How to catch SIGINT for current in Dart?

Question

How can Ctrl + C or SIGINT get into the Dart program for the current process?

Something similar to Node:

process.on('SIGINT', function() { // do stuff }); 

Answer 1

I found the following test code in Unified Diff: tests / standalone / io / signals_test_script.dart

 import "dart:io"; void main(args) { int usr1Count = int.parse(args[0]); int usr2Count = int.parse(args[1]); var sub1; var sub2; void check() { if (usr1Count < 0 || usr2Count < 0) exit(1); if (usr1Count == 0 && usr2Count == 0) { sub1.cancel(); sub2.cancel(); } print("ready"); } sub1 = ProcessSignal.SIGUSR1.watch().listen((signal) { if (signal != ProcessSignal.SIGUSR1) exit(1); usr1Count--; check(); }); sub2 = ProcessSignal.SIGUSR2.watch().listen((signal) { if (signal != ProcessSignal.SIGUSR2) exit(1); usr2Count--; check(); }); check(); }