Function LookupManyOfMany

src/settings.cpp:221–240

* Find the set-integer value MANYofMANY type in a string * @param many full domain of values the MANYofMANY setting can have * @param str the current string value of the setting, each individual * of separated by a whitespace, tab or | character * @return the 'fully' set integer, or std::nullopt if a set is not found */

 * @return the 'fully' set integer, or std::nullopt if a set is not found
 */
static std::optional<uint32_t> LookupManyOfMany(std::span<const std::string_view> many, std::string_view str)
{
	static const std::string_view separators{" \t|"};

	uint32_t res = 0;
	StringConsumer consumer{str};
	while (consumer.AnyBytesLeft()) {
		/* skip "whitespace" */
		consumer.SkipUntilCharNotIn(separators);

		std::string_view value = consumer.ReadUntilCharIn(separators);
		if (value.empty()) break;

		auto r = OneOfManySettingDesc::ParseSingleValue(value, many);
		if (!r.has_value()) return r;

		SetBit(res, *r); // value found, set it
	}
	return res;
}

/**
 * Parse a string into a vector of uint32s.