def format_permissions()

in atr/util.py [0:0]

• 25 lines of code
• 16 McCabe index (conditional complexity)

def format_permissions(mode: int) -> str:
    """Format Unix file permissions in ls -l style."""
    # File type
    if mode & 0o040000:
        # Directory
        perms = "d"
    elif mode & 0o0100000:
        # Regular file
        perms = "-"
    elif mode & 0o020000:
        # Character special
        perms = "c"
    elif mode & 0o060000:
        # Block special
        perms = "b"
    elif mode & 0o010000:
        # FIFO
        perms = "p"
    elif mode & 0o0140000:
        # Socket
        perms = "s"
    else:
        perms = "?"

    # Owner permissions
    perms += "r" if mode & 0o400 else "-"
    perms += "w" if mode & 0o200 else "-"
    perms += "x" if mode & 0o100 else "-"

    # Group permissions
    perms += "r" if mode & 0o040 else "-"
    perms += "w" if mode & 0o020 else "-"
    perms += "x" if mode & 0o010 else "-"

    # Others permissions
    perms += "r" if mode & 0o004 else "-"
    perms += "w" if mode & 0o002 else "-"
    perms += "x" if mode & 0o001 else "-"

    return perms