WebPAC/Input/ISIS.pm

package WebPAC::Input::ISIS;

use warnings;
use strict;

use blib;
use WebPAC::Input;

=head1 NAME

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

=head1 VERSION

Version 0.03

=cut

our $VERSION = '0.03';


=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			use WebPAC::Input;
8
9	dpavlin	6	=head1 NAME
10
11	dpavlin	285	WebPAC::Input::ISIS - support for CDS/ISIS database files
12	dpavlin	6
13			=head1 VERSION
14
15	dpavlin	286	Version 0.03
16	dpavlin	6
17			=cut
18
19	dpavlin	286	our $VERSION = '0.03';
20	dpavlin	6
21
22			=head1 SYNOPSIS
23
24	dpavlin	285	Open CDS/ISIS, WinISIS or IsisMarc database using C<Biblio::Isis> or
25			C<OpenIsis> module and read all records to memory.
26	dpavlin	6
27			my $isis = new WebPAC::Input::ISIS();
28	dpavlin	285	$isis->open( path => '/path/to/ISIS/ISIS' );
29	dpavlin	6
30			=head1 FUNCTIONS
31
32	dpavlin	285	=head2 init
33	dpavlin	6
34	dpavlin	285	Autoconfigure this module to use C<Biblio::Isis> or C<OpenIsis>.
35	dpavlin	6
36	dpavlin	285	=cut
37	dpavlin	6
38	dpavlin	285	sub init {
39			my $self = shift;
40	dpavlin	6
41	dpavlin	285	eval "use Biblio::Isis 0.13;";
42			unless ($@) {
43			$self->{have_biblio_isis} = 1
44			} else {
45			eval "use OpenIsis;";
46			$self->{have_openisis} = 1 unless ($@);
47			}
48			}
49	dpavlin	6
50	dpavlin	285	=head2 open_db
51	dpavlin	6
52	dpavlin	285	Returns handle to database
53	dpavlin	6
54	dpavlin	285	my $db = $open_db(
55			path => '/path/to/LIBRI'
56			}
57
58	dpavlin	6	=cut
59
60	dpavlin	285	sub open_db {
61	dpavlin	6	my $self = shift;
62	dpavlin	285
63	dpavlin	6	my $arg = {@_};
64
65			my $log = $self->_get_logger();
66
67	dpavlin	285	$log->info("opening ISIS database '$arg->{path}'");
68	dpavlin	6
69	dpavlin	21	my ($isis_db,$db_size);
70	dpavlin	6
71	dpavlin	285	if ($self->{have_openisis}) {
72	dpavlin	6	$log->debug("using OpenIsis perl bindings");
73	dpavlin	285	$isis_db = OpenIsis::open($arg->{path});
74	dpavlin	21	$db_size = OpenIsis::maxRowid( $isis_db ) \|\| 1;
75	dpavlin	285	} elsif ($self->{have_biblio_isis}) {
76	dpavlin	6	$log->debug("using Biblio::Isis");
77			use Biblio::Isis;
78			$isis_db = new Biblio::Isis(
79	dpavlin	285	isisdb => $arg->{path},
80	dpavlin	6	include_deleted => 1,
81			hash_filter => sub {
82			my $l = shift \|\| return;
83	dpavlin	285	$l = $self->{iconv}->convert($l) if ($self->{iconv});
84	dpavlin	6	return $l;
85			},
86	dpavlin	285	) or $log->logdie("can't find database $arg->{path}");
87	dpavlin	265
88	dpavlin	21	$db_size = $isis_db->count;
89	dpavlin	6
90			} else {
91			$log->logdie("Can't find supported ISIS library for perl. I suggent that you install Bilbio::Isis from CPAN.");
92			}
93
94	dpavlin	285	return ($isis_db, $db_size);
95			}
96	dpavlin	6
97	dpavlin	285	=head2 fetch_rec
98	dpavlin	6
99	dpavlin	285	Return record with ID C<$mfn> from database
100	dpavlin	6
101	dpavlin	285	my $rec = $self->fetch_rec( $db, $mfn );
102	dpavlin	6
103	dpavlin	285	}
104	dpavlin	21
105	dpavlin	285	=cut
106	dpavlin	6
107	dpavlin	285	sub fetch_rec {
108			my $self = shift;
109	dpavlin	6
110	dpavlin	285	my ($isis_db, $mfn) = @_;
111	dpavlin	6
112	dpavlin	285	my $rec;
113	dpavlin	6
114	dpavlin	285	if ($self->{have_openisis}) {
115	dpavlin	6
116	dpavlin	285	# read record using OpenIsis
117			my $row = OpenIsis::read( $isis_db, $mfn );
118	dpavlin	6
119	dpavlin	285	# convert record to hash
120			foreach my $k (keys %{$row}) {
121			if ($k ne "mfn") {
122			foreach my $l (@{$row->{$k}}) {
123			$l = $self->{iconv}->convert($l) if ($self->{iconv});
124			# has subfields?
125			my $val;
126			if ($l =~ m/\^/) {
127			foreach my $t (split(/\^/,$l)) {
128			next if (! $t);
129			$val->{substr($t,0,1)} = substr($t,1);
130	dpavlin	6	}
131	dpavlin	285	} else {
132			$val = $l;
133	dpavlin	6	}
134	dpavlin	285	push @{$rec->{$k}}, $val;
135	dpavlin	6	}
136	dpavlin	285	} else {
137			push @{$rec->{'000'}}, $mfn;
138	dpavlin	6	}
139			}
140
141	dpavlin	285	} elsif ($self->{have_biblio_isis}) {
142			$rec = $isis_db->to_hash($mfn);
143	dpavlin	6	} else {
144	dpavlin	285	$self->_get_logger()->logdie("hum? implementation missing?");
145	dpavlin	6	}
146
147	dpavlin	285	return $rec;
148	dpavlin	6	}
149
150			=head1 AUTHOR
151
152			Dobrica Pavlinusic, C<< <dpavlin@rot13.org> >>
153
154			=head1 COPYRIGHT & LICENSE
155
156			Copyright 2005 Dobrica Pavlinusic, All Rights Reserved.
157
158			This program is free software; you can redistribute it and/or modify it
159			under the same terms as Perl itself.
160
161			=cut
162
163			1; # End of WebPAC::Input::ISIS