if strings.TrimSpace(right) == "*" {
		return true
	}
	return canonicalizeETag(left) == canonicalizeETag(right)
}

// setPutObjHeaders sets all the necessary headers returned back
// upon a success Put/Copy/CompleteMultipart/Delete requests
// to activate delete only headers set delete as true
func setPutObjHeaders(w http.ResponseWriter, objInfo ObjectInfo, del bool, h http.Header) {

	// expected quorum, proceed with EcIndex based
	// disk order.
	if inconsistent < fi.Erasure.ParityBlocks {
		return shuffledDisks, shuffledPartsMetadata
	}

	// fall back to original distribution based order.
	return shuffleDisksAndPartsMetadata(disks, metaArr, fi)
}

// Return shuffled partsMetadata depending on fi.Distribution.

        // we know ( [ )
        if (rangeMapEntry.getUpperBound().compareTo(rangeToRemove.upperBound) > 0) {
          // we know ( [ ] ), so insert the range ] ) back into the map --
          // it's being split apart
          putRangeMapEntry(
              rangeToRemove.upperBound,
              rangeMapEntry.getUpperBound(),

// by AWS S3.
//
// An AWS S3 ETag is 16 bytes long and, in case of a multipart
// upload, has a `-N` suffix encoding the number of object parts.
// An ETag is not AWS S3 compatible when encrypted. When sending
// an ETag back to an S3 client it has to be formatted to be
// AWS S3 compatible.
//
// Therefore, Format returns the last 16 bytes of an encrypted
// ETag.
//
// In general, a caller has to distinguish the following cases:

	onlineDisks, metaArr = shuffleDisksAndPartsMetadataByIndex(onlineDisks, metaArr, fi)

	// For negative length read everything.
	if length < 0 {
		length = fi.Size - startOffset
	}

	// Reply back invalid range if the input offset and length fall out of range.
	if startOffset > fi.Size || startOffset+length > fi.Size {
		return InvalidRange{startOffset, length, fi.Size}
	}

	// Get start part index and offset.

// A Header represents a single header in a tar archive.
// Some fields may not be populated.
//
// For forward compatibility, users that retrieve a Header from Reader.Next,
// mutate it in some ways, and then pass it back to Writer.WriteHeader
// should do so by creating a new Header and copying the fields
// that they are interested in preserving.
type Header struct {
	// Typeflag is the type of header entry.

	Erasure ErasureInfo `msg:"ei"`

	MarkDeleted      bool             `msg:"md"` // mark this version as deleted
	ReplicationState ReplicationState `msg:"rs"` // Internal replication state to be passed back in ObjectInfo

	Data []byte `msg:"d,allownil"` // optionally carries object data

	NumVersions      int       `msg:"nv"`
	SuccessorModTime time.Time `msg:"smt"`

	nonLoopBackIPs := localIP4.FuncMatch(func(ip string, matchString string) bool {
		return !net.ParseIP(ip).IsLoopback()
	}, "")
	if len(nonLoopBackIPs) == 0 {
		t.Fatalf("No non-loop back IP address found for this host")
	}
	nonLoopBackIP := nonLoopBackIPs.ToSlice()[0]

	mustAbs := func(s string) string {
		s, err := filepath.Abs(s)
		if err != nil {
			t.Fatal(err)
		}
		return s

type FileHeader struct {
	// Name is the name of the file.
	//
	// It must be a relative path, not start with a drive letter (such as "C:"),
	// and must use forward slashes instead of back slashes. A trailing slash
	// indicates that this file is a directory and should have no data.
	Name string

	// Comment is any arbitrary user-defined string shorter than 64KiB.
	Comment string

   * Future}.
   *
   * <p>Usage example:
   *
   * {@snippet :
   * ListenableFuture<Integer> fetchCounterFuture = ...;
   *
   * // Falling back to a zero counter in case an exception happens when
   * // processing the RPC to fetch counters.
   * ListenableFuture<Integer> faultTolerantFuture = Futures.catching(