| // Copyright 2018 The kubecfg 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 cmd |
| |
| import ( |
| "fmt" |
| "os" |
| "path/filepath" |
| "strings" |
| "unicode" |
| |
| "github.com/spf13/cobra" |
| ) |
| |
| const ( |
| flagShell = "shell" |
| ) |
| |
| func guessShell(path string) string { |
| ret := filepath.Base(path) |
| ret = strings.TrimRightFunc(ret, unicode.IsNumber) |
| return ret |
| } |
| |
| func init() { |
| RootCmd.AddCommand(completionCmd) |
| completionCmd.PersistentFlags().String(flagShell, "", "Shell variant for which to generate completions. Supported values are bash,zsh") |
| } |
| |
| var completionCmd = &cobra.Command{ |
| Use: "completion", |
| Short: "Generate shell completions for kubecfg", |
| Args: cobra.NoArgs, |
| RunE: func(cmd *cobra.Command, args []string) error { |
| flags := cmd.Flags() |
| |
| shell, err := flags.GetString(flagShell) |
| if err != nil { |
| return err |
| } |
| if shell == "" { |
| shell = guessShell(os.Getenv("SHELL")) |
| } |
| |
| out := cmd.OutOrStdout() |
| |
| switch shell { |
| case "bash": |
| if err := RootCmd.GenBashCompletion(out); err != nil { |
| return err |
| } |
| case "zsh": |
| if err := RootCmd.GenZshCompletion(out); err != nil { |
| return err |
| } |
| default: |
| return fmt.Errorf("Unknown shell %q, try --%s", shell, flagShell) |
| } |
| |
| return nil |
| }, |
| } |