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'use strict';
angular.module('myApp.i18n', ['izhukov.utils'])
.factory('_', ['$http', '$route', 'Storage', '$locale', function($http, $route, Storage, $locale) {
var locale = 'en-us';
var messages = {};
var fallback_messages = {};
var supported = {
'en-us': 'English'
};
var aliases = {
'en': 'en-us'
};
function insertParams(msgstr, params) {
for (var i in params) {
if (params.hasOwnProperty(i)){
var param = params[i];
var regex = new RegExp('\{ *' + i + '(?: *: *(.*))? *\}');
var match = regex.exec(msgstr);
if (match) {
if (match[1] != undefined) {
param = insertParams(param, match[1].split('|'));
}
msgstr = msgstr.replace(match[0], param.toString().trim());
}
}
}
return msgstr;
}
function _(msgid, params) {
var msgstr = msgid;
if (messages.hasOwnProperty(msgid)) {
msgstr = messages[msgid];
} else if (fallback_messages.hasOwnProperty(msgid)) {
msgstr = fallback_messages[msgid];
console.log('missing message for key ' + msgid + ' for current locale ' + locale);
} else {
console.log('missing message for key ' + msgid);
}
if (arguments.length > 1) {
if (typeof params == 'string') {
Array.prototype.shift.apply(arguments);
msgstr = insertParams(msgstr, arguments);
} else {
msgstr = insertParams(msgstr, params);
}
}
return msgstr;
}
_.supported = function() {
return supported;
};
_.locale = function(newValue) {
if (newValue === undefined) {
return locale;
}
if (!supported.hasOwnProperty(newValue)) {
newValue = 'en-us'; // fallback
}
if (locale != newValue) {
var new_messages = false;
var ngLocaleReady = false;
var onReady = function() {
if (new_messages === false || ngLocaleReady === false) {
// only execute when both - ngLocale and the new messages - are loaded
return;
}
function deepUpdate(oldValue, newValue) {
for (var i in newValue) {
if (i in oldValue && typeof oldValue[i] === 'object' && i !== null){
deepUpdate(oldValue[i], newValue[i]);
} else {
oldValue[i] = newValue[i];
}
}
}
// first we need to explizitly request the new $locale so it gets initialized
// then we recursively update our current $locale with it so all other modules
// already holding a reference to our $locale will get the new values as well
// this hack is necessary because ngLocale just isn't designed to be changed at runtime
deepUpdate($locale, angular.injector(['ngLocale']).get('$locale'));
messages = new_messages;
locale = newValue;
$route.reload();
};
angular.element('<script>')
.appendTo(angular.element('head'))
.on('load', function() {
ngLocaleReady = true;
onReady();
})
.attr('src', 'vendor/angular/i18n/angular-locale_' + newValue + '.js');
$http({method: 'GET', url: 'js/locales/' + newValue + '.json'}).success(function(json){
new_messages = json;
onReady();
});
}
};
$http({method: 'GET', url: 'js/locales/en-us.json'}).success(function(json){
fallback_messages = json;
if (locale == 'en-us') {
messages = fallback_messages;
}
$route.reload();
});
Storage.get('i18n_locale').then(function(newLocale) {
if (!newLocale) {
newLocale = (navigator.language || '').toLowerCase();
newLocale = aliases[newLocale] ? aliases[newLocale] : newLocale;
}
_.locale(newLocale);
});
return _;
}])
.filter('i18n', ['_', function(_) {
return _;
}])
.directive('ngPluralize', ['_', function(_) {
return {
restrict: 'EA',
priority: 1, // execute before built-in ngPluralize
compile: function(element) {
var msgid = element.attr('when');
var msgstr = _(msgid);
element.attr('when', msgstr);
}
}
}])
.directive('myI18n', ['_', function(_) {
return {
restrict: 'EA',
compile: function(element) {
var params = element.children('my-i18n-param:not([name]), [my-i18n-param=""]:not([name])').map(function(index, param) {
return param.outerHTML;
}).toArray();
element.children('my-i18n-param[name], [my-i18n-param]:not([my-i18n-param=""]), [my-i18n-param][name]').each(function(i, param) {
params[angular.element(param).attr('my-i18n-param') || angular.element(param).attr('name')] = param.outerHTML;
});
element.children('my-i18n-param').remove();
var formats = element.attr("my-i18n") || element.attr("msgid") ? element : element.children('my-i18n-format, [my-i18n-format]');
formats.each(function(index, element) {
var format = angular.element(element);
var msgid = format.attr("my-i18n") || format.attr("msgid") || format.attr("my-i18n-format") || format.html().replace(/\s+/g, ' ').trim();
var msgstr = _(msgid, params);
format.html(msgstr);
});
}
}
}]);