From: Brian Candler <B.Candler@...>
Date: 2007-02-08T21:43:20+09:00
Subject: Re: method to get (Linux) user home path

On Thu, Feb 08, 2007 at 07:52:41PM +0900, Erik Veenstra wrote:
> These are my personal implementations of Dir.home and Dir.temp.

ruby has the latter included as standard.

require 'tmpdir'
puts Dir.tmpdir

Here's the implementation from tmpdir.rb:

  ##
  # Returns the operating system's temporary file path.

  def Dir::tmpdir
    tmp = '.'
    if $SAFE > 0
      tmp = @@systmpdir
    else
      for dir in [ENV['TMPDIR'], ENV['TMP'], ENV['TEMP'],
                  ENV['USERPROFILE'], @@systmpdir, '/tmp']
        if dir and File.directory?(dir) and File.writable?(dir)
          tmp = dir
          break
        end
      end
    end
    File.expand_path(tmp)
  end