public long FindPositionData(long StartPosition)
{
if (Scanner.MinDataLengthBytes == 0)
{
throw new Exception("Укажите данные поиска");
}
TailBytes.Clear();
Scanner.BufferBytes.Clear();
this.FileFilteredReadStream.Scanner.BufferBytes.Clear();
long finded_position = -1;
long original_position_of_stream = Position;
long file_length = Length;
long WorkingReadPosition = Position = StartPosition;
while (WorkingReadPosition <= file_length || this.FileFilteredReadStream.Scanner.BufferBytes.Count > 0)
{
int this_byte = FileFilteredReadStream.ReadByte();
AddToBuffer(this_byte);
if (Scanner.ScanResult != null && Scanner.ScanResult.SuccessMatch)
{
Position = Position - Scanner.ScanResult.MatchUnit.GetDetectedSearchData().Length - this.FileFilteredReadStream.Scanner.BufferBytes.Count;
finded_position = Position;
break;
}
WorkingReadPosition++;
}
Position = original_position_of_stream;
return(finded_position);
}
private void AddToBuffer(int curr_byte)
{
if (curr_byte < 0)
{
return;
}
TailBytes.Add((byte)curr_byte);
Scanner.AddToBuffer((byte)curr_byte);
Scanner.CheckData();
}