[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go
new file mode 100644
index 0000000..f7fea7d
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/internal/encoding/json/decode_string.go
@@ -0,0 +1,91 @@
+// 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 json
+
+import (
+ "strconv"
+ "unicode"
+ "unicode/utf16"
+ "unicode/utf8"
+
+ "google.golang.org/protobuf/internal/strs"
+)
+
+func (d *Decoder) parseString(in []byte) (string, int, error) {
+ in0 := in
+ if len(in) == 0 {
+ return "", 0, ErrUnexpectedEOF
+ }
+ if in[0] != '"' {
+ return "", 0, d.newSyntaxError(d.currPos(), "invalid character %q at start of string", in[0])
+ }
+ in = in[1:]
+ i := indexNeedEscapeInBytes(in)
+ in, out := in[i:], in[:i:i] // set cap to prevent mutations
+ for len(in) > 0 {
+ switch r, n := utf8.DecodeRune(in); {
+ case r == utf8.RuneError && n == 1:
+ return "", 0, d.newSyntaxError(d.currPos(), "invalid UTF-8 in string")
+ case r < ' ':
+ return "", 0, d.newSyntaxError(d.currPos(), "invalid character %q in string", r)
+ case r == '"':
+ in = in[1:]
+ n := len(in0) - len(in)
+ return string(out), n, nil
+ case r == '\\':
+ if len(in) < 2 {
+ return "", 0, ErrUnexpectedEOF
+ }
+ switch r := in[1]; r {
+ case '"', '\\', '/':
+ in, out = in[2:], append(out, r)
+ case 'b':
+ in, out = in[2:], append(out, '\b')
+ case 'f':
+ in, out = in[2:], append(out, '\f')
+ case 'n':
+ in, out = in[2:], append(out, '\n')
+ case 'r':
+ in, out = in[2:], append(out, '\r')
+ case 't':
+ in, out = in[2:], append(out, '\t')
+ case 'u':
+ if len(in) < 6 {
+ return "", 0, ErrUnexpectedEOF
+ }
+ v, err := strconv.ParseUint(string(in[2:6]), 16, 16)
+ if err != nil {
+ return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:6])
+ }
+ in = in[6:]
+
+ r := rune(v)
+ if utf16.IsSurrogate(r) {
+ if len(in) < 6 {
+ return "", 0, ErrUnexpectedEOF
+ }
+ v, err := strconv.ParseUint(string(in[2:6]), 16, 16)
+ r = utf16.DecodeRune(r, rune(v))
+ if in[0] != '\\' || in[1] != 'u' ||
+ r == unicode.ReplacementChar || err != nil {
+ return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:6])
+ }
+ in = in[6:]
+ }
+ out = append(out, string(r)...)
+ default:
+ return "", 0, d.newSyntaxError(d.currPos(), "invalid escape code %q in string", in[:2])
+ }
+ default:
+ i := indexNeedEscapeInBytes(in[n:])
+ in, out = in[n+i:], append(out, in[:n+i]...)
+ }
+ }
+ return "", 0, ErrUnexpectedEOF
+}
+
+// indexNeedEscapeInBytes returns the index of the character that needs
+// escaping. If no characters need escaping, this returns the input length.
+func indexNeedEscapeInBytes(b []byte) int { return indexNeedEscapeInString(strs.UnsafeString(b)) }