Re: [Cbor] Reviews and shepherd for draft-ietf-cbor-cddl-more-control

[Carsten Bormann <[e-mail]>]

Hi Laurence,

thank you for this response.

> On 9. Apr 2024, at 20:11, lgl island-resort.com <[e-mail]> wrote:
> 
> Is there a .join that works for bstr? Seems useful to me.

That is indeed a good point.
We could do that with a different control operator (leaving .join for text strings only), or by making .join be responsive to whether the array on the control side contains text or byte strings.
I’ll try to come up with a proposal.

> Also, what about converting a b64 text string into a bstr? I can’t describe a specific use case off the top of my head, but maybe?

You mean, different from what .b64u/.b64c and friends do?
Maybe I do need an example to understand what this would be.

> Ideally, I’d try re doing the cddl for EAT with these to see how they work. EAT does a lot of CBOR-JSON mixing so it’s a good test. Thomas offered to help too. I’m not going to promise completing that, but I’ll give it a try.

That would certainly be a good, realistic test!

> Is there a version of the cddl tool that supports these available?

“In the CDDL tool described in Appendix F of [RFC8610], the control operators defined in the present revision of this specification are implemented as of version 0.10.4” [1].  (The cddl gem currently is at 0.11.2.)

[1]: https://www.ietf.org/archive/id/draft-ietf-cbor-cddl-more-control-04.html#section-5-2

Grüße, Carsten