Escaping CDATA sections.

 

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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.    
 */

/**
 * This class is for escaping CDATA sections.
 * 
 * @author <a href="mailto:wglass@apache.org">Will Glass-Husain</a>
 * @author <a href="mailto:jon@latchkey.com">Jon S. Stevens</a>
 * @version $Id: Escape.java 463298 2006-10-12 16:10:32Z henning $
 */
public class Escape {
  /**
   * 
   */
  public static final String LINE_SEPARATOR = System.getProperty("line.separator");

  /**
   * Empty constructor
   */
  public Escape() {
    // left blank on purpose
  }

  /**
   * Do the escaping.
   * 
   * @param st
   * @return The escaped text.
   */
  public static final String getText(String st) {
    StringBuffer buff = new StringBuffer();
    char[] block = st.toCharArray();
    String stEntity = null;
    int i, last;

    for (i = 0, last = 0; i < block.length; i++) {
      switch (block[i]) {
      case '<':
        stEntity = "&lt;";
        break;
      case '>':
        stEntity = "&gt;";
        break;
      case '&':
        stEntity = "&amp;";
        break;
      case '"':
        stEntity = "&quot;";
        break;
      case '\n':
        stEntity = LINE_SEPARATOR;
        break;
      default:
        /* no-op */
        break;
      }
      if (stEntity != null) {
        buff.append(block, last, i - last);
        buff.append(stEntity);
        stEntity = null;
        last = i + 1;
      }
    }
    if (last < block.length) {
      buff.append(block, last, i - last);
    }
    return buff.toString();
  }
}

Related examples in the same category

1.	Set Data to Character Data
2.	Get substring from CharacterData
3.	Append and insert data to CharacterData
4.	Delete data from CharacterData
5.	Replace Data in CharacterData
6.	Converting CDATA Nodes into Text Nodes While Parsing an XML File
7.	Get character data (CDATA) from xml document
8.	Strip CDATA

Escaping CDATA sections. : CDATA « XML « Java

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