/**
* Return the simple boolean attributes for the file or directory denoted
* by the given pathname, or zero if it does not exist or some
* other I/O error occurs.
*
* @param File $f
* @return int
*/
public function getBooleanAttributes(File $f)
{
if (!$f->exists()) {
return 0;
}
$mode = substr(sprintf('%o', $f->getPerms()), -4);
$mode = intval($mode, 8);
return $mode;
}