| 1 | ###########################################################################
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| 2 | #
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| 3 | # NPPlug.pm -- Plugin for the niupepa collection
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| 4 | # A component of the Greenstone digital library software
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| 5 | # from the New Zealand Digital Library Project at the
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| 6 | # University of Waikato, New Zealand.
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| 7 | #
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| 8 | # Copyright (C) 1999 New Zealand Digital Library Project
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| 9 | #
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| 10 | # This program is free software; you can redistribute it and/or modify
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| 11 | # it under the terms of the GNU General Public License as published by
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| 12 | # the Free Software Foundation; either version 2 of the License, or
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| 13 | # (at your option) any later version.
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| 14 | #
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| 15 | # This program is distributed in the hope that it will be useful,
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| 16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | # GNU General Public License for more details.
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| 19 | #
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| 20 | # You should have received a copy of the GNU General Public License
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| 21 | # along with this program; if not, write to the Free Software
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| 22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | #
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| 24 | ###########################################################################
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| 25 |
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| 26 | # The niupepa collection has a file structure as follows:
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| 27 | # Each niupepa series has its own directory containing some/all
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| 28 | # of the following:
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| 29 |
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| 30 | # meta.txt - file contains metadata to be associated with all documents
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| 31 | # in series.
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| 32 | # *.issue - each issue should have a .issue file which may or may not
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| 33 | # contain metadata to associate with the issue. also contains the list
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| 34 | # of filenames that make up the issue (i.e. one for each page). meta.txt
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| 35 | # is read before *.issue so metadata in .issue files will override that in
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| 36 | # meta.txt
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| 37 | # *.commentary - the commentary of the niupepa series (1 per series)
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| 38 | # text/*.txt/htm - text/html files of issue pages (1 per page) -
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| 39 | # text files are expected to be either .htm or .txt (lower case).
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| 40 | # images/*.gif - image files of issue pages (1 per page)
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| 41 | # abstracts/*.abstract - html files of issue abstracts (1 per issue)
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| 42 |
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| 43 |
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| 44 | package NPPlug;
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| 45 |
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| 46 | use BasPlug;
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| 47 | use util;
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| 48 | use strict;
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| 49 | use unicode;
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| 50 |
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| 51 | sub BEGIN {
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| 52 | @NPPlug::ISA = ('BasPlug');
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| 53 | }
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| 54 |
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| 55 |
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| 56 | my $arguments =
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| 57 | [
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| 58 | { 'name' => "create_log",
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| 59 | 'desc' => "To create a log file",
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| 60 | 'type' => "flag" },
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| 61 | { 'name' => "logfile",
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| 62 | 'desc' => "The log file path",
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| 63 | 'type' => "string",
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| 64 | 'deft' => "./log.txt"}
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| 65 | ];
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| 66 |
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| 67 | my $options = { 'name' => "NPPlug",
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| 68 | 'desc' => "{NPPlug.desc}",
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| 69 | 'abstract' => "no",
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| 70 | 'inherits' => "yes",
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| 71 | 'args' => $arguments };
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| 72 |
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| 73 | sub new {
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| 74 | my ($class) = shift(@_);
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| 75 |
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| 76 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 77 | push(@$pluginlist, $class);
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| 78 |
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| 79 | if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
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| 80 | if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
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| 81 |
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| 82 | my $self = new BasPlug($pluginlist, $inputargs, $hashArgOptLists);
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| 83 |
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| 84 | $self->{'commentaries'} = {};
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| 85 | $self->{'num_issues'} = 0;
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| 86 | $self->{'num_text_pages'} = 0;
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| 87 | $self->{'num_image_pages'} = 0;
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| 88 | $self->{'num_abstracts'} = 0;
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| 89 | return bless $self, $class;
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| 90 | }
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| 91 |
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| 92 |
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| 93 | sub get_default_process_exp {
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| 94 | my $self = shift (@_);
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| 95 |
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| 96 | # the last option is an attempt to encode the concept of an html query ...
