Elm gettext: Only translate if the app using elm is translatable.

It assumes gettext is initialized before the call to elm_init.

SVN revision: 63452

legacy/elementary/src/lib/elm_config.c

@@ -1658,12 +1658,33 @@ elm_mirrored_set(Eina_Bool mirrored)
    _elm_rescale();
 }
 
+static void
+_translation_init()
+{
+#ifdef ENABLE_NLS
+   const char *cur_dom = textdomain(NULL);
+   const char *trans_comment = gettext("");
+   const char *msg_locale = setlocale(LC_MESSAGES, NULL);
+
+   /* Same concept as what glib does:
+    * We shouldn't translate if there are no translations for the
+    * application in the current locale + domain. (Unless locale is
+    * en_/C where translating only parts of the interface make some
+    * sense).
+    */
+   _elm_config->translate = !(strcmp (cur_dom, "messages") &&
+         !*trans_comment && strncmp (msg_locale, "en_", 3) &&
+         strcmp (msg_locale, "C"));
+#endif
+}
+
 void
 _elm_config_init(void)
 {
    _desc_init();
    _profile_fetch_from_conf();
    _config_load();
+   _translation_init();
    _env_get();
    _config_apply();
    _elm_config_font_overlay_apply();

legacy/elementary/src/lib/elm_priv.h

@@ -28,7 +28,7 @@
 
 #ifdef ENABLE_NLS
 # include <libintl.h>
-# define E_(string) dgettext(PACKAGE, string)
+# define E_(string) _elm_dgettext(string)
 #else
 # define bindtextdomain(domain,dir)
 # define E_(string) (string)
@@ -148,6 +148,7 @@ struct _Elm_Config
 
    /* Not part of the EET file */
    Eina_Bool      is_mirrored : 1;
+   Eina_Bool      translate : 1;
 };
 
 struct _Elm_Module
@@ -247,6 +248,20 @@ extern int          _elm_log_dom;
 extern Eina_List   *_elm_win_list;
 extern int          _elm_win_deferred_free;
 
+/* Our gettext wrapper, used to disable translation of elm if the app
+ * is not translated. */
+static inline const char *
+_elm_dgettext(const char *string)
+{
+   if (EINA_UNLIKELY(_elm_config->translate == EINA_FALSE))
+     {
+        return string;
+     }
+
+   return dgettext(PACKAGE, string);
+}
+
+
 /* Used by the paste handler */
 void _elm_entry_entry_paste(Evas_Object *obj, const char *entry);