[10549] | 1 |
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[8511] | 2 | ###########################################################################
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| 3 | #
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[15872] | 4 | # DSpacePlugin.pm -- plugin for importing a collection from DSpace
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[8511] | 5 | #
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| 6 | # A component of the Greenstone digital library software
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| 7 | # from the New Zealand Digital Library Project at the
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| 8 | # University of Waikato, New Zealand.
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| 9 | #
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[15872] | 10 | # Copyright (C) 2004 New Zealand Digital Library Project
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[8511] | 11 | #
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| 12 | # This program is free software; you can redistribute it and/or modify
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| 13 | # it under the terms of the GNU General Public License as published by
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| 14 | # the Free Software Foundation; either version 2 of the License, or
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| 15 | # (at your option) any later version.
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| 16 | #
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| 17 | # This program is distributed in the hope that it will be useful,
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| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | # GNU General Public License for more details.
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| 21 | #
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| 22 | # You should have received a copy of the GNU General Public License
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| 23 | # along with this program; if not, write to the Free Software
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| 24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 25 | #
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| 26 | ###########################################################################
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| 27 |
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[15872] | 28 |
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[8511] | 29 | # This plugin takes "contents" and dublin_core.xml file, which contain
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| 30 | # Metadata and lists of associated files for a particular document
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| 31 | # and produces a document containing sections, one for each page.
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| 32 | # The files should be named "contents" and "dublin_core.xml". For each of
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| 33 | # document in DSpace, it is stored in one directory
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| 34 | #
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| 35 | # The format of the "contents" file is as follows:
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| 36 | #
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| 37 | # File.type bundle:ORIGINAL
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| 38 | # license.txt bundle:LICENSE
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| 39 | # The format of the "dublin_core.xml" file is as follows:
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| 40 | # The first line contains any metadata for the whole document
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| 41 | # <dublin_core>
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| 42 | # eg.
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| 43 | # <dcvalue element="Title" qualifier="">Snail farming</dcvalue>
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| 44 | # <dcvalue element="date" qualifier="">2004-10-15</dcvalue>
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| 45 | #
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| 46 |
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[15872] | 47 | package DSpacePlugin;
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[8511] | 48 |
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[19746] | 49 | use ReadTextFile;
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[8511] | 50 | use plugin;
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| 51 | use XMLParser;
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[10254] | 52 | use strict;
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| 53 | no strict 'refs'; # allow filehandles to be variables and viceversa
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[8511] | 54 |
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| 55 | sub BEGIN {
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[19746] | 56 | @DSpacePlugin::ISA = ('ReadTextFile');
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[8511] | 57 | }
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| 58 |
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| 59 | my $arguments =
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| 60 | [ { 'name' => "process_exp",
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[15872] | 61 | 'desc' => "{BasePlugin.process_exp}",
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[8511] | 62 | 'type' => "string",
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| 63 | 'deft' => &get_default_process_exp(),
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| 64 | 'reqd' => "no" },
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| 65 | { 'name' => "only_first_doc",
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[15872] | 66 | 'desc' => "{DSpacePlugin.only_first_doc}",
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[8511] | 67 | 'type' => "flag",
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| 68 | 'reqd' => "no" },
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[9168] | 69 | { 'name' => "first_inorder_ext",
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[15872] | 70 | 'desc' => "{DSpacePlugin.first_inorder_ext}",
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[8891] | 71 | 'type' => "string",
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[8511] | 72 | 'reqd' => "no" },
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| 73 | { 'name' => "first_inorder_mime",
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[15872] | 74 | 'desc' => "{DSpacePlugin.first_inorder_mime}",
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[8511] | 75 | 'type' => "flag",
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| 76 | 'reqd' => "no" },
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| 77 | { 'name' => "block_exp",
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[15872] | 78 | 'desc' => "{BasePlugin.block_exp}",
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[8891] | 79 | 'type' => "regexp",
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[8511] | 80 | 'deft' => &get_default_block_exp(),
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| 81 | 'reqd' => "no" }];
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| 82 |
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| 83 |
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[15872] | 84 | my $options = { 'name' => "DSpacePlugin",
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| 85 | 'desc' => "{DSpacePlugin.desc}",
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[8511] | 86 | 'inherits' => "yes",
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[11676] | 87 | 'abstract' => "no",
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[8511] | 88 | 'args' => $arguments };
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| 89 |
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| 90 |
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| 91 | my $primary_doc_lookup = { 'text/html' => '(?i)\.(gif|jpe?g|jpe|jpg|png|css)$' };
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| 92 |
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[8913] | 93 | # Important variation to regular plugin structure. Need to declare
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| 94 | # $self as global variable to file so XMLParser callback routines
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| 95 | # can access the content of the object.