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| 97 | return q^(?i)(\.issue)$^;
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| 98 | }
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| 99 |
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| 100 |
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| 101 | sub is_recursive {
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| 102 | my $self = shift (@_);
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| 103 |
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| 104 | return 0; # this is not a recursive plugin
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| 105 | }
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| 106 |
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| 107 | sub begin {
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| 108 | my $self = shift (@_);
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| 109 | my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
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| 110 |
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| 111 | # open up logfile
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| 112 | # note that we append to logfile as building will otherwise
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| 113 | # overwrite a file generated at import time
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| 114 | if ($self->{'create_log'}) {
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| 115 | open (LOGFILE, ">>$self->{'logfile'}") || die
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| 116 | "NPPlug.pm: Couldn't open log file $self->{'logfile'}\n";
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| 117 |
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| 118 | my @time = localtime (time);
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| 119 |
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| 120 | print LOGFILE "------------------------------------------------------------\n";
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| 121 | print LOGFILE "Log start $time[3]/$time[4]/" . (1900 + $time[5]) . "\n";
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| 122 | print LOGFILE "------------------------------------------------------------\n";
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| 123 | }
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| 124 | }
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| 125 |
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| 126 | sub end {
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| 127 | my $self = shift (@_);
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| 128 |
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| 129 | if ($self->{'create_log'}) {
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| 130 | my $numseries = 0;
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| 131 | my $numcommentaries = 0;
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| 132 |
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| 133 | # record missing commentaries in logfile
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| 134 | foreach my $key (keys %{$self->{'commentaries'}}) {
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| 135 | $numseries ++;
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| 136 | if (!$self->{'commentaries'}->{$key}) {
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| 137 | print LOGFILE "Commentary missing for series $key\n";
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| 138 | } else {
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| 139 | $numcommentaries ++;
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| 140 | }
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| 141 | }
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| 142 |
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| 143 | print LOGFILE "\n\nStatistics:\n";
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| 144 | print LOGFILE "series: $numseries\n";
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| 145 | print LOGFILE "commentaries: $numcommentaries\n";
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| 146 | print LOGFILE "issues: $self->{'num_issues'}\n";
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| 147 | print LOGFILE "abstracts: $self->{'num_abstracts'}\n";
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| 148 | print LOGFILE "text pages: $self->{'num_text_pages'}\n";
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| 149 | print LOGFILE "image pages: $self->{'num_image_pages'}\n";
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| 150 |
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| 151 | # close logfile
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| 152 | close LOGFILE;
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| 153 | }
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| 154 | }
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| 155 |
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| 156 | # return number of files processed, undef if can't process
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| 157 | # Note that $base_dir might be "" and that $file might
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| 158 | # include directories
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| 159 | sub read {
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| 160 | my $self = shift (@_);
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| 161 | my ($pluginfo, $base_dir, $file, $metadata, $processor) = @_;
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| 162 |
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| 163 | my $filename = &util::filename_cat($base_dir, $file);
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| 164 |
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| 165 | # we don't want RecPlug to go recursing into the text, images or
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| 166 | # abstracts directories
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| 167 | return 0 if (-d $filename && $filename =~ /(abstracts|images|text)/);
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| 168 |
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| 169 | return 0 if $filename =~ /meta\.txt$/i;
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| 170 |
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| 171 | return undef unless ($filename =~ /\.(issue|commentary|gif)$/i && (-e $filename));
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| 172 |
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| 173 | $self->{'verbosity'} = $processor->{'verbosity'};
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| 174 | print STDERR "NPPlug: processing $filename\n" if $self->{'verbosity'};
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| 175 |
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| 176 | my ($dir);
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| 177 | ($dir, $file) = $filename =~ /^(.*?)([^\/\\]*)$/;
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| 178 | my ($issuekey) = $file =~ /^([^\.\_]*)/;
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| 179 |
