[4726] | 1 | ###########################################################################
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| 2 | #
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| 3 | # OAIPlug.pm -- basic Open Archives Initiative (OAI) plugin
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| 4 | #
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| 5 | # A component of the Greenstone digital library software
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| 6 | # from the New Zealand Digital Library Project at the
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| 7 | # University of Waikato, New Zealand.
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| 8 | #
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| 9 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 10 | #
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| 11 | # This program is free software; you can redistribute it and/or modify
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| 12 | # it under the terms of the GNU General Public License as published by
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| 13 | # the Free Software Foundation; either version 2 of the License, or
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| 14 | # (at your option) any later version.
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| 15 | #
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| 16 | # This program is distributed in the hope that it will be useful,
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| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | # GNU General Public License for more details.
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| 20 | #
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| 21 | # You should have received a copy of the GNU General Public License
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| 22 | # along with this program; if not, write to the Free Software
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| 23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 24 | #
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| 25 | ###########################################################################
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| 26 |
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[15872] | 27 | package OAIPlugin;
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[4726] | 28 |
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| 29 | use unicode;
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| 30 | use util;
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| 31 |
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[10254] | 32 | use strict;
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| 33 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 34 |
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[15872] | 35 | use ReadXMLFile;
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[17066] | 36 | use ReadTextFile; # needed for subroutine textcat_get_language_encoding
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[17216] | 37 | use metadatautil;
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[9958] | 38 |
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[4726] | 39 | sub BEGIN {
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[17066] | 40 | @OAIPlugin::ISA = ('ReadXMLFile', 'ReadTextFile');
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[4726] | 41 | }
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| 42 |
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[9958] | 43 |
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[6408] | 44 | my $arguments =
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| 45 | [ { 'name' => "process_exp",
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[16013] | 46 | 'desc' => "{BasePlugin.process_exp}",
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[6408] | 47 | 'type' => "regexp",
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| 48 | 'reqd' => "no",
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[17126] | 49 | 'deft' => &get_default_process_exp() }
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[6408] | 50 | ];
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| 51 |
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[15872] | 52 | my $options = { 'name' => "OAIPlugin",
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| 53 | 'desc' => "{OAIPlugin.desc}",
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[6408] | 54 | 'abstract' => "no",
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| 55 | 'inherits' => "yes",
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[17103] | 56 | 'explodes' => "yes",
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[6408] | 57 | 'args' => $arguments };
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[4747] | 58 |
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[10254] | 59 |
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[4726] | 60 | sub new {
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[10218] | 61 | my ($class) = shift (@_);
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| 62 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 63 | push(@$pluginlist, $class);
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[4873] | 64 |
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[15872] | 65 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 66 | push(@{$hashArgOptLists->{"OptList"}},$options);
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[4726] | 67 |
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[17126] | 68 | new ReadTextFile($pluginlist, $inputargs, $hashArgOptLists,1);
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[15872] | 69 | my $self = new ReadXMLFile($pluginlist, $inputargs, $hashArgOptLists);
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[4726] | 70 |
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| 71 | return bless $self, $class;
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| 72 | }
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| 73 |
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| 74 | sub get_default_process_exp {
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| 75 | my $self = shift (@_);
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| 76 |
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| 77 | return q^(?i)(\.oai)$^;
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| 78 | }
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| 79 |
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[13222] | 80 | sub get_doctype {
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| 81 | my $self = shift(@_);
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| 82 |
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| 83 | return "OAI-PMH";
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| 84 | }
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| 85 |
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[9958] | 86 | sub xml_start_document {
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[10254] | 87 | my $self = shift (@_);
