| 1 | ###########################################################################
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| 2 | #
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| 3 | # collConfigxml.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) 1999 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 | # reads in configuration files of xml form
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| 27 |
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| 28 | package collConfigxml;
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| 29 | use strict;
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| 30 | no strict 'refs';
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| 31 | no strict 'subs';
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| 32 |
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| 33 | # Wrapper that ensures the right version of XML::Parser is loaded given
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| 34 | # the version of Perl being used. Need to distinguish between Perl 5.6 and
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| 35 | # Perl 5.8
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| 36 | sub BEGIN {
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| 37 | my $perl_dir;
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| 38 |
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| 39 | # Note: $] encodes the version number of perl
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| 40 | if ($]>5.008) {
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| 41 | # perl 5.8.1 or above
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| 42 | $perl_dir = "perl-5.8";
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| 43 | }
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| 44 | elsif ($]<5.008) {
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| 45 | # assume perl 5.6
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| 46 | $perl_dir = "perl-5.6";
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| 47 | }
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| 48 | else {
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| 49 | print STDERR "Warning: Perl 5.8.0 is not a maintained release.\n";
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| 50 | print STDERR " Please upgrade to a newer version of Perl.\n";
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| 51 | $perl_dir = "perl-5.8";
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| 52 | }
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| 53 |
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| 54 | if ($ENV{'GSDLOS'} !~ /^windows$/i) {
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| 55 | # Use push to put this on the end, so an existing XML::Parser will be used by default
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| 56 | push (@INC, "$ENV{'GSDLHOME'}/perllib/cpan/$perl_dir");
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | use XML::Parser;
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| 61 |
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| 62 | # A mapping hash to resolve name discrepancy between gs2 and gs3.
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| 63 | my $nameMap = {"key" => "value",
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| 64 | "creator" => "creator",
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| 65 | "maintainer" => "maintainer",
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| 66 | "public" => "public",
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| 67 | "infodb" => "infodbtype",
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| 68 | "defaultIndex" => "defaultindex",
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| 69 | "defaultLevel" => "defaultlevel",
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| 70 | "name" => "collectionname",
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| 71 | "description" => "collectionextra",
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| 72 | "smallicon" => "iconcollectionsmall",
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| 73 | "icon" => "iconcollection",
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| 74 | "level" => "levels",
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| 75 | "classifier" => "classify",
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| 76 | "indexSubcollection" => "indexsubcollections",
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| 77 | "indexLanguage" => "languages",
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| 78 | "defaultIndexLanguage" => "defaultlanguage",
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| 79 | "index" => "indexes",
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| 80 | "plugin" => "plugin",
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| 81 | "plugout" => "plugout",
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| 82 | "indexOption" => "indexoptions",
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| 83 | "searchType" => "searchtype",
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| 84 | "languageMetadata" => "languagemetadata",
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| 85 | "buildType" => "buildtype"
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| 86 | };
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| 87 | # A hash structure which is returned by sub read_cfg_file.
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| 88 | my $data = {};
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| 89 |
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| 90 | my $repeatedBlock = q/^(browse|pluginList)$/;
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| 91 |
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| 92 | # use those unique attribute values to locate the text within the elements
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| 93 | # creator, public, maintainer and within a displayItem.
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| 94 | my $currentLocation = "";
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| 95 | my $stringexp = q/^(creator|maintainer|public|buildType)$/;
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| 96 | my $displayItemNames = q/^(name|description)$/;
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| 97 |
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| 98 | # For storing the attributes during the StartTag subroutine, so that
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| 99 | # we can use it later in Text (or EndTag) subroutines
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| 100 | my $currentAttrRef = undef;
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| 101 |
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| 102 | my $currentLevel = "";
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| 103 |
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| 104 | # Count the elements with same name within the same block
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| 105 | # ("plugin", "option")
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| 106 | my $currentIndex = 0;
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| 107 | my $arrayexp = q/^(index|level|indexSubcollection|indexLanguage)$/;
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| 108 | my $arrayarrayexp= q/^(plugin|classifier)$/;
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| 109 | my $hashexp = q/^(subcollection)$/; # add other element names that should be represented by hash expressions here
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| 110 | my $hashhashexp = q/^(displayItem)$/; # add other (collectionmeta) element names that should be represented by hashes of hashes here.
