package daemon
 
 import (
 	"github.com/docker/docker/image"
 	"github.com/docker/docker/reference"
 )
 
 // TagImage creates the tag specified by newTag, pointing to the image named
 // imageName (alternatively, imageName can also be an image ID).
 func (daemon *Daemon) TagImage(imageName, repository, tag string) error {
 	imageID, err := daemon.GetImageID(imageName)
 	if err != nil {
 		return err
 	}
 
 	newTag, err := reference.WithName(repository)
 	if err != nil {
 		return err
 	}
 	if tag != "" {
 		if newTag, err = reference.WithTag(newTag, tag); err != nil {
 			return err
 		}
 	}
 
 	return daemon.TagImageWithReference(imageID, newTag)
 }
 
 // TagImageWithReference adds the given reference to the image ID provided.
 func (daemon *Daemon) TagImageWithReference(imageID image.ID, newTag reference.Named) error {

 	if err := daemon.referenceStore.AddTag(newTag, imageID.Digest(), true); err != nil {

 		return err
 	}
 
 	daemon.LogImageEvent(imageID.String(), newTag.String(), "tag")
 	return nil
 }