1 files changed, 62 insertions, 0 deletions
diff --git a/cmd/crane/cmd/list.go b/cmd/crane/cmd/list.go
new file mode 100644
index 0000000..3902ccd
--- /dev/null
+++ b/cmd/crane/cmd/list.go
@@ -0,0 +1,62 @@
+// Copyright 2018 Google LLC All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/google/go-containerregistry/pkg/crane"
+	"github.com/google/go-containerregistry/pkg/name"
+	"github.com/spf13/cobra"
+)
+
+// NewCmdList creates a new cobra.Command for the ls subcommand.
+func NewCmdList(options *[]crane.Option) *cobra.Command {
+	var fullRef, omitDigestTags bool
+	cmd := &cobra.Command{
+		Use:   "ls REPO",
+		Short: "List the tags in a repo",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(_ *cobra.Command, args []string) error {
+			repo := args[0]
+			tags, err := crane.ListTags(repo, *options...)
+			if err != nil {
+				return fmt.Errorf("reading tags for %s: %w", repo, err)
+			}
+
+			r, err := name.NewRepository(repo)
+			if err != nil {
+				return err
+			}
+
+			for _, tag := range tags {
+				if omitDigestTags && strings.HasPrefix(tag, "sha256-") {
+					continue
+				}
+
+				if fullRef {
+					fmt.Println(r.Tag(tag))
+				} else {
+					fmt.Println(tag)
+				}
+			}
+			return nil
+		},
+	}
+	cmd.Flags().BoolVar(&fullRef, "full-ref", false, "(Optional) if true, print the full image reference")
+	cmd.Flags().BoolVar(&omitDigestTags, "omit-digest-tags", false, "(Optional), if true, omit digest tags (e.g., ':sha256-...')")
+	return cmd
+}