package Catmandu::Fix::marc_add;
use Catmandu::Sane;
use Catmandu::Util qw(:is);
use Moo;
use Catmandu::Fix::Has;
with 'Catmandu::Fix::Inlineable';
our $VERSION = '0.219';
has marc_tag => (fix_arg => 1);
has subfields => (fix_arg => 'collect');
sub fix {
my ($self, $data) = @_;
my $marc_tag = $self->marc_tag;
my @subfields = @{$self->subfields};
my %subfields = @subfields;
my $record_key = $subfields{'-record'} // 'record';
my $marc = $data->{$record_key} // [];
if ($marc_tag =~ /^\w{3}$/) {
my @field = ();
push @field , $marc_tag;
push @field , $subfields{ind1} // ' ';
push @field , $subfields{ind2} // ' ';
for (my $i = 0 ; $i < @subfields ; $i += 2) {
my $code = $subfields[$i];
next unless length $code == 1;
my $value = $subfields[$i+1];
if ($value =~ /^\$\.(\S+)$/) {
my $path = $1;
$value = Catmandu::Util::data_at($path,$data);
}
if (is_array_ref $value) {
for (@$value) {
push @field , $code;
push @field , $_;
}
}
elsif (is_hash_ref $value) {
for (keys %$value) {
push @field , $code;
push @field , $value->{$_};
}
}
elsif (is_value($value) && length($value) > 0) {
push @field , $code;
push @field , $value;
}
}
push @{ $marc } , \@field if @field > 3;
}
$data->{$record_key} = $marc;
$data;
}
=head1 NAME
Catmandu::Fix::marc_add - add new fields to marc
=head1 SYNOPSIS
# Set literal values
marc_add('900', a, 'test' , 'b', test)
marc_add('900', ind1 , ' ' , a, 'test' , 'b', test)
marc_add('900', ind1 , ' ' , a, 'test' , 'b', test , record:record2)
# Copy data from an other field (when the field value is an array, the
# subfield will be repeated)
marc_add('900', a, '$.my.data.field')
=head1 DESCRIPTION
Add a new subfield to MARC record.
=head1 SEE ALSO
L<Catmandu::Fix>
=cut
1;