public IProtocolPackage EncodeCommand(IProtocolCommand command, Dictionary <string, byte[]> paramBytes = null)
{
var package = new BytesProtocolPackage(command)
{
[StructureNames.CmdType] = { ComponentContent = command.CommandTypeCode },
[StructureNames.CmdByte] = { ComponentContent = command.CommandCode }
};
foreach (var definition in command.CommandDefinitions)
{
package[definition.StructureName].ComponentContent = definition.ContentBytes;
}
if (paramBytes != null)
{
foreach (var paramByte in paramBytes)
{
package[paramByte.Key].ComponentContent = paramByte.Value;
}
}
var crcValue = Globals.GetUsmbcrc16(package.GetBytes(), (ushort)(package.PackageLenth - 3));
package[StructureNames.CRCValue].ComponentContent = Globals.Uint16ToBytes(crcValue, false);
package.Finalization();
return(package);
}
public IProtocolPackage DecodeProtocol(byte[] bufferBytes, Protocol matchedProtocol)
{
var package = new BytesProtocolPackage()
{
Protocol = matchedProtocol, ReceiveDateTime = DateTime.Now
};
var structures = matchedProtocol.ProtocolStructures.ToList();
var currentIndex = 0;
for (var i = 0; i < structures.Count; i++)
{
var structure = structures.First(obj => obj.StructureIndex == i);
//协议中，数据段如果是自由组织的形式，那么数据库中设置数据段长度为零。解码时，按照协议中的DataLength段的值解码数据段。
var componentDataLength = structure.StructureName == StructureNames.Data && structure.StructureDataLength == 0
? Globals.BytesToInt16(package["DataLength"].ComponentContent, 0, true)
: structure.StructureDataLength;
if (currentIndex + componentDataLength > bufferBytes.Length)
{
package.Status = PackageStatus.NoEnoughBuffer;
return(package);
}
if (structure.StructureName == StructureNames.Data)
{
DetectCommand(package, matchedProtocol);
componentDataLength = package.Command.ReceiveBytesLength == 0 ? componentDataLength : package.Command.ReceiveBytesLength;
}
var component = new PackageComponent <byte[]>
{
ComponentName = structure.StructureName,
DataType = structure.DataType,
ComponentIndex = structure.StructureIndex,
ComponentContent = bufferBytes.SubBytes(currentIndex, currentIndex + componentDataLength)
};
currentIndex += componentDataLength;
package[structure.StructureName] = component;
}
DecodeCommand(package);
return(package);
}
