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POCocoa: is it safe to assume that the destination URL for delivering on an NSFilesPromisePboardType is a file URL?
 

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  1. POCocoa: is it safe to assume that the destination URL for delivering on an NSFilesPromisePboardType is a file URL?
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    <p>Is it safe to assume that the destination URL passed to an <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Reference/ApplicationKit/Protocols/NSOutlineViewDataSource_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/NSOutlineViewDataSource/outlineView:namesOfPromisedFilesDroppedAtDestination:forDraggedItems:" rel="nofollow noreferrer">outlineView:namesOfPromisedFilesDroppedAtDestination:forDraggedItems:</a> method (as specified by the NSOutlineViewDataSource protocol) is always a file URL?</p> <p>In the implementation of such a method I'm making use of NSDictionary's writeToURL:atomically: to write out a ".webloc" property list. I'd like to ensure that no existing file is overwritten by using a file name that is not already used. I know this can be checked for file URLs with NSFileManager's fileExistsAtPath: but I'm not sure how to handle the case where one is not dealing with a file URL. Then again, does that situation ever occur?</p> <p>I'm guessing that <em>YES</em>, the URL will always be a file URL, since remote volumes etc. are always provided through a mount point in the local filesystem; but perhaps I'm overlooking something ...</p> <p>And if no, how then to choose a file name so that no existing file at the destination URL is being overwritten?</p> <p>( Note: I'm writing an application that targets Mac OS X 10.4 as the minimum OS version requirement. )</p>
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