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	Fri, 10 Jul 2015 08:23:10 -0700 (PDT)
Date:	Fri, 10 Jul 2015 18:23:08 +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] why I parse sch: gnetlist, writing backends (Back
	annotation)
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On Fri, Jul 10, 2015 at 03:49:27PM +0200, gedau AT igor2 DOT repo DOT hu wrote:
>
>
> On Fri, 10 Jul 2015, Vladimir Zhbanov (vzhbanov AT gmail DOT com) [via geda-user AT delorie DOT com] wrote:
> >
> >TL;DR
> >Have you ever tried to read 'info geda-scheme'?
>
> No.
>
> But I do div down in random unknown code written in random unknown-to-me
> languages from time to time to fix something or make small modifications, so
> I know when it takes much longer than it should. With scheme, it does.
>
> I did it once, it enables me to access most of the data I need, so I won't
> need to do it ever again.
>
> Regards,
>
> Igor2

If your task was outputting coords of line segments in your schematic,
it is as easy as the script attached. With little modifications you can
output it to any file. You can use it in gschem or with the gaf utility
if you want to make it a stand-alone program.

And for the record: gnetlist is g-netlist. It's for netlisting (for work
with pin, nets, components) rather than accessing any schematic objects.

My wish to all participants of these thread (hope it's non-offensive):
please, try to be less ignorant, better ask here rather than flood the
list with your private opinions on how everything around is bad.

Thanks,
  Vladimir

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(use-modules (geda page))
(use-modules (geda object))

(for-each
  (lambda (object)
    (and (line? object)
      (format #t "X1: ~A Y1: ~A X2: ~A Y2: ~A\n"
              (car (line-start object))
              (cdr (line-start object))
              (car (line-end object))
              (cdr (line-end object))
              )))
  (page-contents (active-page)))

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