def get_bazelisk_directory()

in bazelisk.py [0:0]

• 25 lines of code
• 9 McCabe index (conditional complexity)

def get_bazelisk_directory():
    bazelisk_home = os.environ.get("BAZELISK_HOME")
    if bazelisk_home is not None:
        return bazelisk_home

    operating_system = get_operating_system()

    base_dir = None

    if operating_system == "windows":
        base_dir = os.environ.get("LocalAppData")
        if base_dir is None:
            raise Exception("%LocalAppData% is not defined")
    elif operating_system == "darwin":
        base_dir = os.environ.get("HOME")
        if base_dir is None:
            raise Exception("$HOME is not defined")
        base_dir = os.path.join(base_dir, "Library/Caches")
    elif operating_system == "linux":
        base_dir = os.environ.get("XDG_CACHE_HOME")
        if base_dir is None:
            base_dir = os.environ.get("HOME")
            if base_dir is None:
                raise Exception("neither $XDG_CACHE_HOME nor $HOME are defined")
            base_dir = os.path.join(base_dir, ".cache")
    else:
        raise Exception("Unsupported operating system '{}'".format(operating_system))

    return os.path.join(base_dir, "bazelisk")