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
021package org.granite.generator.gsp.token;
022
023import org.granite.generator.gsp.ParseException;
024
025import java.io.StringReader;
026import java.io.IOException;
027
028import java.util.Map;
029import java.util.HashMap;
030
031import org.xml.sax.Attributes;
032import org.xml.sax.SAXException;
033import org.xml.sax.InputSource;
034import org.xml.sax.helpers.DefaultHandler;
035
036import javax.xml.parsers.SAXParserFactory;
037import javax.xml.parsers.ParserConfigurationException;
038
039/**
040 * @author Franck WOLFF
041 */
042public 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}