001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.generator.gsp.token;
022    
023    import org.granite.generator.gsp.ParseException;
024    
025    import java.io.StringReader;
026    import java.io.IOException;
027    
028    import java.util.Map;
029    import java.util.HashMap;
030    
031    import org.xml.sax.Attributes;
032    import org.xml.sax.SAXException;
033    import org.xml.sax.InputSource;
034    import org.xml.sax.helpers.DefaultHandler;
035    
036    import javax.xml.parsers.SAXParserFactory;
037    import javax.xml.parsers.ParserConfigurationException;
038    
039    /**
040     * @author Franck WOLFF
041     */
042    public class Directive extends Token {
043    
044        String name = null;
045        final Map<String, String> attributes = new HashMap<String, String>();
046    
047        public Directive(int index, String content) throws ParseException {
048            super(index, content);
049            try {
050                parse(content);
051            } catch (Exception e) {
052                throw new ParseException(e);
053            }
054        }
055    
056        public String getName() {
057            return name;
058        }
059    
060        public Map<String, String> getAttributes() {
061            return attributes;
062        }
063    
064        private void parse(String content)
065            throws SAXException, ParserConfigurationException, IOException {
066            InputSource is = new InputSource(new StringReader('<' + content + "/>"));
067            SAXParserFactory.newInstance().newSAXParser().parse(is, new Handler());
068        }
069    
070        @Override
071        public String toString() {
072            return this.getClass().getName() + '[' + name + ", " + attributes + ']';
073        }
074    
075        class Handler extends DefaultHandler {
076            @Override
077            public void startElement(String namespaceURI,
078                                     String localName,
079                                     String qName,
080                                     Attributes atts)
081                throws SAXException {
082                if (name != null)
083                    throw new SAXException("illegal nested element: " + qName);
084                name = qName;
085                for (int i = 0; i < atts.getLength(); i++)
086                    attributes.put(atts.getQName(i), atts.getValue(i));
087            }
088        }
089    }