| 1 | ##########################################################################
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| 2 | #
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| 3 | # metadataaction.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) 2009 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 | package metadataaction;
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| 27 |
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| 28 | use strict;
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| 29 |
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| 30 | use cgiactions::baseaction;
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| 31 |
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| 32 | use dbutil;
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| 33 | use ghtml;
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| 34 |
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| 35 | use JSON;
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| 36 |
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| 37 | # This class is conditionally expanded with set-metadata, remove-metadata and insert-metadata subroutines
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| 38 | # defined in modmetadataaction.pm. The BEGIN code block determines whether the condition holds.
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| 39 | # See
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| 40 | # http://stackoverflow.com/questions/3998619/what-is-the-role-of-the-begin-block-in-perl
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| 41 | # http://www.perlmonks.org/?node_id=881761 - splitting module into multiple files
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| 42 | # http://www.perlmonks.org/?node_id=524456 - merging hashes
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| 43 |
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| 44 | our $modmeta_action_table; # don't init to empty hash here, else it will overwrite whatever BEGIN sets this to
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| 45 | # see http://stackoverflow.com/questions/3998619/what-is-the-role-of-the-begin-block-in-perl
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| 46 |
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| 47 | BEGIN {
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| 48 | # unshift (@INC, "$ENV{'GSDLHOME'}/perllib/cpan/perl-5.8");
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| 49 | require XML::Rules;
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| 50 |
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| 51 | # if we're GS3, then GS3_AUTHENTICATED must be defined and set to true
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| 52 | # in order to have access to subroutines that modify metadata (the set-
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| 53 | # and remove- metadata subroutines).
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| 54 | # TODO: if we're GS2, then we continue to behave as before?
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| 55 |
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| 56 | if(!defined $ENV{'GSDL3HOME'} || (defined $ENV{'GS3_AUTHENTICATED'} && $ENV{'GS3_AUTHENTICATED'} eq "true")) {
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| 57 | require modmetadataaction;
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| 58 | }
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| 59 | else {
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| 60 | $modmeta_action_table = {};
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| 61 | }
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| 62 | }
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| 63 |
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| 64 | @metadataaction::ISA = ('baseaction');
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| 65 |
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| 66 |
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| 67 | my $getmeta_action_table =
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| 68 | {
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| 69 | #GET METHODS
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| 70 | "get-import-metadata" => {
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| 71 | 'compulsory-args' => [ "d", "metaname" ],
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| 72 | 'optional-args' => [ "metapos" ] },
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| 73 |
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| 74 | "get-archives-metadata" => {
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| 75 | 'compulsory-args' => [ "d", "metaname" ],
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| 76 | 'optional-args' => [ "metapos" ] },
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| 77 |
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| 78 | "get-index-metadata" => {
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| 79 | 'compulsory-args' => [ "d", "metaname" ],
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| 80 | 'optional-args' => [ "metapos" ] },
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| 81 |
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| 82 | "get-metadata" => { # alias for get-index-metadata
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| 83 | 'compulsory-args' => [ "d", "metaname" ],
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| 84 | 'optional-args' => [ "metapos" ] },
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| 85 |
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| 86 | "get-live-metadata" => {
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| 87 | 'compulsory-args' => [ "d", "metaname" ],
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| 88 | 'optional-args' => [ ] },
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| 89 |
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| 90 | "get-metadata-array" => { # where param can be ONE of: index (default), import, archives, live
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| 91 | 'compulsory-args' => [ "json" ],
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| 92 | 'optional-args' => [ "where" ],
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| 93 | 'help-string' => [
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| 94 | 'metadata-server.pl?a=get-metadata-array&c=demo&where=index&json=[{"docid":"HASHc5bce2d6d3e5b04e470ec9","metatable":[{"metaname":"username","metapos":"all"},{"metaname":"usertimestamp","metapos":"all"}, {"metaname":"usercomment","metapos":"all"}]}]'
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| 95 | ]}
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| 96 | };
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| 97 |
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| 98 | # To get the final action_table of all available subroutines in this class,
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| 99 | # merge the get- and mod-metadata hashes. See http://www.perlmonks.org/?node_id=524456
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| 100 | # Note that modmeta_action_table will be empty of subroutines if the user does not have permissions
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| 101 | # to modify metadata.
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| 102 | my $action_table = { %$getmeta_action_table, %$modmeta_action_table };
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| 103 |
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| 104 |
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| 105 | sub new
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| 106 | {
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| 107 | my $class = shift (@_);
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| 108 | my ($gsdl_cgi,$iis6_mode) = @_;
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| 109 |
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| 110 | # Treat metavalue specially. To transmit this through a GET request
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| 111 | # the Javascript side has url-encoded it, so here we need to decode
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| 112 | # it before proceeding
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| 113 |
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| 114 | my $url_encoded_metavalue = $gsdl_cgi->param("metavalue");
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| 115 | my $url_decoded_metavalue = &unicode::url_decode($url_encoded_metavalue,1);
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| 116 | my $unicode_array = &unicode::utf82unicode($url_decoded_metavalue);
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| 117 |
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| 118 | $url_decoded_metavalue = join("",map(chr($_),@$unicode_array));
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| 119 | $gsdl_cgi->param("metavalue",$url_decoded_metavalue);
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| 120 |
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| 121 | # need to do the same with prevmetavalue
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| 122 | my $url_encoded_prevmetavalue = $gsdl_cgi->param("prevmetavalue");
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| 123 | my $url_decoded_prevmetavalue = &unicode::url_decode($url_encoded_prevmetavalue,1);
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| 124 | my $prevunicode_array = &unicode::utf82unicode($url_decoded_prevmetavalue);
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| 125 |
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| 126 | $url_decoded_prevmetavalue = join("",map(chr($_),@$prevunicode_array));
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| 127 | $gsdl_cgi->param("prevmetavalue",$url_decoded_prevmetavalue);
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| 128 |
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| 129 | my $self = new baseaction($action_table,$gsdl_cgi,$iis6_mode);
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| 130 |
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| 131 | return bless $self, $class;
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| 132 | }
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| 133 |
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| 134 |
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| 135 | sub get_live_metadata
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| 136 | {
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| 137 | my $self = shift @_;
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| 138 |
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| 139 | my $username = $self->{'username'};
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| 140 | my $collect = $self->{'collect'};
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| 141 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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| 142 | my $gsdlhome = $self->{'gsdlhome'};
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| 143 | my $infodbtype = $self->{'infodbtype'};
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| 144 |
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| 145 | # live metadata gets/saves value scoped (prefixed) by the current usename
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| 146 | # so (for now) let's not bother to enforce authentication
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| 147 |
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| 148 | # Obtain the collect dir
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| 149 | my $site = $self->{'site'};
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| 150 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
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| 151 | ## my $collect_dir = &util::filename_cat($gsdlhome, "collect");
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| 152 |
