001/**
002 *
003 * Copyright 2018 Paul Schaub
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smackx.reference.provider;
018
019import java.io.IOException;
020import java.net.URI;
021import java.net.URISyntaxException;
022
023import org.jivesoftware.smack.packet.ExtensionElement;
024import org.jivesoftware.smack.packet.XmlEnvironment;
025import org.jivesoftware.smack.parsing.SmackParsingException;
026import org.jivesoftware.smack.provider.ExtensionElementProvider;
027import org.jivesoftware.smack.provider.ProviderManager;
028import org.jivesoftware.smack.util.ParserUtils;
029import org.jivesoftware.smack.xml.XmlPullParser;
030import org.jivesoftware.smack.xml.XmlPullParserException;
031
032import org.jivesoftware.smackx.reference.element.ReferenceElement;
033
034public class ReferenceProvider extends ExtensionElementProvider<ReferenceElement> {
035
036    public static final ReferenceProvider TEST_PROVIDER = new ReferenceProvider();
037
038    @Override
039    public ReferenceElement parse(XmlPullParser parser, int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException, IOException, SmackParsingException {
040        Integer begin = ParserUtils.getIntegerAttribute(parser, ReferenceElement.ATTR_BEGIN);
041        Integer end =   ParserUtils.getIntegerAttribute(parser, ReferenceElement.ATTR_END);
042        String typeString = parser.getAttributeValue(null, ReferenceElement.ATTR_TYPE);
043        ReferenceElement.Type type = ReferenceElement.Type.valueOf(typeString);
044        String anchor = parser.getAttributeValue(null, ReferenceElement.ATTR_ANCHOR);
045        String uriString = parser.getAttributeValue(null, ReferenceElement.ATTR_URI);
046        URI uri;
047        try {
048            uri = uriString != null ? new URI(uriString) : null;
049        }
050        catch (URISyntaxException e) {
051            // TODO: Should be SmackParseException and probably be factored into ParserUtils.
052            throw new IOException(e);
053        }
054        ExtensionElement child = null;
055        outerloop: while (true) {
056            XmlPullParser.Event eventType = parser.next();
057            if (eventType == XmlPullParser.Event.START_ELEMENT) {
058                String elementName = parser.getName();
059                String namespace = parser.getNamespace();
060                ExtensionElementProvider<?> provider = ProviderManager.getExtensionProvider(elementName, namespace);
061                if (provider != null) {
062                    child = provider.parse(parser);
063                }
064            }
065            else if (eventType == XmlPullParser.Event.END_ELEMENT) {
066                break outerloop;
067            }
068        }
069
070        return new ReferenceElement(begin, end, type, anchor, uri, child);
071    }
072}