tools.py 文件源码

def humanUnixAttributes(mode):
    """
    Convert a Unix file attributes (or "file mode") to an unicode string.

    Original source code:
    http://cvs.savannah.gnu.org/viewcvs/coreutils/lib/filemode.c?root=coreutils

    >>> humanUnixAttributes(0o644)
    '-rw-r--r-- (644)'
    >>> humanUnixAttributes(0o2755)
    '-rwxr-sr-x (2755)'
    """

    chars = [_ftypelet(mode), 'r', 'w', 'x', 'r', 'w', 'x', 'r', 'w', 'x']
    for i in range(1, 10):
        if not mode & 1 << 9 - i:
            chars[i] = '-'
    if mode & stat.S_ISUID:
        if chars[3] != 'x':
            chars[3] = 'S'
        else:
            chars[3] = 's'
    if mode & stat.S_ISGID:
        if chars[6] != 'x':
            chars[6] = 'S'
        else:
            chars[6] = 's'
    if mode & stat.S_ISVTX:
        if chars[9] != 'x':
            chars[9] = 'T'
        else:
            chars[9] = 't'
    return "%s (%o)" % (''.join(chars), mode)