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Date: Mon, 2 Sep 2019 20:04:44 +0300
From: "Vladimir Zhbanov (vzhbanov AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] gschem interaction from external processes
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On Mon, Sep 02, 2019 at 05:09:39PM +0100, Majenko Technologies (matt AT majenko DOT co DOT uk) [via geda-user AT delorie DOT com] wrote:
> For PCB there is no issue. Everything I need is available through --listen
> and sending actions through stdin.  That's absolutely great and a real
> godsend. I'm also happy with how gschem is working with my hack (for
> certain values of "happy"). I can tolerate the odd untitled file falling
> out in random places - they're easy enough to clean up. It's not perfect,
> but it "works" at the moment.  It's a simple enough change that shouldn't
> impact any upstream updates, and I'm happy to pull changes and recompile my
> own version locally (my version of PCB, incidentally, has many extra
> changes in it that I would love to one day clean up and push up to the main
> repo, but I did them so long ago and can't remember what I did, and they
> break the file format by adding extra parameters to some stanzas, so that
> won't be happening...)
> 
> But if something more generic and flexible should come along to allow me
> better interaction with a running gschem process, then I would gladly adopt
> it. Then I could even go public with my project wrapping program since it
> won't rely on a specially compiled version of gschem...

Again, and returning to your first post, you could use the Scheme
function `sigaction', installing a handler for it, which could do
the job, instead of hard working on the C side.

-- 
  Vladimir

(λ)επτόν EDA — https://github.com/lepton-eda