From: Richard Kilmer <rich@...>
Date: 2004-03-26T01:46:24+09:00
Subject: Re: [ANN] session-2.1.5

This totally kicks butt!

Would you consider making a RubyForge project out of it?

I am definitely going to use this here at DARPA.

best,

Rich
On Mar 25, 2004, at 11:34 AM, Ara.T.Howard wrote:

>
>
> http://www.codeforpeople.com/lib/ruby/session/
>
>
> 2.1.5:
>   - added Session.use_spawn=, AbstractSession.use_spawn=, and an  
> :use_session=>
>     option to AbstractSession#initialize.  if any of them are set the  
> code uses
>     Spawn::spawn to create external processes instead of Open3::popen3.
>     Spawn::spawn uses named pipes (fifos) for IPC instead of forking  
> and pipes.
>     the fork used in popen3 can cause strange behaviour with  
> multi-threaded apps
>     (like a tk app).  see source for details
>
>
> NAME
>
>   Session
>     ::Sh
>     ::Bash
>     ::Csh
>     ::Tcsh
>     ::Shell
>     ::IDL
>
> SYNOPSIS
>
>   Session::* offers a set of class for driving external progams via  
> pipes.  It
>   offers a significant abstraction over Open3::popen since  
> stdout/stderr can
>   be processed individually for each command.  Additionally the  
> exit_status of
>   each command is made available.  eg.
>
>     bash = Session::Bash.new
>
>     stdout, stderr = bash.execute 'ls'
>
>
>   or
>
>     bash = Session::Bash.new
>
>     stdout, stderr = StringIO.new, StringIO.new
>
>     bash.execute 'ls', :stdout => stdout, :stderr => stderr
>     exit_status = bash.exit_status
>
>   or
>
>     bash = Session::Bash.new
>
>     # output is passed to the block as it is produced!
>     bash.execute( 'long_running_command.exe' ) do |out, err|
>       logger << out if out
>       elogger << err if err
>     end
>
> SAMPLES
>
>   see samples/*
>
>
> AUTHOR
>
>   ara.t.howard@noaa.gov
>
>
> -a
> --  
> ======================================================================= 
> ========
> | EMAIL   :: Ara [dot] T [dot] Howard [at] noaa [dot] gov
> | PHONE   :: 303.497.6469
> | ADDRESS :: E/GC2 325 Broadway, Boulder, CO 80305-3328
> | URL     :: http://www.ngdc.noaa.gov/stp/
> | TRY     :: for l in ruby perl;do $l -e "print  
> \"\x3a\x2d\x29\x0a\"";done
> ======================================================================= 
> ========
>
>
>