public IChunkStorageWriter <T> OpenForWrite()
{
_logger.Debug($"File '{_fileName}' was opened for write at position {_currentPosition}.");
var fileStream = FileWithBuffer.OpenAppend(_fileName, _fileBuffer);
fileStream.Seek(_currentPosition, SeekOrigin.Begin);
return(new ChunkFileStorageWriter(
fileStream,
_readerWriter,
this));
}
public IEnumerable <T> OpenForRead(long size)
{
if (size > _currentPosition)
{
throw new IndexOutOfRangeException();
}
var fileStream = FileWithBuffer.OpenRead(_fileName, _fileBuffer);
long endPosition = _currentPosition;
_currentPosition -= size;
_logger.Debug($"File '{_fileName}' was opened for read from position {_currentPosition} to {endPosition}.");
var rangeStream = new RangeStream(fileStream, _currentPosition, endPosition);
return(_readerWriter.ReadFromStream(rangeStream));
}