From: Luis Lavena <luislavena@...>
Date: 2011-01-31T10:05:06+09:00
Subject: [ruby-core:35008] Re: file_expand_path performing unneeded IO operations on native Windows

On Sun, Jan 30, 2011 at 9:39 PM, U.Nakamura <usa@garbagecollect.jp> wrote:
>
> Did you overlook lines from 3160-3164?
> This call of FindFirstFile() regularizes the filename.
> For instance, when the short filename is specified, this code
> converts it into a true long filename.
> This regularizing processing is chiefly needed from some security
> reasons.
>

FindFirstFile is a globing operation and require two API calls
(FindFirstFile and FindClose).

If normalization of filename is required, then GetLongPathName [1] can
be used instead, and is one API call.

[1] http://msdn.microsoft.com/en-us/library/aa364980(v=vs.85).aspx

-- 
Luis Lavena
AREA 17
-
Perfection in design is achieved not when there is nothing more to add,
but rather when there is nothing more to take away.
Antoine de Saint-Exup�ry