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[9958] | 88 | $self->{'in_metadata_node'} = 0;
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| 89 | $self->{'rawxml'} = "";
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| 90 | }
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[4726] | 91 |
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[9958] | 92 | sub xml_end_document {
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| 93 | }
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[4726] | 94 |
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[9958] | 95 | sub xml_doctype {
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| 96 | my $self = shift(@_);
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| 97 |
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| 98 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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| 99 |
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[13886] | 100 | ##die "" if ($name !~ /^OAI-PMH$/);
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[9958] | 101 |
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[4726] | 102 | my $outhandle = $self->{'outhandle'};
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[15872] | 103 | print $outhandle "OAIPlugin: processing $self->{'file'}\n" if $self->{'verbosity'} > 1;
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| 104 | print STDERR "<Processing n='$self->{'file'}' p='OAIPlugin'>\n" if $self->{'gli'};
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[4726] | 105 |
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[9958] | 106 | }
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[4726] | 107 |
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[9958] | 108 |
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| 109 | sub xml_start_tag {
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| 110 | my $self = shift(@_);
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| 111 | my ($expat,$element) = @_;
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| 112 |
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| 113 | my %attr_hash = %_;
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| 114 |
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| 115 | my $attr = "";
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| 116 | map { $attr .= " $_=$attr_hash{$_}"; } keys %attr_hash;
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| 117 |
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| 118 | $self->{'rawxml'} .= "<$element$attr>";
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| 119 |
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| 120 | if ($element eq "metadata") {
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| 121 | $self->{'in_metadata_node'} = 1;
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| 122 | $self->{'metadata_xml'} = "";
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[4726] | 123 | }
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[9958] | 124 |
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| 125 | if ($self->{'in_metadata_node'}) {
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| 126 | $self->{'metadata_xml'} .= "<$element$attr>";
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[4726] | 127 | }
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[9958] | 128 | }
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[4726] | 129 |
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[9958] | 130 | sub xml_end_tag {
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| 131 | my $self = shift(@_);
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| 132 | my ($expat, $element) = @_;
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[4726] | 133 |
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[9958] | 134 | $self->{'rawxml'} .= "</$element>";
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[4726] | 135 |
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[9958] | 136 | if ($self->{'in_metadata_node'}) {
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| 137 | $self->{'metadata_xml'} .= "</$element>";
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[4726] | 138 | }
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| 139 |
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[9958] | 140 | if ($element eq "metadata") {
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| 141 | my $textref = \$self->{'metadata_xml'};
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| 142 | my $metadata = $self->{'metadata'};
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| 143 | $self->extract_oai_metadata($textref,$metadata);
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[4726] | 144 |
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[9958] | 145 | $self->{'in_metadata_node'} = 0;
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| 146 | }
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[4726] | 147 |
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| 148 |
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[9958] | 149 | }
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[4726] | 150 |
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[9958] | 151 | sub xml_text {
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| 152 | my $self = shift(@_);
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| 153 | my ($expat) = @_;
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[8684] | 154 |
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[9958] | 155 | $self->{'rawxml'} .= $_;
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[4726] | 156 |
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[9958] | 157 | if ($self->{'in_metadata_node'}) {
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| 158 | $self->{'metadata_xml'} .= $_;
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[4726] | 159 | }
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[9958] | 160 | }
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[4726] | 161 |
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[8121] | 162 |
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[17216] | 163 | sub metadata_read {
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| 164 | my $self = shift (@_);
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[4726] | 165 |
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[17216] | 166 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $extrametakeys, $extrametadata, $processor, $maxdocs, $gli) = @_;
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[5919] | 167 |
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[17216] | 168 | # can we process this file??
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| 169 | my ($filename_full_path, $filename_no_path) = &util::get_full_filenames($base_dir, $file);
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| 170 | return undef unless $self->can_process_this_file($filename_full_path);
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| 171 |
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| 172 | my $total_count = 0; # is total count used?
