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Date: Mon, 16 Dec 2019 16:53:22 +0100 (CET)
From: Roland Lutz <rlutz AT hedmen DOT org>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] gnetlist, attributes
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Hi Bdale,

On Sat, 14 Dec 2019, Bdale Garbee wrote:
> FYI, I wrote the tEDAx export module for lepton-netlist.

I took the liberty of translating your backend to Python[0].  While doing 
so, I noticed some things which I'd like to suggest as improvements:

* The "pinname"/"pinidx" lines implemented by the tEDAx netlist block can 
be easily derived from gEDA's pinnumber=/pinseq= attributes.

* It may be desireable to omit "footprint"/"device"/"value" lines if the 
corresponding attribute is unset instead of using "UNKNOWN"/"unknown" as 
special values.

* The tEDAx format requires spaces and some special characters in data 
fields to be escaped.[1]

You may want to have a look at gEDA/gaf's tEDAx backend[2] for reference.

Roland


[0] https://github.com/rlutz/xorn/blob/tedax-bdale/src/backend/gnet_tedax_bdale.py
[1] http://repo.hu/projects/tedax/syntax.html
[2] https://github.com/rlutz/geda-gaf/blob/master/xorn/src/backend/gnet_tedax.py