MNCoder
Its been about 3 weeks, but I'm finally done with a piece of work that will be used (hopefully) in the iCloud capable version of Mindnode.
MNCoder is what I'd call a clever hack using NSKeyedArchiver and NSKeyedUnarchiver to help with portability of certain Apple classes between iOS and the Mac. If you worked on both platforms, you'd know that iOS has its own implementation for colors and fonts. With iOS 4 this has been extended to NSAttributedStrings that take Core Text attributes instead of the nicer AppKit additions to NSAttributedStrings.
While I'd admit this is a somewhat complicated way of going about things, 2KSLOC to be exact, I figured this was the most straightforward and intuitive way to help people understand and possibly contribute additional code in the future.
What MNCoder does is that it uses a neutral platform independent NSCoding compliant object to store the base attributes that is needed to reconstruct an equivalent on either platform. Using #ifs, the object will give you the appropriate object. Adding to the system is NSCoder which helps with the finding and replacement of objects at runtime when doing serialization.
Its pretty much like old school language translation. Translate your source language into a intermediate version and then translate that to the target language. Nothing too fancy and easily understood.
The work is released under a BSD license which Markus has nicely given his approval of so here's hoping it'll have more contributors as it goes along.
Nice side effect of this is that I've had extensive time with Core Text and I'd say its pretty fun.
