关于 rhai-fs

此crate为Rhai脚本语言提供文件系统访问。

使用方法

Cargo.toml

[dependencies]
rhai-fs = "0.1.2"

Rhai 脚本

// Create a file or open and truncate if file is already created
let file = open_file("example.txt");
let blob_buf = file.read_blob();
print("file contents: " + blob_buf);
blob_buf.write_utf8(0..=0x20, "foobar");
print("new file contents: " + blob_buf);
file.write(blob_buf);

Rust源代码

use rhai::{Engine, EvalAltResult};
use rhai::packages::Package;
use rhai_fs::FilesystemPackage;

fn main() -> Result<(), Box<EvalAltResult>> {
    // Create Rhai scripting engine
    let mut engine = Engine::new();

    // Create filesystem package and add the package into the engine
    let package = FilesystemPackage::new();
    package.register_into_engine(&mut engine);

    // Print the contents of the file `Cargo.toml`.
    let contents = engine.eval::<String>(r#"open_file("Cargo.toml", "r").read_string()"#)?;
    println!("{}", contents);

    Ok(())
}

功能