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pigweed / third_party / github / jimsch / cn-cbor / 33034139f07dbc26ff4ef861bd9100b5b03f67bb
commit33034139f07dbc26ff4ef861bd9100b5b03f67bb[log] [tgz]
authorOlaf Bergmann <bergmann@tzi.org>Fri Apr 24 17:12:40 2015 +0200
committerOlaf Bergmann <bergmann@tzi.org>Fri Apr 24 17:12:40 2015 +0200
treeee8f4d8ea75cbbf7a5aaa6348e69c98fbdec6700
parentb444590950ec8959e696640c86450331f5f17e3d [diff]
Optional float encoding/decoding

When CBOR_NO_FLOAT is defined at build time, support for floating
point types is switched off.

When trying to parse a data item of type 7 and additional information
25 to 27 (i.e., items starting with 0xf9 to 0xfb), the parser will
return the new error code CN_CBOR_ERR_FLOAT_NOT_SUPPORTED.
4 files changed
tree: ee8f4d8ea75cbbf7a5aaa6348e69c98fbdec6700
  1. cmake/
  2. include/
  3. src/
  4. test/
  5. .editorconfig
  6. .gitignore
  7. build.sh
  8. CMakeLists.txt
  9. cn-cbor.pc.in
  10. Doxyfile.in
  11. LICENSE
  12. README.md
  13. Simple-Makefile
README.md

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