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- using Edge.Core.Parser.BinaryParser;
- using Edge.Core.Parser.BinaryParser.MessageEntity;
- using Edge.Core.Parser.BinaryParser.Util;
- using System;
- using System.Collections.Generic;
- using System.Linq;
- using System.Text;
- using System.Threading.Tasks;
- using WayneChina_IcCardReader_SinoChem.MessageEntity;
- namespace WayneChina_IcCardReader_SinoChem
- {
- public class Parser : ParserBase
- {
- private int crcType;
- public Parser(int crcType) : base(new MessageTemplateLookup())
- {
- this.crcType = crcType;
- }
- public override byte[] Serialize(MessageTemplateBase message)
- {
- var bytesWithoutCrc16 = base.Serialize(message).ToList();
- if (message.GetType().GetProperty("CRC") != null)
- {
- byte[] crc16;
- // skip the first of 0xFA.
- if (crcType == 1) // Wayne
- {
- crc16 = bytesWithoutCrc16.Skip(1).ToArray().ComputeChecksumBytesCrc16().Reverse().ToArray();
- }
- else if (crcType == 2) // Tokheim
- {
- crc16 = bytesWithoutCrc16.Skip(1).ToArray().Crc16Ccitt().ToArray();
- }
- else
- {
- crc16 = new byte[2] { 0xEE, 0xEE };
- }
- var processedBody = ProcessDoubleHexFAInMsgBody(bytesWithoutCrc16);
- var processedCrc = ProcessDoubleHexFAInCRC(crc16);
- var _ = processedBody.Concat(processedCrc);
- return _.ToArray();
- }
- return bytesWithoutCrc16.ToArray();
- }
- /// <summary>
- /// 转义字符:0FAH;在数据里每两个 0FAH 替换为一个 0FAH;在目标地址、源地址、帧号/控制、
- ///有效数据长度中不能出现 0FAH,转义字符不计入 CRC 中,CRC 中采用转义。
- /// </summary>
- /// <param name="original"></param>
- /// <returns></returns>
- private static byte[] ProcessDoubleHexFAInMsgBody(List<byte> original)
- {
- //====record 0xFA position============
- var indexs = new List<int>();
- for (int i = 4; i < original.Count; i++)
- {
- if (original[i] == 0xFA)
- {
- indexs.Add(i);
- }
- }
- //=====end=====
- if (!indexs.Any()) return original.ToArray();
- var originalLen = original.Skip(2).Take(2).GetBCD();
- //var newLen = (originalLen + indexs.Count).GetBCDBytes(2);
- var newLen = (originalLen).GetBCDBytes(2);
- original[2] = newLen[0];
- original[3] = newLen[1];
- byte[] _ = new byte[original.Count];
- original.CopyTo(_);
- var newList = _.ToList();
- for (int i = 0; i < indexs.Count; i++)
- {
- newList.Insert(indexs[i] + i, 0xFA);
- }
- return newList.ToArray();
- }
- private static byte[] ProcessDoubleHexFAInCRC(byte[] originalCrc)
- {
- var result = new List<byte>();
- result.Add(originalCrc[0]);
- if (originalCrc[0] == 0xFA)
- {
- result.Add(0xFA);
- }
- result.Add(originalCrc[1]);
- if (originalCrc[1] == 0xFA)
- {
- result.Add(0xFA);
- }
- return result.ToArray();
- }
- //public override MessageTemplateBase Deserialize(byte[] rawData)
- //{
- // // skip first 0xFA
- // return base.Deserialize(rawData.Skip(1).ToArray());
- //}
- //public override MessageTemplateBase Deserialize(byte[] rawData, MessageTemplateBase withTemplate)
- //{
- // // skip first 0xFA
- // return base.Deserialize(rawData.Skip(1).ToArray(), withTemplate);
- //}
- }
- }
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