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| 153 | # No locking collection when getting metadata, only when setting it
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| 154 | # $self->lock_collection($username, $collect); # Make sure the collection isn't locked by someone else
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| 155 |
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| 156 | # look up additional args
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| 157 | my $docid = $self->{'d'};
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| 158 | if ((!defined $docid) || ($docid =~ m/^\s*$/)) {
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| 159 | $gsdl_cgi->generate_error("No docid (d=...) specified.");
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| 160 | }
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| 161 |
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| 162 | # Generate the dbkey
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| 163 | my $metaname = $self->{'metaname'};
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| 164 | my $dbkey = "$docid.$metaname";
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| 165 |
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| 166 | # To people who know $collect_tail please add some comments
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| 167 | # Obtain path to the database
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| 168 | my $collect_tail = $collect;
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| 169 | $collect_tail =~ s/^.*[\/|\\]//;
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| 170 | my $index_text_directory = &util::filename_cat($collect_dir,$collect,"index","text");
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| 171 | my $infodb_file_path = &dbutil::get_infodb_file_path($infodbtype, "live-$collect_tail", $index_text_directory);
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| 172 |
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| 173 | # Obtain the content of the key
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| 174 | my $cmd = "gdbmget $infodb_file_path $dbkey";
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| 175 | if (open(GIN,"$cmd |") == 0) {
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| 176 | # Catch error if gdbmget failed
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| 177 | my $mess = "Failed to get metadata key: $metaname\n";
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| 178 | $mess .= "$!\n";
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| 179 |
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| 180 | $gsdl_cgi->generate_error($mess);
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| 181 | }
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| 182 | else {
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| 183 | binmode(GIN,":utf8");
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| 184 | # Read everything in and concatenate them into $metavalue
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| 185 | my $metavalue = "";
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| 186 | my $line;
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| 187 | while (defined ($line=<GIN>)) {
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| 188 | $metavalue .= $line;
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| 189 | }
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| 190 | close(GIN);
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| 191 | chomp($metavalue); # Get rid off the tailing newlines
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| 192 | $gsdl_cgi->generate_ok_message("$metavalue");
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| 193 | }
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| 194 |
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| 195 | # Release the lock once it is done
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| 196 | # $self->unlock_collection($username, $collect);
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| 197 | }
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| 198 |
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| 199 | # just calls the index version
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| 200 | sub get_metadata
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| 201 | {
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| 202 | my $self = shift @_;
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| 203 | $self->get_index_metadata(@_);
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| 204 | }
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| 205 |
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| 206 | # JSON version that will get the requested metadata values
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| 207 | # from the requested source (index, import, archives or live)
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| 208 | # One of the params is a JSON string and the return value is JSON too
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| 209 | # http://forums.asp.net/t/1844684.aspx/1 - Web api method return json in string
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| 210 | sub get_metadata_array
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| 211 | {
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| 212 | my $self = shift @_;
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| 213 |
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| 214 | my $where = $self->{'where'};
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| 215 | if (!$where || ($where =~ m/^\s*$/)) { # 0, "0", "" and undef are all false. All else is true.
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| 216 | # What is truth in perl: http://www.berkeleyinternet.com/perl/node11.html
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| 217 | # and http://www.perlmonks.org/?node_id=33638
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| 218 |
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| 219 | $where = "index"; # default behaviour is to get the values from index
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| 220 | }
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| 221 |
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| 222 | # Only when setting metadata do we perform authentication and do we lock the collection,
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| 223 | # not when getting metadata
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| 224 |
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| 225 | # for get_meta_array, the where param can only be ONE of import, archives, index, live
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| 226 | if($where =~ m/index/) {
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| 227 | $self->_get_index_metadata_array(@_);
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| 228 | }
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| 229 | elsif($where =~ m/archives/) {
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| 230 | $self->_get_archives_metadata_array(@_);
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| 231 | }
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| 232 | elsif($where =~ m/import/) {
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| 233 | $self->_get_import_metadata_array(@_);
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| 234 | }
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| 235 | elsif($where =~ m/live/) {
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| 236 | $self->_get_live_metadata_array(@_);
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| 237 | }
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| 238 | }
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| 239 |
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| 240 | # Unused at present. Added for completion. Tested.
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| 241 | sub _get_import_metadata_array {
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| 242 |
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| 243 | my $self = shift @_;
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| 244 |
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| 245 | my $collect = $self->{'collect'};
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| 246 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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| 247 | my $site = $self->{'site'};
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| 248 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
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| 249 |
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| 250 | # look up additional args
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| 251 | my $infodbtype = $self->{'infodbtype'};
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| 252 |
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| 253 | my $archive_dir = &util::filename_cat($collect_dir, $collect, "archives");
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| 254 | my $arcinfo_doc_filename = &dbutil::get_infodb_file_path($infodbtype, "archiveinf-doc", $archive_dir);
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| 255 | my $json_str = $self->{'json'};
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| 256 | my $doc_array = decode_json $json_str;
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| 257 |
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| 258 | my $json_result_str = "[";
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| 259 | my $first_doc_rec = 1;
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| 260 | foreach my $doc_array_rec ( @$doc_array ) {
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| 261 |
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| 262 | my $docid = $doc_array_rec->{'docid'}; # no subsection metadata support in metadata.xml, only toplevel meta
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| 263 |
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| 264 | if($first_doc_rec) {
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| 265 | $first_doc_rec = 0;
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| 266 | } else {
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| 267 | $json_result_str .= ",";
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| 268 | }
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| 269 | $json_result_str = $json_result_str . "{\"docid\":\"" . $docid . "\"";
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| 270 |
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| 271 | my $metatable = $doc_array_rec->{'metatable'}; # a subarray, or need to generate an error saying JSON structure is wrong
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| 272 | $json_result_str = $json_result_str . ",\"metatable\":[";
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| 273 |
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| 274 | my $first_rec = 1;
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| 275 | foreach my $metatable_rec ( @$metatable ) { # the subarray metatable is an array of hashmaps
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| 276 |
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| 277 | # Read the docid entry
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| 278 | my $doc_rec = &dbutil::read_infodb_entry($infodbtype, $arcinfo_doc_filename, $docid);
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| 279 | # This now stores the full pathname
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| 280 | my $import_filename = $doc_rec->{'src-file'}->[0];
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| 281 | $import_filename = &util::placeholders_to_abspath($import_filename);
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| 282 |
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| 283 | # figure out correct metadata.xml file [?]
