Add Chinese translation

Simplified Chinese and Traditional Chinese

src/i18n/index.jsx

@@ -20,6 +20,8 @@ import messages_sv from './messages_sv.json';
 import messages_th from './messages_th.json';
 import messages_tr from './messages_tr.json';
 import messages_ur from './messages_ur.json';
+import messages_zh_CN from './messages_zh_CN.json';
+import messages_zh_TW from './messages_zh_TW.json';
 
 const MESSAGES = {
   ar: messages_ar,
@@ -39,9 +41,13 @@ const MESSAGES = {
   sv: messages_sv,
   th: messages_th,
   tr: messages_tr,
-  ur: messages_ur
+  ur: messages_ur,
+  'zh-CN': messages_zh_CN,
+  'zh-TW': messages_zh_TW
 }
 
+export const availableLocales = Object.keys(MESSAGES);
+
 const i18n = new Polyglot({ allowMissing: true });
 
 i18n.init = (lang, opt_messages) => {
@@ -74,6 +80,8 @@ import ru from 'timeago.js/lib/lang/ru';
 import sv from 'timeago.js/lib/lang/sv';
 import th from 'timeago.js/lib/lang/th';
 import tr from 'timeago.js/lib/lang/tr';
+import zh_CN from 'timeago.js/lib/lang/zh_CN';
+import zh_TW from 'timeago.js/lib/lang/zh_TW';
 // import ur from 'timeago.js/lib/lang/ur'; // Not currently supported by TimeAgo
 
 timeago.register('ar', ar);
@@ -93,6 +101,8 @@ timeago.register('ru', ru);
 timeago.register('sv', sv);
 timeago.register('th', th);
 timeago.register('tr', tr);
+timeago.register('zh-CN', zh_CN);
+timeago.register('zh-TW', zh_TW);
 
 /**
  * Helper function that allows plugins to register their

src/i18n/messages_zh_CN.json

@@ -0,0 +1,10 @@
+{
+  "Add a comment...": "添加评论...",
+  "Add a reply...": "添加回复...",
+  "Add tag...": "添加标签...",
+  "Cancel": "取消",
+  "Close": "关闭",
+  "Edit": "编辑",
+  "Delete": "删除",
+  "Ok": "确认"
+}

src/i18n/messages_zh_TW.json

@@ -0,0 +1,10 @@
+{
+  "Add a comment...": "添加評論...",
+  "Add a reply...": "添加回覆...",
+  "Add tag...": "添加標籤...",
+  "Cancel": "取消",
+  "Close": "關閉",
+  "Edit": "編輯",
+  "Delete": "刪除",
+  "Ok": "確認"
+}

src/utils/index.js

@@ -1,4 +1,4 @@
-import I18n from '../i18n';
+import I18n, { availableLocales } from '../i18n';
 
 /**
  * Helper to init the i18n class with a pre-defined or auto-detected locale.
@@ -8,11 +8,14 @@ export const setLocale = (locale, opt_messages) => {
     const l = locale === 'auto' ?
       window.navigator.userLanguage || window.navigator.language : locale;
 
-    try {
-      I18n.init(l.split('-')[0].toLowerCase(), opt_messages);
-    } catch (error) {
+    const fallback = l.split('-')[0].toLowerCase();
+    const foundLocale = [l, fallback].find(_l => availableLocales.includes(_l));
+
+    if (!foundLocale) {
       console.warn(`Unsupported locale '${l}'. Falling back to default en.`);
     }
+
+    I18n.init(foundLocale, opt_messages);
   } else {
     I18n.init(null, opt_messages);
   }