/// <summary>
/// 将字节流转换成命令
/// </summary>
/// <param name="cmddata"></param>
/// <returns></returns>
public CmdTag Parse(byte[] cmddata)
{
CmdTag cmd = new CmdTag();
//命令类
cmd.CmdType = cmddata[3];
// cmd.CmdType = (UInt16)((cmd.CmdType << 8) | cmddata[4]);
//命令字
cmd.CmdCode = cmddata[4];
// cmd.CmdCode = (UInt16)((cmd.CmdCode << 8) | cmddata[6]);
//指令状态
cmd.CmdState = cmddata[5];
//设备ID
Array.Copy(cmddata, 6, cmd.DeviceInfo.Serial, 0, 7);
cmd.DeviceInfo.Parse(cmd.DeviceInfo.Serial);
//参数区
cmd.Param = new byte[cmddata.Length - CommandCommon.CMD_MIN_LENGTH];
Array.Copy(cmddata, 13, cmd.Param, 0, cmd.Param.Length);
return(cmd);
}
private static byte[] BuildCmd(byte cmdType, byte cmdCode, byte cmdState, byte safeCode)
{
CmdTag tag = new CmdTag();
tag.CmdType = cmdType;
tag.CmdCode = cmdCode;
tag.CmdState = cmdState;
tag.Param = new byte[0];
tag.DeviceInfo = new DeviceIdTag();
return(BuildCmd(tag, safeCode));
}
/// <summary>
/// 解析命令，返回处理后的命令列表
/// </summary>
/// <param name="cmdData">被处理命令的buffer</param>
/// <param name="safeCode">需要转义的转义码</param>
/// <param name="cmdList">处理后的命令列表</param>
private static void ParseCmd(ref CmdBuffer cmdData, byte safeCode, ref MemQueue <CmdTag> cmdList, string socketID)
{
CmdBuffer temp = new CmdBuffer();
byte sigByte = 0x00;
UInt16 cmd_length = 0;
sigByte = (byte)(safeCode - 0x01);
//解析命令,如果接收的数据长度小于最短命令长度,即命令接收不完整
if (cmdData.Length < CommandCommon.CMD_MIN_LENGTH)
{
return;
}
int sigByteStartIndex = 0;
lock (cmdData.Buffer)
{
// Debug.Print("Parse:{0}", FormatHelper.ByteArrayToHexString(cmdData.Buffer, cmdData.Length));
//查找协议头
sigByteStartIndex = Array.IndexOf(cmdData.Buffer, safeCode, 0, cmdData.Length);
}
//没有找到协议头
if (sigByteStartIndex < 0)
{
cmdData.Length = 0;
return;
}
//数据长度不够,即最后一个字节为协议标识
if ((sigByteStartIndex + 1) == cmdData.Length)
{
cmdData.Buffer[0] = safeCode;
cmdData.Length = 1;
return;
}
//第一字节非协议头
if (sigByteStartIndex > 0)
{
cmdData.Length = cmdData.Length - sigByteStartIndex;
if ((cmdData.Length <= 0) || (cmdData.Length >= CmdBuffer.BUFFER_MAX_LENGTH))
{
cmdData.Length = 0;
return;
}
Array.Copy(cmdData.Buffer, sigByteStartIndex, cmdData.Buffer, 0, cmdData.Length);
}
//查找协议尾
int sigByteEndIndex = 0;
lock (cmdData.Buffer)
{
sigByteEndIndex = Array.IndexOf(cmdData.Buffer, safeCode, 1, cmdData.Length - 1);
}
//没有找到协议尾
if (sigByteEndIndex < 0)
{
return;
}
//包头包尾粘连
if (sigByteEndIndex == 1)
{
cmdData.Length -= 1;
if (cmdData.Length <= 0)
{
cmdData.Length = 0;
return;
}
if (cmdData.Length == 1)
