220 28270 article Path: news.gmane.org!.POSTED!not-for-mail From: Matthew Woehlke Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Filesystem Library and Standardized Paths Date: Fri, 16 Sep 2016 11:14:36 -0400 Lines: 54 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: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1474125148 4828 195.159.176.226 (17 Sep 2016 15:12:28 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 17 Sep 2016 15:12:28 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC37LBFWUIFBBSN26W7AKGQESPIWGEY@isocpp.org Sat Sep 17 17:12:24 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-vk0-f69.google.com ([209.85.213.69]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1blHHp-0007YR-K8 for gclcip-std-proposals@m.gmane.org; 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spf=neutral (google.com: 195.159.176.226 is neither permitted nor denied by best guess record for domain of gclcip-std-proposals@m.gmane.org) smtp.mailfrom=gclcip-std-proposals@m.gmane.org; dmarc=fail (p=NONE dis=NONE) header.from=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:28270 Archived-At: On 2016-09-11 11:19, Jens =C3=85kerblom wrote: > Hello there, >=20 > I've been looking through the proposed C++17 Filesystem library and thoug= ht=20 > it would be a nice add-on to have common paths. The only path I see that = is=20 > already present is the *std::filesystem::temp_directory_path*. The=20 > directories of interest (as I see) would be >=20 > - *executable_directory_path*, *installed_directory_path* or maybe a= =20 > better name, *bundle_directory_path*, directory where the executable i= s=20 > being run / has been installed. Assumed to be read-only. I don't think you can implement this without platform support. That support *might* already be available on common platforms, but then again it might not. Implementing it for example on Linux requires digging around in /proc. Specifically, you need something like https://github.com/gpakosz/whereami. > - *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 = in=20 > *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. These may be simplifications. I would compare with existing prior art, e.g. http://doc.qt.io/qt-5/qstandardpaths.html. --=20 Matthew --=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/nrh28q%24mir%241%40blaine.gmane.org. .