github.com/hierynomus/promptui

promptui

Interactive prompt for command-line applications.

We built Promptui because we wanted to make it easy and fun to explore cloud services with manifold cli.

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Overview

Promptui is a library providing a simple interface to create command-line prompts for go. It can be easily integrated into spf13/cobra, urfave/cli or any cli go application.

Promptui has two main input modes:

• Prompt provides a single line for user input. Prompt supports optional live validation, confirmation and masking the input.

• Select provides a list of options to choose from. Select supports pagination, search, detailed view and custom templates.

For a full list of options check GoDoc.

Basic Usage

Prompt

package main

import (
	"errors"
	"fmt"
	"strconv"

	"github.com/manifoldco/promptui"
)

func main() {
	validate := func(input string) error {
		_, err := strconv.ParseFloat(input, 64)
		if err != nil {
			return errors.New("Invalid number")
		}
		return nil
	}

	prompt := promptui.Prompt{
		Label:    "Number",
		Validate: validate,
	}

	result, err := prompt.Run()

	if err != nil {
		fmt.Printf("Prompt failed %v\n", err)
		return
	}

	fmt.Printf("You choose %q\n", result)
}

Select

package main

import (
	"fmt"

	"github.com/manifoldco/promptui"
)

func main() {
	prompt := promptui.Select{
		Label: "Select Day",
		Items: []string{"Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
			"Saturday", "Sunday"},
	}

	_, result, err := prompt.Run()

	if err != nil {
		fmt.Printf("Prompt failed %v\n", err)
		return
	}

	fmt.Printf("You choose %q\n", result)
}

More Examples

See full list of examples