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| 173 | if ($self->SUPER::read($pluginfo,$base_dir,$file,$block_hash,$metadata,$processor,$maxdocs,$total_count, $gli)) {
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| 174 | # calling "SUPER::read" at this point sets up $metadata
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| 175 | # data-structure. We can then, later, in OAIPlug::read decide
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| 176 | # whether this $metadata will stick to an accompanying file,
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| 177 | # or else needs a new doc object to be formed that contains
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| 178 | # purely metadata
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| 179 |
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| 180 | $self->{'metadata'} = undef;
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| 181 |
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| 182 | #my $url_array = $metadata->{'gi.Sourcedoc'};
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| 183 | my $url_array = $metadata->{'dc.Identifier'};
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| 184 | my $num_urls = (defined $url_array) ? scalar(@$url_array) : 0;
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| 185 |
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| 186 | my $srcdoc_exists = 0;
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| 187 | my $srcdoc_pos = 0;
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| 188 | my $filename_dir = &util::filename_head($filename_full_path);
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| 189 |
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| 190 | for (my $i=0; $i<$num_urls; $i++) {
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| 191 |
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| 192 | if ($url_array->[$i] !~ m/^(https?|ftp):/) {
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| 193 |
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| 194 | my $src_filename = &util::filename_cat($filename_dir, $url_array->[$i]);
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| 195 |
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| 196 | if (-e $src_filename) {
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| 197 | $srcdoc_pos = $i;
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| 198 | $srcdoc_exists = 1;
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| 199 | last;
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| 200 | }
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| 201 | }
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| 202 | }
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| 203 |
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| 204 |
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| 205 | if ($srcdoc_exists)
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| 206 | {
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| 207 | $self->{'oai-files'}->{$file}->{'srcdoc_exists'} = 1;
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| 208 |
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| 209 | ### print STDERR "**** storing OAI file: $file\n";
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| 210 |
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| 211 | # Make pretty print metadata table stick with src filename
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| 212 | my $ppmd_table = $self->{'ppmd_table'};
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| 213 |
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| 214 | $metadata->{'prettymd'} = [ $ppmd_table ];
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| 215 | $self->{'ppmd_table'} = undef;
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| 216 |
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| 217 | }
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| 218 | else {
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| 219 | $self->{'oai-files'}->{$file}->{'srcdoc_exists'} = 0;
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| 220 | }
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| 221 |
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| 222 | }
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| 223 | else {
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| 224 | return undef;
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| 225 | }
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| 226 | }
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| 227 |
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| 228 |
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[9958] | 229 | sub read {
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| 230 | my $self = shift (@_);
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| 231 |
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[16392] | 232 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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[4726] | 233 |
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[17216] | 234 |
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| 235 | ### print STDERR "**** checking OAI read: $file\n";
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| 236 |
