| 1 | ###########################################################################
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| 2 | #
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| 3 | # MARCXMLPlugin.pm
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 2001 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 | # Processes MARCXML documents. Note that this plugin does no
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| 27 | # syntax checking (though the XML::Parser module tests for
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| 28 | # well-formedness).
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| 29 |
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| 30 | package MARCXMLPlugin;
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| 31 |
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| 32 | use ReadXMLFile;
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| 33 | use ReadTextFile;
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| 34 | use marcmapping;
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| 35 |
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| 36 | use strict;
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| 37 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 38 |
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| 39 | sub BEGIN {
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| 40 | @MARCXMLPlugin::ISA = ('ReadXMLFile', 'ReadTextFile');
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| 41 | }
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| 42 |
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| 43 | my $arguments = [{'name' => "metadata_mapping_file",
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| 44 | 'desc' => "{MARCXMLPlugin.metadata_mapping_file}",
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| 45 | 'type' => "string",
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| 46 | 'deft' => "marc2dc.txt",
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| 47 | 'reqd' => "no" },
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| 48 | { 'name' => "process_exp",
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| 49 | 'desc' => "{BasePlugin.process_exp}",
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| 50 | 'type' => "regexp",
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| 51 | 'deft' => &get_default_process_exp(),
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| 52 | 'reqd' => "no" }];
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| 53 |
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| 54 | my $options = { 'name' => "MARCXMLPlugin",
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| 55 | 'desc' => "{MARCXMLPlugin.desc}",
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| 56 | 'abstract' => "no",
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| 57 | 'inherits' => "yes",
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| 58 | 'args' => $arguments
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| 59 | };
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| 60 |
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| 61 |
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| 62 | sub new {
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| 63 | my ($class) = shift (@_);
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| 64 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 65 | push(@$pluginlist, $class);
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| 66 |
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| 67 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 68 | push(@{$hashArgOptLists->{"OptList"}},$options);
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| 69 |
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| 70 | # we want to be able to use the textcat methods from ReadTextFile
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| 71 | # to get the language and encoding
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| 72 | new ReadTextFile($pluginlist, $inputargs, $hashArgOptLists, 1);
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| 73 |
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| 74 | my $self = new ReadXMLFile($pluginlist, $inputargs, $hashArgOptLists);
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| 75 |
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| 76 | # we want to strip namespaces, so have to create a new XML parser
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| 77 | my $parser = new XML::Parser('Style' => 'Stream',
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| 78 | 'Pkg' => 'ReadXMLFile',
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| 79 | 'PluginObj' => $self,
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| 80 | 'Namespaces' => 1, # strip out namespaces
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| 81 | 'Handlers' => {'Char' => \&ReadXMLFile::Char,
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| 82 | 'XMLDecl' => \&ReadXMLFile::XMLDecl,
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| 83 | 'Entity' => \&ReadXMLFile::Entity,
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| 84 | 'Doctype' => \&ReadXMLFile::Doctype,
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| 85 | 'Default' => \&ReadXMLFile::Default
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| 86 | });
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| 87 |
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| 88 | $self->{'parser'} = $parser;
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| 89 |
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| 90 | $self->{'content'} = "";
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| 91 | $self->{'xmlcontent'} = "";
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| 92 | $self->{'record_count'} = 1;
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| 93 | $self->{'language'} = "";
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| 94 | $self->{'encoding'} = "";
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| 95 | $self->{'marc_mapping'} = {};
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| 96 | $self->{'current_code'} = "";
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| 97 | $self->{'current_tag'} = "";
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| 98 | $self->{'current_element'} = "";
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| 99 | $self->{'metadata_mapping'} = undef;
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| 100 | $self->{'num_processed'} = 0;
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| 101 | $self->{'indent'} = 0;
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| 102 |
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| 103 | return bless $self, $class;
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| 104 | }
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| 105 |
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| 106 |
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| 107 | sub get_default_process_exp {
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| 108 | my $self = shift (@_);
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| 109 |
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| 110 | return q^(?i)\.xml$^;
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| 111 | }
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| 112 |
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| 113 | sub get_doctype {
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| 114 | my $self = shift(@_);
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| 115 |
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| 116 | return "collection";
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| 117 | }
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| 118 |
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| 119 |
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| 120 | sub init {
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| 121 | my $self = shift (@_);
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| 122 | my ($verbosity, $outhandle, $failhandle) = @_;
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| 123 |
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| 124 | ## the mapping file has already been loaded
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| 125 | if (defined $self->{'metadata_mapping'} ){
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| 126 | $self->SUPER::init(@_);
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| 127 | return;
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| 128 | }
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| 129 |
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| 130 | # read in the metadata mapping file
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| 131 | my $mm_file = &util::locate_config_file($self->{'metadata_mapping_file'});
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| 132 |
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| 133 | if (! defined $mm_file)
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| 134 | {
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| 135 | my $msg = "MARCXMLPlugin ERROR: Can't locate mapping file \"" .
