def _unpack_complex_cli_arg()

in awscli/argprocess.py [0:0]

• 21 lines of code
• 11 McCabe index (conditional complexity)

def _unpack_complex_cli_arg(argument_model, value, cli_name):
    type_name = argument_model.type_name
    if type_name == 'structure' or type_name == 'map':
        if value.lstrip()[0] == '{':
            return _unpack_json_cli_arg(argument_model, value, cli_name)
        raise ParamError(cli_name, f"Invalid JSON:\n{value}")
    elif type_name == 'list':
        if isinstance(value, str):
            if value.lstrip()[0] == '[':
                return _unpack_json_cli_arg(argument_model, value, cli_name)
        elif isinstance(value, list) and len(value) == 1:
            single_value = value[0].strip()
            if single_value and single_value[0] == '[':
                return _unpack_json_cli_arg(argument_model, value[0], cli_name)
        try:
            # There's a couple of cases remaining here.
            # 1. It's possible that this is just a list of strings, i.e
            # --security-group-ids sg-1 sg-2 sg-3 => ['sg-1', 'sg-2', 'sg-3']
            # 2. It's possible this is a list of json objects:
            # --filters '{"Name": ..}' '{"Name": ...}'
            member_shape_model = argument_model.member
            return [
                _unpack_cli_arg(member_shape_model, v, cli_name) for v in value
            ]
        except (ValueError, TypeError):
            # The list params don't have a name/cli_name attached to them
            # so they will have bad error messages.  We're going to
            # attach the parent parameter to this error message to provide
            # a more helpful error message.
            raise ParamError(cli_name, value[0])