org.jivesoftware.smackx.provider.RosterExchangeProvider Maven / Gradle / Ivy

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Smack is an Open Source XMPP (Jabber) client library for instant messaging and presence. This library provides the client side functionality as specified in the core XMPP specifications as related to the client side of said specifications.

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/**
 * $RCSfile$
 * $Revision: 7071 $
 * $Date: 2007-02-11 18:59:05 -0600 (Sun, 11 Feb 2007) $
 *
 * Copyright 2003-2007 Jive Software.
 *
 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jivesoftware.smackx.provider;

import java.util.ArrayList;

import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smackx.*;
import org.jivesoftware.smackx.packet.*;
import org.xmlpull.v1.XmlPullParser;

/**
 *
 * The RosterExchangeProvider parses RosterExchange packets.
 *
 * @author Gaston Dombiak
 */
public class RosterExchangeProvider implements PacketExtensionProvider {

    /**
     * Creates a new RosterExchangeProvider.
     * ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor
     */
    public RosterExchangeProvider() {
    }

    /**
     * Parses a RosterExchange packet (extension sub-packet).
     *
     * @param parser the XML parser, positioned at the starting element of the extension.
     * @return a PacketExtension.
     * @throws Exception if a parsing error occurs.
     */
    public PacketExtension parseExtension(XmlPullParser parser) throws Exception {

        RosterExchange rosterExchange = new RosterExchange();
        boolean done = false;
        RemoteRosterEntry remoteRosterEntry = null;
		String jid = "";
		String name = "";
		ArrayList groupsName = new ArrayList();
        while (!done) {
            int eventType = parser.next();
            if (eventType == XmlPullParser.START_TAG) {
                if (parser.getName().equals("item")) {
                	// Reset this variable since they are optional for each item
					groupsName = new ArrayList();
					// Initialize the variables from the parsed XML
                    jid = parser.getAttributeValue("", "jid");
                    name = parser.getAttributeValue("", "name");
                }
                if (parser.getName().equals("group")) {
					groupsName.add(parser.nextText());
                }
            } else if (eventType == XmlPullParser.END_TAG) {
                if (parser.getName().equals("item")) {
					// Create packet.
					remoteRosterEntry = new RemoteRosterEntry(jid, name, (String[]) groupsName.toArray(new String[groupsName.size()]));
                    rosterExchange.addRosterEntry(remoteRosterEntry);
                }
                if (parser.getName().equals("x")) {
                    done = true;
                }
            }
        }

        return rosterExchange;

    }

}