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| 284 | # Assuming the metadata.xml file is next to the source file
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| 285 | # Note: This will not work if it is using the inherited metadata from the parent folder
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| 286 | my ($import_tailname, $import_dirname) = File::Basename::fileparse($import_filename);
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| 287 | my $metadata_xml_filename = &util::filename_cat($import_dirname, "metadata.xml");
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| 288 |
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| 289 |
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| 290 | if($first_rec) {
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| 291 | $first_rec = 0;
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| 292 | } else {
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| 293 | $json_result_str .= ",";
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| 294 | }
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| 295 |
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| 296 | my $metaname = $metatable_rec->{'metaname'};
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| 297 | $json_result_str .= "{\"metaname\":\"$metaname\",\"metavals\":[";
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| 298 |
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| 299 | my $metapos = $metatable_rec->{'metapos'}; # 0... 1|all|undefined
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| 300 | if(!defined $metapos) {
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| 301 | $metapos = 0;
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| 302 | }
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| 303 |
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| 304 | # Obtain the specified metadata value(s)
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| 305 | my $metavalue;
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| 306 |
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| 307 | if($metapos ne "all") { # get the value at a single metapos
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| 308 | $metavalue = $self->get_metadata_from_metadata_xml($gsdl_cgi, $metadata_xml_filename, $metaname, $metapos, $import_tailname);
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| 309 |
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| 310 | #print STDERR "**** Metafilename, metaname, metapos, sec_num: $metadata_xml_filename, $metaname, $metapos, $import_tailname\n";
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| 311 |
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| 312 | $json_result_str .= "{\"metapos\":\"$metapos\",\"metavalue\":\"$metavalue\"}";
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| 313 |
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| 314 | } else {
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| 315 | my $first_metaval = 1;
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| 316 | $metapos = 0;
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| 317 | $metavalue = $self->get_metadata_from_metadata_xml($gsdl_cgi, $metadata_xml_filename, $metaname, $metapos, $import_tailname);
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| 318 |
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| 319 | while (defined $metavalue && $metavalue ne "") {
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| 320 | if($first_metaval) {
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| 321 | $first_metaval = 0;
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| 322 | } else {
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| 323 | $json_result_str .= ",";
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| 324 | }
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| 325 |
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| 326 | $json_result_str .= "{\"metapos\":\"$metapos\",\"metavalue\":\"$metavalue\"}";
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| 327 |
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| 328 | $metapos++;
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| 329 | $metavalue = $self->get_metadata_from_metadata_xml($gsdl_cgi, $metadata_xml_filename, $metaname, $metapos, $import_tailname);
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| 330 | }
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| 331 | }
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| 332 |
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| 333 | $json_result_str .= "]}"; # close metavals array and metatable record
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| 334 | }
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| 335 |
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| 336 | $json_result_str .= "]}"; # close metatable array and docid record
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| 337 | }
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| 338 |
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| 339 | $json_result_str .= "]"; # close array of docids
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| 340 | $gsdl_cgi->generate_ok_message($json_result_str."\n");
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| 341 | }
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| 342 |
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| 343 | # Unused method, but included for completion. Tested, works. Takes a JSON string and returns a JSON string.
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| 344 | # For more information on the format of the output, see _get_index_metadata_array, which is in use.
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| 345 | sub _get_archives_metadata_array {
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| 346 |
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| 347 | my $self = shift @_;
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| 348 |
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| 349 | my $collect = $self->{'collect'};
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| 350 | my $gsdl_cgi = $self->{'gsdl_cgi'};
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| 351 | my $site = $self->{'site'};
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| 352 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
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| 353 |
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| 354 | # look up additional args
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| 355 | my $infodbtype = $self->{'infodbtype'};
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| 356 |
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| 357 | my $archive_dir = &util::filename_cat($collect_dir, $collect, "archives");
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| 358 | my $arcinfo_doc_filename = &dbutil::get_infodb_file_path($infodbtype, "archiveinf-doc", $archive_dir);
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| 359 |
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| 360 | my $json_str = $self->{'json'};
