How to obtain the size of a directory

Hi,

Is there a way to obtain the size of a directory on the FTP? I'd like to obtain it using batch.

Thanks,
J

See
https://winscp.net/forum/viewtopic.php?t=25361 or
https://stackoverflow.com/q/7891677/850848#46043096 (the second/WinSCP part of my answer)