.cladonia.xml;

import java.io.UnsupportedEncodingException;
import java.io.IOException;
import java.io.ByteArrayInputStream;

import org.cyberneko.html.HTMLConfiguration;

import org.apache.xerces.parsers.SAXParser;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;

import org.dom4j.io.SAXReader;
import org.dom4j.DocumentException;

/**
 * Utilities class for HTML functionality (including Clean Up HTML)
 *
 * @version   $Revision: 1.6 $, $Date: 2004/05/28 09:14:00 $
 * @author Dogs bay
 */
public class HTMLUtilities {

    /** Notify character entity references. */
    public static final String NOTIFY_CHAR_REFS = "http://apache.org/xml/features/scanner/notify-char-refs";

    /** Notify built-in entity references. */
    public static final String NOTIFY_HTML_BUILTIN_REFS = "http://cyberneko.org/html/features/scanner/notify-builtin-refs";

    /** Filters property identifier. */
    protected static final String FILTERS = "http://cyberneko.org/html/properties/filters";

    /** Element case identifier. */
    public static final String ELEMENT_CASE = "http://cyberneko.org/html/properties/names/elems";

    /** Attribute case identifier. */
    public static final String ATTR_CASE = "http://cyberneko.org/html/properties/names/attrs";

    public static final String ENCODING_PROPERTY = "http://cyberneko.org/html/properties/default-encoding";

    public static final String IGNORE_SPECIFIED_CHARSET = "http://cyberneko.org/html/features/scanner/ignore-specified-charset";

    /**
    * Cleans up HTML, makes HTML well formed etc
    *
    * @param text The HTML
    * @param encoding The encoding
    */
    public static String cleanUpHTML(String text) throws UnsupportedEncodingException, IOException,
            SAXNotRecognizedException, SAXNotSupportedException, DocumentException {

        //   set the paser to use Neko HTML configuration
        SAXParser parser = new SAXParser(new HTMLConfiguration());

        parser.setFeature(NOTIFY_CHAR_REFS, true);
        parser.setFeature(NOTIFY_HTML_BUILTIN_REFS, true);
        parser.setFeature(IGNORE_SPECIFIED_CHARSET, true);

        // set the parser to use lower case
        parser.setProperty(ELEMENT_CASE, "lower");
        parser.setProperty(ATTR_CASE, "lower");
        parser.setProperty(ENCODING_PROPERTY, "UTF-8");

        // create a dom4j SaxReader
        SAXReader reader = new SAXReader(parser);

        // get the bytes from the input text
        ByteArrayInputStream stream = new ByteArrayInputStream(text.getBytes("UTF-8"));

        // using sax read the stream into a dom4j dom
        XDocument doc = (XDocument) reader.read(stream);

        // write the new dom
        return XMLUtilities.write(doc, new ExchangerOutputFormat("", false, "UTF-8"));

    }
}