| 1 | ###########################################################################
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| 2 | #
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| 3 | # OpenDocumentPlug.pm -- The Open Document plugin
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 2001 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 | package OpenDocumentPlug;
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| 26 |
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| 27 | use strict;
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| 28 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 29 |
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| 30 | use XMLPlug;
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| 31 | use XML::XPath;
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| 32 | use XML::XPath::XMLParser;
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| 33 | use Cwd;
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| 34 | use util;
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| 35 | use ghtml;
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| 36 |
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| 37 | sub BEGIN {
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| 38 | @OpenDocumentPlug::ISA = ('XMLPlug');
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| 39 | }
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| 40 |
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| 41 |
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| 42 | #our @filesAssoc = ();
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| 43 | our @filesProcess = ( "content.xml" , "meta.xml" );
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| 44 | #XML plug has this so we need it too
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| 45 | our ($self);
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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' => "{BasPlug.process_exp}",
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| 50 | 'type' => "regexp",
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| 51 | 'deft' => &get_default_process_exp() }
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| 52 | ];
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| 53 | my $options = { 'name' => "OpenDocumentPlug",
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| 54 | 'desc' => "{OpenDocumentPlug.desc}",
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| 55 | 'abstract' => "no",
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| 56 | 'inherits' => "yes" };
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| 57 |
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| 58 | sub get_default_process_exp { return q^(?i)\.o(?:d|t)(?:t|s|p|g)$^; }
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| 59 |
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| 60 | sub new {
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| 61 | my ($class) = shift (@_);
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| 62 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 63 | push(@$pluginlist, $class);
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| 64 |
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| 65 | if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
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| 66 | if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
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| 67 |
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| 68 | my $self = (defined $hashArgOptLists)? new XMLPlug($pluginlist,$inputargs,$hashArgOptLists): new XMLPlug($pluginlist,$inputargs);
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| 69 |
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| 70 | $self->{'section'} = "";
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| 71 | $self->{'office:meta'} = "";
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| 72 |
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| 73 | return bless $self, $class;
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| 74 | }
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| 75 |
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| 76 |
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| 77 | sub xml_doctype {
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| 78 | my $self = shift(@_);
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| 79 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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| 80 | die "The only valid doctype is manifest, $name is not valid" if ($name ne "manifest:manifest");
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| 81 | }
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| 82 |
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| 83 | # Called for every start tag. The $_ variable will contain a copy of the
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| 84 | # tag and the %_ variable will contain the element's attributes.
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| 85 | sub xml_start_tag {
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| 86 | my $self = shift(@_);
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| 87 | my ($expat, $element) = @_;
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| 88 | my %atts = %_;
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| 89 | $self->{'office:meta'} = $element if $self->{'office:meta'} eq "Start";
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| 90 | if($element eq 'office:text') {
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| 91 | $self->{'collectedText'} = "";
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| 92 | }elsif($element eq 'office:meta') {
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| 93 | $self->{'collectedText'} = "";
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| 94 | $self->{'office:meta'} = "Start";
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| 95 | }elsif($element eq 'meta:document-statistic'){
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| 96 | foreach my $att (keys %atts) {
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| 97 | $self->{'doc_obj'}->add_utf8_metadata("",$att,$atts{$att});
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| 98 | }
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| 99 |
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| 100 | }
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| 101 | }
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| 102 |
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| 103 | sub xml_end_tag {
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| 104 | my $self = shift(@_);
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| 105 | my ($expat, $element) = @_;
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| 106 |
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| 107 | if($element eq 'office:text') {
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| 108 | $self->{'doc_obj'}->add_utf8_text("",$self->{'collectedText'});
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| 109 | $self->{'collectedText'} = "";
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| 110 | }elsif($element eq $self->{'office:meta'}) {
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| 111 | if( $self->{'collectedText'} ne "") {
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| 112 | $self->{'doc_obj'}->add_utf8_metadata("",$self->{'office:meta'},$self->{'collectedText'});
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| 113 | $self->{'doc_obj'}->add_utf8_metadata("","Title",$self->{'collectedText'}) if $self->{'office:meta'} =~ m/:title$/;
