Function VerifyTownName

src/townname.cpp:103–126

* Verifies the town name is valid and unique. * @param r random bits * @param par town name parameters * @param town_names if a name is generated, check its uniqueness with the set * @return true iff name is valid and unique */

 * @return true iff name is valid and unique
 */
bool VerifyTownName(uint32_t r, const TownNameParams *par, TownNames *town_names)
{
	std::string name = GetTownName(par, r);

	/* Check size and width */
	if (Utf8StringLength(name) >= MAX_LENGTH_TOWN_NAME_CHARS) return false;

	if (town_names != nullptr) {
		if (town_names->find(name) != town_names->end()) return false;
		town_names->insert(std::move(name));
	} else {
		for (const Town *t : Town::Iterate()) {
			/* We can't just compare the numbers since
			 * several numbers may map to a single name. */
			if (t->name.empty()) {
				if (name == GetTownName(t)) return false;
			} else {
				if (name == t->name) return false;
			}
		}
	}

	return true;
}


/**