First Commit of Voltha-Go-Controller from Radisys
Change-Id: I8e2e908e7ab09a4fe3d86849da18b6d69dcf4ab0
diff --git a/vendor/google.golang.org/protobuf/internal/strs/strings.go b/vendor/google.golang.org/protobuf/internal/strs/strings.go
new file mode 100644
index 0000000..0b74e76
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/strs/strings.go
@@ -0,0 +1,196 @@
+// Copyright 2019 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 strs provides string manipulation functionality specific to protobuf.
+package strs
+
+import (
+ "go/token"
+ "strings"
+ "unicode"
+ "unicode/utf8"
+
+ "google.golang.org/protobuf/internal/flags"
+ "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+// EnforceUTF8 reports whether to enforce strict UTF-8 validation.
+func EnforceUTF8(fd protoreflect.FieldDescriptor) bool {
+ if flags.ProtoLegacy {
+ if fd, ok := fd.(interface{ EnforceUTF8() bool }); ok {
+ return fd.EnforceUTF8()
+ }
+ }
+ return fd.Syntax() == protoreflect.Proto3
+}
+
+// GoCamelCase camel-cases a protobuf name for use as a Go identifier.
+//
+// If there is an interior underscore followed by a lower case letter,
+// drop the underscore and convert the letter to upper case.
+func GoCamelCase(s string) string {
+ // Invariant: if the next letter is lower case, it must be converted
+ // to upper case.
+ // That is, we process a word at a time, where words are marked by _ or
+ // upper case letter. Digits are treated as words.
+ var b []byte
+ for i := 0; i < len(s); i++ {
+ c := s[i]
+ switch {
+ case c == '.' && i+1 < len(s) && isASCIILower(s[i+1]):
+ // Skip over '.' in ".{{lowercase}}".
+ case c == '.':
+ b = append(b, '_') // convert '.' to '_'
+ case c == '_' && (i == 0 || s[i-1] == '.'):
+ // Convert initial '_' to ensure we start with a capital letter.
+ // Do the same for '_' after '.' to match historic behavior.
+ b = append(b, 'X') // convert '_' to 'X'
+ case c == '_' && i+1 < len(s) && isASCIILower(s[i+1]):
+ // Skip over '_' in "_{{lowercase}}".
+ case isASCIIDigit(c):
+ b = append(b, c)
+ default:
+ // Assume we have a letter now - if not, it's a bogus identifier.
+ // The next word is a sequence of characters that must start upper case.
+ if isASCIILower(c) {
+ c -= 'a' - 'A' // convert lowercase to uppercase
+ }
+ b = append(b, c)
+
+ // Accept lower case sequence that follows.
+ for ; i+1 < len(s) && isASCIILower(s[i+1]); i++ {
+ b = append(b, s[i+1])
+ }
+ }
+ }
+ return string(b)
+}
+
+// GoSanitized converts a string to a valid Go identifier.
+func GoSanitized(s string) string {
+ // Sanitize the input to the set of valid characters,
+ // which must be '_' or be in the Unicode L or N categories.
+ s = strings.Map(func(r rune) rune {
+ if unicode.IsLetter(r) || unicode.IsDigit(r) {
+ return r
+ }
+ return '_'
+ }, s)
+
+ // Prepend '_' in the event of a Go keyword conflict or if
+ // the identifier is invalid (does not start in the Unicode L category).
+ r, _ := utf8.DecodeRuneInString(s)
+ if token.Lookup(s).IsKeyword() || !unicode.IsLetter(r) {
+ return "_" + s
+ }
+ return s
+}
+
+// JSONCamelCase converts a snake_case identifier to a camelCase identifier,
+// according to the protobuf JSON specification.
+func JSONCamelCase(s string) string {
+ var b []byte
+ var wasUnderscore bool
+ for i := 0; i < len(s); i++ { // proto identifiers are always ASCII
+ c := s[i]
+ if c != '_' {
+ if wasUnderscore && isASCIILower(c) {
+ c -= 'a' - 'A' // convert to uppercase
+ }
+ b = append(b, c)
+ }
+ wasUnderscore = c == '_'
+ }
+ return string(b)
+}
+
+// JSONSnakeCase converts a camelCase identifier to a snake_case identifier,
+// according to the protobuf JSON specification.
+func JSONSnakeCase(s string) string {
+ var b []byte
+ for i := 0; i < len(s); i++ { // proto identifiers are always ASCII
+ c := s[i]
+ if isASCIIUpper(c) {
+ b = append(b, '_')
+ c += 'a' - 'A' // convert to lowercase
+ }
+ b = append(b, c)
+ }
+ return string(b)
+}
+
+// MapEntryName derives the name of the map entry message given the field name.
+// See protoc v3.8.0: src/google/protobuf/descriptor.cc:254-276,6057
+func MapEntryName(s string) string {
+ var b []byte
+ upperNext := true
+ for _, c := range s {
+ switch {
+ case c == '_':
+ upperNext = true
+ case upperNext:
+ b = append(b, byte(unicode.ToUpper(c)))
+ upperNext = false
+ default:
+ b = append(b, byte(c))
+ }
+ }
+ b = append(b, "Entry"...)
+ return string(b)
+}
+
+// EnumValueName derives the camel-cased enum value name.
