73 lines
1.8 KiB
Go
73 lines
1.8 KiB
Go
package main
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import (
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"github.com/containers/image/docker/reference"
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"github.com/containers/storage"
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"github.com/pkg/errors"
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"github.com/urfave/cli"
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)
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var (
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tagDescription = "Adds one or more additional names to locally-stored image"
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tagCommand = cli.Command{
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Name: "tag",
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Usage: "Add an additional name to a local image",
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Description: tagDescription,
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Action: tagCmd,
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ArgsUsage: "IMAGE-NAME [IMAGE-NAME ...]",
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}
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)
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func tagCmd(c *cli.Context) error {
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args := c.Args()
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if len(args) < 2 {
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return errors.Errorf("image name and at least one new name must be specified")
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}
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store, err := getStore(c)
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if err != nil {
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return err
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}
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img, err := findImage(store, args[0])
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if err != nil {
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return err
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}
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if img == nil {
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return errors.New("null image")
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}
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err = addImageNames(store, img, args[1:])
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if err != nil {
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return errors.Wrapf(err, "error adding names %v to image %q", args[1:], args[0])
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}
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return nil
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}
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func addImageNames(store storage.Store, image *storage.Image, addNames []string) error {
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// Add tags to the names if applicable
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names, err := expandedTags(addNames)
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if err != nil {
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return err
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}
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err = store.SetNames(image.ID, append(image.Names, names...))
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if err != nil {
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return errors.Wrapf(err, "error adding names (%v) to image %q", names, image.ID)
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}
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return nil
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}
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func expandedTags(tags []string) ([]string, error) {
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expandedNames := []string{}
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for _, tag := range tags {
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name, err := reference.ParseNormalizedNamed(tag)
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if err != nil {
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return nil, errors.Wrapf(err, "error parsing tag %q", name)
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}
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name = reference.TagNameOnly(name)
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newTag := ""
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if tagged, ok := name.(reference.NamedTagged); ok {
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newTag = tagged.Tag()
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}
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expandedNames = append(expandedNames, name.Name()+":"+newTag)
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}
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return expandedNames, nil
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}
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