yq/pkg/yqlib/encoder_json.go

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package yqlib
import (
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"bytes"
"encoding/json"
"io"
yaml "gopkg.in/yaml.v3"
)
type jsonEncoder struct {
indentString string
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colorise bool
}
func mapKeysToStrings(node *yaml.Node) {
if node.Kind == yaml.MappingNode {
for index, child := range node.Content {
if index%2 == 0 { // its a map key
child.Tag = "!!str"
}
}
}
for _, child := range node.Content {
mapKeysToStrings(child)
}
}
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func NewJONEncoder(indent int, colorise bool) Encoder {
var indentString = ""
for index := 0; index < indent; index++ {
indentString = indentString + " "
}
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return &jsonEncoder{indentString, colorise}
}
func (je *jsonEncoder) CanHandleAliases() bool {
return false
}
func (je *jsonEncoder) PrintDocumentSeparator(writer io.Writer) error {
return nil
}
func (je *jsonEncoder) PrintLeadingContent(writer io.Writer, content string) error {
return nil
}
func (je *jsonEncoder) Encode(writer io.Writer, node *yaml.Node) error {
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destination := writer
tempBuffer := bytes.NewBuffer(nil)
if je.colorise {
destination = tempBuffer
}
var encoder = json.NewEncoder(destination)
encoder.SetEscapeHTML(false) // do not escape html chars e.g. &, <, >
encoder.SetIndent("", je.indentString)
var dataBucket orderedMap
// firstly, convert all map keys to strings
mapKeysToStrings(node)
errorDecoding := node.Decode(&dataBucket)
if errorDecoding != nil {
return errorDecoding
}
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err := encoder.Encode(dataBucket)
if err != nil {
return err
}
if je.colorise {
return colorizeAndPrint(tempBuffer.Bytes(), writer)
}
return nil
}