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| 136 | $self->{'metadata_mapping_file'} . "\".\n " .
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| 137 | " No metadata will be extracted from MARCXML files.\n";
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| 138 |
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| 139 | print $outhandle $msg;
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| 140 | print $failhandle $msg;
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| 141 | $self->{'metadata_mapping'} = undef;
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| 142 | # We pick up the error in process() if there is no $mm_file
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| 143 | # If we exit here, then pluginfo.pl will exit too!
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| 144 | }
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| 145 | else {
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| 146 | $self->{'metadata_mapping'} = &marcmapping::parse_marc_metadata_mapping($mm_file, $outhandle);
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| 147 | }
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| 148 |
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| 149 |
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| 150 | ##map { print STDERR $_."=>".$self->{'metadata_mapping'}->{$_}."\n"; } keys %{$self->{'metadata_mapping'}};
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| 151 |
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| 152 | $self->SUPER::init(@_);
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| 153 | }
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| 154 |
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| 155 | # Called for DOCTYPE declarations - use die to bail out if this doctype
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| 156 | # is not meant for this plugin
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| 157 | sub xml_doctype {
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| 158 | my $self = shift(@_);
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| 159 |
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| 160 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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| 161 | return;
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| 162 |
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| 163 | }
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| 164 |
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| 165 |
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| 166 | sub xml_start_document {
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| 167 | my $self = shift(@_);
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| 168 |
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| 169 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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| 170 |
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| 171 |
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| 172 | my $file = $self->{'file'};
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| 173 | my $filename = $self->{'filename'};
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| 174 |
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| 175 | my ($language, $encoding) = $self->textcat_get_language_encoding ($filename);
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| 176 |
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| 177 | $self->{'language'} = $language;
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| 178 | $self->{'encoding'} = $encoding;
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| 179 | $self->{'element_count'} = 1;
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| 180 | $self->{'indent'} = 0;
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| 181 | my $outhandle = $self->{'outhandle'};
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| 182 | print $outhandle "MARCXMLPlugin: processing $self->{'file'}\n" if $self->{'verbosity'} > 1;
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| 183 | print STDERR "<Processing n='$self->{'file'}' p='MARCXMLPlugin'>\n" if $self->{'gli'};
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| 184 |
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| 185 | # reset the base id
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| 186 | $self->{'base_oid'} = undef;
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| 187 |
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| 188 | }
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| 189 |
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| 190 | sub xml_end_document {
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| 191 |
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| 192 | }
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| 193 |
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| 194 | sub xml_start_tag {
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| 195 | my $self = shift;
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| 196 | my $expat = shift;
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| 197 | my $element = shift;
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| 198 |
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| 199 | my $text = $_;
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| 200 | my $escaped_text = $self->escape_text($_);
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| 201 |
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| 202 | $self->{'current_element'} = $element;
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| 203 |
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| 204 | ##get all atributes of this element and store it in a map name=>value
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| 205 | my %attr_map = ();
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| 206 | my $attrstring = $_;
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| 207 | while ($attrstring =~ /(\w+)=\"(\w+)\"/){
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| 208 | $attr_map{$1}=$2;
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| 209 | $attrstring = $'; #'
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| 210 | }
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| 211 |
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| 212 |
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| 213 | my $processor = $self->{'processor'};
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| 214 | my $metadata = $self->{'metadata'};
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| 215 |
