1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
Components.utils.import("resource://gre/modules/Services.jsm");
Components.utils.import('resource://greasemonkey/util.js');
const EXPORTED_SYMBOLS = ['getBestLocaleMatch'];
// This function tries to find the best matching locale.
// Locales should be given in the form "lang[-COUNTRY]".
// If an exact match (i.e. both lang and country match) can be found, it is
// returned. Otherwise, a partial match based on the lang part is attempted.
// Partial matches without country are preferred over lang matches with
// non-matching country.
// If no locale matches, null is returned.
function getBestLocaleMatch(aPreferred, aAvailable) {
var preferredLang = aPreferred.split("-")[0];
var langMatch, partialMatch = null;
for (var i = 0, current; current = aAvailable[i]; i++) {
// Both lang and country match
if (current == aPreferred)
return current;
if (current == preferredLang) {
// Only lang matches, no country
langMatch = current;
} else if (current.split("-")[0] == preferredLang) {
// Only lang matches, non-matching country
partialMatch = current;
}
}
return langMatch || partialMatch;
}
|