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| 111 |
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| 112 | my $defaults = q/^(defaultIndex|defaultLevel|defaultIndexLanguage|languageMetadata)$/;
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| 113 |
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| 114 | # Reads in the model collection configuration file, collectionConfig.xml,
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| 115 | # into a structure which complies with the one used by gs2 (i.e. one read
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| 116 | # in by &cfgread::read_cfg_file).
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| 117 | sub read_cfg_file {
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| 118 | my ($filename) = @_;
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| 119 | $data = {};
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| 120 | if ($filename !~ /collectionConfig\.xml$/ || !-f $filename) {
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| 121 | return undef;
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| 122 | }
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| 123 |
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| 124 | # create XML::Parser object for parsing metadata.xml files
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| 125 | my $parser;
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| 126 | if ($]<5.008) {
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| 127 | # Perl 5.6
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| 128 | $parser = new XML::Parser('Style' => 'Stream',
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| 129 | 'Handlers' => {'Char' => \&Char,
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| 130 | 'Doctype' => \&Doctype
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| 131 | });
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| 132 | }
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| 133 | else {
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| 134 | # Perl 5.8
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| 135 | $parser = new XML::Parser('Style' => 'Stream',
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| 136 | 'ProtocolEncoding' => 'ISO-8859-1',
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| 137 | 'Handlers' => {'Char' => \&Char,
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| 138 | 'Doctype' => \&Doctype
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| 139 | });
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| 140 | }
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| 141 |
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| 142 | if (!open (COLCFG, $filename)) {
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| 143 | print STDERR "cfgread::read_cfg_file couldn't read the cfg file $filename\n";
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| 144 | } else {
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| 145 |
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| 146 | $parser->parsefile ($filename);# (COLCFG);
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| 147 | close (COLCFG);
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| 148 | }
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| 149 |
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| 150 | #&Display;
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| 151 | return $data;
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| 152 | }
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| 153 |
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| 154 | sub StartTag {
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| 155 | # Those marked with #@ will not be executed at the same time when this sub is being called
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| 156 | # so that if/elsif is used to avoid unnecessary tests
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| 157 | my ($expat, $element) = @_;
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| 158 |
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| 159 | # See http://search.cpan.org/~msergeant/XML-Parser-2.36/Parser.pm#Stream
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| 160 | # %_ is a hash of all the attributes of this element, we want to store them so we can use the attributes
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| 161 | # when the textnode contents of the element are parsed in the subroutine Text (that's the handler for Text).
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| 162 | $currentAttrRef = \%_;
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| 163 |
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| 164 | my $name = $_{'name'};
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| 165 | my $value = $_{'value'};
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| 166 | my $type = $_{'type'};
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| 167 |
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| 168 | # for subcollections
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| 169 | my $filter = $_{'filter'};
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| 170 |
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| 171 | # was this just a flax thing??
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| 172 | my $assigned = $_{'assigned'};
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| 173 |
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| 174 | #@ Marking repeated block
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| 175 | if ($element =~ /$repeatedBlock/) {
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| 176 | $currentIndex = 0;
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| 177 | }
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| 178 |
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| 179 | #@ handling block metadataList
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| 180 | elsif (defined $name and $name =~ /$stringexp/){
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| 181 | $currentLocation = $name;
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| 182 | }
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| 183 | #@ handling default search index/level/indexLanguage and languageMetadata
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| 184 | elsif ($element =~ /$defaults/) {
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| 185 | if (defined $name and $name =~ /\w/) {
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| 186 | $data->{$nameMap->{$element}} = $name;
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| 187 | }
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| 188 | }
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| 189 |
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| 190 | #@ handling the displayItems name and description (known as collectionname and collectionextra in GS2)
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| 191 | elsif($element eq "displayItemList") {
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| 192 | $currentLevel = "displayItemList"; # storing the parent if it is displayItemList
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| 193 | }
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| 194 | elsif($element =~ /$hashhashexp/) { # can expand on this to check for other collectionmeta elements
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| 195 | if((!defined $assigned) || (defined $assigned and $assigned =~ /\w/ and $assigned eq "true")) {
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| 196 | # either when there is no "assigned" attribute, or when assigned=true (for displayItems):
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| 197 | $currentLocation = $name;
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| 198 | }
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| 199 | }
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| 200 |
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| 201 | #@ Handling database type: gdbm or gdbm-txtgz, later jdbm.
