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101 lines
2.4 KiB
Go
101 lines
2.4 KiB
Go
package yml
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import (
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"encoding/json"
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"fmt"
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"os"
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"strconv"
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"gopkg.in/yaml.v3"
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)
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// toJSON convert gopkg.in/yaml.v3 nodes to object that can be serialized as json
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// fmt.Sprint() with default formatting is used to convert the key to a string key.
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func toJSON(node *yaml.Node) (interface{}, error) {
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switch node.Kind {
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case yaml.DocumentNode:
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return toJSON(node.Content[0])
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case yaml.SequenceNode:
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val := make([]interface{}, len(node.Content))
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var err error
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for i := range node.Content {
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if val[i], err = toJSON(node.Content[i]); err != nil {
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return nil, err
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}
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}
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return val, nil
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case yaml.MappingNode:
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if (len(node.Content) % 2) != 0 {
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return nil, fmt.Errorf("broken mapping node")
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}
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val := make(map[string]interface{}, len(node.Content)%2)
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for i := len(node.Content); i > 1; i = i - 2 {
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k, err := toJSON(node.Content[i-2])
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if err != nil {
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return nil, err
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}
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if val[fmt.Sprint(k)], err = toJSON(node.Content[i-1]); err != nil {
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return nil, err
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}
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}
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return val, nil
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case yaml.ScalarNode:
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switch node.Tag {
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case nullTag:
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return nil, nil
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case boolTag:
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return strconv.ParseBool(node.Value)
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case intTag:
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return strconv.ParseInt(node.Value, 10, 64)
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case floatTag:
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return strconv.ParseFloat(node.Value, 64)
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}
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return node.Value, nil
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}
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return nil, fmt.Errorf("do not support yaml node kind '%v'", node.Kind)
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}
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func ToJSON(data []byte) ([]byte, error) {
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m := &yaml.Node{}
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if err := yaml.Unmarshal(data, m); err != nil {
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return nil, err
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}
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d, err := toJSON(m)
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if err != nil {
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return nil, err
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}
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return json.Marshal(d)
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}
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func LoadYmlFileAsJSON(path string) (j []byte, err error) {
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data, err := os.ReadFile(path)
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if err != nil {
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return nil, err
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}
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j, err = ToJSON(data)
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if err != nil {
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return nil, err
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}
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return j, nil
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}
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// Source: https://github.com/go-yaml/yaml/blob/3e3283e801afc229479d5fc68aa41df1137b8394/resolve.go#L70-L81
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const (
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nullTag = "!!null"
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boolTag = "!!bool"
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intTag = "!!int"
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floatTag = "!!float"
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// strTag = "!!str" // we dont have to parse it
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// timestampTag = "!!timestamp" // TODO: do we have to parse this?
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// seqTag = "!!seq" // TODO: do we have to parse this?
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// mapTag = "!!map" // TODO: do we have to parse this?
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// binaryTag = "!!binary" // TODO: do we have to parse this?
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// mergeTag = "!!merge" // TODO: do we have to parse this?
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)
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