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| 180 | if ($filename =~ /\.commentary$/i) {
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| 181 | # commentary
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| 182 | $self->{'num_processed'}
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| 183 | += $self->process_commentary ($filename, $issuekey, $dir, $file, $processor);
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| 184 | return 1;
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| 185 | }
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| 186 |
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| 187 | if ($filename =~ /(.*)on\.gif$/i) {
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| 188 | my $root = $1;
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| 189 | # create surrogate document to store cover image (on and off) for
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| 190 | # newspaper
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| 191 |
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| 192 | $issuekey =~ s/on$//;
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| 193 |
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| 194 | my $doc_obj = new doc ($dir, "indexed_doc");
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| 195 | my $cover = &util::filename_cat ($dir, $issuekey);
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| 196 |
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| 197 | $self->associate_cover_images ($doc_obj, $cover, "" );
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| 198 | $doc_obj->set_OID ($issuekey);
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| 199 | $processor->process ($doc_obj);
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| 200 |
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| 201 | return 0;
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| 202 | }
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| 203 | if ($filename =~ /(.*)of\.gif$/i) {
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| 204 | # block it
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| 205 | return 0;
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| 206 | }
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| 207 | if ($filename =~ /\.gif$/i) {
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| 208 | # Let some other plugin have a go
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| 209 | return undef;
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| 210 | }
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| 211 |
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| 212 | my $numprocessed = 0;
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| 213 | $self->{'commentaries'}->{$issuekey} = 0
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| 214 | unless defined $self->{'commentaries'}->{$issuekey};
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| 215 |
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| 216 | my ($abstractfile) = $file =~ /^([^\.]*)\.issue/i;
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| 217 | my $abstractOID = $abstractfile . "abstract";
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| 218 | $abstractfile .= ".abstract";
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| 219 | my $afile = &util::filename_cat($dir, "abstracts", $abstractfile);
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| 220 | my $hasabstract = 0;
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| 221 | if (-e $afile) {$hasabstract = 1;}
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| 222 | else {$abstractOID = undef;}
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| 223 |
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| 224 | # process the .issue file
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| 225 | my %meta = ();
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| 226 | $numprocessed += $self->process_issue ($filename, $issuekey, $dir, $file,
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| 227 | $abstractOID, $processor, \%meta);
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| 228 |
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| 229 | # process abstract of this issue
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| 230 | if ($hasabstract) {
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| 231 | $numprocessed += $self->process_abstract ($afile, $issuekey, $dir,
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| 232 | $abstractfile, $processor, \%meta);
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| 233 | }
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| 234 |
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| 235 | $self->{'num_processed'} += $numprocessed;
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| 236 |
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| 237 |
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| 238 |
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| 239 | return 1;
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| 240 | }
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| 241 |
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| 242 | sub process_issue {
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| 243 | my $self = shift (@_);
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| 244 | my ($filename, $issuekey, $dir, $file, $abstract, $processor, $meta) = @_;
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| 245 |
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| 246 | $self->{'num_issues'} ++;
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| 247 | my $doc_obj = new doc ($file, "indexed_doc");
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| 248 | my $topsection = $doc_obj->get_top_section();
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| 249 | $self->associate_cover_images ($doc_obj, $dir, $issuekey);
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| 250 | $doc_obj->set_utf8_metadata_element ($topsection, 'Title', $self->get_title_string($file));
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| 251 | $doc_obj->set_utf8_metadata_element ($topsection, 'abstract', $abstract) if defined $abstract;
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| 252 | $self->set_main_metadata ($doc_obj, $dir);
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| 253 |
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| 254 | my $com_filename = &util::filename_cat($dir,"$issuekey.commentary");
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| 255 | if (-e $com_filename) {
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| 256 | $doc_obj->set_utf8_metadata_element ($topsection, "hascom", "1");
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| 257 | }
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| 258 |
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| 259 | # process issue's pdf if one exists
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| 260 | my ($pdffile) = $file =~ /^([^\.]*)\.issue/i;
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| 261 | $pdffile .= ".pdf";