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| 202 | elsif ($element eq "infodb") {
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| 203 | $data->{'infodbtype'} = $type;
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| 204 | }
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| 205 |
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| 206 | #@ Handling indexer: mgpp/mg/lucene; stringexp
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| 207 | elsif ($element eq "search") {
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| 208 | $data->{'buildtype'} = $type;
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| 209 | }
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| 210 |
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| 211 | #@ Handling searchtype: plain,form; arrayexp
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| 212 | #elsif ($element eq "format" and defined $name and $name =~ /searchType/) {
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| 213 | #@ Handling searchtype: plain, form
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| 214 | #$currentLocation = $name;
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| 215 | #}
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| 216 |
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| 217 | #@ Handle index|level|indexSubcollection|indexLanguage
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| 218 | elsif ($element =~ /$arrayexp/) {
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| 219 | my $key = $nameMap->{$element};
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| 220 | if (!defined $data->{$key}) {
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| 221 | $data->{$key} = [];
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| 222 | }
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| 223 |
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| 224 | push (@{$data->{$key}},$name);
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| 225 | }
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| 226 |
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| 227 | #@ indexoptions: accentfold/casefold/stem; arrayexp
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| 228 | elsif ($element eq "indexOption") {
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| 229 | $currentLevel = "indexOption";
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| 230 | }
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| 231 | if ($currentLevel eq "indexOption" and $element eq "option") {
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| 232 | my $key = $nameMap->{$currentLevel};
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| 233 | if (!defined $data->{$key}) {
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| 234 | $data->{$key} = [];
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| 235 | }
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| 236 | push (@{$data->{$key}},$name);
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| 237 | }
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| 238 | #@ plugout options
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| 239 | elsif ($element eq "plugout") {
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| 240 | $currentLevel = "plugout";
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| 241 | my $key = $nameMap->{$currentLevel};
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| 242 | if (!defined $data->{$key}) {
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| 243 | $data->{$key} = [];
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| 244 | }
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| 245 | if(defined $name and $name ne ""){
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| 246 | push (@{$data->{$key}},$name);
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| 247 | }
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| 248 | else{
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| 249 | push (@{$data->{$key}},"GreenstoneXMLPlugout");
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| 250 | }
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| 251 | }
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| 252 | if ($currentLevel eq "plugout" and $element eq "option") {
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| 253 | my $key = $nameMap->{$currentLevel};
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| 254 | if (defined $name and $name ne ""){
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| 255 | push (@{$data->{$key}},$name);
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| 256 | }
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| 257 | if (defined $value and $value ne ""){
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| 258 | push (@{$data->{$key}},$value);
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| 259 | }
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| 260 | }
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| 261 |
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| 262 | #@ use hash of hash of strings: hashexp
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| 263 | elsif ($element =~ /$hashexp/) {
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| 264 | if (!defined $data->{$element}) {
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| 265 | $data->{$element} = {};
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| 266 | }
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| 267 | if (defined $name and $name =~ /\w/) {
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| 268 | if (defined $filter and $filter =~ /\w/) {
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| 269 | $data->{$element}->{$name} = $filter;
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| 270 |
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| 271 | }
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| 272 | }
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| 273 | }
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| 274 |
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| 275 | #@ Handling each classifier/plugin element
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| 276 | elsif ($element =~ /$arrayarrayexp/) {
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| 277 | # find the gs2 mapping name
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| 278 | $currentLevel = $element;
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| 279 | my $key = $nameMap->{$element};
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| 280 |
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| 281 | # define an array of array of strings foreach $k (@{$data->{$key}}) {
