client/image_(inspect,history,load,save): Wrap return values

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

client/image_save.go

@@ -2,21 +2,20 @@ package client
 
 import (
 	"context"
-	"io"
 	"net/url"
 )
 
 // ImageSave retrieves one or more images from the docker host as an
-// [io.ReadCloser].
+// [ImageSaveResult].
 //
 // Platforms is an optional parameter that specifies the platforms to save
 // from the image. Passing a platform only has an effect if the input image
 // is a multi-platform image.
-func (cli *Client) ImageSave(ctx context.Context, imageIDs []string, saveOpts ...ImageSaveOption) (io.ReadCloser, error) {
+func (cli *Client) ImageSave(ctx context.Context, imageIDs []string, saveOpts ...ImageSaveOption) (ImageSaveResult, error) {
 	var opts imageSaveOpts
 	for _, opt := range saveOpts {
 		if err := opt.Apply(&opts); err != nil {
-			return nil, err
+			return ImageSaveResult{}, err
 		}
 	}
 
@@ -26,18 +25,18 @@ func (cli *Client) ImageSave(ctx context.Context, imageIDs []string, saveOpts ..
 
 	if len(opts.apiOptions.Platforms) > 0 {
 		if err := cli.NewVersionError(ctx, "1.48", "platform"); err != nil {
-			return nil, err
+			return ImageSaveResult{}, err
 		}
 		p, err := encodePlatforms(opts.apiOptions.Platforms...)
 		if err != nil {
-			return nil, err
+			return ImageSaveResult{}, err
 		}
 		query["platform"] = p
 	}
 
 	resp, err := cli.get(ctx, "/images/get", query, nil)
 	if err != nil {
-		return nil, err
+		return ImageSaveResult{}, err
 	}
-	return resp.Body, nil
+	return newImageSaveResult(resp.Body), nil
 }