CaseInsensitiveMap


1   /*
2    *  SSL-Explorer
3    *
4    *  Copyright (C) 2003-2006 3SP LTD. All Rights Reserved
5    *
6    *  This program is free software; you can redistribute it and/or
7    *  modify it under the terms of the GNU General Public License
8    *  as published by the Free Software Foundation; either version 2 of
9    *  the License, or (at your option) any later version.
10   *  This program is distributed in the hope that it will be useful,
11   *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12   *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13   *  GNU General Public License for more details.
14   *
15   *  You should have received a copy of the GNU General Public
16   *  License along with this program; if not, write to the Free Software
17   *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18   */
19              
20  package com.sslexplorer.boot;
21  
22  import java.util.Comparator  ;
23  import java.util.TreeMap  ;
24  
25  /**
26   * An map that stores and retrieves entries in a case insensitive way. For 
27   * example, a value is placed in the map with a key of <b>FOObar</b>. The
28   * value may then be retrieved later using <b>fooBAR</b>.
29   * 
30   * @author Brett Smith <a HREF="mailto: brett@3sp.com">&lt;brett@3sp.com&gt;</a>
31   */
32  public class CaseInsensitiveMap extends TreeMap   {
33  
34      private static final long serialVersionUID = -963451042992843686L;
35  
36      /**
37       * Constructor
38       */
39      public CaseInsensitiveMap() {
40          super(new InsensitiveComparator());
41      }
42      
43      static class InsensitiveComparator implements Comparator   {
44          public int compare(Object   o1, Object   o2) {
45              String   s1 = (String  )o1;
46              String   s2 = (String  )o2;
47              return s1.toUpperCase().compareTo(s2.toUpperCase());
48            }                                    
49            public boolean equals(Object   o) {
50              return compare(this, o)==0;
51            }
52          }
53  
54  }
55
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