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Implement language fallback. Fix issue #492.

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This commit is contained in:
Frédéric Wang 2013-08-02 17:04:46 +02:00
parent 11959f25ab
commit de34c0ec7b
1 changed files with 17 additions and 3 deletions
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20
unpacked/MathJax.js
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@ -1068,7 +1068,9 @@ MathJax.Localization = {
en: {menuTitle: "English", isLoaded: true}, // nothing needs to be loaded for this
de: {menuTitle: "Deutsch"},
fr: {menuTitle: "Fran\u00E7ais"},
it: {menuTitle: "Italiano"}
it: {menuTitle: "Italiano"},
pt: {menuTitle: "portugus\u00EA", remap: "pt-br"},
"pt-br": {menuTitle: "portugu\u00EAs do Brasil"}
},
//
@ -1394,8 +1396,20 @@ MathJax.Localization = {
// Set the current language
//
setLocale: function(locale) {
// don't set it if there isn't a definition for it
if (this.strings[locale]) {this.locale = locale}
// Selection algorithm:
// 1) Downcase locale name (e.g. "en-US" => "en-us")
// 2) Try a parent language (e.g. "en-us" => "en")
// 3) Try the fallback specified in the data (e.g. "pt" => "pt-br")
// 4) Otherwise don't change the locale.
if (!locale) return;
locale = locale.toLowerCase();
while (!this.strings[locale]) {
var dashPos = locale.lastIndexOf("-");
if (dashPos === -1) return;
locale = locale.substring(0, dashPos);
}
var remap = this.strings[locale].remap;
this.locale = remap ? remap : locale;
if (MathJax.Menu) {this.loadDomain("MathMenu")}
},