iPhone SDK - Is Zlib part of the SDK?

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Level 1

110 points

iPhone SDK - Is Zlib part of the SDK?

Is zlib already part of the SDK?

I want to download and unzip a ZIP file programatically. I have my own ZipFileStream implementation. Just need to incorporate the Zlibstream class. I can download the source from zlib.net but was wonder if there was native support for it.

-TRS

MacBook, Mac OS X (10.5.2)

Posted on Apr 21, 2008 12:24 PM

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Answer 1

May 16, 2008 1:03 PM in response to trshivku

(bump)

I have the same question - is there an existing mechanism, or do we need to include zlib?

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Answer 2

trshivku Author

Level 1

110 points

May 25, 2008 1:05 PM in response to Scott_Lawrence

The iPhone SDK does contain zlib.h in the usr/include folder of the SDK. But when i usee one of the APIs like uncompress() then i get a link error. There is no information about which library/framework to include to get this linked.

Also there is a zlib port for iPhone at Mac ports.

http://db.macports.org/port/show/4166

It has a download for a file with portpkg extension. When i downloaded it to my macbook there is no defaut application to unarchive it. How can get it installed if at all.

If anyone can shed some light on this it would be greatly helpful to me and many others like me.

Thanks,

TRS

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Answer 3

Bankim

Level 1

0 points

Jun 2, 2008 8:22 AM in response to trshivku

Search "libz*" in xcode and you will get the lib file for linking and dynamic link library for it.

First try to search the library name in unix naming convenetion "lib$name"

Enjoy.

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Answer 4

trshivku Author

Level 1

110 points

Jun 3, 2008 4:37 AM in response to Bankim

libz.1.2.3.dylib is available in the usr/lib folder. When i add that to the linker settings i still get a linker error for uncompress(). It does not find the definition for it.

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Answer 5

trshivku Author

Level 1

110 points

Jun 12, 2008 12:11 PM in response to trshivku

Just needed to do the following:

a) Open the project in Xcode
b) Go to the Target on the left and double click on the target
c) In the properties dialog go to the General tab
d) At the bottom click on the + sign to add a library to link to.
e) Select the dylib and add it

Code links fine.

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Answer 6

GW1921

Level 1

60 points

Jul 4, 2008 5:48 PM in response to trshivku

I'm new to zlib and was wondering if you could kindly share a few lines of code showing off the uncompress functionality. Can one 'untar' and 'ungzip' files using zlib?

Thanks

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