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
21package org.jivesoftware.smackx.provider;
22
23import java.text.ParseException;
24import java.util.Date;
25
26import org.jivesoftware.smack.packet.Packet;
27import org.jivesoftware.smack.packet.PacketExtension;
28import org.jivesoftware.smack.provider.PacketExtensionProvider;
29import org.jivesoftware.smack.util.StringUtils;
30import org.jivesoftware.smackx.packet.DelayInformation;
31import org.xmlpull.v1.XmlPullParser;
32
33/**
34 * The DelayInformationProvider parses DelayInformation packets.
35 *
36 * @author Gaston Dombiak
37 * @author Henning Staib
38 */
39public class DelayInformationProvider implements PacketExtensionProvider {
40
41    public PacketExtension parseExtension(XmlPullParser parser) throws Exception {
42        String stampString = (parser.getAttributeValue("", "stamp"));
43        Date stamp = null;
44
45        try {
46            stamp = StringUtils.parseDate(stampString);
47        }
48        catch (ParseException parseExc) {
49            /*
50             * if date could not be parsed but XML is valid, don't shutdown
51             * connection by throwing an exception instead set timestamp to epoch
52             * so that it is obviously wrong.
53             */
54            if (stamp == null) {
55                stamp = new Date(0);
56            }
57        }
58
59
60        DelayInformation delayInformation = new DelayInformation(stamp);
61        delayInformation.setFrom(parser.getAttributeValue("", "from"));
62        String reason = parser.nextText();
63
64        /*
65         * parser.nextText() returns empty string if there is no reason.
66         * DelayInformation API specifies that null should be returned in that
67         * case.
68         */
69        reason = "".equals(reason) ? null : reason;
70        delayInformation.setReason(reason);
71
72        return delayInformation;
73    }
74}
75