01: // Copyright (C) 1998-2001 by Jason Hunter <jhunter_AT_acm_DOT_org>.
02: // All rights reserved. Use of this class is limited.
03: // Please see the LICENSE for more information.
04:
05: package com.oreilly.servlet;
06:
07: import java.util.*;
08:
09: /**
10: * A mapping to determine the (somewhat arbitrarily) preferred charset for
11: * a given locale. Supports all locales recognized in JDK 1.1. This
12: * class is used by the LocaleNegotiator.
13: *
14: * @see com.oreilly.servlet.LocaleNegotiator
15: *
16: * @author <b>Jason Hunter</b>, Copyright © 1998
17: * @version 1.0, 98/09/18
18: */
19: public class LocaleToCharsetMap {
20:
21: private static Hashtable map;
22:
23: static {
24: map = new Hashtable();
25:
26: map.put("ar", "ISO-8859-6");
27: map.put("be", "ISO-8859-5");
28: map.put("bg", "ISO-8859-5");
29: map.put("ca", "ISO-8859-1");
30: map.put("cs", "ISO-8859-2");
31: map.put("da", "ISO-8859-1");
32: map.put("de", "ISO-8859-1");
33: map.put("el", "ISO-8859-7");
34: map.put("en", "ISO-8859-1");
35: map.put("es", "ISO-8859-1");
36: map.put("et", "ISO-8859-1");
37: map.put("fi", "ISO-8859-1");
38: map.put("fr", "ISO-8859-1");
39: map.put("hr", "ISO-8859-2");
40: map.put("hu", "ISO-8859-2");
41: map.put("is", "ISO-8859-1");
42: map.put("it", "ISO-8859-1");
43: map.put("iw", "ISO-8859-8");
44: map.put("ja", "Shift_JIS");
45: map.put("ko", "EUC-KR"); // Requires JDK 1.1.6
46: map.put("lt", "ISO-8859-2");
47: map.put("lv", "ISO-8859-2");
48: map.put("mk", "ISO-8859-5");
49: map.put("nl", "ISO-8859-1");
50: map.put("no", "ISO-8859-1");
51: map.put("pl", "ISO-8859-2");
52: map.put("pt", "ISO-8859-1");
53: map.put("ro", "ISO-8859-2");
54: map.put("ru", "ISO-8859-5");
55: map.put("sh", "ISO-8859-5");
56: map.put("sk", "ISO-8859-2");
57: map.put("sl", "ISO-8859-2");
58: map.put("sq", "ISO-8859-2");
59: map.put("sr", "ISO-8859-5");
60: map.put("sv", "ISO-8859-1");
61: map.put("tr", "ISO-8859-9");
62: map.put("uk", "ISO-8859-5");
63: map.put("zh", "GB2312");
64: map.put("zh_TW", "Big5");
65:
66: }
67:
68: /**
69: * Gets the preferred charset for the given locale, or null if the locale
70: * is not recognized.
71: *
72: * @param loc the locale
73: * @return the preferred charset
74: */
75: public static String getCharset(Locale loc) {
76: String charset;
77:
78: // Try for an full name match (may include country)
79: charset = (String) map.get(loc.toString());
80: if (charset != null)
81: return charset;
82:
83: // If a full name didn't match, try just the language
84: charset = (String) map.get(loc.getLanguage());
85: return charset; // may be null
86: }
87: }
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