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Date: Thu, 25 Oct 2018 23:41:04 +0300
From: "(graahnul DOT grom 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 error
Message-ID: <20181025234104.3aafb50b@demon>
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On Mon, 22 Oct 2018 09:39:39 -0400
"Edward Comer (ecomer AT yahoo DOT com) [via
geda-user AT delorie DOT com]" <geda-user AT delorie DOT com> wrote:

> *FYI:*
> I have used gschem for years and I encountered a bug that
> cost me an embarrassing amount of time to resolve.
> After a schematic editing session I closed the schematic.
> When I next tried to reopen it, it failed to open with an
> error of "failed: Tried to attach a non-text item as an
> attribute."
> 
> The error was hard to catch in the 27 part schematic. The
> problem is the "2" in the last character of the last "T"
> line of the part. The "2" means that the next "2" lines
> are text - except that that is wrong. There is only one
> text line and gschem failed when it encountered the "}".
> 
> It would certainly have been nice if gschem had displayed
> the offending line, part or a useful error. Also what
> would have been nice, but is absent, would be a --verbose
> option that printed each part just before it was parsed.
> 

Good point. Certainly, we need such a feature.
Just imagine if that happens not with 27 part schematic,
but with, say, 270 parts one. 8-[]
I'm going to implement this. So far [1], with --verbose
command line option, the input file is printed line by line
as it is parsed (along with line numbers). That way, if
there is a parsing error, it can be identified by checking
last lines of the output against the "gEDA/gaf File Format
Document" [2].


[1]
https://github.com/graahnul-grom/lepton-eda/tree/tb_083_parse_verb
[2]
http://wiki.geda-project.org/geda:file_format_spec

> 
> *BAD part:*
> 
> C 52700 49100 1 90 0 resistor_generic.sym
> {
> T 52780 49580 5 8 1 1 180 4 1
> refdes=R5
> T 51500 49200 5 8 0 1 90 1 1
> device=RESISTOR
> T 52500 49400 5 8 1 1 180 1 1
> value=1k/2W
> T 51200 49200 5 8 0 1 90 1 1
> footprint=2512.fp
> T 50800 49200 5 8 0 1 90 1 1
> symversion=1.1
> T 52700 49100 5 8 0 0 0 0 1
> vendor=mouser
> T 52700 49100 5 8 0 0 0 0 1
> vendor_part_number=279-CRGH2512J1K0
> T 52700 49100 5 8 0 0 0 0 1
> manufacturer=TE
> T 52700 49100 5 8 0 0 0 0 *2*
> manufacturer_part_number=CRGH2512J1K0
> }
> 
> *GOOD part:*
> 
> C 52700 49100 1 90 0 resistor_generic.sym
> {
> T 52780 49380 5 8 1 1 180 4 1
> refdes=R5
> T 51500 49200 5 8 0 1 90 1 1
> device=RESISTOR
> T 52500 49300 5 8 1 1 180 1 1
> value=1k/2w
> T 51200 49200 5 8 0 1 90 1 1
> footprint=2512.fp
> T 50800 49200 5 8 0 1 90 1 1
> symversion=1.1
> T 52700 49100 5 8 0 0 0 0 1
> vendor=mouser
> T 52700 49100 5 8 0 0 0 0 1
> vendor_part_number=279-CRGH2512J1K0
> T 52700 49100 5 8 0 0 0 0 1
> manufacturer=te
> T 52700 49100 5 8 0 0 0 0 1
> manufacturer_part_number=CRGH2512J1K0
> }