public List<TraceEvent> Index(StreamReader reader)
{
List<TraceEvent> events = new List<TraceEvent>();
long curPos = 0;
while (true)
{
TraceEvent evt = new TraceEvent();
evt.PositionStart = FindStringInStream(reader, RecordStart, curPos);
if (evt.PositionStart == -1)
break; // No new tracerecord found
ReadActivityID(reader, evt, evt.PositionStart, 300);
ReadTimeAndSource(reader, evt, evt.PositionStart, 120);
evt.PositionEnd = FindStringInStream(reader, RecordEnd, evt.PositionStart);
if (evt.PositionEnd == -1)
break; // A tracerecord was found, but the ending was not found
evt.PositionEnd = evt.PositionEnd + RecordEnd.Length;
evt.To = FindTo(reader, evt.PositionStart, evt.PositionEnd);
evt.Method = FindMethod(reader, evt.PositionStart, evt.PositionEnd);
// Start searching from the endposition again
curPos = evt.PositionEnd;
events.Add(evt);
}
OnProgress(reader.BaseStream.Length, reader.BaseStream.Length);
return events;
}
private void ReadActivityID(StreamReader reader, TraceEvent evt, long fromPosition, long sizeToScan)
{
reader.BaseStream.Seek(fromPosition - sizeToScan, SeekOrigin.Begin);
reader.DiscardBufferedData();
char[] buffer = new char[sizeToScan];
int charsRead = reader.ReadBlock(buffer, 0, buffer.Length);
string str = new string(buffer, 0, charsRead);
Match m = Regex.Match(str, ".*?ActivityID=\"{(.*?)}.*", RegexOptions.IgnoreCase);
if (m != null && m.Success)
{
string guid = m.Groups[1].Value;
Guid parsedGuid;
if (Guid.TryParse(guid, out parsedGuid))
evt.ActivityID = parsedGuid;
}
}
private void ReadTimeAndSource(StreamReader reader, TraceEvent evt, long fromPosition, long sizeToScan)
{
reader.BaseStream.Seek(fromPosition, SeekOrigin.Begin);
reader.DiscardBufferedData();
char[] buffer = new char[sizeToScan];
int charsRead = reader.ReadBlock(buffer, 0, buffer.Length);
string str = new string(buffer, 0, charsRead);
Match m = Regex.Match(str, @"Time=""(.*?)"".*?Source=""(.*?)""", RegexOptions.IgnoreCase);
if (m != null && m.Success)
{
string dt = m.Groups[1].Value;
DateTime parsedDt;
if (DateTime.TryParse(dt, out parsedDt))
evt.TimeCreated = parsedDt;
evt.Source = m.Groups[2].Value;
evt.Source = evt.Source.Replace("SendRequest", "").Replace("ReceiveReply", "").Replace("Send", "").Replace("Receive", "");
}
}
