On 3, Jan, 2012, at 07:14 PM, Quincey Morris wrote:
> On Jan 3, 2012, at 02:11 , Martin Hewitson wrote:
>
>> Actually, it seems that the NSWorkspace method behaves differently,
>> (assuming I'm using it correctly):
>>
>> [[NSWorkspace sharedWorkspace] filenameExtension:@"pdf"
>> isValidForType:(NSString *)kUTTypeText]
>>
>> returns YES
>>
>> whereas the UTTypeConformsTo() solution returns NO.
>
> One thing to consider is that your UTType… approach uses the *preferred* UTI
> for '.pdf', which may indeed not conform to the text type. But there could be
> another '.pdf'-based UTI defined on your system that does conform. AFAICT the
> standard UTIs don't contain a text-conforming UTI for '.pdf', but it's
> certainly possibly that some app has added the association.
>
>
I see. I don't know how to check that. In any case, I'm left wondering which
one to use. I want that .pdf is not a text file, so I guess I'll stick with the
UTTypeConformsTo() solution, though this all feels a little fragile. I may make
hard-coded exceptions for typical extensions that the app deals with, and
always return YES from my -isText method for these particular extensions.
Thanks for your thoughts,
Martin
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Martin Hewitson
Albert-Einstein-Institut
Max-Planck-Institut fuer
Gravitationsphysik und Universitaet Hannover
Callinstr. 38, 30167 Hannover, Germany
Tel: +49-511-762-17121, Fax: +49-511-762-5861
E-Mail: [email protected]
WWW: http://www.aei.mpg.de/~hewitson
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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