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Apache Commons Text is a library focused on algorithms working on strings.

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/*
 * 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 org.apache.commons.text.StringEscapeUtils;

/**
 * Decodes strings according to the XML 1.0 specification.
 *
 * @see StringEscapeUtils#unescapeXml(String)
 */
final class XmlDecoderStringLookup extends AbstractStringLookup {

    /**
     * Defines the singleton for this class.
     */
    static final XmlDecoderStringLookup INSTANCE = new XmlDecoderStringLookup();

    private XmlDecoderStringLookup() {
        // empty
    }

    @Override
    public String lookup(final String key) {
        return StringEscapeUtils.unescapeXml(key);
    }

}