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rebase: update kubernetes to v1.23.0

Browse Source 
updating go dependency to latest kubernetes
released version i.e v1.23.0

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
2021-12-08 19:20:47 +05:30
committed by mergify[bot]
parent 42403e2ba7
commit 5762da3e91
789 changed files with 49781 additions and 11501 deletions
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# Contributing Guidelines
Welcome to Kubernetes. We are excited about the prospect of you joining our [community](https://git.k8s.io/community)! The Kubernetes community abides by the CNCF [code of conduct](code-of-conduct.md). Here is an excerpt:
_As contributors and maintainers of this project, and in the interest of fostering an open and welcoming community, we pledge to respect all people who contribute through reporting issues, posting feature requests, updating documentation, submitting pull requests or patches, and other activities._
## Criteria for adding code here
This library adapts the stdlib `encoding/json` decoder to be compatible with
Kubernetes JSON decoding, and is not expected to actively add new features.
It may be updated with changes from the stdlib `encoding/json` decoder.
Any code that is added must:
* Have full unit test and benchmark coverage
* Be backward compatible with the existing exposed go API
* Have zero external dependencies
* Preserve existing benchmark performance
* Preserve compatibility with existing decoding behavior of `UnmarshalCaseSensitivePreserveInts()` or `UnmarshalStrict()`
* Avoid use of `unsafe`
## Getting Started
We have full documentation on how to get started contributing here:
<!---
If your repo has certain guidelines for contribution, put them here ahead of the general k8s resources
-->
- [Contributor License Agreement](https://git.k8s.io/community/CLA.md) Kubernetes projects require that you sign a Contributor License Agreement (CLA) before we can accept your pull requests
- [Kubernetes Contributor Guide](https://git.k8s.io/community/contributors/guide) - Main contributor documentation, or you can just jump directly to the [contributing section](https://git.k8s.io/community/contributors/guide#contributing)
- [Contributor Cheat Sheet](https://git.k8s.io/community/contributors/guide/contributor-cheatsheet) - Common resources for existing developers
## Community, discussion, contribution, and support
You can reach the maintainers of this project via the
[sig-api-machinery mailing list / channels](https://github.com/kubernetes/community/tree/master/sig-api-machinery#contact).
## Mentorship
- [Mentoring Initiatives](https://git.k8s.io/community/mentoring) - We have a diverse set of mentorship programs available that are always looking for volunteers!

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Files other than internal/golang/* licensed under:
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------------------
internal/golang/* files licensed under:
Copyright (c) 2009 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
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copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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.PHONY: default build test benchmark fmt vet
default: build
build:
go build ./...
test:
go test sigs.k8s.io/json/...
benchmark:
go test sigs.k8s.io/json -bench . -benchmem
fmt:
go mod tidy
gofmt -s -w *.go
vet:
go vet sigs.k8s.io/json
@echo "checking for external dependencies"
@deps=$$(go mod graph); \
if [ -n "$${deps}" ]; then \
echo "only stdlib dependencies allowed, found:"; \
echo "$${deps}"; \
exit 1; \
fi
@echo "checking for unsafe use"
@unsafe=$$(go list -f '{{.ImportPath}} depends on {{.Imports}}' sigs.k8s.io/json/... | grep unsafe || true); \
if [ -n "$${unsafe}" ]; then \
echo "no dependencies on unsafe allowed, found:"; \
echo "$${unsafe}"; \
exit 1; \
fi

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# See the OWNERS docs at https://go.k8s.io/owners
approvers:
- deads2k
- lavalamp
- liggitt

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# sigs.k8s.io/json
[![Go Reference](https://pkg.go.dev/badge/sigs.k8s.io/json.svg)](https://pkg.go.dev/sigs.k8s.io/json)
## Introduction
This library is a subproject of [sig-api-machinery](https://github.com/kubernetes/community/tree/master/sig-api-machinery#json).
It provides case-sensitive, integer-preserving JSON unmarshaling functions based on `encoding/json` `Unmarshal()`.
## Compatibility
The `UnmarshalCaseSensitivePreserveInts()` function behaves like `encoding/json#Unmarshal()` with the following differences:
- JSON object keys are treated case-sensitively.
Object keys must exactly match json tag names (for tagged struct fields)
or struct field names (for untagged struct fields).
- JSON integers are unmarshaled into `interface{}` fields as an `int64` instead of a
`float64` when possible, falling back to `float64` on any parse or overflow error.
- Syntax errors do not return an `encoding/json` `*SyntaxError` error.
Instead, they return an error which can be passed to `SyntaxErrorOffset()` to obtain an offset.
## Additional capabilities
The `UnmarshalStrict()` function decodes identically to `UnmarshalCaseSensitivePreserveInts()`,
and also returns non-fatal strict errors encountered while decoding:
- Duplicate fields encountered
- Unknown fields encountered
### Community, discussion, contribution, and support
You can reach the maintainers of this project via the
[sig-api-machinery mailing list / channels](https://github.com/kubernetes/community/tree/master/sig-api-machinery#contact).
### Code of conduct
Participation in the Kubernetes community is governed by the [Kubernetes Code of Conduct](code-of-conduct.md).
[owners]: https://git.k8s.io/community/contributors/guide/owners.md
[Creative Commons 4.0]: https://git.k8s.io/website/LICENSE

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# Security Policy
## Security Announcements
Join the [kubernetes-security-announce] group for security and vulnerability announcements.
You can also subscribe to an RSS feed of the above using [this link][kubernetes-security-announce-rss].
## Reporting a Vulnerability
Instructions for reporting a vulnerability can be found on the
[Kubernetes Security and Disclosure Information] page.
## Supported Versions
Information about supported Kubernetes versions can be found on the
[Kubernetes version and version skew support policy] page on the Kubernetes website.
[kubernetes-security-announce]: https://groups.google.com/forum/#!forum/kubernetes-security-announce
[kubernetes-security-announce-rss]: https://groups.google.com/forum/feed/kubernetes-security-announce/msgs/rss_v2_0.xml?num=50
[Kubernetes version and version skew support policy]: https://kubernetes.io/docs/setup/release/version-skew-policy/#supported-versions
[Kubernetes Security and Disclosure Information]: https://kubernetes.io/docs/reference/issues-security/security/#report-a-vulnerability

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# Defined below are the security contacts for this repo.
#
# They are the contact point for the Product Security Committee to reach out
# to for triaging and handling of incoming issues.
#
# The below names agree to abide by the
# [Embargo Policy](https://git.k8s.io/security/private-distributors-list.md#embargo-policy)
# and will be removed and replaced if they violate that agreement.
#
# DO NOT REPORT SECURITY VULNERABILITIES DIRECTLY TO THESE NAMES, FOLLOW THE
# INSTRUCTIONS AT https://kubernetes.io/security/
deads2k
lavalamp
liggitt

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# Kubernetes Community Code of Conduct
Please refer to our [Kubernetes Community Code of Conduct](https://git.k8s.io/community/code-of-conduct.md)

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/*
Copyright 2021 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package json // import "sigs.k8s.io/json"

