ftpsync.py 文件源码

def get_mtime(self, name):
        """ Return modification time of the file in ftp server.

        If the file does not exist, return None.
        If the name refers to a directory, return 0.

        To get the local modification time, use
        ``get_mtime()-clock_offset``.
        """
        filename = self.abspath(name)
        try:
            resp = self.ftp.sendcmd('MDTM ' + filename.replace('\\', '/'))
        except error_perm, msg:
            s = str(msg)
            if s.startswith('550 I can only retrieve regular files'):
                # filename is directory
                return 0
            if s.startswith('550 Can\'t check for file existence'):
                # file with filename does not exist
                return None
            raise
        assert resp[:3]=='213', `resp, filename`
        modtime = int(time.mktime(time.strptime(resp[3:].strip(), '%Y%m%d%H%M%S')))
        return modtime