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Subject:	Re: [geda-user] Searching for refdes's having a specific attribute?
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References:	<568F9808 DOT 5040808 AT envinsci DOT co DOT uk>
	<alpine DOT DEB DOT 2 DOT 11 DOT 1601111626180 DOT 4406 AT nimbus>
From:	"M. J. Everitt (m DOT j DOT everitt AT iee DOT org) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
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Date:	Mon, 11 Jan 2016 16:00:40 +0000
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On 11/01/16 15:26, Roland Lutz wrote:
> On Fri, 8 Jan 2016, Matt Rhys-Roberts
> (matt DOT rhys-roberts AT envinsci DOT co DOT uk) [via geda-user AT delorie DOT com] wrote:
>> How could I search a directory of .sch schematic sheets for
>> components that contain a specific attribute, e.g. OrderCode=1234567,
>> please?
>
> This is a nice example of where the new Xorn libraries come in handy. :)
>
> To use this, you need a recent git version of gEDA/gaf, and you have
> to either install gEDA/gaf to a standard location or add the
> subdirectory "xorn/built-packages" to the environment variable
> PYTHONPATH.  Then you can search for matching components like this:
>
>
> import xorn.geda.attrib
> import xorn.geda.read
>
> sch = xorn.geda.read.read('schematic.sch')
> for ob in sch.toplevel_objects():
>     if isinstance(ob.data(), xorn.storage.Component) and \
>         '1234567' in xorn.geda.attrib.search_attached(ob, 'OrderCode'):
>             print xorn.geda.attrib.search_attached(ob, 'refdes')[0]
>
>
> If you want to search a complete directory, here is how you could
> write a command-line utility which does that:
>
>
> #!/usr/bin/python2.7
> import os, sys
> import xorn.geda.attrib
> import xorn.geda.read
>
> path = sys.argv[1]
> name = sys.argv[2]
> value = sys.argv[3]
>
> for dirpath, dirnames, filenames in os.walk(path):
>     for filename in filenames:
>         if not filename.endswith('.sch'):
>             continue
>         sch = xorn.geda.read.read(os.path.join(path, filename))
>         for ob in sch.toplevel_objects():
>             if isinstance(ob.data(), xorn.storage.Component) and \
>                value in xorn.geda.attrib.search_attached(ob, name):
>                 print xorn.geda.attrib.search_attached(ob, 'refdes')[0]
>
>
> You can call it like "./ordercode . OrderCode 1234567" to search the
> current directory for components with OrderCode=1234567.
>
>> Basically, I need to fit components manually to a board, one specific
>> type at a time, to keep production neat. So I need to list them by
>> unique order code, ideally.
>
> So what you ultimately want is a list of refdes's for each order code?
> You could compile that list like this:
>
>
> #!/usr/bin/python2.7
> import os, sys
> import xorn.geda.attrib
> import xorn.geda.read
>
> path = sys.argv[1]
> name = sys.argv[2]
> result = {}
>
> for dirpath, dirnames, filenames in os.walk(path):
>     for filename in filenames:
>         if not filename.endswith('.sch'):
>             continue
>         sch = xorn.geda.read.read(os.path.join(path, filename))
>         for ob in sch.toplevel_objects():
>             if not isinstance(ob.data(), xorn.storage.Component):
>                 continue
>             try:
>                 refdes = xorn.geda.attrib.search_attached(ob,
> 'refdes')[0]
>             except IndexError:
>                 refdes = None
>             for value in xorn.geda.attrib.search_attached(ob, name):
>                 if value not in result:
>                     result[value] = []
>                 result[value].append(refdes)
>
> for k in sorted(result.keys()):
>     print '%s: %s' % (k, ' '.join(result[k]))
>
>
> Call this script like "./ordercodes . OrderCode" to print a list of
> order codes and associated refdes' for the current directory.
>
> Please note that, like any of the proposed solutions, this does not
> find OrderCode= attributes which are inherited from non-embedded
> symbols.  If you want to search these, too, have a look at this mail:
>
>   http://article.gmane.org/gmane.comp.cad.geda.user/50021
>
> If you loaded the schematic this way, you can replace
> "search_attached" with "search_all" to get inherited attributes, too.
>
Roland, I commend your python, but I fear it's beyond the reach of the
average user who wants a 2 minute solution!! Assuming your code does
exactly as the OP suggested, thankfully you've brought down the several
hours of work to get to that point to a miniscule 5 minutes of
"copy/paste/execute" :) .

Matt, if you're still with us, did you fix your need appropriately, and
what solution did you end up using?!

MJE

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