/** * Copies the most recent data aquisition * */ public MHMDataSet stopAddingData() { if (index > 1) { MHMDataSet d = new MHMDataSet(index - 1, startTime); for (int i = 0; i < index - 1; i++) { d.addDataPoint(Bx[i], By[i], Bz[i], Bnorm[i], timestamp[i], T[i]); } return(d); } else { return(null); } }
public MHMDataSet updateReading() { //get the newest file string[] files = Directory.GetFiles(filePath, "*.csv"); DateTime[] fileWrites = new DateTime[files.Length]; for (int i = 0; i < fileWrites.Length; i++) { fileWrites[i] = File.GetLastWriteTime(files[i]); } Array.Sort(fileWrites, files); //check if the file is new or whether we are already loading from it if (!currentFilename.Equals(files[files.Length - 1])) { //restart the data aquisition, remember the youngest file is the last one currentFilename = files[files.Length - 1]; prevLineCount = 0; data = new MHMDataSet(); } //check if the no. of lines has increased since the last time int lineCount = 0; using (FileStream stream = File.Open(currentFilename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) { using (StreamReader reader = new StreamReader(stream)) { string line = null; while ((line = reader.ReadLine()) != null) { lineCount++; } } } if (lineCount > prevLineCount) { data.startAddingData(); int curLine = 0; try { using (FileStream stream = File.Open(currentFilename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)) { using (StreamReader reader = new StreamReader(stream)) { string line; while ((line = reader.ReadLine()) != null) { //check of the header has been found (the file is not new if the header is already here) if (prevLineCount == 0) { //find the header if (String.Equals("DATA", line)) { line = reader.ReadLine(); curLine++; string[] pieces = line.Split(';'); header = pieces; prevLineCount = curLine; } } else { //add new data lines to the buffer if (curLine > prevLineCount) { string[] pieces = line.Split(';'); data.addDataPoint(Convert.ToDouble(pieces[4]), Convert.ToDouble(pieces[5]), Convert.ToDouble(pieces[6]), Convert.ToInt32(pieces[0]), Convert.ToInt32(pieces[1]), Convert.ToInt32(pieces[2]), Convert.ToInt32(pieces[3]), Convert.ToDouble(pieces[7])); } } curLine++; } } } } catch (Exception e) { Console.WriteLine(e.Message); } Console.WriteLine(curLine - prevLineCount); prevLineCount = curLine; return(data.stopAddingData()); } else { return(null); } }