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58 lines
1.5 KiB
58 lines
1.5 KiB
package C4::Barcodes::EAN13;
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# Copyright 2012 Koha Development team
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# Koha is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Koha; if not, see <http://www.gnu.org/licenses>.
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use strict;
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use warnings;
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use C4::Context;
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use C4::Debug;
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use Algorithm::CheckDigits;
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use Carp;
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use vars qw(@ISA);
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use vars qw($debug $cgi_debug); # from C4::Debug, of course
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BEGIN {
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@ISA = qw(C4::Barcodes);
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}
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sub parse {
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my $self = shift;
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my $barcode = (@_) ? shift : $self->value;
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my $ean = CheckDigits('ean');
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if ( $ean->is_valid($barcode) ) {
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return ( '', $ean->basenumber($barcode), $ean->checkdigit($barcode) );
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} else {
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carp "$barcode not valid EAN-13 barcode";
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return ( '', $barcode, '' );
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}
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}
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sub process_tail {
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my ( $self,$tail,$whole,$specific ) = @_;
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my $ean = CheckDigits('ean');
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my $full = $ean->complete($whole);
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my $chk = $ean->checkdigit($full);
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$debug && warn "# process_tail $tail -> $chk [$whole -> $full] $specific";
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return $chk;
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}
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1;
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__END__
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