Determining general type of a file (image, text, sound, etc...)
Hi I'm writing a KFile class that encapsulates a bunch of file operations that are spread out over several Cocoa and Carbon classes and want to have a couple of testing methods such as isImageFile, isMusicFile, isTextFile etc. I'm trying to avoid hard coding HFS types and/or file extensions and have it perform these tests much like the Finder does in it's search window where you can specify file kind as Images, Music, Text, Movies etc. Is there any any built in way, in either Cocoa or Carbon, to get a list of types that correspond to say Images or perform a test on a specific file that returns true for Images? Thanks for any help ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Determining general type of a file (image, text, sound, etc...)
Hi Ken and all, I would use the Uniform Type Identifiers (UTI), look at the ADC: ADC Home Reference Library Guides Carbon Data Management Uniform Type Identifiers Overview . I have used the UTI several times to identify image files and it worked well. HTH, Oleg On Jun 29, 2008, at 01:37, [EMAIL PROTECTED] wrote: Hi I'm writing a KFile class that encapsulates a bunch of file operations that are spread out over several Cocoa and Carbon classes and want to have a couple of testing methods such as isImageFile, isMusicFile, isTextFile etc. I'm trying to avoid hard coding HFS types and/or file extensions and have it perform these tests much like the Finder does in it's search window where you can specify file kind as Images, Music, Text, Movies etc. Is there any any built in way, in either Cocoa or Carbon, to get a list of types that correspond to say Images or perform a test on a specific file that returns true for Images? Thanks for any help ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
Re: Determining general type of a file (image, text, sound, etc...)
On Sat, Jun 28, 2008 at 2:37 PM, [EMAIL PROTECTED] wrote: Hi I'm writing a KFile class that encapsulates a bunch of file operations that are spread out over several Cocoa and Carbon classes and want to have a couple of testing methods such as isImageFile, isMusicFile, isTextFile etc. I'm trying to avoid hard coding HFS types and/or file extensions and have it perform these tests much like the Finder does in it's search window where you can specify file kind as Images, Music, Text, Movies etc. Is there any any built in way, in either Cocoa or Carbon, to get a list of types that correspond to say Images or perform a test on a specific file that returns true for Images? You could use the command-line utility file via an NSTask. Look at its manpage for more info. Owen ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
