001    /*
002     * Copyright (c) 2005 Henri Sivonen
003     *
004     * Permission is hereby granted, free of charge, to any person obtaining a 
005     * copy of this software and associated documentation files (the "Software"), 
006     * to deal in the Software without restriction, including without limitation 
007     * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
008     * and/or sell copies of the Software, and to permit persons to whom the 
009     * Software is furnished to do so, subject to the following conditions:
010     *
011     * The above copyright notice and this permission notice shall be included in 
012     * all copies or substantial portions of the Software.
013     *
014     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
015     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
016     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 
017     * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
018     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
019     * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
020     * DEALINGS IN THE SOFTWARE.
021     */
022    
023    package fi.iki.hsivonen.xml;
024    
025    import org.xml.sax.Attributes;
026    import org.xml.sax.SAXException;
027    
028    import gnu.xml.pipeline.EventConsumer;
029    import gnu.xml.pipeline.EventFilter;
030    
031    public class LangToXmlLang extends EventFilter {
032    
033        public LangToXmlLang() {
034            super();
035            setContentHandler(this);        
036        }
037    
038        public LangToXmlLang(EventConsumer next) {
039            super(next);
040            setContentHandler(this);    
041        }
042    
043        /**
044         * @see gnu.xml.pipeline.EventFilter#startElement(java.lang.String,
045         *      java.lang.String, java.lang.String, org.xml.sax.Attributes)
046         */
047        public void startElement(String uri, String arg1, String arg2,
048                Attributes attrs) throws SAXException {
049            if ("http://www.w3.org/1999/xhtml".equals(uri) && attrs.getIndex("", "lang") != -1) {
050                AttributesImpl fixedAttrs = new AttributesImpl();
051                for (int i = 0; i < attrs.getLength(); i++) {
052                    if ("".equals(attrs.getURI(i)) && "lang".equals(attrs.getLocalName(i))) {
053                        if (attrs.getIndex("http://www.w3.org/XML/1998/namespace", "lang") == -1) {
054                            fixedAttrs.addAttribute("http://www.w3.org/XML/1998/namespace", "lang", "xml:lang", "CDATA", attrs.getValue(i));                        
055                        }
056                    } else {
057                        fixedAttrs.addAttribute(attrs.getURI(i), attrs.getLocalName(i), attrs.getQName(i), attrs.getType(i), attrs.getValue(i));
058                    }
059                }
060                super.startElement(uri, arg1, arg2, fixedAttrs);
061            } else {
062                super.startElement(uri, arg1, arg2, attrs);
063            }
064        }
065    
066    }