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Fixed json decode to maintain key order

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This commit is contained in:
Mike Farah 2022-08-01 16:26:43 +10:00
parent a91a8ccc66
commit 2c9b5be408
3 changed files with 57 additions and 27 deletions
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47
pkg/yqlib/decoder_json.go
View File

@ -22,13 +22,13 @@ func (dec *jsonDecoder) Init(reader io.Reader) {
func (dec *jsonDecoder) Decode(rootYamlNode *yaml.Node) error {
var dataBucket interface{}
var dataBucket orderedMap
log.Debug("going to decode")
err := dec.decoder.Decode(&dataBucket)
if err != nil {
return err
}
node, err := dec.convertToYamlNode(dataBucket)
node, err := dec.convertToYamlNode(&dataBucket)
if err != nil {
return err
@ -38,39 +38,36 @@ func (dec *jsonDecoder) Decode(rootYamlNode *yaml.Node) error {
return nil
}
func (dec *jsonDecoder) convertToYamlNode(data interface{}) (*yaml.Node, error) {
switch data := data.(type) {
case nil:
return createScalarNode(nil, "null"), nil
case float64, float32:
// json decoder returns ints as float.
return parseSnippet(fmt.Sprintf("%v", data))
case int, int64, int32, string, bool:
return createScalarNode(data, fmt.Sprintf("%v", data)), nil
case map[string]interface{}:
return dec.parseMap(data)
case []interface{}:
return dec.parseArray(data)
default:
return nil, fmt.Errorf("unrecognised type :(")
func (dec *jsonDecoder) convertToYamlNode(data *orderedMap) (*yaml.Node, error) {
if data.kv == nil {
switch rawData := data.altVal.(type) {
case nil:
return createScalarNode(nil, "null"), nil
case float64, float32:
// json decoder returns ints as float.
return parseSnippet(fmt.Sprintf("%v", rawData))
case int, int64, int32, string, bool:
return createScalarNode(rawData, fmt.Sprintf("%v", rawData)), nil
case []*orderedMap:
return dec.parseArray(rawData)
default:
return nil, fmt.Errorf("unrecognised type :( %v", rawData)
}
}
}
func (dec *jsonDecoder) parseMap(dataMap map[string]interface{}) (*yaml.Node, error) {
var yamlMap = &yaml.Node{Kind: yaml.MappingNode}
for key, value := range dataMap {
yamlValue, err := dec.convertToYamlNode(value)
for _, keyValuePair := range data.kv {
yamlValue, err := dec.convertToYamlNode(&keyValuePair.V)
if err != nil {
return nil, err
}
yamlMap.Content = append(yamlMap.Content, createScalarNode(key, fmt.Sprintf("%v", key)), yamlValue)
yamlMap.Content = append(yamlMap.Content, createScalarNode(keyValuePair.K, keyValuePair.K), yamlValue)
}
return yamlMap, nil
}
func (dec *jsonDecoder) parseArray(dataArray []interface{}) (*yaml.Node, error) {
func (dec *jsonDecoder) parseArray(dataArray []*orderedMap) (*yaml.Node, error) {
var yamlMap = &yaml.Node{Kind: yaml.SequenceNode}

9
pkg/yqlib/encoder.go
View File

@ -66,8 +66,13 @@ func (o *orderedMap) UnmarshalJSON(data []byte) error {
}
return nil
case '[':
var arr []orderedMap
return json.Unmarshal(data, &arr)
var res []*orderedMap
if err := json.Unmarshal(data, &res); err != nil {
return err
}
o.altVal = res
o.kv = nil
return nil
}
return json.Unmarshal(data, &o.altVal)

28
pkg/yqlib/json_test.go
View File

@ -22,6 +22,13 @@ const sampleNdJson = `{"this": "is a multidoc json file"}
{"a number": 4}
`
const sampleNdJsonKey = `{"a": "first", "b": "next", "ab": "last"}`
const expectedJsonKeysInOrder = `a: first
b: next
ab: last
`
const expectedNdJsonYaml = `this: is a multidoc json file
---
each:
@ -157,6 +164,13 @@ var jsonScenarios = []formatScenario{
expected: expectedNdJsonYaml,
scenarioType: "decode-ndjson",
},
{
description: "Decode NDJSON, maintain key order",
skipDoc: true,
input: sampleNdJsonKey,
expected: expectedJsonKeysInOrder,
scenarioType: "decode-ndjson",
},
{
description: "numbers",
skipDoc: true,
@ -164,6 +178,20 @@ var jsonScenarios = []formatScenario{
expected: "- 3\n- 3\n- 3.1\n- -1\n",
scenarioType: "decode-ndjson",
},
{
description: "number single",
skipDoc: true,
input: "3",
expected: "3\n",
scenarioType: "decode-ndjson",
},
{
description: "empty string",
skipDoc: true,
input: `""`,
expected: "\"\"\n",
scenarioType: "decode-ndjson",
},
{
description: "strings",
skipDoc: true,