From: rio4ruby <Christopher.Kleckner@...>
Date: 2007-06-09T13:00:15+09:00
Subject: Re: Newb Wants to Better His File, Dir code

On Jun 8, 8:42 pm, Dan Zwell <dzw...@gmail.com> wrote:
> Michael T. Richter wrote:
> > On Sat, 2007-09-06 at 11:35 +0900, R.B.Love wrote:
>
> >> I've got code working to do what I want but I'm hoping there is a
> >> better way.  Mine seems clumsy.
>
> >> My goal is to search over all files,  identify all that are directories
> >> and then do something to each directory.  I don't need to go into
> >> directories recursively yet.
>
> >> The fact that Dir.foreach returns strings seems odd to me.  All advice
> >> appreciated.
>
> >> #!/usr/local/bin/ruby
>
> >> dpath = Dir.getwd
>
> >> Dir.foreach(dpath) do
> >>   |x|
> >>   ddir = File.join(dpath,x)
> >>   if File.directory?(ddir) && x != "." && x != ".." then
> >>     puts %x{du -sh #{x}}
> >>   end
> >> end
>
> > Try:
>
> >         dirs = Dir.entries(".").reject{|e| /\.{1,2}/ =~ e}.find_all{|e|
> >         File.directory? e}
>
> > At this point you have a list of directory names.  You can do whatever
> > you like to that list using .each(), .inject(), .collect(), etc.
>
> The above has a small bug: it rejects all hidden directories. If you
> want to block only ".." and ".", then change it to:
>
>         dirs = Dir.entries(".").reject{|e| /\.{1,2}$/ =~ e}.find_all{|e|
>                 File.directory? e}

This also has bug if you have a file name 'abc.'

Use rio.