On Jan 31, 2010, at 9:12 PM, Kyle Sluder wrote: > On Sun, Jan 31, 2010 at 5:51 PM, Stuart Malin <stu...@zhameesha.com> wrote: >> I acquire a password from a keychain using SecKeychainFindGenericPassword. >> That provides a non null terminated c string and a length. I had been using >> [NSString stringWithCString: length:] to get an NSString instance of the >> password. However, the +stringWithCString:length: method was deprecated way >> back, so I thought I'd clean up my code and use +stringWithCString:encoding: >> -- however that doesn't work because the supplied C string isn't null >> terminated. I did a bit of searching, and found in the archives on >> CocoaBuilder [1] someone's solution back in September of 2005, which was to >> copy the acquired password to a new buffer of 1 additional byte and create a >> new null terminated C string there: > > You could wrap the provided buffer with an NSData and use -[NSString > initWithData:encoding:].
If I use +dataWithBytes:length: then I need to specify a length 1 greater, and that additional byte must be set to 0 (to null terminate the string). So, I could use NSMutableData, then -resetBytesInRange: to zero out the last byte, which requires creating an NSRange struct, and that all seems heavier than just using the C code. But then, the processor is fast, and this is code that is run rarely, so optimizing isn't important. I guess it is just a question of style... _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
