SMACK-361 Added support for Entity Capabilities.

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/branches/smack_3_3_0@13560 b35dd754-fafc-0310-a699-88a17e54d16e

source/org/jivesoftware/smack/util/Base64Encoder.java

@@ -0,0 +1,44 @@
+/**
+ * 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.smack.util;
+
+
+/**
+ * @author Florian Schmaus
+ */
+public class Base64Encoder implements StringEncoder {
+
+    private static Base64Encoder instance;
+
+    private Base64Encoder() {
+        // Use getInstance()
+    }
+
+    public static Base64Encoder getInstance() {
+        if (instance == null) {
+            instance = new Base64Encoder();
+        }
+        return instance;
+    }
+
+    public String encode(String s) {
+        return Base64.encodeBytes(s.getBytes());
+    }
+
+    public String decode(String s) {
+        return new String(Base64.decode(s));
+    }
+
+}