220 28221 article Path: news.gmane.org!.POSTED!not-for-mail From: Nicol Bolas Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Filesystem Library and Standardized Paths Date: Sun, 11 Sep 2016 08:32:18 -0700 (PDT) Lines: 116 Approved: news@gmane.org Message-ID: References: <316e66e9-764b-40da-bffc-e0ce2ed75ddd@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_201_1271806046.1473607938485" X-Trace: blaine.gmane.org 1473607958 19922 195.159.176.226 (11 Sep 2016 15:32:38 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 11 Sep 2016 15:32:38 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCEKFTV6ZUMBBA7S2W7AKGQEQ2E3QIY@isocpp.org Sun Sep 11 17:32:34 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pf0-f198.google.com ([209.85.192.198]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bj6k1-0003Qk-No for gclcip-std-proposals@m.gmane.org; Sun, 11 Sep 2016 17:32:21 +0200 Original-Received: by mail-pf0-f198.google.com with SMTP id x24sf303709045pfa.0 for ; Sun, 11 Sep 2016 08:32:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=aLZbKIE2SHJcelZtmkM71dBh8xkd/1bCuXOshyQcSWg=; b=f3hIi8j2oHmx6DTcf7nxwRbX+6wyQOlKfpczTSBRPVI/UjASiumlmTqwpAHy2XLeiU OBBp5FP5AaukubcmcxyLYR3DG1X7bOa1mnReELI8M9F6gOpnoSHELYpr2ruq2edhoNLc gwjxdtDdCvuGReldn/LxkLRMZ1xtYysltwZp6LmlaCNXzJ+l43QoQ8AaKFTakRYSkT2A /+JH1fsJ6AqLBuxT+4d22D+AqWWWHcIheVNDBCU9JKY+cfWhzyOOOWuqLaT+LXvc5ARZ Ga42X0pSGCXCAIGNF7zIyBfNbSZ3259oBPkXx4CjFTXEyTRLexyUZEMHzvs+nJvHdq2G 848Q== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=aLZbKIE2SHJcelZtmkM71dBh8xkd/1bCuXOshyQcSWg=; b=HXyFrw9ObAt/+f2UXFKqjmovV5RtzIo6B+3F4IHLUUjlcVqum8mFH8ZwRtcKEHDcsG sL/TGcUJ7yZZHTAkzXjHQWcSxl2VKNcMX1KHz59CJsIVQH4ZAnfsxn4HDiutbdq8P5Sn 2t7bEq4QwMURKoqozW5XmqrZPTFJWpWw8ACOyT6dxe+9aRoncEmDVxagBQMmlFSXgxOT wCz9X2UO3Bo5euaYMABI0EJO640VUWWnf1xz+JYXCQogoDnNyYxoGjCl48mXRbkzG7qw UZTpMD9c70SchD0mTAyG5mmNf8EYjQMXjhuxxoHAl0KniLNX6TUP1SpFF759mtR7tbtW JXrQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=aLZbKIE2SHJcelZtmkM71dBh8xkd/1bCuXOshyQcSWg=; b=e3TIjbe8Eb6JmkQzMoXvurIYCE9JJ6pYmqR2rGg7BCAlpGpnimGFnjGuTxmO+VRS89 dHvPfjPybiiQaIj4ki8aRrSJ4bkuzDpyLLpxpNtp2UBwzmSSlkEt0D92yYRWwwgOKUVs tRBrz4LxF3xMS1PlvTw7zX06iTBJfhhhlj5UeSxGCqIljlpZ2B9LXgvhlsYKkHlASfwk TYoIrNEeSBpIItjTjlaWMg9e7gSzNIbKF/nBmGS4j4GESsttGQI4/Cejg9+yNnShpafc +Jaxj1XZSMmZFyOP5ddpz9/J2fl47g7tMo6ooZFjm+BNAcTXTZQGwv+TxXdPJudtcWdb go3w== X-Gm-Message-State: AE9vXwNIAYt8Oj1/5HrP2av9mqzw/yNaUKzZpoJKo3C/g44zYQsGcdKhomqaLO/m/iPt/w== X-Received: by 10.67.7.4 with SMTP id cy4mr11973204pad.30.1473607942799; Sun, 11 Sep 2016 08:32:22 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.36.127.88 with SMTP id r85ls2606336itc.0.canary; Sun, 11 Sep 2016 08:32:19 -0700 (PDT) X-Received: by 10.36.127.195 with SMTP id r186mr192704itc.0.1473607939756; Sun, 11 Sep 2016 08:32:19 -0700 (PDT) In-Reply-To: <316e66e9-764b-40da-bffc-e0ce2ed75ddd@isocpp.org> X-Original-Sender: jmckesson@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:28221 Archived-At: ------=_Part_201_1271806046.1473607938485 Content-Type: multipart/alternative; boundary="----=_Part_202_2067860669.1473607938485" ------=_Part_202_2067860669.1473607938485 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Sunday, September 11, 2016 at 11:19:35 AM UTC-4, Jens =C3=85kerblom wrot= e: > > Hello there, > > I've been looking through the proposed C++17 Filesystem library and=20 > thought it would be a nice add-on to have common paths. The only path I s= ee=20 > that is already present is the *std::filesystem::temp_directory_path*.=20 > The directories of interest (as I see) would be > > - *executable_directory_path*, *installed_directory_path* or maybe a= =20 > better name, *bundle_directory_path*, directory where the executable= =20 > is being run / has been installed. Assumed to be read-only. > =20 > This should not just be a directory path; it should include the name of= =20 the executable as well. If you want the directory, just clip off the=20 executable. While `argv[0]` works on some platforms, it doesn't work on=20 UTF-16 platforms. This would give us a standard way to get at the=20 executable file path. > > -=20 > - *userdata_directory_path*, directory where current user stores data,= =20 > "My Documents" on Windows for example. Assume permission required to w= rite=20 > and read. > - *cache_directory_path*, directory to data that persists longer than= =20 > in *temp_diretory_path*, can be removed by OS if deemed necessary.=20 > "Library/Cache" on iOS for example. Assume write and read permission. > - *appdata_directory_path*, directory where the application can store= =20 > persistent data not to be shared with other application.=20 > "/data/data/" on Android for example. Assume write and r= ead=20 > permissions. > =20 > I don't like `temp_directory_path` as is, so I don't want to see a=20 proliferation of similar platform-specific directories. --=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp= ..org/d/msgid/std-proposals/aeffe555-c173-4a85-bbc8-b72ff6c3a333%40isocpp.or= g. ------=_Part_202_2067860669.1473607938485 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Sunday, September 11, 2016 at 11:19:35 AM UTC-4, Jens = =C3=85kerblom wrote:
Hello there,

