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Common utility classes used in most ANC projects.

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/*-
 * Copyright 2011 The American National Corpus
 *
 * Licensed 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.anc.xml;

/**
 * Helper methods for dealing with XML entities.
 * 
 * @author Keith Suderman
 * 
 */
public class Utils
{
   /**
    * Replaces ampersands, less-than, greater-than, and double quotes in the
    * string with the corresponding XML entity.
    * 
    */
   public static final String encode(String s)
   {
      String result = s.replaceAll("&", "&");
      result = result.replaceAll("<", "<");
      result = result.replaceAll(">", ">");
      result = result.replaceAll("\"", """);
      return result;
   }

   public static final String decode(String s)
   {
      String result = s.replaceAll("<", "<");
      result = result.replaceAll(">", ">");
      result = result.replaceAll(""", "\"");
      result = result.replaceAll("&", "&");
      return result;
   }
}