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| 237 | if (defined $self->{'oai-files'}->{$file}) {
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| 238 |
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| 239 | my $srcdoc_exists = $self->{'oai-files'}->{$file}->{'srcdoc_exists'};
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| 240 |
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| 241 | # no more need to access details of this $file => tidy up as you go
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| 242 | delete $self->{'oai-files'}->{$file};
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| 243 |
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| 244 | ### print STDERR "**** !!!!! srcdoc_exists = $srcdoc_exists\n";
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| 245 | if (!$srcdoc_exists)
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| 246 | {
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| 247 |
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| 248 | my $filename = $file;
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| 249 | $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
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| 250 |
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| 251 | # Do encoding stuff on metadata
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| 252 | my ($language, $encoding) = $self->textcat_get_language_encoding ($filename);
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| 253 |
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| 254 | # create a new document
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| 255 | my $doc_obj = new doc ($filename, "indexed_doc");
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| 256 | my $top_section = $doc_obj->get_top_section;
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| 257 | my $plugin_type = $self->{'plugin_type'};
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| 258 |
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| 259 | $doc_obj->add_utf8_metadata($top_section, "Language", $language);
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| 260 | $doc_obj->add_utf8_metadata($top_section, "Encoding", $encoding);
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| 261 | $doc_obj->add_utf8_metadata($top_section, "Plugin", $plugin_type);
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| 262 | $doc_obj->add_metadata($top_section, "FileFormat", "OAI");
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| 263 | $doc_obj->add_metadata($top_section, "FileSize", (-s $filename));
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| 264 |
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| 265 | # include any metadata passed in from previous plugins
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| 266 | # note that this metadata is associated with the top level section
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| 267 | $self->extra_metadata ($doc_obj, $doc_obj->get_top_section(), $metadata);
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| 268 |
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| 269 | # do plugin specific processing of doc_obj
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| 270 | my $textref = \$self->{'rawxml'};
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| 271 | unless (defined ($self->process($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj))) {
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| 272 | print STDERR "<ProcessingError n='$file'>\n" if ($gli);
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| 273 | return -1;
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| 274 | }
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| 275 |
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| 276 | # do any automatic metadata extraction
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| 277 | $self->auto_extract_metadata ($doc_obj);
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| 278 |
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| 279 | # add an OID
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| 280 | $self->add_OID($doc_obj);
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| 281 |
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| 282 | my $prettymds = $self->{'prettymd'};
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| 283 | foreach my $prettymd (@$prettymds) {
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| 284 | $doc_obj->add_utf8_metadata($top_section,"prettymd",$prettymd);
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| 285 | }
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| 286 | $self->{'prettymd'} = undef;
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| 287 |
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| 288 | # process the document
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| 289 | $processor->process($doc_obj);
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| 290 |
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| 291 | $self->{'num_processed'} ++;
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| 292 |
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| 293 | return 1; # processed the file
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| 294 | }
