Parse response from FTP LIST command (syntax variations)

Question

The FTP LIST command displays a listing of all the files and directories in the current working directory. The problem is, it returns several different formats depending on

Answer 1

^(?[\-ld])(?([\-r][\-w][\-xs]){3})\s+(?\d+)\s+(?\S+)\s+(?\S+)\s+(?\d+)\s+(?((?\w{3})\s+(?\d{1,2})\s+(?\d{1,2}):(?\d{2}))|((?\w{3})\s+(?\d{1,2})\s+(?\d{4})))\s+(?.+)$

On the site I'm on, the owner is displayed in Email address format. I changed owner and group to be non-space characters instead of word characters.

This is expanding on Yodiz' version of Chris Haas' version. Thanks so much!