001/** 002 * 003 * Copyright © 2014-2021 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smack.util.stringencoder.android; 018 019import java.nio.charset.StandardCharsets; 020 021import org.jivesoftware.smack.util.stringencoder.StringEncoder; 022 023import android.util.Base64; 024 025/** 026 * An URL-safe Base64 encoder. 027 * @author Florian Schmaus 028 */ 029public final class AndroidBase64UrlSafeEncoder implements StringEncoder<String> { 030 031 /** 032 * An instance of this encoder. 033 */ 034 public static AndroidBase64UrlSafeEncoder INSTANCE = new AndroidBase64UrlSafeEncoder(); 035 036 private static final int BASE64_ENCODER_FLAGS = Base64.URL_SAFE | Base64.NO_WRAP; 037 038 private AndroidBase64UrlSafeEncoder() { 039 // Use getInstance() 040 } 041 042 @Override 043 public String encode(String string) { 044 return Base64.encodeToString(string.getBytes(StandardCharsets.UTF_8), BASE64_ENCODER_FLAGS); 045 } 046 047 @Override 048 public String decode(String string) { 049 byte[] bytes = Base64.decode(string, BASE64_ENCODER_FLAGS); 050 return new String(bytes, StandardCharsets.UTF_8); 051 } 052 053}