> On Jun 1, 2017, at 9:44 AM, Jonathan Taylor <jonathan.tay...@glasgow.ac.uk> > wrote: > > Can anyone help me with the seemingly simple task of creating a relative > NSURL for a filesystem object? The catch here (sorry!) is that I really do > need backward compatibility to 10.7, which rules out > fileURLWithFileSystemRepresentation:isDirectory:relativeToURL: (which I > suspect is the “right” way of doing this). > > My attempt like: > [NSURL URLWithString:[path > stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding] > relativeToURL:relativeTo]; > > This had been working ok for some time, but I have just found it to be broken > for filenames containing unusual characters. In particular, it fails when > given a filename containing a “smart quote” (not easily created directly with > the keyboard, but auto-generated as part of a time machine backup, based on > the machine name). > > Although I do not recall why I used > stringByAddingPercentEscapesUsingEncoding, I think it must have been because > it failed on some other filename pattern if I did not do that. > > String encodings is something I know basically nothing about, I am afraid. I > am speculating that what is happening is that the fancy apostrophe is not > ASCII and so my code does not work for that filename. I can change the > encoding to NSUnicodeStringEncoding, and things seem ok, but I don’t know > whether that will now definitely work for all filenames, or whether I have > just stored up an even more obscure problem for the future. > > So, finally getting to two actual questions: > 1. Will unicode encoding give me a robust solution here? > 2. Is there a differnet, better way (pre-10.9) I should be using to create a > relative URL? > > Thanks for any advice > Jonny.
I’d construct a path using -[NSFileManager stringWithFileSystemRepresentation:length:], then make a URL from that using +[NSURL fileURLWithPath:]. Charles _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
