CODEWITHSUNDEEP
c++czipunzip
Paul Manta
Paul Manta

Reputation: 31577

C/C++: Easily unzip to memory

I need to find a library that allows me to easily get a directory listing of all the files inside a ZIP archive and allows me to extract any given file inside the archive to memory (a buffer). Preferably, it should be a high-level library since my requirements aren't very complex (what I mentioned above is pretty much all I need).

Previously I tried PhysFS which has the behavior I need (easily access files inside an archive), but it's unsuitable because of other reasons (there are many archives and PhysFS would require me to mount all of them individually, which is not an option). Another library that kinda has the functionality I need is Chilkat, but it's shareware so I can't use it either.

Any other suggestions?

Upvotes: 3

Views: 6763

Answers (2)

McKay.CPP
McKay.CPP

Reputation: 440

While .zip uses zlib http://zlib.net compression, it alone is not sufficient to get a directory listing from a .zip file.

You also need code that can read the .zip dictionary format. Check out Minizip http://www.winimage.com/zLibDll/minizip.html. It provides a code and simple zip/unzip command line executables.

edit 2 The code is entirely C (so is Zlib) -- the page has links to two c++ wrapper libs that both seem to be dead links.

Upvotes: 3

tofutim
tofutim

Reputation: 23374

How about zlib? http://zlib.net/ "A Massively Spiffy Yet Delicately Unobtrusive Compression Library (Also Free, Not to Mention Unencumbered by Patents)"

Upvotes: 2

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