AppMetrics.DataReader.ReadLastLine C# (CSharp) Method

        public static string ReadLastLine(Stream stream, Encoding encoding)
        {
            var buf = new byte[1024 * 128];
            var seekPos = Math.Min(buf.Length, stream.Length - stream.Position);
            stream.Seek(-seekPos, SeekOrigin.End);
            var lastBlockLength = stream.Read(buf, 0, buf.Length);

            int i = lastBlockLength - 2;
            if (i < 0)
                return null;

            for (; i > 0; i--)
            {
                if (buf[i] == '\n')
                {
                    i++;
                    break;
                }
            }

            var lastLine = encoding.GetString(buf, i, lastBlockLength - i);
            return lastLine;
        }