fix(ngLocale): fix i18n code-generation to support get_vf_, decimals_, and get_wt_

The updated Closure I18N code relies on these methods to enhance the localization quality.

This fix prevents ngLocale files from referencing undefined values. In the short term, this
means adding references to versions of these methods in locales where they are necessary.

Author: caitp

i18n/src/closureI18nExtractor.js

@@ -87,7 +87,11 @@ function pluralExtractor(content, localeInfo) {
       continue;
     }
     var temp = goog.i18n.pluralRules.select.toString().
-        replace(/goog.i18n.pluralRules.Keyword/g, 'PLURAL_CATEGORY').replace(/\n/g, '');
+        replace(/goog\.i18n\.pluralRules\.Keyword/g, 'PLURAL_CATEGORY').
+        replace(/goog\.i18n\.pluralRules\.get_vf_/g, 'getVF').
+        replace(/goog\.i18n\.pluralRules\.get_wt_/g, 'getWT').
+        replace(/goog\.i18n\.pluralRules\.decimals_/g, 'getDecimals').
+        replace(/\n/g, '');
 
     ///@@ is a crazy place holder to be replaced before writing to file
     localeInfo[localeIds[i]].pluralCat = "@@" + temp + "@@";
@@ -158,15 +162,39 @@ function outputLocale(localeInfo, localeID) {
   }
   localeObj.id = correctedLocaleId(localeID);
 
-  var prefix =
-      "'use strict';\n" +
-      'angular.module("ngLocale", [], ["$provide", function($provide) {\n' +
-          'var PLURAL_CATEGORY = {' +
-          'ZERO: "zero", ONE: "one", TWO: "two", FEW: "few", MANY: "many", OTHER: "other"' +
-          '};\n' +
-          '$provide.value("$locale", ';
-
-  var suffix = ');\n}]);';
+  var getDecimals = [
+    'function getDecimals(n) {',
+    '  n = n + \'\';',
+    '  var i = n.indexOf(\'.\');',
+    '  return (i == -1) ? 0 : n.length - i - 1;',
+    '}', '', ''
+  ].join('\n');
+
+  var getVF = [
+    'function getVF(n, opt_precision) {',
+    '  var v = opt_precision;', '',
+    '  if (undefined === v) {',
+    '    v = Math.min(getDecimals(n), 3);',
+    '  }', '',
+    '  var base = Math.pow(10, v);',
+    '  var f = ((n * base) | 0) % base;',
+    '  return {v: v, f: f};',
+    '}', '', ''
+  ].join('\n');
+
+  var getWT =
+  [
+    'function getWT(v, f) {',
+    '  if (f === 0) {',
+    '    return {w: 0, t: 0};',
+    '  }', '',
+    '  while ((f % 10) === 0) {',
+    '    f /= 10;',
+    '    v--;',
+    '  }', '',
+    '  return {w: v, t: f};',
+    '}', '', ''
+  ].join('\n');
 
   localeObj = {
     DATETIME_FORMATS: localeObj.DATETIME_FORMATS,
@@ -176,6 +204,26 @@ function outputLocale(localeInfo, localeID) {
   };
 
   var content = serializeContent(localeInfo[localeID]);
+  if (content.indexOf('getVF(') < 0) {
+    getVF = '';
+  }
+  if (content.indexOf('getWT(') < 0) {
+    getWT = '';
+  }
+  if (!getVF && content.indexOf('getDecimals(') < 0) {
+    getDecimals = '';
+  }
+
+  var prefix =
+      "'use strict';\n" +
+      'angular.module("ngLocale", [], ["$provide", function($provide) {\n' +
+          'var PLURAL_CATEGORY = {' +
+          'ZERO: "zero", ONE: "one", TWO: "two", FEW: "few", MANY: "many", OTHER: "other"' +
+          '};\n' +
+          getDecimals + getVF + getWT +
+          '$provide.value("$locale", ';
+
+  var suffix = ');\n}]);';
 
   return prefix + content + suffix;
 }