rebase: update kubernetes to latest

updating the kubernetes release to the
latest in main go.mod

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/github.com/fxamacker/cbor/v2/diagnose.go

@@ -0,0 +1,724 @@
+// Copyright (c) Faye Amacker. All rights reserved.
+// Licensed under the MIT License. See LICENSE in the project root for license information.
+
+package cbor
+
+import (
+	"bytes"
+	"encoding/base32"
+	"encoding/base64"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"math/big"
+	"strconv"
+	"unicode/utf16"
+	"unicode/utf8"
+
+	"github.com/x448/float16"
+)
+
+// DiagMode is the main interface for CBOR diagnostic notation.
+type DiagMode interface {
+	// Diagnose returns extended diagnostic notation (EDN) of CBOR data items using this DiagMode.
+	Diagnose([]byte) (string, error)
+
+	// DiagnoseFirst returns extended diagnostic notation (EDN) of the first CBOR data item using the DiagMode. Any remaining bytes are returned in rest.
+	DiagnoseFirst([]byte) (string, []byte, error)
+
+	// DiagOptions returns user specified options used to create this DiagMode.
+	DiagOptions() DiagOptions
+}
+
+// ByteStringEncoding specifies the base encoding that byte strings are notated.
+type ByteStringEncoding uint8
+
+const (
+	// ByteStringBase16Encoding encodes byte strings in base16, without padding.
+	ByteStringBase16Encoding ByteStringEncoding = iota
+
+	// ByteStringBase32Encoding encodes byte strings in base32, without padding.
+	ByteStringBase32Encoding
+
+	// ByteStringBase32HexEncoding encodes byte strings in base32hex, without padding.
+	ByteStringBase32HexEncoding
+
+	// ByteStringBase64Encoding encodes byte strings in base64url, without padding.
+	ByteStringBase64Encoding
+
+	maxByteStringEncoding
+)
+
+func (bse ByteStringEncoding) valid() error {
+	if bse >= maxByteStringEncoding {
+		return errors.New("cbor: invalid ByteStringEncoding " + strconv.Itoa(int(bse)))
+	}
+	return nil
+}
+
+// DiagOptions specifies Diag options.
+type DiagOptions struct {
+	// ByteStringEncoding specifies the base encoding that byte strings are notated.
+	// Default is ByteStringBase16Encoding.
+	ByteStringEncoding ByteStringEncoding
+
+	// ByteStringHexWhitespace specifies notating with whitespace in byte string
+	// when ByteStringEncoding is ByteStringBase16Encoding.
+	ByteStringHexWhitespace bool
+
+	// ByteStringText specifies notating with text in byte string
+	// if it is a valid UTF-8 text.
+	ByteStringText bool
+
+	// ByteStringEmbeddedCBOR specifies notating embedded CBOR in byte string
+	// if it is a valid CBOR bytes.
+	ByteStringEmbeddedCBOR bool
+
+	// CBORSequence specifies notating CBOR sequences.
+	// otherwise, it returns an error if there are more bytes after the first CBOR.
+	CBORSequence bool
+
+	// FloatPrecisionIndicator specifies appending a suffix to indicate float precision.
+	// Refer to https://www.rfc-editor.org/rfc/rfc8949.html#name-encoding-indicators.
+	FloatPrecisionIndicator bool
+
+	// MaxNestedLevels specifies the max nested levels allowed for any combination of CBOR array, maps, and tags.
+	// Default is 32 levels and it can be set to [4, 65535]. Note that higher maximum levels of nesting can
+	// require larger amounts of stack to deserialize. Don't increase this higher than you require.
+	MaxNestedLevels int
+
+	// MaxArrayElements specifies the max number of elements for CBOR arrays.
+	// Default is 128*1024=131072 and it can be set to [16, 2147483647]
+	MaxArrayElements int
+
+	// MaxMapPairs specifies the max number of key-value pairs for CBOR maps.
+	// Default is 128*1024=131072 and it can be set to [16, 2147483647]
+	MaxMapPairs int
+}
+
+// DiagMode returns a DiagMode with immutable options.
