src/builtins.rs


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use std::path::Path;

pub fn cd(args: std::str::SplitWhitespace) -> std::path::PathBuf {
    let new_dir = args.peekable().peek().map_or("/", |x| *x);

    let root = match std::fs::canonicalize(Path::new(new_dir)) {
        Ok(p) => p,
        Err(_) => Path::new("/").to_path_buf(),
    };

    if let Err(e) = std::env::set_current_dir(&root) {
        eprintln!("{}", e);
    }

    root.to_path_buf()
}