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|
=head1 NAME
Catmandu::Importer::MARC::ALEPHSEQ - Package that imports Ex Libris' Aleph sequential MARC records
=head1 SYNOPSIS
# From the command line
$ catmandu convert MARC --type ALEPHSEQ --fix "marc_map('245a','title')" < /foo/usm01.txt
# From perl
use Catmandu;
# import records from file
my $importer = Catmandu->importer('MARC',file => '/foo/usm01.txt' , type => 'ALEPHSEQ');
my $fixer = Catmandu->fixer("marc_map('245a','title')");
$importer->each(sub {
my $item = shift;
...
});
# or using the fixer
$fixer->fix($importer)->each(sub {
my $item = shift;
printf "title: %s\n" , $item->{title};
});
=head1 CONFIGURATION
=over
=item file
Read input from a local file given by its path. Alternatively a scalar
reference can be passed to read from a string.
=item fh
Read input from an L<IO::Handle>. If not specified, L<Catmandu::Util::io> is used to
create the input stream from the C<file> argument or by using STDIN.
=item encoding
Binmode of the input stream C<fh>. Set to C<:utf8> by default.
=item fix
An ARRAY of one or more fixes or file scripts to be applied to imported items.
=back
=head1 METHODS
Every Catmandu::Importer is a Catmandu::Iterable all its methods are inherited.
=head1 SEE ALSO
L<Catmandu::Importer>,
L<Catmandu::Iterable>
=cut
package Catmandu::Importer::MARC::ALEPHSEQ;
use Catmandu::Sane;
use Moo;
our $VERSION = '1.32';
with 'Catmandu::Importer';
sub generator {
my $self = shift;
sub {
state $fh = $self->fh;
state $prev_id;
state $record = [];
while(<$fh>) {
chop;
next unless (length $_ >= 18);
my ($sysid,$s1,$tag,$ind1,$ind2,$s2,$char,$s3,$data) = unpack("A9A1A3A1A1A1A1A1U0A*",$_);
unless ($tag =~ m{^[0-9A-Z]+}o) {
warn "skipping $sysid $tag unknown tag";
next;
}
unless ($ind1 =~ m{^[A-Za-z0-9-]$}o) {
$ind1 = " ";
}
unless ($ind2 =~ m{^[A-Za-z0-9-]$}o) {
$ind2 = " ";
}
unless (utf8::decode($data)) {
warn "skipping $sysid $tag unknown data";
next;
}
if ($tag eq 'LDR' || $tag eq '008') {
$data =~ s/\^/ /g;
}
my @parts = ('_' , split(/\$\$(.)/, $data) );
# All control-fields contain an underscore field containing the data
# all other fields not.
unless ($tag =~ /^FMT|LDR|00.$/o) {
shift @parts;
shift @parts;
}
# If we have an empty subfield at the end, then we need to add a implicit empty value
push(@parts,'') unless int(@parts) % 2 == 0;
if (@$record > 0 && $tag eq 'FMT') {
my $result = { _id => $prev_id , record => [ @$record ] };
$record = [[$tag, $ind1, $ind2, @parts]];
$prev_id = $sysid;
return $result;
}
push @$record, [$tag, $ind1, $ind2, @parts];
$prev_id = $sysid;
}
if (@$record > 0) {
my $result = { _id => $prev_id , record => [ @$record ] };
$record = [];
return $result;
}
else {
return;
}
};
}
1;
|
