github.com/ssdev-go/moby@v17.12.1-ce-rc2+incompatible/cli/required.go (about)

     1  package cli
     2  
     3  import (
     4  	"strings"
     5  
     6  	"github.com/pkg/errors"
     7  	"github.com/spf13/cobra"
     8  )
     9  
    10  // NoArgs validates args and returns an error if there are any args
    11  func NoArgs(cmd *cobra.Command, args []string) error {
    12  	if len(args) == 0 {
    13  		return nil
    14  	}
    15  
    16  	if cmd.HasSubCommands() {
    17  		return errors.Errorf("\n" + strings.TrimRight(cmd.UsageString(), "\n"))
    18  	}
    19  
    20  	return errors.Errorf(
    21  		"\"%s\" accepts no argument(s).\nSee '%s --help'.\n\nUsage:  %s\n\n%s",
    22  		cmd.CommandPath(),
    23  		cmd.CommandPath(),
    24  		cmd.UseLine(),
    25  		cmd.Short,
    26  	)
    27  }