func getImage(name string, localOnly bool) (*jetpack.Image, error) {
if h, err := types.NewHash(name); err == nil {
if len(name) < hashSize {
// Short hash. Iterate over images, return first prefix match.
// FIXME: what about multiple matches?
name = strings.ToLower(name)
if imgs, err := Host.Images(); err != nil {
return nil, errors.Trace(err)
} else {
for _, img := range imgs {
if strings.HasPrefix(img.Hash.String(), name) {
return img, nil
}
}
return nil, jetpack.ErrNotFound
}
}
return Host.GetImage(*h, "", nil)
}
if name, labels, err := acutil.ParseImageName(name); err != nil {
return nil, errors.Trace(err)
} else if localOnly {
return Host.GetLocalImage(types.Hash{}, name, labels)
} else {
return Host.GetImage(types.Hash{}, name, labels)
}
}
func cmdFetch(args []string) error {
var idf *os.File
if SaveID != "" {
if f, err := os.Create(SaveID); err != nil {
return err
} else {
idf = f
defer idf.Close()
}
}
for _, name := range args {
if name, labels, err := acutil.ParseImageName(name); err != nil {
return errors.Trace(err)
} else if img, err := Host.FetchImage(types.Hash{}, name, labels); err != nil {
return errors.Trace(err)
} else {
if idf != nil {
fmt.Fprintln(idf, img.Hash)
}
if err := cmdShowImage(img); err != nil {
return errors.Trace(err)
}
}
}
return nil
}