001/**
002 *
003 * Copyright © 2014-2021 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.packet.XmlEnvironment;
024import org.jivesoftware.smack.provider.ExtensionElementProvider;
025import org.jivesoftware.smack.xml.XmlPullParser;
026import org.jivesoftware.smack.xml.XmlPullParserException;
027
028import org.jivesoftware.smackx.delay.packet.DelayInformation;
029
030public abstract class AbstractDelayInformationProvider extends ExtensionElementProvider<DelayInformation> {
031
032    @Override
033    public final DelayInformation parse(XmlPullParser parser,
034                    int initialDepth, XmlEnvironment xmlEnvironment) throws XmlPullParserException,
035                    IOException, ParseException {
036        String stampString = parser.getAttributeValue("", "stamp");
037        String from = parser.getAttributeValue("", "from");
038        final String reason;
039        XmlPullParser.Event event = parser.next();
040        switch (event) {
041        case TEXT_CHARACTERS:
042            reason = parser.getText();
043            parser.next();
044            break;
045        case END_ELEMENT:
046            reason = null;
047            break;
048        default:
049            // TODO: Should be SmackParseException.
050            throw new IOException("Unexpected event: " + event);
051        }
052
053        Date stamp = parseDate(stampString);
054        return new DelayInformation(stamp, from, reason);
055    }
056
057    protected abstract Date parseDate(String string) throws ParseException;
058}