Will thanks for the heads up, for my purposes this time around, the input stream will be coming in off the file system, but I did not want to load the whole thing into an NSData object.
Ah! Well, your approach will work, but if your file is less than 4GB I highly recommend something like:
NSData *fileData = [NSData dataWithContentsOfFile:path options:NSUncachedRead error:&error];
This is NOT implemented by Apple in a naïve way - eg, it doesn't read the whole dang file and blat it into memory. Instead, it reads blocks on-demand, in a most efficient manner.
In my tests "NSUncachedRead" is very, VERY fast, great if you are only going to use each byte once. "NSMappedRead" has a different set of constraints but can also be very fast.
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