| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.waveprotocol.wave.federation.xmpp; |
| |
| import com.google.protobuf.AbstractMessageLite; |
| import com.google.protobuf.ByteString; |
| |
| import org.apache.commons.codec.binary.Base64; |
| |
| import java.nio.charset.Charset; |
| |
| /** |
| * Utility class for encoding and decoding ByteStrings, byte arrays and encoding |
| * generic protocol buffers. |
| * |
| * @author arb@google.com (Anthony Baxter) |
| * @author thorogood@google.com (Sam Thorogood) |
| */ |
| public final class Base64Util { |
| |
| // Character set for all encoding and decoding. Base64 can be correctly |
| // represented using UTF-8. |
| private static final Charset CHAR_SET = Charset.forName("UTF-8"); |
| |
| /** |
| * Utility class only, cannot be instantiated. |
| */ |
| private Base64Util() { |
| } |
| |
| public static String encode(ByteString bs) { |
| return new String(Base64.encodeBase64(bs.toByteArray()), CHAR_SET); |
| } |
| |
| public static String encode(byte[] ba) { |
| return new String(Base64.encodeBase64(ba), CHAR_SET); |
| } |
| |
| public static String encode(AbstractMessageLite message) { |
| return new String(Base64.encodeBase64(message.toByteArray()), CHAR_SET); |
| } |
| |
| public static byte[] decodeFromArray(String str) { |
| return Base64.decodeBase64(str.getBytes(CHAR_SET)); |
| } |
| |
| public static ByteString decode(String str) { |
| return ByteString.copyFrom(Base64.decodeBase64(str.getBytes(CHAR_SET))); |
| } |
| } |