// Namespace enables namespacing for a sub-commmand and its immediated children. It returns an error if the command does not have a parent.
func (n *CobraNamespace) Namespace(cmd *cobra.Command) error {
if !cmd.HasParent() {
return errors.New("cmdns: command requires a parent")
}
// Do not bind if there are not available sub commands
if !cmd.HasAvailableSubCommands() {
return nil
}
if n.OverrideUsageFunc {
cmd.SetUsageFunc(n.UsageFunc())
}
for _, c := range cmd.Commands() {
if !c.IsAvailableCommand() {
continue
}
// copy the command add it to the root command with a prefix of its parent.
nc := *c
nc.Use = cmd.Name() + DefaultNamespaceSeparator + c.Use
// add this command to the root and hide it so it does not show in available commands list
c.Parent().Parent().AddCommand(&nc)
c.Hidden = true
n.commands = append(n.commands, &nc)
}
n.cmd = cmd
return nil
}