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| 361 | my $doc_array = decode_json $json_str;
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| 362 |
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| 363 | my $json_result_str = "[";
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| 364 | my $first_doc_rec = 1;
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| 365 | foreach my $doc_array_rec ( @$doc_array ) {
|
|---|
| 366 |
|
|---|
| 367 | my $docid = $doc_array_rec->{'docid'};
|
|---|
| 368 |
|
|---|
| 369 | if($first_doc_rec) {
|
|---|
| 370 | $first_doc_rec = 0;
|
|---|
| 371 | } else {
|
|---|
| 372 | $json_result_str .= ",";
|
|---|
| 373 | }
|
|---|
| 374 | $json_result_str = $json_result_str . "{\"docid\":\"" . $docid . "\"";
|
|---|
| 375 |
|
|---|
| 376 | my $metatable = $doc_array_rec->{'metatable'}; # a subarray, or need to generate an error saying JSON structure is wrong
|
|---|
| 377 | $json_result_str = $json_result_str . ",\"metatable\":[";
|
|---|
| 378 |
|
|---|
| 379 | my $first_rec = 1;
|
|---|
| 380 | foreach my $metatable_rec ( @$metatable ) { # the subarray metatable is an array of hashmaps
|
|---|
| 381 |
|
|---|
| 382 | my ($docid, $docid_secnum) = ($doc_array_rec->{'docid'} =~ m/^(.*?)(\..*)?$/);
|
|---|
| 383 | $docid_secnum = "" if (!defined $docid_secnum);
|
|---|
| 384 |
|
|---|
| 385 | # Read the docid entry
|
|---|
| 386 | my $doc_rec = &dbutil::read_infodb_entry($infodbtype, $arcinfo_doc_filename, $docid);
|
|---|
| 387 | # This now stores the full pathname
|
|---|
| 388 | my $doc_filename = $doc_rec->{'doc-file'}->[0];
|
|---|
| 389 | $doc_filename = &util::filename_cat($archive_dir, $doc_filename);
|
|---|
| 390 |
|
|---|
| 391 | if($first_rec) {
|
|---|
| 392 | $first_rec = 0;
|
|---|
| 393 | } else {
|
|---|
| 394 | $json_result_str .= ",";
|
|---|
| 395 | }
|
|---|
| 396 |
|
|---|
| 397 | my $metaname = $metatable_rec->{'metaname'};
|
|---|
| 398 | $json_result_str .= "{\"metaname\":\"$metaname\",\"metavals\":[";
|
|---|
| 399 |
|
|---|
| 400 | my $metapos = $metatable_rec->{'metapos'}; # 0... 1|all|undefined
|
|---|
| 401 | if(!defined $metapos) {
|
|---|
| 402 | $metapos = 0;
|
|---|
| 403 | }
|
|---|
| 404 |
|
|---|
| 405 |
|
|---|
| 406 | # Obtain the specified metadata value(s)
|
|---|
| 407 | my $metavalue;
|
|---|
| 408 |
|
|---|
| 409 | if($metapos ne "all") { # get the value at a single metapos
|
|---|
| 410 |
|
|---|
| 411 | $metavalue = $self->get_metadata_from_archive_xml($gsdl_cgi, $doc_filename, $metaname, $metapos, $docid_secnum);
|
|---|
| 412 | #print STDERR "**** Docname, metaname, metapos, sec_num: $doc_filename, $metaname, $metapos, $docid_secnum\n";
|
|---|
| 413 |
|
|---|
| 414 | $json_result_str .= "{\"metapos\":\"$metapos\",\"metavalue\":\"$metavalue\"}";
|
|---|
| 415 |
|
|---|
| 416 | } else {
|
|---|
| 417 | my $first_metaval = 1;
|
|---|
| 418 | $metapos = 0;
|
|---|
| 419 | $metavalue = $self->get_metadata_from_archive_xml($gsdl_cgi, $doc_filename, $metaname, $metapos, $docid_secnum);
|
|---|
| 420 |
|
|---|
| 421 | while (defined $metavalue && $metavalue ne "") {
|
|---|
| 422 | if($first_metaval) {
|
|---|
| 423 | $first_metaval = 0;
|
|---|
| 424 | } else {
|
|---|
| 425 | $json_result_str .= ",";
|
|---|
| 426 | }
|
|---|
| 427 |
|
|---|
| 428 | $json_result_str .= "{\"metapos\":\"$metapos\",\"metavalue\":\"$metavalue\"}";
|
|---|
| 429 |
|
|---|
| 430 | $metapos++;
|
|---|
| 431 | $metavalue = $self->get_metadata_from_archive_xml($gsdl_cgi, $doc_filename, $metaname, $metapos, $docid_secnum);
|
|---|
| 432 | }
|
|---|
| 433 | }
|
|---|
| 434 |
|
|---|
| 435 | $json_result_str .= "]}"; # close metavals array and metatable record
|
|---|
| 436 | }
|
|---|
| 437 |
|
|---|
| 438 | $json_result_str .= "]}"; # close metatable array and docid record
|
|---|
| 439 | }
|
|---|
| 440 |
|
|---|
| 441 | $json_result_str .= "]"; # close array of docids
|
|---|
| 442 | $gsdl_cgi->generate_ok_message($json_result_str."\n");
|
|---|
| 443 | }
|
|---|
| 444 |
|
|---|
| 445 |
|
|---|
| 446 | # Unused at present. Added for completion. Tested, but not sure if it retrieves metadata in the manner it's expected to.
|
|---|
| 447 | sub _get_live_metadata_array
|
|---|
| 448 | {
|
|---|
| 449 | my $self = shift @_;
|
|---|
| 450 |
|
|---|
| 451 | my $collect = $self->{'collect'};
|
|---|
| 452 | my $gsdl_cgi = $self->{'gsdl_cgi'};
|
|---|
| 453 | my $site = $self->{'site'};
|
|---|
| 454 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
|
|---|
| 455 |
|
|---|
| 456 | # look up additional args
|
|---|
| 457 | my $infodbtype = $self->{'infodbtype'};
|
|---|
| 458 |
|
|---|
| 459 | # To people who know $collect_tail please add some comments
|
|---|
| 460 | # Obtain the path to the database
|
|---|
| 461 | my $collect_tail = $collect;
|
|---|
| 462 | $collect_tail =~ s/^.*[\/|\\]//;
|
|---|
| 463 | my $index_text_directory = &util::filename_cat($collect_dir,$collect,"index","text");
|
|---|
| 464 | my $infodb_file_path = &dbutil::get_infodb_file_path($infodbtype, "live-$collect_tail", $index_text_directory);
|
|---|
| 465 |
|
|---|
| 466 | my $json_str = $self->{'json'};
|
|---|
| 467 | my $doc_array = decode_json $json_str;
|
|---|
| 468 |
|
|---|
| 469 | my $json_result_str = "[";
|
|---|
| 470 | my $first_doc_rec = 1;
|
|---|
| 471 |
|
|---|
| 472 | foreach my $doc_array_rec ( @$doc_array ) {
|
|---|
| 473 |
|
|---|
| 474 | my $docid = $doc_array_rec->{'docid'};
|
|---|
| 475 |
|
|---|
| 476 | if($first_doc_rec) {
|
|---|
| 477 | $first_doc_rec = 0;
|
|---|
| 478 | } else {
|
|---|
| 479 | $json_result_str .= ",";
|
|---|
| 480 | }
|
|---|
| 481 | $json_result_str = $json_result_str . "{\"docid\":\"" . $docid . "\"";
|
|---|
| 482 |
|
|---|
| 483 | my $metatable = $doc_array_rec->{'metatable'}; # a subarray, or need to generate an error saying JSON structure is wrong
|
|---|
| 484 | $json_result_str = $json_result_str . ",\"metatable\":[";
|
|---|
| 485 |
|
|---|
| 486 | my $first_rec = 1;
|
|---|
| 487 | foreach my $metatable_rec ( @$metatable ) { # the subarray metatable is an array of hashmaps
|
|---|
| 488 | if($first_rec) {
|
|---|
| 489 | $first_rec = 0;
|
|---|
| 490 | } else {
|
|---|
| 491 | $json_result_str .= ",";
|
|---|
| 492 | }
|
|---|
| 493 |
|
|---|
| 494 | my $metaname = $metatable_rec->{'metaname'};
|
|---|
| 495 | $json_result_str .= "{\"metaname\":\"$metaname\",\"metavals\":[";
|
|---|
| 496 |
|
|---|
| 497 | # Generate the dbkey
|
|---|
| 498 | my $dbkey = "$docid.$metaname";
|
|---|
| 499 |
|
|---|
| 500 | # metapos for get_live_metadata is always assumed to be "all".
|
|---|
| 501 | # It's always going to get all the lines of metavalues associated with a metaname
|
|---|
| 502 | # (It's the metaname itself that should contain an increment number, if there are to be multiple values).
|
|---|
| 503 | #my $metapos = "all";
|
|---|
| 504 | my $metapos = $metatable_rec->{'metapos'} || 0; # Can be 0... 1|all|undefined. Defaults to 0 if undefined/false
|
|---|
| 505 | my $metavalue = "";
|
|---|
| 506 |
|
|---|
| 507 | # Obtain the content of the key
|
|---|
| 508 | my $cmd = "gdbmget $infodb_file_path $dbkey";
|
|---|
| 509 | if (open(GIN,"$cmd |") != 0) { # Success.
