From: Zakaria <zak_mail@...>
Date: 2001-09-01T22:12:56+09:00
Subject: [ruby-talk:20666] Re: Relative path

Assalamu'alaikum wr. wb.

"Gardian, Milan" wrote:
 
> Hello,
 
> what is the shortest & quickest way of finding a relative path between path1
> and path2 in Ruby? (either universal or Win32 platform-specific)...
 
> Thank you for your help!

Here's the UNIX version, feel free to make the Windows version.
---------------------------------------------------
#!/usr/bin/ruby -w
def strip_common_dir(path1, path2)
  if path1+"\t"+path2 =~ %r{^(.*/)(.*?)\t\1(.*)$}
    path1, path2 = $2, $3
  end
  return path1, path2
end

def rel_path(path1, path2)
  path1, path2 = strip_common_dir path1, path2
  return ('../' * path1.count('/')) + path2
end

def rel_path_dir(dir1, dir2)
  dir1 += '/' if dir1[-1,1] != '/'
  dir2 += '/' if dir2[-1,1] != '/'
  return rel_path dir1, dir2
end

def test_path(path1, path2)
  puts "Rel path of '#{path1}' and '#{path2}' is '#{rel_path_dir path1,
path2}'"
end

path1 = '/temp/foo'
path2 = '/temp/foo/dir/another_dir/'
path3 = '/special_dir'

test_path path1, path2 
test_path path1, path3 
test_path path2, path1 
test_path path2, path3 
test_path path3, path1 
test_path path3, path2 
---------------------------------------------------

> Cheers,

>         Milan

Wassallam,


-- Zakaria                         
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