public function SetFileInfo( $filename, $uri_root = ''){
$this->path = pathinfo($filename, PATHINFO_DIRNAME);
$this->filename = Less_Environment::NormPath($filename);
$dirname = preg_replace('/[^\/\\\\]*$/','',$this->filename);
$currentFileInfo = array();
$currentFileInfo['currentDirectory'] = $dirname;
$currentFileInfo['filename'] = $filename;
$currentFileInfo['rootpath'] = $dirname;
$currentFileInfo['entryPath'] = $dirname;
if( empty($uri_root) ){
$currentFileInfo['uri_root'] = $uri_root;
}else{
$currentFileInfo['uri_root'] = rtrim($uri_root,'/').'/';
}
$this->env->currentFileInfo = $currentFileInfo;
self::$import_dirs = array_merge( array( $dirname => $currentFileInfo['uri_root'] ), self::$import_dirs );
}