[VOL-4291] OfAgent changes for gRPC migration
Change-Id: I8da1db6df49d478ef24ec8f9bd719e9692f48a7f
diff --git a/vendor/google.golang.org/protobuf/internal/encoding/text/encode.go b/vendor/google.golang.org/protobuf/internal/encoding/text/encode.go
new file mode 100644
index 0000000..da289cc
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/encoding/text/encode.go
@@ -0,0 +1,270 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package text
+
+import (
+ "math"
+ "math/bits"
+ "strconv"
+ "strings"
+ "unicode/utf8"
+
+ "google.golang.org/protobuf/internal/detrand"
+ "google.golang.org/protobuf/internal/errors"
+)
+
+// encType represents an encoding type.
+type encType uint8
+
+const (
+ _ encType = (1 << iota) / 2
+ name
+ scalar
+ messageOpen
+ messageClose
+)
+
+// Encoder provides methods to write out textproto constructs and values. The user is
+// responsible for producing valid sequences of constructs and values.
+type Encoder struct {
+ encoderState
+
+ indent string
+ delims [2]byte
+ outputASCII bool
+}
+
+type encoderState struct {
+ lastType encType
+ indents []byte
+ out []byte
+}
+
+// NewEncoder returns an Encoder.
+//
+// If indent is a non-empty string, it causes every entry in a List or Message
+// to be preceded by the indent and trailed by a newline.
+//
+// If delims is not the zero value, it controls the delimiter characters used
+// for messages (e.g., "{}" vs "<>").
+//
+// If outputASCII is true, strings will be serialized in such a way that
+// multi-byte UTF-8 sequences are escaped. This property ensures that the
+// overall output is ASCII (as opposed to UTF-8).
+func NewEncoder(indent string, delims [2]byte, outputASCII bool) (*Encoder, error) {
+ e := &Encoder{}
+ if len(indent) > 0 {
+ if strings.Trim(indent, " \t") != "" {
+ return nil, errors.New("indent may only be composed of space and tab characters")
+ }
+ e.indent = indent
+ }
+ switch delims {
+ case [2]byte{0, 0}:
+ e.delims = [2]byte{'{', '}'}
+ case [2]byte{'{', '}'}, [2]byte{'<', '>'}:
+ e.delims = delims
+ default:
+ return nil, errors.New("delimiters may only be \"{}\" or \"<>\"")
+ }
+ e.outputASCII = outputASCII
+
+ return e, nil
+}
+
+// Bytes returns the content of the written bytes.
+func (e *Encoder) Bytes() []byte {
+ return e.out
+}
+
+// StartMessage writes out the '{' or '<' symbol.
+func (e *Encoder) StartMessage() {
+ e.prepareNext(messageOpen)
+ e.out = append(e.out, e.delims[0])
+}
+
+// EndMessage writes out the '}' or '>' symbol.
+func (e *Encoder) EndMessage() {
+ e.prepareNext(messageClose)
+ e.out = append(e.out, e.delims[1])
+}
+
+// WriteName writes out the field name and the separator ':'.
+func (e *Encoder) WriteName(s string) {
+ e.prepareNext(name)
+ e.out = append(e.out, s...)
+ e.out = append(e.out, ':')
+}
+
+// WriteBool writes out the given boolean value.
+func (e *Encoder) WriteBool(b bool) {
+ if b {
+ e.WriteLiteral("true")
+ } else {
+ e.WriteLiteral("false")
+ }
+}
+
+// WriteString writes out the given string value.
+func (e *Encoder) WriteString(s string) {
+ e.prepareNext(scalar)
+ e.out = appendString(e.out, s, e.outputASCII)
+}
+
+func appendString(out []byte, in string, outputASCII bool) []byte {
+ out = append(out, '"')
+ i := indexNeedEscapeInString(in)
+ in, out = in[i:], append(out, in[:i]...)
+ for len(in) > 0 {
+ switch r, n := utf8.DecodeRuneInString(in); {
+ case r == utf8.RuneError && n == 1:
+ // We do not report invalid UTF-8 because strings in the text format
+ // are used to represent both the proto string and bytes type.
+ r = rune(in[0])
+ fallthrough
+ case r < ' ' || r == '"' || r == '\\' || r == 0x7f:
+ out = append(out, '\\')
+ switch r {
+ case '"', '\\':
+ out = append(out, byte(r))
+ case '\n':
+ out = append(out, 'n')
+ case '\r':
+ out = append(out, 'r')
+ case '\t':
+ out = append(out, 't')
+ default:
+ out = append(out, 'x')
+ out = append(out, "00"[1+(bits.Len32(uint32(r))-1)/4:]...)
