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Date: Tue, 2 Apr 2013 12:59:26 -0700
From: Andrew Poelstra <asp11 AT sfu DOT ca>
To: geda-user AT delorie DOT com
Subject: Re: [geda-user] C/C++ parsing library for PCB file format?
Message-ID: <20130402195926.GB26221@malakian.lan>
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On Tue, Apr 02, 2013 at 07:47:22PM +0200, Stefan Salewski wrote:
>=20
> Question: For footprints we have now optional dimensions like nm -- is
> that restricted to footprint files, or can we have that in .pcb files
> too? I have just loaded a .pcb file and stored again -- seems to use
> 0.01 mil units. Is nm unit possible, so that I have to care for it when
> parsing?
>


You can put explicit units into .pcb files, and pcb will understand
it, but right now it will always output using mm or mil, depending
on what makes sense.

Outputting extra units would mean a breaking change in the file
format, but if you want to do it anyway (recent versions of pcb
can handle it), open pcb-printf.h and find

  /* This is all units allowed in parse_l.l */
#if 0
  ALLOW_READABLE =3D ALLOW_NM | ALLOW_UM | ALLOW_MM |
                   ALLOW_M  | ALLOW_KM | ALLOW_CMIL |
                   ALLOW_MIL | ALLOW_IN,
#else
  ALLOW_READABLE =3D ALLOW_MIL | ALLOW_MM,
#endif


and change that 0 to a 1.


Andrew

=20
--=20
Andrew Poelstra
Email: apoelstra at wpsoftware.net
Web:   http://www.wpsoftware.net/andrew


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