moby/cli/required.go
Daniel Nephin 4f0d95fa6e Add canonical import comment
Signed-off-by: Daniel Nephin <dnephin@docker.com>
2018-02-05 16:51:57 -05:00

27 lines
569 B
Go

package cli // import "github.com/docker/docker/cli"
import (
"strings"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
// NoArgs validates args and returns an error if there are any args
func NoArgs(cmd *cobra.Command, args []string) error {
if len(args) == 0 {
return nil
}
if cmd.HasSubCommands() {
return errors.Errorf("\n" + strings.TrimRight(cmd.UsageString(), "\n"))
}
return errors.Errorf(
"\"%s\" accepts no argument(s).\nSee '%s --help'.\n\nUsage: %s\n\n%s",
cmd.CommandPath(),
cmd.CommandPath(),
cmd.UseLine(),
cmd.Short,
)
}