feat(i18n): Add i18n Support

Add i18n Support, However the view is Working in progress.

BREAKING CHANGE: dbstructure of `Users` Change

apps/config/http_base.php

@@ -191,7 +191,16 @@
 
         'user' => [
             'class' => Rid\User\User::class,
-        ]
+        ],
+
+        'i18n' => [
+            'class' => Rid\I18n\I18n::class,
+            'fileNamespace' => 'apps\lang',
+            'fallbackLang' => 'en',
+            'mergeFallback' => true,
+            'forcedLang' => null,
+            'allowedLangSet' => ['en', 'zh-CN']
+        ],
     ],
 
     // 类库配置

apps/lang/en.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Rhilip
+ * Date: 2019/3/13
+ * Time: 20:45
+ */
+
+namespace apps\lang;
+
+
+class en
+{
+    const greeting = 'Hello World';
+}

apps/lang/zh_CN.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Rhilip
+ * Date: 2019/3/13
+ * Time: 21:06
+ */
+
+namespace apps\lang;
+
+
+class zh_CN
+{
+
+}

apps/views/index.php

@@ -9,12 +9,14 @@
  */
 ?>
 
-<?=  $this->layout('layout/base') ?>
+<?= $this->layout('layout/base') ?>
+
+<?php $this->start('title')?>Index<?php $this->end();?>
 
 <?php $this->start('container') ?>
     <!-- Main component for a primary marketing message or call to action -->
     <div class="jumbotron">
-        <h1>Navbar example</h1>
-        <p><strong>I'm sorry for broken page since I'm rebuilding.</strong></p>
+        <h1>Navbar <?= __('greeting',null,'zh-CN'); ?></h1>
+        <p><strong>I'm sorry for broken page since I'm rebuilding. <?= __('greet') ?></strong></p>
     </div>
 <?php $this->stop() ?>

framework/Base/Application.php

@@ -17,6 +17,7 @@
  * @property \Rid\Config\DynamicConfig $config
  * @property \Rid\Pool\ConnectionPool $connectionPool
  * @property \Rid\User\User $user
+ * @property \Rid\I18n\I18n $i18n
  */
 class Application extends BaseObject
 {
@@ -36,7 +37,7 @@ class Application extends BaseObject
     // 初始化事件
     public function onInitialize()
     {
-        parent::onInitialize(); // TODO: Change the autogenerated stub
+        parent::onInitialize();
         // 快捷引用
         \Rid::setApp($this);
         // 错误注册

