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From:	"BB" <canofspam AT att DOT net>
Subject:	Re: cygpath bug?
Date:	Fri, 13 Jun 2003 14:20:12 -0500
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References:	<bcan6d$67i$1 AT main DOT gmane DOT org> <bcct45$4ob$1 AT main DOT gmane DOT org>
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"Shankar Unni" <shankar AT cotagesoft DOT com> wrote in message
news:bcct45$4ob$1 AT main DOT gmane DOT org...
> BB wrote:
>
> > Shouldn't GetShortPathName() == 0 always cause the get_short_name()
> > function to fail?
>
> I would sincerely hope not. I see no reason why cygpath conversion has
> to be tied to the existence of files. We often need to use cygpath to
> convert between formats for files which we are about to create.

I think it should fail if GetShortPathName() returns 0.  A 0 return value
means
GetShortPathName() failed.  If it returns a 0, it did not modify the
destination
buffer passed to it.  cygpath allocates 1 byte and does a strcpy of the
uninitialized
buffer to that byte.  If that's not a bug, I don't know what is.

> e.g.
>
>    notepad `cygpath -d "/cygdrive/c/some nonexistent file.txt"`
>
> will make notepad create that file for me.
>
Try your example, I don't think it will work.  Maybe you meant to
use the '-w' option.  It will work.

Your example does not work on my machine (XP).  Using the cygpath
-d option causes GetShortPathName() to be called.  It returns 0 and
sets the error to ERROR_PATH_NOT_FOUND.  Using the -w option
is a different story.  It will simply replace the "/cygdrive/c/" with "c:\".
I
don't think it calls a windows api to do this.

So in effect, the -d option causes a validation of the path and filename.
It cannot be used to convert an invalid directory name to a short filename.





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