| 1 | ###########################################################################
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| 2 | #
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| 3 | # LOMPlugin.pm -- plugin for import the collection from LOM
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| 4 | #
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| 5 | # A component of the Greenstone digital library software
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| 6 | # from the New Zealand Digital Library Project at the
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| 7 | # University of Waikato, New Zealand.
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| 8 | #
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| 9 | # Copyright (C) 2005 New Zealand Digital Library Project
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| 10 | #
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| 11 | # This program is free software; you can redistribute it and/or modify
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| 12 | # it under the terms of the GNU General Public License as published by
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| 13 | # the Free Software Foundation; either version 2 of the License, or
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| 14 | # (at your option) any later version.
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| 15 | #
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| 16 | # This program is distributed in the hope that it will be useful,
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| 17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | # GNU General Public License for more details.
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| 20 | #
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| 21 | # You should have received a copy of the GNU General Public License
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| 22 | # along with this program; if not, write to the Free Software
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| 23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 24 | #
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| 25 | ###########################################################################
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| 26 |
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| 27 | ### Note this plugin currently can't download source documents from outside if you are behind a firewall.
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| 28 | # Unless, you set the http_proxy environment variable to be your proxy server,
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| 29 | # and set proxy_user and proxy_password in .wgetrc file in home directory.
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| 30 | # (does that work on windows??)
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| 31 |
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| 32 | package LOMPlugin;
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| 33 |
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| 34 | use extrametautil;
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| 35 | use ReadTextFile;
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| 36 | use MetadataPass;
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| 37 | use MetadataRead;
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| 38 | use util;
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| 39 | use XMLParser;
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| 40 | use Cwd;
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| 41 |
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| 42 | # methods with identical signatures take precedence in the order given in the ISA list.
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| 43 | sub BEGIN {
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| 44 | @ISA = ('MetadataRead', 'ReadTextFile', 'MetadataPass');
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| 45 | }
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| 46 |
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| 47 | use strict; # every perl program should have this!
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| 48 | no strict 'refs'; # make an exception so we can use variables as filehandles
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| 49 |
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| 50 |
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| 51 | my $arguments =
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| 52 | [ { 'name' => "process_exp",
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| 53 | 'desc' => "{BasePlugin.process_exp}",
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| 54 | 'type' => "string",
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| 55 | 'deft' => &get_default_process_exp(),
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| 56 | 'reqd' => "no" },
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| 57 | { 'name' => "root_tag",
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| 58 | 'desc' => "{LOMPlugin.root_tag}",
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| 59 | 'type' => "regexp",
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| 60 | 'deft' => q/^(?i)lom$/,
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| 61 | 'reqd' => "no" },
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| 62 | { 'name' => "check_timestamp",
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| 63 | 'desc' => "{LOMPlugin.check_timestamp}",
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| 64 | 'type' => "flag" },
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| 65 | { 'name' => "download_srcdocs",
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| 66 | 'desc' => "{LOMPlugin.download_srcdocs}",
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| 67 | 'type' => "regexp",
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| 68 | 'deft' => "",
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| 69 | 'reqd' => "no" }];
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| 70 |
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| 71 | my $options = { 'name' => "LOMPlugin",
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| 72 | 'desc' => "{LOMPlugin.desc}",
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| 73 | 'abstract' => "no",
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| 74 | 'inherits' => "yes",
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| 75 | 'args' => $arguments };
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| 76 |
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| 77 |
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| 78 |
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| 79 | my ($self);
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| 80 | sub new {
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| 81 | my $class = shift (@_);
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| 82 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 83 | push(@$pluginlist, $class);
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| 84 |
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| 85 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 86 | push(@{$hashArgOptLists->{"OptList"}},$options);
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| 87 |
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| 88 | $self = new ReadTextFile($pluginlist, $inputargs, $hashArgOptLists);
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| 89 |
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| 90 | if ($self->{'info_only'}) {
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| 91 | # don't worry about creating the XML parser as all we want is the
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| 92 | # list of plugin options
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| 93 | return bless $self, $class;
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| 94 | }
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| 95 |
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| 96 | #create XML::Parser object for parsing dublin_core.xml files
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| 97 | my $parser = new XML::Parser('Style' => 'Stream',
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| 98 | 'Handlers' => {'Char' => \&Char,
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| 99 | 'Doctype' => \&Doctype
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| 100 | });
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| 101 | $self->{'parser'} = $parser;
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| 102 |
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| 103 | $self->{'extra_blocks'} = {};
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| 104 |
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| 105 | return bless $self, $class;
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| 106 | }
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| 107 |
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| 108 | sub get_default_process_exp {
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| 109 | my $self = shift (@_);
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| 110 |
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| 111 | return q^(?i)\.xml$^;
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| 112 | }
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| 113 |
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| 114 |
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| 115 | sub can_process_this_file {
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| 116 | my $self = shift(@_);
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| 117 | my ($filename) = @_;
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| 118 |
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| 119 | if ($self->SUPER::can_process_this_file($filename) && $self->check_doctype($filename)) {
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| 120 | return 1; # its a file for us
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| 121 | }
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| 122 | return 0;
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| 123 | }
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| 124 |
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| 125 | sub metadata_read {
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| 126 | my $self = shift (@_);
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| 127 | my ($pluginfo, $base_dir, $file, $block_hash,
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| 128 | $extrametakeys, $extrametadata, $extrametafile,
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| 129 | $processor, $gli, $aux) = @_;
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| 130 |
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| 131 | my $outhandle = $self->{'outhandle'};
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| 132 |
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| 133 | # can we process this file??