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| 295 | }
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| 296 | else {
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| 297 | return undef;
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| 298 | }
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| 299 | }
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| 300 |
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| 301 |
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| 302 | sub read_old {
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| 303 | my $self = shift (@_);
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| 304 |
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| 305 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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| 306 |
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[9958] | 307 | my $outhandle = $self->{'outhandle'};
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[4726] | 308 |
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[9958] | 309 | my $filename = $file;
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| 310 | $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
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[4726] | 311 |
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[17197] | 312 | # block the srcdocs dir - we will process files in them when we find an OAI record for them
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[9958] | 313 | return 0 if ((-d $filename) && ($filename =~ m/srcdocs$/));
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| 314 | if ($self->SUPER::read(@_)) {
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| 315 | # Do encoding stuff
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| 316 | my ($language, $encoding) = $self->textcat_get_language_encoding ($filename);
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| 317 |
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[17197] | 318 | my $url_array = $metadata->{'dc.Identifier'};
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[10254] | 319 | my $num_urls = (defined $url_array) ? scalar(@$url_array) : 0;
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[9958] | 320 |
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| 321 | my $srcdoc_exists = 0;
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| 322 | my $srcdoc_pos = 0;
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| 323 | my $filename_dir = &util::filename_head($filename);
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| 324 |
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| 325 | for (my $i=0; $i<$num_urls; $i++) {
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| 326 | if ($url_array->[$i] !~ m/^(http|ftp):/) {
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| 327 |
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| 328 | my $src_filename = &util::filename_cat($filename_dir, $url_array->[$i]);
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| 329 | if (-e $src_filename) {
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| 330 | $srcdoc_pos = $i;
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| 331 | $srcdoc_exists = 1;
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| 332 | }
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| 333 | }
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| 334 | }
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| 335 |
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| 336 | if ($srcdoc_exists)
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| 337 | {
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[15872] | 338 | print $outhandle "OAIPlugin: passing metadata on to $url_array->[0]\n"
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[9958] | 339 | if ($self->{'verbosity'}>1);
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| 340 |
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| 341 |
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| 342 | # Make pretty print metadata table stick with src filename
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| 343 | my $ppmd_table = $self->{'ppmd_table'};
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| 344 | $metadata->{'prettymd'} = [ $ppmd_table ];
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| 345 | $self->{'ppmd_table'} = undef;
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| 346 |
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| 347 | return &plugin::read ($pluginfo, $filename_dir, $url_array->[0],
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[16392] | 348 | $block_hash, $metadata, $processor, $maxdocs,
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| 349 | $total_count, $gli);
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[9958] | 350 | }
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| 351 | else
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| 352 | {
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| 353 | # create a new document
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| 354 | my $doc_obj = new doc ($filename, "indexed_doc");
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| 355 | my $top_section = $doc_obj->get_top_section;
