User input timeout

ruby-talk
1

i'v bin programming for about 2 week now and just about completed
http://pine.fm/LearnToProgram/

but for a change of pace i started something of my own but i cant seem
to get my program to wait X-seconds for user input.

basicly what i got is:

input= "empty"
input= gets.chomp

if input == "empty"
  puts "no input"
else
  puts input
end

all i want it to do is wait like 10 seconds and if there has bin no user
input it should just continue with input= "empty"

i feel like i'm missing something real simple

thnx in advance

-Bakakyoo-

···

--
Posted via http://www.ruby-forum.com/.

2

results = select [STDIN], nil, nil, X-seconds
if !results
  puts "no input"
else
  puts gets.chomp
end

···

On Fri, Mar 26, 2010 at 5:17 PM, Rico Knoop <jointgek@gmail.com> wrote:

i'v bin programming for about 2 week now and just about completed
http://pine.fm/LearnToProgram/

but for a change of pace i started something of my own but i cant seem
to get my program to wait X-seconds for user input.

basicly what i got is:

input= "empty"
input= gets.chomp

if input == "empty"
puts "no input"
else
puts input
end

all i want it to do is wait like 10 seconds and if there has bin no user
input it should just continue with input= "empty"

i feel like i'm missing something real simple

thnx in advance

-Bakakyoo-
--
Posted via http://www.ruby-forum.com/\.

3

Timeout is in the standard lib:

require 'timeout'

begin
        answer = Timeout::timeout(5) do
                gets
        end
rescue Timeout::Error
        answer = "empty"
end

puts answer

Jesus.

···

On Fri, Mar 26, 2010 at 10:17 AM, Rico Knoop <jointgek@gmail.com> wrote:

i'v bin programming for about 2 week now and just about completed
http://pine.fm/LearnToProgram/

but for a change of pace i started something of my own but i cant seem
to get my program to wait X-seconds for user input.

basicly what i got is:

input= "empty"
input= gets.chomp

if input == "empty"
puts "no input"
else
puts input
end

all i want it to do is wait like 10 seconds and if there has bin no user
input it should just continue with input= "empty"

i feel like i'm missing something real simple

4

Jesús Gabriel y Galán wrote:

···

On Fri, Mar 26, 2010 at 10:17 AM, Rico Knoop <jointgek@gmail.com> wrote:

if input == "empty"
�puts "no input"
else
�puts input
end

all i want it to do is wait like 10 seconds and if there has bin no user
input it should just continue with input= "empty"

i feel like i'm missing something real simple

Timeout is in the standard lib:

require 'timeout'

begin
        answer = Timeout::timeout(5) do
                gets
        end
rescue Timeout::Error
        answer = "empty"
end

puts answer

Jesus.

it didn't seem to work,
it just kept waiting for me to input something.
i even tried to run just that code.
its still blinking, waiting for input on the background.

am i doing something wrong?
--
Posted via http://www.ruby-forum.com/\.

5

It might depend on which operating system and/or Ruby version you are using.
I tried the code underneath on Windows Vista, using the Ruby Windows versions,
and Ruby. It works for me using Ruby 1.9 for Windows.
But using Ruby 1.8.6 and using the JRuby 1.8 equivalent seemed to work,
or rather not work, in the way you described in your latest post.

Colin Bartlett

···

On Fri, Mar 26, 2010 at 11:59 AM, Rico Knoop <jointgek@gmail.com> wrote:

it didn't seem to work,
it just kept waiting for me to input something.
i even tried to run just that code.
its still blinking, waiting for input on the background.

am i doing something wrong?

6

[* same post as just made, but this time I've remembered to add the code *]

it didn't seem to work,
it just kept waiting for me to input something.
i even tried to run just that code.
its still blinking, waiting for input on the background.

am i doing something wrong?

It might depend on which operating system and/or Ruby version you are using.
I tried the code underneath on Windows Vista, using the Ruby Windows versions,
and Ruby. It works for me using Ruby 1.9 for Windows.
But using Ruby 1.8.6 and using the JRuby 1.8 equivalent seemed to work,
or rather not work, in the way you described in your latest post.

Colin Bartlett

require "timeout"
def gets_timeout( prompt, secs )
  puts
  print prompt + "[timeout=#{secs}secs]: "
  Timeout::timeout( secs ) { gets }
rescue Timeout::Error
  puts "*timeout"
  nil # return nil if timeout
end

rr = gets_timeout "Do not input. Wait for timeout. ", 5
p rr #=> nil
rr = gets_timeout "Input something before timeout: ", 10
p rr #=> "something\n"

···

On Fri, Mar 26, 2010 at 11:59 AM, Rico Knoop <jointgek@gmail.com> wrote:

7

I tested my version in Ubuntu and it worked fine.

Jesus.

···

On Fri, Mar 26, 2010 at 4:23 PM, Colin Bartlett <colinb2r@googlemail.com> wrote:

On Fri, Mar 26, 2010 at 11:59 AM, Rico Knoop <jointgek@gmail.com> wrote:

it didn't seem to work,
it just kept waiting for me to input something.
i even tried to run just that code.
its still blinking, waiting for input on the background.

am i doing something wrong?

It might depend on which operating system and/or Ruby version you are using.
I tried the code underneath on Windows Vista, using the Ruby Windows versions,
and Ruby. It works for me using Ruby 1.9 for Windows.
But using Ruby 1.8.6 and using the JRuby 1.8 equivalent seemed to work,
or rather not work, in the way you described in your latest post.

8

At least for JRuby, we can't do a proper select on stdio because the
JVM does not provide such a capability. So timeout can't interrupt
stdio.

- Charlie

···

On Fri, Mar 26, 2010 at 10:23 AM, Colin Bartlett <colinb2r@googlemail.com> wrote:

It might depend on which operating system and/or Ruby version you are using.
I tried the code underneath on Windows Vista, using the Ruby Windows versions,
and Ruby. It works for me using Ruby 1.9 for Windows.
But using Ruby 1.8.6 and using the JRuby 1.8 equivalent seemed to work,
or rather not work, in the way you described in your latest post.