Question

I’m monitoring a folder, when a user copies a file into the folder, I need to perform an action. However, when I perform the action the file has no contents yet. Is there a way to check that the copied file is ready?

Answer 1

I finally got it. I can use NSPasteboard to check what file is currently being copied.
With this information, I can compare the file size between the source and destination to know when the copy is complete.

NSPasteboard *pasteboard = [NSPasteboard generalPasteboard];
NSArray *classes = [[NSArray alloc] initWithObjects:[NSURL class], nil];
NSDictionary *options = [NSDictionary dictionaryWithObject: [NSNumber numberWithBool:YES] forKey:NSPasteboardURLReadingFileURLsOnlyKey];
NSArray *copiedItems = [pasteboard readObjectsForClasses:classes options:options];