show subcommand creation for review

internal/cmd/list.go

@@ -0,0 +1,64 @@
+/*
+Copyright 2022 The OpenVEX Authors
+SPDX-License-Identifier: Apache-2.0
+*/
+
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+
+	"github.com/openvex/go-vex/pkg/vex"
+)
+
+func addList(parentCmd *cobra.Command) {
+	listCmd := &cobra.Command{
+		Short: fmt.Sprintf("%s list: lists valid status or justification options", appname),
+		Long: fmt.Sprintf(`%s list: list the valid input options according to the OpenVEX spec
+
+When composing VEX documents it is important to ensure the VEX specification
+is being adhered to for fields that require specific values. The list subcommand
+will provide the valid options for fields such as status or justification.
+
+Examples:
+
+# list the status options
+%s list status
+
+# list the justification options
+%s list justification
+
+
+`, appname, appname, appname),
+		Use:               "list",
+		SilenceUsage:      false,
+		SilenceErrors:     false,
+		PersistentPreRunE: initLogging,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if len(args) == 0 {
+				return fmt.Errorf("selection of 'status' or 'justification' is required")
+			}
+			for _, v := range args {
+				switch v {
+				case "status":
+					fmt.Printf("Valid Statuses:\n")
+					for _, status := range vex.Statuses() {
+						fmt.Printf("\t%s\n", status)
+					}
+				case "justification":
+					fmt.Printf("Valid Justifications:\n")
+					for _, justification := range vex.Justifications() {
+						fmt.Printf("\t%s\n", justification)
+					}
+				default:
+					return fmt.Errorf("%s is not a valid selection - available options are 'status' and 'justification'", v)
+				}
+			}
+			return nil
+		},
+	}
+
+	parentCmd.AddCommand(listCmd)
+}

internal/cmd/main.go

@@ -53,6 +53,7 @@ func init() {
 	addAttest(rootCmd)
 	addMerge(rootCmd)
 	addCreate(rootCmd)
+	addList(rootCmd)
 	rootCmd.AddCommand(version.WithFont("doom"))
 }