001/** 002 * 003 * Copyright the original author or authors 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.pubsub.provider; 018 019import org.jivesoftware.smack.packet.IQ; 020import org.jivesoftware.smack.provider.IQProvider; 021import org.jivesoftware.smack.util.PacketParserUtils; 022import org.jivesoftware.smackx.pubsub.packet.PubSub; 023import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace; 024import org.xmlpull.v1.XmlPullParser; 025 026/** 027 * Parses the root pubsub stanza(/packet) extensions of the {@link IQ} stanza(/packet) and returns 028 * a {@link PubSub} instance. 029 * 030 * @author Robin Collier 031 */ 032public class PubSubProvider extends IQProvider<PubSub> 033{ 034 @Override 035 public PubSub parse(XmlPullParser parser, int initialDepth) 036 throws Exception { 037 String namespace = parser.getNamespace(); 038 PubSubNamespace pubSubNamespace = PubSubNamespace.valueOfFromXmlns(namespace); 039 PubSub pubsub = new PubSub(pubSubNamespace); 040 041 outerloop: while (true) 042 { 043 int eventType = parser.next(); 044 switch (eventType) { 045 case XmlPullParser.START_TAG: 046 PacketParserUtils.addExtensionElement(pubsub, parser); 047 break; 048 case XmlPullParser.END_TAG: 049 if (parser.getDepth() == initialDepth) { 050 break outerloop; 051 } 052 break; 053 } 054 } 055 return pubsub; 056 } 057}