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package opts
import (
"encoding/base64"
"encoding/hex"
"fmt"
base58 "github.com/mr-tron/base58/base58"
mh "github.com/multiformats/go-multihash"
)
func Decode(encoding, digest string) (mh.Multihash, error) {
switch encoding {
case "raw":
return mh.Cast([]byte(digest))
case "hex":
return hex.DecodeString(digest)
case "base58":
return base58.Decode(digest)
case "base64":
return base64.StdEncoding.DecodeString(digest)
default:
return nil, fmt.Errorf("unknown encoding: %s", encoding)
}
}
func Encode(encoding string, hash mh.Multihash) (string, error) {
switch encoding {
case "raw":
return string(hash), nil
case "hex":
return hex.EncodeToString(hash), nil
case "base58":
return base58.Encode(hash), nil
case "base64":
return base64.StdEncoding.EncodeToString(hash), nil
default:
return "", fmt.Errorf("unknown encoding: %s", encoding)
}
}
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