namespace ClassFile
{
    class BaseUtil
    {
        /// <summary>
        /// 获取LRC
        /// </summary>
        /// <param name="SQL"></param>
        public static string getLRC(string SENDMESSAGE)
        {
            string message = SENDMESSAGE.Trim();
            if (message.Length % 2 != 0)
            {
                message = message + "0";
            }

            int LRC = 0x0;
            for (int i = 0; i < message.Length; i = i + 2)
            {
                int inside = int.Parse(message.Substring(i, 1).ToString() + message.Substring(i + 1, 1).ToString(), System.Globalization.NumberStyles.HexNumber);
                LRC += inside;
            }
            string _LRC = string.Format("{0:X2}", LRC);
            string LRCre = "";
            for (int i = 0; i < _LRC.Length; i++)
            {
                int index;
                index = 0xF - int.Parse(_LRC.Substring(i, 1).ToString(), System.Globalization.NumberStyles.HexNumber);
                LRCre += string.Format("{0:X}", index);
            }

            LRCre = string.Format("{0:X}", int.Parse(LRCre, System.Globalization.NumberStyles.HexNumber) + 1);

            return LRCre;
        }

        public static string ASCIIToString(string ASCII)
        {
            string ReturnStr = "";
            ASCII = ASCII.Replace(" ", "").Replace("3A", "").Replace("0D", "").Replace("0A", "");
            System.Console.WriteLine(ASCII);
            for (int i = 0; i < ASCII.Length; i = i + 2)
            {
                if (i + 2 < ASCII.Length)
                {
                    switch (ASCII.Substring(i, 2))
                    {
                        case "30":
                            ReturnStr += "0";
                            break;
                        case "31":
                            ReturnStr += "1";
                            break;
                        case "32":
                            ReturnStr += "2";
                            break;
                        case "33":
                            ReturnStr += "3";
                            break;
                        case "34":
                            ReturnStr += "4";
                            break;
                        case "35":
                            ReturnStr += "5";
                            break;
                        case "36":
                            ReturnStr += "6";
                            break;
                        case "37":
                            ReturnStr += "7";
                            break;
                        case "38":
                            ReturnStr += "8";
                            break;
                        case "39":
                            ReturnStr += "9";
                            break;
                        case "41":
                            ReturnStr += "A";
                            break;
                        case "42":
                            ReturnStr += "B";
                            break;
                        case "43":
                            ReturnStr += "C";
                            break;
                        case "44":
                            ReturnStr += "D";
                            break;
                        case "45":
                            ReturnStr += "E";
                            break;
                        case "46":
                            ReturnStr += "F";
                            break;
                        default:
                            break;
                    }
                }
            }
            return ReturnStr;
        }
    }
}