001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022
023package org.granite.generator.gsp.token;
024
025import org.granite.generator.gsp.ParseException;
026
027import java.io.StringReader;
028import java.io.IOException;
029
030import java.util.Map;
031import java.util.HashMap;
032
033import org.xml.sax.Attributes;
034import org.xml.sax.SAXException;
035import org.xml.sax.InputSource;
036import org.xml.sax.helpers.DefaultHandler;
037
038import javax.xml.parsers.SAXParserFactory;
039import javax.xml.parsers.ParserConfigurationException;
040
041/**
042 * @author Franck WOLFF
043 */
044public class Directive extends Token {
045
046    String name = null;
047    final Map<String, String> attributes = new HashMap<String, String>();
048
049    public Directive(int index, String content) throws ParseException {
050        super(index, content);
051        try {
052            parse(content);
053        } catch (Exception e) {
054            throw new ParseException(e);
055        }
056    }
057
058    public String getName() {
059        return name;
060    }
061
062    public Map<String, String> getAttributes() {
063        return attributes;
064    }
065
066    private void parse(String content)
067        throws SAXException, ParserConfigurationException, IOException {
068        InputSource is = new InputSource(new StringReader('<' + content + "/>"));
069        SAXParserFactory.newInstance().newSAXParser().parse(is, new Handler());
070    }
071
072    @Override
073    public String toString() {
074        return this.getClass().getName() + '[' + name + ", " + attributes + ']';
075    }
076
077    class Handler extends DefaultHandler {
078        @Override
079        public void startElement(String namespaceURI,
080                                 String localName,
081                                 String qName,
082                                 Attributes atts)
083            throws SAXException {
084            if (name != null)
085                throw new SAXException("illegal nested element: " + qName);
086            name = qName;
087            for (int i = 0; i < atts.getLength(); i++)
088                attributes.put(atts.getQName(i), atts.getValue(i));
089        }
090    }
091}