From: daz <dooby@...10.karoo.co.uk>
Date: 2005-11-09T00:07:12+09:00
Subject: Re: Win32API help: PathFindOnPath()


Thanks for posting that tricky snippet, Nobu.

IIUC, the ENV['PATH'] prefix is /not/ required because environment
PATH is /always/ searched after any additional dirs added by us.

Instead of asking you for clarification, I'll assume (A) you don't
expect M$ API to do anything useful ;) or (B) you pasted it
from a similar example and forgot to remove it.


Test:
#---------------------
require 'Win32API'
PathFindOnPath = Win32API.new('shlwapi', 'PathFindOnPath', 'PP', 'L')

def path_fop(file, *xtra)
  buf = file + ("\0" * (260-file.length))  # buflen >= MAX_PATH(260)
  path = (xtra << nil).pack('p*')
  PathFindOnPath.call(buf, path).nonzero? and buf[/\A[^\0]+/]
end

puts path_fop('set_test.rb',  'C:\TEMP', 'C:\TEMP\clr')  #-> C:\TEMP\clr\set_test.rb
puts path_fop('set_test.rb',  'C:\TEMP'               )  #-> nil
puts path_fop('kernel32.dll', 'C:\TEMP', 'C:\TEMP\clr')  #-> C:\WINDOWS\SYSTEM\kernel32.dll
puts path_fop('kernel32.dll'                          )  #-> C:\WINDOWS\SYSTEM\kernel32.dll
#---------------------


daz