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package hashenc
import (
"encoding/base32"
"encoding/base64"
"encoding/hex"
)
// Encoder defines an interface for encoding binary data.
type Encoder interface {
// Encode encodes the data at src into dst
Encode(dst []byte, src []byte)
// EncodedLen returns the encoded length for input data of supplied length
EncodedLen(int) int
}
// Base32 returns a new base32 Encoder (StdEncoding, no padding).
func Base32() Encoder {
return base32.StdEncoding.WithPadding(base64.NoPadding)
}
// Base64 returns a new base64 Encoder (URLEncoding, no padding).
func Base64() Encoder {
return base64.URLEncoding.WithPadding(base64.NoPadding)
}
// Hex returns a new hex Encoder.
func Hex() Encoder {
return &hexEncoder{}
}
// hexEncoder simply provides an empty receiver to satisfy Encoder.
type hexEncoder struct{}
func (*hexEncoder) Encode(dst []byte, src []byte) {
hex.Encode(dst, src)
}
func (*hexEncoder) EncodedLen(len int) int {
return hex.EncodedLen(len)
}
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