dummycharaviewer.py

#!/usr/bin/env python
""" A script for reading .dat files in Dummymeuporg. """

import sys
import struct


source = sys.argv[-1]
expected_magic_word = 0xdeadface


def check_magic_word():
    magic_word = struct.unpack("<L", dat_file.read(4))[0]

    if magic_word != expected_magic_word:
        print("Invalid Magic Word.")


def read_character_name():
    name_length = struct.unpack("<L", dat_file.read(4))[0]
    name = (struct.unpack(f"<{name_length}s",
            dat_file.read(name_length))[0]).decode('UTF-8')

    print(f"Character’s Name: {name}")


def read_filename():
    filename_length = struct.unpack("<L", dat_file.read(4))[0]
    filename = (struct.unpack(f"<{filename_length}s",
                dat_file.read(filename_length))[0]).decode('UTF-8')

    print(f"Filename: {filename}")


def read_coordinates():
    coordinates = struct.unpack("<2H", dat_file.read(4))
    x, y = coordinates[0], coordinates[1]

    map_name_length = struct.unpack("<L", dat_file.read(4))[0]
    map_name = (struct.unpack(f"<{map_name_length}s",
                dat_file.read(map_name_length))[0]).decode('UTF-8')

    print(f"Coordinates: {map_name} ({x},{y})")


with open(source, "rb") as dat_file:
    check_magic_word()
    read_character_name()
    read_filename()
    read_coordinates()