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Date: Mon, 2 Sep 2019 17:54:03 +0200 (CEST)
From: Roland Lutz <rlutz AT hedmen DOT org>
To: "Majenko Technologies (matt AT majenko DOT co DOT uk) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] gschem interaction from external processes
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Precedence: bulk

I just pushed what I've implemented so far.  (Sorry, I should make a habit 
of pushing more often.)

The relevant code is in gschem/src/x_controlfd.c:

> Remote-control gschem via a file descriptor.
>
> This feature allows project managers like Igor2's "genxproj" to issue 
> certain actions in gschem.  It is implemented as a plain text protocol 
> and can be enabled via the command-line options `--control-fd=stdin' or 
> `--control-fd=FD'.
>
> The following commands are currently supported:
>
>     visit FILE
>     save FILE
>     save-all
>     revert FILE
>     close FILE
>     patch-filename FILE PATCHFILE
>     import-patch FILE [PATCHFILE]
>     quit
>
> File paths must be absolute, except for patch filenames which are 
> resolved relative to the main file.  Arguments are separated by 
> spaces; spaces and backslashes inside arguments must be escaped 
> with a backslash.

Does this provide what you need for your project management system?