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| 216 | ##create a new document for each record
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| 217 | if ($element eq "record") {
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| 218 | my $filename = $self->{'filename'};
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| 219 | my $language = $self->{'language'};
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| 220 | my $encoding = $self->{'encoding'};
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| 221 | my $file = $self->{'file'};
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| 222 | my $doc_obj = new doc($filename, undef, $self->{'file_rename_method'});
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| 223 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Language", $language);
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| 224 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Encoding", $encoding);
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| 225 |
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| 226 | my ($filemeta) = $file =~ /([^\\\/]+)$/;
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| 227 | my $plugin_filename_encoding = $self->{'filename_encoding'};
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| 228 | my $filename_encoding = $self->deduce_filename_encoding($file,$metadata,$plugin_filename_encoding);
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| 229 | $self->set_Source_metadata($doc_obj, $filename, $filename_encoding);
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| 230 |
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| 231 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "SourceSegment", "$self->{'record_count'}");
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| 232 | if ($self->{'cover_image'}) {
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| 233 | $self->associate_cover_image($doc_obj, $filename);
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| 234 | }
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| 235 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Plugin", "$self->{'plugin_type'}");
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| 236 | $doc_obj->add_metadata($doc_obj->get_top_section(), "FileFormat", "MARCXML");
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| 237 |
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| 238 | my $outhandle = $self->{'outhandle'};
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| 239 | print $outhandle "Record $self->{'record_count'}\n" if $self->{'verbosity'} > 1;
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| 240 |
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| 241 | $self->{'record_count'}++;
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| 242 | $self->{'doc_obj'} = $doc_obj;
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| 243 | $self->{'num_processed'}++;
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| 244 | if (!defined $self->{'base_oid'}) {
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| 245 | $self->SUPER::add_OID($doc_obj);
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| 246 | $self->{'base_oid'} = $doc_obj->get_OID();
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| 247 | }
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| 248 |
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| 249 |
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| 250 | }
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| 251 |
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| 252 | ## get the marc code, for example 520
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| 253 | if ($element eq "datafield") {
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| 254 | if (defined $attr_map{'tag'} and $attr_map{'tag'} ne ""){
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| 255 | $self->{'current_tag'} = $attr_map{tag};
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| 256 | }
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| 257 | }
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| 258 |
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| 259 |
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| 260 | ## append the subcode to the marc code for example 520a or 520b
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| 261 | if ($element eq "subfield"){
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| 262 | if (defined $attr_map{'code'} and $attr_map{'code'} ne "" and $self->{'current_tag'} ne ""){
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| 263 | $self->{'current_code'} = $attr_map{'code'};
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| 264 | }
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| 265 | }
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| 266 |
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| 267 | if ($element eq "record"){
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| 268 | $self->{'indent'} = 0;
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| 269 | $self->{'content'} = "";
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| 270 | $self->{'xmlcontent'} = "";
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| 271 | }
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| 272 | else {
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| 273 | if ($element ne "subfield"){
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| 274 | $self->{'indent'} = 1;
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| 275 | }
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| 276 | else{
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| 277 | $self->{'indent'} = 2;
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| 278 | }
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| 279 | }
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| 280 |
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| 281 |
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| 282 | if ($element eq "collection") {
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| 283 | # remember the full start tag for <collection ...>
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| 284 | # This is needed to wrap around each <record> when generating its associate MARCXML file
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| 285 |
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| 286 | $self->{'xmlcollectiontag'} = $text;
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| 287 | }
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| 288 | else {
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| 289 | $self->{'content'} .= "<br/>" if ($element ne "record");
