From: Emmanuel Touzery <emmanuel.touzery@...>
Date: 2002-11-30T20:14:16+09:00
Subject: Re: root directory

Hello,

On Saturday 30 November 2002 01:23, nobu.nokada@softhome.net wrote:
> Emmanuel Touzery wrote:
> > I actually found File.split:
> > irb(main):001:0> File.split("/home")
> > ["/", "home"]
> > irb(main):002:0> File.split("/")
> > ["/", ""]
> > 
> > encouraging. if file.split(dir)[1] == "" it could mean it's root.
>
> No, File#split just returns File#dirname and File#basename, and
> File#basename returns "" when the path is ended with "/".
>
>   File.basename("/home/") => ""

well, if we remove the final "/" it will be ok then?
ok, what about this:

# will return "." if you ask dirUp(root)
def dirUp(path)
	# remove final "/" if there is one
	cleanPath = path.chomp(File::SEPARATOR)
	File.split(cleanPath)[0]
end

def root?(path)
	# remove final "/" if there is one
	cleanPath = path.chomp(File::SEPARATOR)
	File.split(cleanPath)[1] == ""
end

seems to work here under linux...

emmanuel