From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: File name wild cards
Date: Thu, 16 Aug 2018 09:47:31 +0200
Date: 2018-08-16T09:47:31+02:00 [thread overview]
Message-ID: <pl3a6i$15s1$1@gioia.aioe.org> (raw)
In-Reply-To: 0001HW.2124C8650B16B24770000F8CF2CF@news.individual.net
On 2018-08-15 22:45, Bill Findlay wrote:
> Can anyone point me to a portable way of doing wildcard filename lookups?
>
> In Ada.Directories we have;
>
>> type Search_Type is limited private;
>> procedure Start_Search (Search: in out Search_Type;
>> Directory: in String;
>> Pattern: in String;
>> Filter: in Filter_Type := (others => True));
>
> etc
> But the interpretation of Pattern is implementation defined.
> Worse, I cannot find any interpretation in the GNAT documentation.
AFAIK Ada.Directories is non-portable anyway. I hope this will be fixed
in Ada 2020 in a way that would abstract the file system as a set of
nice ADTs.
I do portable file lookup this admittedly ugly way:
1. I use Ada bindings to GLib. GLib has portable directory walk, which
maintains UTF-8 names regardless the underlying OS:
http://www.dmitry-kazakov.de/ada/gtkada_contributions.htm#5
Dir_Open, Dir_Read_Name etc.
2. I check names for artifacts like "." and ".." and translate \ to /.
3. I use wild-card matcher for UTF-8 encoded strings:
http://www.dmitry-kazakov.de/ada/strings_edit.htm#7.5
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2018-08-16 7:47 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-15 20:45 File name wild cards Bill Findlay
2018-08-16 7:46 ` Jeffrey R. Carter
2018-08-16 14:26 ` Bill Findlay
2018-08-16 7:47 ` Dmitry A. Kazakov [this message]
2018-08-16 14:29 ` Bill Findlay
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