public void StartWatching()
{
if (File == null)
{
return;
}
bool firstRun = true;
long initialFileSize = File.Length;
long lastReadLength = initialFileSize - 1024;
if (lastReadLength < 0)
{
lastReadLength = 0;
}
new Thread(() =>
{
while (true)
{
long fileSize = new FileInfo(File.FullName).Length;
if (fileSize > lastReadLength)
{
using (FileStream fs = new FileStream(File.FullName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
fs.Seek(lastReadLength, SeekOrigin.Begin);
byte[] buffer = new byte[1024];
while (true)
{
int bytesRead = fs.Read(buffer, 0, buffer.Length);
if (firstRun)
{
lastReadLength = fileSize;
bytesRead = 0;
}
else
{
lastReadLength += bytesRead;
}
if (bytesRead == 0)
{
break;
}
string text = Encoding.ASCII.GetString(buffer, 0, bytesRead);
TextWritten.Invoke(this, text);
}
}
}
firstRun = false;
Thread.Sleep(100);
}
})
{
IsBackground = true
}.Start();
}
void OnWrite(string value)
{
TextWritten?.Invoke(value);
if (chainedWriters != null)
{
foreach (TextWriter cw in chainedWriters)
{
cw.Write(value);
}
}
}
void OnWrite(char[] buffer, int index, int count)
{
TextWritten?.Invoke(new string (buffer, index, count));
if (chainedWriters != null)
{
foreach (TextWriter cw in chainedWriters)
{
cw.Write(buffer, index, count);
}
}
}
public override void WriteLine(string value, params object[] args)
{
TextWritten?.Invoke(this, new TextWrittenEventArgs(string.Format(value, args)));
_output.WriteLine(value, args);
}
public override void WriteLine(string value)
{
TextWritten?.Invoke(this, new TextWrittenEventArgs(value));
_output.WriteLine(value);
}
protected virtual void OnTextWritten()
{
TextWritten?.Invoke(this, EventArgs.Empty);
}
