1 files changed, 54 insertions, 0 deletions
diff --git a/cmd/crane/cmd/catalog.go b/cmd/crane/cmd/catalog.go
new file mode 100644
index 0000000..0bfa0a9
--- /dev/null
+++ b/cmd/crane/cmd/catalog.go
@@ -0,0 +1,54 @@
+// Copyright 2019 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"
+	"os"
+	"strings"
+
+	"github.com/google/go-containerregistry/pkg/crane"
+	"github.com/spf13/cobra"
+)
+
+// NewCmdCatalog creates a new cobra.Command for the repos subcommand.
+func NewCmdCatalog(options *[]crane.Option, argv ...string) *cobra.Command {
+	if len(argv) == 0 {
+		argv = []string{os.Args[0]}
+	}
+
+	baseCmd := strings.Join(argv, " ")
+	eg := fmt.Sprintf(`  # list the repos for reg.example.com
+  $ %s catalog reg.example.com`, baseCmd)
+
+	return &cobra.Command{
+		Use:     "catalog [REGISTRY]",
+		Short:   "List the repos in a registry",
+		Example: eg,
+		Args:    cobra.ExactArgs(1),
+		RunE: func(_ *cobra.Command, args []string) error {
+			reg := args[0]
+			repos, err := crane.Catalog(reg, *options...)
+			if err != nil {
+				return fmt.Errorf("reading repos for %s: %w", reg, err)
+			}
+
+			for _, repo := range repos {
+				fmt.Println(repo)
+			}
+			return nil
+		},
+	}
+}