+func (opts DiagOptions) DiagMode() (DiagMode, error) {
+	return opts.diagMode()
+}
+
+func (opts DiagOptions) diagMode() (*diagMode, error) {
+	if err := opts.ByteStringEncoding.valid(); err != nil {
+		return nil, err
+	}
+
+	decMode, err := DecOptions{
+		MaxNestedLevels:  opts.MaxNestedLevels,
+		MaxArrayElements: opts.MaxArrayElements,
+		MaxMapPairs:      opts.MaxMapPairs,
+	}.decMode()
+	if err != nil {
+		return nil, err
+	}
+
+	return &diagMode{
+		byteStringEncoding:      opts.ByteStringEncoding,
+		byteStringHexWhitespace: opts.ByteStringHexWhitespace,
+		byteStringText:          opts.ByteStringText,
+		byteStringEmbeddedCBOR:  opts.ByteStringEmbeddedCBOR,
+		cborSequence:            opts.CBORSequence,
+		floatPrecisionIndicator: opts.FloatPrecisionIndicator,
+		decMode:                 decMode,
+	}, nil
+}
+
+type diagMode struct {
+	byteStringEncoding      ByteStringEncoding
+	byteStringHexWhitespace bool
+	byteStringText          bool
+	byteStringEmbeddedCBOR  bool
+	cborSequence            bool
+	floatPrecisionIndicator bool
+	decMode                 *decMode
+}
+
+// DiagOptions returns user specified options used to create this DiagMode.
+func (dm *diagMode) DiagOptions() DiagOptions {
+	return DiagOptions{
+		ByteStringEncoding:      dm.byteStringEncoding,
+		ByteStringHexWhitespace: dm.byteStringHexWhitespace,
+		ByteStringText:          dm.byteStringText,
+		ByteStringEmbeddedCBOR:  dm.byteStringEmbeddedCBOR,
+		CBORSequence:            dm.cborSequence,
+		FloatPrecisionIndicator: dm.floatPrecisionIndicator,
+		MaxNestedLevels:         dm.decMode.maxNestedLevels,
+		MaxArrayElements:        dm.decMode.maxArrayElements,
+		MaxMapPairs:             dm.decMode.maxMapPairs,
+	}
+}
+
+// Diagnose returns extended diagnostic notation (EDN) of CBOR data items using the DiagMode.
+func (dm *diagMode) Diagnose(data []byte) (string, error) {
+	return newDiagnose(data, dm.decMode, dm).diag(dm.cborSequence)
+}
+
+// DiagnoseFirst returns extended diagnostic notation (EDN) of the first CBOR data item using the DiagMode. Any remaining bytes are returned in rest.
+func (dm *diagMode) DiagnoseFirst(data []byte) (diagNotation string, rest []byte, err error) {
+	return newDiagnose(data, dm.decMode, dm).diagFirst()
+}
+
+var defaultDiagMode, _ = DiagOptions{}.diagMode()
+
+// Diagnose returns extended diagnostic notation (EDN) of CBOR data items
+// using the default diagnostic mode.
+//
+// Refer to https://www.rfc-editor.org/rfc/rfc8949.html#name-diagnostic-notation.
+func Diagnose(data []byte) (string, error) {
+	return defaultDiagMode.Diagnose(data)
+}
+
+// Diagnose returns extended diagnostic notation (EDN) of the first CBOR data item using the DiagMode. Any remaining bytes are returned in rest.
