X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/62342433f41f2eaef19c5e85f5ce960297ee8206..refs/pull/2227/head:/app/Http/Middleware/Localization.php

diff --git a/app/Http/Middleware/Localization.php b/app/Http/Middleware/Localization.php
index 466c1442b..d24e8a9b5 100644
--- a/app/Http/Middleware/Localization.php
+++ b/app/Http/Middleware/Localization.php
@@ -2,9 +2,49 @@
 
 use Carbon\Carbon;
 use Closure;
+use Illuminate\Http\Request;
 
 class Localization
 {
+
+    /**
+     * Array of right-to-left locales
+     * @var array
+     */
+    protected $rtlLocales = ['ar', 'he'];
+
+    /**
+     * Map of BookStack locale names to best-estimate system locale names.
+     * @var array
+     */
+    protected $localeMap = [
+        'ar' => 'ar',
+        'da' => 'da_DK',
+        'de' => 'de_DE',
+        'de_informal' => 'de_DE',
+        'en' => 'en_GB',
+        'es' => 'es_ES',
+        'es_AR' => 'es_AR',
+        'fr' => 'fr_FR',
+        'he' => 'he_IL',
+        'it' => 'it_IT',
+        'ja' => 'ja',
+        'ko' => 'ko_KR',
+        'nl' => 'nl_NL',
+        'pl' => 'pl_PL',
+        'pt' => 'pl_PT',
+        'pt_BR' => 'pt_BR',
+        'ru' => 'ru',
+        'sk' => 'sk_SK',
+        'sl' => 'sl_SI',
+        'sv' => 'sv_SE',
+        'uk' => 'uk_UA',
+        'vi' => 'vi_VN',
+        'zh_CN' => 'zh_CN',
+        'zh_TW' => 'zh_TW',
+        'tr' => 'tr_TR',
+    ];
+
     /**
      * Handle an incoming request.
      *
@@ -15,21 +55,66 @@ class Localization
     public function handle($request, Closure $next)
     {
         $defaultLang = config('app.locale');
-        if (user()->isDefault()) {
-            $locale = $defaultLang;
-            $availableLocales = config('app.locales');
-            foreach ($request->getLanguages() as $lang) {
-                if (!in_array($lang, $availableLocales)) {
-                    continue;
-                }
-                $locale = $lang;
-                break;
-            }
+        config()->set('app.default_locale', $defaultLang);
+
+        if (user()->isDefault() && config('app.auto_detect_locale')) {
+            $locale = $this->autoDetectLocale($request, $defaultLang);
         } else {
             $locale = setting()->getUser(user(), 'language', $defaultLang);
         }
+
+        config()->set('app.lang', str_replace('_', '-', $this->getLocaleIso($locale)));
+
+        // Set text direction
+        if (in_array($locale, $this->rtlLocales)) {
+            config()->set('app.rtl', true);
+        }
+
         app()->setLocale($locale);
         Carbon::setLocale($locale);
+        $this->setSystemDateLocale($locale);
         return $next($request);
     }
+
+    /**
+     * Autodetect the visitors locale by matching locales in their headers
+     * against the locales supported by BookStack.
+     * @param Request $request
+     * @param string $default
+     * @return string
+     */
+    protected function autoDetectLocale(Request $request, string $default)
+    {
+        $availableLocales = config('app.locales');
+        foreach ($request->getLanguages() as $lang) {
+            if (in_array($lang, $availableLocales)) {
+                return $lang;
+            }
+        }
+        return $default;
+    }
+
+    /**
+     * Get the ISO version of a BookStack language name
+     * @param  string $locale
+     * @return string
+     */
+    public function getLocaleIso(string $locale)
+    {
+        return $this->localeMap[$locale] ?? $locale;
+    }
+
+    /**
+     * Set the system date locale for localized date formatting.
+     * Will try both the standard locale name and the UTF8 variant.
+     * @param string $locale
+     */
+    protected function setSystemDateLocale(string $locale)
+    {
+        $systemLocale = $this->getLocaleIso($locale);
+        $set = setlocale(LC_TIME, $systemLocale);
+        if ($set === false) {
+            setlocale(LC_TIME, $systemLocale . '.utf8');
+        }
+    }
 }