From: <sten.kristian.ivarsson@gmail.com>
To: <moss@cs.umass.edu>, "'The Cygwin Mailing List'" <cygwin@cygwin.com>
Subject: Sv: Sv: Sv: Sv: Sv: Sv: g++ and c++17 filesystem
Date: Wed, 25 Nov 2020 09:02:10 +0100 [thread overview]
Message-ID: <000b01d6c301$47673ca0$d635b5e0$@gmail.com> (raw)
In-Reply-To: <eba78a62-b702-ffa3-825b-6345e72d575b@cs.umass.edu>
> For the specific case C:\Temp, I found this:
>
> cygpath -ua 'C:\Temp'
>
> -> /cygdrive/c/Temp
>
> cygpath -ua /cygdrive/c/Temp
>
> -> /cygdrive/c/Temp
>
> cygpath -ua '\Temp'
>
> -> /cygdrive/c/Temp
>
> cygpath -ua '/Temp'
>
> -> /Temp
>
> Now Cygwin is open source, so you, too, could grab the code in cygpath and
> call it as a subroutine, maybe, to try to canonicalize a wider range of
> paths.
Yeah, thanx for the tip, but this functionality won't be available on other
*nix-platforms, so some kind of #ifdef is required
> Note the interesting difference between the \Temp and /Temp cases.
> cygpath is processing \Temp as a Windows-like thing, and thus interpreting
> it according the the Windows root for the current drive. However, it
> processes /Temp and a Posix-like path, which will be in term of the
> _Cygwin_ root, generally the CYgwin install directory.
>
> Still, if you did this canonicalization first, maybe you would get more
> what you're looking for? I'm not sure it would be a good idea to insert
> this generally into the Cygwin library stack. Others more familiar with
> the fine details can probably elaborate why.
I experimented by fiddling around with making the path canonical and as you
say, maybe we will be more successful and that could still be a part of our
code that is not platform dependant
I guess we need to go out of std::filesystem::canonical though because that
is what fails (and unfortunately I guess there's a real bug in the (real)
g++ distro of <filesystem> because the
std::filesystem::path::generic-functions doesn't work as the standard
mandates either)
Once again, thanx for the tips
Best regards,
Kristian
> Regards - Eliot Moss
> --
> Problem reports: https://cygwin.com/problems.html
> FAQ: https://cygwin.com/faq/
> Documentation: https://cygwin.com/docs.html
> Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
next prev parent reply other threads:[~2020-11-25 8:02 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-17 15:15 sten.kristian.ivarsson
2020-11-17 16:45 ` René Berber
2020-11-18 9:00 ` Sv: " sten.kristian.ivarsson
2020-11-18 16:24 ` René Berber
2020-11-18 16:31 ` Eliot Moss
2020-11-18 20:46 ` Kristian Ivarsson
2020-11-18 20:56 ` Eliot Moss
2020-11-18 21:18 ` Kristian Ivarsson
2020-11-18 23:47 ` Eliot Moss
2020-11-19 8:10 ` Sv: " sten.kristian.ivarsson
2020-11-18 21:45 ` Norton Allen
2020-11-19 0:08 ` Doug Henderson
2020-11-19 6:23 ` Brian Inglis
2020-11-19 10:03 ` Sv: " sten.kristian.ivarsson
2020-11-19 15:27 ` Brian Inglis
2020-11-20 9:37 ` Sv: " sten.kristian.ivarsson
2020-11-20 15:29 ` Brian Inglis
2020-11-20 16:11 ` Sv: " sten.kristian.ivarsson
2020-11-19 15:36 ` Eliot Moss
2020-11-20 8:31 ` Sv: " sten.kristian.ivarsson
2020-11-20 18:28 ` Jonathan Yong
[not found] ` <000601d6c173$aa55d540$ff017fc0$@gmail.com>
2020-11-23 11:09 ` Sv: " Jonathan Yong
2020-11-24 9:32 ` Sv: " sten.kristian.ivarsson
2020-11-24 10:24 ` Jonathan Yong
2020-11-24 11:35 ` Sv: " sten.kristian.ivarsson
2020-11-24 12:33 ` Jonathan Yong
2020-11-24 14:01 ` Sv: " sten.kristian.ivarsson
2020-11-25 2:25 ` Jonathan Yong
2020-11-24 13:22 ` Eliot Moss
2020-11-24 14:31 ` Sv: " sten.kristian.ivarsson
2020-11-24 20:06 ` Ken Brown
2020-11-24 20:39 ` Eliot Moss
2020-11-25 8:02 ` sten.kristian.ivarsson [this message]
2020-11-25 8:30 ` Sv: " sten.kristian.ivarsson
2020-11-25 0:23 ` Brian Inglis
2020-11-25 9:00 ` Sv: " sten.kristian.ivarsson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='000b01d6c301$47673ca0$d635b5e0$@gmail.com' \
--to=sten.kristian.ivarsson@gmail.com \
--cc=cygwin@cygwin.com \
--cc=moss@cs.umass.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).