1) There's also MagicKit, an Obj-C wrapper around libmagic:
https://github.com/aidansteele/MagicKit
2) If you just want to know if something is an image, just try loading it:
[[NSImage alloc] initWithData:data]
If -initWithData: returns nil, it is not an image.
Jakob
On 28.09.2013, at 23:29, Charles Srstka <cocoa...@charlessoft.com> wrote:
> On Sep 28, 2013, at 4:17 PM, Devarshi Kulshreshtha
> <devarshi.bluec...@gmail.com> wrote:
>
>> 1. Is there any other way to identify file extension for the files without
>> extensions, say from NSData object?
>
> Have a look at the files in /usr/share/file/magic/ to get some ideas of how
> to identify various types of files.
>
> Charles
>
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