Function to_upper

library/strings.cpp:35–47

}

UString to_upper(const UStringView str)
{
	/* Only change the case on ascii range characters (codepoint <=0x7f)
	 * As we know the top bit is set for any bytes outside this range no matter the position in the
	 * utf8 stream, we can cheat a bit here */
	auto upper_string = UString(str);
	for (size_t i = 0; i < upper_string.length(); i++)
	{
		if ((upper_string[i] & 0b10000000) == 0)
			upper_string[i] = toupper(upper_string[i]);
	}
	return upper_string;
}

UString to_lower(const UStringView str)
{