|
|---|
| 510 |
|
|---|
| 511 | binmode(GIN,":utf8");
|
|---|
| 512 | # Read everything in and concatenate them into $metavalue
|
|---|
| 513 | my $line;
|
|---|
| 514 | my $first_metaval = 1;
|
|---|
| 515 | my $pos = 0;
|
|---|
| 516 | while (defined ($line=<GIN>)) {
|
|---|
| 517 | chomp($line); # Get rid off the tailing newlines
|
|---|
| 518 |
|
|---|
| 519 | if($metapos eq "all") {
|
|---|
| 520 | if($first_metaval) {
|
|---|
| 521 | $first_metaval = 0;
|
|---|
| 522 | } else {
|
|---|
| 523 | $json_result_str .= ",";
|
|---|
| 524 | }
|
|---|
| 525 | $metavalue = $line;
|
|---|
| 526 | $json_result_str .= "{\"metapos\":\"$pos\",\"metavalue\":\"$metavalue\"}";
|
|---|
| 527 | } elsif($metapos == $pos) {
|
|---|
| 528 | $metavalue = $line;
|
|---|
| 529 | $json_result_str .= "{\"metapos\":\"$metapos\",\"metavalue\":\"$metavalue\"}";
|
|---|
| 530 | last;
|
|---|
| 531 | } # else, the current $pos is not the required $metapos
|
|---|
| 532 | $pos += 1;
|
|---|
| 533 | }
|
|---|
| 534 | close(GIN);
|
|---|
| 535 | } # else open cmd == 0 (failed) and metavals array will be empty [] for this metaname
|
|---|
| 536 |
|
|---|
| 537 | $json_result_str .= "]}"; # close metavals array and metatable record
|
|---|
| 538 | }
|
|---|
| 539 |
|
|---|
| 540 | $json_result_str .= "]}"; # close metatable array and docid record
|
|---|
| 541 | }
|
|---|
| 542 |
|
|---|
| 543 | $json_result_str .= "]"; # close array of docids
|
|---|
| 544 |
|
|---|
| 545 | $gsdl_cgi->generate_ok_message($json_result_str."\n");
|
|---|
| 546 | }
|
|---|
| 547 |
|
|---|
| 548 |
|
|---|
| 549 | # Takes a JSON string and returns a JSON string
|
|---|
| 550 | # Request string is of the form:
|
|---|
| 551 | # http://localhost:8283/greenstone/cgi-bin/metadata-server.pl?a=get-metadata-array&c=demo&where=index&json=[{"docid":"HASHc5bce2d6d3e5b04e470ec9","metatable":[{"metaname":"username","metapos":"all"},{"metaname":"usertimestamp","metapos":"all"}, {"metaname":"usercomment","metapos":"all"}]}]
|
|---|
| 552 | # Resulting string is of the form:
|
|---|
| 553 | # [{"docid":"HASHc5bce2d6d3e5b04e470ec9","metatable":[{"metaname":"username","metavals":[{"metapos":"0","metavalue":"me"},{"metapos":"1","metavalue":"admin"}]},{"metaname":"usertimestamp","metavals":[{"metapos":"0","metavalue":"1367900586888"},{"metapos":"1","metavalue":"1367900616574"}]},{"metaname":"usercomment","metavals":[{"metapos":"0","metavalue":"Hi"},{"metapos":"1","metavalue":"Hello"}]}]}]
|
|---|
| 554 | sub _get_index_metadata_array
|
|---|
| 555 | {
|
|---|
| 556 | my $self = shift @_;
|
|---|
| 557 |
|
|---|
| 558 | my $collect = $self->{'collect'};
|
|---|
| 559 | my $gsdl_cgi = $self->{'gsdl_cgi'};
|
|---|
| 560 | my $site = $self->{'site'};
|
|---|
| 561 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
|
|---|
| 562 |
|
|---|
| 563 | # look up additional args
|
|---|
| 564 | my $infodbtype = $self->{'infodbtype'};
|
|---|
| 565 |
|
|---|
| 566 | # To people who know $collect_tail please add some comments
|
|---|
| 567 | # Obtain the path to the database
|
|---|
| 568 | my $collect_tail = $collect;
|
|---|
| 569 | $collect_tail =~ s/^.*[\/|\\]//;
|
|---|
| 570 | my $index_text_directory = &util::filename_cat($collect_dir,$collect,"index","text");
|
|---|
| 571 | my $infodb_file_path = &dbutil::get_infodb_file_path($infodbtype, $collect_tail, $index_text_directory);
|
|---|
| 572 |
|
|---|
| 573 | my $json_str = $self->{'json'};
|
|---|
| 574 | my $doc_array = decode_json $json_str;
|
|---|
| 575 |
|
|---|
| 576 | my $json_result_str = "[";
|
|---|
| 577 | my $first_doc_rec = 1;
|
|---|
| 578 |
|
|---|
| 579 | foreach my $doc_array_rec ( @$doc_array ) {
|
|---|
| 580 |
|
|---|
| 581 | my $docid = $doc_array_rec->{'docid'};
|
|---|
| 582 |
|
|---|
| 583 | if($first_doc_rec) {
|
|---|
| 584 | $first_doc_rec = 0;
|
|---|
| 585 | } else {
|
|---|
| 586 | $json_result_str .= ",";
|
|---|
| 587 | }
|
|---|
| 588 | $json_result_str = $json_result_str . "{\"docid\":\"" . $docid . "\"";
|
|---|
| 589 |
|
|---|
| 590 | my $metatable = $doc_array_rec->{'metatable'}; # a subarray, or need to generate an error saying JSON structure is wrong
|
|---|
| 591 | $json_result_str = $json_result_str . ",\"metatable\":[";
|
|---|
| 592 |
|
|---|
| 593 | my $first_rec = 1;
|
|---|
| 594 | foreach my $metatable_rec ( @$metatable ) { # the subarray metatable is an array of hashmaps
|
|---|
| 595 | if($first_rec) {
|
|---|
| 596 | $first_rec = 0;
|
|---|
| 597 | } else {
|
|---|
| 598 | $json_result_str .= ",";
|
|---|
| 599 | }
|
|---|
| 600 |
|
|---|
| 601 | my $metaname = $metatable_rec->{'metaname'};
|
|---|
| 602 | $json_result_str .= "{\"metaname\":\"$metaname\",\"metavals\":[";
|
|---|
| 603 |
|
|---|
| 604 | my $metapos = $metatable_rec->{'metapos'}; # 0... 1|all|undefined
|
|---|
| 605 | if(!defined $metapos) {
|
|---|
