<p align="center">
<img alt="Termion logo" src="https://rawgit.com/redox-os/termion/master/logo.svg" />
</p>
[](https://travis-ci.org/redox-os/termion) [](https://crates.io/crates/termion) | [Documentation](https://docs.rs/termion) | [Examples](https://github.com/redox-os/termion/tree/master/examples) | [Changelog](https://github.com/redox-os/termion/tree/master/CHANGELOG.md) | [Tutorial](http://ticki.github.io/blog/making-terminal-applications-in-rust-with-termion/)
**Termion** is a pure Rust, bindless library for low-level handling, manipulating
and reading information about terminals. This provides a full-featured
alternative to Termbox.
Termion aims to be simple and yet expressive. It is bindless, meaning that it
is not a front-end to some other library (e.g., ncurses or termbox), but a
standalone library directly talking to the TTY.
Termion is quite convenient, due to its complete coverage of essential TTY
features, providing one consistent API. Termion is rather low-level containing
only abstraction aligned with what actually happens behind the scenes. For
something more high-level, refer to inquirer-rs, which uses Termion as backend.
Termion generates escapes and API calls for the user. This makes it a whole lot
cleaner to use escapes.
Supports Redox, Mac OS X, BSD, and Linux (or, in general, ANSI terminals).
## A note on stability
This crate is stable.
## Cargo.toml
```toml
[dependencies]
termion = "*"
```
## 2.0.0 to 3.0.0 guide
Changes are only required if you were using `IntoRawMode` on generic terminals `W: Write`. Now, terminal
is also required to implement [`AsFd` trait][AsFd-trait]. So replacing generic bounds with `W: Write + AsFd`
should be sufficient.
[AsFd-trait]: https://doc.rust-lang.org/std/os/fd/trait.AsFd.html
## 1.0.0 to 2.0.0 guide
| `AlternativeScreen::from(x)` | `x.into_alternative_screen()`
## 0.1.0 to 1.0.0 guide
This sample table gives an idea of how to go about converting to the new major
version of Termion.
| `use termion::IntoRawMode` | `use termion::raw::IntoRawMode`
| `use termion::TermRead` | `use termion::input::TermRead`
| `stdout.color(color::Red);` | `write!(stdout, "{}", color::Fg(color::Red));`
| `stdout.color_bg(color::Red);` | `write!(stdout, "{}", color::Bg(color::Red));`
| `stdout.goto(x, y);` | `write!(stdout, "{}", cursor::Goto(x, y));`
| `color::rgb(r, g, b);` | `color::Rgb(r, g, b)` (truecolor)
| `x.with_mouse()` | `MouseTerminal::from(x)`
## Features
- Raw mode.
- TrueColor.
- 256-color mode.
- Cursor movement.
- Text formatting.
- Console size.
- TTY-only stream.
- Control sequences.
- Termios control.
- Password input.
- Redox support.
- Safe `isatty` wrapper.
- Panic-free error handling.
- Special keys events (modifiers, special keys, etc.).
- Allocation-free.
- Asynchronous key events.
- Mouse input.
- Carefully tested.
- Detailed documentation on every item.
and much more.
## Examples
### Style and colors.
```rust
extern crate termion;
use termion::{color, style};
use std::io;
fn main() {
println!("{}Red", color::Fg(color::Red));
println!("{}Blue", color::Fg(color::Blue));
println!("{}Blue'n'Bold{}", style::Bold, style::Reset);
println!("{}Just plain italic", style::Italic);
}
```
### Moving the cursor
```rust
extern crate termion;
fn main() {
print!("{}{}Stuff", termion::clear::All, termion::cursor::Goto(1, 1));
}
```
### Mouse
```rust
extern crate termion;
use termion::event::{Key, Event, MouseEvent};
use termion::input::{TermRead, MouseTerminal};
use termion::raw::IntoRawMode;
use std::io::{Write, stdout, stdin};
fn main() {
let stdin = stdin();
let mut stdout = MouseTerminal::from(stdout().into_raw_mode().unwrap());
write!(stdout, "{}{}q to exit. Click, click, click!", termion::clear::All, termion::cursor::Goto(1, 1)).unwrap();
stdout.flush().unwrap();
for c in stdin.events() {
let evt = c.unwrap();
match evt {
Event::Key(Key::Char('q')) => break,
Event::Mouse(me) => {
match me {
MouseEvent::Press(_, x, y) => {
write!(stdout, "{}x", termion::cursor::Goto(x, y)).unwrap();
},
_ => (),
}
}
_ => {}
}
stdout.flush().unwrap();
}
}
```
### Read a password
```rust
extern crate termion;
use termion::input::TermRead;
use std::io::{Write, stdout, stdin};
fn main() {
let stdout = stdout();
let mut stdout = stdout.lock();
let stdin = stdin();
let mut stdin = stdin.lock();
stdout.write_all(b"password: ").unwrap();
stdout.flush().unwrap();
let pass = stdin.read_passwd(&mut stdout);
if let Ok(Some(pass)) = pass {
stdout.write_all(pass.as_bytes()).unwrap();
stdout.write_all(b"\n").unwrap();
} else {
stdout.write_all(b"Error\n").unwrap();
}
}
```
## Usage
See `examples/`, and the documentation, which can be rendered using `cargo doc`.
For a more complete example, see [a minesweeper implementation](https://github.com/redox-os/games-for-redox/blob/master/src/minesweeper/main.rs), that I made for Redox using termion.
<img src="image.png" width="200">
## License
MIT/X11.