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| 134 | my ($filename_full_path, $filename_no_path) = &util::get_full_filenames($base_dir, $file);
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| 135 | return undef unless $self->can_process_this_file_for_metadata($filename_full_path);
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| 136 |
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| 137 | $file =~ s/^[\/\\]+//; # $file often begins with / so we'll tidy it up
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| 138 |
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| 139 | print $outhandle "LOMPlugin: extracting metadata from $file\n"
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| 140 | if $self->{'verbosity'} > 1;
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| 141 |
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| 142 | my ($dir,$tail) = $filename_full_path =~ /^(.*?)([^\/\\]*)$/;
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| 143 | $self->{'output_dir'} = $dir;
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| 144 |
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| 145 | eval {
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| 146 | $self->{'parser'}->parsefile($filename_full_path);
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| 147 | };
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| 148 |
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| 149 | if ($@) {
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| 150 | print $outhandle "LOMPlugin: skipping $filename_full_path as not conformant to LOM syntax\n" if ($self->{'verbosity'} > 1);
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| 151 | print $outhandle "\n Perl Error:\n $@\n" if ($self->{'verbosity'}>2);
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| 152 | return 0;
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| 153 | }
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| 154 |
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| 155 | $self->{'output_dir'} = undef;
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| 156 |
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| 157 | my $file_re;
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| 158 | my $lom_srcdoc = $self->{'lom_srcdoc'};
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| 159 |
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| 160 | if (defined $lom_srcdoc) {
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| 161 | my $dirsep = &util::get_re_dirsep();
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| 162 | $lom_srcdoc =~ s/^$base_dir($dirsep)//;
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| 163 | $self->{'extra_blocks'}->{$file}++;
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| 164 | $file_re = $lom_srcdoc;
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| 165 | }
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| 166 | else {
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| 167 | $file_re = $tail;
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| 168 | }
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| 169 |
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| 170 | # Indexing into the extrameta data structures requires the filename's style of slashes to be in URL format
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| 171 | # Then need to convert the filename to a regex, no longer to protect windows directory chars \, but for
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| 172 | # protecting special characters like brackets in the filepath such as "C:\Program Files (x86)\Greenstone".
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| 173 | $file_re = &util::filepath_to_url_format($file_re);
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| 174 | $file_re = &util::filename_to_regex($file_re);
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| 175 | $self->{'lom_srcdoc'} = undef; # reset for next file to be processed
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| 176 |
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| 177 | &extrametautil::addmetakey($extrametakeys, $file_re);
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| 178 | &extrametautil::setmetadata($extrametadata, $file_re, $self->{'saved_metadata'});
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| 179 | if (defined $lom_srcdoc) {
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| 180 | # copied from oaiplugin
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| 181 | if (!defined &extrametautil::getmetafile($extrametafile, $file_re)) {
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| 182 | &extrametautil::setmetafile($extrametafile, $file_re, {});
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| 183 | }
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| 184 | #maps the file to full path
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| 185 | &extrametautil::setmetafile_for_named_file($extrametafile, $file_re, $file, $filename_full_path);
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| 186 | }
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| 187 |
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| 188 | return 1;
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| 189 | }
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| 190 |
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| 191 | sub check_doctype {
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| 192 | $self = shift (@_);
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| 193 |
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| 194 | my ($filename) = @_;
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| 195 |
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| 196 | if (open(XMLIN,"<$filename")) {
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| 197 | my $doctype = $self->{'root_tag'};
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| 198 | ## check whether the doctype has the same name as the root element tag
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| 199 | while (defined (my $line = <XMLIN>)) {
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| 200 | ## find the root element
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| 201 | if ($line =~ /<([\w\d:]+)[\s>]/){
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| 202 | my $root = $1;
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| 203 | if ($root !~ $doctype){
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| 204 | close(XMLIN);
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| 205 | return 0;
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| 206 | }
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| 207 | else {
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| 208 | close(XMLIN);
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| 209 | return 1;
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| 210 | }
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| 211 | }
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| 212 | }
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| 213 | close(XMLIN);
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| 214 | }
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| 215 |
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| 216 | return undef; # haven't found a valid line
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| 217 |
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| 218 | }
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| 219 |
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| 220 | sub read_file {
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| 221 | my $self = shift (@_);
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| 222 | my ($filename, $encoding, $language, $textref) = @_;
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| 223 |
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| 224 | my $metadata_table = $self->{'metadata_table'};
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| 225 |
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| 226 | my $rawtext = $metadata_table->{'rawtext'};
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| 227 |
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| 228 | delete $metadata_table->{'rawtext'};
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| 229 |
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| 230 | $$textref = $rawtext;
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| 231 | }
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| 232 |
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| 233 | sub read {
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| 234 | my $self = shift (@_);
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| 235 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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| 236 |
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| 237 | my $outhandle = $self->{'outhandle'};
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| 238 |
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| 239 | return 0 if (defined $self->{'extra_blocks'}->{$file});
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| 240 |
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| 241 | # can we process this file??
