public Task <long> ReadSegments(
IObserver <RecordSegment> observer,
Stream stream,
CancellationToken cancellationToken)
{
return(Task.Factory.StartNew(() => {
var scanner = (IScanner)Activator.CreateInstance(this.SegmentsScannerType);
var initialOffset = stream.Position;
var lastOffset = initialOffset;
scanner.OffsetCallback = (offset, length) => {
if (length > 0 && offset >= 0)
{
var segment = new RecordSegment(initialOffset + offset, length);
lastOffset = initialOffset + offset + length;
observer.OnNext(segment);
}
};
scanner.Diagnostics = this.Diagnostics ?? TextWriter.Null;
scanner.SetSourceWithEncoding(
new InternalStreamWrapper(stream, stream.Position),
Encoding.UTF8.CodePage);
scanner.Parse(cancellationToken);
return lastOffset;
}, cancellationToken,
TaskCreationOptions.LongRunning,
this.TaskScheduler));
}
public Task<long> ReadSegments(
IObserver<RecordSegment> observer,
Stream stream,
CancellationToken cancellationToken)
{
return Task.Factory.StartNew(() => {
var scanner = (IScanner) Activator.CreateInstance(this.SegmentsScannerType);
var initialOffset = stream.Position;
var lastOffset = initialOffset;
scanner.OffsetCallback = (offset, length) => {
if (length > 0 && offset >= 0) {
var segment = new RecordSegment(initialOffset + offset, length);
lastOffset = initialOffset + offset + length;
observer.OnNext(segment);
}
};
scanner.Diagnostics = this.Diagnostics ?? TextWriter.Null;
scanner.SetSourceWithEncoding(
new InternalStreamWrapper(stream, stream.Position),
Encoding.UTF8.CodePage);
scanner.Parse(cancellationToken);
return lastOffset;
}, cancellationToken,
TaskCreationOptions.LongRunning,
this.TaskScheduler);
}