Zipping a folder in Objective C

Are there any libraries that work in Objective C for zipping entire folders (and decompressing them)? I have looked at some of them by searching but they look like they require adding files individually and some of them supposedly crash...

It looks like this library might work: http://bitbuck开发者_StackOverflow社区et.org/dchest/osxzip/overview

I don't know if it supports folders, however. Anyone know if it does or have any other libraries that support zipping folders? Even sample code for interacting with the command line libz would be fine with me...

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You could use NSTask to run the command line ditto program. Be sure to look at the ditto man page for the right combination of flags to get Finder-compatible zipping.

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According to this example: http://www.raywenderlich.com/1948/how-integrate-itunes-file-sharing-with-your-ios-app you can get a NSData Object with the Zipped Data and then just write it with [data writeToFile....]

- (NSData *)exportToNSData {
    NSError *error;
    NSURL *url = [NSURL fileURLWithPath:_docPath];
    NSFileWrapper *dirWrapper = [[[NSFileWrapper alloc] initWithURL:url options:0 error:&error] autorelease];
    if (dirWrapper == nil) {
        NSLog(@"Error creating directory wrapper: %@", error.localizedDescription);
        return nil;
    }   

    NSData *dirData = [dirWrapper serializedRepresentation];
    NSData *gzData = [dirData gzipDeflate];    
    return gzData;
}