+func DiagnoseFirst(data []byte) (diagNotation string, rest []byte, err error) {
+	return defaultDiagMode.DiagnoseFirst(data)
+}
+
+type diagnose struct {
+	dm *diagMode
+	d  *decoder
+	w  *bytes.Buffer
+}
+
+func newDiagnose(data []byte, decm *decMode, diagm *diagMode) *diagnose {
+	return &diagnose{
+		dm: diagm,
+		d:  &decoder{data: data, dm: decm},
+		w:  &bytes.Buffer{},
+	}
+}
+
+func (di *diagnose) diag(cborSequence bool) (string, error) {
+	// CBOR Sequence
+	firstItem := true
+	for {
+		switch err := di.wellformed(cborSequence); err {
+		case nil:
+			if !firstItem {
+				di.w.WriteString(", ")
+			}
+			firstItem = false
+			if itemErr := di.item(); itemErr != nil {
+				return di.w.String(), itemErr
+			}
+
+		case io.EOF:
+			if firstItem {
+				return di.w.String(), err
+			}
+			return di.w.String(), nil
+
+		default:
+			return di.w.String(), err
+		}
+	}
+}
+
+func (di *diagnose) diagFirst() (diagNotation string, rest []byte, err error) {
+	err = di.wellformed(true)
+	if err == nil {
+		err = di.item()
+	}
+
+	if err == nil {
+		// Return EDN and the rest of the data slice (which might be len 0)
+		return di.w.String(), di.d.data[di.d.off:], nil
+	}
+
+	return di.w.String(), nil, err
+}
+
+func (di *diagnose) wellformed(allowExtraData bool) error {
+	off := di.d.off
+	err := di.d.wellformed(allowExtraData, false)
+	di.d.off = off
+	return err
+}
+
+func (di *diagnose) item() error { //nolint:gocyclo
+	initialByte := di.d.data[di.d.off]
+	switch initialByte {
+	case cborByteStringWithIndefiniteLengthHead,
+		cborTextStringWithIndefiniteLengthHead: // indefinite-length byte/text string
+		di.d.off++
+		if isBreakFlag(di.d.data[di.d.off]) {
+			di.d.off++
+			switch initialByte {
+			case cborByteStringWithIndefiniteLengthHead:
+				// indefinite-length bytes with no chunks.
+				di.w.WriteString(`''_`)
+				return nil
+			case cborTextStringWithIndefiniteLengthHead:
+				// indefinite-length text with no chunks.
+				di.w.WriteString(`""_`)
+				return nil
+			}
+		}
+
+		di.w.WriteString("(_ ")
+
+		i := 0
+		for !di.d.foundBreak() {
+			if i > 0 {
+				di.w.WriteString(", ")
+			}
+
+			i++
+			// wellformedIndefiniteString() already checked that the next item is a byte/text string.
+			if err := di.item(); err != nil {
+				return err
+			}
+		}
+
+		di.w.WriteByte(')')
+		return nil
+
+	case cborArrayWithIndefiniteLengthHead: // indefinite-length array
+		di.d.off++
+		di.w.WriteString("[_ ")
+
+		i := 0
+		for !di.d.foundBreak() {
+			if i > 0 {
+				di.w.WriteString(", ")
+			}
+
+			i++
+			if err := di.item(); err != nil {
+				return err
+			}
+		}
+
+		di.w.WriteByte(']')
+		return nil
+
+	case cborMapWithIndefiniteLengthHead: // indefinite-length map
+		di.d.off++
+		di.w.WriteString("{_ ")
+
+		i := 0
+		for !di.d.foundBreak() {
+			if i > 0 {
+				di.w.WriteString(", ")
+			}
+
+			i++
+			// key
+			if err := di.item(); err != nil {
+				return err
+			}
+
+			di.w.WriteString(": ")
+
+			// value
+			if err := di.item(); err != nil {
+				return err
+			}
+		}
+
+		di.w.WriteByte('}')
+		return nil
+	}
+
+	t := di.d.nextCBORType()
+	switch t {
+	case cborTypePositiveInt:
+		_, _, val := di.d.getHead()
+		di.w.WriteString(strconv.FormatUint(val, 10))
+		return nil
+
+	case cborTypeNegativeInt:
+		_, _, val := di.d.getHead()
+		if val > math.MaxInt64 {
+			// CBOR negative integer overflows int64, use big.Int to store value.
