NSArchiver output incompatible with vanilla NSUnarchiver

[gregzo]

Objects serialized with NSArchiver can't be deserialized with vanilla NSUnarchiver. Looking at the raw data, it seems that the 2 serialisation formats simply are different. Am I missing something?

Awesome project, by the way - invaluable learning tool.

[cjwl]

Last I checked, the NSArchiver non-keyed format was not documented so we're not able to reliably decode it. The existing implementation is for cococtron to cocotron encoding/decoding. If the Apple encoding is documented this could be addressed.

I'd recommend switching to keyed archiving if that is an option, the format is documented enough and is implemented in cocotron.

[gregzo]

I've been spending the day reverse engineering the format - looks doable, but I'm not that experienced in serialisation. Just spotted this which helps a lot: https://github.com/depth42/MEUnarchiver

I need to serialise as well as deserialize, in C++. For my current project, I'm confident I can hack something together to handle basic NSAttributedString serialisation supporting just the types I need, but nothing exhaustive nor solid...