container: I/O as strings for base64

pkg/container/reader.go

@@ -7,6 +7,7 @@ import (
 	"fmt"
 	"io"
 	"iter"
+	"strings"
 
 	"github.com/ipfs/go-cid"
 	"github.com/ipld/go-ipld-prime"
@@ -151,8 +152,8 @@ func FromCborReader(r io.Reader) (Reader, error) {
 }
 
 // FromCborBase64 decodes a base64 DAG-CBOR encoded container.
-func FromCborBase64(data []byte) (Reader, error) {
-	return FromCborBase64Reader(bytes.NewReader(data))
+func FromCborBase64(data string) (Reader, error) {
+	return FromCborBase64Reader(strings.NewReader(data))
 }
 
 // FromCborBase64Reader is the same as FromCborBase64, but with an io.Reader.
@@ -189,8 +190,8 @@ func FromCarReader(r io.Reader) (Reader, error) {
 }
 
 // FromCarBase64 decodes a base64 CAR file encoded container.
-func FromCarBase64(data []byte) (Reader, error) {
-	return FromCarReader(bytes.NewReader(data))
+func FromCarBase64(data string) (Reader, error) {
+	return FromCarReader(strings.NewReader(data))
 }
 
 // FromCarBase64Reader is the same as FromCarBase64, but with an io.Reader.

pkg/container/writer.go

@@ -53,13 +53,13 @@ func (ctn Writer) ToCborWriter(w io.Writer) error {
 }
 
 // ToCborBase64 encode the container into a base64 encoded DAG-CBOR binary format.
-func (ctn Writer) ToCborBase64() ([]byte, error) {
+func (ctn Writer) ToCborBase64() (string, error) {
 	var buf bytes.Buffer
 	err := ctn.ToCborBase64Writer(&buf)
 	if err != nil {
-		return nil, err
+		return "", err
 	}
-	return buf.Bytes(), nil
+	return buf.String(), nil
 }
 
 // ToCborBase64Writer is the same as ToCborBase64, but with an io.Writer.
@@ -91,13 +91,13 @@ func (ctn Writer) ToCarWriter(w io.Writer) error {
 }
 
 // ToCarBase64 encode the container into a base64 encoded CAR file.
-func (ctn Writer) ToCarBase64() ([]byte, error) {
+func (ctn Writer) ToCarBase64() (string, error) {
 	var buf bytes.Buffer
 	err := ctn.ToCarBase64Writer(&buf)
 	if err != nil {
-		return nil, err
+		return "", err
 	}
-	return buf.Bytes(), nil
+	return buf.String(), nil
 }
 
 // ToCarBase64Writer is the same as ToCarBase64, but with an io.Writer.