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| 96 | my ($self);
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| 97 |
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[8511] | 98 | sub new {
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[10218] | 99 | my ($class) = shift (@_);
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| 100 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 101 | push(@$pluginlist, $class);
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[8511] | 102 |
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[15872] | 103 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 104 | push(@{$hashArgOptLists->{"OptList"}},$options);
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[8511] | 105 |
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[19746] | 106 | $self = new ReadTextFile($pluginlist, $inputargs, $hashArgOptLists);
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[8511] | 107 |
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[15872] | 108 | if ($self->{'info_only'}) {
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| 109 | # don't worry about creating the XML parser as all we want is the
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| 110 | # list of plugin options
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| 111 | return bless $self, $class;
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| 112 | }
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| 113 |
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[8511] | 114 | #create XML::Parser object for parsing dublin_core.xml files
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| 115 | my $parser = new XML::Parser('Style' => 'Stream',
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| 116 | 'Handlers' => {'Char' => \&Char,
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| 117 | 'Doctype' => \&Doctype
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| 118 | });
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| 119 | $self->{'parser'} = $parser;
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| 120 | $self->{'extra_blocks'} = {};
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| 121 |
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| 122 | return bless $self, $class;
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| 123 | }
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| 124 |
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| 125 | sub get_default_process_exp {
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| 126 | my $self = shift (@_);
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| 127 |
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[19746] | 128 | return q^(?i)(contents)$^;
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[8511] | 129 | }
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| 130 |
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| 131 | # want to block all files except the "contents"
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| 132 | sub get_default_block_exp {
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| 133 | my $self = shift (@_);
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| 134 |
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[19746] | 135 | # Block handle and txt files if present. Specifically don't block dublin_core xml
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| 136 | return q^(?i)(handle|\.tx?t)$^;
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[8511] | 137 | }
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| 138 |
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[19746] | 139 | sub store_block_files_BACKUP
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| 140 | {
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| 141 | # Option of making blocking sensitive to files that are in directory
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| 142 | # This subroutine is not currently used! (relies on default block expression stopping all handle and .txt files)
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| 143 |
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| 144 | my $self =shift (@_);
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| 145 | my ($filename_full_path, $block_hash) = @_;
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| 146 |
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| 147 | my ($tailname, $contents_basedir, $suffix) = &File::Basename::fileparse($filename_full_path, "\\.[^\\.]+\$");
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| 148 | my $handle_filename = &util::filename_cat($contents_basedir,"handle");
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| 149 |
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[23419] | 150 | if (&util::fd_exists($handle_filename)) {
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[23561] | 151 | &util::block_filename($block_hash,$handle_filename);
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[23419] | 152 | }
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[19746] | 153 | }
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| 154 |
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[8511] | 155 | sub read_content
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| 156 | {
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| 157 | my $self = shift (@_);
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| 158 | my ($dir, $only_first_doc, $first_inorder_ext, $first_inorder_mime, $mimetype_list) = @_;
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| 159 | my $outhandle = $self->{'outhandle'};
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| 160 |
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| 161 | my @fnamemime_list = ();
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| 162 | my @assocmime_list = ();
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| 163 |
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| 164 | my $content_fname = &util::filename_cat($dir,"contents");
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| 165 |
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| 166 | open(CIN,"<$content_fname")
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| 167 | || die "Unable to open $content_fname: $!\n";
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| 168 |
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| 169 | my $line;
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| 170 | my $pos = 0;
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| 171 |
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| 172 | while (defined ($line = <CIN>)) {
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| 173 | if ($line =~ m/^(.*)\s+bundle:ORIGINAL\s*$/) {
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| 174 | my $fname = $1;
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| 175 | my $mtype = $mimetype_list->[$pos];
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| 176 | my $fm_rec = { 'file' => $fname, 'mimetype' => $mtype};
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| 177 | push(@fnamemime_list,$fm_rec);
