fs/_ftp_parse.py fails when parsing directory listing on NT format if folder or filename contains AM or PM

[xoriath]

The regex pattern used to parse the directory listing for NT servers uses a greedy (default) pattern when parsing the modified date column. This causes the (<modified>) capture group to capture until the last AM or PM, which could be in the file name.

Example file listing that fails:

01-29-20  04:11AM       <DIR>          Clock at AM or PM

This fails with the following trace

  File ".venv\lib\site-packages\fs\ftpfs.py", line 746, in scandir
    if not self.supports_mlst and not self.getinfo(path).is_dir:
  File ".venv\lib\site-packages\fs\ftpfs.py", line 614, in getinfo
    directory = self._read_dir(dir_name)
  File ".venv\lib\site-packages\fs\ftpfs.py", line 495, in _read_dir
    _list = [Info(raw_info) for raw_info in ftp_parse.parse(lines)]
  File ".venv\lib\site-packages\fs\_ftp_parse.py", line 70, in parse
    raw_info = parse_line(line)
  File ".venv\lib\site-packages\fs\_ftp_parse.py", line 81, in parse_line
    return decode_callable(line, match)
  File ".venv\lib\site-packages\fs\_ftp_parse.py", line 163, in decode_windowsnt
    raw_info["details"]["size"] = int(match.group("size"))
ValueError: invalid literal for int() with base 10: ''