/
codec.go
61 lines (53 loc) · 1.21 KB
/
codec.go
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package json
import (
"bytes"
"fmt"
"io"
"github.com/plgd-dev/kit/codec/cbor"
"github.com/ugorji/go/codec"
)
// WriteTo writes v to writer.
func WriteTo(w io.Writer, v interface{}) error {
var h codec.JsonHandle
h.BasicHandle.Canonical = true
err := codec.NewEncoder(w, &h).Encode(v)
if err != nil {
return fmt.Errorf("JSON encoder failed: %w", err)
}
return nil
}
// Encode encodes v and returns bytes.
func Encode(v interface{}) ([]byte, error) {
b := bytes.NewBuffer(make([]byte, 0, 128))
err := WriteTo(b, v)
if err != nil {
return nil, err
}
return b.Bytes(), nil
}
// ReadFrom reads and stores the result in v.
func ReadFrom(w io.Reader, v interface{}) error {
var h codec.JsonHandle
err := codec.NewDecoder(w, &h).Decode(v)
if err != nil {
return fmt.Errorf("JSON decoder failed: %w", err)
}
return nil
}
// Decode decodes bytes and stores the result in v.
func Decode(b []byte, v interface{}) error {
buf := bytes.NewBuffer(b)
err := ReadFrom(buf, v)
if err != nil {
return err
}
return nil
}
// ToCBOR converts JSON to CBOR.
func ToCBOR(json string) ([]byte, error) {
var m interface{}
if err := Decode([]byte(json), &m); err != nil {
return nil, err
}
return cbor.Encode(m)
}