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| 356 | my $plugin_type = $self->{'plugin_type'};
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| 357 |
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| 358 | $doc_obj->add_utf8_metadata($top_section, "Language", $language);
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| 359 | $doc_obj->add_utf8_metadata($top_section, "Encoding", $encoding);
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| 360 | $doc_obj->add_utf8_metadata($top_section, "Plugin", $plugin_type);
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| 361 | $doc_obj->add_metadata($top_section, "FileFormat", "OAI");
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| 362 | $doc_obj->add_metadata($top_section, "FileSize", (-s $filename));
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| 363 |
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| 364 | # include any metadata passed in from previous plugins
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| 365 | # note that this metadata is associated with the top level section
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| 366 | $self->extra_metadata ($doc_obj, $doc_obj->get_top_section(), $metadata);
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| 367 |
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| 368 | # do plugin specific processing of doc_obj
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| 369 | my $textref = \$self->{'rawxml'};
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| 370 | unless (defined ($self->process($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj))) {
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| 371 | print STDERR "<ProcessingError n='$file'>\n" if ($gli);
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| 372 | return -1;
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| 373 | }
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| 374 |
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| 375 | # do any automatic metadata extraction
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| 376 | $self->auto_extract_metadata ($doc_obj);
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| 377 |
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| 378 | # add an OID
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[17026] | 379 | $self->add_OID($doc_obj);
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[9958] | 380 |
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| 381 | my $ppmd_table = $self->{'ppmd_table'};
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| 382 | $doc_obj->add_utf8_metadata($top_section,"prettymd",$ppmd_table);
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| 383 | $self->{'ppmd_table'} = undef;
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| 384 |
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| 385 | # process the document
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| 386 | $processor->process($doc_obj);
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| 387 |
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| 388 | $self->{'num_processed'} ++;
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| 389 |
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| 390 | return 1; # processed the file
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| 391 | }
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[4726] | 392 | }
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[9958] | 393 | else {
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| 394 | return undef;
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| 395 | }
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[4726] | 396 | }
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| 397 |
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| 398 |
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| 399 | # do plugin specific processing of doc_obj
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| 400 | sub process {
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| 401 | my $self = shift (@_);
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[6332] | 402 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
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[4726] | 403 | my $outhandle = $self->{'outhandle'};
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| 404 |
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[15872] | 405 | print STDERR "<Processing n='$file' p='OAIPlugin'>\n" if ($gli);
|
---|
| 406 | print $outhandle "OAIPlugin: processing $file\n"
|
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[4726] | 407 | if $self->{'verbosity'} > 1;
|
---|
| 408 |
|
---|
| 409 | my $cursection = $doc_obj->get_top_section();
|
---|
| 410 |
|
---|
| 411 | ## $self->extract_metadata ($textref, $metadata, $doc_obj, $cursection);
|
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| 412 |
|
---|
| 413 | # add text to document object
|
---|
| 414 |
|
---|
| 415 | # $$textref =~ s/<(.*?)>/$1 /g;
|
---|
| 416 | $$textref =~ s/</</g;
|
---|
| 417 | $$textref =~ s/>/>/g;
|
---|
[14963] | 418 | $$textref =~ s/\[/[/g;
|
---|
| 419 | $$textref =~ s/\]/]/g;
|
---|
[4726] | 420 |
|
---|
| 421 | ## print STDERR "*** adding text: $$textref\n";
|
---|
| 422 |
|
---|
| 423 | $doc_obj->add_utf8_text($cursection, $$textref);
|
---|
| 424 |
|
