mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-07 20:30:36 -05:00
132 lines
3.2 KiB
Go
132 lines
3.2 KiB
Go
// Copyright 2019 The Hugo Authors. All rights reserved.
|
|
//
|
|
// 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 parser
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"regexp"
|
|
"unicode"
|
|
"unicode/utf8"
|
|
|
|
"github.com/gohugoio/hugo/common/hreflect"
|
|
)
|
|
|
|
// Regexp definitions
|
|
var (
|
|
keyMatchRegex = regexp.MustCompile(`\"(\w+)\":`)
|
|
nullEnableBoolRegex = regexp.MustCompile(`\"(enable\w+)\":null`)
|
|
)
|
|
|
|
type NullBoolJSONMarshaller struct {
|
|
Wrapped json.Marshaler
|
|
}
|
|
|
|
func (c NullBoolJSONMarshaller) MarshalJSON() ([]byte, error) {
|
|
b, err := c.Wrapped.MarshalJSON()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return nullEnableBoolRegex.ReplaceAll(b, []byte(`"$1": false`)), nil
|
|
}
|
|
|
|
// Code adapted from https://gist.github.com/piersy/b9934790a8892db1a603820c0c23e4a7
|
|
type LowerCaseCamelJSONMarshaller struct {
|
|
Value any
|
|
}
|
|
|
|
var preserveUpperCaseKeyRe = regexp.MustCompile(`^"HTTP`)
|
|
|
|
func preserveUpperCaseKey(match []byte) bool {
|
|
return preserveUpperCaseKeyRe.Match(match)
|
|
}
|
|
|
|
func (c LowerCaseCamelJSONMarshaller) MarshalJSON() ([]byte, error) {
|
|
marshalled, err := json.Marshal(c.Value)
|
|
|
|
converted := keyMatchRegex.ReplaceAllFunc(
|
|
marshalled,
|
|
func(match []byte) []byte {
|
|
// Attributes on the form XML, JSON etc.
|
|
if bytes.Equal(match, bytes.ToUpper(match)) {
|
|
return bytes.ToLower(match)
|
|
}
|
|
|
|
// Empty keys are valid JSON, only lowercase if we do not have an
|
|
// empty key.
|
|
if len(match) > 2 && !preserveUpperCaseKey(match) {
|
|
// Decode first rune after the double quotes
|
|
r, width := utf8.DecodeRune(match[1:])
|
|
r = unicode.ToLower(r)
|
|
utf8.EncodeRune(match[1:width+1], r)
|
|
}
|
|
return match
|
|
},
|
|
)
|
|
|
|
return converted, err
|
|
}
|
|
|
|
type ReplacingJSONMarshaller struct {
|
|
Value any
|
|
|
|
KeysToLower bool
|
|
OmitEmpty bool
|
|
}
|
|
|
|
func (c ReplacingJSONMarshaller) MarshalJSON() ([]byte, error) {
|
|
converted, err := json.Marshal(c.Value)
|
|
|
|
if c.KeysToLower {
|
|
converted = keyMatchRegex.ReplaceAllFunc(
|
|
converted,
|
|
func(match []byte) []byte {
|
|
return bytes.ToLower(match)
|
|
},
|
|
)
|
|
}
|
|
|
|
if c.OmitEmpty {
|
|
// It's tricky to do this with a regexp, so convert it to a map, remove zero values and convert back.
|
|
var m map[string]interface{}
|
|
err = json.Unmarshal(converted, &m)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var removeZeroVAlues func(m map[string]any)
|
|
removeZeroVAlues = func(m map[string]any) {
|
|
for k, v := range m {
|
|
if !hreflect.IsTruthful(v) {
|
|
delete(m, k)
|
|
} else {
|
|
switch vv := v.(type) {
|
|
case map[string]interface{}:
|
|
removeZeroVAlues(vv)
|
|
case []interface{}:
|
|
for _, vvv := range vv {
|
|
if m, ok := vvv.(map[string]any); ok {
|
|
removeZeroVAlues(m)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
removeZeroVAlues(m)
|
|
converted, err = json.Marshal(m)
|
|
|
|
}
|
|
|
|
return converted, err
|
|
}
|