On 5/7/16 08:07, Bhaktavatsal R Maram via swift-corelibs-dev wrote: > I'm working on implementation of unimplemented properties in NSURL.swift. > > /public var filePathURL: NSURL?/ > > As per specification[1] which says "If the receiver is a file reference URL, > this property contains a copy of the URL converted to a file path URL. If the > receiver’s URL is a file path URL, this property contains the original URL. > If > the original URL is not a file URL, or if the resource is not reachable or no > longer exists, this property contains |nil|. " > > 'filePathURL' property is to hold copy of file reference URL converted to > file > path URL. > > > for example, > > file reference URL - *file:///.file/id=6571367.3617528/* > file path URL - > *file:///Users/mbvreddy/workarea/swift/MyTest/MyTest.xcodeproj/* > > File reference URL is a special URL on OS X which is of type > file:///.file/id=<volume_id>.<file_id>/. And it is not available on Linux. > APIs > that return file reference URLs [2] on OS X foundation > NSURL.fileReferenceURL() > is removed from Linux Foundation.
AFAIK this particular format of file reference URLs is an OS X implementation detail, and should not be relied upon (nor is it, I think, supported on certain file systems). One reason for it, no doubt, is to be able to use low-level file system APIs independently of things like maximum path length or POSIX working file directory. Nothing precludes an implementation on another platform that leverages per-file identifiers analogous to volume and file id — or you may even have a trivial implementation that just stores the full path from fileSystemImplementation. > So, I think NSURL.filePathURL also should be removed as it serves no purpose > without file reference URL. Any comments are appreciated. I'm not a Linux user but this will probably unduly restrict cross-platform apps. Using file reference URLs is quite common, especially if at some point you need a path to pass to a POSIX API. -- Rainer Brockerhoff <rai...@brockerhoff.net> Belo Horizonte, Brazil "In the affairs of others even fools are wise In their own business even sages err." http://brockerhoff.net/blog/ _______________________________________________ swift-corelibs-dev mailing list swift-corelibs-dev@swift.org https://lists.swift.org/mailman/listinfo/swift-corelibs-dev
