WebPAC/Input/ISIS.pm

package WebPAC::Input::ISIS;

use warnings;
use strict;

use blib;

use WebPAC::Input;
use base qw/WebPAC::Input/;

=head1 NAME

WebPAC::Input::ISIS - support for CDS/ISIS database files

=head1 VERSION

Version 0.02

=cut

our $VERSION = '0.02';


=head1 SYNOPSIS

Open CDS/ISIS, WinISIS or IsisMarc database using C<Biblio::Isis> or
C<OpenIsis> module and read all records to memory.

 my $isis = new WebPAC::Input::ISIS();
 $isis->open( path => '/path/to/ISIS/ISIS' );

=head1 FUNCTIONS

=head2 init

Autoconfigure this module to use C<Biblio::Isis> or C<OpenIsis>.

=cut

sub init {
        my $self = shift;

        eval "use Biblio::Isis 0.13;";
        unless ($@) { 
                $self->{have_biblio_isis} = 1
        } else {
                eval "use OpenIsis;";
                $self->{have_openisis} = 1 unless ($@);
        }
}

=head2 open_db

Returns handle to database

  my $db = $open_db(
        path => '/path/to/LIBRI'
  }

=cut

sub open_db {
        my $self = shift;

        my $arg = {@_};

        my $log = $self->_get_logger();

        $log->info("opening ISIS database '$arg->{path}'");

        my ($isis_db,$db_size);

        if ($self->{have_openisis}) {
                $log->debug("using OpenIsis perl bindings");
                $isis_db = OpenIsis::open($arg->{path});
                $db_size = OpenIsis::maxRowid( $isis_db ) || 1;
        } elsif ($self->{have_biblio_isis}) {
                $log->debug("using Biblio::Isis");
                use Biblio::Isis;
                $isis_db = new Biblio::Isis(
                        isisdb => $arg->{path},
                        include_deleted => 1,
                        hash_filter => sub {
                                my $l = shift || return;
                                $l = $self->{iconv}->convert($l) if ($self->{iconv});
                                return $l;
                        },
                ) or $log->logdie("can't find database $arg->{path}");

                $db_size = $isis_db->count;

        } else {
                $log->logdie("Can't find supported ISIS library for perl. I suggent that you install Bilbio::Isis from CPAN.");
        }

        return ($isis_db, $db_size);
}

=head2 fetch_rec

Return record with ID C<$mfn> from database

  my $rec = $self->fetch_rec( $db, $mfn );

}

=cut

sub fetch_rec {
        my $self = shift;

        my ($isis_db, $mfn) = @_;

        my $rec;

        if ($self->{have_openisis}) {

                # read record using OpenIsis
                my $row = OpenIsis::read( $isis_db, $mfn );

                # convert record to hash
                foreach my $k (keys %{$row}) {
                        if ($k ne "mfn") {
                                foreach my $l (@{$row->{$k}}) {
                                        $l = $self->{iconv}->convert($l) if ($self->{iconv});
                                        # has subfields?
                                        my $val;
                                        if ($l =~ m/\^/) {
                                                foreach my $t (split(/\^/,$l)) {
                                                        next if (! $t);
                                                        $val->{substr($t,0,1)} = substr($t,1);
                                                }
                                        } else {
                                                $val = $l;
                                        }
                                        push @{$rec->{$k}}, $val;
                                }
                        } else {
                                push @{$rec->{'000'}}, $mfn;
                        }
                }

        } elsif ($self->{have_biblio_isis}) {
                $rec = $isis_db->to_hash($mfn);
        } else {
                $self->_get_logger()->logdie("hum? implementation missing?");
        }

        return $rec;
}

=head1 AUTHOR

Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>

=head1 COPYRIGHT & LICENSE

Copyright 2005 Dobrica Pavlinusic, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=cut

