XmlEntities


1   /*
2   
3   This software is OSI Certified Open Source Software.
4   OSI Certified is a certification mark of the Open Source Initiative.
5   
6   The license (Mozilla version 1.0) can be read at the MMBase site.
7   See http://www.MMBase.org/license
8   
9   */
10  
11  package org.mmbase.util.transformers;
12  
13  import java.io.Reader  ;
14  import java.io.Writer  ;
15  
16  import org.mmbase.util.logging.Logger;
17  import org.mmbase.util.logging.Logging;
18  
19  /**
20   * Any non-ASCII character will be replaced by an XML-entity.
21   * 
22   * @author Michiel Meeuwissen
23   * @since MMBase-1.7
24   * @version $Id: XmlEntities.java,v 1.4 2003/07/01 11:03:33 michiel Exp $
25   */
26  public class XmlEntities extends ReaderTransformer implements CharTransformer {
27      private static Logger log = Logging.getLoggerInstance(XmlEntities.class);
28        
29      public Writer   transform(Reader   r, Writer   w) {
30          try {
31              while (true) {
32                  int c = r.read();
33                  if (c == -1) break;
34                  if ( // c >= '\u0020' && Control character
35                      c <= '\u007f') {
36                      w.write(c); // ASCII character, simply write
37                  } else {
38                      w.write("&#" + c + ";"); // construct XML style unicode escaping
39                  }
40              }
41          } catch (java.io.IOException   e) {
42              log.error(e.toString());
43          }
44          return w;
45      }
46      public String   toString() {
47          return "XMLENTITIES";
48      }
49  }
50

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