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| 242 | my ($filename_full_path, $filename_no_path) = &util::get_full_filenames($base_dir, $file);
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| 243 | return undef unless $self->can_process_this_file($filename_full_path);
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| 244 |
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| 245 | $self->{'metadata_table'} = $metadata;
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| 246 |
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| 247 | my $lom_language = $metadata->{'lom_language'};
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| 248 |
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| 249 | my $store_input_encoding;
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| 250 | my $store_extract_language;
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| 251 | my $store_default_language;
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| 252 | my $store_default_encoding;
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| 253 |
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| 254 | if (defined $lom_language) {
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| 255 | delete $metadata->{'lom_language'};
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| 256 |
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| 257 | $store_input_encoding = $self->{'input_encoding'};
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| 258 | $store_extract_language = $self->{'extract_language'};
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| 259 | $store_default_language = $self->{'default_language'};
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| 260 | $store_default_encoding = $self->{'default_encoding'};
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| 261 |
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| 262 | $self->{'input_encoding'} = "utf8";
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| 263 | $self->{'extract_language'} = 0;
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| 264 | $self->{'default_language'} = $lom_language;
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| 265 | $self->{'default_encoding'} = "utf8";
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| 266 | }
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| 267 |
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| 268 | my $rv = $self->SUPER::read(@_);
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| 269 |
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| 270 | if (defined $lom_language) {
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| 271 | $self->{'input_encoding'} = $store_input_encoding;
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| 272 | $self->{'extract_language'} = $store_extract_language;
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| 273 | $self->{'default_language'} = $store_default_language;
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| 274 | $self->{'default_encoding'} = $store_default_encoding;
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| 275 | }
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| 276 |
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| 277 | $self->{'metadata_table'} = undef;
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| 278 |
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| 279 | return $rv;
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| 280 | }
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| 281 |
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| 282 | # do plugin specific processing of doc_obj
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| 283 | sub process {
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| 284 | my $self = shift (@_);
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| 285 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
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| 286 | my $outhandle = $self->{'outhandle'};
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| 287 |
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| 288 | my $cursection = $doc_obj->get_top_section();
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| 289 | $doc_obj->add_utf8_text($cursection, $$textref);
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| 290 |
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| 291 | return 1;
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| 292 | }