{
cmdData.Buffer[0] = safeCode;
cmdData.Length = 1;
return;
}
Array.Copy(cmdData.Buffer, 1, cmdData.Buffer, 0, cmdData.Length);
sigByteEndIndex = Array.IndexOf(cmdData.Buffer, safeCode, 1, cmdData.Length - 1);
}
//长度小于最短命令长度
if ((sigByteEndIndex + 1) < CommandCommon.CMD_MIN_LENGTH)
{
cmdData.Length = cmdData.Length - sigByteEndIndex - 1;
if (cmdData.Length > 0)
{
Array.Copy(cmdData.Buffer, sigByteEndIndex + 1, cmdData.Buffer, 0, cmdData.Length);
}
else
{
cmdData.Length = 0;
}
return;
}
//当前命令超长
if ((sigByteEndIndex + 1) >= CommandCommon.CMD_MAX_LENGTH)
{
cmdData.Length = cmdData.Length - sigByteEndIndex - 1;
if (cmdData.Length >= CmdBuffer.BUFFER_MAX_LENGTH)
{
cmdData.Length = 0;
return;
}
if (cmdData.Length > 0)
{
Array.Copy(cmdData.Buffer, sigByteEndIndex + 1, cmdData.Buffer, 0, cmdData.Length);
//递归调用
if (cmdData.Length >= CommandCommon.CMD_MIN_LENGTH)
{
ParseCmd(ref cmdData, safeCode, ref cmdList, socketID);
}
return;
}
if (cmdData.Length < 0)
{
cmdData.Length = 0;
}
return;
}
//拷贝命令数据
byte[] cmd_bytearray = new byte[sigByteEndIndex + 1];
Array.Copy(cmdData.Buffer, 0, cmd_bytearray, 0, cmd_bytearray.Length);
cmdData.Length = cmdData.Length - cmd_bytearray.Length;
if (cmdData.Length >= CmdBuffer.BUFFER_MAX_LENGTH)
{
cmdData.Length = 0;
return;
}
//安全容错
if (cmdData.Length > 0)
{
Array.Copy(cmdData.Buffer, sigByteEndIndex + 1, cmdData.Buffer, 0, cmdData.Length);
}
if (cmdData.Length < 0)
{
cmdData.Length = 0;
}
//执行解析
//1:处理转义字符
byte[] parsed_bytearray;
//调用时,除去头尾
UInt16 crc1 = ConvertSafeCodeToCmdSigByte(cmd_bytearray, safeCode, out parsed_bytearray);
UInt16 crc2 = 0x00;
// Debug.Print("Cmd:{0}", Utils.FormatHelper.ByteArrayToHexString( parsed_bytearray ));
crc2 = parsed_bytearray[parsed_bytearray.Length - 3];
crc2 = (UInt16)((crc2 << 8) | parsed_bytearray[parsed_bytearray.Length - 2]);
//2:校验crc
if (crc1 != crc2)
{
//Debug.Print("CRC非法,计算值:0x{0:X4} 指令值:{1:X4}", crc1, crc2);
//递归调用
if (cmdData.Length >= CommandCommon.CMD_MIN_LENGTH)
{
ParseCmd(ref cmdData, safeCode, ref cmdList, socketID);
}
return;
}
//长度
cmd_length = parsed_bytearray[2];
cmd_length = (UInt16)((cmd_length << 8) | parsed_bytearray[1]);
//指令长度非法
if ((cmd_length < CommandCommon.CMD_MIN_LENGTH) || (cmd_length > CommandCommon.CMD_MAX_LENGTH))
{
//Debug.Print("指令长度与协议长度不匹配,指令长度:{0} 数据:{1}", cmd_length, parsed_bytearray.Length);
//递归调用
if (cmdData.Length >= CommandCommon.CMD_MIN_LENGTH)
{
ParseCmd(ref cmdData, safeCode, ref cmdList, socketID);
}
return;
}
