BTDB.KVDBLayer.OnDiskFileCollection.File.RandomRead C# (CSharp) Метод

            public void RandomRead(byte[] data, int offset, int size, ulong position, bool doNotCache)
            {
                lock (_lock)
                {
                    if (size > 0 && position < _writer.Ofs)
                    {
                        _stream.Position = (long)position;
                        var read = size;
                        if (_writer.Ofs - position < (ulong)read) read = (int)(_writer.Ofs - position);
                        if (_stream.Read(data, offset, read) != read)
                            throw new EndOfStreamException();
                        size -= read;
                        offset += read;
                        position += (ulong)read;
                    }
                    if (size == 0) return;
                    if ((ulong)_writer.GetCurrentPosition() < position + (ulong)size)
                        throw new EndOfStreamException();
                    Array.Copy(_writer.GetBuffer(), (int)(position - _writer.Ofs), data, offset, size);
                }
            }