Try going down a level to the BSD layer APIs for directory contents traversal. -- Gary L. Wade (Sent from my iPad) http://www.garywade.com/
> On Nov 13, 2015, at 8:28 AM, Jonathan Taylor <jonathan.tay...@glasgow.ac.uk> > wrote: > > Hi all, > > I want to be able to identify quickly (programatically) how many image files > reside in a particular directory. At present I call: > [NSFileManager defaultManager] contentsOfDirectoryAtPath:dir error:nil]; > and then examine the type suffixes (which in comparison is very quick). When > looking at a directory over a network or on an external drive, the > NSFileManager call can take several seconds for a directory containing 18k > files of which half are images. > > These sorts of numbers are in fact a common use case for me, and I would like > to avoid this delay. This is for preview information in an NSOpenPanel, so I > don't want to make things this unresponsive - but at the same time it is very > useful to have access to this information for the preview. > > Can anybody advise on a quicker way of achieving what I want to achieve? The > fact that 'ls' takes almost as long makes me think this is probably a fairly > insurmountable problem, but at the same time the quantity of information > transferred (of the order of 200k of data) should not take 2 seconds to > transfer, so in that sense it doesn't seem unreasonable to try and see if > there is a faster way. > > I would prefer to get the filenames themselves, but I could settle for just a > count of the total number of files (of any kind) in the directory *and* the > ability to get the paths of just the first few files in the directory, if > there might be a faster way of doing that. > > Thanks for any suggestions > Jonny _______________________________________________ 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