---|
| 425 | return 1;
|
---|
| 426 | }
|
---|
| 427 |
|
---|
| 428 |
|
---|
[9958] | 429 | # Improvement is to merge this with newer version in MetadataPass
|
---|
[4726] | 430 |
|
---|
[9958] | 431 | sub open_prettyprint_metadata_table
|
---|
| 432 | {
|
---|
| 433 | my $self = shift(@_);
|
---|
| 434 |
|
---|
| 435 | my $att = "width=100% cellspacing=2";
|
---|
| 436 | my $style = "style=\'border-bottom: 4px solid #000080\'";
|
---|
| 437 |
|
---|
| 438 | $self->{'ppmd_table'} = "\n<table $att $style>";
|
---|
| 439 | }
|
---|
| 440 |
|
---|
| 441 | sub add_prettyprint_metadata_line
|
---|
| 442 | {
|
---|
| 443 | my $self = shift(@_);
|
---|
| 444 | my ($metaname, $metavalue_utf8) = @_;
|
---|
| 445 |
|
---|
[14949] | 446 | ### $metavalue_utf8 =~ s/hdl\.handle\.net/mcgonagall.cs.waikato.ac.nz:8080\/dspace\/handle/;
|
---|
[9958] | 447 | $metavalue_utf8 = &util::hyperlink_text($metavalue_utf8);
|
---|
| 448 |
|
---|
| 449 | $self->{'ppmd_table'} .= " <tr bgcolor=#b5d3cd>\n";
|
---|
| 450 | $self->{'ppmd_table'} .= " <td width=30%>\n";
|
---|
| 451 | $self->{'ppmd_table'} .= " $metaname\n";
|
---|
| 452 | $self->{'ppmd_table'} .= " </td>\n";
|
---|
| 453 | $self->{'ppmd_table'} .= " <td>\n";
|
---|
| 454 | $self->{'ppmd_table'} .= " $metavalue_utf8\n";
|
---|
| 455 | $self->{'ppmd_table'} .= " </td>\n";
|
---|
| 456 | $self->{'ppmd_table'} .= " </tr>\n";
|
---|
| 457 |
|
---|
| 458 | }
|
---|
| 459 |
|
---|
| 460 | sub close_prettyprint_metadata_table
|
---|
| 461 | {
|
---|
| 462 | my $self = shift(@_);
|
---|
| 463 |
|
---|
| 464 | $self->{'ppmd_table'} .= "</table>\n";
|
---|
| 465 | }
|
---|
| 466 |
|
---|
| 467 |
|
---|
[14940] | 468 | sub remap_dcterms_metadata
|
---|
| 469 | {
|
---|
| 470 | my $self = shift(@_);
|
---|
[9958] | 471 |
|
---|
[14940] | 472 | my ($metaname) = @_;
|
---|
[9958] | 473 |
|
---|
[14940] | 474 | my $dcterm_mapping = {
|
---|
| 475 | "alternative" => "dc.title",
|
---|
| 476 | "tableOfContents" => "dc.description",
|
---|
| 477 | "abstract" => "dc.description",
|
---|
| 478 | "created" => "dc.date",
|
---|
| 479 | "valid" => "dc.date",
|
---|
| 480 | "available" => "dc.date",
|
---|
| 481 | "issued" => "dc.date",
|
---|
| 482 | "modified" => "dc.date",
|
---|
| 483 | "dateAccepted" => "dc.date",
|
---|
| 484 | "dateCopyrighted" => "dc.date",
|
---|
| 485 | "dateSubmitted" => "dc.date",
|
---|
| 486 | "extent" => "dc.format",
|
---|
| 487 | "medium" => "dc.format",
|
---|
| 488 | "isVersionOf" => "dc.relation",
|
---|
| 489 | "hasVersion" => "dc.relation",
|
---|
| 490 | "isReplacedBy" => "dc.relation",
|
---|
| 491 | "replaces" => "dc.relation",
|
---|
| 492 | "isRequiredBy" => "dc.relation",
|
---|
| 493 | "requires" => "dc.relation",
|
---|
| 494 | "isPartOf" => "dc.relation",
|
---|
| 495 | "hasPart" => "dc.relation",
|
---|
| 496 | "isReferencedBy" => "dc.relation",
|
---|
| 497 | "references" => "dc.relation",
|
---|
| 498 | "isFormatOf" => "dc.relation",
|
---|
| 499 | "hasFormat" => "dc.relation",
|
---|
| 500 | "conformsTo" => "dc.relation",
|
---|
| 501 | "spatial" => "dc.coverage",
|
---|
| 502 | "temporal" => "dc.coverage",
|
---|
| 503 | "audience" => "dc.any",
|
---|
| 504 | "accrualMethod" => "dc.any",
|
---|
| 505 | "accrualPeriodicity" => "dc.any",
|
---|
| 506 | "accrualPolicy" => "dc.any",
|
---|
| 507 | "instructionalMethod" => "dc.any",
|
---|
| 508 | "provenance" => "dc.any",
|
---|
| 509 | "rightsHolder" => "dc.any",
|
---|
| 510 | "mediator" => "audience",
|
---|
| 511 | "educationLevel" => "audience",
|
---|
| 512 | "accessRights" => "dc.rights",
|
---|
| 513 | "license" => "dc.rights",
|
---|
| 514 | "bibliographicCitation" => "dc.identifier"
|
---|
| 515 | };
|
---|
| 516 |
|
---|
| 517 | my ($prefix,$name) = ($metaname =~ m/^(.*?)\.(.*?)$/);
|
---|
| 518 |
|
---|
| 519 | if ($prefix eq "dcterms")
|
---|
| 520 | {
|
---|
| 521 | if (defined $dcterm_mapping->{$name})
|
---|
| 522 | {
|
---|
| 523 | return $dcterm_mapping->{$name}."^".$name;
|
---|
| 524 | }
|
---|
| 525 |
|
---|
| 526 | }
|
---|
| 527 | return $metaname; # didn't get a match, return param passed in unchanged
|
---|
| 528 | }
|
---|
| 529 |
|
---|
| 530 |
|
---|
[4726] | 531 | sub extract_oai_metadata {
|
---|
| 532 | my $self = shift (@_);
|
---|
| 533 | my ($textref, $metadata) = @_;
|
---|
| 534 | my $outhandle = $self->{'outhandle'};
|
---|
| 535 |
|
---|
[9958] | 536 | # Only handles DC metadata
|
---|
| 537 |
|
---|
| 538 | $self->open_prettyprint_metadata_table();
|
---|
| 539 |
|
---|
| 540 | if ($$textref =~ m/<metadata\s*>(.*?)<\/metadata\s*>/s)
|
---|
[4726] | 541 | {
|
---|
[10254] | 542 | my $metadata_text = $1;
|
---|
[4726] | 543 |
|
---|
[14940] | 544 | # locate and remove outermost tag (ignoring any attribute information in top-level tag)
|
---|
| 545 | my ($wrapper_metadata_xml,$inner_metadata_text) = ($metadata_text =~ m/<([^ >]+).*?>(.*?)<\/\1>/s);
|
---|
| 546 |
|
---|
| 547 | # split tag into namespace and tag name
|
---|
| 548 | my($namespace,$top_level_prefix) = ($wrapper_metadata_xml =~ m/^(.*?):(.*?)$/);
|
---|
| 549 |
|
---|
[17066] | 550 | # sometimes, the dc namespace is not specified as the prefix in each element (like <dc:title>)
|
---|
| 551 | # but is rather defined in the wrapper element containing the various dc meta elements,
|
---|
| 552 | # like <dc><title></title><creator></creator></dc>.
