Re: dealing with alias files, finding URL to target file
Re: dealing with alias files, finding URL to target file
- Subject: Re: dealing with alias files, finding URL to target file
- From: Mike Abdullah <email@hidden>
- Date: Fri, 15 Apr 2011 17:09:33 +0100
On 15 Apr 2011, at 16:44, Ken Thomases wrote:
> On Apr 15, 2011, at 10:20 AM, Sean McBride wrote:
>
>> Of late, I've been working to remove NSString-based paths, FSRefs, and
>> Alias Manager usage in my code, in favour of NSURL.
>>
>> But I'm having trouble with alias files.
>>
>> NSOpenPanel helpfully, by default, resolves aliases before it returns
>> the URL to you. But NSPathControl does not and file drops that you get
>> off NSPasteboard also do not. So in many cases I need to manually check
>> if a URL points to an alias file, and find the file it points to. Am I
>> missing an easy/modern way to do this?
>
> Yes. Bookmark data is the modern replacement for alias records. The new bookmark APIs are backward compatible with aliases, including alias files. See the documentation for +[NSURL bookmarkDataWithContentsOfURL:error:]. You'd follow that with -URLByResolvingBookmarkData:options:relativeToURL:bookmarkDataIsStale:error:.
Ken is right, this is the modern way to do it. If you need pre-10.6 support, look into NDAlias or BDAlias.
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