gospt/cmd/completion.go

package cmd

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
)

var completionCmd = &cobra.Command{
	Hidden: true,
	Use:    "completion [bash|zsh|fish|powershell]",
	Short:  "Generate completion script",
	Long: fmt.Sprintf(`To load completions:

Bash:

  $ source <(%[1]s completion bash)

  # To load completions for each session, execute once:
  # Linux:
  $ %[1]s completion bash > /etc/bash_completion.d/%[1]s
  # macOS:
  $ %[1]s completion bash > $(brew --prefix)/etc/bash_completion.d/%[1]s

Zsh:

  # If shell completion is not already enabled in your environment,
  # you will need to enable it.  You can execute the following once:

  $ echo "autoload -U compinit; compinit" >> ~/.zshrc

  # To load completions for each session, execute once:
  $ %[1]s completion zsh > "${fpath[1]}/_%[1]s"

  # You will need to start a new shell for this setup to take effect.

fish:

  $ %[1]s completion fish | source

  # To load completions for each session, execute once:
  $ %[1]s completion fish > ~/.config/fish/completions/%[1]s.fish
`, rootCmd.Name()),
	DisableFlagsInUseLine: true,
	ValidArgs:             []string{"bash", "zsh", "fish"},
	Args:                  cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
	Run: func(cmd *cobra.Command, args []string) {
		switch args[0] {
		case "bash":
			rootCmd.GenBashCompletion(os.Stdout)
		case "zsh":
			rootCmd.GenZshCompletion(os.Stdout)
		case "fish":
			rootCmd.GenFishCompletion(os.Stdout, true)
		}
	},
}

func init() {
	rootCmd.AddCommand(completionCmd)
}