Function UTF8CodepointIndex

src/string.cpp:513–526

size_t UTF8CodepointIndex(const std::string& s8, size_t endPos) {
	size_t pos = 0;
	size_t index = 0;
	endPos = std::min(endPos, s8.size());
	while (pos < endPos) {
		size_t newPos = UTF8NextCodepoint(s8, pos);
		// Check if codepoint is invalid
		if (pos == newPos)
			return index;
		pos = newPos;
		index++;
	}
	return index;
}


size_t UTF8CodepointPos(const std::string& s8, size_t endIndex) {