| 606 | $metapos = 0;
|
|---|
| 607 | }
|
|---|
| 608 |
|
|---|
| 609 | # Read the docid entry
|
|---|
| 610 | my $doc_rec = &dbutil::read_infodb_entry($infodbtype, $infodb_file_path, $docid);
|
|---|
| 611 |
|
|---|
| 612 | # Basically loop through and unescape_html the values
|
|---|
| 613 | foreach my $k (keys %$doc_rec) {
|
|---|
| 614 | my @escaped_v = ();
|
|---|
| 615 | foreach my $v (@{$doc_rec->{$k}}) {
|
|---|
| 616 | my $ev = &ghtml::unescape_html($v);
|
|---|
| 617 | push(@escaped_v, $ev);
|
|---|
| 618 | }
|
|---|
| 619 | $doc_rec->{$k} = \@escaped_v;
|
|---|
| 620 | }
|
|---|
| 621 |
|
|---|
| 622 | # Obtain the specified metadata value(s)
|
|---|
| 623 | my $metavalue;
|
|---|
| 624 |
|
|---|
| 625 | if($metapos ne "all") { # get the value at a single metapos
|
|---|
| 626 |
|
|---|
| 627 | $metavalue = $doc_rec->{$metaname}->[$metapos];
|
|---|
| 628 |
|
|---|
| 629 | # protect any double quotes and colons in the metavalue before putting it into JSON
|
|---|
| 630 | $metavalue =~ s/\"/"/g if defined $metavalue;
|
|---|
| 631 | $metavalue =~ s/\:/&58;/g if defined $metavalue;
|
|---|
| 632 |
|
|---|
| 633 | $json_result_str .= "{\"metapos\":\"$metapos\",\"metavalue\":\"$metavalue\"}";
|
|---|
| 634 |
|
|---|
| 635 | } else {
|
|---|
| 636 | my $first_metaval = 1;
|
|---|
| 637 | $metapos = 0;
|
|---|
| 638 | $metavalue = $doc_rec->{$metaname}->[$metapos];
|
|---|
| 639 |
|
|---|
| 640 | while (defined $metavalue) {
|
|---|
| 641 |
|
|---|
| 642 | # protect any double quotes and colons in the metavalue before putting it into JSON
|
|---|
| 643 | $metavalue =~ s/\"/"/g;
|
|---|
| 644 | $metavalue =~ s/\:/&58;/g;
|
|---|
| 645 |
|
|---|
| 646 | if($first_metaval) {
|
|---|
| 647 | $first_metaval = 0;
|
|---|
| 648 | } else {
|
|---|
| 649 | $json_result_str .= ",";
|
|---|
| 650 | }
|
|---|
| 651 |
|
|---|
| 652 | $json_result_str .= "{\"metapos\":\"$metapos\",\"metavalue\":\"$metavalue\"}";
|
|---|
| 653 |
|
|---|
| 654 | $metapos++;
|
|---|
| 655 | $metavalue = $doc_rec->{$metaname}->[$metapos];
|
|---|
| 656 | }
|
|---|
| 657 | }
|
|---|
| 658 |
|
|---|
| 659 | $json_result_str .= "]}"; # close metavals array and metatable record
|
|---|
| 660 | }
|
|---|
| 661 |
|
|---|
| 662 | $json_result_str .= "]}"; # close metatable array and docid record
|
|---|
| 663 | }
|
|---|
| 664 |
|
|---|
| 665 | $json_result_str .= "]"; # close array of docids
|
|---|
| 666 |
|
|---|
| 667 | $gsdl_cgi->generate_ok_message($json_result_str."\n");
|
|---|
| 668 | }
|
|---|
| 669 |
|
|---|
| 670 |
|
|---|
| 671 | sub get_index_metadata
|
|---|
| 672 | {
|
|---|
| 673 | my $self = shift @_;
|
|---|
| 674 |
|
|---|
| 675 | my $username = $self->{'username'};
|
|---|
| 676 | my $collect = $self->{'collect'};
|
|---|
| 677 | my $gsdl_cgi = $self->{'gsdl_cgi'};
|
|---|
| 678 | my $gsdlhome = $self->{'gsdlhome'};
|
|---|
| 679 |
|
|---|
| 680 | # Obtain the collect dir
|
|---|
| 681 | my $site = $self->{'site'};
|
|---|
| 682 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
|
|---|
| 683 | ##my $collect_dir = &util::filename_cat($gsdlhome, "collect");
|
|---|
| 684 |
|
|---|
| 685 | # look up additional args
|
|---|
| 686 | my $docid = $self->{'d'};
|
|---|
| 687 | my $metaname = $self->{'metaname'};
|
|---|
| 688 | my $metapos = $self->{'metapos'};
|
|---|
| 689 | my $infodbtype = $self->{'infodbtype'};
|
|---|
| 690 |
|
|---|
| 691 | # To people who know $collect_tail please add some comments
|
|---|
| 692 | # Obtain path to the database
|
|---|
| 693 | my $collect_tail = $collect;
|
|---|
| 694 | $collect_tail =~ s/^.*[\/|\\]//;
|
|---|
| 695 | my $index_text_directory = &util::filename_cat($collect_dir,$collect,"index","text");
|
|---|
| 696 | my $infodb_file_path = &dbutil::get_infodb_file_path($infodbtype, $collect_tail, $index_text_directory);
|
|---|
| 697 |
|
|---|
| 698 | # Read the docid entry
|
|---|
| 699 | my $doc_rec = &dbutil::read_infodb_entry($infodbtype, $infodb_file_path, $docid);
|
|---|
| 700 |
|
|---|
| 701 | # Basically loop through and unescape_html the values
|
|---|
| 702 | foreach my $k (keys %$doc_rec) {
|
|---|
| 703 | my @escaped_v = ();
|
|---|
| 704 | foreach my $v (@{$doc_rec->{$k}}) {
|
|---|
| 705 | my $ev = &ghtml::unescape_html($v);
|
|---|
| 706 | push(@escaped_v, $ev);
|
|---|
| 707 | }
|
|---|
| 708 | $doc_rec->{$k} = \@escaped_v;
|
|---|
| 709 | }
|
|---|
| 710 |
|
|---|
| 711 | # Obtain the specified metadata value
|
|---|
| 712 | $metapos = 0 if (!defined $metapos || ($metapos =~ m/^\s*$/));
|
|---|
| 713 | my $metavalue = $doc_rec->{$metaname}->[$metapos];
|
|---|
| 714 | $gsdl_cgi->generate_ok_message("$metavalue");
|
|---|
| 715 |
|
|---|
| 716 | }
|
|---|
| 717 |
|
|---|
| 718 |
|
|---|
| 719 | sub get_import_metadata
|
|---|
| 720 | {
|
|---|
| 721 | my $self = shift @_;
|
|---|
| 722 |
|
|---|
