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Mail Archives: geda-user/2018/02/09/08:36:04

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Date: Fri, 9 Feb 2018 14:37:15 +0100 (CET)
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To: "Richard Rasker (rasker AT linetec DOT nl) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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From: gedau AT igor2 DOT repo DOT hu
Subject: Re: [geda-user] Another PCB grid step question
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References: <c3aa1897-3806-3f72-feef-85551a63c2db AT linetec DOT nl> <alpine DOT DEB DOT 2 DOT 00 DOT 1802091235090 DOT 12270 AT igor2priv> <6221de93-bb98-d397-79b4-eecf3975c2e6 AT linetec DOT nl> <alpine DOT DEB DOT 2 DOT 00 DOT 1802091324350 DOT 12270 AT igor2priv>
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Hello Richard,

On Fri, 9 Feb 2018, Richard Rasker (rasker AT linetec DOT nl) [via geda-user AT delor=
ie.com] wrote:

> OK, I did some checking, and I now see that I overlooked the 'File format=
'=20
> option when saving the design. The default 'lihata' format is not=20
> PCB-compatible.
>
> Still a bit strange though, as I started out with a geda/pcb file. But I=
=20
> probably wasn't paying attention when saving it (and the first time I use=
d=20
> pcb-rnd, it was still from /trunk/src, without actually installing it -- =
maybe=20
> this had something to do with it).

Cool, thanks! Just wanted to make sure I didn't miss a bug.

For those who haven't tried pcb-rnd yet: all these complications with the=
=20
file formats are neeed because we load mainline's files, 2 dialects of=20
kicad files, 2 dialects of eagle files, hyperynx files, protel/autotrax=20
files, tEDAx files and we can save to most of these formats as well.=20
(Thanks to Erich for the countless hours of reverse engineering and=20
testing!)

The file format policy is roughly this:

1. if you load a file, pcb-rnd will automatically determine the format=20
(unless you explicitly asked for a specific format - that's possible only=
=20
via the CLI/action interface); this is remembered as the 'original' file=20
format

2. if you just 'save', it should save in the same original format you=20
loaded from (or last saved in)

3. if you do a 'save as', you can select the format; by default, it should=
=20
offer the same format as it would save under pont 2.

4. if you do anything that involves creating a new board, then the new=20
board is not "loaded", so it doesn't have such an "original format". When=
=20
you save, or save as, it will default to our native format, lihata.

If you experience any deviation from this, please let me know, because=20
that means you found a bug!

(A common way to trigger 4 is: start a new layout, import something=20
through the buffer or from the import menu; neither the buffer nor the=20
import menu would "infect" your new board with a different format.)

Just for the record: in-memory, there's no file format. In other words,=20
the in-memory representation is yet another format, different from any=20
disk file format. So any load from or save to any file format is really a=
=20
conversion. (This is the same in PCB and basically in any software that=20
doesn't save a memory dump but uses an exporter and a parser.)

> (There's a LOT of new stuff in pcb-rnd, and I haven't had time yet to exp=
lore=20
> it all -- but knowing about the file formats saves me some head-scratchin=
g=20
> :-)=C2=A0 )

Thanks for exploring!

Best regards,

Igor2
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