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#!/usr/bin/env python3
# Copyright (C) 2020 The Nitrocli Developers
# SPDX-License-Identifier: GPL-3.0-or-later
from argparse import (
ArgumentParser,
)
from enum import (
Enum,
)
from os import (
environ,
)
from sys import (
argv,
exit,
)
class Action(Enum):
"""An action to perform."""
BINARY = "binary"
MODEL = "model"
NO_CACHE = "no-cache"
SERIAL_NUMBERS = "serial-numbers"
USB_PATH = "usb-path"
VERBOSITY = "verbosity"
@classmethod
def all(cls):
"""Return the list of all the enum members' values."""
return [x.value for x in cls.__members__.values()]
def main(args):
"""The extension's main function."""
parser = ArgumentParser()
parser.add_argument(choices=Action.all(), dest="what")
parser.add_argument("--nitrocli", action="store", default=None)
parser.add_argument("--model", action="store", default=None)
# We deliberately store the argument to this option as a string
# because we can differentiate between None and a valid value, in
# order to verify that it really is supplied.
parser.add_argument("--verbosity", action="store", default=None)
namespace = parser.parse_args(args[1:])
# We create a "reverse" mapping from string to variant (e.g., model ->
# MODEL).
options = {v.value: k for k, v in Action.__members__.items()}
try:
var = options[namespace.what]
print(environ[f"NITROCLI_{var}"])
except KeyError:
return 1
return 0
if __name__ == "__main__":
exit(main(argv))
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