From 07f6711889bcb3ecd91ad545e86e60691d49a5e5 Mon Sep 17 00:00:00 2001
From: skodak <skodak>
Date: Sun, 8 Feb 2009 22:33:54 +0000
Subject: [PATCH] MDL-17573 added automatic downloading of parent languages

---
 admin/langimport.php |  6 ++++++
 lib/moodlelib.php    | 22 ++++++++++++++++++++--
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/admin/langimport.php b/admin/langimport.php
index 319b9fe0bc..0c10185a49 100755
--- a/admin/langimport.php
+++ b/admin/langimport.php
@@ -78,6 +78,12 @@
 
                             case COMPONENT_INSTALLED:
                                 $notice_ok[] = get_string('langpackinstalled','admin',$pack);
+                                if ($parentlang = get_parent_language($pack)) {
+                                    // install also parent pack if specified
+                                    if ($cd = new component_installer('http://download.moodle.org', 'lang16', $parentlang.'.zip', 'languages.md5', 'lang')) {
+                                        $cd->install();
+                                    }
+                                }
                             break;
 
                             case COMPONENT_UPTODATE:
diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index fd64f76e5a..0c51cdc1e8 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -5144,13 +5144,31 @@ function current_language() {
 
 /**
  * Returns parent language of current active language if defined
+ * @param string $lang null means current language
  * @return string
  */
-function get_parent_language() {
+function get_parent_language($lang=null) {
+    global $COURSE, $SESSION;
+
+    //let's hack around the current language
+    if (!empty($lang)) {
+        $old_course_lang  = empty($COURSE->lang) ? '' : $COURSE->lang;
+        $old_session_lang = empty($SESSION->lang) ? '' : $SESSION->lang;
+        $COURSE->lang  = '';
+        $SESSION->lang = $lang;
+    }
+
     $parentlang = get_string('parentlanguage');
     if ($parentlang === '[[parentlanguage]]' or strpos($parentlang, '<') !== false) {
-        return '';
+        $parentlang = '';
     }
+
+    //let's hack around the current language
+    if (!empty($lang)) {
+        $COURSE->lang  = $old_course_lang;
+        $SESSION->lang = $old_session_lang;
+    }
+
     return $parentlang;
 }
 
-- 
2.39.5