On Sat, Jan 9, 2016 at 1:28 AM, Kovacs Levente (leventelist AT gmail DOT com) [via geda-user AT delorie DOT com] <geda-user AT delorie DOT com&= gt; wrote:

On Fri= , 8 Jan 2016 20:15:24 -0900
"Britton Kerin (britton.ker= in AT gmail DOT com) [via geda-user AT d= elorie.com]" <geda-use= r AT delorie DOT com> wrote:

> The way to think about YAML/JSON is as portable text-based
> serialization formats for the couple most popular datatypes that get > built into modern languages, in particular arrays, hashes, and scalar<= br> > values (basically numbers and strings).=C2=A0 JSON doesn't support= native
> (non-tree) references so you have to add your own id field if what
> you want to refer to doesn't have already have a unique name.=C2= =A0 YAML
> does.=C2=A0 JSON is much more common but unfortunately also more noisy= .
> Some people like the noise because they don't trust any
> whitespace-based approach (bad experiences with make).

Ok. I try to express my data model in YAML. The only problem is that= I don't
have any experience in YAML, but hopefully I catch up some in the weekend.<= br>
Then we might write a library that is able to read write gpcb object to/fro= m
either YAML or SQL. It might be double work, but we can make performance te= sts
at the end.

So could we first think about an API? So we might work together parallel. F= or
example, you implement the API in current pcb, and I write the file handler= ?

I think the first step would be to implement the current capability of pcb,=
and later, when the infrastructure is there, we can fiddle with the GUI and=
other logic.

Yes.=C2=A0 Firs= t the existing parser needs to get separated from the innards of pcb.=C2=A0= As things stand now there's no single data structure that corresponds = one-to-one with the format.=C2=A0 Once this is done other equivalent format= s could be implemented.

Peop= le are understandably skeptical about whether something like this will be u= seful, so it shouldn't be viewed as *the* pcb format.=C2=A0 It's ju= st going to be something pcb can export and read.=C2=A0

=C2=A0

Another idea came in my mind to separate the exporter HIDs from the main pc= b.
For example, the gerber exporter would be a separate piece of program (usin= g
shared libraries).

I haven&#= 39;t looked at how export works yet so I don't know about this.=C2=A0 B= ut I think there's some consensus that moving things like this from app= s (pcb, gschem) to libgeda is generally a good idea.

=C2=A0

Britton

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