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| 178 | $pos++;
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| 179 | }
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| 180 | }
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| 181 | close CIN;
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| 182 |
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| 183 | if ($only_first_doc){
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| 184 | my ($first_fname, @rest_fnames) = @fnamemime_list;
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| 185 | @fnamemime_list = ($first_fname);
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| 186 | @assocmime_list = @rest_fnames;
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| 187 | }
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| 188 |
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| 189 | # allow user to specify the types of files (inorder)they would like to assign as
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| 190 | # a primary bitstream
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| 191 | if ($first_inorder_ext) {
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| 192 | # parse user-define file extension names
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| 193 | my @extfiles_list = split /,/, $first_inorder_ext;
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| 194 | my (@rest_fnames) = @fnamemime_list;
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| 195 | my @matched_list = ();
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| 196 | foreach my $file_ext (@extfiles_list) {
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| 197 | $pos = 0;
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| 198 | foreach my $allfiles (@fnamemime_list){
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| 199 | $allfiles->{'file'} =~ /^(.*)\.(.*?)$/;
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| 200 | my $allfiles_ext = $2;
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| 201 |
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| 202 | if ($allfiles_ext =~ /$file_ext/) {
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| 203 | print $outhandle "Existing file:$allfiles->{'file'} match the user-define File Extension:$file_ext\n";
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| 204 | push (@matched_list, $allfiles);
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| 205 |
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| 206 | # delete the matched extension file from the array
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| 207 | splice(@rest_fnames,$pos,1);
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| 208 |
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| 209 | return (\@matched_list, \@rest_fnames);
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| 210 |
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| 211 | }
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| 212 | $pos++;
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| 213 | }
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| 214 | }
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| 215 | }
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| 216 |
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| 217 | if ($first_inorder_mime) {
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| 218 | # parse user-define file mimetype
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| 219 | my @file_mime_list = split /,/, $first_inorder_mime;
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| 220 | my (@rest_fnames) = @fnamemime_list;
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| 221 | my @matched_list = ();
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| 222 | foreach my $file_mime (@file_mime_list) {
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| 223 | $pos = 0;
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| 224 | foreach my $allfiles (@fnamemime_list){
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| 225 | my $allfiles_mime = $allfiles->{'mimetype'};
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| 226 |
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| 227 | if ($allfiles_mime =~ /$file_mime/) {
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| 228 | print $outhandle "Existing file:$allfiles->{'file'} match the user-defined File MimeType:$file_mime\n";
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| 229 | push (@matched_list, $allfiles);
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| 230 |
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| 231 | # delete the matched MIMEType file from the array
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| 232 | splice(@rest_fnames,$pos,1);
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| 233 | return (\@matched_list, \@rest_fnames);
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| 234 | }
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| 235 | $pos++;
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| 236 | }
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| 237 | }
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| 238 | }
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| 239 | return (\@fnamemime_list, \@assocmime_list);
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| 240 | }
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| 241 |
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| 242 |
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| 243 | sub filemime_list_to_re
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| 244 | {
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| 245 | my $self = shift (@_);
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| 246 | my ($fnamemime_list) = @_;
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| 247 |
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| 248 | my @fname_list = map { "(".$_->{'file'}.")" } @$fnamemime_list;
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| 249 | my $fname_re = join("|",@fname_list);
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| 250 | $fname_re =~ s/\./\\\./g;
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| 251 |
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| 252 | return $fname_re;
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| 253 | }
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| 254 |
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| 255 | # Read dublin_core metadata from DSpace collection
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| 256 | sub metadata_read {
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| 257 | my $self = shift (@_);
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[19493] | 258 | my ($pluginfo, $base_dir, $file, $block_hash,
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| 259 | $extrametakeys, $extrametadata, $extrametafile,
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[23212] | 260 | $processor, $gli, $aux) = @_;