+			bi := new(big.Int)
+			bi.SetUint64(val)
+			bi.Add(bi, big.NewInt(1))
+			bi.Neg(bi)
+			di.w.WriteString(bi.String())
+			return nil
+		}
+
+		nValue := int64(-1) ^ int64(val)
+		di.w.WriteString(strconv.FormatInt(nValue, 10))
+		return nil
+
+	case cborTypeByteString:
+		b, _ := di.d.parseByteString()
+		return di.encodeByteString(b)
+
+	case cborTypeTextString:
+		b, err := di.d.parseTextString()
+		if err != nil {
+			return err
+		}
+		return di.encodeTextString(string(b), '"')
+
+	case cborTypeArray:
+		_, _, val := di.d.getHead()
+		count := int(val)
+		di.w.WriteByte('[')
+
+		for i := 0; i < count; i++ {
+			if i > 0 {
+				di.w.WriteString(", ")
+			}
+			if err := di.item(); err != nil {
+				return err
+			}
+		}
+		di.w.WriteByte(']')
+		return nil
+
+	case cborTypeMap:
+		_, _, val := di.d.getHead()
+		count := int(val)
+		di.w.WriteByte('{')
+
+		for i := 0; i < count; i++ {
+			if i > 0 {
+				di.w.WriteString(", ")
+			}
+			// key
+			if err := di.item(); err != nil {
+				return err
+			}
+			di.w.WriteString(": ")
+			// value
+			if err := di.item(); err != nil {
+				return err
+			}
+		}
+		di.w.WriteByte('}')
+		return nil
+
+	case cborTypeTag:
+		_, _, tagNum := di.d.getHead()
+		switch tagNum {
+		case tagNumUnsignedBignum:
+			if nt := di.d.nextCBORType(); nt != cborTypeByteString {
+				return newInadmissibleTagContentTypeError(
+					tagNumUnsignedBignum,
+					"byte string",
+					nt.String())
+			}
+
+			b, _ := di.d.parseByteString()
+			bi := new(big.Int).SetBytes(b)
+			di.w.WriteString(bi.String())
+			return nil
+
+		case tagNumNegativeBignum:
+			if nt := di.d.nextCBORType(); nt != cborTypeByteString {
+				return newInadmissibleTagContentTypeError(
+					tagNumNegativeBignum,
+					"byte string",
+					nt.String(),
+				)
+			}
+
+			b, _ := di.d.parseByteString()
+			bi := new(big.Int).SetBytes(b)
+			bi.Add(bi, big.NewInt(1))
+			bi.Neg(bi)
+			di.w.WriteString(bi.String())
+			return nil
+
+		default:
+			di.w.WriteString(strconv.FormatUint(tagNum, 10))
+			di.w.WriteByte('(')
+			if err := di.item(); err != nil {
+				return err
+			}
+			di.w.WriteByte(')')
+			return nil
+		}
+
+	case cborTypePrimitives:
+		_, ai, val := di.d.getHead()
+		switch ai {
+		case additionalInformationAsFalse:
+			di.w.WriteString("false")
+			return nil
+
+		case additionalInformationAsTrue:
+			di.w.WriteString("true")
+			return nil
+
+		case additionalInformationAsNull:
+			di.w.WriteString("null")
+			return nil
+
+		case additionalInformationAsUndefined:
+			di.w.WriteString("undefined")
+			return nil
+
+		case additionalInformationAsFloat16,
+			additionalInformationAsFloat32,
+			additionalInformationAsFloat64:
+			return di.encodeFloat(ai, val)
+
+		default:
+			di.w.WriteString("simple(")
+			di.w.WriteString(strconv.FormatUint(val, 10))
+			di.w.WriteByte(')')
+			return nil
+		}
+	}
+
+	return nil
+}
+
+// writeU16 format a rune as "\uxxxx"
+func (di *diagnose) writeU16(val rune) {
+	di.w.WriteString("\\u")
+	var in [2]byte
+	in[0] = byte(val >> 8)
+	in[1] = byte(val)
+	sz := hex.EncodedLen(len(in))
+	di.w.Grow(sz)
+	dst := di.w.Bytes()[di.w.Len() : di.w.Len()+sz]
+	hex.Encode(dst, in[:])
+	di.w.Write(dst)
+}
+
+var rawBase32Encoding = base32.StdEncoding.WithPadding(base32.NoPadding)
+var rawBase32HexEncoding = base32.HexEncoding.WithPadding(base32.NoPadding)
+
+func (di *diagnose) encodeByteString(val []byte) error {
+	if len(val) > 0 {
+		if di.dm.byteStringText && utf8.Valid(val) {
+			return di.encodeTextString(string(val), '\'')
+		}
+
+		if di.dm.byteStringEmbeddedCBOR {
+			di2 := newDiagnose(val, di.dm.decMode, di.dm)
+			// should always notating embedded CBOR sequence.
