Added useragent language support.

diff --git a/start.php b/start.php
index 2b9c4e543f4f60b3c6ac24d33a305a48707bb01c..a481c887783ae00c9f04dfedefe5bcc7150551d5 100644 (file)
--- a/start.php
+++ b/start.php
@@ -4,6 +4,27 @@
  *
  */
 
+function languages_get_useragent_language() {
+       global $CONFIG;
+       if (isset($_SERVER["HTTP_ACCEPT_LANGUAGE"])) {
+
+               register_translations($CONFIG->path . "languages/", true);
+
+               $available_languages = array_keys($CONFIG->translations);
+               $accepted_languages = explode(',', $_SERVER["HTTP_ACCEPT_LANGUAGE"]);
+
+               foreach ($accepted_languages as $i => $accepted_language) {
+                       $accepted_languages[$i] = trim(array_shift(preg_split("/[-;]/", $accepted_language)));
+               }
+
+               $langs = array_intersect($accepted_languages, $available_languages);
+               if (count($langs) > 0) {
+                       return array_shift($langs);
+               }
+               return false;
+       }
+}
+
 register_translations(elgg_get_plugins_path() . "languages/languages/es", true);
 register_translations(elgg_get_plugins_path() . "languages/languages/nl", true);
 register_translations(elgg_get_plugins_path() . "languages/languages/de", true);
@@ -18,3 +39,10 @@ register_translations(elgg_get_plugins_path() . "languages/languages/ja", true);
 register_translations(elgg_get_plugins_path() . "languages/languages/sr", true);
 register_translations(elgg_get_plugins_path() . "languages/languages/th", true);
 register_translations(elgg_get_plugins_path() . "languages/languages/zh", true);
+
+if (!elgg_is_logged_in()) {
+       global $CONFIG;
+       if ($useragent_language = languages_get_useragent_language()) {
+               $CONFIG->language = $useragent_language;
+       }
+}
\ No newline at end of file