Sharprompt

Interactive command-line based application framework for C#

Features

• Multi-platform support
• Supports the popular prompts (Input / Password / Select / etc)
• Supports model-based prompts
• Validation of input value
• Automatic generation of data source using Enum type
• Customizable symbols and color schema
• Unicode support (Multi-byte characters and Emoji😀🎉)

Installation

Install-Package Sharprompt

dotnet add package Sharprompt

Quick start

// Simple input
var name = Prompt.Input<string>("What's your name?");
Console.WriteLine($"Hello, {name}!");

// Password input
var secret = Prompt.Password("Type new password", validators: new[] { Validators.Required(), Validators.MinLength(8) });
Console.WriteLine("Password OK");

// Confirmation
var answer = Prompt.Confirm("Are you ready?", defaultValue: true);
Console.WriteLine($"Your answer is {answer}");

Examples

The project in the folder Sharprompt.Example contains all the samples. Please check it.

dotnet run --project Sharprompt.Example

Prompt types

Input

Takes a generic type parameter and performs type conversion as appropriate.

var name = Prompt.Input<string>("What's your name?");
Console.WriteLine($"Hello, {name}!");

var number = Prompt.Input<int>("Enter any number");
Console.WriteLine($"Input = {number}");

Confirm

var answer = Prompt.Confirm("Are you ready?");
Console.WriteLine($"Your answer is {answer}");

Password

var secret = Prompt.Password("Type new password");
Console.WriteLine("Password OK");

Select

var city = Prompt.Select("Select your city", new[] { "Seattle", "London", "Tokyo" });
Console.WriteLine($"Hello, {city}!");

MultiSelect (Checkbox)

var cities = Prompt.MultiSelect("Which cities would you like to visit?", new[] { "Seattle", "London", "Tokyo", "New York", "Singapore", "Shanghai" }, pageSize: 3);
Console.WriteLine($"You picked {string.Join(", ", cities)}");

List

var value = Prompt.List<string>("Please add item(s)");
Console.WriteLine($"You picked {string.Join(", ", value)}");

Bind (Model-based prompts)

// Input model definition
public class MyFormModel
{
    [Display(Name = "What's your name?")]
    [Required]
    public string Name { get; set; }

    [Display(Name = "Type new password")]
    [DataType(DataType.Password)]
    [Required]
    [MinLength(8)]
    public string Password { get; set; }

    [Display(Name = "Select your city")]
    [Required]
    [InlineItems("Seattle", "London", "Tokyo")]
    public string City { get; set; }

    [Display(Name = "Are you ready?")]
    public bool? Ready { get; set; }
}

var result = Prompt.Bind<MyFormModel>();

Configuration

Symbols

Prompt.Symbols.Prompt = new Symbol("🤔", "?");
Prompt.Symbols.Done = new Symbol("😎", "V");
Prompt.Symbols.Error = new Symbol("😱", ">>");

var name = Prompt.Input<string>("What's your name?");
Console.WriteLine($"Hello, {name}!");

Color schema

Prompt.ColorSchema.Answer = ConsoleColor.DarkRed;
Prompt.ColorSchema.Select = ConsoleColor.DarkCyan;

var name = Prompt.Input<string>("What's your name?");
Console.WriteLine($"Hello, {name}!");

Cancellation support

// Throw an exception when canceling with Ctrl-C
Prompt.ThrowExceptionOnCancel = true;

try
{
    var name = Prompt.Input<string>("What's your name?");
    Console.WriteLine($"Hello, {name}!");
}
catch (PromptCanceledException ex)
{
    Console.WriteLine("Prompt canceled");
}

Validators

Sharprompt provides built-in validators that can be used with the validators parameter.

var secret = Prompt.Password("Type new password", validators: new[] { Validators.Required(), Validators.MinLength(8) });

Validator	Description
Validators.Required()	Ensures the input is not empty
Validators.MinLength(length)	Ensures the input has at least the specified number of characters
Validators.MaxLength(length)	Ensures the input does not exceed the specified number of characters
Validators.RegularExpression(pattern)	Ensures the input matches the specified regular expression

Additional features

Enum type support

public enum MyEnum
{
    [Display(Name = "First value")]
    First,
    [Display(Name = "Second value")]
    Second,
    [Display(Name = "Third value")]
    Third
}

var value = Prompt.Select<MyEnum>("Select enum value");
Console.WriteLine($"You selected {value}");

Unicode support

// Prefer UTF-8 as the output encoding
Console.OutputEncoding = Encoding.UTF8;

var name = Prompt.Input<string>("What's your name?");
Console.WriteLine($"Hello, {name}!");

Fluent interface support

using Sharprompt.Fluent;

// Use fluent interface
var city = Prompt.Select<string>(o => o.WithMessage("Select your city")
                                       .WithItems(new[] { "Seattle", "London", "Tokyo" })
                                       .WithDefaultValue("Seattle"));

Supported platforms

• Windows
  • Command Prompt
  • PowerShell
  • Windows Terminal
• Linux (Ubuntu, etc)
  • Windows Terminal (WSL 2)
• macOS
  • Terminal.app

License

This project is licensed under the MIT License