keymap 0.1.0

A library for defining and parsing input events from configuration
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61

# keymap-rs

[![crates.io](https://img.shields.io/crates/v/keymap.svg)](https://crates.io/crates/keymap)
[![Rust](https://github.com/rezigned/keymap-rs/actions/workflows/ci.yml/badge.svg)](https://github.com/rezigned/keymap-rs/actions/workflows/ci.yml)
[![License: MIT](https://img.shields.io/badge/License-MIT-brightgreen.svg)](https://opensource.org/licenses/MIT)

`keymap-rs` is a library for defining input events from configurations and mapping them to the terminal library's event. (such as [crossterm](https://github.com/crossterm-rs/crossterm) or [termion](https://gitlab.redox-os.org/redox-os/termion))

## Getting started

_Please check the [examples](examples/) directory for complete examples._

<details>
<summary>
Click to show <code>Cargo.toml</code>.
</summary>

```toml
[dependencies]
keymap = "0.1"
```
</details>

Let's started by defining a simple structure for mapping input key to `String`.

```rs
use keymap::{KeyMap, Key};
use serde::Deserialize;

#[derive(Deserialize)]
struct Config(pub HashMap<KeyMap, String>)

let config = r#"
up   = "Up"
down = "Down"
g    = "Top"
G    = "Bottom" # This is the same as `shift-g`
esc  = "Quit"
"
```

Then in your terminal library of choice (we'll be using [crossterm](https://github.com/crossterm-rs/crossterm) as an example). You can use any deserializer (e.g. `toml`, `json`, etc.) to deserialize a key from the configuration above into the terminal library's event (e.g. `crossterm::event::KeyEvent`).

```rs
let mapping: Config = toml::from_str(config).unwrap();

// Read input event
match read()? {
    Event::Key(key) => {
        // `Key::from` will convert `crossterm::event::KeyEvent` to `keymap::Key`
        if let Some(action) = config.0.get(&Key::from(key)) {
            match action {
                "Up" => println!("Move up!"),
                "Down" => println!("Move down!"),
                // ...
                "Quit" => break,
            }
        }
    }
}
```