framework/I18n/I18n.php

@@ -0,0 +1,183 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Rhilip
+ * Date: 2019/3/13
+ * Time: 19:55
+ */
+
+namespace Rid\I18n;
+
+use Rid\Base\Component;
+
+class I18n extends Component
+{
+
+    /**
+     * Language file path
+     * This is the path for the language files.
+     *
+     * @var string
+     */
+    public $fileNamespace = '\apps\lang';
+
+    /**
+     * Allowed language
+     * This is the set of language which is used to limit user languages. No-exist language will not accept.
+     *
+     * @var array
+     */
+    public $allowedLangSet = ['en', 'zh-CN'];
+
+    /**
+     * Fallback language
+     * This is the language which is used when there is no language file for all other user languages. It has the lowest priority.
+     * Remember to create a language file for the fallback!!
+     *
+     * @var string
+     */
+    public $fallbackLang = 'en';
+
+    /**
+     * Merge in fallback language
+     * Whether to merge current language's strings with the strings of the fallback language ($fallbackLang).
+     *
+     * @var bool
+     */
+    public $mergeFallback = false;
+
+    /**
+     * Forced language
+     * If you want to force a specific language define it here.
+     *
+     * @var string
+     */
+    public $forcedLang = null;
+
+    /*
+     * The following properties are only available after calling init().
+     */
+    protected $lastLang = null;
+
+    public function onRequestBefore()
+    {
+        $lastLang = null;
+    }
+
+    /**
+     * getUserLangs()
+     * Returns the user languages
+     * Normally it returns an array like this:
+     * 1. Forced language
+     * 2. Language in $_GET['lang']
+     * 3. Language in $_SESSION['lang']
+     * 4. HTTP_ACCEPT_LANGUAGE
+     * 5. Fallback language
+     * Note: duplicate values are deleted.
+     *
+     * @param null $reqLang
+     * @return array with the user languages sorted by priority.
+     */
+    public function getUserLangs($reqLang = null) {
+        $userLangs = array();
+
+        // Quick Return the last used language list
+        if ($this->lastLang != null && $reqLang == null) {
+            return $this->lastLang;
+        }
+
+        // Highest priority: forced language
+        if ($this->forcedLang != NULL) $userLangs[] = $this->forcedLang;
+
+        // 1st highest priority: required language
+        if ($reqLang != null) {
+            $userLangs[] = $reqLang;
+        } else {
+            // 2nd highest priority: GET parameter 'lang'
+            if (!is_null(app()->request->get('lang'))) $userLangs[] = app()->request->get('lang');
+
+            // 3rd highest priority: SESSION parameter 'lang'
+            if (!is_null(app()->user->getLang())) $userLangs[] = app()->user->getLang();
+
+            // 4th highest priority: HTTP_ACCEPT_LANGUAGE
+            if (!is_null(app()->request->header('accept_language'))) {
+                /**
+                 * We get headers like this string 'en-US,en;q=0.8,uk;q=0.6,ru;q=0.4' (length=32)
+                 * And then sort to an array like this
+                 *
+                 * array(size=4)
+                 *    'en-US'    => float 1
+                 *    'en'       => float 0.8
+                 *    'uk'       => float 0.6
+                 *    'ru'       => float 0.4
+                 *
+                 */
+                $prefLocales = array_reduce(
+                    explode(',', app()->request->header('accept_language')),
+                    function ($res, $el) {
+                        list($l, $q) = array_merge(explode(';q=', $el), [1]);
+                        $res[$l] = (float)$q;
+                        return $res;
+                    }, []);
+                arsort($prefLocales);
+
+                foreach ($prefLocales as $part => $q) {
+                    $userLangs[] = $part;
+                }
+            }
+        }
+
+        // Lowest priority: fallback
+        $userLangs[] = $this->fallbackLang;
+
+        $userLangs = array_unique($userLangs);  // remove duplicate elements
+        $this->lastLang = $userLangs;  // Store it for last use.
+        return $userLangs;
+    }
+
+    protected function getConfigClassName($langcode) {
+        $langcode = str_replace('-','_',$langcode);
+        return $this->fileNamespace . '\\' . $langcode;
+    }
+
+    private function getLangList($lang = null) {
+        $userLangs = $this->getUserLangs($lang);
+
+        // remove illegal userLangs
+        $userLangs2 = array();
+        foreach ($userLangs as $key => $value) {
+            // only allow a-z, A-Z and 0-9 and _ and -
+            if (preg_match('/^[a-zA-Z0-9_-]*$/', $value) === 1 && in_array($value, $this->allowedLangSet)) {
+                if (class_exists($this->getConfigClassName($value))) {
+                    $userLangs2[] = $this->getConfigClassName($value);  // change it to class name
+                } elseif (
+                    // Fail back if main language exist
+                    $value !== substr($value, 0, 2)
+                    && class_exists($this->getConfigClassName(substr($value, 0, 2)))) {
+                    $userLangs2[] = $this->getConfigClassName(substr($value, 0, 2));
+                }
+            }
+        }
+
+        // remove duplicate elements
+        return array_unique($userLangs2);
+    }
+
+
+    public function trans($string, $args = null, $lang = null)
+    {
+        $langs = $this->getLangList($lang);
+
+        $return = '';
+        foreach ($langs as $item) {
+            try {
+                $return = constant($item . "::" . $string);
+                break;
+            } catch (\Exception $e) {
+                app()->log->warning('A no-exist translation hit.',['lang_class' => $item,'string' => $string]);
+            }
+        }
+
+        return $args ? vsprintf($return, $args) : $return;
+    }
+}

framework/User/UserTrait.php

@@ -25,6 +25,8 @@ trait UserTrait
 
     private $avatar;
 
+    private $lang;
+
     private $create_at;
     private $last_login_at;
     private $last_access_at;
@@ -287,4 +289,12 @@ public function getActiveLeech()
         }
         return $active_leech;
     }
+
+    /**
+     * @return mixed
+     */
+    public function getLang()
+    {
+        return $this->lang;
+    }
 }

framework/functions.php

@@ -27,6 +27,13 @@ function env($name = null, $default = '')
     }
 }
 
+if (!function_exists('__')) {
+    function __($string, $avg = null, $lang = null)
+    {
+        return app()->i18n->trans($string, $avg, $lang);
+    }
+}
+
 if (!function_exists('tgo')) {
 
     /** 创建一个带异常捕获的协程

migration/ridpt.sql

@@ -3,7 +3,7 @@
 -- https://www.phpmyadmin.net/
 --
 -- Host: 127.0.0.1
--- Generation Time: Mar 08, 2019 at 08:30 AM
+-- Generation Time: Mar 13, 2019 at 03:26 PM
 -- Server version: 8.0.14
 -- PHP Version: 7.3.1
 
@@ -598,6 +598,7 @@ CREATE TABLE IF NOT EXISTS `users` (
   `bonus_seeding` decimal(20,2) UNSIGNED NOT NULL DEFAULT '0.00',
   `bonus_invite` decimal(20,2) UNSIGNED NOT NULL DEFAULT '0.00',
   `bonus_other` decimal(20,2) UNSIGNED NOT NULL DEFAULT '0.00',
+  `lang` varchar(10) NOT NULL DEFAULT 'en',
   PRIMARY KEY (`id`),
   UNIQUE KEY `username` (`username`),
   UNIQUE KEY `email` (`email`),