pty-process

This crate adds a helper method to std::process::Command (and optionally its equivalent in various async frameworks) to allocate a pty to spawn the process into. This allows for manipulation of interactive programs.

The basic functionality is provided by the Command trait in this crate:

use pty_process::Command as _;

let mut cmd = std::process::Command::new("nethack");
let child = cmd.spawn_pty(Some(&pty_process::Size::new(24, 80))).unwrap();

The child instance returned by the call to spawn_pty is a thin wrapper around the Child struct associated with the Command module used. You can use it identically to how you would use the normal std::process::Child instance, but it also provides additional methods for interacting with the pty:

use std::io::Write as _;

child.pty().write_all(b"foo\n").unwrap();
child.resize_pty(&pty_process::Size::new(30, 100)).unwrap();
let status = child.wait().unwrap();

The available implementations are gated by features:

• backend-std: Add an implementation for std::process::Command. Enabled by default.
• backend-smol: Add an implementation for smol::process::Command.
• backend-async-std: Add an implementation for async_std::process::Command.
• backend-tokio: Add an implementation for tokio::process::Command.

Any number of backends may be enabled, depending on your needs.