Function HexStringToBytesLength

src/utils/xstring.cpp:261–266

returns -1 if this is not a hex string

///returns -1 if this is not a hex string
int HexStringToBytesLength(const std::string& str)
{
	if(str.size()>2 && str[0] == '0' && toupper(str[1]) == 'X')
		return str.size()/2-1;
	else return -1;
}

int Base64StringToBytesLength(const std::string& str)
{