custom-kube-scheduler/kubernetes-v1.15.4/pkg/kubectl/util/templates/command_groups.go

/*
Copyright 2016 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package templates

import (
	"github.com/spf13/cobra"
)

type CommandGroup struct {
	Message  string
	Commands []*cobra.Command
}

type CommandGroups []CommandGroup

func (g CommandGroups) Add(c *cobra.Command) {
	for _, group := range g {
		c.AddCommand(group.Commands...)
	}
}

func (g CommandGroups) Has(c *cobra.Command) bool {
	for _, group := range g {
		for _, command := range group.Commands {
			if command == c {
				return true
			}
		}
	}
	return false
}

func AddAdditionalCommands(g CommandGroups, message string, cmds []*cobra.Command) CommandGroups {
	group := CommandGroup{Message: message}
	for _, c := range cmds {
		// Don't show commands that have no short description
		if !g.Has(c) && len(c.Short) != 0 {
			group.Commands = append(group.Commands, c)
		}
	}
	if len(group.Commands) == 0 {
		return g
	}
	return append(g, group)
}