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