| 723 | my $username = $self->{'username'};
|
|---|
| 724 | my $collect = $self->{'collect'};
|
|---|
| 725 | my $gsdl_cgi = $self->{'gsdl_cgi'};
|
|---|
| 726 | my $gsdlhome = $self->{'gsdlhome'};
|
|---|
| 727 |
|
|---|
| 728 | # Obtain the collect dir
|
|---|
| 729 | my $site = $self->{'site'};
|
|---|
| 730 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
|
|---|
| 731 | ##my $collect_dir = &util::filename_cat($gsdlhome, "collect");
|
|---|
| 732 |
|
|---|
| 733 | # look up additional args
|
|---|
| 734 | my $docid = $self->{'d'};
|
|---|
| 735 | my $metaname = $self->{'metaname'};
|
|---|
| 736 | my $metapos = $self->{'metapos'};
|
|---|
| 737 | $metapos = 0 if (!defined $metapos || ($metapos =~ m/^\s*$/)); # gets the first value by default since metapos defaults to 0
|
|---|
| 738 |
|
|---|
| 739 | my $infodbtype = $self->{'infodbtype'};
|
|---|
| 740 | if (!defined $docid)
|
|---|
| 741 | {
|
|---|
| 742 | $gsdl_cgi->generate_error("No docid (d=...) specified.\n");
|
|---|
| 743 | }
|
|---|
| 744 |
|
|---|
| 745 | # Obtain where the metadata.xml is from the archiveinfo-doc.gdb file
|
|---|
| 746 | # If the doc oid is not specified, we assume the metadata.xml is next to the specified "f"
|
|---|
| 747 | my $metadata_xml_file;
|
|---|
| 748 | my $import_filename = undef;
|
|---|
| 749 |
|
|---|
| 750 |
|
|---|
| 751 | my $archive_dir = &util::filename_cat($collect_dir, $collect, "archives");
|
|---|
| 752 | my $arcinfo_doc_filename = &dbutil::get_infodb_file_path($infodbtype, "archiveinf-doc", $archive_dir);
|
|---|
| 753 | my $doc_rec = &dbutil::read_infodb_entry($infodbtype, $arcinfo_doc_filename, $docid);
|
|---|
| 754 |
|
|---|
| 755 | # This now stores the full pathname
|
|---|
| 756 | $import_filename = $doc_rec->{'src-file'}->[0];
|
|---|
| 757 | $import_filename = &util::placeholders_to_abspath($import_filename);
|
|---|
| 758 |
|
|---|
| 759 | # figure out correct metadata.xml file [?]
|
|---|
| 760 | # Assuming the metadata.xml file is next to the source file
|
|---|
| 761 | # Note: This will not work if it is using the inherited metadata from the parent folder
|
|---|
| 762 | my ($import_tailname, $import_dirname) = File::Basename::fileparse($import_filename);
|
|---|
| 763 | my $metadata_xml_filename = &util::filename_cat($import_dirname, "metadata.xml");
|
|---|
| 764 |
|
|---|
| 765 | $gsdl_cgi->generate_ok_message($self->get_metadata_from_metadata_xml($gsdl_cgi, $metadata_xml_filename, $metaname, $metapos, $import_tailname));
|
|---|
| 766 |
|
|---|
| 767 | }
|
|---|
| 768 |
|
|---|
| 769 | sub get_metadata_from_metadata_xml
|
|---|
| 770 | {
|
|---|
| 771 | my $self = shift @_;
|
|---|
| 772 | my ($gsdl_cgi, $metadata_xml_filename, $metaname, $metapos, $src_file) = @_;
|
|---|
| 773 |
|
|---|
| 774 | my @rules =
|
|---|
| 775 | (
|
|---|
| 776 | _default => 'raw',
|
|---|
| 777 | 'Metadata' => \&gfmxml_metadata,
|
|---|
| 778 | 'FileName' => \&mxml_filename
|
|---|
| 779 | );
|
|---|
| 780 |
|
|---|
| 781 | my $parser = XML::Rules->new
|
|---|
| 782 | (
|
|---|
| 783 | rules => \@rules,
|
|---|
| 784 | output_encoding => 'utf8'
|
|---|
| 785 | );
|
|---|
| 786 |
|
|---|
| 787 | my $xml_in = "";
|
|---|
| 788 | if (!open(MIN,"<$metadata_xml_filename"))
|
|---|
| 789 | {
|
|---|
| 790 | $gsdl_cgi->generate_error("Unable to read in $metadata_xml_filename: $!");
|
|---|
| 791 | }
|
|---|
| 792 | else
|
|---|
| 793 | {
|
|---|
| 794 | # Read them in
|
|---|
| 795 | my $line;
|
|---|
| 796 | while (defined ($line=<MIN>)) {
|
|---|
| 797 | $xml_in .= $line;
|
|---|
| 798 | }
|
|---|
| 799 | close(MIN);
|
|---|
| 800 |
|
|---|
| 801 | $parser->parse($xml_in, {metaname => $metaname, metapos => $metapos, src_file => $src_file});
|
|---|
| 802 |
|
|---|
| 803 | if(defined $parser->{'pad'}->{'metavalue'})
|
|---|
| 804 | {
|
|---|
| 805 | return $parser->{'pad'}->{'metavalue'};
|
|---|
| 806 | }
|
|---|
| 807 | else
|
|---|
| 808 | {
|
|---|
| 809 | return "";
|
|---|
| 810 | }
|
|---|
| 811 | }
|
|---|
| 812 | }
|
|---|
| 813 |
|
|---|
| 814 | sub gfmxml_metadata
|
|---|
| 815 | {
|
|---|
| 816 | my ($tagname, $attrHash, $contextArray, $parentDataArray, $parser) = @_;
|
|---|
| 817 |
|
|---|
| 818 | # no subsection support yet in metadata.xml
|
|---|
| 819 |
|
|---|
| 820 | if (($parser->{'parameters'}->{'src_file'} eq $parser->{'parameters'}->{'current_file'}) && $parser->{'parameters'}->{'metaname'} eq $attrHash->{'name'})
|
|---|
| 821 | {
|
|---|
| 822 | if (!defined $parser->{'parameters'}->{'poscount'})
|
|---|
| 823 | {
|
|---|
| 824 | $parser->{'parameters'}->{'poscount'} = 0;
|
|---|
| 825 | }
|
|---|
| 826 | else
|
|---|
| 827 | {
|
|---|
| 828 | $parser->{'parameters'}->{'poscount'}++;
|
|---|
| 829 | }
|
|---|
| 830 |
|
|---|
| 831 | # gets the first value by default, since metapos defaults to 0
|
|---|
