StringEscapeUtils.java

/* lang/tags/LANG_3_2_1/src/main/java/org/apache/commons/lang3/StringEscapeUtils.java

 * 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.lang3;


import org.apache.commons.lang3.text.translate.AggregateTranslator;
import org.apache.commons.lang3.text.translate.CharSequenceTranslator;
import org.apache.commons.lang3.text.translate.EntityArrays;
import org.apache.commons.lang3.text.translate.LookupTranslator;
import org.apache.commons.lang3.text.translate.NumericEntityUnescaper;

/**
 * <p>Escapes and unescapes {@code String}s for
 * Java, Java Script, HTML and XML.</p>
 *
 * <p>#ThreadSafe#</p>
 * @since 2.0
 * @version $Id$
 */
public class StringEscapeUtils {
    /* UNESCAPE TRANSLATORS */

    /**
     * Translator object for unescaping escaped HTML 4.0. 
     * 
     * While {@link #unescapeHtml4(String)} is the expected method of use, this 
     * object allows the HTML unescaping functionality to be used 
     * as the foundation for a custom translator. 
     *
     * @since 3.0
     */
    public static final CharSequenceTranslator UNESCAPE_HTML4 = 
        new AggregateTranslator(
            new LookupTranslator(EntityArrays.BASIC_UNESCAPE()),
            new LookupTranslator(EntityArrays.ISO8859_1_UNESCAPE()),
            new LookupTranslator(EntityArrays.HTML40_EXTENDED_UNESCAPE()),
            new NumericEntityUnescaper()
        );
}