On Oct 25, 2022, at 12:12 AM, Markus Spoettl <ms_li...@shiftoption.com> wrote:
> 
> On 10/25/22 3:45 AM, Carl Hoefs via Cocoa-dev wrote:
>> My iOS app downloads a gzip'd data file into its sandbox that the app needs 
>> to unzip
>> and process. I don't see anything in Cocoa (such as NSFileManager) that 
>> addresses
>> uncompressing files. Is there a way?
>> (BTW, I tried some ancient 3rd party code called ZipArchive but it always 
>> fails trying
>> to parse the zipped file.)
>> I'm hoping there's a built-in solution or framework that I'm just 
>> overlooking.
> 
> I'm using an NSData extension that uses <zlib.h>:
> 
> https://github.com/schacon/igithub/blob/master/CocoaGit/Util/NSData%2BCompression.m
> 
> Is very easy to use and works very well. You need to add "-lz" to the "Other 
> Linker Flags" linker option in the target build settings of your project.
> 
Wow, that works perfectly! And it handles both ZIP and GZIP! 
It's also efficient: It inflates a 120MB file in 0.28 secs. Awesome!

(BTW, I added "libz.tbd" to the project, and it works. But what is with the 
.tbd extension?)

Thanks so much for this, I was about to give up hope!

-Carl


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