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| 293 |
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| 294 | sub Doctype {
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| 295 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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| 296 |
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| 297 | my $root_tag = $self->{'root_tag'};
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| 298 |
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| 299 | if ($name !~ /$root_tag/) {
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| 300 | die "Root tag $name does not match regular expression $root_tag";
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| 301 | }
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| 302 | }
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| 303 |
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| 304 | sub StartTag {
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| 305 | my ($expat, $element) = @_;
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| 306 |
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| 307 | my %attr = %_;
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| 308 |
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| 309 | my $raw_tag = "<$element";
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| 310 | map { $raw_tag .= " $_=\"$attr{$_}\""; } keys %attr;
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| 311 | $raw_tag .= ">";
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| 312 |
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| 313 | if ($element =~ m/$self->{'root_tag'}/) {
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| 314 | $self->{'raw_text'} = $raw_tag;
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| 315 |
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| 316 | $self->{'saved_metadata'} = {};
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| 317 | $self->{'metaname_stack'} = [];
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| 318 | $self->{'lom_datatype'} = "";
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| 319 | $self->{'lom_language'} = undef;
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| 320 | $self->{'metadatatext'} = "<table class=\"metadata\" width=\"_pagewidth_\" >\n";
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| 321 | }
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| 322 | else {
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| 323 | my $xml_depth = scalar(@{$self->{'metaname_stack'}});
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| 324 | $self->{'raw_text'} .= "\n";
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| 325 | $self->{'raw_text'} .= " " x $xml_depth;
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| 326 | $self->{'raw_text'} .= $raw_tag;
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| 327 |
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| 328 | my $metaname_stack = $self->{'metaname_stack'};
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| 329 | push(@$metaname_stack,$element);
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| 330 | if (scalar(@$metaname_stack)==1) {
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| 331 | # top level LOM category
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| 332 | my $style = "class=\"metadata\"";
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| 333 | my $open_close
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| 334 | = "<a id=\"${element}opencloselink\" href=\"javascript:hideTBodyArea('$element')\">\n";
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| 335 | $open_close
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| 336 | .= "<img id=\"${element}openclose\" border=\"0\" src=\"_httpopenmdicon_\"></a>\n";
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| 337 |
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| 338 | my $header_line = " <tr $style ><th $style colspan=\"3\">$open_close \u$element</th></tr>\n";
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| 339 | my $md_tbody = "<tbody id=\"$element\">\n";
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| 340 |
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| 341 | $self->{'mdheader'} = $header_line;
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| 342 | $self->{'mdtbody'} = $md_tbody;