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module sigs.k8s.io/json
go 1.16

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// Copyright 2013 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 (
"bytes"
"unicode/utf8"
)
const (
caseMask = ^byte(0x20) // Mask to ignore case in ASCII.
kelvin = '\u212a'
smallLongEss = '\u017f'
)
// foldFunc returns one of four different case folding equivalence
// functions, from most general (and slow) to fastest:
//
// 1) bytes.EqualFold, if the key s contains any non-ASCII UTF-8
// 2) equalFoldRight, if s contains special folding ASCII ('k', 'K', 's', 'S')
// 3) asciiEqualFold, no special, but includes non-letters (including _)
// 4) simpleLetterEqualFold, no specials, no non-letters.
//
// The letters S and K are special because they map to 3 runes, not just 2:
// * S maps to s and to U+017F 'ſ' Latin small letter long s
// * k maps to K and to U+212A 'K' Kelvin sign
// See https://play.golang.org/p/tTxjOc0OGo
//
// The returned function is specialized for matching against s and
// should only be given s. It's not curried for performance reasons.
func foldFunc(s []byte) func(s, t []byte) bool {
nonLetter := false
special := false // special letter
for _, b := range s {
if b >= utf8.RuneSelf {
return bytes.EqualFold
}
upper := b & caseMask
if upper < 'A' || upper > 'Z' {
nonLetter = true
} else if upper == 'K' || upper == 'S' {
// See above for why these letters are special.
special = true
}
}
if special {
return equalFoldRight
}
if nonLetter {
return asciiEqualFold
}
return simpleLetterEqualFold
}
// equalFoldRight is a specialization of bytes.EqualFold when s is
// known to be all ASCII (including punctuation), but contains an 's',
// 'S', 'k', or 'K', requiring a Unicode fold on the bytes in t.
// See comments on foldFunc.
func equalFoldRight(s, t []byte) bool {
for _, sb := range s {
if len(t) == 0 {
return false
}
tb := t[0]
if tb < utf8.RuneSelf {
if sb != tb {
sbUpper := sb & caseMask
if 'A' <= sbUpper && sbUpper <= 'Z' {
if sbUpper != tb&caseMask {
return false
}
} else {
return false
}
}
t = t[1:]
continue
}
// sb is ASCII and t is not. t must be either kelvin
// sign or long s; sb must be s, S, k, or K.
tr, size := utf8.DecodeRune(t)
switch sb {
case 's', 'S':
if tr != smallLongEss {
return false
}
case 'k', 'K':
if tr != kelvin {
return false
}
default:
return false
}
t = t[size:]
}
if len(t) > 0 {
return false
}
return true
}
// asciiEqualFold is a specialization of bytes.EqualFold for use when
// s is all ASCII (but may contain non-letters) and contains no
// special-folding letters.
// See comments on foldFunc.
func asciiEqualFold(s, t []byte) bool {
if len(s) != len(t) {
return false
}
for i, sb := range s {
tb := t[i]
if sb == tb {
continue
}
if ('a' <= sb && sb <= 'z') || ('A' <= sb && sb <= 'Z') {
if sb&caseMask != tb&caseMask {
return false
}
} else {
return false
}
}
return true
}
// simpleLetterEqualFold is a specialization of bytes.EqualFold for
// use when s is all ASCII letters (no underscores, etc) and also
// doesn't contain 'k', 'K', 's', or 'S'.
// See comments on foldFunc.
func simpleLetterEqualFold(s, t []byte) bool {
if len(s) != len(t) {
return false
}
for i, b := range s {
if b&caseMask != t[i]&caseMask {
return false
}
}
return true
}

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// 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.
//go:build gofuzz
// +build gofuzz
package json
import (
"fmt"
)
func Fuzz(data []byte) (score int) {
for _, ctor := range []func() interface{}{
func() interface{} { return new(interface{}) },
func() interface{} { return new(map[string]interface{}) },
func() interface{} { return new([]interface{}) },
} {
v := ctor()
err := Unmarshal(data, v)
if err != nil {
continue
}
score = 1
m, err := Marshal(v)
if err != nil {
fmt.Printf("v=%#v\n", v)
panic(err)
}
u := ctor()
err = Unmarshal(m, u)
if err != nil {
fmt.Printf("v=%#v\n", v)
fmt.Printf("m=%s\n", m)
panic(err)
}
}
return
}

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// Copyright 2010 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 (
"bytes"
)
// Compact appends to dst the JSON-encoded src with
// insignificant space characters elided.
func Compact(dst *bytes.Buffer, src []byte) error {
return compact(dst, src, false)
}
func compact(dst *bytes.Buffer, src []byte, escape bool) error {
origLen := dst.Len()
scan := newScanner()
defer freeScanner(scan)
start := 0
for i, c := range src {
if escape && (c == '<' || c == '>' || c == '&') {
if start < i {
dst.Write(src[start:i])
}
dst.WriteString(`\u00`)
dst.WriteByte(hex[c>>4])
dst.WriteByte(hex[c&0xF])
start = i + 1
}
// Convert U+2028 and U+2029 (E2 80 A8 and E2 80 A9).
if escape && c == 0xE2 && i+2 < len(src) && src[i+1] == 0x80 && src[i+2]&^1 == 0xA8 {
if start < i {
dst.Write(src[start:i])
}
dst.WriteString(`\u202`)
dst.WriteByte(hex[src[i+2]&0xF])
start = i + 3
}
v := scan.step(scan, c)
if v >= scanSkipSpace {
if v == scanError {
break
}
if start < i {
dst.Write(src[start:i])
}
start = i + 1
}
}
if scan.eof() == scanError {
dst.Truncate(origLen)
return scan.err
}
if start < len(src) {
dst.Write(src[start:])
}
return nil
}
func newline(dst *bytes.Buffer, prefix, indent string, depth int) {
dst.WriteByte('\n')
dst.WriteString(prefix)
for i := 0; i < depth; i++ {
dst.WriteString(indent)
}
}
// Indent appends to dst an indented form of the JSON-encoded src.
// Each element in a JSON object or array begins on a new,
// indented line beginning with prefix followed by one or more
// copies of indent according to the indentation nesting.
// The data appended to dst does not begin with the prefix nor
// any indentation, to make it easier to embed inside other formatted JSON data.
// Although leading space characters (space, tab, carriage return, newline)
// at the beginning of src are dropped, trailing space characters
// at the end of src are preserved and copied to dst.
// For example, if src has no trailing spaces, neither will dst;
// if src ends in a trailing newline, so will dst.
func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
origLen := dst.Len()
scan := newScanner()
defer freeScanner(scan)
needIndent := false
depth := 0
for _, c := range src {
scan.bytes++
v := scan.step(scan, c)
if v == scanSkipSpace {
continue
}
if v == scanError {
break
}
if needIndent && v != scanEndObject && v != scanEndArray {
needIndent = false
depth++
newline(dst, prefix, indent, depth)
}
// Emit semantically uninteresting bytes
// (in particular, punctuation in strings) unmodified.
if v == scanContinue {
dst.WriteByte(c)
continue
}
// Add spacing around real punctuation.
switch c {
case '{', '[':
// delay indent so that empty object and array are formatted as {} and [].
needIndent = true
dst.WriteByte(c)
case ',':
dst.WriteByte(c)
newline(dst, prefix, indent, depth)
case ':':
dst.WriteByte(c)
dst.WriteByte(' ')
case '}', ']':
if needIndent {
// suppress indent in empty object/array
needIndent = false
} else {
depth--
newline(dst, prefix, indent, depth)
}
dst.WriteByte(c)
default:
dst.WriteByte(c)
}
}
if scan.eof() == scanError {
dst.Truncate(origLen)
return scan.err
}
return nil
}

