1 files changed, 58 insertions, 0 deletions
diff --git a/lib/gitlab/i18n.rb b/lib/gitlab/i18n.rb
new file mode 100644
index 00000000000..a1b896c9511
--- /dev/null
+++ b/lib/gitlab/i18n.rb
@@ -0,0 +1,58 @@
+module Gitlab
+  module I18n
+    extend self
+
+    AVAILABLE_LANGUAGES = {
+      'en' => 'English',
+      'es' => 'Español',
+      'de' => 'Deutsch',
+      'fr' => 'Français',
+      'pt_BR' => 'Português(Brasil)',
+      'zh_CN' => '简体中文',
+      'zh_HK' => '繁體中文(香港)',
+      'zh_TW' => '繁體中文(臺灣)',
+      'bg' => 'български',
+      'ru' => 'Русский',
+      'eo' => 'Esperanto',
+      'it' => 'Italiano',
+      'uk' => 'Українська',
+      'ja' => '日本語'
+    }.freeze
+
+    def available_locales
+      AVAILABLE_LANGUAGES.keys
+    end
+
+    def locale
+      FastGettext.locale
+    end
+
+    def locale=(locale_string)
+      requested_locale = locale_string || ::I18n.default_locale
+      new_locale = FastGettext.set_locale(requested_locale)
+      ::I18n.locale = new_locale
+    end
+
+    def use_default_locale
+      FastGettext.set_locale(::I18n.default_locale)
+      ::I18n.locale = ::I18n.default_locale
+    end
+
+    def with_locale(locale_string)
+      original_locale = locale
+
+      self.locale = locale_string
+      yield
+    ensure
+      self.locale = original_locale
+    end
+
+    def with_user_locale(user, &block)
+      with_locale(user&.preferred_language, &block)
+    end
+
+    def with_default_locale(&block)
+      with_locale(::I18n.default_locale, &block)
+    end
+  end
+end