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| 290 | $self->{'content'} .= $self->calculate_indent($self->{'indent'}).$escaped_text;
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| 291 | $self->{'xmlcontent'} .= $text;
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| 292 | }
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| 293 |
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| 294 | }
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| 295 |
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| 296 |
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| 297 |
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| 298 | sub xml_end_tag {
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| 299 | my $self = shift(@_);
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| 300 | my ($expat, $element) = @_;
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| 301 |
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| 302 | my $text = $_;
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| 303 | my $escaped_text = $self->escape_text($_);
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| 304 |
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| 305 | if ($element eq "record" and defined $self->{'doc_obj'}) {
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| 306 | # process the document
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| 307 | my $processor = $self->{'processor'};
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| 308 | my $doc_obj = $self->{'doc_obj'};
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| 309 | $self->{'content'} .= "<br/>".$escaped_text;
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| 310 | $self->{'xmlcontent'} .= $text;
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| 311 |
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| 312 |
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| 313 | my $top_section = $doc_obj->get_top_section();
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| 314 |
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| 315 | my $tmp_marcxml_filename = &util::get_tmp_filename("xml");
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| 316 | if (open (XMLOUT,">$tmp_marcxml_filename")) {
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| 317 |
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| 318 | print XMLOUT "<?xml-stylesheet type=\"text/xsl\" href=\"MARC21slim2English.xsl\"?>\n";
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| 319 | my $xml_content = $self->{'xmlcontent'};
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| 320 |
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| 321 | $xml_content = $self->{'xmlcollectiontag'}.$xml_content."</collection>";
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| 322 |
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| 323 | print XMLOUT $xml_content;
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| 324 |
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| 325 | close(XMLOUT);
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| 326 |
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| 327 | $doc_obj->associate_file($tmp_marcxml_filename,"marcxml.xml","text/xml", $top_section);
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| 328 |
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| 329 | # assicate xsl style file for presentation as HTML
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| 330 | my $xsl_filename = &util::filename_cat($ENV{'GSDLHOME'},"etc","MARC21slim2English.xsl");
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| 331 | $doc_obj->associate_file($xsl_filename,"MARC21slim2English.xsl","text/xml", $top_section);
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| 332 |
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| 333 | }
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| 334 | else {
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| 335 | my $outhandle = $self->{'outhandle'};
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| 336 | print $outhandle "Warning: Unable for write out associated MARCXML file $tmp_marcxml_filename\n";
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| 337 | }
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| 338 |
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| 339 | # include any metadata passed in from previous plugins
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| 340 | # note that this metadata is associated with the top level section
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| 341 |
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| 342 | $self->extra_metadata ($doc_obj,
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| 343 | $doc_obj->get_top_section(),
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| 344 | $self->{'metadata'});
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| 345 |
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| 346 |
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| 347 | $self->add_OID($doc_obj, $self->{'base_oid'}, $self->{'record_count'});
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| 348 |
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| 349 | $doc_obj->add_utf8_text($doc_obj->get_top_section(),$self->{'content'});
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| 350 | $processor->process($doc_obj);
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| 351 |
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| 352 | ##clean up
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| 353 | $self->{'content'} = "";
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| 354 | $self->{'xmlcontent'} = "";
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| 355 | $self->{'doc_obj'} = undef;
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| 356 | return;
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| 357 | }
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| 358 |
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| 359 | ## map the xmlmarc to gsdl metadata
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| 360 | if ($element eq "datafield" and defined $self->{'doc_obj'} and defined $self->{'marc_mapping'} and defined $self->{'metadata_mapping'}){
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| 361 | my $metadata_mapping = $self->{'metadata_mapping'};
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| 362 | my $marc_mapping = $self->{'marc_mapping'};
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| 363 | my $doc_obj = $self->{'doc_obj'};
