}

	want = want[:0]
	entries, err = r.readN(0, false, true, false, "")
	if err != nil {
		t.Fatal(err, entries.len())
	}
	if entries.len() != len(want) {
		t.Fatal("unexpected length:", entries.len(), "want:", len(want))
	}

	// Reload.
	r = loadMetacacheSample(t)
	defer r.Close()
	entries, err = r.readN(0, false, true, false, "")
	if err != nil {
		t.Fatal(err, entries.len())
	}

}}

// metacacheReader allows reading a cache stream.
type metacacheReader struct {
	mr      *msgp.Reader
	current metaCacheEntry
	err     error // stateful error
	closer  func()
	creator func() error
}

// newMetacacheReader creates a new cache reader.
// Nothing will be read from the stream yet.
func newMetacacheReader(r io.Reader) *metacacheReader {
	dec := s2DecPool.Get().(*s2.Reader)

    return;
  }

  TF_RandomAccessFile reader;
  NewRandomAccessFile(filesystem, path, &reader, status);
  if (TF_GetCode(status) != TF_OK) return;
  char* buffer = static_cast<char*>(plugin_memory_allocate(metadata->size()));
  int64_t read =
      tf_random_access_file::Read(&reader, 0, metadata->size(), buffer, status);
  tf_random_access_file::Cleanup(&reader);
  if (TF_GetCode(status) != TF_OK) return;

		}
	}
	o.debugln("forwarded to ", o.Prefix, "marker:", o.Marker, "sep:", o.Separator)

	// Filter
	if !o.Recursive {
		entries.o = make(metaCacheEntries, 0, o.Limit)
		pastPrefix := false
		err := r.readFn(func(entry metaCacheEntry) bool {
			if o.Prefix != "" && !strings.HasPrefix(entry.name, o.Prefix) {
				// We are past the prefix, don't continue.
				pastPrefix = true
				return false
			}

				p.readFn()     // e.g. copy trailers
				p.readFn = nil // not sticky like p.err
			}
			p.b = nil
			return 0, p.err
		}
		p.c.Wait()
	}
}

var (
	http2errClosedPipeWrite        = errors.New("write on closed buffer")
	http2errUninitializedPipeWrite = errors.New("write on uninitialized buffer")
)

// Write copies bytes from p into the buffer and wakes a reader.

			src:      r,
			md5:      NewUUIDHash(forceMD5),
			checksum: etag,
		}
	}
	return &Reader{
		src:      r,
		md5:      md5.New(),
		checksum: etag,
	}
}

// Read reads up to len(p) bytes from the underlying
// io.Reader as specified by the io.Reader interface.
func (r *Reader) Read(p []byte) (int, error) {
	n, err := r.src.Read(p)
	r.readN += int64(n)
	r.md5.Write(p[:n])

	"fmt"
	"io"

	"internal/trace/event"
	"internal/trace/version"
)

// Reader parses trace bytes with only very basic validation
// into an event stream.
type Reader struct {
	r     *bufio.Reader
	v     version.Version
	specs []event.Spec
}

// NewReader creates a new reader for the trace wire format.
func NewReader(r io.Reader) (*Reader, error) {
	br := bufio.NewReader(r)
	v, err := version.ReadHeader(br)

}

var errClosed = errors.New("lzw: reader/writer is closed")

// Close closes the [Reader] and returns an error for any future read operation.
// It does not close the underlying [io.Reader].
func (r *Reader) Close() error {
	r.err = errClosed // in case any Reads come along
	return nil
}

// Reset clears the [Reader]'s state and allows it to be reused again
// as a new [Reader].

	return r.error
}

// readSeekerFromReader converts an io.Reader into an io.ReadSeeker.
// In general Seek may not be efficient, but it is optimized for
// common cases such as seeking to the end to find the length of the
// data.
type readSeekerFromReader struct {
	reset  func() (io.Reader, error)
	r      io.Reader
	size   int64
	offset int64
}

func (r *readSeekerFromReader) start() {
	x, err := r.reset()

// ReadAt blocks until either all the data is available or an error occurs.
// In this respect ReadAt is different from Read.
//
// If the n = len(p) bytes returned by ReadAt are at the end of the
// input source, ReadAt may return either err == EOF or err == nil.
//
// If ReadAt is reading from an input source with a seek offset,
// ReadAt should not affect nor be affected by the underlying