+			if str, err := di2.diag(true); err == nil {
+				di.w.WriteString("<<")
+				di.w.WriteString(str)
+				di.w.WriteString(">>")
+				return nil
+			}
+		}
+	}
+
+	switch di.dm.byteStringEncoding {
+	case ByteStringBase16Encoding:
+		di.w.WriteString("h'")
+		if di.dm.byteStringHexWhitespace {
+			sz := hex.EncodedLen(len(val))
+			if len(val) > 0 {
+				sz += len(val) - 1
+			}
+			di.w.Grow(sz)
+
+			dst := di.w.Bytes()[di.w.Len():]
+			for i := range val {
+				if i > 0 {
+					dst = append(dst, ' ')
+				}
+				hex.Encode(dst[len(dst):len(dst)+2], val[i:i+1])
+				dst = dst[:len(dst)+2]
+			}
+			di.w.Write(dst)
+		} else {
+			sz := hex.EncodedLen(len(val))
+			di.w.Grow(sz)
+			dst := di.w.Bytes()[di.w.Len() : di.w.Len()+sz]
+			hex.Encode(dst, val)
+			di.w.Write(dst)
+		}
+		di.w.WriteByte('\'')
+		return nil
+
+	case ByteStringBase32Encoding:
+		di.w.WriteString("b32'")
+		sz := rawBase32Encoding.EncodedLen(len(val))
+		di.w.Grow(sz)
+		dst := di.w.Bytes()[di.w.Len() : di.w.Len()+sz]
+		rawBase32Encoding.Encode(dst, val)
+		di.w.Write(dst)
+		di.w.WriteByte('\'')
+		return nil
+
+	case ByteStringBase32HexEncoding:
+		di.w.WriteString("h32'")
+		sz := rawBase32HexEncoding.EncodedLen(len(val))
+		di.w.Grow(sz)
+		dst := di.w.Bytes()[di.w.Len() : di.w.Len()+sz]
+		rawBase32HexEncoding.Encode(dst, val)
+		di.w.Write(dst)
+		di.w.WriteByte('\'')
+		return nil
+
+	case ByteStringBase64Encoding:
+		di.w.WriteString("b64'")
+		sz := base64.RawURLEncoding.EncodedLen(len(val))
+		di.w.Grow(sz)
+		dst := di.w.Bytes()[di.w.Len() : di.w.Len()+sz]
+		base64.RawURLEncoding.Encode(dst, val)
+		di.w.Write(dst)
+		di.w.WriteByte('\'')
+		return nil
+
+	default:
+		// It should not be possible for users to construct a *diagMode with an invalid byte
+		// string encoding.
