promptly

A simple, opinionated prompting library

Features include:

• Re-prompt until valid
• Prompts for several types, and extensible
• Sane handling of escapes via rustyline
• Path completion when prompting for paths
• Dead simple to use. Perhaps too simple.

Usage

Simply call prompt or prompt_default to prompt for any Promptable type:

• prompt(msg) - prompt until input can be parsed as the inferred return type. Re-prompts for empty string input unless type is an Option<T>
• prompt_default(msg, default) - prompt until input can be parsed as the inferred return type. Uses default value if input is empty string.

```rust use promptly::{prompt, prompt_default};

// Prompt until a non-empty string is provided let name: String = prompt("Enter your name");

// Prompt for other FromStr types let age: u32 = prompt("Enter your age");

// Prompt for optional paths with path completion. Returns None if empty input. let photo: Option = prompt("Enter a path to a profile picture");

// Prompt Y/n with a default value when input is empty let fallback = prompt_default("Would you like to receive marketing emails", true);

// Prompt for a url using the url crate (requires either 'nightly' or 'url' feature) let website: Url = prompt("Enter a website URL"); ```

More...

The API surface of this crate is opinionated and experimental, but open to fresh ideas. Some additional bits hiding under the surface:

• Promptable trait provides implementations that prompt for many common types, and provides a way to add support for additional types.
• Prompter struct provides lower-level control that powers the friendly readline experience. It's especially unclear how this type will evolve.