snippets.py

def checkAccess(target, flag):
    global user, groups
    if user == "root":
        return 1
    try:
        return {
            'owner': lambda u: 1 if target['owner'] == u else 0,
            'group': lambda u: 1 if targer['group'] == u else 0,
            'r': lambda u: 0,
            'w': lambda u: 1,
            'x': lambda u: 2}[flag](user)
    except KeyError:
        return 0

def translatePermission(arg):
    intperm_to_string = {
        "0": "---",
        "1": "--x",
        "2": "-w-",
        "3": "-wx",
        "4": "r--",
        "5": "r-x",
        "6": "rw-",
        "7": "rwx"}
    return ''.join(map(lambda u:intperm_to_string[u], arg[:3]))


#(command, take args)
commands = (
    (cd, True),
    (ls, False),
    (mkdir, True),
    (touch, True),
    (su, True),
    (useradd, True),
    (groupadd, True),
    (chmod, True),
    (chown, True),
    (chgrp, True),
    (lsgr, False),
    (lsus, False),
    (saveJSON, False),
    (exit, False), )
call_dict = {com.__name__: (lambda flag: (lambda arg:
                                            com(arg) if flag
                                            else com()))(flag)
                for com, flag in commands}
call_dict[com["com"](com["arg"])