OpenEuphoria

Re: walk_dir issue

• Posted by Derek Parnell <ddparnell at bigpond.com> Nov 24, 2004
• 532 views

Robert Craig wrote:
> 
> Juergen Luethje wrote:
> > That was not my question. My point was, that when we do e.g.
> > }}}
<eucode>
> > ? walk_dir("C:\\*.txt", routine_id("look_at"), 0)
> > </eucode>
{{{

> > 
> > -- as I wrote above -- then something happens, that Derek and I
> > consider a bug.
> 
> I'm not sure why this is a bug.
> You are supposed to specify a single directory for walk_dir()
> to walk. You are instead specifying a bunch of txt files.
> How can you complain about what happens next? Do you 
> want walk_dir() to analyse the path you give it, and spit out
> an error message?
> 

This is an example of the very helpful nature of RDS that is causing
me to go.

There is a bug. And this is it. The documentation states 
'This routine will "walk" through a directory with path name given by st.'

The 'st' I take is meant to be a directory (folder) name. Okay. That's
fine and I have no problem with that idea. 

So why does walk_dir() call my suppied routine with file names if I 
call it with a directory name of "c:\\*.txt" when there is no
directory called "*.txt" in my C: drive?

My first attempt to fix this issue was to add these lines at the beginning
of walk_dir() ...

    if path_name[$] != SLASH then
        path_name &= SLASH
    end if

thus forcing the 'st' parameter to be a directory specification.

However, this lead to another issue. It turns out that the dir()
function has a bug in it. dir() does not recognise that a specification
that ends in a SLASH is supposed to be a directory specification. I 
think that this is a bug because both DOS and Unix does not behave
this way.

If I do 
  ? dir("c:\\*.txt\\")

I get a set of entries in the returned sequence instead of getting a -1
returned.

This is what I get in DOS ...
======================
c:\temp>dir c:\*.txt\
The filename, directory name, or volume label syntax is incorrect.

c:\temp>dir c:\*.txt
 Volume in drive C is Local
 Volume Serial Number is AAAA-AAAA

 Directory of c:\

03/08/2004  06:42 PM             1,084 certreq.txt
06/11/2002  03:59 PM               818 contacts.txt
11/07/2003  06:21 PM               369 FREQ.TXT
08/04/2003  04:09 PM             1,608 KillList.txt
02/06/2004  03:19 PM         1,218,133 OPFLog_02_06_2004.txt
07/06/2004  12:35 PM         1,053,704 OPFLog_07_06_2004.txt
18/05/2004  01:33 PM               516 OPFLog_18_05_2004.txt
15/07/2003  06:59 PM                 5 RANDSEED.TXT
16/10/2001  02:01 PM                57 WINNTnwstatus.txt
======================

and this is what I get in Unix  ...

=========================
wilma:/u5/users/derekp> ls *.txt/
ls: *.txt/ not found: No such file or directory (error 2)
wilma:/u5/users/derekp> ls *.txt
sec.txt
tempsrc.txt
======================

Thus, I believe that dir() has a bug in it that prevents a simple fix 
for the bug in walk_dir() working.


Thank's for your support, Robert.

-- 
Derek Parnell
Melbourne, Australia