1 /** 2 * $RCSfile$ 3 * $Revision$ 4 * $Date$ 5 * 6 * Copyright 2003-2007 Jive Software. 7 * 8 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 9 * you may not use this file except in compliance with the License. 10 * You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, software 15 * distributed under the License is distributed on an "AS IS" BASIS, 16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 17 * See the License for the specific language governing permissions and 18 * limitations under the License. 19 */ 20 21 package org.jivesoftware.smackx.provider; 22 23 import java.util.ArrayList; 24 25 import org.jivesoftware.smack.packet.PacketExtension; 26 import org.jivesoftware.smack.provider.PacketExtensionProvider; 27 import org.jivesoftware.smackx.*; 28 import org.jivesoftware.smackx.packet.*; 29 import org.xmlpull.v1.XmlPullParser; 30 31 /** 32 * 33 * The RosterExchangeProvider parses RosterExchange packets. 34 * 35 * @author Gaston Dombiak 36 */ 37 public class RosterExchangeProvider implements PacketExtensionProvider { 38 39 /** 40 * Creates a new RosterExchangeProvider. 41 * ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor 42 */ RosterExchangeProvider()43 public RosterExchangeProvider() { 44 } 45 46 /** 47 * Parses a RosterExchange packet (extension sub-packet). 48 * 49 * @param parser the XML parser, positioned at the starting element of the extension. 50 * @return a PacketExtension. 51 * @throws Exception if a parsing error occurs. 52 */ parseExtension(XmlPullParser parser)53 public PacketExtension parseExtension(XmlPullParser parser) throws Exception { 54 55 RosterExchange rosterExchange = new RosterExchange(); 56 boolean done = false; 57 RemoteRosterEntry remoteRosterEntry = null; 58 String jid = ""; 59 String name = ""; 60 ArrayList<String> groupsName = new ArrayList<String>(); 61 while (!done) { 62 int eventType = parser.next(); 63 if (eventType == XmlPullParser.START_TAG) { 64 if (parser.getName().equals("item")) { 65 // Reset this variable since they are optional for each item 66 groupsName = new ArrayList<String>(); 67 // Initialize the variables from the parsed XML 68 jid = parser.getAttributeValue("", "jid"); 69 name = parser.getAttributeValue("", "name"); 70 } 71 if (parser.getName().equals("group")) { 72 groupsName.add(parser.nextText()); 73 } 74 } else if (eventType == XmlPullParser.END_TAG) { 75 if (parser.getName().equals("item")) { 76 // Create packet. 77 remoteRosterEntry = new RemoteRosterEntry(jid, name, (String[]) groupsName.toArray(new String[groupsName.size()])); 78 rosterExchange.addRosterEntry(remoteRosterEntry); 79 } 80 if (parser.getName().equals("x")) { 81 done = true; 82 } 83 } 84 } 85 86 return rosterExchange; 87 88 } 89 90 } 91