|
---|
| 553 | # In such a case, we use this wrapper element as the top_level_prefix
|
---|
| 554 | if(!defined $top_level_prefix && defined $wrapper_metadata_xml && $wrapper_metadata_xml =~ m/dc$/) {
|
---|
| 555 | $top_level_prefix = $wrapper_metadata_xml;
|
---|
| 556 | }
|
---|
| 557 |
|
---|
| 558 | if ($top_level_prefix !~ m/dc$/) {
|
---|
[15872] | 559 | print $outhandle "Warning: OAIPlugin currently only designed for Dublin Core (or variant) metadata\n";
|
---|
[14940] | 560 | print $outhandle " This recorded metadata section '$top_level_prefix' does not appear to match.\n";
|
---|
| 561 | print $outhandle " Metadata assumed to be in form: <prefix:tag>value</prefix:tag> and will be converted\n";
|
---|
| 562 | print $outhandle " into Greenstone metadata as prefix.tag = value\n";
|
---|
| 563 | }
|
---|
| 564 |
|
---|
[14949] | 565 | while ($inner_metadata_text =~ m/<([^ >]+).*?>(.*?)<\/\1>(.*)/s)
|
---|
[4726] | 566 | {
|
---|
| 567 | # if URL given for document as identifier metadata, store it ...
|
---|
| 568 | # $doc_obj->add_utf8_metadata($cursection, "URL", $web_url);
|
---|
[9958] | 569 |
|
---|
[4726] | 570 | my $metaname = $1;
|
---|
| 571 | my $metavalue = $2;
|
---|
[14949] | 572 | $inner_metadata_text = $3;
|
---|
| 573 |
|
---|
| 574 | # print STDERR "*** metaname = $metaname\n";
|
---|
| 575 | # print STDERR "*** metavalue = $metavalue\n";
|
---|
| 576 |
|
---|
[14940] | 577 | # $metaname =~ s/^(dc:)?(.)/\u$2/; # strip of optional prefix and uppercase first letter
|
---|
| 578 | $metaname =~ s/:/\./;
|
---|
| 579 | if ($metaname !~ m/\./)
|
---|
[4726] | 580 | {
|
---|
[14940] | 581 | $metaname = "$top_level_prefix.$metaname";
|
---|
[17066] | 582 | # print STDERR "*** metaname = $metaname\tmetavalue = $metavalue\n";
|
---|
[4726] | 583 | }
|
---|
[14963] | 584 | $metaname =~ s/\.(.)/\.\u$1/;
|
---|
[4726] | 585 |
|
---|
[14940] | 586 | $metaname = $self->remap_dcterms_metadata($metaname);
|
---|
| 587 |
|
---|
[14963] | 588 | $metavalue =~ s/\[/[/g;
|
---|
| 589 | $metavalue =~ s/\]/]/g;
|
---|
| 590 |
|
---|
| 591 |
|
---|
[14940] | 592 | # if ($metaname eq "Identifier")
|
---|
| 593 | # {
|
---|
| 594 | # # name clashes with GSDL reserved metadata name for hash id
|
---|
| 595 | # $metaname = "URL";
|
---|
| 596 | # }
|
---|
| 597 |
|
---|
[4726] | 598 | if (defined $metadata->{$metaname})
|
---|
| 599 | {
|
---|
| 600 | push(@{$metadata->{$metaname}},$metavalue);
|
---|
[8121] | 601 |
|
---|
[4726] | 602 | }
|
---|
| 603 | else
|
---|
| 604 | {
|
---|
| 605 | $metadata->{$metaname} = [ $metavalue ];
|
---|
| 606 | }
|
---|
| 607 |
|
---|
[9958] | 608 | $self->add_prettyprint_metadata_line($metaname, $metavalue);
|
---|
| 609 |
|
---|
[4726] | 610 | }
|
---|
| 611 | }
|
---|
[9958] | 612 |
|
---|
| 613 | $self->close_prettyprint_metadata_table();
|
---|
[4726] | 614 | }
|
---|
| 615 |
|
---|
[13886] | 616 | ## we know from the file extension, so doesn't need to check the doctype
|
---|
| 617 | sub check_doctype {
|
---|
| 618 |
|
---|
| 619 | return 1;
|
---|
| 620 | }
|
---|
| 621 |
|
---|
[4726] | 622 | 1;
|
---|