29 lines
1,008 B
Rust
29 lines
1,008 B
Rust
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//! An arg parser/prompt shared between the `evtest*` examples. Also demonstrates opening/finding
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//! connected devices.
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use std::io::prelude::*;
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pub fn pick_device() -> evdev::Device {
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let mut args = std::env::args_os();
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args.next();
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if let Some(dev_file) = args.next() {
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evdev::Device::open(dev_file).unwrap()
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} else {
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let mut devices = evdev::enumerate().collect::<Vec<_>>();
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// readdir returns them in reverse order from their eventN names for some reason
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devices.reverse();
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for (i, d) in devices.iter().enumerate() {
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println!("{}: {}", i, d.name().unwrap_or("Unnamed device"));
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}
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print!("Select the device [0-{}]: ", devices.len());
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let _ = std::io::stdout().flush();
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let mut chosen = String::new();
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std::io::stdin().read_line(&mut chosen).unwrap();
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let n = chosen.trim().parse::<usize>().unwrap();
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devices.into_iter().nth(n).unwrap()
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}
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}
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#[allow(dead_code)]
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fn main() {}
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