cn-cbor: A constrained node implementation of CBOR in C

This is a constrained node implementation of CBOR in
C that I threw together in 2013, before the publication of
RFC 7049, to validate certain
implementability considerations.

Its API model was inspired by
nxjson. It turns out that
this API model actually works even better with the advantages of the
CBOR format.

This code has been used in a number of research implementations on
constrained nodes, with resulting code sizes appreciably under 1 KiB
on ARM platforms.

I always meant to improve the interface some more with certain API
changes, in order to get even closer to 0.5 KiB, but I ran out of
time. So here it is. If I do get around to making these changes, the
API will indeed change a bit, so please be forewarned.

Building

There is a Simple-Makefile for playing around, as well as a complete
cmake-based build environment.
(You can choose what fits your needs better.)

Building with cmake:

./build.sh

Building including testing:

./build.sh all test

Generating a test coverage report (requires lcov[^1]; result in build/lcov/index.html):

./build.sh all coveralls coverage_report

License: MIT

[^1]: Installation with homebrew: brew install lcov