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| 282 | if (!defined $data->{$key}) {
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| 283 | $data->{$key} = [];
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| 284 | }
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| 285 | # Push classifier/plugin name (e.g. AZList) into $data as the first string
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| 286 | push (@{$data->{$key}->[$currentIndex]},$name);
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| 287 | #print $currentIndex."indexup\n";
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| 288 | }
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| 289 |
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| 290 | #@ Handling the option elements in each classifier/plugin element (as the following strings)
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| 291 | elsif ($currentLevel =~ /$arrayarrayexp/ and $element eq "option") {
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| 292 | # find the gs2 mapping name for classifier and plugin
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| 293 | my $key = $nameMap->{$currentLevel};
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| 294 |
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| 295 | if (defined $name and $name =~ /\w/) {
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| 296 | push (@{$data->{$key}->[$currentIndex]}, $name);
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| 297 | }
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| 298 | if (defined $value and $value =~ /\w/) {
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| 299 | push (@{$data->{$key}->[$currentIndex]}, $value);
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| 300 | }
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| 301 |
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| 302 | }
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| 303 |
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| 304 | }
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| 305 |
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| 306 | sub EndTag {
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| 307 | my ($expat, $element) = @_;
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| 308 | my $endTags = q/^(browse|pluginList|displayItemList)$/;
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| 309 | if ($element =~ /$endTags/) {
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| 310 | $currentIndex = 0;
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| 311 | $currentLevel = "";
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| 312 | }
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| 313 | # $arrayarrayexp contains classifier|plugin
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| 314 | elsif($element =~ /$arrayarrayexp/ ){
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| 315 | $currentIndex = $currentIndex + 1;
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| 316 | }
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| 317 | }
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| 318 |
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| 319 | sub Text {
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| 320 | if (defined $currentLocation) {
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| 321 | #@ Handling block metadataList(creator, maintainer, public)
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| 322 | if($currentLocation =~ /$stringexp/){
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| 323 | #print $currentLocation;
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| 324 | my $key = $nameMap->{$currentLocation};
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| 325 | $data->{$key} = $_;
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| 326 | undef $currentLocation;
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| 327 | }
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| 328 |
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| 329 | #@ Handling displayItem metadata that are children of displayItemList
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| 330 | # that means we will be getting the collection's name and possibly description ('collectionextra' in GS2).
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| 331 | elsif($currentLevel eq "displayItemList" && $currentLocation =~ /$displayItemNames/) {
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| 332 | my $lang = $currentAttrRef->{'lang'};
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| 333 | my $name = $currentAttrRef->{'name'};
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| 334 |
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| 335 | # this is how data->collectionmeta's language is set in Greenstone 2.
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| 336 | # Need to be consistent, since export.pl accesses these values all in the same way
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| 337 | if(!defined $lang) {
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| 338 | $lang = 'default';
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| 339 | } else {
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| 340 | $lang = "[l=$lang]";
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| 341 | }
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| 342 |
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| 343 | if(defined $name and $name =~ /$displayItemNames/) { # attribute name = 'name' || 'description'
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| 344 | # using $nameMap->$name resolves to 'collectionname' if $name='name' and 'collectionextra' if $name='description'
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| 345 | $data->{'collectionmeta'}->{$nameMap->{$name}}->{$lang} = $_; # the value is the Text parsed
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| 346 | #print STDERR "***Found: $nameMap->{$name} collectionmeta, lang is $lang. Value: $data->{'collectionmeta'}->{$nameMap->{$name}}->{$lang}\n";
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| 347 | }
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| 348 | undef $currentLocation;
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| 349 | }
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| 350 |
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| 351 | #@ Handling searchtype: plain,form; arrayexp
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| 352 | elsif (defined $currentLocation and $currentLocation =~ /searchType/) {
