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Fixed writing to null document

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This commit is contained in:
Mike Farah 2020-02-21 11:02:10 +11:00
parent 0347516d82
commit 44322f0248
2 changed files with 28 additions and 1 deletions
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19
cmd/commands_test.go
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@ -1245,6 +1245,25 @@ func TestWriteCmd(t *testing.T) {
test.AssertResult(t, expectedOutput, result.Output)
}
func TestWriteEmptyMultiDocCmd(t *testing.T) {
content := `# this is empty
---
`
filename := test.WriteTempYamlFile(content)
defer test.RemoveTempYamlFile(filename)
cmd := getRootCommand()
result := test.RunCmd(cmd, fmt.Sprintf("write %s c 7", filename))
if result.Error != nil {
t.Error(result.Error)
}
expectedOutput := `c: 7
# this is empty
`
test.AssertResult(t, expectedOutput, result.Output)
}
func TestWriteFromFileCmd(t *testing.T) {
content := `b:
c: 3

10
cmd/utils.go
View File

@ -199,6 +199,11 @@ func parseDocumentIndex() (bool, int, error) {
type updateDataFn func(dataBucket *yaml.Node, currentIndex int) error
func isNullDocument(dataBucket *yaml.Node) bool {
return dataBucket.Kind == yaml.DocumentNode && (len(dataBucket.Content) == 0 ||
dataBucket.Content[0].Kind == yaml.ScalarNode && dataBucket.Content[0].Tag == "!!null")
}
func mapYamlDecoder(updateData updateDataFn, encoder yqlib.Encoder) yamlDecoderFn {
return func(decoder *yaml.Decoder) error {
var dataBucket yaml.Node
@ -218,8 +223,11 @@ func mapYamlDecoder(updateData updateDataFn, encoder yqlib.Encoder) yamlDecoderF
if errorReading == io.EOF && docIndexInt == 0 && currentIndex == 0 {
//empty document, lets just make one
child := yaml.Node{Kind: yaml.MappingNode}
dataBucket = yaml.Node{Kind: yaml.DocumentNode, Content: make([]*yaml.Node, 1)}
child := yaml.Node{Kind: yaml.MappingNode}
dataBucket.Content[0] = &child
} else if isNullDocument(&dataBucket) {
child := yaml.Node{Kind: yaml.MappingNode}
dataBucket.Content[0] = &child
} else if errorReading == io.EOF {
if !updateAll && currentIndex <= docIndexInt {