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package WebPAC::Input::ISIS; |
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|
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use warnings; |
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use strict; |
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|
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require Exporter; |
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use vars qw/@ISA @EXPORT/; |
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@ISA = qw/Exporter/; |
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@EXPORT = qw/init open_db fetch_rec/; |
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|
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use blib; |
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use WebPAC::Input; |
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#use base qw/WebPAC::Input/; |
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|
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=head1 NAME |
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|
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WebPAC::Input::ISIS - support for CDS/ISIS database files |
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|
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=head1 VERSION |
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|
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Version 0.03 |
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|
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=cut |
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|
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our $VERSION = '0.03'; |
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|
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|
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=head1 SYNOPSIS |
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|
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Open CDS/ISIS, WinISIS or IsisMarc database using C<Biblio::Isis> or |
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C<OpenIsis> module and read all records to memory. |
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|
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my $isis = new WebPAC::Input::ISIS(); |
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$isis->open( path => '/path/to/ISIS/ISIS' ); |
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|
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=head1 FUNCTIONS |
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|
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=head2 init |
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|
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Autoconfigure this module to use C<Biblio::Isis> or C<OpenIsis>. |
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|
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=cut |
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|
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sub init { |
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my $self = shift; |
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|
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eval "use Biblio::Isis 0.13;"; |
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unless ($@) { |
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$self->{have_biblio_isis} = 1 |
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} else { |
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eval "use OpenIsis;"; |
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$self->{have_openisis} = 1 unless ($@); |
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} |
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} |
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|
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=head2 open_db |
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|
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Returns handle to database |
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|
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my $db = $open_db( |
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path => '/path/to/LIBRI' |
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} |
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|
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=cut |
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|
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sub open_db { |
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my $self = shift; |
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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 ISIS database '$arg->{path}'"); |
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|
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my ($isis_db,$db_size); |
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|
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if ($self->{have_openisis}) { |
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$log->debug("using OpenIsis perl bindings"); |
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$isis_db = OpenIsis::open($arg->{path}); |
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$db_size = OpenIsis::maxRowid( $isis_db ) || 1; |
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} elsif ($self->{have_biblio_isis}) { |
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$log->debug("using Biblio::Isis"); |
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use Biblio::Isis; |
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$isis_db = new Biblio::Isis( |
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isisdb => $arg->{path}, |
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include_deleted => 1, |
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hash_filter => sub { |
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my $l = shift || return; |
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$l = $self->{iconv}->convert($l) if ($self->{iconv}); |
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return $l; |
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}, |
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) or $log->logdie("can't find database $arg->{path}"); |
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|
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$db_size = $isis_db->count; |
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|
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} else { |
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$log->logdie("Can't find supported ISIS library for perl. I suggent that you install Bilbio::Isis from CPAN."); |
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} |
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|
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return ($isis_db, $db_size); |
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} |
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|
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=head2 fetch_rec |
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|
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Return record with ID C<$mfn> from database |
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|
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my $rec = $self->fetch_rec( $db, $mfn ); |
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|
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} |
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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 $self = shift; |
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|
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my ($isis_db, $mfn) = @_; |
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|
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my $rec; |
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|
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if ($self->{have_openisis}) { |
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|
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# read record using OpenIsis |
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my $row = OpenIsis::read( $isis_db, $mfn ); |
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|
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# convert record to hash |
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foreach my $k (keys %{$row}) { |
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if ($k ne "mfn") { |
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foreach my $l (@{$row->{$k}}) { |
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$l = $self->{iconv}->convert($l) if ($self->{iconv}); |
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# has subfields? |
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my $val; |
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if ($l =~ m/\^/) { |
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foreach my $t (split(/\^/,$l)) { |
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next if (! $t); |
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$val->{substr($t,0,1)} = substr($t,1); |
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} |
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} else { |
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$val = $l; |
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} |
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push @{$rec->{$k}}, $val; |
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} |
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} else { |
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push @{$rec->{'000'}}, $mfn; |
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} |
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} |
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|
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} elsif ($self->{have_biblio_isis}) { |
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$rec = $isis_db->to_hash($mfn); |
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} else { |
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$self->_get_logger()->logdie("hum? implementation missing?"); |
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} |
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|
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return $rec; |
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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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|
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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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|
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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::ISIS |
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