public override long Seek()

in AdlsDotNetSDK/AdlsInputStream.cs [308:348]
41 lines of code
8 McCabe index (conditional complexity)

        public override long Seek(long offset, SeekOrigin origin)
        {
            if (IpStreamLog.IsTraceEnabled)
            {
                IpStreamLog.Trace($"ADLFileInputStream, Seek to offset {offset} from {Enum.GetName(typeof(SeekOrigin), origin)} for file {Filename} for client {Client.ClientId}");
            }
            if (_isDisposed)
            {
                throw new ObjectDisposedException("Stream is disposed");
            }
            long prevFilePointer = FilePointer;//Store previous Filepointer
            if (origin == SeekOrigin.Current)
            {
                FilePointer += offset;
            }
            else if (origin == SeekOrigin.Begin)
            {
                FilePointer = offset;
            }
            else//SeekOrigin.End
            {
                FilePointer = Entry.Length + offset;
            }
            if (FilePointer < 0)
            {
                FilePointer = prevFilePointer;
                throw new IOException("Cannot seek before the begining of the file");
            }
            if (FilePointer > Entry.Length)
            {
                FilePointer = prevFilePointer;
                throw new IOException("Cannot seek beyond the end of the file");
            }
            long diffFilePointer = FilePointer - prevFilePointer;//Calculate the offset between current pointer and new pointer
            BufferPointer += diffFilePointer;//Update the BufferPointer based on how much the FilePointer moved
            if (BufferPointer < 0 || BufferPointer >= BufferSize)
            {
                BufferPointer = BufferSize = 0;//Current Filepointer points to data which does not exist in buffer
            }
            return FilePointer;
        }