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| 343 | $self->{'mdtbody_text'} = "";
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| 344 | }
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| 345 | }
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| 346 | }
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| 347 |
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| 348 | sub EndTag {
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| 349 | my ($expat, $element) = @_;
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| 350 |
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| 351 | my $raw_tag = "</$element>";
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| 352 |
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| 353 | if ($element =~ m/$self->{'root_tag'}/) {
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| 354 | $self->{'raw_text'} .= $raw_tag;
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| 355 |
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| 356 | my $metadatatext = $self->{'metadatatext'};
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| 357 | $metadatatext .= "</table>";
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| 358 |
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| 359 | my $raw_text = $self->{'raw_text'};
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| 360 |
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| 361 | $self->{'saved_metadata'}->{'MetadataTable'} = $metadatatext;
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| 362 | $self->{'metadatatext'} = "";
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| 363 |
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| 364 | $self->{'saved_metadata'}->{'rawtext'} = $raw_text;
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| 365 | $self->{'raw_text'} = "";
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| 366 |
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| 367 | if (defined $self->{'lom_language'}) {
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| 368 | $self->{'saved_metadata'}->{'lom_language'} = $self->{'lom_language'};
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| 369 | $self->{'lom_language'} = undef;
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| 370 | }
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| 371 | }
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| 372 | else {
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| 373 | my $metaname_stack = $self->{'metaname_stack'};
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| 374 |
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| 375 | if (scalar(@$metaname_stack)==1) {
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| 376 | my $header_line = $self->{'mdheader'};
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| 377 | my $tbody_start = $self->{'mdtbody'};
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| 378 | my $tbody_text = $self->{'mdtbody_text'};
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| 379 | if ($tbody_text !~ m/^\s*$/s) {
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| 380 | my $tbody_end = "</tbody>\n";
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| 381 | my $table_chunk
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| 382 | = $header_line.$tbody_start.$tbody_text.$tbody_end;
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| 383 |
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| 384 | $self->{'metadatatext'} .= $table_chunk;
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| 385 | }
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| 386 | $self->{'mdtheader'} = "";
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| 387 | $self->{'mdtbody'} = "";
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| 388 | $self->{'mdtbody_text'} = "";
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| 389 | }
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| 390 |
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| 391 | pop(@$metaname_stack);
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| 392 |
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| 393 | my $xml_depth = scalar(@{$self->{'metaname_stack'}});
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| 394 | $self->{'raw_text'} .= "\n";
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| 395 | $self->{'raw_text'} .= " " x $xml_depth;
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| 396 | $self->{'raw_text'} .= $raw_tag;
