Display devices connected to a machine along with their bus listing

list_devices.rs

#!/usr/bin/env cargo
---
package.edition = "2024"
dependencies.nusb = { version = "0.2.1" }
---

use nusb::MaybeFuture;

fn main() {
    let mut bt = std::collections::BTreeMap::new();
    for dev in nusb::list_devices().wait().unwrap() {
        let mut s = format!("{}", dev.bus_id());
        for port in dev.port_chain() {
            s.push_str(&format!("/{port}"));
        }
        let v = format!(
            "{:04x}:{:04x}:{} @ {s} {} - {}",
            dev.vendor_id(),
            dev.product_id(),
            dev.serial_number().unwrap_or("<no serial>"),
            dev.manufacturer_string().unwrap_or("<no manufacturer>"),
            dev.product_string().unwrap_or("<no product>")
        );
        if bt.contains_key(&s) {
            println!("{v} appears twice!");
        }
        bt.insert(s, v);
    }
    for entry in bt.values() {
        println!("{entry}");
    }
}