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

smack-extensions/src/main/java/org/jivesoftware/smackx/sharedgroups/SharedGroupManager.java

@@ -0,0 +1,56 @@
+/**
+ *
+ * Copyright 2005 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.sharedgroups;
+
+import org.jivesoftware.smack.SmackException.NoResponseException;
+import org.jivesoftware.smack.SmackException.NotConnectedException;
+import org.jivesoftware.smack.XMPPConnection;
+import org.jivesoftware.smack.XMPPException.XMPPErrorException;
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smackx.sharedgroups.packet.SharedGroupsInfo;
+
+import java.util.List;
+
+/**
+ * A SharedGroupManager provides services for discovering the shared groups where a user belongs.<p>
+ *
+ * Important note: This functionality is not part of the XMPP spec and it will only work
+ * with Wildfire.
+ *
+ * @author Gaston Dombiak
+ */
+public class SharedGroupManager {
+
+    /**
+     * Returns the collection that will contain the name of the shared groups where the user
+     * logged in with the specified session belongs.
+     *
+     * @param connection connection to use to get the user's shared groups.
+     * @return collection with the shared groups' name of the logged user.
+     * @throws XMPPErrorException 
+     * @throws NoResponseException 
+     * @throws NotConnectedException 
+     */
+    public static List<String> getSharedGroups(XMPPConnection connection) throws NoResponseException, XMPPErrorException, NotConnectedException {
+        // Discover the shared groups of the logged user
+        SharedGroupsInfo info = new SharedGroupsInfo();
+        info.setType(IQ.Type.GET);
+
+        SharedGroupsInfo result = (SharedGroupsInfo) connection.createPacketCollectorAndSend(info).nextResultOrThrow();
+        return result.getGroups();
+    }
+}

smack-extensions/src/main/java/org/jivesoftware/smackx/sharedgroups/packet/SharedGroupsInfo.java

@@ -0,0 +1,88 @@
+/**
+ *
+ * Copyright 2005 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.sharedgroups.packet;
+
+import org.jivesoftware.smack.packet.IQ;
+import org.jivesoftware.smack.provider.IQProvider;
+import org.xmlpull.v1.XmlPullParser;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * IQ packet used for discovering the user's shared groups and for getting the answer back
+ * from the server.<p>
+ *
+ * Important note: This functionality is not part of the XMPP spec and it will only work
+ * with Wildfire.
+ *
+ * @author Gaston Dombiak
+ */
+public class SharedGroupsInfo extends IQ {
+
+    private List<String> groups = new ArrayList<String>();
+
+    /**
+     * Returns a collection with the shared group names returned from the server.
+     *
+     * @return collection with the shared group names returned from the server.
+     */
+    public List<String> getGroups() {
+        return groups;
+    }
+
+    public String getChildElementXML() {
+        StringBuilder buf = new StringBuilder();
+        buf.append("<sharedgroup xmlns=\"http://www.jivesoftware.org/protocol/sharedgroup\">");
+        for (String group : groups) {
+            buf.append("<group>").append(group).append("</group>");
+        }
+        buf.append("</sharedgroup>");
+        return buf.toString();
+    }
+
+    /**
+     * Internal Search service Provider.
+     */
+    public static class Provider implements IQProvider {
+
+        /**
+         * Provider Constructor.
+         */
+        public Provider() {
+            super();
+        }
+
+        public IQ parseIQ(XmlPullParser parser) throws Exception {
+            SharedGroupsInfo groupsInfo = new SharedGroupsInfo();
+
+            boolean done = false;
+            while (!done) {
+                int eventType = parser.next();
+                if (eventType == XmlPullParser.START_TAG && parser.getName().equals("group")) {
+                    groupsInfo.getGroups().add(parser.nextText());
+                }
+                else if (eventType == XmlPullParser.END_TAG) {
+                    if (parser.getName().equals("sharedgroup")) {
+                        done = true;
+                    }
+                }
+            }
+            return groupsInfo;
+        }
+    }
+}