SMACK-272 Add support for XEP-0060 (pubsub)

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@11346 b35dd754-fafc-0310-a699-88a17e54d16e

source/org/jivesoftware/smackx/pubsub/packet/PubSubNamespace.java

@@ -0,0 +1,63 @@
+/**
+ * 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.pubsub.packet;
+
+/**
+ * Defines all the valid namespaces that are used with the {@link PubSub} packet
+ * as defined by the specification.
+ * 
+ * @author Robin Collier
+ */
+public enum PubSubNamespace
+{
+	BASIC(null),
+	ERROR("errors"),
+	EVENT("event"),
+	OWNER("owner");
+	
+	private String fragment;
+	
+	private PubSubNamespace(String fragment)
+	{
+		this.fragment = fragment;
+	}
+	
+	public String getXmlns()
+	{
+		String ns = "http://jabber.org/protocol/pubsub";
+		
+		if (fragment != null)
+			ns += '#' + fragment;
+		
+		return ns;
+	}
+	
+	public String getFragment()
+	{
+		return fragment;
+	}
+
+	public static PubSubNamespace valueOfFromXmlns(String ns)
+	{
+		int index = ns.lastIndexOf('#');
+		
+		if (index != -1)
+		{
+			String suffix = ns.substring(ns.lastIndexOf('#')+1);
+			return valueOf(suffix.toUpperCase());
+		}
+		else
+			return BASIC;
+	}
+}