In Cocoa, do you have to do anything special to make sure you copy resource forks when copying files?

Question

I had assume I could just do this, but I don't have a way to check that resource forks went along for the ride.

NSFileManager *fm = [NSFileManager defaultManager];
[fm copyPath:absSourcePath toPath:absDestinationPath handler:err];

edit: I need to copy in a 10.4-6 compatible manner. (Yes, really 10.4.)

Answer 1

Yes, everything gets copied, including file permissions, subdirectories, symbolic links, you name it. The documentation recommends using copyItemAtPath:toPath:error: in 10.5 and later, so you might want to work that in if possible. It's not available on 10.4, so you'll have to use copyPath:toPath:handler: there.

I guess I should note, it may depend on the destination filesystem; I don't know what would happen if it didn't support resource forks. I guess it would use Apple Double?

Answer 2

I'm pretty sure this still works, but I haven't seen a file with a resource fork in some time, so I can't say for certain.

http://www.macosxhints.com/article.php?story=2002022409532098