1/** 2 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 3 * you may not use this file except in compliance with the License. 4 * You may obtain a copy of the License at 5 * 6 * http://www.apache.org/licenses/LICENSE-2.0 7 * 8 * Unless required by applicable law or agreed to in writing, software 9 * distributed under the License is distributed on an "AS IS" BASIS, 10 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 * See the License for the specific language governing permissions and 12 * limitations under the License. 13 */ 14 15package org.jivesoftware.smack.util; 16 17 18/** 19 * A Base 64 encoding implementation that generates filename and Url safe encodings. 20 * 21 * <p> 22 * Note: This does NOT produce standard Base 64 encodings, but a variant as defined in 23 * Section 4 of RFC3548: 24 * <a href="http://www.faqs.org/rfcs/rfc3548.html">http://www.faqs.org/rfcs/rfc3548.html</a>. 25 * 26 * @author Robin Collier 27 */ 28public class Base64FileUrlEncoder implements StringEncoder { 29 30 private static Base64FileUrlEncoder instance = new Base64FileUrlEncoder(); 31 32 private Base64FileUrlEncoder() { 33 // Use getInstance() 34 } 35 36 public static Base64FileUrlEncoder getInstance() { 37 return instance; 38 } 39 40 public String encode(String s) { 41 return Base64.encodeBytes(s.getBytes(), Base64.URL_SAFE); 42 } 43 44 public String decode(String s) { 45 return new String(Base64.decode(s, Base64.URL_SAFE)); 46 } 47 48} 49