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; 022 023import org.jivesoftware.smackx.pubsub.packet.PubSub; 024import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace; 025 026import org.xmlpull.v1.XmlPullParser; 027 028/** 029 * Parses the root PubSub stanza(/packet) extensions of the {@link IQ} stanza(/packet) and returns 030 * a {@link PubSub} instance. 031 * 032 * @author Robin Collier 033 */ 034public class PubSubProvider extends IQProvider<PubSub> 035{ 036 @Override 037 public PubSub parse(XmlPullParser parser, int initialDepth) 038 throws Exception { 039 String namespace = parser.getNamespace(); 040 PubSubNamespace pubSubNamespace = PubSubNamespace.valueOfFromXmlns(namespace); 041 PubSub pubsub = new PubSub(pubSubNamespace); 042 043 outerloop: while (true) 044 { 045 int eventType = parser.next(); 046 switch (eventType) { 047 case XmlPullParser.START_TAG: 048 PacketParserUtils.addExtensionElement(pubsub, parser); 049 break; 050 case XmlPullParser.END_TAG: 051 if (parser.getDepth() == initialDepth) { 052 break outerloop; 053 } 054 break; 055 } 056 } 057 return pubsub; 058 } 059}