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[8511] | 261 |
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| 262 | my $only_first_doc = $self->{'only_first_doc'};
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| 263 | my $first_inorder_ext = $self->{'first_inorder_ext'};
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| 264 | my $first_inorder_mime = $self->{'first_inorder_mime'};
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| 265 |
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| 266 | my $outhandle = $self->{'outhandle'};
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| 267 |
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| 268 | my $filename = &util::filename_cat($base_dir, $file);
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| 269 | # return 0 if $self->{'block_exp'} ne "" && $filename =~ /$self->{'block_exp'}/;
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| 270 |
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| 271 | if ($filename !~ /dublin_core\.xml$/ || !-f $filename) {
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| 272 | return undef;
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| 273 | }
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| 274 |
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[15872] | 275 | print $outhandle "DSpacePlugin: extracting metadata from $file\n"
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[8511] | 276 | if $self->{'verbosity'} > 1;
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| 277 |
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| 278 | my ($dir) = $filename =~ /^(.*?)[^\/\\]*$/;
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| 279 |
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| 280 | eval {
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| 281 | $self->{'parser'}->parsefile($filename);
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| 282 | };
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| 283 |
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| 284 | if ($@) {
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[15872] | 285 | die "DSpacePlugin: ERROR $filename is not a well formed dublin_core.xml file ($@)\n";
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[8511] | 286 | }
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| 287 |
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[24306] | 288 | my $mimetype_list = $self->{'saved_metadata'}->{'ex.dc.Format^mimetype'};
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[8511] | 289 | my ($doc_file_mimes, $assoc_file_mimes) = $self->read_content($dir, $only_first_doc, $first_inorder_ext,
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| 290 | $first_inorder_mime, $mimetype_list);
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[8913] | 291 |
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[8511] | 292 | my $file_re = $self->filemime_list_to_re($doc_file_mimes);
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| 293 |
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| 294 | if ($only_first_doc || $first_inorder_ext || $first_inorder_mime) {
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| 295 | foreach my $afm ( @$assoc_file_mimes ) {
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| 296 | my $full_af = &util::filename_cat($dir,$afm->{'file'});
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| 297 | $self->{'extra_blocks'}->{$full_af} = 1;
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| 298 | }
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| 299 | }
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| 300 | push(@$extrametakeys,$file_re);
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| 301 |
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[24306] | 302 | if (defined $self->{'saved_metadata'}->{'ex.dc.Format^extent'}) {
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| 303 | delete $self->{'saved_metadata'}->{'ex.dc.Format^extent'};
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[8511] | 304 | }
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| 305 |
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| 306 | if (defined $mimetype_list) {
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[24306] | 307 | delete $self->{'saved_metadata'}->{'ex.dc.Format^mimetype'};
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[8511] | 308 |
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| 309 | # Temporarily store associate file info in metadata table
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[15872] | 310 | # This will be removed in 'extra_metadata' in BasePlugin and used
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[8511] | 311 | # to perform the actual file association (once the doc obj has
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| 312 | # been formed
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| 313 |
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| 314 | my $main_doc = $doc_file_mimes->[0];
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| 315 | my $md_mimetype = $main_doc->{'mimetype'};
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| 316 |
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| 317 | my $pd_lookup = $primary_doc_lookup->{$md_mimetype};
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| 318 |
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| 319 | if (defined $pd_lookup) {
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| 320 | my $filter_re = $pd_lookup;
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| 321 | @$assoc_file_mimes = grep { $_->{'file'} !~ m/$filter_re/ } @$assoc_file_mimes;
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| 322 | }
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| 323 |
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| 324 | my @gsdlassocfile_tobe
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[24219] | 325 | = map { &util::filename_cat($dir,$_->{'file'}) .":".$_->{'mimetype'}.":" } @$assoc_file_mimes if @$assoc_file_mimes;
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[8511] | 326 | $self->{'saved_metadata'}->{'gsdlassocfile_tobe'} = \@gsdlassocfile_tobe;
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| 327 |
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| 328 | }
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[8913] | 329 |
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[8511] | 330 | $extrametadata->{$file_re} = $self->{'saved_metadata'};
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| 331 |
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| 332 | return 1;
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| 333 | }
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| 334 |
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| 335 |
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[15872] | 336 | # The DSpacePlugin read() function. We are not actually reading any documents
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| 337 | # here, just blocking ones that have been processed by metadata read.
