1d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 2d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License"); 3d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * you may not use this file except in compliance with the License. 4d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * You may obtain a copy of the License at 5d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 6d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * http://www.apache.org/licenses/LICENSE-2.0 7d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 8d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Unless required by applicable law or agreed to in writing, software 9d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * distributed under the License is distributed on an "AS IS" BASIS, 10d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * See the License for the specific language governing permissions and 12d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * limitations under the License. 13d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 14d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 15d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpackage org.jivesoftware.smack.util; 16d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 17d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 18d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen/** 19d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * A Base 64 encoding implementation that generates filename and Url safe encodings. 20d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 21d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * <p> 22d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Note: This does NOT produce standard Base 64 encodings, but a variant as defined in 23d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * Section 4 of RFC3548: 24d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * <a href="http://www.faqs.org/rfcs/rfc3548.html">http://www.faqs.org/rfcs/rfc3548.html</a>. 25d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * 26d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen * @author Robin Collier 27d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen */ 28d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chenpublic class Base64FileUrlEncoder implements StringEncoder { 29d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 30d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private static Base64FileUrlEncoder instance = new Base64FileUrlEncoder(); 31d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 32d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen private Base64FileUrlEncoder() { 33d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen // Use getInstance() 34d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 35d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 36d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public static Base64FileUrlEncoder getInstance() { 37d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return instance; 38d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 39d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 40d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String encode(String s) { 41d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return Base64.encodeBytes(s.getBytes(), Base64.URL_SAFE); 42d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 43d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 44d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen public String decode(String s) { 45d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen return new String(Base64.decode(s, Base64.URL_SAFE)); 46d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen } 47d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen 48d7955ce24d294fb2014c59d11fca184471056f44Shuyi Chen} 49