From: mpurdy <mpurdy1973usergroups@...>
Date: 2011-04-09T10:45:23+09:00
Subject: Re: reading and writing to child process with streams in ruby

On Apr 8, 4:03 am, "Y. NOBUOKA" <nobu...@r-definition.com> wrote:
> Hi,
>
> Using IO#readpartial [1] instead of IO#read, you'll see the ruby
> script run as expected.
> However, I don't know if this is the best way or not.
>
> [1]http://www.ruby-doc.org/core/classes/IO.html#M000917
>
> ----------------------------------------------------------------------
> ruby script
> ----------------------------------------------------------------------
> require 'open3'
>
> cmd = "./myScript.bash"
> #cmd = "gpg --list-keys"
> begin
>   stdin, stdout, stderr = Open3.popen3 cmd
>
>   p stdin, stdout, stderr
>   done = 0
>   until done == 1
>     begin
>       # using IO#readpartial instead of IO#read
>       line = stdout.readpartial( 4096 )
>       puts "#{line}"
>       puts line.eql?("username: ")
>       if line.eql?("username: ")
>         puts "myuser"
>         stdin.write "myuser\n"
>         # using IO#readpartial instead of IO#read
>         line = stdout.readpartial( 4096 )
>         if line.eql?("password: ")
>           puts "mypassword"
>           stdin.write "mypassword\n"
>           done = 1
>         end
>         puts "im here!"
>       end
>     rescue => err
>       p err
>     end
>   end
> end
>
> --
> 信岡 裕也 (NOBUOKA Yuya)


thanx that did work; however, i after doing more research i agree this
is not the best way.  i am a c/c++, java/groovy guy...this ruby stuff
is all new to me; however, after day one; i like it:-)