octal_to_utctime.py

#!/usr/bin/env python3

import argparse
import sys

parser = argparse.ArgumentParser(description="Process some integers.")
parser.add_argument("data")
args = parser.parse_args()

print(f"Processing {args.data}")

if len(args.data) % 3 != 0:
    print("Should be a multiple of 3.")
    sys.exit(1)
if len(args.data) != 39:
    print(
        f"Should be 39 characters long, excluding the escape slashes: {len(args.data)}"
    )
    sys.exit(1)

parts = [args.data[i : i + 3] for i in range(0, len(args.data), 3)]

data = [int(n, base=8).to_bytes(1, byteorder="little") for n in parts]

year = f"{int(data[0])}{int(data[1])}"
month = f"{int(data[2])}{int(data[3])}"
day = f"{int(data[4])}{int(data[5])}"
hour = f"{int(data[6])}{int(data[7])}"
minute = f"{int(data[8])}{int(data[9])}"
second = f"{int(data[10])}{int(data[11])}"
tz = f"{data[12].decode('utf-8')}"

print(f"20{year}/{month}/{day} {hour}:{minute}:{second} {tz}")