001/**
002 *
003 * Copyright © 2014 Florian Schmaus
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.delay.provider;
018
019import java.io.IOException;
020import java.text.ParseException;
021import java.util.Date;
022
023import org.jivesoftware.smack.SmackException;
024import org.jivesoftware.smack.provider.ExtensionElementProvider;
025
026import org.jivesoftware.smackx.delay.packet.DelayInformation;
027
028import org.xmlpull.v1.XmlPullParser;
029import org.xmlpull.v1.XmlPullParserException;
030
031public abstract class AbstractDelayInformationProvider extends ExtensionElementProvider<DelayInformation> {
032
033    @Override
034    public final DelayInformation parse(XmlPullParser parser,
035                    int initialDepth) throws XmlPullParserException,
036                    IOException, SmackException {
037        String stampString = (parser.getAttributeValue("", "stamp"));
038        String from = parser.getAttributeValue("", "from");
039        String reason = null;
040        if (!parser.isEmptyElementTag()) {
041            int event = parser.next();
042            switch (event) {
043            case XmlPullParser.TEXT:
044                reason = parser.getText();
045                parser.next();
046                break;
047            case XmlPullParser.END_TAG:
048                reason = "";
049                break;
050            default:
051                throw new IllegalStateException("Unexpected event: " + event);
052            }
053        } else {
054            parser.next();
055        }
056        Date stamp;
057        try {
058            stamp = parseDate(stampString);
059        } catch (ParseException e) {
060            throw new SmackException(e);
061        }
062        return new DelayInformation(stamp, from, reason);
063    }
064
065    protected abstract Date parseDate(String string) throws ParseException;
066}