osakit

osakit aims to provide direct access to OSAKit Framework of macOS. Is uses ObjC-bindings to access OSAKit and run both AppleScript and JavaScript.

osakit is built using serde for input-output serialization/deserialization. Allows passing data to JavaScript/AppleScript functions and returns back the results. Input and output data are represented using Value from serde_json.

Comes with declare_script! macro (unstable) to simplify working with OSAKit Framework.

Source code on GitHub

Installation

Add osakit to the dependencies. Specify "full" feature if you want to use declare_script macro or "stable" feature to only include stable API.

[dependencies]
osakit = { version = "0.2", features = ["full"] }

Example using declare_script

use serde::{Deserialize, Serialize};
use osakit::declare_script;
use std::error::Error;

declare_script! {
    #[language(JavaScript)]
    #[source("
        function concat(x, y) {
            return x + y;
        }
                                                                                                       
        function multiply(a, b) {
            return a * b;
        }
                                                                                                       
        function current_user() {
            return {
                id: 21,
                name: \"root\"
            };
        }
    ")]
    pub MyJsScript {
        pub fn concat(x: &str, y: &str) -> String;
        pub fn multiply(a: i32, b: i32) -> i32;
        pub fn current_user() -> User;
    }
}
                                                                                                       
#[derive(Deserialize, Serialize, Debug, PartialEq, Eq)]
struct User {
    id: u16,
    name: String,
}

fn main() -> Result<(), Box<dyn Error>> {
    let script = MyJsScript::new()?;
    assert_eq!(
        script.multiply(3, 2)?,
        6
    );
    assert_eq!(
        script.concat("Hello, ", "World")?,
        "Hello, World"
    );
    assert_eq!(
        script.current_user()?,
        User {
            id: 21,
            name: "root".into()
        }
    );
    Ok(())
}

Example using Script

use osakit::{Language, Map, Script, Value, Number};
use std::error::Error;

fn main() -> Result<(), Box<dyn Error>> {
    let mut script = Script::new_from_source(Language::AppleScript, "
        on is_app_running()
            tell application \"Hopefully Non-Existing Application\" to running
        end is_app_running
        on concat(x, y)
            return x & y
        end concat
        return {id: 21, name: \"root\"}
    ");
    script.compile()?;
    assert_eq!(
        script.execute()?,
        Value::Object(Map::from_iter(vec![
            ("id".into(), Value::Number(Number::from(21))),
            ("name".into(), Value::String("root".into()))
        ]))
    );
    assert_eq!(
        script.execute_function("concat", vec![
            Value::String("Hello, ".into()),
            Value::String("World!".into())
        ])?,
        Value::String("Hello, World!".into())
    );
    assert_eq!(
        script.execute_function("is_app_running", vec![])?,
        Value::Bool(false)
    );

    Ok(())
}

Usage

See Full Documentation.

Limitations

• Due to limitations on OSAKit Framework-side integer values returned from JavaScript code are limited to i32 type.
• OSAKit calls must be made from the main thread, so, for example, the default cargo tests can fail, after stalling for 2 min, use a custom test harness like libtest-mimic with --test-threads=1. For convenience, there is a libtest-mimic-collect crate that provides a procedural macro for collecting tests for libtest-mimic crate.

Supported platforms

Due to the fact that OSAKit is Mac-specific, only macOS is supported.

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.