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package WebPAC::Input::MARC; |
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|
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use warnings; |
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use strict; |
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|
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use MARC::Fast; |
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use base qw/WebPAC::Common/; |
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use Carp qw/confess/; |
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|
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=head1 NAME |
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|
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WebPAC::Input::MARC - support for MARC database files |
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|
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=head1 VERSION |
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|
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Version 0.09 |
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|
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=cut |
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|
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our $VERSION = '0.09'; |
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|
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|
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=head1 SYNOPSIS |
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|
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Open USMARC, Unimarc or any other file format that has same internal |
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structure using C<MARC::Fast>. |
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|
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my $marc = new WebPAC::Input::MARC( |
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path => '/path/to/marc.iso' |
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); |
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|
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=head1 FUNCTIONS |
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|
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=head2 new |
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|
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Returns new low-level input API object |
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|
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my $marc = new WebPAC::Input::MARC( |
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path => '/path/to/marc.iso', |
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} |
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|
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=cut |
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|
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sub new { |
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my $class = shift; |
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my $self = {@_}; |
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bless($self, $class); |
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|
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my $arg = {@_}; |
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|
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my $log = $self->_get_logger(); |
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|
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$log->info("opening MARC database '$arg->{path}'"); |
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|
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die "no filter support any more!" if $arg->{filter}; |
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|
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my $db = new MARC::Fast( |
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marcdb => $arg->{path}, |
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hash_filter => sub { |
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my ( $l, $nr ) = @_; |
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Encode::decode( 'utf-8', $l ); |
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}, |
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); |
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my $db_size = $db->count - 1; # FIXME |
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|
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$self->{_marc_size} = $db_size; |
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$self->{_marc_db} = $db; |
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|
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$self ? return $self : return undef; |
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} |
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|
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=head2 fetch_rec |
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|
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Return record with ID C<$mfn> from database |
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|
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my $rec = $self->fetch_rec( $mfn ); |
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|
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=cut |
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|
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sub fetch_rec { |
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my $self = shift; |
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|
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my $mfn = shift; |
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|
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if ($mfn > $self->{_marc_size}) { |
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$self->_get_logger()->warn("seek beyond database size $self->{_marc_size} to $mfn"); |
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} else { |
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my $marc = $self->{_marc_db} || confess "no _marc_db?"; |
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my $row = $marc->to_hash($mfn, include_subfields => 1); |
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push @{$row->{'000'}}, $mfn; |
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push @{$row->{'leader'}}, $marc->last_leader; |
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return $row; |
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} |
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} |
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|
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=head2 dump_ascii |
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|
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Return ASCII dump of record with ID C<$mfn> from database |
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|
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print $self->dump_ascii( $mfn ); |
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|
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=cut |
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|
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sub dump_ascii { |
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my $self = shift; |
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|
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my $mfn = shift; |
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return $self->{_marc_db}->to_ascii($mfn); |
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} |
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|
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=head2 size |
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Return number of records in database |
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|
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my $size = $isis->size; |
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|
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=cut |
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|
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sub size { |
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my $self = shift; |
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return $self->{_marc_size}; |
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} |
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|
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=head1 AUTHOR |
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|
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Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >> |
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=head1 COPYRIGHT & LICENSE |
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|
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Copyright 2005 Dobrica Pavlinusic, All Rights Reserved. |
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This program is free software; you can redistribute it and/or modify it |
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under the same terms as Perl itself. |
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|
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=cut |
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|
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1; # End of WebPAC::Input::MARC |
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