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Java > Open Source Codes > org > mmbase > util > transformers > UpperCaser


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 JavaDoc;
13 import java.io.Writer JavaDoc;
14
15 import org.mmbase.util.logging.*;
16
17 /**
18  * A 'hello world' for CharTransformers.
19  *
20  * @author Michiel Meeuwissen
21  * @since MMBase-1.7
22  * @version $Id: UpperCaser.java,v 1.4 2003/05/12 11:15:35 michiel Exp $
23  */

24
25 public class UpperCaser extends ReaderTransformer implements CharTransformer {
26     private static Logger log = Logging.getLoggerInstance(UpperCaser.class);
27
28     public Writer JavaDoc transform(Reader JavaDoc r, Writer JavaDoc w) {
29         try {
30             log.debug("Starting uppercasing");
31             while (true) {
32                 int c = r.read();
33                 if (c == -1) break;
34                 w.write(Character.toUpperCase((char) c));
35             }
36             log.debug("Finished uppercasing");
37         } catch (java.io.IOException JavaDoc e) {
38             log.error(e.toString());
39         }
40         return w;
41     }
42
43
44     public String JavaDoc toString() {
45         return "uppercaser";
46     }
47 }
48
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