//3:开始解析成命令
CmdTag cmd = new CmdTag();
cmd = cmd.Parse(parsed_bytearray);
cmd.SocketID = socketID;
cmdList.Add(cmd); //加入至命令组
////递归调用
//if (cmdData.Length >= Common.CMD_MIN_LENGTH)
//{
// ParseCmd(ref cmdData, safeCode, ref cmdList,socketID);
//}
}
/// <summary>
/// 生成命令
/// </summary>
/// <param name="cmdTag">指令结构体</param>
/// <param name="safeCode">安全码，即命令头尾</param>
/// <returns>相关命令</returns>
private static byte[] BuildCmd(CmdTag cmdTag, byte safeCode)
{
byte[] cmd = new byte[CommandCommon.CMD_MIN_LENGTH + cmdTag.Param.Length];
int cmdIndex = 0;
int i = 0;
byte sigByte = 0x00;
sigByte = (byte)(safeCode - 0x01);
//开始组合
//1.起始标识位
cmd[0] = safeCode;
cmdIndex += 1;
//2.长度
cmd[cmdIndex] = (byte)(cmd.Length & 0x00FF);
cmdIndex += 1;
cmd[cmdIndex] = (byte)((cmd.Length & 0xFF00) >> 8);
cmdIndex += 1;
//生成命令类
cmd[cmdIndex] = (byte)(cmdTag.CmdType & 0x00FF);
cmdIndex += 1;
//生成命字
cmd[cmdIndex] = (byte)(cmdTag.CmdCode & 0x00FF);
cmdIndex += 1;
//状态
cmd[cmdIndex] = cmdTag.CmdState;
cmdIndex += 1;
//设备ID
Array.Copy(cmdTag.DeviceInfo.Serial, 0, cmd, cmdIndex, cmdTag.DeviceInfo.Serial.Length);
cmdIndex += cmdTag.DeviceInfo.Serial.Length;
//数据区
Array.Copy(cmdTag.Param, 0, cmd, cmdIndex, cmdTag.Param.Length);
//cmdIndex += cmdTag.Param.Length;
//计算校验码
UInt16 crc = FormatHelper.CRC16(cmd, 0, cmd.Length - 3);
//添加校验码
cmd[cmd.Length - 3] = (byte)((crc & 0xFF00) >> 8);
// cmdIndex += 1;
cmd[cmd.Length - 2] = (byte)(crc & 0x00FF);
// cmdIndex += 1;
cmd[cmd.Length - 1] = safeCode;
// cmdIndex += 1;
//处理转义字
byte[] temp = new byte[cmd.Length * 2];
i = 1;
cmdIndex = 1;
temp[0] = cmd[0];
while (i < (cmd.Length - 1))
{
temp[cmdIndex] = cmd[i];
if (temp[cmdIndex] == sigByte)
{
// temp[cmdIndex] = safeCode;
cmdIndex += 1;
temp[cmdIndex] = 0x02;
}
if (temp[cmdIndex] == safeCode)
{
temp[cmdIndex] = sigByte;
cmdIndex += 1;
temp[cmdIndex] = 0x01;
}
cmdIndex += 1;
i++;
}
//添加标识尾
temp[cmdIndex] = safeCode;
cmdIndex += 1;
byte[] ret = new byte[cmdIndex];
Array.Copy(temp, ret, cmdIndex);
return(ret);
}
/// <summary>
/// 生成设备间的通信协议
/// </summary>
/// <param name="cmdTag"></param>
/// <returns></returns>
public static byte[] BuildDeviceCmd(CmdTag cmdTag)
{
return(BuildCmd(cmdTag, CommandCommon.CMD_DEVICE_SAFE_CODE));
}
/// <summary>
/// 生成平台间的通信协议
/// </summary>
/// <param name="cmdTag"></param>
/// <param name="safeCode"></param>
/// <returns></returns>
public static byte[] BuildPlatformCmd(CmdTag cmdTag)
{
return(BuildCmd(cmdTag, CommandCommon.CMD_PLATFORM_SAFE_CODE));
}