public unsafe void ProcessAttachmentStream(DocumentsOperationContext context, BlittableJsonReaderObject data, ref DocumentItem.AttachmentStream attachment)
{
if (data.TryGet(nameof(AttachmentName.Hash), out LazyStringValue hash) == false ||
data.TryGet(nameof(AttachmentName.Size), out long size) == false ||
data.TryGet(nameof(DocumentItem.AttachmentStream.Tag), out LazyStringValue tag) == false)
{
throw new ArgumentException($"Data of attachment stream is not valid: {data}");
}
if (_writeBuffer == null)
{
_returnWriteBuffer = _context.GetManagedBuffer(out _writeBuffer);
}
attachment.Data = data;
attachment.Base64HashDispose = Slice.External(context.Allocator, hash, out attachment.Base64Hash);
attachment.TagDispose = Slice.External(context.Allocator, tag, out attachment.Tag);
while (size > 0)
{
var sizeToRead = (int)Math.Min(_writeBuffer.Length, size);
var read = _parser.Copy(_writeBuffer.Pointer, sizeToRead);
attachment.Stream.Write(_writeBuffer.Buffer.Array, _writeBuffer.Buffer.Offset, read.BytesRead);
if (read.Done == false)
{
var read2 = _peepingTomStream.Read(_buffer.Buffer.Array, _buffer.Buffer.Offset, _buffer.Length);
if (read2 == 0)
{
throw new EndOfStreamException("Stream ended without reaching end of stream content");
}
_parser.SetBuffer(_buffer, 0, read2);
}
size -= read.BytesRead;
}
attachment.Stream.Flush();
}