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[8511] | 338 | #
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[15872] | 339 | # Returns 0 for a file its blocking, undef for any other
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[8511] | 340 | sub read {
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| 341 | my $self = shift (@_);
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[16392] | 342 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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[8511] | 343 | my $outhandle = $self->{'outhandle'};
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| 344 |
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| 345 | # Block all files except contents
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| 346 | my $filename = &util::filename_cat($base_dir, $file);
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| 347 | return 0 if $self->{'block_exp'} ne "" && $filename =~ /$self->{'block_exp'}/;
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| 348 |
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| 349 | my $assocfile = $metadata->{'assocfile'};
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| 350 |
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| 351 | return 0 if (($filename =~ /dublin_core\.xml$/) || ($filename =~ /contents$/));
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| 352 | return 0 if (defined $self->{'extra_blocks'}->{$filename});
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| 353 | return undef;
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| 354 | }
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| 355 |
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| 356 | sub Doctype {
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| 357 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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| 358 |
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| 359 | die if ($name !~ /^dublin_core$/);
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| 360 | }
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| 361 |
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| 362 | sub StartTag {
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| 363 | my ($expat, $element) = @_;
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| 364 | if ($element eq "dublin_core") {
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| 365 | $self->{'saved_metadata'} = {};
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[8913] | 366 | } elsif ($element eq "dcvalue") {
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[8511] | 367 | my $metaname = $_{'element'};
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[10549] | 368 | my $qualifier = $_{'qualifier'}||"";
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[21367] | 369 | if ($metaname ne "description" || $qualifier ne "provenance") {
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[9694] | 370 | $metaname .= "^$qualifier" if ($qualifier ne "none" && $qualifier ne "");
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[24306] | 371 | $self->{'metaname'} = "ex.dc.\u$metaname";
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[8511] | 372 | }
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| 373 | }
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| 374 | }
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| 375 |
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| 376 | sub EndTag {
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| 377 | my ($expat, $element) = @_;
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| 378 |
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| 379 | if ($element eq "dcvalue") {
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| 380 | $self->{'metaname'} = "";
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| 381 | }
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| 382 | }
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| 383 |
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| 384 | sub Text {
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| 385 | if (defined ($self->{'metaname'}) && $self->{'metaname'} ne "") {
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| 386 | # $_ == Metadata content
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| 387 | my $mname = $self->{'metaname'};
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[21367] | 388 | my $mvalue = prepareMetadataValue($_);
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[8511] | 389 | if (defined $self->{'saved_metadata'}->{$mname}) {
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| 390 | # accumulate - add value to existing value(s)
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| 391 | if (ref ($self->{'saved_metadata'}->{$mname}) eq "ARRAY") {
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[21367] | 392 | push (@{$self->{'saved_metadata'}->{$mname}}, $mvalue);
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[8511] | 393 | } else {
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| 394 | $self->{'saved_metadata'}->{$mname} =
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[21367] | 395 | [$self->{'saved_metadata'}->{$mname}, $mvalue];
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[8511] | 396 | }
|
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| 397 | } else {
|
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| 398 | # accumulate - add value into (currently empty) array
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[21367] | 399 | $self->{'saved_metadata'}->{$mname} = [$mvalue];
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[8511] | 400 | }
|
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| 401 |
|
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| 402 | }
|
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| 403 | }
|
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| 404 |
|
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[21367] | 405 | # Prepare DSpace metadata for using with Greenstone.
|
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| 406 | # Some value must be escaped.
|
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| 407 | sub prepareMetadataValue {
|
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| 408 | my ($value) = @_;
|
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| 409 |
|
---|
| 410 | $value =~ s/\[/[/g;
|
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| 411 | $value =~ s/\]/]/g;
|
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| 412 |
|
---|
| 413 | return $value;
|
---|
| 414 | }
|
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[8511] | 415 | # This Char function overrides the one in XML::Parser::Stream to overcome a
|
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| 416 | # problem where $expat->{Text} is treated as the return value, slowing
|
---|
| 417 | # things down significantly in some cases.
|
---|
| 418 | sub Char {
|
---|
[9462] | 419 | use bytes; # Necessary to prevent encoding issues with XML::Parser 2.31+
|
---|
| 420 | $_[0]->{'Text'} .= $_[1];
|
---|
| 421 | return undef;
|
---|
[8511] | 422 | }
|
---|
| 423 |
|
---|
| 424 | 1;
|
---|