die method added

src/main.rs

@@ -1,29 +1,38 @@
-use std::time::Duration;
-
 use crossterm::{
     event::{poll, read, Event::Key, KeyCode, KeyEvent},
     terminal::{disable_raw_mode, enable_raw_mode},
 };
+use std::time::Duration;
 
 fn main() {
     let _ = enable_raw_mode();
     loop {
         let mut c: Option<KeyEvent> = None;
 
-        if let Ok(true) = poll(Duration::from_millis(100)) {
-            if let Ok(Key(key)) = read() {
-                c = Some(key);
+        match poll(Duration::from_millis(100)) {
+            Ok(true) => {
+                if let Ok(Key(key)) = read() {
+                    c = Some(key);
+                } else {
+                    die("Read error")
+                }
             }
+            Ok(false) => (),
+            Err(_) => die("Poll error"),
         }
 
         if let Some(c) = c {
             println!("{c:?}\r");
             if c.code == KeyCode::Char('q') {
                 break;
             }
-        } else {
-            println!("No input\r");
         }
     }
     let _ = disable_raw_mode();
 }
+
+fn die<S: Into<String>>(message: S) {
+    let _ = disable_raw_mode();
+    eprintln!("{}: {}", message.into(), std::io::Error::last_os_error());
+    std::process::exit(1);
+}