private void Dispose(bool disposing)
{
if (IsDisposed)
return; // Done already, so nothing left to do.
if (disposing)
{
if (_input != null)
_input.Close();
_input = null;
}
// Dispose unmanaged resources here, whether disposing is true or false.
// Main data members.
IsDisposed = true;
}
/// <summary>
/// Return the second level elements that are in the input file, including an optional first element.
/// </summary>
public IEnumerable<byte[]> GetSecondLevelElementBytes(string firstElementMarker, string recordMarker)
{
if (string.IsNullOrEmpty(recordMarker)) throw new ArgumentException("Null or empty string", "recordMarker");
_input = new AsyncFileReader(_pathname);
InitializeOffsets();
var recordMarkerAsBytes = FormatRecordMarker(recordMarker);
if (firstElementMarker != null && _currentOffset < _endOfRecordsOffset)
{
var firstElementMarkerAsBytes = FormatRecordMarker(firstElementMarker);
if (MatchMarker(firstElementMarkerAsBytes))
{
yield return MakeElement(firstElementMarkerAsBytes);
AdvanceToOpenAngleBracket();
}
}
// We've processed the special first element if any and should be at the first record marker (or end of file)
while (_currentOffset < _endOfRecordsOffset)
{
if (!MatchMarker(recordMarkerAsBytes))
{
var msg = string.Format("Can't find{0} main record with element name '{1}'",
firstElementMarker == null ? "" : string.Format(" optional element name '{0}' or", firstElementMarker),
recordMarker);
throw new ArgumentException(msg);
}
yield return MakeElement(recordMarkerAsBytes);
AdvanceToOpenAngleBracket();
}
_input.Close();
_input = null;
}