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| 262 | $pdffile = &util::filename_cat($dir, "pdf", $pdffile);
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| 263 | if (-e $pdffile) {
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| 264 | $doc_obj->set_utf8_metadata_element ($topsection, "haspdf", "1");
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| 265 | $doc_obj->associate_file($pdffile, "paper.pdf");
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| 266 | } else {
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| 267 | $doc_obj->set_utf8_metadata_element ($topsection, "haspdf", "0");
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| 268 | }
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| 269 |
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| 270 | open (ISSUEFILE, $filename) || die "couldn't open $filename\n";
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| 271 | my $line = "";
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| 272 | while (defined ($line = <ISSUEFILE>)) {
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| 273 | next unless $line =~ /\w/;
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| 274 | chomp $line;
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| 275 | if ($line =~ /^<([^>]*)>(.*?)\s*$/) {
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| 276 | $doc_obj->set_utf8_metadata_element ($topsection, $1, $2);
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| 277 | $meta->{$1} = $2;
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| 278 | } else {
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| 279 | # should be a section name
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| 280 | $line =~ s/^\s+//;
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| 281 | $line =~ s/\s+$//;
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| 282 | my ($pagenum) = $line =~ /([^_]*)$/;
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| 283 | # $doc_obj->create_named_section($pagenum); <-- can't do this anymore as pagenum may
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| 284 | # be something like "cover"
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| 285 | my $cursection = $doc_obj->insert_section($doc_obj->get_end_child($topsection));
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| 286 |
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| 287 | # $doc_obj->set_utf8_metadata_element($pagenum, 'Title', $pagenum);
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| 288 | $doc_obj->set_utf8_metadata_element($cursection, 'Title', $pagenum);
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| 289 | # $self->process_text ($dir, $line, $doc_obj, $pagenum);
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| 290 | $self->process_text ($dir, $line, $doc_obj, $cursection);
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| 291 | # $self->process_images ($dir, $line, $doc_obj, $pagenum);
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| 292 | $self->process_images ($dir, $line, $doc_obj, $cursection);
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| 293 | }
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| 294 | }
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| 295 | $file =~ s/\.issue//i;
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| 296 | $doc_obj->set_OID ($file);
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| 297 | $processor->process ($doc_obj);
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| 298 | return 1;
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| 299 | }
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| 300 |
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| 301 | sub process_images {
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| 302 | my $self = shift (@_);
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| 303 | my ($dir, $page, $doc_obj, $cursection) = @_;
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| 304 |
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| 305 | my $filename = &util::filename_cat ($dir, "images", $page);
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| 306 |
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| 307 | if (-e "$filename.gif") {
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| 308 | $self->{'num_image_pages'} ++;
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| 309 | $doc_obj->set_utf8_metadata_element ($cursection, "hasimg", "1");
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| 310 | $doc_obj->set_utf8_metadata_element ($cursection, "Source", $page);
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| 311 | $doc_obj->associate_file("$filename.gif", "$page.gif", "image/gif");
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| 312 | } elsif ($self->{'create_log'}) {
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| 313 | $doc_obj->set_utf8_metadata_element ($cursection, "hasimg", "0");
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| 314 | print LOGFILE "no fullsize image file for $page\n";
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| 315 | }
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| 316 |
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| 317 | if (-e "${filename}_p.gif") {
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| 318 | $doc_obj->set_utf8_metadata_element ($cursection, "hasprevimg", "1");
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| 319 | $doc_obj->set_utf8_metadata_element ($cursection, "Source", $page);
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| 320 | $doc_obj->associate_file("${filename}_p.gif", "${page}_p.gif", "image/gif");
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| 321 | } elsif ($self->{'create_log'}) {
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| 322 | $doc_obj->set_utf8_metadata_element ($cursection, "hasprevimg", "0");
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| 323 | print LOGFILE "no preview image file for $page\n";
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| 324 | }
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| 325 | }
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| 326 |
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| 327 | sub process_text {
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| 328 | my $self = shift (@_);
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| 329 | my ($dir, $page, $doc_obj, $cursection) = @_;
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| 330 | my ($text);
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| 331 |
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| 332 | my $filename = &util::filename_cat ($dir, "text", $page);
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| 333 | if (-e "$filename.htm") {
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| 334 | $text = $self->get_text ("$filename.htm");
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| 335 | } elsif (-e "$filename.txt") {
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| 336 | $text = $self->get_text ("$filename.txt");
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| 337 | }
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| 338 |