109
vendor/sigs.k8s.io/json/internal/golang/encoding/json/kubernetes_patch.go generated vendored Normal file
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/*
Copyright 2021 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package json
import (
gojson "encoding/json"
"strings"
)
// Type-alias error and data types returned from decoding
type UnmarshalTypeError = gojson.UnmarshalTypeError
type UnmarshalFieldError = gojson.UnmarshalFieldError
type InvalidUnmarshalError = gojson.InvalidUnmarshalError
type Number = gojson.Number
type RawMessage = gojson.RawMessage
type Token = gojson.Token
type Delim = gojson.Delim
type UnmarshalOpt func(*decodeState)
func UseNumber(d *decodeState) {
d.useNumber = true
}
func DisallowUnknownFields(d *decodeState) {
d.disallowUnknownFields = true
}
// CaseSensitive requires json keys to exactly match specified json tags (for tagged struct fields)
// or struct field names (for untagged struct fields), or be treated as an unknown field.
func CaseSensitive(d *decodeState) {
d.caseSensitive = true
}
func (d *Decoder) CaseSensitive() {
d.d.caseSensitive = true
}
// PreserveInts decodes numbers as int64 when decoding to untyped fields,
// if the JSON data does not contain a "." character, parses as an integer successfully,
// and does not overflow int64. Otherwise, it falls back to default float64 decoding behavior.
//
// If UseNumber is also set, it takes precedence over PreserveInts.
func PreserveInts(d *decodeState) {
d.preserveInts = true
}
func (d *Decoder) PreserveInts() {
d.d.preserveInts = true
}
// DisallowDuplicateFields treats duplicate fields encountered while decoding as an error.
func DisallowDuplicateFields(d *decodeState) {
d.disallowDuplicateFields = true
}
func (d *Decoder) DisallowDuplicateFields() {
d.d.disallowDuplicateFields = true
}
// saveStrictError saves a strict decoding error,
// for reporting at the end of the unmarshal if no other errors occurred.
func (d *decodeState) saveStrictError(err error) {
// prevent excessive numbers of accumulated errors
if len(d.savedStrictErrors) >= 100 {
return
}
// dedupe accumulated strict errors
if d.seenStrictErrors == nil {
d.seenStrictErrors = map[string]struct{}{}
}
msg := err.Error()
if _, seen := d.seenStrictErrors[msg]; seen {
return
}
// accumulate the error
d.seenStrictErrors[msg] = struct{}{}
d.savedStrictErrors = append(d.savedStrictErrors, err)
}
// UnmarshalStrictError holds errors resulting from use of strict disallow___ decoder directives.
// If this is returned from Unmarshal(), it means the decoding was successful in all other respects.
type UnmarshalStrictError struct {
Errors []error
}
func (e *UnmarshalStrictError) Error() string {
var b strings.Builder
b.WriteString("json: ")
for i, err := range e.Errors {
if i > 0 {
b.WriteString(", ")
}
b.WriteString(err.Error())
}
return b.String()
}

