helmfile/pkg/yaml/yaml.go

60 lines
1.3 KiB
Go

package yaml
import (
"bytes"
"io"
"github.com/goccy/go-yaml"
)
type Encoder interface {
Encode(any) error
Close() error
}
// NewEncoder creates and returns a function that is used to encode a Go object to a YAML document
func NewEncoder(w io.Writer) Encoder {
return yaml.NewEncoder(w)
}
func Unmarshal(data []byte, v any) error {
return yaml.Unmarshal(data, v)
}
// NewDecoder creates and returns a function that is used to decode a YAML document
// contained within the YAML document stream per each call.
// When strict is true, this function ensures that every field found in the YAML document
// to have the corresponding field in the decoded Go struct.
func NewDecoder(data []byte, strict bool) func(any) error {
var opts []yaml.DecodeOption
if strict {
opts = append(opts, yaml.DisallowUnknownField())
}
// allow duplicate keys
opts = append(opts, yaml.AllowDuplicateMapKey())
decoder := yaml.NewDecoder(
bytes.NewReader(data),
opts...,
)
return func(v any) error {
return decoder.Decode(v)
}
}
func Marshal(v any) ([]byte, error) {
var b bytes.Buffer
yamlEncoder := yaml.NewEncoder(
&b,
yaml.Indent(2),
yaml.UseSingleQuote(true),
yaml.UseLiteralStyleIfMultiline(true),
)
err := yamlEncoder.Encode(v)
defer func() {
_ = yamlEncoder.Close()
}()
return b.Bytes(), err
}