|
|---|
| 397 | }
|
|---|
| 398 | }
|
|---|
| 399 |
|
|---|
| 400 | sub process_datatype_info
|
|---|
| 401 | {
|
|---|
| 402 | my $self = shift(@_);
|
|---|
| 403 | my ($metaname_stack,$md_content) = @_;
|
|---|
| 404 |
|
|---|
| 405 | my @without_dt_stack = @$metaname_stack; # without datatype stack
|
|---|
| 406 |
|
|---|
| 407 | my $innermost_element = $without_dt_stack[$#without_dt_stack];
|
|---|
| 408 |
|
|---|
| 409 | # Loose last item if encoding datatype information
|
|---|
| 410 | if ($innermost_element =~ m/^(lang)?string$/) {
|
|---|
| 411 | $self->{'lom_datatype'} = $innermost_element;
|
|---|
| 412 |
|
|---|
| 413 | pop @without_dt_stack;
|
|---|
| 414 | $innermost_element = $without_dt_stack[$#without_dt_stack];
|
|---|
| 415 | }
|
|---|
| 416 | elsif ($innermost_element =~ m/^date(Time)?$/i) {
|
|---|
| 417 | if ($innermost_element =~ m/^date$/i) {
|
|---|
| 418 | $self->{'lom_datatype'} = "dateTime";
|
|---|
| 419 | }
|
|---|
| 420 | else {
|
|---|
| 421 | $self->{'lom_datatype'} = $innermost_element;
|
|---|
| 422 |
|
|---|
| 423 | pop @without_dt_stack;
|
|---|
| 424 | $innermost_element = $without_dt_stack[$#without_dt_stack];
|
|---|
| 425 | }
|
|---|
| 426 |
|
|---|
| 427 | if ($md_content =~ m/^(\d{1,2})\s*(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\w*\s*(\d{4})/i) {
|
|---|
| 428 | my ($day,$mon,$year) = ($1,$2,$3);
|
|---|
| 429 |
|
|---|
| 430 | my %month_lookup = ( 'jan' => 1, 'feb' => 2, 'mar' => 3,
|
|---|
| 431 | 'apr' => 4, 'may' => 5, 'jun' => 6,
|
|---|
| 432 | 'jul' => 7, 'aug' => 8, 'sep' => 9,
|
|---|
| 433 | 'oct' => 10, 'nov' => 11, 'dec' => 12 );
|
|---|
| 434 |
|
|---|
| 435 | my $mon_num = $month_lookup{lc($mon)};
|
|---|
| 436 |
|
|---|
| 437 | $md_content = sprintf("%d%02d%02d",$year,$mon_num,$day);
|
|---|
| 438 | }
|
|---|
| 439 |
|
|---|
| 440 | $md_content =~ s/\-//g;
|
|---|
| 441 | }
|
|---|
| 442 |
|
|---|
| 443 | if ($innermost_element eq "source") {
|
|---|
| 444 | $self->{'lom_source'} = $md_content;
|
|---|
| 445 | }
|
|---|
| 446 | elsif ($innermost_element eq "value") {
|
|---|
| 447 | $self->{'lom_value'} = $md_content;
|
|---|
| 448 | }
|
|---|
| 449 |
|
|---|
| 450 | return (\@without_dt_stack,$innermost_element,$md_content);
|
|---|
| 451 | }
|
|---|
| 452 |
|
|---|
| 453 | sub reset_datatype_info
|
|---|
| 454 | {
|
|---|
| 455 | my $self = shift(@_);
|
|---|
| 456 |
|
|---|
| 457 | $self->{'lom_datatype'} = "";
|
|---|
| 458 | }
|
|---|
| 459 |
|
|---|
| 460 |
|
|---|
| 461 | sub pretty_print_text
|
|---|
| 462 | {
|
|---|
| 463 | my $self = shift(@_);
|
|---|
| 464 |
|
|---|
| 465 | my ($pretty_print_text) = @_;
|
|---|
| 466 |
|
|---|
| 467 | ## $metavalue_utf8 = &util::hyperlink_text($metavalue_utf8);
|
|---|
| 468 | $pretty_print_text = &util::hyperlink_text($pretty_print_text);
|
|---|
| 469 |
|
|---|
| 470 | #### $pretty_print_text =~ s/(BEGIN:vCard.*END:vCard)/<pre>$1<\/pre>/sg;
|
|---|
| 471 |
|
|---|
| 472 | if ($self->{'lom_datatype'} eq "dateTime") {
|
|---|
| 473 | if ($pretty_print_text =~ m/^(\d{4})(\d{2})(\d{2})$/) {
|
|---|
| 474 | $pretty_print_text = "$1-$2-$3";
|
|---|
| 475 | }
|
|---|
| 476 | }
|
|---|
| 477 |
|
|---|
| 478 | return $pretty_print_text;
|
|---|
| 479 | }
|
|---|
| 480 |
|
|---|
| 481 | sub pretty_print_table_tr
|
|---|
| 482 | {
|
|---|
| 483 | my $self = shift (@_);
|
|---|
| 484 | my ($without_dt_stack) = @_;
|
|---|
| 485 |
|
|---|
| 486 | my $style = "class=\"metadata\"";
|
|---|
| 487 |
|
|---|
| 488 | my $innermost_element = $without_dt_stack->[scalar(@$without_dt_stack)-1];
|
|---|
| 489 | my $outermost_element = $without_dt_stack->[0];
|
|---|
| 490 |
|
|---|
| 491 | # Loose top level stack item (already named in pretty print table)
|
|---|
| 492 | my @pretty_print_stack = @$without_dt_stack;
|
|---|
| 493 | shift @pretty_print_stack;
|
|---|
| 494 |
|
|---|
| 495 | if ($innermost_element eq "source") {
|
|---|
| 496 | return if (!defined $self->{'lom_value'});
|
|---|
| 497 | }
|
|---|
| 498 |
|
|---|
| 499 | if ($innermost_element eq "value") {
|
|---|
| 500 | return if (!defined $self->{'lom_source'});
|
|---|
| 501 | }
|
|---|
| 502 |
|
|---|
| 503 | my $pretty_print_text = "";
|
|---|
| 504 |
|
|---|
| 505 | if (($innermost_element eq "value") || ($innermost_element eq "source")) {
|
|---|
| 506 | my $source = $self->{'lom_source'};
|
|---|
| 507 | my $value = $self->pretty_print_text($self->{'lom_value'});
|
|---|
| 508 |
|
|---|
| 509 | $self->{'lom_source'} = undef;
|
|---|
