/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache license, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the license for the specific language governing permissions and |
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* limitations under the license. |
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*/ |
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package org.apache.commons.text.lookup; |
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import java.io.UnsupportedEncodingException; |
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import java.net.URLEncoder; |
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import java.nio.charset.StandardCharsets; |
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/** |
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* Encodes URL Strings using the UTF-8 encoding. |
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* |
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* @see URLEncoder |
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* @since 1.5 |
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*/ |
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final class UrlEncoderStringLookup extends AbstractStringLookup { |
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/** |
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* Defines the singleton for this class. |
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*/ |
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static final UrlEncoderStringLookup INSTANCE = new UrlEncoderStringLookup(); |
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/** |
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* This ctor is not private to allow Mockito spying. |
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*/ |
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UrlEncoderStringLookup() { |
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// empty |
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} |
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String encode(final String key, final String enc) throws UnsupportedEncodingException { |
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return URLEncoder.encode(key, enc); |
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} |
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@Override |
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public String lookup(final String key) { |
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if (key == null) { |
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return null; |
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} |
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final String enc = StandardCharsets.UTF_8.name(); |
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try { |
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return encode(key, enc); |
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} catch (final UnsupportedEncodingException e) { |
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// Can't happen since UTF-8 is required by the Java specification. |
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throw IllegalArgumentExceptions.format(e, "%s: source=%s, encoding=%s", e, key, enc); |
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} |
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} |
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} |