public function compileFile($fname, $outFname = null) {         if (!is_readable($fname)) {             throw new Exception('load error: failed to find '.$fname);      }       $pi = pathinfo($fname);         $oldImport = $this->importDir;      $this->importDir = (array)$this->importDir;         $this->importDir[] = $pi['dirname'].'/';        $this->addParsedFile($fname);       $out = $this->compile(file_get_contents($fname), $fname);       $this->importDir
= $oldImport;       if ($outFname !== null) {           return file_put_contents($outFname, $out);      }       return $out;    }

protected function configurePath()   {
    $target_file =          $this->computeTargetPath();

    $this->source_path =    WP_CONTENT_DIR.preg_replace('#^'.content_url().'#U', '', $this->stylesheet->src);
    $this->source_uri =     $this->stylesheet->src;
    $this->target_path =    self::$upload_dir.$target_file;
    $this->target_uri =     self::$upload_uri.$target_file;

    $this->setSourceTimestamp(filemtime($this->source_path));   }