Function UTF8NextCodepoint

src/string.cpp:473–483

size_t UTF8NextCodepoint(const std::string& s8, size_t pos) {
	// Check out of bounds
	if (pos >= s8.size())
		return s8.size();
	size_t size = UTF8CodepointSize(s8[pos]);
	// Check for continuation byte 0b10xxxxxx
	// if ((s8[1] & 0xc0) != 0x80) return 0;
	// if ((s8[2] & 0xc0) != 0x80) return 0;
	// if ((s8[3] & 0xc0) != 0x80) return 0;
	return std::min(pos + size, s8.size());
}


/** Finds the byte index of the front of a codepoint by reversing until a non-continuation byte is found. */