608
vendor/sigs.k8s.io/json/internal/golang/encoding/json/scanner.go generated vendored Normal file
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// Copyright 2010 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
// JSON value parser state machine.
// Just about at the limit of what is reasonable to write by hand.
// Some parts are a bit tedious, but overall it nicely factors out the
// otherwise common code from the multiple scanning functions
// in this package (Compact, Indent, checkValid, etc).
//
// This file starts with two simple examples using the scanner
// before diving into the scanner itself.
import (
"strconv"
"sync"
)
// Valid reports whether data is a valid JSON encoding.
func Valid(data []byte) bool {
scan := newScanner()
defer freeScanner(scan)
return checkValid(data, scan) == nil
}
// checkValid verifies that data is valid JSON-encoded data.
// scan is passed in for use by checkValid to avoid an allocation.
func checkValid(data []byte, scan *scanner) error {
scan.reset()
for _, c := range data {
scan.bytes++
if scan.step(scan, c) == scanError {
return scan.err
}
}
if scan.eof() == scanError {
return scan.err
}
return nil
}
// A SyntaxError is a description of a JSON syntax error.
type SyntaxError struct {
msg string // description of error
Offset int64 // error occurred after reading Offset bytes
}
func (e *SyntaxError) Error() string { return e.msg }
// A scanner is a JSON scanning state machine.
// Callers call scan.reset and then pass bytes in one at a time
// by calling scan.step(&scan, c) for each byte.
// The return value, referred to as an opcode, tells the
// caller about significant parsing events like beginning
// and ending literals, objects, and arrays, so that the
// caller can follow along if it wishes.
// The return value scanEnd indicates that a single top-level
// JSON value has been completed, *before* the byte that
// just got passed in. (The indication must be delayed in order
// to recognize the end of numbers: is 123 a whole value or
// the beginning of 12345e+6?).
type scanner struct {
// The step is a func to be called to execute the next transition.
// Also tried using an integer constant and a single func
// with a switch, but using the func directly was 10% faster
// on a 64-bit Mac Mini, and it's nicer to read.
step func(*scanner, byte) int
// Reached end of top-level value.
endTop bool
// Stack of what we're in the middle of - array values, object keys, object values.
parseState []int
// Error that happened, if any.
err error
// total bytes consumed, updated by decoder.Decode (and deliberately
// not set to zero by scan.reset)
bytes int64
}
var scannerPool = sync.Pool{
New: func() interface{} {
return &scanner{}
},
}
func newScanner() *scanner {
scan := scannerPool.Get().(*scanner)
// scan.reset by design doesn't set bytes to zero
scan.bytes = 0
scan.reset()
return scan
}
func freeScanner(scan *scanner) {
// Avoid hanging on to too much memory in extreme cases.
if len(scan.parseState) > 1024 {
scan.parseState = nil
}
scannerPool.Put(scan)
}
// These values are returned by the state transition functions
// assigned to scanner.state and the method scanner.eof.
// They give details about the current state of the scan that
// callers might be interested to know about.
// It is okay to ignore the return value of any particular
// call to scanner.state: if one call returns scanError,
// every subsequent call will return scanError too.
const (
// Continue.
scanContinue = iota // uninteresting byte
scanBeginLiteral // end implied by next result != scanContinue
scanBeginObject // begin object
scanObjectKey // just finished object key (string)
scanObjectValue // just finished non-last object value
scanEndObject // end object (implies scanObjectValue if possible)
scanBeginArray // begin array
scanArrayValue // just finished array value
scanEndArray // end array (implies scanArrayValue if possible)
scanSkipSpace // space byte; can skip; known to be last "continue" result
// Stop.
scanEnd // top-level value ended *before* this byte; known to be first "stop" result
scanError // hit an error, scanner.err.
)
// These values are stored in the parseState stack.
// They give the current state of a composite value
// being scanned. If the parser is inside a nested value
// the parseState describes the nested state, outermost at entry 0.
const (
parseObjectKey = iota // parsing object key (before colon)
parseObjectValue // parsing object value (after colon)
parseArrayValue // parsing array value
)
// This limits the max nesting depth to prevent stack overflow.
// This is permitted by https://tools.ietf.org/html/rfc7159#section-9
const maxNestingDepth = 10000
// reset prepares the scanner for use.
// It must be called before calling s.step.
func (s *scanner) reset() {
s.step = stateBeginValue
s.parseState = s.parseState[0:0]
s.err = nil
s.endTop = false
}
// eof tells the scanner that the end of input has been reached.
// It returns a scan status just as s.step does.
func (s *scanner) eof() int {
if s.err != nil {
return scanError
}
if s.endTop {
return scanEnd
}
s.step(s, ' ')
if s.endTop {
return scanEnd
}
if s.err == nil {
s.err = &SyntaxError{"unexpected end of JSON input", s.bytes}
}
return scanError
}
// pushParseState pushes a new parse state p onto the parse stack.
// an error state is returned if maxNestingDepth was exceeded, otherwise successState is returned.
func (s *scanner) pushParseState(c byte, newParseState int, successState int) int {
s.parseState = append(s.parseState, newParseState)
if len(s.parseState) <= maxNestingDepth {
return successState
}
return s.error(c, "exceeded max depth")
}
// popParseState pops a parse state (already obtained) off the stack
// and updates s.step accordingly.
func (s *scanner) popParseState() {
n := len(s.parseState) - 1
s.parseState = s.parseState[0:n]
if n == 0 {
s.step = stateEndTop
s.endTop = true
} else {
s.step = stateEndValue
}
}
func isSpace(c byte) bool {
return c <= ' ' && (c == ' ' || c == '\t' || c == '\r' || c == '\n')
}
// stateBeginValueOrEmpty is the state after reading `[`.
func stateBeginValueOrEmpty(s *scanner, c byte) int {
if isSpace(c) {
return scanSkipSpace
}
if c == ']' {
return stateEndValue(s, c)
}
return stateBeginValue(s, c)
}
// stateBeginValue is the state at the beginning of the input.
func stateBeginValue(s *scanner, c byte) int {
if isSpace(c) {
return scanSkipSpace
}
switch c {
case '{':
s.step = stateBeginStringOrEmpty
return s.pushParseState(c, parseObjectKey, scanBeginObject)
case '[':
s.step = stateBeginValueOrEmpty
return s.pushParseState(c, parseArrayValue, scanBeginArray)
case '"':
s.step = stateInString
return scanBeginLiteral
case '-':
s.step = stateNeg
return scanBeginLiteral
case '0': // beginning of 0.123
s.step = state0
return scanBeginLiteral
case 't': // beginning of true
s.step = stateT
return scanBeginLiteral
case 'f': // beginning of false
s.step = stateF
return scanBeginLiteral
case 'n': // beginning of null
s.step = stateN
return scanBeginLiteral
}
if '1' <= c && c <= '9' { // beginning of 1234.5
s.step = state1
return scanBeginLiteral
}
return s.error(c, "looking for beginning of value")
}
// stateBeginStringOrEmpty is the state after reading `{`.
func stateBeginStringOrEmpty(s *scanner, c byte) int {
if isSpace(c) {
return scanSkipSpace
}
if c == '}' {
n := len(s.parseState)
s.parseState[n-1] = parseObjectValue
return stateEndValue(s, c)
}
return stateBeginString(s, c)
}
// stateBeginString is the state after reading `{"key": value,`.
func stateBeginString(s *scanner, c byte) int {
if isSpace(c) {
return scanSkipSpace
}
if c == '"' {
s.step = stateInString
return scanBeginLiteral
}
return s.error(c, "looking for beginning of object key string")
}
