Used Framework and Utilities
Nektony applications use the Sparkle software update framework and the binary diff/patch utility for macOS and meet all the license requirements.
About Sparkle framework
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About binary diff/patch utility
- bsdiff and bspatch are tools for building and applying patches to binary files.
- bsdiff and bspatch use bzip2; by default they assume it is in /usr/bin.
- bsdiff requires max(17*n,9*n+m)+O(1) bytes of memory, where n is the size of the old file and m is the size of the new file. bspatch requires n+m+O(1) bytes.
- bsdiff runs in O((n+m) log n) time; on a 200MHz Pentium Pro, building a binary patch for a 4MB file takes about 90 seconds. bspatch runs in O(n+m) time; on the same machine, applying that patch takes about two seconds.
bspatch.c and bsdiff.c, from bsdiff 4.3 <http://www.daemonology.net/bsdiff/>:
Copyright (c) 2003-2005 Colin Percival.
sais.c and sais.c, from sais-lite (2010/08/07) <https://sites.google.com/site/yuta256/sais>:
Copyright (c) 2008-2010 Yuta Mori.
Copyright (c) 2011 Mark Hamlin.