+ out = strconv.AppendUint(out, uint64(r), 16)
+ }
+ in = in[n:]
+ case r >= utf8.RuneSelf && (outputASCII || r <= 0x009f):
+ out = append(out, '\\')
+ if r <= math.MaxUint16 {
+ out = append(out, 'u')
+ out = append(out, "0000"[1+(bits.Len32(uint32(r))-1)/4:]...)
+ out = strconv.AppendUint(out, uint64(r), 16)
+ } else {
+ out = append(out, 'U')
+ out = append(out, "00000000"[1+(bits.Len32(uint32(r))-1)/4:]...)
+ out = strconv.AppendUint(out, uint64(r), 16)
+ }
+ in = in[n:]
+ default:
+ i := indexNeedEscapeInString(in[n:])
+ in, out = in[n+i:], append(out, in[:n+i]...)
+ }
+ }
+ out = append(out, '"')
+ return out
+}
+
+// indexNeedEscapeInString returns the index of the character that needs
+// escaping. If no characters need escaping, this returns the input length.
+func indexNeedEscapeInString(s string) int {
+ for i := 0; i < len(s); i++ {
+ if c := s[i]; c < ' ' || c == '"' || c == '\'' || c == '\\' || c >= 0x7f {
+ return i
+ }
+ }
+ return len(s)
+}
+
+// WriteFloat writes out the given float value for given bitSize.
+func (e *Encoder) WriteFloat(n float64, bitSize int) {
+ e.prepareNext(scalar)
+ e.out = appendFloat(e.out, n, bitSize)
+}
+
+func appendFloat(out []byte, n float64, bitSize int) []byte {
+ switch {
+ case math.IsNaN(n):
+ return append(out, "nan"...)
+ case math.IsInf(n, +1):
+ return append(out, "inf"...)
+ case math.IsInf(n, -1):
+ return append(out, "-inf"...)
+ default:
+ return strconv.AppendFloat(out, n, 'g', -1, bitSize)
+ }
+}
+
+// WriteInt writes out the given signed integer value.
+func (e *Encoder) WriteInt(n int64) {
+ e.prepareNext(scalar)
+ e.out = append(e.out, strconv.FormatInt(n, 10)...)
+}
+
+// WriteUint writes out the given unsigned integer value.
+func (e *Encoder) WriteUint(n uint64) {
+ e.prepareNext(scalar)
+ e.out = append(e.out, strconv.FormatUint(n, 10)...)
+}
+
+// WriteLiteral writes out the given string as a literal value without quotes.
+// This is used for writing enum literal strings.
+func (e *Encoder) WriteLiteral(s string) {
+ e.prepareNext(scalar)
+ e.out = append(e.out, s...)
+}
+
+// prepareNext adds possible space and indentation for the next value based
+// on last encType and indent option. It also updates e.lastType to next.
+func (e *Encoder) prepareNext(next encType) {
+ defer func() {
+ e.lastType = next
+ }()
+
+ // Single line.
+ if len(e.indent) == 0 {
+ // Add space after each field before the next one.
+ if e.lastType&(scalar|messageClose) != 0 && next == name {
+ e.out = append(e.out, ' ')
+ // Add a random extra space to make output unstable.
+ if detrand.Bool() {
+ e.out = append(e.out, ' ')
+ }
+ }
+ return
+ }
+
+ // Multi-line.
+ switch {
+ case e.lastType == name:
+ e.out = append(e.out, ' ')
+ // Add a random extra space after name: to make output unstable.
+ if detrand.Bool() {
+ e.out = append(e.out, ' ')
+ }
+
+ case e.lastType == messageOpen && next != messageClose:
+ e.indents = append(e.indents, e.indent...)
+ e.out = append(e.out, '\n')
+ e.out = append(e.out, e.indents...)
+
+ case e.lastType&(scalar|messageClose) != 0:
+ if next == messageClose {
+ e.indents = e.indents[:len(e.indents)-len(e.indent)]
+ }
+ e.out = append(e.out, '\n')
+ e.out = append(e.out, e.indents...)
+ }
+}
+
+// Snapshot returns the current snapshot for use in Reset.
+func (e *Encoder) Snapshot() encoderState {
+ return e.encoderState
+}
+
+// Reset resets the Encoder to the given encoderState from a Snapshot.
+func (e *Encoder) Reset(es encoderState) {
+ e.encoderState = es
+}
+
+// AppendString appends the escaped form of the input string to b.
+func AppendString(b []byte, s string) []byte {
+ return appendString(b, s, false)
+}