Capturing Ctrl-c in ruby

Question

I was passed a long running legacy ruby program, which has numerous occurrences of

begin
  #dosomething
rescue Exception => e
  #halt the exception\'s pr         


        

Answer 1

If you can wrap your whole program you can do something like the following:

 trap("SIGINT") { throw :ctrl_c }

 catch :ctrl_c do
 begin
    sleep(10)
 rescue Exception
    puts "Not printed"
 end
 end

This basically has CtrlC use catch/throw instead of exception handling, so unless the existing code already has a catch :ctrl_c in it, it should be fine.

Alternatively you can do a trap("SIGINT") { exit! }. exit! exits immediately, it does not raise an exception so the code can't accidentally catch it.