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      1 /**
      2  * $RCSfile$
      3  * $Revision: 7071 $
      4  * $Date: 2007-02-12 08:59:05 +0800 (Mon, 12 Feb 2007) $
      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 org.jivesoftware.smack.packet.IQ;
     24 import org.jivesoftware.smack.provider.IQProvider;
     25 import org.jivesoftware.smack.util.PacketParserUtils;
     26 import org.jivesoftware.smackx.packet.DiscoverInfo;
     27 import org.xmlpull.v1.XmlPullParser;
     28 
     29 /**
     30 * The DiscoverInfoProvider parses Service Discovery information packets.
     31 *
     32 * @author Gaston Dombiak
     33 */
     34 public class DiscoverInfoProvider implements IQProvider {
     35 
     36     public IQ parseIQ(XmlPullParser parser) throws Exception {
     37         DiscoverInfo discoverInfo = new DiscoverInfo();
     38         boolean done = false;
     39         DiscoverInfo.Feature feature = null;
     40         DiscoverInfo.Identity identity = null;
     41         String category = "";
     42         String name = "";
     43         String type = "";
     44         String variable = "";
     45         String lang = "";
     46         discoverInfo.setNode(parser.getAttributeValue("", "node"));
     47         while (!done) {
     48             int eventType = parser.next();
     49             if (eventType == XmlPullParser.START_TAG) {
     50                 if (parser.getName().equals("identity")) {
     51                     // Initialize the variables from the parsed XML
     52                     category = parser.getAttributeValue("", "category");
     53                     name = parser.getAttributeValue("", "name");
     54                     type = parser.getAttributeValue("", "type");
     55                     lang = parser.getAttributeValue(parser.getNamespace("xml"), "lang");
     56                 }
     57                 else if (parser.getName().equals("feature")) {
     58                     // Initialize the variables from the parsed XML
     59                     variable = parser.getAttributeValue("", "var");
     60                 }
     61                 // Otherwise, it must be a packet extension.
     62                 else {
     63                     discoverInfo.addExtension(PacketParserUtils.parsePacketExtension(parser
     64                             .getName(), parser.getNamespace(), parser));
     65                 }
     66             } else if (eventType == XmlPullParser.END_TAG) {
     67                 if (parser.getName().equals("identity")) {
     68                     // Create a new identity and add it to the discovered info.
     69                     identity = new DiscoverInfo.Identity(category, name, type);
     70                     if (lang != null)
     71                         identity.setLanguage(lang);
     72                     discoverInfo.addIdentity(identity);
     73                 }
     74                 if (parser.getName().equals("feature")) {
     75                     // Create a new feature and add it to the discovered info.
     76                     discoverInfo.addFeature(variable);
     77                 }
     78                 if (parser.getName().equals("query")) {
     79                     done = true;
     80                 }
     81             }
     82         }
     83 
     84         return discoverInfo;
     85     }
     86 }