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package securecookie
import "fmt"
var _ Codec = (*LiteCodec)(nil)
func NewLiteCodec() *LiteCodec {
s := &LiteCodec{
sz: GobEncoder{},
}
return s
}
// LiteCodec encodes and decodes
type LiteCodec struct {
err error
sz Serializer
}
// Encoding sets the encoding/serialization method for cookies.
//
// Default is encoding/gob. To encode special structures using encoding/gob,
// they must be registered first using gob.Register().
func (s *LiteCodec) SetSerializer(sz Serializer) *LiteCodec {
s.sz = sz
return s
}
// Encode encodes a value.
func (s *LiteCodec) Encode(name string, value interface{}) (string, error) {
if s.err != nil {
return "", s.err
}
var err error
var b []byte
// Serialize.
if b, err = s.sz.Serialize(value); err != nil {
return "", cookieError{cause: fmt.Errorf(`%w: %s`, err, name), typ: usageError}
}
// Done.
return string(b), nil
}
// Decode decodes a value. The dst argument must be a pointer.
func (s *LiteCodec) Decode(name, value string, dst interface{}, _ ...int) error {
if s.err != nil {
return s.err
}
// Deserialize.
if err := s.sz.Deserialize([]byte(value), dst); err != nil {
return cookieError{cause: fmt.Errorf(`%w: %s`, err, name), typ: decodeError}
}
// Done.
return nil
}
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