List content of a directory - listdir

• read_dir
• file_name
• canonicalize

fn main() {
    let args = std::env::args().collect::<Vec<String>>();
    if args.len() != 2 {
        eprintln!("Usage: {} PATH", &args[0]);
        std::process::exit(1);
    }
    let path = std::path::PathBuf::from(&args[1]);

    let filenames = path
        .read_dir()
        .unwrap()
        .map(|de| de.unwrap().file_name().to_str().unwrap().to_owned())
        .collect::<Vec<String>>();

    println!("{:?}", filenames);
    println!();

    let relative_pathes = path
        .read_dir()
        .unwrap()
        .map(|de| de.unwrap().path().as_os_str().to_str().unwrap().to_owned())
        .collect::<Vec<String>>();

    println!("{:?}", relative_pathes);
    println!();

    let absolute_pathes = path
        .read_dir()
        .unwrap()
        .map(|de| {
            de.unwrap()
                .path()
                .canonicalize()
                .unwrap()
                .as_os_str()
                .to_str()
                .unwrap()
                .to_owned()
        })
        .collect::<Vec<String>>();

    println!("{:?}", absolute_pathes);
}

["main.rs"]

["src/main.rs"]

["/home/gabor/work/rust.code-maven.com/slides/rust/examples/path/list-dir/src/main.rs"]