Re: Cocoa framework or Object class to uncompress files
Re: Cocoa framework or Object class to uncompress files
- Subject: Re: Cocoa framework or Object class to uncompress files
- From: Carl Hoefs via Cocoa-dev <email@hidden>
- Date: Tue, 25 Oct 2022 12:35:52 -0700
On Oct 25, 2022, at 12:12 AM, Markus Spoettl <email@hidden> 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+Compression.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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