[Koha-devel] EAN-13 barcode support

[Wojciech Zatorski]

W dniu 2011-06-01 19:58, Dobrica Pavlinusic pisze:
> I need to develop EAN-13 barcode support in next two weeks to migrate
> one university library from custom software.
>
> First step should be creation of RFC document, but I didn't receive
> confirmation e-mail from wiki, so I can't add it there directly. I tried
> with this and gmail.com e-mail address, so I would be greatful if
> somebody could help me with that.
>
> Basically, library now uses EAN-13[1] barcode which is zero-padded primary key
> in old system istead of ISBN or ISSN. Since books allready have barcodes
> on them, we can't change it.
>
> To make things more insteresting, at least one barcode reader reports it
> as UPC-A[2] without first leading zero, since EAN-13 has backwards
> compatibility with it.
>
> So, my first question is should I store barcodes padded with zeros in
> Koha? It seems that itemBarcodeInputFilter syspref and small change to
> barcodedecode in C4/Circulation.pm will support both solutions, and it
> seems to be that 13-digit EAN-13 with padded zeros is cleaner solution.
>
> Next, I would need to implement plugin which generates new barcodes in
> same format (with check digit). This would involve change to autoBarcode
> syspref in cataloguing/value_builder/barcode.pl and new C4/Barcode/EAN13.pm
> to support next barcode while ignoring last checksum digit.
>
> Finally, we need to print them. PDF::Reuse::Barcode allready supports
> EAN13, so it seems that small change to C4/Labels/Label.pm would be sufficiant.
>
> Am I missing something important other than tests? :-)
>
>
> 1: http://en.wikipedia.org/wiki/EAN-13
> 2: http://en.wikipedia.org/wiki/UPC-A
>
By the way... we are using EAN13 in Koha 2.2.x without problems:)
All 13-digits are saved in barcode field, to print barcodes we are using 
php class;)

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