1 |
14 |
jlechner |
/* LocaleHelper.java -- helper routines for localization
|
2 |
|
|
Copyright (C) 2004, 2005 Free Software Foundation, Inc.
|
3 |
|
|
|
4 |
|
|
This file is part of GNU Classpath.
|
5 |
|
|
|
6 |
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
7 |
|
|
it under the terms of the GNU General Public License as published by
|
8 |
|
|
the Free Software Foundation; either version 2, or (at your option)
|
9 |
|
|
any later version.
|
10 |
|
|
|
11 |
|
|
GNU Classpath is distributed in the hope that it will be useful, but
|
12 |
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
|
|
General Public License for more details.
|
15 |
|
|
|
16 |
|
|
You should have received a copy of the GNU General Public License
|
17 |
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
18 |
|
|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
19 |
|
|
02110-1301 USA.
|
20 |
|
|
|
21 |
|
|
Linking this library statically or dynamically with other modules is
|
22 |
|
|
making a combined work based on this library. Thus, the terms and
|
23 |
|
|
conditions of the GNU General Public License cover the whole
|
24 |
|
|
combination.
|
25 |
|
|
|
26 |
|
|
As a special exception, the copyright holders of this library give you
|
27 |
|
|
permission to link this library with independent modules to produce an
|
28 |
|
|
executable, regardless of the license terms of these independent
|
29 |
|
|
modules, and to copy and distribute the resulting executable under
|
30 |
|
|
terms of your choice, provided that you also meet, for each linked
|
31 |
|
|
independent module, the terms and conditions of the license of that
|
32 |
|
|
module. An independent module is a module which is not derived from
|
33 |
|
|
or based on this library. If you modify this library, you may extend
|
34 |
|
|
this exception to your version of the library, but you are not
|
35 |
|
|
obligated to do so. If you do not wish to do so, delete this
|
36 |
|
|
exception statement from your version. */
|
37 |
|
|
|
38 |
|
|
|
39 |
|
|
package gnu.java.locale;
|
40 |
|
|
|
41 |
|
|
import java.util.Locale;
|
42 |
|
|
import java.util.MissingResourceException;
|
43 |
|
|
import java.util.ResourceBundle;
|
44 |
|
|
|
45 |
|
|
/**
|
46 |
|
|
* This class provides common helper methods
|
47 |
|
|
* for handling localized data.
|
48 |
|
|
*
|
49 |
|
|
* @author Andrew John Hughes (gnu_andrew@member.fsf.org)
|
50 |
|
|
*
|
51 |
|
|
* @see java.util.Locale
|
52 |
|
|
* @see java.util.ResourceBundle
|
53 |
|
|
*/
|
54 |
|
|
public class LocaleHelper
|
55 |
|
|
{
|
56 |
|
|
/**
|
57 |
|
|
* This method is used by the localized name lookup methods to retrieve
|
58 |
|
|
* the localized name of a particular piece of locale data.
|
59 |
|
|
* If the display name can not be localized to the supplied
|
60 |
|
|
* locale, it will fall back on other output in the following order:
|
61 |
|
|
*
|
62 |
|
|
* <ul>
|
63 |
|
|
* <li>the localized name in the default locale</li>
|
64 |
|
|
* <li>the localized name in English (optional)</li>
|
65 |
|
|
* <li>the localized name in the root locale bundle (optional)</li>
|
66 |
|
|
* <li>the localized input string</li>
|
67 |
|
|
* </ul>
|
68 |
|
|
* <p>
|
69 |
|
|
* If the supplied key is merely the empty string, then the empty string is
|
70 |
|
|
* returned.
|
71 |
|
|
* </p>
|
72 |
|
|
*
|
73 |
|
|
* @param inLocale the locale to use for formatting the display string.
|
74 |
|
|
* @param key the locale data used as a key to the localized lookup tables.
|
75 |
|
|
* @param name the name of the hashtable containing the localized data.
|
76 |
|
|
* @param checkEnglish true if the method should fall back on data
|
77 |
|
|
* from the English locale.
|
78 |
|
|
* @param checkRoot true if the method should fall back on data from the
|
79 |
|
|
* unlocalized root locale.
|
80 |
|
|
* @return a <code>String</code>, hopefully containing the localized
|
81 |
|
|
* variant of the input data.
|
82 |
|
|
* @throws NullPointerException if <code>inLocale</code> is null.
|
83 |
|
|
*/
|
84 |
|
|
public static String getLocalizedString(Locale inLocale, String key,
|
85 |
|
|
String name, boolean checkEnglish,
|
86 |
|
|
boolean checkRoot)
|
87 |
|
|
{
|
88 |
|
|
String localizedString;
|
89 |
|
|
String property;
|
90 |
|
|
|
91 |
|
|
if (key.equals(""))
|
92 |
|
|
return "";
|
93 |
|
|
property = name + "." + key;
|
94 |
|
|
/* Localize to inLocale */
|
95 |
|
|
try
|
96 |
|
|
{
|
97 |
|
|
localizedString =
|
98 |
|
|
ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
|
99 |
|
|
inLocale).getString(property);
|
100 |
|
|
}
|
101 |
|
|
catch (MissingResourceException exception)
|
102 |
|
|
{
|
103 |
|
|
localizedString = null;
|
104 |
|
|
}
|
105 |
|
|
/* Localize to default locale */
|
106 |
|
|
if (localizedString == null)
|
107 |
|
|
{
|
108 |
|
|
try
|
109 |
|
|
{
|
110 |
|
|
ResourceBundle bundle;
|
111 |
|
|
|
112 |
|
|
bundle =
|
113 |
|
|
ResourceBundle.getBundle("gnu.java.locale.LocaleInformation");
|
114 |
|
|
localizedString = bundle.getString(property);
|
115 |
|
|
}
|
116 |
|
|
catch (MissingResourceException exception)
|
117 |
|
|
{
|
118 |
|
|
localizedString = null;
|
119 |
|
|
}
|
120 |
|
|
}
|
121 |
|
|
/* Localize to English */
|
122 |
|
|
if (localizedString == null && checkEnglish)
|
123 |
|
|
{
|
124 |
|
|
try
|
125 |
|
|
{
|
126 |
|
|
localizedString =
|
127 |
|
|
ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
|
128 |
|
|
Locale.ENGLISH).getString(property);
|
129 |
|
|
}
|
130 |
|
|
catch (MissingResourceException exception)
|
131 |
|
|
{
|
132 |
|
|
localizedString = null;
|
133 |
|
|
}
|
134 |
|
|
}
|
135 |
|
|
/* Return unlocalized version */
|
136 |
|
|
if (localizedString == null && checkRoot)
|
137 |
|
|
{
|
138 |
|
|
try
|
139 |
|
|
{
|
140 |
|
|
localizedString =
|
141 |
|
|
ResourceBundle.getBundle("gnu.java.locale.LocaleInformation",
|
142 |
|
|
new Locale("","","")
|
143 |
|
|
).getString(property);
|
144 |
|
|
}
|
145 |
|
|
catch (MissingResourceException exception)
|
146 |
|
|
{
|
147 |
|
|
localizedString = null;
|
148 |
|
|
}
|
149 |
|
|
}
|
150 |
|
|
/* Return original input string */
|
151 |
|
|
if (localizedString == null)
|
152 |
|
|
{
|
153 |
|
|
localizedString = key;
|
154 |
|
|
}
|
155 |
|
|
return localizedString;
|
156 |
|
|
}
|
157 |
|
|
}
|
158 |
|
|
|