+// See protoc v3.8.0: src/google/protobuf/descriptor.cc:297-313
+func EnumValueName(s string) string {
+ var b []byte
+ upperNext := true
+ for _, c := range s {
+ switch {
+ case c == '_':
+ upperNext = true
+ case upperNext:
+ b = append(b, byte(unicode.ToUpper(c)))
+ upperNext = false
+ default:
+ b = append(b, byte(unicode.ToLower(c)))
+ upperNext = false
+ }
+ }
+ return string(b)
+}
+
+// TrimEnumPrefix trims the enum name prefix from an enum value name,
+// where the prefix is all lowercase without underscores.
+// See protoc v3.8.0: src/google/protobuf/descriptor.cc:330-375
+func TrimEnumPrefix(s, prefix string) string {
+ s0 := s // original input
+ for len(s) > 0 && len(prefix) > 0 {
+ if s[0] == '_' {
+ s = s[1:]
+ continue
+ }
+ if unicode.ToLower(rune(s[0])) != rune(prefix[0]) {
+ return s0 // no prefix match
+ }
+ s, prefix = s[1:], prefix[1:]
+ }
+ if len(prefix) > 0 {
+ return s0 // no prefix match
+ }
+ s = strings.TrimLeft(s, "_")
+ if len(s) == 0 {
+ return s0 // avoid returning empty string
+ }
+ return s
+}
+
+func isASCIILower(c byte) bool {
+ return 'a' <= c && c <= 'z'
+}
+func isASCIIUpper(c byte) bool {
+ return 'A' <= c && c <= 'Z'
+}
+func isASCIIDigit(c byte) bool {
+ return '0' <= c && c <= '9'
+}
diff --git a/vendor/google.golang.org/protobuf/internal/strs/strings_pure.go b/vendor/google.golang.org/protobuf/internal/strs/strings_pure.go
new file mode 100644
index 0000000..85e074c
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/strs/strings_pure.go
@@ -0,0 +1,27 @@
+// 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.
+
+// +build purego appengine
+
+package strs
+
+import pref "google.golang.org/protobuf/reflect/protoreflect"
+
+func UnsafeString(b []byte) string {
+ return string(b)
+}
+
+func UnsafeBytes(s string) []byte {
+ return []byte(s)
+}
+
+type Builder struct{}
+
+func (*Builder) AppendFullName(prefix pref.FullName, name pref.Name) pref.FullName {
+ return prefix.Append(name)
+}
+
+func (*Builder) MakeString(b []byte) string {
+ return string(b)
+}
diff --git a/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go b/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go
new file mode 100644
index 0000000..2160c70
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go
@@ -0,0 +1,94 @@
+// 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.
+
+// +build !purego,!appengine
+
+package strs
+
+import (
+ "unsafe"
+
+ pref "google.golang.org/protobuf/reflect/protoreflect"
+)
+
+type (
+ stringHeader struct {
+ Data unsafe.Pointer
+ Len int
+ }
+ sliceHeader struct {
+ Data unsafe.Pointer
+ Len int
+ Cap int
+ }
+)
+
+// UnsafeString returns an unsafe string reference of b.
+// The caller must treat the input slice as immutable.
+//
+// WARNING: Use carefully. The returned result must not leak to the end user
+// unless the input slice is provably immutable.
+func UnsafeString(b []byte) (s string) {
+ src := (*sliceHeader)(unsafe.Pointer(&b))
+ dst := (*stringHeader)(unsafe.Pointer(&s))
+ dst.Data = src.Data
+ dst.Len = src.Len
+ return s
+}
+
+// UnsafeBytes returns an unsafe bytes slice reference of s.
+// The caller must treat returned slice as immutable.
+//
+// WARNING: Use carefully. The returned result must not leak to the end user.
+func UnsafeBytes(s string) (b []byte) {
+ src := (*stringHeader)(unsafe.Pointer(&s))
+ dst := (*sliceHeader)(unsafe.Pointer(&b))
+ dst.Data = src.Data
+ dst.Len = src.Len
+ dst.Cap = src.Len
+ return b
+}
+
+// Builder builds a set of strings with shared lifetime.
+// This differs from strings.Builder, which is for building a single string.
+type Builder struct {
+ buf []byte
+}
+
+// AppendFullName is equivalent to protoreflect.FullName.Append,
+// but optimized for large batches where each name has a shared lifetime.
+func (sb *Builder) AppendFullName(prefix pref.FullName, name pref.Name) pref.FullName {
+ n := len(prefix) + len(".") + len(name)
+ if len(prefix) == 0 {
+ n -= len(".")
+ }
+ sb.grow(n)
+ sb.buf = append(sb.buf, prefix...)
+ sb.buf = append(sb.buf, '.')
+ sb.buf = append(sb.buf, name...)
+ return pref.FullName(sb.last(n))
+}
+
+// MakeString is equivalent to string(b), but optimized for large batches
+// with a shared lifetime.
+func (sb *Builder) MakeString(b []byte) string {
+ sb.grow(len(b))
+ sb.buf = append(sb.buf, b...)
+ return sb.last(len(b))
+}
+
+func (sb *Builder) grow(n int) {
+ if cap(sb.buf)-len(sb.buf) >= n {
+ return
+ }
+
+ // Unlike strings.Builder, we do not need to copy over the contents
+ // of the old buffer since our builder provides no API for
+ // retrieving previously created strings.
+ sb.buf = make([]byte, 2*(cap(sb.buf)+n))
+}
+
+func (sb *Builder) last(n int) string {
+ return UnsafeString(sb.buf[len(sb.buf)-n:])
+}