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key.go
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key.go
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package yamlkeys
import (
"fmt"
"strings"
"gopkg.in/yaml.v3"
)
func KeyData(data any) any {
if key, ok := data.(Key); ok {
return key.GetKeyData()
} else {
return data
}
}
func KeyString(data any) string {
if string_, ok := data.(string); ok {
return string_
} else if stringer, ok := data.(fmt.Stringer); ok {
return stringer.String()
} else {
return fmt.Sprintf("%v", data)
}
}
//
// Key
//
type Key interface {
GetKeyData() any
}
//
// YAMLKey
//
type YAMLKey struct {
Data any
Text string
}
func NewYAMLKey(data any) (*YAMLKey, error) {
var writer strings.Builder
encoder := yaml.NewEncoder(&writer)
encoder.SetIndent(1) // as compact as possible
if err := encoder.Encode(data); err == nil {
return &YAMLKey{
Data: data,
Text: strings.TrimSuffix(writer.String(), "\n"),
}, nil
} else {
return nil, err
}
}
// Key interface
func (self *YAMLKey) GetKeyData() any {
return self.Data
}
// fmt.Stringify interface
func (self *YAMLKey) String() string {
return self.Text
}
// yaml.Marshaler interface
func (self *YAMLKey) MarshalYAML() (any, error) {
return self.Data, nil
}
// Utils
func IsSimpleKey(data any) bool {
switch data.(type) {
case Map, Sequence:
return false
}
return true
}