// stateEndValue is the state after completing a value,
// such as after reading `{}` or `true` or `["x"`.
func stateEndValue(s *scanner, c byte) int {
n := len(s.parseState)
if n == 0 {
// Completed top-level before the current byte.
s.step = stateEndTop
s.endTop = true
return stateEndTop(s, c)
}
if isSpace(c) {
s.step = stateEndValue
return scanSkipSpace
}
ps := s.parseState[n-1]
switch ps {
case parseObjectKey:
if c == ':' {
s.parseState[n-1] = parseObjectValue
s.step = stateBeginValue
return scanObjectKey
}
return s.error(c, "after object key")
case parseObjectValue:
if c == ',' {
s.parseState[n-1] = parseObjectKey
s.step = stateBeginString
return scanObjectValue
}
if c == '}' {
s.popParseState()
return scanEndObject
}
return s.error(c, "after object key:value pair")
case parseArrayValue:
if c == ',' {
s.step = stateBeginValue
return scanArrayValue
}
if c == ']' {
s.popParseState()
return scanEndArray
}
return s.error(c, "after array element")
}
return s.error(c, "")
}
// stateEndTop is the state after finishing the top-level value,
// such as after reading `{}` or `[1,2,3]`.
// Only space characters should be seen now.
func stateEndTop(s *scanner, c byte) int {
if !isSpace(c) {
// Complain about non-space byte on next call.
s.error(c, "after top-level value")
}
return scanEnd
}
// stateInString is the state after reading `"`.
func stateInString(s *scanner, c byte) int {
if c == '"' {
s.step = stateEndValue
return scanContinue
}
if c == '\\' {
s.step = stateInStringEsc
return scanContinue
}
if c < 0x20 {
return s.error(c, "in string literal")
}
return scanContinue
}
// stateInStringEsc is the state after reading `"\` during a quoted string.
func stateInStringEsc(s *scanner, c byte) int {
switch c {
case 'b', 'f', 'n', 'r', 't', '\\', '/', '"':
s.step = stateInString
return scanContinue
case 'u':
s.step = stateInStringEscU
return scanContinue
}
return s.error(c, "in string escape code")
}
// stateInStringEscU is the state after reading `"\u` during a quoted string.
func stateInStringEscU(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInStringEscU1
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateInStringEscU1 is the state after reading `"\u1` during a quoted string.
func stateInStringEscU1(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInStringEscU12
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateInStringEscU12 is the state after reading `"\u12` during a quoted string.
func stateInStringEscU12(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInStringEscU123
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateInStringEscU123 is the state after reading `"\u123` during a quoted string.
func stateInStringEscU123(s *scanner, c byte) int {
if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
s.step = stateInString
return scanContinue
}
// numbers
return s.error(c, "in \\u hexadecimal character escape")
}
// stateNeg is the state after reading `-` during a number.
func stateNeg(s *scanner, c byte) int {
if c == '0' {
s.step = state0
return scanContinue
}
if '1' <= c && c <= '9' {
s.step = state1
return scanContinue
}
return s.error(c, "in numeric literal")
}
// state1 is the state after reading a non-zero integer during a number,
// such as after reading `1` or `100` but not `0`.
func state1(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
s.step = state1
return scanContinue
}
return state0(s, c)
}
// state0 is the state after reading `0` during a number.
func state0(s *scanner, c byte) int {
if c == '.' {
s.step = stateDot
return scanContinue
}
if c == 'e' || c == 'E' {
s.step = stateE
return scanContinue
}
return stateEndValue(s, c)
}
// stateDot is the state after reading the integer and decimal point in a number,
// such as after reading `1.`.
func stateDot(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
s.step = stateDot0
return scanContinue
}
return s.error(c, "after decimal point in numeric literal")
}
// stateDot0 is the state after reading the integer, decimal point, and subsequent
// digits of a number, such as after reading `3.14`.
func stateDot0(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
return scanContinue
}
if c == 'e' || c == 'E' {
s.step = stateE
return scanContinue
}
return stateEndValue(s, c)
}
// stateE is the state after reading the mantissa and e in a number,
// such as after reading `314e` or `0.314e`.
func stateE(s *scanner, c byte) int {
if c == '+' || c == '-' {
s.step = stateESign
return scanContinue
}
return stateESign(s, c)
}
// stateESign is the state after reading the mantissa, e, and sign in a number,
// such as after reading `314e-` or `0.314e+`.
func stateESign(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
s.step = stateE0
return scanContinue
}
return s.error(c, "in exponent of numeric literal")
}
// stateE0 is the state after reading the mantissa, e, optional sign,
// and at least one digit of the exponent in a number,
// such as after reading `314e-2` or `0.314e+1` or `3.14e0`.
func stateE0(s *scanner, c byte) int {
if '0' <= c && c <= '9' {
return scanContinue
}
return stateEndValue(s, c)
}
// stateT is the state after reading `t`.
func stateT(s *scanner, c byte) int {
if c == 'r' {
s.step = stateTr
return scanContinue
}
return s.error(c, "in literal true (expecting 'r')")
}
// stateTr is the state after reading `tr`.
func stateTr(s *scanner, c byte) int {
if c == 'u' {
s.step = stateTru
return scanContinue
}
return s.error(c, "in literal true (expecting 'u')")
}
// stateTru is the state after reading `tru`.
func stateTru(s *scanner, c byte) int {
if c == 'e' {
s.step = stateEndValue
return scanContinue
}
return s.error(c, "in literal true (expecting 'e')")
}
// stateF is the state after reading `f`.
func stateF(s *scanner, c byte) int {
if c == 'a' {
s.step = stateFa
return scanContinue
}
return s.error(c, "in literal false (expecting 'a')")
}
// stateFa is the state after reading `fa`.
func stateFa(s *scanner, c byte) int {
if c == 'l' {
s.step = stateFal
return scanContinue
}
return s.error(c, "in literal false (expecting 'l')")
}
// stateFal is the state after reading `fal`.
func stateFal(s *scanner, c byte) int {
if c == 's' {
s.step = stateFals
return scanContinue
}
return s.error(c, "in literal false (expecting 's')")
}
// stateFals is the state after reading `fals`.
func stateFals(s *scanner, c byte) int {
if c == 'e' {
s.step = stateEndValue
return scanContinue
}
return s.error(c, "in literal false (expecting 'e')")
}
// stateN is the state after reading `n`.
func stateN(s *scanner, c byte) int {
if c == 'u' {
s.step = stateNu
return scanContinue
}
return s.error(c, "in literal null (expecting 'u')")
}
// stateNu is the state after reading `nu`.
func stateNu(s *scanner, c byte) int {
if c == 'l' {
s.step = stateNul
return scanContinue
}
return s.error(c, "in literal null (expecting 'l')")
}
// stateNul is the state after reading `nul`.
func stateNul(s *scanner, c byte) int {
if c == 'l' {
s.step = stateEndValue
return scanContinue
}
return s.error(c, "in literal null (expecting 'l')")
}
// stateError is the state after reaching a syntax error,
// such as after reading `[1}` or `5.1.2`.
func stateError(s *scanner, c byte) int {
return scanError
}
// error records an error and switches to the error state.
func (s *scanner) error(c byte, context string) int {
s.step = stateError
s.err = &SyntaxError{"invalid character " + quoteChar(c) + " " + context, s.bytes}
return scanError
}
// quoteChar formats c as a quoted character literal
func quoteChar(c byte) string {
// special cases - different from quoted strings
if c == '\'' {
return `'\''`
}
if c == '"' {
return `'"'`
}
// use quoted string with different quotation marks
s := strconv.Quote(string(c))
return "'" + s[1:len(s)-1] + "'"
}

