| /* |
| * 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.apache.commons.text.lookup; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.Base64; |
| |
| /** |
| * Decodes Base64 Strings. |
| * |
| * @since 1.5 |
| */ |
| final class Base64DecoderStringLookup extends AbstractStringLookup { |
| |
| /** |
| * Defines the singleton for this class. |
| */ |
| static final Base64DecoderStringLookup INSTANCE = new Base64DecoderStringLookup(); |
| |
| /** |
| * No need to build instances for now. |
| */ |
| private Base64DecoderStringLookup() { |
| // empty |
| } |
| |
| @Override |
| public String lookup(final String key) { |
| if (key == null) { |
| return null; |
| } |
| return new String(Base64.getDecoder().decode(key), StandardCharsets.ISO_8859_1); |
| } |
| |
| } |