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| 114 | $self->{'doc_obj'}->add_utf8_metadata("","Language",$self->{'collectedText'}) if $self->{'office:meta'} =~ m/:language$/;
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| 115 | $self->{'doc_obj'}->add_utf8_metadata("","GENERATOR",$self->{'collectedText'}) if $self->{'office:meta'} =~ m/:generator$/;
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| 116 |
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| 117 | }
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| 118 | $self->{'collectedText'} = "";
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| 119 | $self->{'office:meta'} = "Start";
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| 120 | }elsif($element eq 'office:meta'){
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| 121 | $self->{'office:meta'} = "";
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| 122 | }elsif($element eq 'office:body'){
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| 123 | #some documents have text in other places that should probably be indexed if we can't find any doc text
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| 124 | if( $self->{'collectedText'} ne "" && $self->{'doc_obj'}->get_text("") eq "") {
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| 125 | $self->{'doc_obj'}->add_utf8_text("",$self->{'collectedText'});
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| 126 | }
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| 127 | }
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| 128 | }
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| 129 |
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| 130 | sub xml_text {
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| 131 | my $self = shift(@_);
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| 132 | my ($expat) = @_;
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| 133 |
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| 134 | if($_ =~ m/\w/i) {
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| 135 | $self->{'collectedText'} .= "<br/>" if $self->{'collectedText'} ne "";
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| 136 | $self->{'collectedText'} .= "$_";
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| 137 | }
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| 138 | }
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| 139 |
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| 140 | #trap start and end document so we do not get our doc_obj closed too soon
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| 141 | sub xml_start_document {}
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| 142 | sub xml_end_document {}
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| 143 |
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| 144 | sub read {
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| 145 | # $self must be global to work with XML callback routines.
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| 146 | $self = shift (@_);
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| 147 |
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| 148 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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| 149 |
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| 150 | my $filename = $file;
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| 151 | $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
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| 152 |
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| 153 | if ($self->{'block_exp'} ne "" && $filename =~ /$self->{'block_exp'}/) {
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| 154 | $self->{'num_blocked'} ++;
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| 155 | return 0;
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| 156 | }
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| 157 | if ($filename !~ /$self->{'process_exp'}/ || !-f $filename) {
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| 158 | return undef;
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| 159 | }
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| 160 |
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| 161 | $file =~ s/^[\/\\]+//; # $file often begins with / so we'll tidy it up
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| 162 | $self->{'file'} = $file;
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| 163 | $self->{'filename'} = $filename;
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| 164 | $self->{'processor'} = $processor;
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| 165 | $self->{'metadata'} = $metadata;
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| 166 | $self->{'gli'} = $gli;
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| 167 |
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| 168 |
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| 169 | eval{
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| 170 | my ($file_only) = $file =~ /([^\\\/]*)$/;
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| 171 | my $tmpdir = &util::get_tmp_filename ();
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| 172 | &util::mk_all_dir ($tmpdir);
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| 173 |
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| 174 | $self->open_document();
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| 175 |
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| 176 | # save current working directory
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| 177 | my $cwd = getcwd();
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| 178 | chdir ($tmpdir) || die "Unable to change to $tmpdir";
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| 179 | &util::cp ($filename, $tmpdir);
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| 180 |
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| 181 | $self->unzip ("\"$file_only\"");
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| 182 |
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| 183 | foreach my $xmlFile (@OpenDocumentPlug::filesProcess) {
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| 184 | print getcwd();
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| 185 | print $xmlFile;
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| 186 | $self->parse_file($xmlFile);
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| 187 | }
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| 188 |
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| 189 | $self->close_document($filename,$file_only);
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| 190 |
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| 191 | chdir ($cwd) || die "Unable to change back to $cwd";
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| 192 | &util::rm_r ($tmpdir);
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| 193 |
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| 194 | };
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| 195 |
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| 196 | if ($@) {
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| 197 |
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| 198 | # parsefile may either croak somewhere in XML::Parser (e.g. because
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| 199 | # the document is not well formed) or die somewhere in XMLPlug or a
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| 200 | # derived plugin (e.g. because we're attempting to process a
