Wonderflux performance patch

Wonderfluxperformance.patch

--- wf-display-functions.php.orig       2012-07-25 21:43:07.050252166 +0100
+++ wf-display-functions.php    2012-07-25 21:47:03.102242294 +0100
@@ -8,12 +8,26 @@
 class wflux_display_code extends wflux_data {
 
        protected $xml_namespaces;
+       private $cache_theme_name = null;
 
        function __construct() {
                parent::__construct();
                $this->xml_namespaces = array(); // Holds all XML namespaces to build into head
        }
 
+       private function get_cache_theme_name() {
+
+               // Backpat - depreciated function get_current_theme() in WordPress 3.4
+               //TODO: Check version_compare() - is < evaluation on constant quicker/easier?
+               if ( ! $this->cache_theme_name )
+                       $this->cache_theme_name = preg_replace('/[^a-zA-Z0-9]/','_', ( WF_WORDPRESS_VERSION < 3.4 ) ? get_current_theme() : wp_get_theme()->Name );
+
+               return $this->cache_theme_name;
+
+       }
+
+
+
        /**
        * Builds the start of the head with doc type declaration
        *
@@ -1852,7 +1866,8 @@
 
                // Backpat - depreciated function get_current_theme() in WordPress 3.4
                //TODO: Check version_compare() - is < evaluation on constant quicker/easier?
-               $theme_name = preg_replace('/[^a-zA-Z0-9]/','_', ( WF_WORDPRESS_VERSION < 3.4 ) ? get_current_theme() : wp_get_theme()->Name );
+               $theme_name = $this->get_cache_theme_name();
+               
                // TODO: Transient key reported upto 32 characters max - have tested upto 45, 46 was stormy waters!
                // Best to play on safe side until further teting done (32)
                $transient_key = mb_substr( empty($transient_key) ? $theme_name.'_c_'.$part : $transient_key , 0, 32);