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| 353 | # map 'searchType' into 'searchtype'
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| 354 | my $key = $nameMap->{$currentLocation};
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| 355 | # split it by ','
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| 356 | my ($plain, $form) = split (",", $_);
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| 357 |
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| 358 | if (!defined $data->{$key}) {
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| 359 | $data->{$key} = [];
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| 360 | }
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| 361 | if (defined $plain and $plain =~ /\w/) {
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| 362 | push @{ $data->{$key} }, $plain;
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| 363 | }
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| 364 | if (defined $form and $form =~ /\w/) {
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| 365 | push @{ $data->{$key} }, $form;
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| 366 | }
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| 367 | }
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| 368 | }
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| 369 | }
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| 370 |
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| 371 | # This sub is for debugging purposes
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| 372 | sub Display {
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| 373 | # metadataList
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| 374 | foreach my $k (keys %{$data}) {
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| 375 | print STDERR "*** metadatalist key $k\n";
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| 376 | }
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| 377 |
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| 378 | print $data->{'creator'}."\n" if (defined $data->{'creator'});
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| 379 | print $data->{"maintainer"}."\n" if (defined $data->{"maintainer"});
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| 380 | print $data->{"public"}."\n" if (defined $data->{"public"});
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| 381 | print $data->{"defaultindex"}."\n" if (defined $data->{"defaultindex"});
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| 382 | print $data->{"defaultlevel"}."\n" if (defined $data->{"defaultlevel"});
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| 383 | print $data->{"buildtype"}."\n" if (defined $data->{"buildtype"});
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| 384 | print join(",",@{$data->{"searchtype"}})."\n" if (defined $data->{"searchtype"});
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| 385 | print join(",",@{$data->{'levels'}})."\n" if (defined $data->{'levels'});
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| 386 | print join(",",@{$data->{'indexsubcollections'}})."\n" if (defined $data->{'indexsubcollections'});
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| 387 | print join(",",@{$data->{'indexes'}})."\n" if (defined $data->{'indexes'});
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| 388 | print join(",",@{$data->{'indexoptions'}})."\n" if (defined $data->{'indexoptions'});
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| 389 | print join(",",@{$data->{'languages'}})."\n" if (defined $data->{'languages'});
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| 390 | print join(",",@{$data->{'languagemetadata'}})."\n" if (defined $data->{'languagemetadata'});
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| 391 |
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| 392 | if (defined $data->{'plugin'}) {
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| 393 | foreach $a (@{$data->{'plugin'}}) {
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| 394 | print join(",",@$a);
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| 395 | print "\n";
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| 396 | }
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| 397 | }
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| 398 | if (defined $data->{'classify'}) {
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| 399 | print "Classifiers: \n";
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| 400 | map { print join(",",@$_)."\n"; } @{$data->{'classify'}};
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| 401 | }
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| 402 |
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| 403 | if (defined $data->{'subcollection'}) {
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| 404 | foreach my $key (keys %{$data->{'subcollection'}}) {
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| 405 | print "subcollection ".$key." ".$data->{'subcollection'}->{$key}."\n";
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| 406 | }
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| 407 | }
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| 408 | }
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| 409 | # is this actually used??
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| 410 | sub Doctype {
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| 411 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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| 412 |
|
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| 413 | die if ($name !~ /^CollectionConfig$/);
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| 414 | }
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| 415 |
|
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| 416 | # This Char function overrides the one in XML::Parser::Stream to overcome a
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| 417 | # problem where $expat->{Text} is treated as the return value, slowing
|
|---|
| 418 | # things down significantly in some cases.
|
|---|
| 419 | sub Char {
|
|---|
| 420 | if ($]<5.008) {
|
|---|
| 421 | use bytes; # Necessary to prevent encoding issues with XML::Parser 2.31+ and Perl 5.6
|
|---|
| 422 | }
|
|---|
| 423 | $_[0]->{'Text'} .= $_[1];
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|---|
| 424 | return undef;
|
|---|
| 425 | }
|
|---|
| 426 |
|
|---|
| 427 |
|
|---|
| 428 |
|
|---|
| 429 |
|
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| 430 | #########################################################
|
|---|
| 431 |
|
|---|
| 432 | 1;
|
|---|
