)

type scanner struct {
	pos       int64 // position in reader
	ipos      int64 // internal buffer position
	ifill     int64 // internal buffer fill
	end       int64
	buf       [chunk + 1]byte // internal buffer (with a lookback size of 1)
	nbuf      [chunk]byte     // next internal buffer
	fillReq   chan struct{}
	fillReady chan int64
	readerErr error // underlying reader error, if any
}

func newScanner(r io.Reader) *scanner {

				return nil, err
			}
			readers = append(readers, dirReaders...)
		} else {
			if !isValidFile(f) {
				fmt.Fprintf(cmd.ErrOrStderr(), "Skipping file %v, recognized file extensions are: %v\n", f, fileExtensions)
				continue
			}
			rs, err := gatherFile(f)
			if err != nil {
				return nil, err
			}
			readers = append(readers, rs)
		}
	}
	return readers, nil
}

	if algo == HighwayHash256S {
		return newStreamingBitrotReader(disk, data, bucket, filePath, tillOffset, algo, shardSize)
	}
	return newWholeBitrotReader(disk, bucket, filePath, algo, tillOffset, sum)
}

// Close all the readers.
func closeBitrotReaders(rs []io.ReaderAt) {
	for _, r := range rs {
		if r != nil {

			fmt.Println(args...)
		}
	}
	// Inject random reader/writer sleeps.
	const maxSleep = int(1 * time.Millisecond)
	doSleep := !testing.Short()
	rb := New(4 << 10).SetBlocking(true)

	// Reader
	var readErr error
	var wg sync.WaitGroup
	wg.Add(1)
	go func() {
		readRng := rand.New(rand.NewSource(1))
		defer wg.Done()
		defer rb.CloseWithError(readErr)
		buf := make([]byte, 1024)
		for {
			// Read

	var i int
	r := bytes.NewReader(data)
	scanner := newScanner(r)
	for scanner.pos < atomic.LoadInt64(&scanner.end) {
		c := scanner.next()
		if scanner.readerErr != nil {
			t.Fatal(scanner.readerErr)
		}
		if c != data[i] {
			t.Fatalf("expected %s, got %s", string(data[i]), string(c))
		}
		t.Logf("pos=%d remaining=%d (%s)", i, r.Len(), string(c))
		i++
	}
}

	checkEq(readAll(r), readAll(NewDummyDataGen(100-int64(len(alphabets)), 0)))
}

// Compares all the bytes returned by the given readers. Any Read
// errors cause a `false` result. A string describing the error is
// also returned.
func cmpReaders(r1, r2 io.Reader) (bool, string) {
	bufLen := 32 * 1024
	b1, b2 := make([]byte, bufLen), make([]byte, bufLen)
	for i := 0; true; i++ {
		n1, e1 := io.ReadFull(r1, b1)

                        },
                        "configuration": {
                            "@type": "type.googleapis.com/google.protobuf.StringValue",
                            "value": "{\"header_1\":\"some_value_1\",\"header_2\":\"another_value\"}"
                        }
                    }
                }
            },
            "lastUpdated": "2022-12-08T11:03:53.225Z"
        },
        {

                                "configuration": {
                                    "@type": "type.googleapis.com/google.protobuf.StringValue",
                                    "value": "{\"header_1\":\"some_value_1\",\"header_2\":\"another_value\"}"
                                }
                            }
                        }
                    },
                    "last_updated": "2022-12-08T11:03:53.225Z"

}

func (f *sftpDriver) AccessKey() string {
	return f.permissions.CriticalOptions["AccessKey"]
}

func (f *sftpDriver) Fileread(r *sftp.Request) (ra io.ReaderAt, err error) {
	// This is not timing the actual read operation, but the time it takes to prepare the reader.
	stopFn := globalSftpMetrics.log(r, f.AccessKey())
	defer stopFn(0, err)

	flags := r.Pflags()
	if !flags.Read {
		// sanity check

	if len(context) > 0 {
		err.context = context[0]
	}
	err.atChar = d.cur()
	err.pos[0] = d.lineNo + 1
	err.pos[1] = int(d.pos - d.lineStart)
	err.readerErr = d.readerErr
	return err