use std::{env, fs};

fn main() {
    match run() {
        Ok(()) => {
            std::process::exit(0);
        }

        Err(e) => {
            eprintln!("Error: {}", e);
            std::process::exit(1);
        }
    };
}

fn run() -> eonlib::EonResult<()> {
    let args: Vec<String> = env::args().collect();
    let filename = args.get(1).ok_or("no filename given")?;
    let contents = fs::read_to_string(filename).map_err(|_| "error reading file")?;

    eonlib::run(&contents)?;

    Ok(())
}