cmd/portr/cmd/completion.go

// `portr completion` — generate shell completion scripts.
//
// See mercemay.top/src/portr/ for context.
package cmd

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
)

var completionCmd = &cobra.Command{
	Use:       "completion [bash|zsh|fish|powershell]",
	Short:     "Generate shell completion scripts",
	Args:      cobra.MatchAll(cobra.ExactArgs(1), cobra.OnlyValidArgs),
	ValidArgs: []string{"bash", "zsh", "fish", "powershell"},
	Long: `To load completions in the current zsh session:

    source <(portr completion zsh)

Write to disk (bash example):

    portr completion bash > /etc/bash_completion.d/portr
`,
	RunE: func(cmd *cobra.Command, args []string) error {
		switch args[0] {
		case "bash":
			return Root.GenBashCompletion(os.Stdout)
		case "zsh":
			return Root.GenZshCompletion(os.Stdout)
		case "fish":
			return Root.GenFishCompletion(os.Stdout, true)
		case "powershell":
			return Root.GenPowerShellCompletionWithDesc(os.Stdout)
		default:
			return fmt.Errorf("completion: unknown shell %q", args[0])
		}
	},
}