SpaceSwallower


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  package org.mmbase.util.transformers;
11  
12  import java.io.Reader  ;
13  import java.io.Writer  ;
14  
15  import org.mmbase.util.logging.*;
16  
17  /**
18   * Swallows all spaces.
19   *
20   * @author Michiel Meeuwissen
21   * @since MMBase-1.8
22   */
23  
24  public class SpaceSwallower extends ReaderTransformer implements CharTransformer {
25  
26      private static final Logger log = Logging.getLoggerInstance(SpaceSwallower.class);
27  
28      public Writer   transform(Reader   r, Writer   w) {
29  
30          try {
31              log.debug("Starting to remove all space.");
32  
33              int c = r.read();
34              while (c != -1) {
35                  if (! Character.isWhitespace((char) c)) {
36                      w.write(c);
37                  }
38                  c = r.read();
39              }
40              log.debug("Finished");
41          } catch (java.io.IOException   e) {
42              log.error(e.toString());
43          }
44          return w;
45      }
46  
47      public String   toString() {
48          return "SPACESWALLOWER";
49      }
50  }
51

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