I've been looking through the proposed C++= 17 Filesystem library and thought it would be a nice add-on to have common = paths. The only path I see that is already present is the std::filesyste= m::temp_directory_path. The directories of interest (as I see) wou= ld be
  • executable_directory_path, installed_directory_p= ath or maybe a better name, bundle_directory_path, directory whe= re the executable is being run / has been installed. Assumed to be read-onl= y.
This should not just be a directory= path; it should include the name of the executable as well. If you want th= e directory, just clip off the executable. While `argv[0]` works on some pl= atforms, it doesn't work on UTF-16 platforms. This would give us a stan= dard way to get at the executable file path.

  • userdata_d= irectory_path, directory where current user stores data, "My Docum= ents" on Windows for example. Assume permission required to write and = read.
  • cache_directory_path, directory to data that persists = longer than in temp_diretory_path, can be removed by OS if deemed ne= cessary. "Library/Cache" on iOS for example. Assume write and rea= d permission.
  • appdata_directory_path, directory where th= e application can store persistent data not to be shared with other applica= tion. "/data/data/<package_name>" on Android for example. A= ssume write and read permissions.
I do= n't like `temp_directory_path` as is, so I don't want to see a prol= iferation of similar platform-specific directories.

--
You received this message because you are subscribed to the Google Groups &= quot;ISO C++ Standard - Future Proposals" group.
To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+unsubscribe@isocpp.org.
To post to this group, send email to std-proposals@isocpp.org.
To view this discussion on the web visit https://groups.google.= com/a/isocpp.org/d/msgid/std-proposals/aeffe555-c173-4a85-bbc8-b72ff6c3a333= %40isocpp.org.
------=_Part_202_2067860669.1473607938485-- ------=_Part_201_1271806046.1473607938485-- .