QUT.Gplex.Parser.CharacterUtilities.GetHexadecimalChar C# (CSharp) Method

        private static int GetHexadecimalChar(string str)
        {
            if (str.Length != 2)
                return -1;
            if (IsHexDigit(str[0]) && IsHexDigit(str[1]))
                return HexChar(str[0], str[1]);
            else
                return -1;
        }