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