| 832 | if (($parser->{'parameters'}->{'poscount'} == $parser->{'parameters'}->{'metapos'}))
|
|---|
| 833 | {
|
|---|
| 834 | if($parser->{'parameters'}->{'metapos'} > 0) {
|
|---|
| 835 | print STDERR "@@@@ WARNING: non-zero metapos.\n";
|
|---|
| 836 | print STDERR "@@@@ Assuming SIMPLE collection and proceeding to retrieve the import meta at position: ".$parser->{'parameters'}->{'metapos'}.".\n";
|
|---|
| 837 | }
|
|---|
| 838 | $parser->{'pad'}->{'metavalue'} = $attrHash->{'_content'};
|
|---|
| 839 | }
|
|---|
| 840 | }
|
|---|
| 841 | }
|
|---|
| 842 |
|
|---|
| 843 | sub get_archives_metadata
|
|---|
| 844 | {
|
|---|
| 845 | my $self = shift @_;
|
|---|
| 846 |
|
|---|
| 847 | my $username = $self->{'username'};
|
|---|
| 848 | my $collect = $self->{'collect'};
|
|---|
| 849 | my $gsdl_cgi = $self->{'gsdl_cgi'};
|
|---|
| 850 | # my $gsdlhome = $self->{'gsdlhome'};
|
|---|
| 851 | my $infodbtype = $self->{'infodbtype'};
|
|---|
| 852 |
|
|---|
| 853 | # Obtain the collect dir
|
|---|
| 854 | my $site = $self->{'site'};
|
|---|
| 855 | my $collect_dir = $gsdl_cgi->get_collection_dir($site);
|
|---|
| 856 |
|
|---|
| 857 | my $archive_dir = &util::filename_cat($collect_dir, $collect, "archives");
|
|---|
| 858 |
|
|---|
| 859 | # look up additional args
|
|---|
| 860 | my ($docid, $docid_secnum) = ($self->{'d'} =~ m/^(.*?)(\..*)?$/);
|
|---|
| 861 | $docid_secnum = "" if (!defined $docid_secnum);
|
|---|
| 862 |
|
|---|
| 863 | my $metaname = $self->{'metaname'};
|
|---|
| 864 | my $metapos = $self->{'metapos'};
|
|---|
| 865 | $metapos = 0 if (!defined $metapos || ($metapos =~ m/^\s*$/));
|
|---|
| 866 |
|
|---|
| 867 | my $arcinfo_doc_filename = &dbutil::get_infodb_file_path($infodbtype, "archiveinf-doc", $archive_dir);
|
|---|
| 868 | my $doc_rec = &dbutil::read_infodb_entry($infodbtype, $arcinfo_doc_filename, $docid);
|
|---|
| 869 |
|
|---|
| 870 | # This now stores the full pathname
|
|---|
| 871 | my $doc_filename = $doc_rec->{'doc-file'}->[0];
|
|---|
| 872 |
|
|---|
| 873 | $gsdl_cgi->generate_ok_message($self->get_metadata_from_archive_xml($gsdl_cgi, &util::filename_cat($archive_dir, $doc_filename), $metaname, $metapos, $docid_secnum));
|
|---|
| 874 |
|
|---|
| 875 | }
|
|---|
| 876 |
|
|---|
| 877 | sub get_metadata_from_archive_xml
|
|---|
| 878 | {
|
|---|
| 879 | my $self = shift @_;
|
|---|
| 880 | my ($gsdl_cgi, $doc_xml_filename, $metaname, $metapos, $secid) = @_;
|
|---|
| 881 |
|
|---|
| 882 | my @start_rules = ('Section' => \&dxml_start_section);
|
|---|
| 883 |
|
|---|
| 884 | my @rules =
|
|---|
| 885 | (
|
|---|
| 886 | _default => 'raw',
|
|---|
| 887 | 'Metadata' => \&gfdxml_metadata
|
|---|
| 888 | );
|
|---|
| 889 |
|
|---|
| 890 | my $parser = XML::Rules->new
|
|---|
| 891 | (
|
|---|
| 892 | start_rules => \@start_rules,
|
|---|
| 893 | rules => \@rules,
|
|---|
| 894 | output_encoding => 'utf8'
|
|---|
| 895 | );
|
|---|
| 896 |
|
|---|
| 897 | my $xml_in = "";
|
|---|
| 898 | if (!open(MIN,"<$doc_xml_filename"))
|
|---|
| 899 | {
|
|---|
| 900 | $gsdl_cgi->generate_error("Unable to read in $doc_xml_filename: $!");
|
|---|
| 901 | }
|
|---|
| 902 | else
|
|---|
| 903 | {
|
|---|
| 904 | # Read them in
|
|---|
| 905 | my $line;
|
|---|
| 906 | while (defined ($line=<MIN>)) {
|
|---|
| 907 | $xml_in .= $line;
|
|---|
| 908 | }
|
|---|
| 909 | close(MIN);
|
|---|
| 910 |
|
|---|
| 911 | $parser->parse($xml_in, {metaname => $metaname, metapos => $metapos, secid => $secid});
|
|---|
| 912 |
|
|---|
| 913 | if(defined $parser->{'pad'}->{'metavalue'})
|
|---|
| 914 | {
|
|---|
| 915 | return $parser->{'pad'}->{'metavalue'};
|
|---|
| 916 | }
|
|---|
| 917 | else
|
|---|
| 918 | {
|
|---|
| 919 | return "";
|
|---|
| 920 | }
|
|---|
| 921 | }
|
|---|
| 922 | }
|
|---|
| 923 |
|
|---|
| 924 | sub gfdxml_metadata
|
|---|
| 925 | {
|
|---|
| 926 | my ($tagname, $attrHash, $contextArray, $parentDataArray, $parser) = @_;
|
|---|
| 927 |
|
|---|
| 928 | if(!($parser->{'parameters'}->{'secid'} eq $parser->{'parameters'}->{'curr_section_num'}))
|
|---|
| 929 | {
|
|---|
| 930 | return;
|
|---|
| 931 | }
|
|---|
| 932 |
|
|---|
| 933 | if ($parser->{'parameters'}->{'metaname'} eq $attrHash->{'name'})
|
|---|
| 934 | {
|
|---|
| 935 | if (!defined $parser->{'parameters'}->{'poscount'})
|
|---|
| 936 | {
|
|---|
| 937 | $parser->{'parameters'}->{'poscount'} = 0;
|
|---|
| 938 | }
|
|---|
| 939 | else
|
|---|
| 940 | {
|
|---|
| 941 | $parser->{'parameters'}->{'poscount'}++;
|
|---|
| 942 | }
|
|---|
| 943 | }
|
|---|
| 944 |
|
|---|
| 945 | if (($parser->{'parameters'}->{'metaname'} eq $attrHash->{'name'}) && ($parser->{'parameters'}->{'poscount'} == $parser->{'parameters'}->{'metapos'}))
|
|---|
| 946 | {
|
|---|
| 947 | $parser->{'pad'}->{'metavalue'} = $attrHash->{'_content'};
|
|---|
| 948 | }
|
|---|
| 949 | }
|
|---|
| 950 |
|
|---|
| 951 | 1;
|
|---|