519
vendor/sigs.k8s.io/json/internal/golang/encoding/json/stream.go generated vendored Normal file
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// Copyright 2010 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 (
"bytes"
"io"
)
// A Decoder reads and decodes JSON values from an input stream.
type Decoder struct {
r io.Reader
buf []byte
d decodeState
scanp int // start of unread data in buf
scanned int64 // amount of data already scanned
scan scanner
err error
tokenState int
tokenStack []int
}
// NewDecoder returns a new decoder that reads from r.
//
// The decoder introduces its own buffering and may
// read data from r beyond the JSON values requested.
func NewDecoder(r io.Reader) *Decoder {
return &Decoder{r: r}
}
// UseNumber causes the Decoder to unmarshal a number into an interface{} as a
// Number instead of as a float64.
func (dec *Decoder) UseNumber() { dec.d.useNumber = true }
// DisallowUnknownFields causes the Decoder to return an error when the destination
// is a struct and the input contains object keys which do not match any
// non-ignored, exported fields in the destination.
func (dec *Decoder) DisallowUnknownFields() { dec.d.disallowUnknownFields = true }
// Decode reads the next JSON-encoded value from its
// input and stores it in the value pointed to by v.
//
// See the documentation for Unmarshal for details about
// the conversion of JSON into a Go value.
func (dec *Decoder) Decode(v interface{}) error {
if dec.err != nil {
return dec.err
}
if err := dec.tokenPrepareForDecode(); err != nil {
return err
}
if !dec.tokenValueAllowed() {
return &SyntaxError{msg: "not at beginning of value", Offset: dec.InputOffset()}
}
// Read whole value into buffer.
n, err := dec.readValue()
if err != nil {
return err
}
dec.d.init(dec.buf[dec.scanp : dec.scanp+n])
dec.scanp += n
// Don't save err from unmarshal into dec.err:
// the connection is still usable since we read a complete JSON
// object from it before the error happened.
err = dec.d.unmarshal(v)
// fixup token streaming state
dec.tokenValueEnd()
return err
}
// Buffered returns a reader of the data remaining in the Decoder's
// buffer. The reader is valid until the next call to Decode.
func (dec *Decoder) Buffered() io.Reader {
return bytes.NewReader(dec.buf[dec.scanp:])
}
// readValue reads a JSON value into dec.buf.
// It returns the length of the encoding.
func (dec *Decoder) readValue() (int, error) {
dec.scan.reset()
scanp := dec.scanp
var err error
Input:
// help the compiler see that scanp is never negative, so it can remove
// some bounds checks below.
for scanp >= 0 {
// Look in the buffer for a new value.
for ; scanp < len(dec.buf); scanp++ {
c := dec.buf[scanp]
dec.scan.bytes++
switch dec.scan.step(&dec.scan, c) {
case scanEnd:
// scanEnd is delayed one byte so we decrement
// the scanner bytes count by 1 to ensure that
// this value is correct in the next call of Decode.
dec.scan.bytes--
break Input
case scanEndObject, scanEndArray:
// scanEnd is delayed one byte.
// We might block trying to get that byte from src,
// so instead invent a space byte.
if stateEndValue(&dec.scan, ' ') == scanEnd {
scanp++
break Input
}
case scanError:
dec.err = dec.scan.err
return 0, dec.scan.err
}
}
// Did the last read have an error?
// Delayed until now to allow buffer scan.
if err != nil {
if err == io.EOF {
if dec.scan.step(&dec.scan, ' ') == scanEnd {
break Input
}
if nonSpace(dec.buf) {
err = io.ErrUnexpectedEOF
}
}
dec.err = err
return 0, err
}
n := scanp - dec.scanp
err = dec.refill()
scanp = dec.scanp + n
}
return scanp - dec.scanp, nil
}
func (dec *Decoder) refill() error {
// Make room to read more into the buffer.
// First slide down data already consumed.
if dec.scanp > 0 {
dec.scanned += int64(dec.scanp)
n := copy(dec.buf, dec.buf[dec.scanp:])
dec.buf = dec.buf[:n]
dec.scanp = 0
}
// Grow buffer if not large enough.
const minRead = 512
if cap(dec.buf)-len(dec.buf) < minRead {
newBuf := make([]byte, len(dec.buf), 2*cap(dec.buf)+minRead)
copy(newBuf, dec.buf)
dec.buf = newBuf
}
// Read. Delay error for next iteration (after scan).
n, err := dec.r.Read(dec.buf[len(dec.buf):cap(dec.buf)])
dec.buf = dec.buf[0 : len(dec.buf)+n]
return err
}
func nonSpace(b []byte) bool {
for _, c := range b {
if !isSpace(c) {
return true
}
}
return false
}
// An Encoder writes JSON values to an output stream.
type Encoder struct {
w io.Writer
err error
escapeHTML bool
indentBuf *bytes.Buffer
indentPrefix string
indentValue string
}
// NewEncoder returns a new encoder that writes to w.
func NewEncoder(w io.Writer) *Encoder {
return &Encoder{w: w, escapeHTML: true}
}
// Encode writes the JSON encoding of v to the stream,
// followed by a newline character.
//
// See the documentation for Marshal for details about the
// conversion of Go values to JSON.
func (enc *Encoder) Encode(v interface{}) error {
if enc.err != nil {
return enc.err
}
e := newEncodeState()
err := e.marshal(v, encOpts{escapeHTML: enc.escapeHTML})
if err != nil {
return err
}
// Terminate each value with a newline.
// This makes the output look a little nicer
// when debugging, and some kind of space
// is required if the encoded value was a number,
// so that the reader knows there aren't more
// digits coming.
e.WriteByte('\n')
b := e.Bytes()
if enc.indentPrefix != "" || enc.indentValue != "" {
if enc.indentBuf == nil {
enc.indentBuf = new(bytes.Buffer)
}
enc.indentBuf.Reset()
err = Indent(enc.indentBuf, b, enc.indentPrefix, enc.indentValue)
if err != nil {
return err
}
b = enc.indentBuf.Bytes()
}
if _, err = enc.w.Write(b); err != nil {
enc.err = err
}
encodeStatePool.Put(e)
return err
}
// SetIndent instructs the encoder to format each subsequent encoded
// value as if indented by the package-level function Indent(dst, src, prefix, indent).
// Calling SetIndent("", "") disables indentation.
func (enc *Encoder) SetIndent(prefix, indent string) {
enc.indentPrefix = prefix
enc.indentValue = indent
}
// SetEscapeHTML specifies whether problematic HTML characters
// should be escaped inside JSON quoted strings.
// The default behavior is to escape &, <, and > to \u0026, \u003c, and \u003e
// to avoid certain safety problems that can arise when embedding JSON in HTML.
//
// In non-HTML settings where the escaping interferes with the readability
// of the output, SetEscapeHTML(false) disables this behavior.
func (enc *Encoder) SetEscapeHTML(on bool) {
enc.escapeHTML = on
}
/*
// RawMessage is a raw encoded JSON value.
// It implements Marshaler and Unmarshaler and can
// be used to delay JSON decoding or precompute a JSON encoding.
type RawMessage []byte
// MarshalJSON returns m as the JSON encoding of m.
func (m RawMessage) MarshalJSON() ([]byte, error) {
if m == nil {
return []byte("null"), nil
}
return m, nil
}
// UnmarshalJSON sets *m to a copy of data.
func (m *RawMessage) UnmarshalJSON(data []byte) error {
if m == nil {
return errors.New("json.RawMessage: UnmarshalJSON on nil pointer")
}
*m = append((*m)[0:0], data...)
return nil
}
*/
var _ Marshaler = (*RawMessage)(nil)
var _ Unmarshaler = (*RawMessage)(nil)
/*
// A Token holds a value of one of these types:
//
// Delim, for the four JSON delimiters [ ] { }
// bool, for JSON booleans
// float64, for JSON numbers
// Number, for JSON numbers
// string, for JSON string literals
// nil, for JSON null
//
type Token interface{}
*/
const (
tokenTopValue = iota
tokenArrayStart
tokenArrayValue
tokenArrayComma
tokenObjectStart
tokenObjectKey
tokenObjectColon
tokenObjectValue
tokenObjectComma
)
// advance tokenstate from a separator state to a value state
func (dec *Decoder) tokenPrepareForDecode() error {
// Note: Not calling peek before switch, to avoid
// putting peek into the standard Decode path.
// peek is only called when using the Token API.
switch dec.tokenState {
case tokenArrayComma:
c, err := dec.peek()
if err != nil {
return err
}
if c != ',' {
return &SyntaxError{"expected comma after array element", dec.InputOffset()}
}
dec.scanp++
dec.tokenState = tokenArrayValue
case tokenObjectColon:
c, err := dec.peek()
if err != nil {
return err
}
if c != ':' {
return &SyntaxError{"expected colon after object key", dec.InputOffset()}
}
dec.scanp++
dec.tokenState = tokenObjectValue
}
return nil
}
func (dec *Decoder) tokenValueAllowed() bool {
switch dec.tokenState {
case tokenTopValue, tokenArrayStart, tokenArrayValue, tokenObjectValue:
return true
}
return false
}
func (dec *Decoder) tokenValueEnd() {
switch dec.tokenState {
case tokenArrayStart, tokenArrayValue:
dec.tokenState = tokenArrayComma
case tokenObjectValue:
dec.tokenState = tokenObjectComma
}
}
/*
// A Delim is a JSON array or object delimiter, one of [ ] { or }.
type Delim rune
func (d Delim) String() string {
return string(d)
}
*/
// Token returns the next JSON token in the input stream.
// At the end of the input stream, Token returns nil, io.EOF.
//
// Token guarantees that the delimiters [ ] { } it returns are
// properly nested and matched: if Token encounters an unexpected
// delimiter in the input, it will return an error.
//
// The input stream consists of basic JSON values—bool, string,
// number, and null—along with delimiters [ ] { } of type Delim
// to mark the start and end of arrays and objects.
// Commas and colons are elided.
func (dec *Decoder) Token() (Token, error) {
for {
c, err := dec.peek()
if err != nil {
return nil, err
}
switch c {
case '[':
if !dec.tokenValueAllowed() {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenStack = append(dec.tokenStack, dec.tokenState)
dec.tokenState = tokenArrayStart
return Delim('['), nil
case ']':
if dec.tokenState != tokenArrayStart && dec.tokenState != tokenArrayComma {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
dec.tokenValueEnd()
return Delim(']'), nil
case '{':
if !dec.tokenValueAllowed() {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenStack = append(dec.tokenStack, dec.tokenState)
dec.tokenState = tokenObjectStart
return Delim('{'), nil
case '}':
if dec.tokenState != tokenObjectStart && dec.tokenState != tokenObjectComma {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenState = dec.tokenStack[len(dec.tokenStack)-1]
dec.tokenStack = dec.tokenStack[:len(dec.tokenStack)-1]
dec.tokenValueEnd()
return Delim('}'), nil
case ':':
if dec.tokenState != tokenObjectColon {
return dec.tokenError(c)
}
dec.scanp++
dec.tokenState = tokenObjectValue
continue
case ',':
if dec.tokenState == tokenArrayComma {
dec.scanp++
dec.tokenState = tokenArrayValue
continue
}
if dec.tokenState == tokenObjectComma {
dec.scanp++
dec.tokenState = tokenObjectKey
continue
}
return dec.tokenError(c)
case '"':
if dec.tokenState == tokenObjectStart || dec.tokenState == tokenObjectKey {
var x string
old := dec.tokenState
dec.tokenState = tokenTopValue
err := dec.Decode(&x)
dec.tokenState = old
if err != nil {
return nil, err
}
dec.tokenState = tokenObjectColon
return x, nil
}
fallthrough
default:
if !dec.tokenValueAllowed() {
return dec.tokenError(c)
}
var x interface{}
if err := dec.Decode(&x); err != nil {
return nil, err
}
return x, nil
}
}
}
func (dec *Decoder) tokenError(c byte) (Token, error) {
var context string
switch dec.tokenState {
case tokenTopValue:
context = " looking for beginning of value"
case tokenArrayStart, tokenArrayValue, tokenObjectValue:
context = " looking for beginning of value"
case tokenArrayComma:
context = " after array element"
case tokenObjectKey:
context = " looking for beginning of object key string"
case tokenObjectColon:
context = " after object key"
case tokenObjectComma:
context = " after object key:value pair"
}
return nil, &SyntaxError{"invalid character " + quoteChar(c) + context, dec.InputOffset()}
}
// More reports whether there is another element in the
// current array or object being parsed.
func (dec *Decoder) More() bool {
c, err := dec.peek()
return err == nil && c != ']' && c != '}'
}
func (dec *Decoder) peek() (byte, error) {
var err error
for {
for i := dec.scanp; i < len(dec.buf); i++ {
c := dec.buf[i]
if isSpace(c) {
continue
}
dec.scanp = i
return c, nil
}
// buffer has been scanned, now report any error
if err != nil {
return 0, err
}
err = dec.refill()
}
}
// InputOffset returns the input stream byte offset of the current decoder position.
// The offset gives the location of the end of the most recently returned token
// and the beginning of the next token.
func (dec *Decoder) InputOffset() int64 {
return dec.scanned + int64(dec.scanp)
}

