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Smack/smack-extensions/src/main/java/org/jivesoftware/smackx/pep/provider/PEPProvider.java
Florian Schmaus 91fd15ad86 Prefix subprojects with 'smack-'
instead of using the old baseName=smack appendix=project.name approach,
we are now going convention over configuration and renaming the
subprojects directories to the proper name.

Having a prefix is actually very helpful, because the resulting
libraries will be named like the subproject. And a core-4.0.0-rc1.jar is
not as explicit about what it actually *is* as a
smack-core-4.0.0-rc1.jar.

SMACK-265
2014-04-28 19:44:14 +02:00

91 lines
3.3 KiB
Java

/**
*
* Copyright 2003-2007 Jive Software.
*
* 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.pep.provider;
import java.util.HashMap;
import java.util.Map;
import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.xmlpull.v1.XmlPullParser;
/**
*
* The PEPProvider parses incoming PEPEvent packets.
* (XEP-163 has a weird asymmetric deal: outbound PEP are <iq> + <pubsub> and inbound are <message> + <event>.
* The provider only deals with inbound, and so it only deals with <message>.
*
* Anyhoo...
*
* The way this works is that PEPxxx classes are generic <pubsub> and <message> providers, and anyone who
* wants to publish/receive PEPs, such as <tune>, <geoloc>, etc., simply need to extend PEPItem and register (here)
* a PacketExtensionProvider that knows how to parse that PEPItem extension.
*
* @author Jeff Williams
*/
public class PEPProvider implements PacketExtensionProvider {
Map<String, PacketExtensionProvider> nodeParsers = new HashMap<String, PacketExtensionProvider>();
PacketExtension pepItem;
/**
* Creates a new PEPProvider.
* ProviderManager requires that every PacketExtensionProvider has a public, no-argument constructor
*/
public PEPProvider() {
}
public void registerPEPParserExtension(String node, PacketExtensionProvider pepItemParser) {
nodeParsers.put(node, pepItemParser);
}
/**
* Parses a PEPEvent packet and extracts a PEPItem from it.
* (There is only one per <event>.)
*
* @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 {
boolean done = false;
while (!done) {
int eventType = parser.next();
if (eventType == XmlPullParser.START_TAG) {
if (parser.getName().equals("event")) {
} else if (parser.getName().equals("items")) {
// Figure out the node for this event.
String node = parser.getAttributeValue("", "node");
// Get the parser for this kind of node, and if found then parse the node.
PacketExtensionProvider nodeParser = nodeParsers.get(node);
if (nodeParser != null) {
pepItem = nodeParser.parseExtension(parser);
}
}
} else if (eventType == XmlPullParser.END_TAG) {
if (parser.getName().equals("event")) {
done = true;
}
}
}
return pepItem;
}
}