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| 201 | # document whose DOCTYPE is not meant for this plugin). For the
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| 202 | # first case we'll print a warning and continue, for the second
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| 203 | # we'll just continue quietly
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| 204 |
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| 205 | print STDERR "**** Error is: $@\n";
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| 206 |
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| 207 | my ($msg) = $@ =~ /Carp::croak\(\'(.*?)\'\)/;
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| 208 | if (defined $msg) {
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| 209 | my $outhandle = $self->{'outhandle'};
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| 210 | my $plugin_name = ref ($self);
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| 211 | print $outhandle "$plugin_name failed to process $file ($msg)\n";
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| 212 | }
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| 213 |
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| 214 | # reset ourself for the next document
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| 215 | print STDERR "<ProcessingError n='$file'>\n" if ($gli);
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| 216 | return -1; # error during processing
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| 217 | }
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| 218 |
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| 219 | return 1;
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| 220 | }
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| 221 |
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| 222 | sub unzip {
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| 223 | my $self = shift (@_);
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| 224 | my ($file) = @_;
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| 225 |
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| 226 | system ("unzip $file");
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| 227 | &util::rm ($file) if -e $file;
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| 228 | }
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| 229 |
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| 230 | sub close_document() {
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| 231 | my $self = shift(@_);
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| 232 | my ($filename,$file_only) = @_;
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| 233 |
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| 234 | my $doc_obj = $self->{'doc_obj'};
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| 235 |
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| 236 | my $mimetype = $self->get_mimetype();
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| 237 |
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| 238 | $doc_obj->associate_file($filename, $file_only, $mimetype, "");
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| 239 | $doc_obj->associate_file("Thumbnails/thumbnail.png", "thumbnail.png", "image/png", "");
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| 240 | my $doc_ext = $filename;
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| 241 | $doc_ext =~ s/.*\.od(.)/od$1/;
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| 242 |
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| 243 | # We use set instead of add here because we only want one value
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| 244 | $doc_obj->set_utf8_metadata_element("", "FileFormat", "Open Document");
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| 245 |
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| 246 | #setup to doclink thingi
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| 247 | my $doclink = "<a href=\"_httpcollection_/index/assoc/[archivedir]/$file_only\">";
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| 248 | $doc_obj->add_utf8_metadata ("", "srclink", $doclink);
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| 249 | $doc_obj->add_utf8_metadata ("", "srcicon", "<img border=\"0\" align=\"absmiddle\" src=\"_httpcollection_/index/assoc/[archivedir]/thumbnail.png\" alt=\"View the Open document\" title=\"View the Open document\">");
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| 250 | $doc_obj->add_utf8_metadata ("", "/srclink", "</a>");
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| 251 | $doc_obj->add_utf8_metadata ("", "Source", &ghtml::dmsafe($file_only));
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| 252 | $doc_obj->set_utf8_metadata_element("", "FileSize", (-s $filename));
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| 253 |
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| 254 | # add a Title if none has been found yet
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| 255 | $self->title_fallback($doc_obj,"",$file_only);
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| 256 |
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| 257 | # add an OID
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| 258 | $doc_obj->set_OID();
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| 259 |
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| 260 | $doc_obj->add_utf8_metadata("", "Plugin", "$self->{'plugin_type'}");
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| 261 |
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| 262 | # process the document
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| 263 | $self->{'processor'}->process($doc_obj);
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| 264 |
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| 265 | $self->{'num_processed'} ++;
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| 266 | return 1;
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| 267 | }
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| 268 |
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| 269 | sub get_mimetype(){
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| 270 | my $filename = "mimetype";
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| 271 | if (!open (FILEIN,"<$filename")){
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| 272 | print STDERR "Warning: unable to open the $filename\n";
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| 273 | return "Unknown OpenDocument Format";
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| 274 | }
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| 275 | else {
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| 276 | my $text = "";
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| 277 | while (defined (my $line = <FILEIN>)) {
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| 278 | $text .= $line;
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| 279 | }
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| 280 | return $text;
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| 281 | }
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| 282 | }
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| 283 | 1;
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| 284 |
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| 285 |
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| 286 |
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| 287 |
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