Shared via Rust Playground

playground.rs

fn main() {
    use std::str;
    use std::path::Path;
    
    println!("{:?}", "/tmp/bar/foo.txt".as_bytes());
    //let buf = "/tmp/bar/foo.txt".as_bytes();
    let buf = "C:/temp/foo/bar/foo.txt".as_bytes();
    let buf_string = str::from_utf8(buf).unwrap();
    
    //let path = Path::new("/tmp/foo/bar.txt");
    let path = Path::new(buf_string);
    let file = path.file_name();
    let extension = path.extension();
    let parent_dir = path.parent();
    
    println!("file: {:?} ext: {:?} parent:{:?}", file, extension, parent_dir);
    
    use std::path::PathBuf;

    let mut path = PathBuf::from("c:\\");
    path.push("windows");
    path.push("system32");
    path.set_extension("dll");
    println!("{:?}", path.into_os_string());
}

#[allow(dead_code)]
fn unicode() {
    let chars = ['日', '本', '国', '대', '한', '민'];
    for &c in &chars {
        let escaped = c.escape_unicode().collect::<String>();
        let charcode = u32::from_str_radix(&escaped[3..7], 16).unwrap();
        println!("{} -> {} -> {} -> {} -> {}",
                 c,
                 escaped,
                 charcode,
                 std::char::from_u32(charcode).unwrap(),
                 &escaped[3..7]);
    }

    println!("{}",
             std::char::from_u32(u32::from_str_radix("2691", 16).unwrap()).unwrap());
}