From: Colin Bartlett <colinb2r@...>
Date: 2009-05-17T06:52:32+09:00
Subject: Re: Console output

Assuming I understand correctly what you want to do,
on a Windows system to show progress in a "console" box
I just repeatedly use (every second):
  print 13.chr + "text to show progress"

The short bit of code below demonstrates this. (I hope!)
So you may not need to use ncurses/curses.
(Although using those might make it easier to do more complicated things.
 I haven't used ncurses/curses.)

I haven't tried this on Linux, but as the basic idea
is to use "print" (to avoid a new-line)
and "13.chr" (to return to the start of the line
before displaying the new progress text)
I hope it would also work in Linux.


puts
puts 'simple (Windows) example to show putting text on same console line'
k = 13
k.times do | n |
  txt = 'count= ' + n.to_s
  print 13.chr + txt  ## CR = CarriageReturn
  sleep 0.5
end
puts '  *** final new line'
puts

If you - or anyone else - is interested in some more complicated code
then I'd be happy to post it.
(Basically I wrapped the "print 13.chr + txt" in an object
 which tested when the next display should be made,
 and which displayed the (formatted) time so far,
 and some other relevant information.)


On 5/16/09, Mk 27 <halfcountplus@intergate.com> wrote:
>> I have asked several people and I got the answer about using
>> ncurses/curses, however I haven't found any that works both on win32 and
>> linux, which I need.
>
> Totally new to ruby but from experience with C and perl I would say the
> answer to this question is tough luck.  You have to use an API (such as
> ncurses); if you cannot get that to work satisfactorily you will have to
> write seperate front-ends for each OS.
>
> If ruby/Tk is cross platform enough and it's possible you might as well
> go the GUI route; dealing with Tk is not much more complex than curses.
> A simple task like this one will be -- simple.
> --
> Posted via http://www.ruby-forum.com/.
>
>