Function parseString

part/DistinguishedNameParser.h:279–314

Parse a DN and return an array-ized one. This is not a validating parser and it does not support any old-stylish syntax; gpgme is expected to return only rfc2253 compatible strings. */

   parser and it does not support any old-stylish syntax; gpgme is
   expected to return only rfc2253 compatible strings. */
static Result parseString(std::string_view string)
{
    Result result;
    while (!string.empty()) {
        string = detail::removeLeadingSpaces(string);
        if (string.empty()) {
            break;
        }

        auto [partResult, dnPair] = detail::parse_dn_part(string);
        if (!partResult.has_value()) {
            return {};
        }

        string = partResult.value();
        if (dnPair.first.size() && dnPair.second.size()) {
            result.emplace_back(std::move(dnPair));
        }

        string = detail::removeLeadingSpaces(string);
        if (string.empty()) {
            break;
        }
        switch (string.front()) {
        case ',':
        case ';':
        case '+':
            string.remove_prefix(1);
            break;
        default:
            // some unexpected characters here
            return {};
        }
    }
    return result;
}

/// returns the first value of a given key (note. there can be multiple)
/// or nullopt if key is not available