# This file is a part of pyctr.
#
# Copyright (c) 2017-2023 Ian Burgwin
# This file is licensed under The MIT License (MIT).
# You can find the full license text in LICENSE in the root of this project.
import os
from math import ceil
from sys import platform
from typing import TYPE_CHECKING
__all__ = ['windows', 'macos', 'readle', 'readbe', 'roundup', 'config_dirs']
windows = platform == 'win32'
macos = platform == 'darwin'
[docs]
def readle(b: bytes) -> int:
"""Convert little-endian bytes to an int."""
return int.from_bytes(b, 'little')
[docs]
def readbe(b: bytes) -> int:
"""Convert big-endian bytes to an int."""
return int.from_bytes(b, 'big')
[docs]
def roundup(offset: int, alignment: int) -> int:
"""Round up a number to a provided alignment."""
return int(ceil(offset / alignment) * alignment)
_home = os.path.expanduser('~')
config_dirs: 'list[str]' = [os.path.join(_home, '.3ds'), os.path.join(_home, '3ds')]
if windows:
config_dirs.insert(0, os.path.join(os.environ.get('APPDATA'), '3ds'))
elif macos:
config_dirs.insert(0, os.path.join(_home, 'Library', 'Application Support', '3ds'))