218
vendor/sigs.k8s.io/json/internal/golang/encoding/json/tables.go generated vendored Normal file
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// Copyright 2016 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 "unicode/utf8"
// safeSet holds the value true if the ASCII character with the given array
// position can be represented inside a JSON string without any further
// escaping.
//
// All values are true except for the ASCII control characters (0-31), the
// double quote ("), and the backslash character ("\").
var safeSet = [utf8.RuneSelf]bool{
' ': true,
'!': true,
'"': false,
'#': true,
'$': true,
'%': true,
'&': true,
'\'': true,
'(': true,
')': true,
'*': true,
'+': true,
',': true,
'-': true,
'.': true,
'/': true,
'0': true,
'1': true,
'2': true,
'3': true,
'4': true,
'5': true,
'6': true,
'7': true,
'8': true,
'9': true,
':': true,
';': true,
'<': true,
'=': true,
'>': true,
'?': true,
'@': true,
'A': true,
'B': true,
'C': true,
'D': true,
'E': true,
'F': true,
'G': true,
'H': true,
'I': true,
'J': true,
'K': true,
'L': true,
'M': true,
'N': true,
'O': true,
'P': true,
'Q': true,
'R': true,
'S': true,
'T': true,
'U': true,
'V': true,
'W': true,
'X': true,
'Y': true,
'Z': true,
'[': true,
'\\': false,
']': true,
'^': true,
'_': true,
'`': true,
'a': true,
'b': true,
'c': true,
'd': true,
'e': true,
'f': true,
'g': true,
'h': true,
'i': true,
'j': true,
'k': true,
'l': true,
'm': true,
'n': true,
'o': true,
'p': true,
'q': true,
'r': true,
's': true,
't': true,
'u': true,
'v': true,
'w': true,
'x': true,
'y': true,
'z': true,
'{': true,
'|': true,
'}': true,
'~': true,
'\u007f': true,
}
// htmlSafeSet holds the value true if the ASCII character with the given
// array position can be safely represented inside a JSON string, embedded
// inside of HTML <script> tags, without any additional escaping.
//
// All values are true except for the ASCII control characters (0-31), the
// double quote ("), the backslash character ("\"), HTML opening and closing
// tags ("<" and ">"), and the ampersand ("&").
var htmlSafeSet = [utf8.RuneSelf]bool{
' ': true,
'!': true,
'"': false,
'#': true,
'$': true,
'%': true,
'&': false,
'\'': true,
'(': true,
')': true,
'*': true,
'+': true,
',': true,
'-': true,
'.': true,
'/': true,
'0': true,
'1': true,
'2': true,
'3': true,
'4': true,
'5': true,
'6': true,
'7': true,
'8': true,
'9': true,
':': true,
';': true,
'<': false,
'=': true,
'>': false,
'?': true,
'@': true,
'A': true,
'B': true,
'C': true,
'D': true,
'E': true,
'F': true,
'G': true,
'H': true,
'I': true,
'J': true,
'K': true,
'L': true,
'M': true,
'N': true,
'O': true,
'P': true,
'Q': true,
'R': true,
'S': true,
'T': true,
'U': true,
'V': true,
'W': true,
'X': true,
'Y': true,
'Z': true,
'[': true,
'\\': false,
']': true,
'^': true,
'_': true,
'`': true,
'a': true,
'b': true,
'c': true,
'd': true,
'e': true,
'f': true,
'g': true,
'h': true,
'i': true,
'j': true,
'k': true,
'l': true,
'm': true,
'n': true,
'o': true,
'p': true,
'q': true,
'r': true,
's': true,
't': true,
'u': true,
'v': true,
'w': true,
'x': true,
'y': true,
'z': true,
'{': true,
'|': true,
'}': true,
'~': true,
'\u007f': true,
}

