// InitCommand will create a new flag set, and call the Command's SetFlags and
// Init methods with the appropriate args.
func InitCommand(c cmd.Command, args []string) error {
f := NewFlagSet()
c.SetFlags(f)
if err := cmd.ParseArgs(c, f, args); err != nil {
return err
}
return c.Init(f.Args())
}
func RunPlugin(ctx *cmd.Context, subcommand string, args []string) error {
plugin := &PluginCommand{name: JujuPluginPrefix + subcommand}
flags := gnuflag.NewFlagSet(subcommand, gnuflag.ContinueOnError)
flags.SetOutput(ioutil.Discard)
plugin.SetFlags(flags)
cmd.ParseArgs(plugin, flags, args)
plugin.Init(flags.Args())
err := plugin.Run(ctx)
_, execError := err.(*exec.Error)
// exec.Error results are for when the executable isn't found, in
// those cases, drop through.
if !execError {
return err
}
return &cmd.UnrecognizedCommand{subcommand}
}