get_max_upload_size function is added

Signed-off-by: Ruslan Kabalin <ruslan.kabalin@luns.net.uk>

htdocs/artefact/file/form/elements/filebrowser.php

@@ -108,11 +108,7 @@ function pieform_element_filebrowser(Pieform $form, $element) {
         }
     }
     if ($config['upload']) {
-        $maxuploadsize = min(get_real_size(ini_get('post_max_size')), get_real_size(ini_get('upload_max_filesize')));
-        if (!$institution && !$group) {
-            $userquotaremaining = $USER->get('quota') - $USER->get('quotaused');
-            $maxuploadsize = min($maxuploadsize, $userquotaremaining);
-        }
+        $maxuploadsize = get_max_upload_size(!$institution && !$group);
         $maxuploadsize = display_size($maxuploadsize);
         $smarty->assign('maxuploadsize', $maxuploadsize);
     }

htdocs/lib/mahara.php

@@ -2101,6 +2101,22 @@ function get_real_size($size=0) {
     throw new SystemException('get_real_size called without valid size');
 }
 
+/**
+ * Determines maximum upload size based on quota and PHP settings.
+ *
+ * @param  bool $is_user whether upload size should be evaluated for user (quota is considered)
+ * @return integer
+ */
+function get_max_upload_size($is_user) {
+    global $USER;
+    $maxuploadsize = min(get_real_size(ini_get('post_max_size')), get_real_size(ini_get('upload_max_filesize')));
+    if ($is_user) {
+        $userquotaremaining = $USER->get('quota') - $USER->get('quotaused');
+        $maxuploadsize = min($maxuploadsize, $userquotaremaining);
+    }
+    return $maxuploadsize;
+}
+
 /**
  * Converts bytes into display form
  *