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| 364 |
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| 365 | ##print STDERR "**** Marc Record\n";
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| 366 | ##map { print STDERR $_."=>".$marc_mapping->{$_}."\n"; } keys %$marc_mapping;
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| 367 | ##print STDERR "**** Metadata Mapping\n";
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| 368 | ##map { print STDERR $_."=>".$metadata_mapping->{$_}."\n"; } keys %$metadata_mapping;
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| 369 |
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| 370 |
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| 371 | foreach my $marc_field (keys %$metadata_mapping){
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| 372 |
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| 373 | ## test whether this field has subfield
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| 374 | my $subfield = undef;
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| 375 | if ($marc_field =~ /(\d\d\d)(?:\$|\^)?(\w)/){
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| 376 | $marc_field = $1;
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| 377 | $subfield = $2;
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| 378 | }
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| 379 |
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| 380 | my $matched_field = $marc_mapping->{$marc_field};
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| 381 |
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| 382 | if (defined $matched_field) {
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| 383 |
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| 384 | my $meta_name = undef;
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| 385 | my $meta_value = undef;
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| 386 |
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| 387 | if (defined $subfield){
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| 388 | $meta_name = $metadata_mapping->{$marc_field."\$".$subfield};
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| 389 |
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| 390 | $meta_value = $matched_field->{$subfield};
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| 391 |
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| 392 | if (!defined $meta_value) {
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| 393 | # record read in does not have the specified subfield
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| 394 | next;
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| 395 | }
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| 396 | }
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| 397 | else {
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| 398 | $meta_name = $metadata_mapping->{$marc_field};
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| 399 |
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| 400 | # no subfield => get all the values
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| 401 | my $first = 1;
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| 402 | foreach my $value (sort keys %{$matched_field}) {
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| 403 | if ($first) {
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| 404 | $meta_value = $matched_field->{$value};
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| 405 | $first = 0;
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| 406 | } else {
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| 407 | $meta_value .= " " . $matched_field->{$value};
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| 408 | }
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| 409 | }
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| 410 |
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| 411 | }
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| 412 |
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| 413 | ## escape [ and ]
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| 414 | $meta_value =~ s/\[/\\\[/g;
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| 415 | $meta_value =~ s/\]/\\\]/g;
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| 416 | ##print STDERR "$meta_name=$meta_value\n";
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| 417 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(),$meta_name, $meta_value);
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| 418 |
|
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| 419 | }
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| 420 |
|
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| 421 | }
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| 422 |
|
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| 423 | ##clean up
|
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| 424 | $self->{'marc_mapping'} = undef;
|
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| 425 | $self->{'current_tag'} = "";
|
|---|
| 426 | }
|
|---|
| 427 |
|
|---|
| 428 | if ($element eq "datafield"){
|
|---|
| 429 | $self->{'indent'} = 1;
|
|---|
| 430 | $self->{'content'} .= "<br/>".$self->calculate_indent($self->{'indent'}).$escaped_text;
|
|---|
| 431 | $self->{'xmlcontent'} .= $text;
|
|---|
| 432 | }
|
|---|
| 433 | else{
|
|---|
| 434 | $self->{'content'} .= $escaped_text;
|
|---|
| 435 | $self->{'xmlcontent'} .= $text;
|
|---|
| 436 | }
|
|---|
| 437 |
|
|---|
| 438 | }
|
|---|
| 439 |
|
|---|
| 440 | sub add_OID {
|
|---|
| 441 | my $self = shift (@_);
|
|---|
| 442 | my ($doc_obj, $id, $record_number) = @_;
|
|---|
| 443 |
|
|---|
| 444 | my $full_id = $id . "r" . $record_number;
|
|---|
| 445 | if ($self->{'OIDtype'} eq "assigned") {
|
|---|
| 446 | my $identifier = $doc_obj->get_metadata_element ($doc_obj->get_top_section(), $self->{'OIDmetadata'});
|
|---|
| 447 | if (defined $identifier && $identifier ne "") {
|
|---|
| 448 | $full_id = $identifier;
|
|---|
| 449 | $full_id = &util::tidy_up_oid($full_id);
|
|---|
| 450 | }
|
|---|
| 451 | }
|
|---|
| 452 | $doc_obj->set_OID($full_id);
|
|---|
| 453 | }
|
|---|
| 454 |
|
|---|
| 455 | sub xml_text {
|
|---|
| 456 | my $self = shift(@_);
|
|---|
| 457 | my ($expat) = @_;
|
|---|
| 458 |
|
|---|
| 459 | my $text = $_;
|
|---|
| 460 | my $escaped_text = $self->escape_text($_);
|
|---|
| 461 |
|
|---|
| 462 | # protect against & in raw text file
|
|---|
| 463 | $text =~ s/&/&/g; # can't have & in raw form, even in 'raw' xml text
|
|---|
| 464 |
|
|---|
| 465 | ## store the text of a marc code, for exapmle 520a=>A poem about....
