| /* |
| * 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.io.UnsupportedEncodingException; |
| import java.net.URLEncoder; |
| import java.nio.charset.StandardCharsets; |
| |
| /** |
| * Encodes URL Strings using the UTF-8 encoding. |
| * |
| * @see URLEncoder |
| * @since 1.5 |
| */ |
| final class UrlEncoderStringLookup extends AbstractStringLookup { |
| |
| /** |
| * Defines the singleton for this class. |
| */ |
| static final UrlEncoderStringLookup INSTANCE = new UrlEncoderStringLookup(); |
| |
| /** |
| * No need to build instances for now. |
| */ |
| private UrlEncoderStringLookup() { |
| // empty |
| } |
| |
| @Override |
| public String lookup(final String key) { |
| final String enc = StandardCharsets.UTF_8.name(); |
| try { |
| return URLEncoder.encode(key, enc); |
| } catch (final UnsupportedEncodingException e) { |
| throw IllegalArgumentExceptions.format(e, "%s: source=%s, encoding=%s", e, key, enc); |
| } |
| } |
| |
| } |