| 510 | $self->{'lom_value'} = undef;
|
|---|
| 511 |
|
|---|
| 512 | pop @pretty_print_stack;
|
|---|
| 513 |
|
|---|
| 514 | $pretty_print_text = "<td $style>$source</td><td $style>$value</td>";
|
|---|
| 515 | }
|
|---|
| 516 | else {
|
|---|
| 517 | $pretty_print_text = $self->pretty_print_text($_);
|
|---|
| 518 | $pretty_print_text = "<td $style colspan=2>$pretty_print_text</td>";
|
|---|
| 519 | }
|
|---|
| 520 | my $pretty_print_fmn = join(' : ',map { "\u$_"; } @pretty_print_stack);
|
|---|
| 521 |
|
|---|
| 522 |
|
|---|
| 523 | # my $tr_attr = "id=\"$outermost_element\" style=\"display:block;\"";
|
|---|
| 524 | my $tr_attr = "$style id=\"$outermost_element\"";
|
|---|
| 525 |
|
|---|
| 526 | my $mdtext_line = " <tr $tr_attr><td $style><nobr>$pretty_print_fmn</nobr></td>$pretty_print_text</tr>\n";
|
|---|
| 527 | $self->{'mdtbody_text'} .= $mdtext_line;
|
|---|
| 528 | }
|
|---|
| 529 |
|
|---|
| 530 |
|
|---|
| 531 | sub check_for_language
|
|---|
| 532 | {
|
|---|
| 533 | my $self = shift(@_);
|
|---|
| 534 | my ($innermost_element,$md_content) = @_;
|
|---|
| 535 |
|
|---|
| 536 | # Look for 'language' tag
|
|---|
| 537 | if ($innermost_element eq "language") {
|
|---|
| 538 | my $lom_lang = $self->{'lom_language'};
|
|---|
| 539 |
|
|---|
| 540 | if (defined $lom_lang) {
|
|---|
| 541 | my $new_lom_lang = $md_content;
|
|---|
| 542 | $new_lom_lang =~ s/-.*//; # remove endings like -US or -GB
|
|---|
| 543 |
|
|---|
| 544 | if ($lom_lang ne $new_lom_lang) {
|
|---|
| 545 | my $outhandle = $self->{'outhandle'};
|
|---|
| 546 |
|
|---|
| 547 | print $outhandle "Warning: Conflicting general language in record\n";
|
|---|
| 548 | print $outhandle " $new_lom_lang (previous value for language = $lom_lang)\n";
|
|---|
| 549 | }
|
|---|
| 550 | # otherwise, existing value OK => do nothing
|
|---|
| 551 | }
|
|---|
| 552 | else {
|
|---|
| 553 | $lom_lang = $md_content;
|
|---|
| 554 | $lom_lang =~ s/-.*//; # remove endings like -US or -GB
|
|---|
| 555 |
|
|---|
| 556 | $self->{'lom_language'} = $lom_lang;
|
|---|
| 557 | }
|
|---|
| 558 | }
|
|---|
| 559 | }
|
|---|
| 560 |
|
|---|
| 561 | sub found_specific_identifier
|
|---|
| 562 | {
|
|---|
| 563 | my $self = shift(@_);
|
|---|
| 564 | my ($specific_id,$full_mname,$md_content) = @_;
|
|---|
| 565 |
|
|---|
| 566 | my $found_id = 0;
|
|---|
| 567 | if ($full_mname eq $specific_id) {
|
|---|
| 568 | if ($md_content =~ m/^(http|ftp):/) {
|
|---|
| 569 | $found_id = 1;
|
|---|
| 570 | }
|
|---|
| 571 | }
|
|---|
| 572 |
|
|---|
| 573 | return $found_id;
|
|---|
| 574 | }
|
|---|
| 575 |
|
|---|
| 576 | sub download_srcdoc
|
|---|
| 577 | {
|
|---|
| 578 | my $self = shift(@_);
|
|---|
| 579 | my ($doc_url) = @_;
|
|---|
| 580 |
|
|---|
| 581 | my $outhandle = $self->{'outhandle'};
|
|---|
| 582 | my $output_dir = $self->{'output_dir'};
|
|---|
| 583 |
|
|---|
| 584 | $output_dir = &util::filename_cat($output_dir,"_gsdldown.all");
|
|---|
| 585 |
|
|---|
| 586 | if (! -d $output_dir) {
|
|---|
| 587 | mkdir $output_dir;
|
|---|
| 588 | }
|
|---|
| 589 |
|
|---|
| 590 | my $re_dirsep = &util::get_re_dirsep();
|
|---|
| 591 | my $os_dirsep = &util::get_dirsep();
|
|---|
| 592 |
|
|---|
| 593 | my $file_url = $doc_url;
|
|---|
| 594 | $file_url =~ s/$re_dirsep/$os_dirsep/g;
|
|---|
| 595 | $file_url =~ s/^(http|ftp):\/\///;
|
|---|
| 596 | $file_url .= "index.html" if ($file_url =~ m/\/$/);
|
|---|
| 597 |
|
|---|
| 598 | my $full_file_url = &util::filename_cat($output_dir,$file_url);
|
|---|
| 599 | # the path to srcdoc will be used later in extrametadata to associate
|
|---|
| 600 | # the lom metadata with the document. Needs to be relative to current
|
|---|
| 601 | # directory.
|
|---|
| 602 | my $srcdoc_path = &util::filename_cat("_gsdldown.all", $file_url);
|
|---|
| 603 | my $check_timestamp = $self->{'check_timestamp'};
|
|---|
| 604 | my $status;
|
|---|
| 605 |
|
|---|
| 606 | if (($check_timestamp) || (!$check_timestamp && !-e $full_file_url)) {
|
|---|
| 607 | if (!-e $full_file_url) {
|
|---|
| 608 | print $outhandle "Mirroring $doc_url\n";
|
|---|
| 609 | }
|
|---|
| 610 | else {
|
|---|
| 611 | print $outhandle "Checking to see if update needed for $doc_url\n";
|
|---|
| 612 | }
|
|---|
| 613 |
|
|---|
| 614 | # on linux, if we pass an absolute path as -P arg to wget, then it
|
|---|
| 615 | # stuffs up the
|
|---|
| 616 | # URL rewriting in the file. Need a relative path or none, so now
|
|---|
| 617 | # we change working directory first.
