int aws_cli_getopt_long()

in source/command_line_parser.c [72:138]

• 56 lines of code
• 13 McCabe index (conditional complexity)

int aws_cli_getopt_long(
    int argc,
    char *const argv[],
    const char *optstring,
    const struct aws_cli_option *longopts,
    int *longindex) {
    aws_cli_optarg = NULL;

    if (aws_cli_optind >= argc) {
        return -1;
    }

    char first_char = argv[aws_cli_optind][0];
    char second_char = argv[aws_cli_optind][1];
    char *option_start = NULL;
    const struct aws_cli_option *option = NULL;
    bool positional_arg_encountered = false;

    if (first_char == '-' && second_char != '-') {
        aws_cli_on_arg = true;
        positional_arg_encountered = false;
        option_start = &argv[aws_cli_optind][1];
        option = s_find_option_from_char(longopts, *option_start, longindex);
    } else if (first_char == '-' && second_char == '-') {
        aws_cli_on_arg = true;
        positional_arg_encountered = false;
        option_start = &argv[aws_cli_optind][2];
        option = s_find_option_from_c_str(longopts, option_start, longindex);
    } else {
        if (!aws_cli_on_arg) {
            aws_cli_positional_arg = argv[aws_cli_optind];
            positional_arg_encountered = true;
        } else {
            aws_cli_on_arg = false;
            aws_cli_positional_arg = NULL;
        }
    }

    aws_cli_optind++;
    if (option) {
        bool has_arg = false;
        aws_cli_on_arg = false;
        aws_cli_positional_arg = NULL;

        char *opt_value = memchr(optstring, option->val, strlen(optstring) + 1);
        if (!opt_value) {
            return '?';
        }

        if (opt_value[1] == ':') {
            has_arg = true;
        }

        if (has_arg) {
            if (aws_cli_optind >= argc) {
                return '?';
            }

            aws_cli_optarg = argv[aws_cli_optind++];
        }

        return option->val;
    }

    /* start of text to indicate we just have a text argument. */
    return positional_arg_encountered ? 0x02 : '?';
}