44
vendor/sigs.k8s.io/json/internal/golang/encoding/json/tags.go generated vendored Normal file
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// Copyright 2011 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 (
"strings"
)
// tagOptions is the string following a comma in a struct field's "json"
// tag, or the empty string. It does not include the leading comma.
type tagOptions string
// parseTag splits a struct field's json tag into its name and
// comma-separated options.
func parseTag(tag string) (string, tagOptions) {
if idx := strings.Index(tag, ","); idx != -1 {
return tag[:idx], tagOptions(tag[idx+1:])
}
return tag, tagOptions("")
}
// Contains reports whether a comma-separated list of options
// contains a particular substr flag. substr must be surrounded by a
// string boundary or commas.
func (o tagOptions) Contains(optionName string) bool {
if len(o) == 0 {
return false
}
s := string(o)
for s != "" {
var next string
i := strings.Index(s, ",")
if i >= 0 {
s, next = s[:i], s[i+1:]
}
if s == optionName {
return true
}
s = next
}
return false
}

139
vendor/sigs.k8s.io/json/json.go generated vendored Normal file
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/*
Copyright 2021 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package json
import (
gojson "encoding/json"
"fmt"
"io"
internaljson "sigs.k8s.io/json/internal/golang/encoding/json"
)
// Decoder describes the decoding API exposed by `encoding/json#Decoder`
type Decoder interface {
Decode(v interface{}) error
Buffered() io.Reader
Token() (gojson.Token, error)
More() bool
InputOffset() int64
}
// NewDecoderCaseSensitivePreserveInts returns a decoder that matches the behavior of encoding/json#NewDecoder, with the following changes:
// - When unmarshaling into a struct, JSON keys must case-sensitively match `json` tag names (for tagged struct fields)
// or struct field names (for untagged struct fields), or they are treated as unknown fields and discarded.
// - When unmarshaling a number into an interface value, it is unmarshaled as an int64 if
// the JSON data does not contain a "." character and parses as an integer successfully and
// does not overflow int64. Otherwise, the number is unmarshaled as a float64.
// - If a syntax error is returned, it will not be of type encoding/json#SyntaxError,
// but will be recognizeable by this package's IsSyntaxError() function.
func NewDecoderCaseSensitivePreserveInts(r io.Reader) Decoder {
d := internaljson.NewDecoder(r)
d.CaseSensitive()
d.PreserveInts()
return d
}
// UnmarshalCaseSensitivePreserveInts parses the JSON-encoded data and stores the result in the value pointed to by v.
//
// UnmarshalCaseSensitivePreserveInts matches the behavior of encoding/json#Unmarshal, with the following changes:
// - When unmarshaling into a struct, JSON keys must case-sensitively match `json` tag names (for tagged struct fields)
// or struct field names (for untagged struct fields), or they are treated as unknown fields and discarded.
// - When unmarshaling a number into an interface value, it is unmarshaled as an int64 if
// the JSON data does not contain a "." character and parses as an integer successfully and
// does not overflow int64. Otherwise, the number is unmarshaled as a float64.
// - If a syntax error is returned, it will not be of type encoding/json#SyntaxError,
// but will be recognizeable by this package's IsSyntaxError() function.
func UnmarshalCaseSensitivePreserveInts(data []byte, v interface{}) error {
return internaljson.Unmarshal(
data,
v,
internaljson.CaseSensitive,
internaljson.PreserveInts,
)
}
type StrictOption int
const (
// DisallowDuplicateFields returns strict errors if data contains duplicate fields
DisallowDuplicateFields StrictOption = 1
// DisallowUnknownFields returns strict errors if data contains unknown fields when decoding into typed structs
DisallowUnknownFields StrictOption = 2
)
// UnmarshalStrict parses the JSON-encoded data and stores the result in the value pointed to by v.
// Unmarshaling is performed identically to UnmarshalCaseSensitivePreserveInts(), returning an error on failure.
//
// If parsing succeeds, additional strict checks as selected by `strictOptions` are performed
// and a list of the strict failures (if any) are returned. If no `strictOptions` are selected,
// all supported strict checks are performed.
//
// Currently supported strict checks are:
// - DisallowDuplicateFields: ensure the data contains no duplicate fields
// - DisallowUnknownFields: ensure the data contains no unknown fields (when decoding into typed structs)
//
// Additional strict checks may be added in the future.
//
// Note that the strict checks do not change what is stored in v.
// For example, if duplicate fields are present, they will be parsed and stored in v,
// and errors about the duplicate fields will be returned in the strict error list.
func UnmarshalStrict(data []byte, v interface{}, strictOptions ...StrictOption) (strictErrors []error, err error) {
if len(strictOptions) == 0 {
err = internaljson.Unmarshal(data, v,
// options matching UnmarshalCaseSensitivePreserveInts
internaljson.CaseSensitive,
internaljson.PreserveInts,
// all strict options
internaljson.DisallowDuplicateFields,
internaljson.DisallowUnknownFields,
)
} else {
opts := make([]internaljson.UnmarshalOpt, 0, 2+len(strictOptions))
// options matching UnmarshalCaseSensitivePreserveInts
opts = append(opts, internaljson.CaseSensitive, internaljson.PreserveInts)
for _, strictOpt := range strictOptions {
switch strictOpt {
case DisallowDuplicateFields:
opts = append(opts, internaljson.DisallowDuplicateFields)
case DisallowUnknownFields:
opts = append(opts, internaljson.DisallowUnknownFields)
default:
return nil, fmt.Errorf("unknown strict option %d", strictOpt)
}
}
err = internaljson.Unmarshal(data, v, opts...)
}
if strictErr, ok := err.(*internaljson.UnmarshalStrictError); ok {
return strictErr.Errors, nil
}
return nil, err
}
// SyntaxErrorOffset returns if the specified error is a syntax error produced by encoding/json or this package.
func SyntaxErrorOffset(err error) (isSyntaxError bool, offset int64) {
switch err := err.(type) {
case *gojson.SyntaxError:
return true, err.Offset
case *internaljson.SyntaxError:
return true, err.Offset
default:
return false, 0
}
}