fix(input): handle Ctrl+C via SIGINT signal instead of keypress

CHANGELOG.md

@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ### Fixed
 
+* Fix Ctrl+C handling to use SIGINT signal instead of keypress #491 - @chiranjeevi-max
 * Update CONTRIBUTING information #438 - @YJDoc2 @cyqsimon
 * Fix new clippy lint #457 - @cyqsimon
 * Apply new clippy lints #468 - @cyqsimon

Cargo.toml

@@ -31,6 +31,7 @@ chrono = "0.4"
 clap-verbosity-flag = "3.0.3"
 clap = { version = "4.5.41", features = ["derive"] }
 crossterm = "0.29.0"
+ctrlc = "3.4"
 derive_more = { version = "2.0.1", features = ["debug"] }
 eyre = "0.6.12"
 itertools = "0.14.0"

src/main.rs

@@ -96,6 +96,16 @@ where
     let cumulative_time = Arc::new(RwLock::new(Duration::new(0, 0)));
     let table_cycle_offset = Arc::new(AtomicUsize::new(0));
 
+    // handle SIGINT properly instead of as a keypress
+    // see https://github.com/imsnif/bandwhich/issues/487
+    {
+        let running = running.clone();
+        ctrlc::set_handler(move || {
+            running.store(false, Ordering::Release);
+        })
+        .expect("failed to set SIGINT handler");
+    }
+
     let mut active_threads = vec![];
 
     let terminal_events = os_input.terminal_events;
@@ -192,12 +202,6 @@ where
                             );
                         }
                         Event::Key(KeyEvent {
-                            modifiers: KeyModifiers::CONTROL,
-                            code: KeyCode::Char('c'),
-                            kind: KeyEventKind::Press,
-                            ..
-                        })
-                        | Event::Key(KeyEvent {
                             modifiers: KeyModifiers::NONE,
                             code: KeyCode::Char('q'),
                             kind: KeyEventKind::Press,

src/tests/cases/test_utils.rs

@@ -25,8 +25,8 @@ use crate::{
 pub fn sleep_and_quit_events(sleep_num: usize) -> Box<TerminalEvents> {
     let events = iter::repeat_n(None, sleep_num)
         .chain([Some(Event::Key(KeyEvent::new(
-            KeyCode::Char('c'),
-            KeyModifiers::CONTROL,
+            KeyCode::Char('q'),
+            KeyModifiers::NONE,
         )))])
         .collect();
     Box::new(TerminalEvents::new(events))
@@ -37,8 +37,8 @@ pub fn sleep_resize_and_quit_events(sleep_num: usize) -> Box<TerminalEvents> {
         .chain([
             Some(Event::Resize(100, 100)),
             Some(Event::Key(KeyEvent::new(
-                KeyCode::Char('c'),
-                KeyModifiers::CONTROL,
+                KeyCode::Char('q'),
+                KeyModifiers::NONE,
             ))),
         ])
         .collect();