1; # End of WebPAC::Input::ISIS
1	dpavlin	6	package WebPAC::Input::ISIS;
2
3			use warnings;
4			use strict;
5
6	dpavlin	285	use blib;
7	dpavlin	6
8	dpavlin	285	use WebPAC::Input;
9			use base qw/WebPAC::Input/;
10
11	dpavlin	6	=head1 NAME
12
13	dpavlin	285	WebPAC::Input::ISIS - support for CDS/ISIS database files
14	dpavlin	6
15			=head1 VERSION
16
17	dpavlin	285	Version 0.02
18	dpavlin	6
19			=cut
20
21	dpavlin	285	our $VERSION = '0.02';
22	dpavlin	6
23
24			=head1 SYNOPSIS
25
26	dpavlin	285	Open CDS/ISIS, WinISIS or IsisMarc database using C<Biblio::Isis> or
27			C<OpenIsis> module and read all records to memory.
28	dpavlin	6
29			my $isis = new WebPAC::Input::ISIS();
30	dpavlin	285	$isis->open( path => '/path/to/ISIS/ISIS' );
31	dpavlin	6
32			=head1 FUNCTIONS
33
34	dpavlin	285	=head2 init
35	dpavlin	6
36	dpavlin	285	Autoconfigure this module to use C<Biblio::Isis> or C<OpenIsis>.
37	dpavlin	6
38	dpavlin	285	=cut
39	dpavlin	6
40	dpavlin	285	sub init {
41			my $self = shift;
42	dpavlin	6
43	dpavlin	285	eval "use Biblio::Isis 0.13;";
44			unless ($@) {
45			$self->{have_biblio_isis} = 1
46			} else {
47			eval "use OpenIsis;";
48			$self->{have_openisis} = 1 unless ($@);
49			}
50			}
51	dpavlin	6
52	dpavlin	285	=head2 open_db
53	dpavlin	6
54	dpavlin	285	Returns handle to database
55	dpavlin	6
56	dpavlin	285	my $db = $open_db(
57			path => '/path/to/LIBRI'
58			}
59
60	dpavlin	6	=cut
61
62	dpavlin	285	sub open_db {
63	dpavlin	6	my $self = shift;
64	dpavlin	285
65	dpavlin	6	my $arg = {@_};
66
67			my $log = $self->_get_logger();
68
69	dpavlin	285	$log->info("opening ISIS database '$arg->{path}'");
70	dpavlin	6
71	dpavlin	21	my ($isis_db,$db_size);
72	dpavlin	6
73	dpavlin	285	if ($self->{have_openisis}) {
74	dpavlin	6	$log->debug("using OpenIsis perl bindings");
75	dpavlin	285	$isis_db = OpenIsis::open($arg->{path});
76	dpavlin	21	$db_size = OpenIsis::maxRowid( $isis_db ) \|\| 1;
77	dpavlin	285	} elsif ($self->{have_biblio_isis}) {
78	dpavlin	6	$log->debug("using Biblio::Isis");
79			use Biblio::Isis;
80			$isis_db = new Biblio::Isis(
81	dpavlin	285	isisdb => $arg->{path},
82	dpavlin	6	include_deleted => 1,
83			hash_filter => sub {
84			my $l = shift \|\| return;
85	dpavlin	285	$l = $self->{iconv}->convert($l) if ($self->{iconv});
86	dpavlin	6	return $l;
87			},
88	dpavlin	285	) or $log->logdie("can't find database $arg->{path}");
89	dpavlin	265
90	dpavlin	21	$db_size = $isis_db->count;
91	dpavlin	6
92			} else {
93			$log->logdie("Can't find supported ISIS library for perl. I suggent that you install Bilbio::Isis from CPAN.");
94			}
95
96	dpavlin	285	return ($isis_db, $db_size);
97			}
98	dpavlin	6
99	dpavlin	285	=head2 fetch_rec
100	dpavlin	6
101	dpavlin	285	Return record with ID C<$mfn> from database
102	dpavlin	6
103	dpavlin	285	my $rec = $self->fetch_rec( $db, $mfn );
104	dpavlin	6
105	dpavlin	285	}
106	dpavlin	21
107	dpavlin	285	=cut
108	dpavlin	6
109	dpavlin	285	sub fetch_rec {
110			my $self = shift;
111	dpavlin	6
112	dpavlin	285	my ($isis_db, $mfn) = @_;
113	dpavlin	6
114	dpavlin	285	my $rec;
115	dpavlin	6
116	dpavlin	285	if ($self->{have_openisis}) {
117	dpavlin	6
118	dpavlin	285	# read record using OpenIsis
119			my $row = OpenIsis::read( $isis_db, $mfn );
120	dpavlin	6
121	dpavlin	285	# convert record to hash
122			foreach my $k (keys %{$row}) {
123			if ($k ne "mfn") {
124			foreach my $l (@{$row->{$k}}) {
125			$l = $self->{iconv}->convert($l) if ($self->{iconv});
126			# has subfields?
127			my $val;
128			if ($l =~ m/\^/) {
129			foreach my $t (split(/\^/,$l)) {
130			next if (! $t);
131			$val->{substr($t,0,1)} = substr($t,1);
132	dpavlin	6	}
133	dpavlin	285	} else {
134			$val = $l;
135	dpavlin	6	}
136	dpavlin	285	push @{$rec->{$k}}, $val;
137	dpavlin	6	}
138	dpavlin	285	} else {
139			push @{$rec->{'000'}}, $mfn;
140	dpavlin	6	}
141			}
142
143	dpavlin	285	} elsif ($self->{have_biblio_isis}) {
144			$rec = $isis_db->to_hash($mfn);
145	dpavlin	6	} else {
146	dpavlin	285	$self->_get_logger()->logdie("hum? implementation missing?");
147	dpavlin	6	}
148
149	dpavlin	285	return $rec;
150	dpavlin	6	}
151
152			=head1 AUTHOR
153
154			Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
155
156			=head1 COPYRIGHT & LICENSE
157
158			Copyright 2005 Dobrica Pavlinusic, All Rights Reserved.
159
160			This program is free software; you can redistribute it and/or modify it
161			under the same terms as Perl itself.
162
163			=cut
164
165			1; # End of WebPAC::Input::ISIS