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/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
//
// dojo i18n! plugin
//
// We choose to include our own plugin in hopes of leveraging functionality already contained in dojo
// and thereby reducing the size of the plugin compared to various loader implementations. Naturally, this
// allows AMD loaders to be used without their plugins.
// CAUTION, this module may return improper results if the AMD loader does not support toAbsMid and client
// code passes relative plugin resource module ids. In that case, you should consider using the i18n! plugin
// that comes with your loader.
define(["dojo"], function(dojo) {
var
nlsRe=
// regexp for reconstructing the master bundle name from parts of the regexp match
// nlsRe.exec("foo/bar/baz/nls/en-ca/foo") gives:
// ["foo/bar/baz/nls/en-ca/foo", "foo/bar/baz/nls/", "/", "/", "en-ca", "foo"]
// nlsRe.exec("foo/bar/baz/nls/foo") gives:
// ["foo/bar/baz/nls/foo", "foo/bar/baz/nls/", "/", "/", "foo", ""]
// so, if match[5] is blank, it means this is the top bundle definition.
// courtesy of http://requirejs.org
/(^.*(^|\/)nls(\/|$))([^\/]*)\/?([^\/]*)/,
getAvailableLocales= function(
root,
locale,
bundlePath,
bundleName
){
// return a vector of module ids containing all available locales with respect to the target locale
// For example, assuming:
// * the root bundle indicates specific bundles for "fr" and "fr-ca",
// * bundlePath is "myPackage/nls"
// * bundleName is "myBundle"
// Then a locale argument of "fr-ca" would return
// ["myPackage/nls/myBundle", "myPackage/nls/fr/myBundle", "myPackage/nls/fr-ca/myBundle"]
// Notice that bundles are returned least-specific to most-specific, starting with the root.
for(var result= [bundlePath + bundleName], localeParts= locale.split("-"), current= "", i= 0; i<localeParts.length; i++){
current+= localeParts[i];
if(root[current]){
result.push(bundlePath + current + "/" + bundleName);
}
}
return result;
},
cache= {};
return {
load: function(id, require, load){
// note: id may be relative
var
match= nlsRe.exec(id),
bundlePath= (require.toAbsMid && require.toAbsMid(match[1])) || match[1],
bundleName= match[5] || match[4],
bundlePathAndName= bundlePath + bundleName,
locale= (match[5] && match[4]) || dojo.locale,
target= bundlePathAndName + "/" + locale;
// if we've already resolved this request, just return it
if (cache[target]) {
load(cache[target]);
return;
}
// get the root bundle which instructs which other bundles are required to contruct the localized bundle
require([bundlePathAndName], function(root){
var
current= cache[bundlePathAndName + "/"]= dojo.clone(root.root),
availableLocales= getAvailableLocales(root, locale, bundlePath, bundleName);
require(availableLocales, function(){
for (var i= 1; i<availableLocales.length; i++){
cache[bundlePathAndName + "/" + availableLocales[i]]= current= dojo.mixin(dojo.clone(current), arguments[i]);
}
// target may not have been resolve (e.g., maybe only "fr" exists when "fr-ca" was requested)
cache[target]= current;
load(current);
});
});
},
cache: function(mid, value){
cache[mid]= value;
}
};
});
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