PPD manager speed improvements.

Only reload ppds that have been modified.

git-svn-id: https://oss.gonicus.de/repositories/gosa/trunk@7551 594d385d-05f5-0310-b6e9-bd551577e9d8

diff --git a/include/class_ppdManager.inc b/include/class_ppdManager.inc
index 7e416556d036bcf13f8aa23af19f69c783d3b019..a9dfd1a7f995e5bb292b7985864ebac8984039c3 100644 (file)
--- a/include/class_ppdManager.inc
+++ b/include/class_ppdManager.inc
@@ -4,6 +4,7 @@ class ppdManager
 {
        var $path= "";
        var $cachedList= array();
+       var $timestamps = array();
 
        function ppdManager($path)
        {
@@ -288,6 +289,16 @@ class ppdManager
                $model= "";
                $manufacturer= "";
 
+               
+               /* Only parse complete PPD file again, if it was changed */
+               $modified = filemtime($ppdFile);
+               if(isset($this->cachedList[$ppdFile]) && isset($this->timestamps[$ppdFile]) && $modified == $this->timestamps[$ppdFile]){
+                       return($this->cachedList[$ppdFile]);
+               }
+
+               /* Remember modified timestamp, to speed up next request */
+               $this->timestamps[$ppdFile] = filemtime($ppdFile);
+
                $fh= fopen ($ppdFile, 'r');
                while ((!feof($fh))&&($fh)) {
 
@@ -329,10 +340,11 @@ class ppdManager
                        $list= $this->findPPD($this->path);
 
                        /* Load descriptive informations to build final printer list */
-                       $this->cachedList= array();
+                       $new = array();
                        foreach ($list as $ppdFile){
-                               $this->cachedList[$ppdFile]= $this->loadDescription($ppdFile);
+                               $new[$ppdFile] = $this->loadDescription($ppdFile); 
                        }
+                       $this->cachedList= $new ;
 
                }