LocaleToCharsetMap


1   
2   
3   /*
4    * The contents of this file are subject to the terms
5    * of the Common Development and Distribution License
6    * (the "License").  You may not use this file except
7    * in compliance with the License.
8    *
9    * You can obtain a copy of the license at
10   * glassfish/bootstrap/legal/CDDLv1.0.txt or
11   * https://glassfish.dev.java.net/public/CDDLv1.0.html.
12   * See the License for the specific language governing
13   * permissions and limitations under the License.
14   *
15   * When distributing Covered Code, include this CDDL
16   * HEADER in each file and include the License file at
17   * glassfish/bootstrap/legal/CDDLv1.0.txt.  If applicable,
18   * add the following below this CDDL HEADER, with the
19   * fields enclosed by brackets "[]" replaced with your
20   * own identifying information: Portions Copyright [yyyy]
21   * [name of copyright owner]
22   *
23   * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24   *
25   * Portions Copyright Apache Software Foundation.
26   */ 
27  
28  /*
29   *
30   * This class was originally written by Jason Hunter <jhunter@acm.org>
31   * as part of the book "Java Servlet Programming" (O'Reilly).  
32   * See http://www.servlets.com/book for more information.
33   * Used by Sun Microsystems with permission.
34   *
35   */
36  
37  package org.apache.tomcat.util.http;
38  
39  import java.util.*;
40  
41  /** 
42   * A mapping to determine the (somewhat arbitrarily) preferred charset for 
43   * a given locale.  Supports all locales recognized in JDK 1.1.
44   * This class was originally written by Jason Hunter [jhunter@acm.org]
45   * as part of the book "Java Servlet Programming" (O'Reilly).
46   * See <a HREF="http://www.servlets.com/book">
47   * http://www.servlets.com/book</a> for more information.
48   * Used by Sun Microsystems with permission.
49   */
50  public class LocaleToCharsetMap {
51  
52    private static Hashtable map;
53  
54    static {
55      map = new Hashtable();
56  
57      map.put("ar", "ISO-8859-6");
58      map.put("be", "ISO-8859-5");
59      map.put("bg", "ISO-8859-5");
60      map.put("ca", "ISO-8859-1");
61      map.put("cs", "ISO-8859-2");
62      map.put("da", "ISO-8859-1");
63      map.put("de", "ISO-8859-1");
64      map.put("el", "ISO-8859-7");
65      map.put("en", "ISO-8859-1");
66      map.put("es", "ISO-8859-1");
67      map.put("et", "ISO-8859-1");
68      map.put("fi", "ISO-8859-1");
69      map.put("fr", "ISO-8859-1");
70      map.put("hr", "ISO-8859-2");
71      map.put("hu", "ISO-8859-2");
72      map.put("is", "ISO-8859-1");
73      map.put("it", "ISO-8859-1");
74      map.put("iw", "ISO-8859-8");
75      map.put("ja", "Shift_JIS");
76      map.put("ko", "EUC-KR");     // Requires JDK 1.1.6
77      map.put("lt", "ISO-8859-2");
78      map.put("lv", "ISO-8859-2");
79      map.put("mk", "ISO-8859-5");
80      map.put("nl", "ISO-8859-1");
81      map.put("no", "ISO-8859-1");
82      map.put("pl", "ISO-8859-2");
83      map.put("pt", "ISO-8859-1");
84      map.put("ro", "ISO-8859-2");
85      map.put("ru", "ISO-8859-5");
86      map.put("sh", "ISO-8859-5");
87      map.put("sk", "ISO-8859-2");
88      map.put("sl", "ISO-8859-2");
89      map.put("sq", "ISO-8859-2");
90      map.put("sr", "ISO-8859-5");
91      map.put("sv", "ISO-8859-1");
92      map.put("tr", "ISO-8859-9");
93      map.put("uk", "ISO-8859-5");
94      map.put("zh", "GB2312");
95      map.put("zh_TW", "Big5");
96  
97    }
98  
99    /**
100    * Gets the preferred charset for the given locale, or null if the locale
101    * is not recognized.
102    *
103    * @param loc the locale
104    * @return the preferred charset
105    */
106   public static String   getCharset(Locale loc) {
107     String   charset;
108 
109     // Try for an full name match (may include country)
110     charset = (String  ) map.get(loc.toString());
111     if (charset != null) return charset;
112 
113     // If a full name didn't match, try just the language
114     charset = (String  ) map.get(loc.getLanguage());
115     return charset;  // may be null
116   }
117 }
118
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