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10372 :: CBOR?

[2023-08-04T04:03:58+02:00]

elcritch (orginal) [2023-08-04T04:03:58+02:00] view original

Out of curiosity, has anyone made a complete CBOR implementation? I recall seeing a couple of partial ones last year, but haven't followed up since.

blackmius (orginal) [2023-08-04T08:32:09+02:00] view original

it's bad answer, but why not msgpack?

elcritch (orginal) [2023-08-04T21:24:15+02:00] view original

I do use MsgPack. Though CBOR while a “clone” of MsgPack also adds more ability for extensions via custom tags.

There’s standard tags for things like JWT, GPS locations, etc.

It also has a bunch of standardizations including RPC that’s widely used in IoT.

The main downside is that implementing it from the standard sucks. MagPack is very clear.

blackmius (orginal) [2023-08-05T12:41:51+02:00] view original

i made small google research on finding CBOR and yes there is no nim implementation. maybe it would be easy to make bindings to existing c/c++ libraries

jk49 (orginal) [2023-08-09T11:44:51+02:00] view original

I have been searching the same thing, and CDDL too.

the best source i find is https://github.com/NordicSemiconductor/zcbor

it has both CDDL parser, c code generator, and encoder/decoder in c.

but the CDDL parser is written in python...

nasl (orginal) [2023-08-09T13:04:13+02:00] view original

My googleFu found: https://git.sr.ht/~ehmry/nim_cbor/log

elcritch (orginal) [2023-08-09T23:24:43+02:00] view original

Nice! Looks like that one's still been in development which is great.

icedquinn (orginal) [2023-12-05T09:10:30+01:00] view original

I just finished rewriting mine this evening https://git.sr.ht/~icedquinn/icedcbor

elcritch (orginal) [2023-12-05T21:02:19+01:00] view original

Awesome! I'll have to take a look. Does it support extended types?

elcritch (orginal) [2023-12-05T21:23:54+01:00] view original

Note it looks like you don't have a nimble file? That'd make the library hard to use. :)

icedquinn (orginal) [2023-12-07T04:24:54+01:00] view original

It supports the semantic tag and the extended semantic tag. It doesn't do anything special with those, though. You just get the underlying CBOR value with the tag attached that it means "something."