keyctl

#!/usr/bin/env python3
import argparse
import os
import sys

PATH = "/sys/devices/platform/tuxedo_keyboard"

def checkHexArgErr(ret, hex):
    if ret == False:
        raise argparse.ArgumentTypeError('invalid hex value: {}'.format(hex))
    else:
        return ret

def checkHexStripped(hex, num):
    if len(hex) != num:
        return False
    try:
        int(hex, 16)
        return "0x" + hex
    except:
        return False

def checkHex(hex, num):
    if len(hex) < num:
        raise argparse.ArgumentTypeError('invalid hex value: {}'.format(hex))
    if hex[0] == '0' and (hex[1] == 'x' or hex[1] == 'X'):
        return checkHexArgErr(checkHexStripped(hex[2:], num), hex)
    return checkHexArgErr(checkHexStripped(hex, num), hex)

def checkHex2(hex):
    return checkHex(hex, 2)

def checkHex6(hex):
    return checkHex(hex, 6)

def parseArgs():
    parser = argparse.ArgumentParser(description="Control color and brightness or Tuxedo Keyboards.")
    parser.add_argument('-c',
        metavar="color",
        type=checkHex6,
        help="color of the keyboard (0xFFFFFF)")
    parser.add_argument('-b',
        metavar="brightness",
        type=checkHex2,
        help="brightness of the keyboard (0xFF)")
    parser.add_argument('-g',
        action="store_true",
        help="get current value")
    args = vars(parser.parse_args())
    if args["c"] == None and args["b"] == None and args["g"] == False:
        parser.print_help()
        sys.exit()
    return args

if __name__ == "__main__":
    args = parseArgs()
    if args["c"] is not None:
        os.system('echo "{}" > {}/color_left'.format(args["c"], PATH))
    if args["b"] is not None:
        os.system('echo "{}" > {}/brightness'.format(args["b"], PATH))
    if args["g"] is not False:
        file = open("{}/brightness".format(PATH), "r")
        print("Brightness:\t0x{:02x}".format(int(file.read().strip())))
        file.close()
        file = open("{}/brightness".format(PATH), "r")
        print("Color:\t\t0x{:06x}".format(int(file.read().strip())))
        file.close()