+		panic(fmt.Sprintf("diagmode has invalid ByteStringEncoding %v", di.dm.byteStringEncoding))
+	}
+}
+
+const utf16SurrSelf = rune(0x10000)
+
+// quote should be either `'` or `"`
+func (di *diagnose) encodeTextString(val string, quote byte) error {
+	di.w.WriteByte(quote)
+
+	for i := 0; i < len(val); {
+		if b := val[i]; b < utf8.RuneSelf {
+			switch {
+			case b == '\t', b == '\n', b == '\r', b == '\\', b == quote:
+				di.w.WriteByte('\\')
+
+				switch b {
+				case '\t':
+					b = 't'
+				case '\n':
+					b = 'n'
+				case '\r':
+					b = 'r'
+				}
+				di.w.WriteByte(b)
+
+			case b >= ' ' && b <= '~':
+				di.w.WriteByte(b)
+
+			default:
+				di.writeU16(rune(b))
+			}
+
+			i++
+			continue
+		}
+
+		c, size := utf8.DecodeRuneInString(val[i:])
+		switch {
+		case c == utf8.RuneError:
+			return &SemanticError{"cbor: invalid UTF-8 string"}
+
+		case c < utf16SurrSelf:
+			di.writeU16(c)
+
+		default:
+			c1, c2 := utf16.EncodeRune(c)
+			di.writeU16(c1)
+			di.writeU16(c2)
+		}
+
+		i += size
+	}
+
+	di.w.WriteByte(quote)
+	return nil
+}
+
+func (di *diagnose) encodeFloat(ai byte, val uint64) error {
+	f64 := float64(0)
+	switch ai {
+	case additionalInformationAsFloat16:
+		f16 := float16.Frombits(uint16(val))
+		switch {
+		case f16.IsNaN():
+			di.w.WriteString("NaN")
+			return nil
+		case f16.IsInf(1):
+			di.w.WriteString("Infinity")
+			return nil
+		case f16.IsInf(-1):
+			di.w.WriteString("-Infinity")
+			return nil
+		default:
+			f64 = float64(f16.Float32())
+		}
+
+	case additionalInformationAsFloat32:
+		f32 := math.Float32frombits(uint32(val))
+		switch {
+		case f32 != f32:
+			di.w.WriteString("NaN")
+			return nil
+		case f32 > math.MaxFloat32:
+			di.w.WriteString("Infinity")
+			return nil
+		case f32 < -math.MaxFloat32:
+			di.w.WriteString("-Infinity")
+			return nil
+		default:
+			f64 = float64(f32)
+		}
+
+	case additionalInformationAsFloat64:
+		f64 = math.Float64frombits(val)
+		switch {
+		case f64 != f64:
+			di.w.WriteString("NaN")
+			return nil
+		case f64 > math.MaxFloat64:
+			di.w.WriteString("Infinity")
+			return nil
+		case f64 < -math.MaxFloat64:
+			di.w.WriteString("-Infinity")
+			return nil
+		}
+	}
+	// Use ES6 number to string conversion which should match most JSON generators.
+	// Inspired by https://github.com/golang/go/blob/4df10fba1687a6d4f51d7238a403f8f2298f6a16/src/encoding/json/encode.go#L585
+	const bitSize = 64
+	b := make([]byte, 0, 32)
+	if abs := math.Abs(f64); abs != 0 && (abs < 1e-6 || abs >= 1e21) {
+		b = strconv.AppendFloat(b, f64, 'e', -1, bitSize)
+		// clean up e-09 to e-9
+		n := len(b)
+		if n >= 4 && string(b[n-4:n-1]) == "e-0" {
+			b = append(b[:n-2], b[n-1])
+		}
+	} else {
+		b = strconv.AppendFloat(b, f64, 'f', -1, bitSize)
+	}
+
+	// add decimal point and trailing zero if needed
+	if bytes.IndexByte(b, '.') < 0 {
+		if i := bytes.IndexByte(b, 'e'); i < 0 {
+			b = append(b, '.', '0')
+		} else {
+			b = append(b[:i+2], b[i:]...)
+			b[i] = '.'
+			b[i+1] = '0'
+		}
+	}
+
+	di.w.WriteString(string(b))
+
+	if di.dm.floatPrecisionIndicator {
+		switch ai {
+		case additionalInformationAsFloat16:
+			di.w.WriteString("_1")
+			return nil
+
+		case additionalInformationAsFloat32:
+			di.w.WriteString("_2")
+			return nil
+
+		case additionalInformationAsFloat64:
+			di.w.WriteString("_3")
+			return nil
+		}
+	}
+
+	return nil
+}