|
|---|
| 618 | my $changed_dir = 0;
|
|---|
| 619 | my $current_dir = cwd();
|
|---|
| 620 | my $wget_cmd = "";
|
|---|
| 621 | if ($ENV{'GSDLOS'} ne "windows") {
|
|---|
| 622 | $changed_dir = 1;
|
|---|
| 623 |
|
|---|
| 624 | chdir "$output_dir";
|
|---|
| 625 | $wget_cmd = "wget -nv --timestamping -k -p \"$doc_url\"";
|
|---|
| 626 | } else {
|
|---|
| 627 | $wget_cmd = "wget -nv -P \"$output_dir\" --timestamping -k -p \"$doc_url\"";
|
|---|
| 628 | }
|
|---|
| 629 | ##print STDERR "**** wget = $wget_cmd\n";
|
|---|
| 630 |
|
|---|
| 631 |
|
|---|
| 632 | $status = system($wget_cmd);
|
|---|
| 633 | if ($changed_dir) {
|
|---|
| 634 | chdir $current_dir;
|
|---|
| 635 | }
|
|---|
| 636 | if ($status==0) {
|
|---|
| 637 | $self->{'lom_srcdoc'} = $srcdoc_path;
|
|---|
| 638 | }
|
|---|
| 639 | else {
|
|---|
| 640 | $self->{'lom_srcdoc'} = undef;
|
|---|
| 641 | print $outhandle "Error: failed to execute $wget_cmd\n";
|
|---|
| 642 | }
|
|---|
| 643 | }
|
|---|
| 644 | else {
|
|---|
| 645 | # not time-stamping and file already exists
|
|---|
| 646 | $status=0;
|
|---|
| 647 | $self->{'lom_srcdoc'} = $srcdoc_path;
|
|---|
| 648 | }
|
|---|
| 649 |
|
|---|
| 650 | return $status==0;
|
|---|
| 651 |
|
|---|
| 652 | }
|
|---|
| 653 |
|
|---|
| 654 |
|
|---|
| 655 | sub check_for_identifier
|
|---|
| 656 | {
|
|---|
| 657 | my $self = shift(@_);
|
|---|
| 658 | my ($full_mname,$md_content) = @_;
|
|---|
| 659 |
|
|---|
| 660 | my $success = 0;
|
|---|
| 661 |
|
|---|
| 662 | my $download_re = $self->{'download_srcdocs'};
|
|---|
| 663 | if (($download_re ne "") && $md_content =~ m/$download_re/) {
|
|---|
| 664 |
|
|---|
| 665 | if ($self->found_specific_identifier("general^identifier^entry",$full_mname,$md_content)) {
|
|---|
| 666 | $success = $self->download_srcdoc($md_content);
|
|---|
| 667 | }
|
|---|
| 668 |
|
|---|
| 669 | if (!$success) {
|
|---|
| 670 | if ($self->found_specific_identifier("technical^location",$full_mname,$md_content)) {
|
|---|
| 671 | $success = $self->download_srcdoc($md_content);
|
|---|
| 672 | }
|
|---|
| 673 | }
|
|---|
| 674 | }
|
|---|
| 675 |
|
|---|
| 676 | return $success;
|
|---|
| 677 | }
|
|---|
| 678 |
|
|---|
| 679 |
|
|---|
| 680 | sub Text {
|
|---|
| 681 | if ($_ !~ m/^\s*$/) {
|
|---|
| 682 | #
|
|---|
| 683 | # Work out indentations and line wraps for raw XML
|
|---|
| 684 | #
|
|---|
| 685 | my $xml_depth = scalar(@{$self->{'metaname_stack'}})+1;
|
|---|
| 686 | my $indent = " " x $xml_depth;
|
|---|
| 687 |
|
|---|
| 688 | my $formatted_text = "\n".$_;
|
|---|
| 689 |
|
|---|
| 690 | # break into lines < 80 chars on space
|
|---|
| 691 | $formatted_text =~ s/(.{50,80})\s+/$1\n/mg;
|
|---|
| 692 | $formatted_text =~ s/^/$indent/mg;
|
|---|
| 693 | ## $formatted_text =~ s/\s+$//s;
|
|---|
| 694 |
|
|---|
| 695 | $self->{'raw_text'} .= $formatted_text;
|
|---|
| 696 | }
|
|---|
| 697 |
|
|---|
| 698 | my $metaname_stack = $self->{'metaname_stack'};
|
|---|
| 699 | if (($_ !~ /^\s*$/) && (scalar(@$metaname_stack)>0)) {
|
|---|
| 700 |
|
|---|
| 701 | my ($without_dt_stack,$innermost_element,$md_content)
|
|---|
| 702 | = $self->process_datatype_info($metaname_stack,$_);
|
|---|
| 703 |
|
|---|
| 704 | $self->pretty_print_table_tr($without_dt_stack);
|
|---|
| 705 |
|
|---|
| 706 | my $full_mname = join('^',@{$without_dt_stack});
|
|---|
| 707 | $self->set_filere_metadata(lc($full_mname),$md_content);
|
|---|
| 708 |
|
|---|
| 709 | $self->check_for_language($innermost_element,$md_content);
|
|---|
| 710 | $self->check_for_identifier($full_mname,$md_content); # source doc
|
|---|
| 711 |
|
|---|
| 712 | $self->reset_datatype_info();
|
|---|
| 713 | }
|
|---|
| 714 | }
|
|---|
| 715 |
|
|---|
| 716 | # This Char function overrides the one in XML::Parser::Stream to overcome a
|
|---|
| 717 | # problem where $expat->{Text} is treated as the return value, slowing
|
|---|
| 718 | # things down significantly in some cases.
|
|---|
| 719 | sub Char {
|
|---|
| 720 | $_[0]->{'Text'} .= $_[1];
|
|---|
| 721 | return undef;
|
|---|
| 722 | }
|
|---|
| 723 |
|
|---|
| 724 | 1;
|
|---|
