165 lines
3.8 KiB
Perl
165 lines
3.8 KiB
Perl
package Koha::Biblio::Metadata::Extractor::MARC::MARC21;
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# Copyright Koha Development Team 2023
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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 <https://www.gnu.org/licenses>.
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=head1 NAME
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Koha::Biblio::Metadata::Extractor::MARC::MARC21 - Extract specific metadata from MARC21 MARC::Record objects
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=cut
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use Modern::Perl;
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use base qw(Koha::Biblio::Metadata::Extractor::MARC);
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use Koha::Exceptions;
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=head1 API
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=head2 Class methods
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=head3 new
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my $extractor = Koha::Biblio::Metadata::Extractor::MARC::MARC21->new;
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Constructor for the I<Koha::Biblio::Metadata::Extractor::MARC::MARC21> class.
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=cut
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sub new {
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my ( $class, $params ) = @_;
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return
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bless $params,
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$class;
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}
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=head2 get_normalized_upc
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my $normalized_upc = $extractor->get_normalized_upc();
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Returns a normalized UPC.
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=cut
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sub get_normalized_upc {
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my ($self) = @_;
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my $record = $self->metadata;
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my @fields = $record->field('024');
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foreach my $field (@fields) {
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my $indicator = $field->indicator(1);
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my $normalized_upc = $self->_normalize_string( $field->subfield('a') );
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if ( $normalized_upc && $indicator eq "1" ) {
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return $normalized_upc;
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}
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}
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}
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=head2 get_normalized_ean
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my $normalized_ean = $extractor->get_normalized_ean();
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Returns a normalized EAN from 024$a with indicator 1 = 3.
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=cut
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sub get_normalized_ean {
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my ($self) = @_;
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my $record = $self->metadata;
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my @fields = $record->field('024');
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foreach my $field (@fields) {
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my $indicator = $field->indicator(1);
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my $ean = $self->_normalize_string( $field->subfield('a') );
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if ( $ean && $indicator eq '3' ) {
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return $ean;
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}
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}
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return;
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}
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=head2 check_fixed_length
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my $info = $extractor->check_fixed_length;
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Returns a hash containing passed and failed fixed-length control fields.
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=cut
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sub check_fixed_length {
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my $self = shift;
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my $len_ok = {
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'005' => 16,
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'006' => 18,
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'007' => {
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a => 8,
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c => [ 6, 14 ],
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d => 6,
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f => 10,
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g => 9,
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h => 13,
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k => 6,
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m => [ 8, 23 ],
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o => 2,
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q => 2,
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r => 11,
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s => 14,
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t => 2,
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v => 9,
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z => 2,
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},
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'008' => 40,
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};
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my $record = $self->metadata;
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my $result = { passed => [], failed => [] };
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foreach my $field ( $record->field( '005', '006', '007', '008' ) ) {
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my ( $length, $pass );
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if ( $field->tag ne '007' ) {
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$length = $len_ok->{ $field->tag };
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$pass = length( $field->data ) eq $length;
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} else {
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my $pos_0 = substr( $field->data, 0, 1 );
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$length = $len_ok->{ $field->tag }->{$pos_0};
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if ( ref($length) eq 'ARRAY' ) {
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$pass = grep { $_ eq length( $field->data ) } @$length;
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} else {
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$pass = length( $field->data ) eq $length;
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}
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}
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push @{ $result->{passed} }, $field->tag if $pass;
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push @{ $result->{failed} }, $field->tag unless $pass;
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}
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return $result;
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}
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=head1 AUTHOR
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Tomas Cohen Arazi, E<lt>tomascohen@theke.ioE<gt>
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Jonathan Druart, E<lt>jonathan.druart@bugs.koha-community.orgE<gt>
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=cut
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1;
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__END__
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