|
|---|
| 466 | if ($self->{'current_element'} eq "subfield" and $self->{'current_code'} ne "" and $_ ne "" ){
|
|---|
| 467 | ##stored it in the marc_mapping
|
|---|
| 468 |
|
|---|
| 469 | my $current_tag = $self->{'current_tag'};
|
|---|
| 470 | my $current_code = $self->{'current_code'};
|
|---|
| 471 |
|
|---|
| 472 | $self->{'marc_mapping'}->{$current_tag}->{$current_code} .= $_;
|
|---|
| 473 |
|
|---|
| 474 | $self->{'current_code'} = "";
|
|---|
| 475 | }
|
|---|
| 476 |
|
|---|
| 477 | $self->{'content'} .= $escaped_text;
|
|---|
| 478 | $self->{'xmlcontent'} .= $text;
|
|---|
| 479 |
|
|---|
| 480 | }
|
|---|
| 481 |
|
|---|
| 482 | sub calculate_indent{
|
|---|
| 483 | my ($self,$num) = @_;
|
|---|
| 484 |
|
|---|
| 485 | my $indent ="";
|
|---|
| 486 |
|
|---|
| 487 | for (my $i=0; $i<$num;$i++){
|
|---|
| 488 | $indent .= " ";
|
|---|
| 489 | }
|
|---|
| 490 |
|
|---|
| 491 | return $indent;
|
|---|
| 492 |
|
|---|
| 493 | }
|
|---|
| 494 |
|
|---|
| 495 | sub escape_text {
|
|---|
| 496 | my ($self,$text) = @_;
|
|---|
| 497 | # special characters in the xml encoding
|
|---|
| 498 | $text =~ s/&/&/g; # this has to be first...
|
|---|
| 499 | $text =~ s/</</g;
|
|---|
| 500 | $text =~ s/>/>/g;
|
|---|
| 501 | $text =~ s/\"/"/g;
|
|---|
| 502 |
|
|---|
| 503 | return $text;
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 |
|
|---|
| 507 | sub unescape_text {
|
|---|
| 508 | my ($self,$text) = @_;
|
|---|
| 509 | # special characters in the xml encoding
|
|---|
| 510 | $text =~ s/</</g;
|
|---|
| 511 | $text =~ s/>/>/g;
|
|---|
| 512 | $text =~ s/"/\"/g;
|
|---|
| 513 |
|
|---|
| 514 | $text =~ s/&/&/g; # can't have & in raw form, even in unescaped xml!
|
|---|
| 515 |
|
|---|
| 516 | return $text;
|
|---|
| 517 | }
|
|---|
| 518 |
|
|---|
| 519 |
|
|---|
| 520 | 1;
|
|---|
| 521 |
|
|---|
| 522 |
|
|---|
