void Mnu_openHexdumpClick(object sender, EventArgs e)
{
OpenFileDialog opendia = new OpenFileDialog();
opendia.InitialDirectory = TBL.OperatingSystem.DesktopDirectory;
opendia.Filter = "hex files (*.hex)|*.hex|All files (*.*)|*.*";
opendia.FilterIndex = 1;
opendia.RestoreDirectory = false;
if (opendia.ShowDialog() == DialogResult.OK)
{
int charCount = GetNumOfCharsInFile(opendia.FileName);
int byteCount = charCount / 2;
ThreadsafeReceiveBuffer recBuffer = new ThreadsafeReceiveBuffer(byteCount + 1);
int currentCharacter = 0;
string curFigure = "";
int ascii;
// well.. now read
try
{
using (System.IO.StreamReader sr = new System.IO.StreamReader(opendia.FileName))
{
while ((ascii = sr.Read()) != -1)
{
curFigure += ((char)(ascii)).ToString();
if ((currentCharacter % 2) == 1)
{
int intval = Convert.ToInt32(curFigure, 16); //Using ToUInt32 not ToUInt64, as per OP comment
recBuffer.AddByte((byte)(intval));
curFigure = "";
}
currentCharacter++;
}
}
}
catch
{
stdOut.Error("Parsing error at Character " + currentCharacter.ToString());
}
searchForFrames(recBuffer);
this.Controls.Add(log.Visualisation);
log.VisualizationFitWindowSize(this);
stdOut.Info("should now open " + opendia.FileName);
}
}
/// <summary>
/// Sucht die Position des ersten gültigen M3S-Frames in einem übergebenen Buffer
/// </summary>
/// <param name="rBuffer">Buffer, der durchsucht werden soll</param>
/// <returns>Position des ersten gültigen M3S-Frames (-1 wenn nichts gefunden wurde)</returns>
int GetFirstValidFramePosition(ThreadsafeReceiveBuffer rBuffer, out M3SProtocol oProtocol)
{
oProtocol = M3SProtocol.Invalid;
if (!rBuffer.DataAvailable) // Buffer Empty
{
return(-1);
}
if (rBuffer.DataPtr < protocol.MinimumFrameLength) // not enough Data available
{
return(-1);
}
int upperBound = -1;
for (int start = 0; start <= rBuffer.DataPtr - protocol.MinimumFrameLength; start++)
{
if (han.ExtractProtocol(rBuffer.ReadByte(start)) == M3SProtocol.Acknowledge)
{
if (protocol.IsFrame(rBuffer.readBytes(start, start + 4)))
{
oProtocol = M3SProtocol.Acknowledge;
return(start);
}
}
upperBound = rBuffer.ReadByte(start + protocol.UpperBoundPosition); // Ausgelesenes Upperbound aus angenommener Bitposition..
byte[] frameToTest = rBuffer.readBytes(start, start + upperBound + protocol.Overhead); // Zu testendes Frame
if (protocol.IsFrame(frameToTest))
{
oProtocol = han.ExtractProtocol(frameToTest[0]);
return(start);
}
}
return(-1);
}
void searchForFrames(ThreadsafeReceiveBuffer rBuffer)
{
searching.WaitOne();
M3SProtocol lastAnalyzedProtocol;
int firstAvailable = GetFirstValidFramePosition(rBuffer, out lastAnalyzedProtocol);
while (firstAvailable != -1)
{
if (firstAvailable != 0) // ganz am Anfang im Buffer steht irgendwas, aber kein gültiges Frame
{
byte[] someStream = rBuffer.readBytes(0, firstAvailable - 1);
log.Add(someStream);
}
int frameEndPosition;
if (lastAnalyzedProtocol == M3SProtocol.Acknowledge)
{
frameEndPosition = firstAvailable + protocol.AcknowledgeFrameLength - 1;
}
else
{
frameEndPosition = firstAvailable + rBuffer.ReadByte(firstAvailable + protocol.UpperBoundPosition) + protocol.Overhead;
}
byte[] frame = rBuffer.readBytes(firstAvailable, frameEndPosition);
log.Add(frame);
// Entfernen der gelesenen Byte..
rBuffer.FreeBytes(0, frameEndPosition);
rBuffer.Flush();
firstAvailable = GetFirstValidFramePosition(rBuffer, out lastAnalyzedProtocol); // Search for next files...
}
searching.Release();
}
