[1023] | 1 | ###########################################################################
|
---|
| 2 | #
|
---|
| 3 | # NpepaList.pm -- website plugin
|
---|
| 4 | #
|
---|
| 5 | # A component of the Greenstone digital library software
|
---|
| 6 | # from the New Zealand Digital Library Project at the
|
---|
| 7 | # University of Waikato, New Zealand.
|
---|
| 8 | #
|
---|
| 9 | # Copyright (C) 1999 New Zealand Digital Library Project
|
---|
| 10 | #
|
---|
| 11 | # This program is free software; you can redistribute it and/or modify
|
---|
| 12 | # it under the terms of the GNU General Public License as published by
|
---|
| 13 | # the Free Software Foundation; either version 2 of the License, or
|
---|
| 14 | # (at your option) any later version.
|
---|
| 15 | #
|
---|
| 16 | # This program is distributed in the hope that it will be useful,
|
---|
| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 19 | # GNU General Public License for more details.
|
---|
| 20 | #
|
---|
| 21 | # You should have received a copy of the GNU General Public License
|
---|
| 22 | # along with this program; if not, write to the Free Software
|
---|
| 23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
| 24 | #
|
---|
| 25 | ###########################################################################
|
---|
| 26 |
|
---|
| 27 | # There should probably be a general classifier to do this kind of stuff
|
---|
| 28 |
|
---|
| 29 | package NPepaList;
|
---|
| 30 |
|
---|
| 31 | sub new {
|
---|
| 32 | my ($class, @options) = @_;
|
---|
| 33 |
|
---|
| 34 | return bless {
|
---|
| 35 | 'list'=>{},
|
---|
| 36 | 'metaname' => 'Series',
|
---|
| 37 | 'sortname' => 'Date'
|
---|
| 38 | }, $class;
|
---|
| 39 | }
|
---|
| 40 |
|
---|
| 41 | sub init {
|
---|
| 42 | my $self = shift (@_);
|
---|
| 43 |
|
---|
| 44 | $self->{'list'} = {};
|
---|
| 45 | }
|
---|
| 46 |
|
---|
| 47 |
|
---|
| 48 | sub classify {
|
---|
| 49 | my $self = shift (@_);
|
---|
| 50 | my ($doc_obj) = @_;
|
---|
| 51 |
|
---|
| 52 | my $doc_OID = $doc_obj->get_OID();
|
---|
| 53 |
|
---|
| 54 | # want to ignore abstracts
|
---|
| 55 | my $doctype = $doc_obj->get_metadata_element($doc_obj->get_top_section(), 'doctype');
|
---|
| 56 | return if (defined $doctype && $doctype eq 'Description');
|
---|
| 57 |
|
---|
| 58 | my $date = $doc_obj->get_metadata_element($doc_obj->get_top_section(),
|
---|
| 59 | $self->{'sortname'});
|
---|
| 60 | # commentaries have no date but we want them to sort to the top
|
---|
| 61 | $date = '00000000' unless defined $date;
|
---|
| 62 |
|
---|
| 63 | my $series = $doc_obj->get_metadata_element ($doc_obj->get_top_section(),
|
---|
| 64 | $self->{'metaname'});
|
---|
| 65 |
|
---|
| 66 | if (defined $series) {
|
---|
| 67 | if (!defined $self->{'list'}->{$series}) {
|
---|
| 68 | $self->{'list'}->{$series} = {};
|
---|
| 69 | }
|
---|
| 70 | if (defined $self->{'list'}->{$series}->{$doc_OID}) {
|
---|
| 71 | print STDERR "WARNING: NPepaList::classify called multiple times for $doc_OID\n";
|
---|
| 72 | }
|
---|
| 73 | $self->{'list'}->{$series}->{$doc_OID} = $date;
|
---|
| 74 | } else {
|
---|
| 75 | print STDERR "WARNING: NpepaList::classify $doc_OID has no Series metadata\n";
|
---|
| 76 | }
|
---|
| 77 | }
|
---|
| 78 |
|
---|
| 79 |
|
---|
[4413] | 80 | sub bydate {
|
---|
| 81 | # series names are expected to end with their date
|
---|
| 82 | my ($adate) = $a =~ /([\d-]+)$/;
|
---|
| 83 | my ($bdate) = $b =~ /([\d-]+)$/;
|
---|
| 84 | $adate =~ s/-\d+$//;
|
---|
| 85 | $bdate =~ s/-\d+$//;
|
---|
| 86 | return $adate <=> $bdate;
|
---|
| 87 | }
|
---|
| 88 |
|
---|
[1023] | 89 | sub get_classify_info {
|
---|
| 90 | my $self = shift (@_);
|
---|
| 91 |
|
---|
| 92 | my $classifyinfo = $self->get_entry ('Series', 'VList', 'Invisible');
|
---|
| 93 |
|
---|
[4413] | 94 | foreach $series (sort bydate keys %{$self->{'list'}}) {
|
---|
[1023] | 95 | my $cinfo = $self->get_entry ($series, 'VList');
|
---|
| 96 | foreach $OID (sort {$self->{'list'}->{$series}->{$a}
|
---|
| 97 | cmp $self->{'list'}->{$series}->{$b};} keys %{$self->{'list'}->{$series}}) {
|
---|
| 98 | push (@{$cinfo->{'contains'}}, {'OID'=>$OID});
|
---|
| 99 | }
|
---|
| 100 | push (@{$classifyinfo->{'contains'}}, $cinfo);
|
---|
| 101 | }
|
---|
| 102 |
|
---|
| 103 | return $classifyinfo;
|
---|
| 104 | }
|
---|
| 105 |
|
---|
| 106 | sub get_entry {
|
---|
| 107 | my $self = shift (@_);
|
---|
| 108 | my ($title, $childtype, $thistype) = @_;
|
---|
| 109 |
|
---|
| 110 | # organise into classification structure
|
---|
| 111 | my %classifyinfo = ('childtype'=>$childtype,
|
---|
| 112 | 'Title'=>$title,
|
---|
| 113 | 'contains'=>[]);
|
---|
| 114 | $classifyinfo{'thistype'} = $thistype
|
---|
| 115 | if defined $thistype && $thistype =~ /\w/;
|
---|
| 116 |
|
---|
| 117 | return \%classifyinfo;
|
---|
| 118 | }
|
---|
| 119 |
|
---|
| 120 | 1;
|
---|