adb_commands.py 文件源码

def __determine_device_id(ctx_params):
    # All attached devices
    devices = Adb.get_devices_as_list()

    if not devices:
        raise click.ClickException("No devices attached")

    device_param = ctx_params["device"]
    index_param = ctx_params["index"]
    if device_param is not None and index_param is not None:
        # Only one of the two options can be passed
        raise click.BadOptionUsage(
            "Only one of the options '--device' or '--index' is allowed")

    elif device_param is not None:
        # Only return the device id when the device is attached
        if __is_device_id_attached(devices, device_param):
            return device_param
        else:
            raise click.ClickException(
                "The device '%s' isn't attached" % device_param)

    elif index_param is not None:
        # Get the device id from the index
        # Only return the device id when the device is attached
        try:
            return devices[index_param][0]
        except IndexError:
            raise click.ClickException(
                "No device with the index '%s' available" % index_param)

    # When no option is provided, then read the local and global config
    device_id = Config.read_value(Config.SECTION_DEVICE,
                                  Config.KEY_DEFAULT)

    if device_id and __is_device_id_attached(devices, device_id):
        # Only return the device id when the device is attached
        return device_id

    if len(devices) == 1:
        # Last resort: Return the only attached device
        return devices[0][0]
    else:
        raise click.ClickException("Can't determine the best matching device")