Method ParseParam

src/game_message.cpp:188–285

}

Game_Message::ParseParamResult Game_Message::ParseParam(
		char upper,
		char lower,
		const char* iter,
		const char* end,
		uint32_t escape_char,
		bool skip_prefix,
		int max_recursion)
{
	if (!skip_prefix) {
		const auto begin = iter;
		if (iter == end) {
			return { begin, 0 };
		}
		auto ret = Utils::UTF8Next(iter, end);
		// Invalid commands
		if (ret.ch != escape_char) {
			return { begin, 0 };
		}
		iter = ret.next;
		if (iter == end || (*iter != upper && *iter != lower)) {
			return { begin, 0 };
		}
		++iter;
	}

	// If no bracket, RPG_RT will return 0.
	if (iter == end || *iter != '[') {
		return { iter, 0 };
	}

	int value = 0;
	++iter;
	bool stop_parsing = false;
	bool got_valid_number = false;

	while (iter != end && *iter != ']') {
		if (stop_parsing) {
			++iter;
			continue;
		}

		// Fast inline isdigit()
		if (*iter >= '0' && *iter <= '9') {
			value *= 10;
			value += (*iter - '0');
			++iter;
			got_valid_number = true;
			continue;
		}

		if (max_recursion > 0) {
			auto ret = Utils::UTF8Next(iter, end);
			auto ch = ret.ch;
			iter = ret.next;

			// Recursive variable case.
			if (ch == escape_char) {