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| 339 | if (defined $text) {
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| 340 | $self->{'num_text_pages'} ++;
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| 341 | $doc_obj->add_utf8_text ($cursection, $text);
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| 342 | } elsif ($self->{'create_log'}) {
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| 343 | print LOGFILE "no txt or htm file for $page\n";
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| 344 | }
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| 345 | }
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| 346 |
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| 347 | sub process_abstract {
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| 348 | my $self = shift (@_);
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| 349 | my ($filename, $issuekey, $dir, $file, $processor, $meta) = @_;
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| 350 |
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| 351 | my $text = $self->get_text ($filename);
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| 352 | if (defined $text) {
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| 353 | $self->{'num_abstracts'} ++;
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| 354 | my $doc_obj = new doc ($file, "indexed_doc");
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| 355 | my $cursection = $doc_obj->get_top_section();
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| 356 | $self->associate_cover_images ($doc_obj, $dir, $issuekey);
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| 357 | $doc_obj->set_utf8_metadata_element ($cursection, 'Title', $self->get_title_string($file));
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| 358 | $self->set_main_metadata ($doc_obj, $dir);
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| 359 | map { $doc_obj->set_utf8_metadata_element ($cursection, $_, $meta->{$_}); } keys %$meta;
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| 360 | $doc_obj->set_utf8_metadata_element ($cursection, "doctype", "Description");
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| 361 | $doc_obj->add_utf8_text ($cursection, $text);
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| 362 | $file =~ s/\.abstract//i;
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| 363 | $doc_obj->set_OID ($file . "abstract");
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| 364 | $processor->process ($doc_obj);
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| 365 | return 1;
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| 366 | }
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| 367 |
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| 368 | if ($self->{'create_log'}) {
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| 369 | print LOGFILE "abstract file $filename doesn't exist\n";
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| 370 | }
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| 371 | return 0;
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| 372 | }
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| 373 |
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| 374 | sub process_commentary {
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| 375 | my $self = shift (@_);
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| 376 | my ($filename, $issuekey, $dir, $file, $processor) = @_;
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| 377 |
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| 378 | my $text = $self->get_text ($filename);
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| 379 |
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| 380 | return 0 unless defined $text;
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| 381 |
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| 382 | $self->{'commentaries'}->{$issuekey} = 1;
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| 383 | my $doc_obj = new doc ($file, "indexed_doc");
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| 384 | my $cursection = $doc_obj->get_top_section();
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| 385 | $self->associate_cover_images ($doc_obj, $dir, $issuekey);
|
|---|
| 386 | $doc_obj->set_utf8_metadata_element ($cursection, 'Title', "_commentary_");
|
|---|
| 387 | $self->set_main_metadata ($doc_obj, $dir);
|
|---|
| 388 | $doc_obj->set_utf8_metadata_element ($cursection, "doctype", "Commentary");
|
|---|
| 389 | $doc_obj->add_utf8_text ($cursection, $text);
|
|---|
| 390 | $doc_obj->set_OID ($issuekey . "commentary");
|
|---|
| 391 | $processor->process ($doc_obj);
|
|---|
| 392 | return 1;
|
|---|
| 393 | }
|
|---|
| 394 |
|
|---|
| 395 | sub associate_cover_images {
|
|---|
| 396 | my $self = shift (@_);
|
|---|
| 397 | my ($doc_obj, $dir, $issuekey) = @_;
|
|---|
| 398 |
|
|---|
| 399 | my $cover = &util::filename_cat ($dir, $issuekey);
|
|---|
| 400 | $doc_obj->associate_file("${cover}on.gif", "${issuekey}/coveron.gif", "image/gif");
|
|---|
| 401 | $doc_obj->associate_file("${cover}of.gif", "${issuekey}/coverof.gif", "image/gif");
|
|---|
| 402 | }
|
|---|
| 403 |
|
|---|
| 404 | # reads in the meta.txt file and sets metadata
|
|---|
| 405 | sub set_main_metadata {
|
|---|
| 406 | my $self = shift (@_);
|
|---|
| 407 | my ($doc_obj, $dir) = @_;
|
|---|
| 408 |
|
|---|
| 409 | my $metafile = &util::filename_cat ($dir, "meta.txt");
|
|---|
| 410 | return unless (-e $metafile);
|
|---|
| 411 |
|
|---|
| 412 | if (!open (METAFILE, $metafile)) {
|
|---|
| 413 | print STDERR "NPPlug: Couldn't read $metafile\n" if $self->{'verbosity'};
|
|---|
| 414 | return;
|
|---|
| 415 | }
|
|---|
| 416 |
|
|---|
| 417 | my $cursection = $doc_obj->get_top_section();
|
|---|
| 418 | my $line = "";
|
|---|
| 419 | while (defined ($line = <METAFILE>)) {
|
|---|
| 420 | next unless $line =~ /\w/;
|
|---|
| 421 | chomp $line;
|
|---|
| 422 | if ($line =~ /<([^>]*)>(.*)$/) {
|
|---|
| 423 | # note we're using set_metadata_element (not add_metadata_element)
|
|---|
| 424 | # this will override any previously set metadata of the same name
|
|---|
| 425 | $doc_obj->set_utf8_metadata_element ($cursection, $1, $2);
|
|---|
| 426 | } elsif ($self->{'verbosity'}) {
|
|---|
| 427 | print STDERR "NPPlug: Badly formatted line in $metafile\n";
|
|---|
| 428 | print STDERR "meta.txt lines should be formatted '<metaname>metavalue'\n";
|
|---|
| 429 | }
|
|---|
| 430 | }
|
|---|
| 431 | }
|
|---|
| 432 |
|
|---|
| 433 | sub get_text {
|
|---|
| 434 | my $self = shift (@_);
|
|---|
| 435 | my ($filename) = @_;
|
|---|
| 436 |
|
|---|
| 437 | if (open (FILE, $filename)) {
|
|---|
| 438 | my $text = "";
|
|---|
| 439 | my $line = "";
|
|---|
| 440 | if ($filename =~ /\.(htm|commentary|abstract)$/i) {
|
|---|
| 441 | my $savedtext = "";
|
|---|
| 442 | my $foundbody = 0;
|
|---|
| 443 | while (defined ($line = <FILE>)) {
|
|---|
| 444 | if ($line =~ s/.*?<body[^>]*>//i) {
|
|---|
| 445 | $foundbody = 1;
|
|---|
| 446 | }
|
|---|
| 447 | $line =~ s/(<\/?html[^>]*>|<\/?head[^>]*>|<\/p>|<\/?font[^>]*>|<\/?body[^>]*>)//ig;
|
|---|
| 448 | if ($foundbody) {
|
|---|
| 449 | $text .= $line;
|
|---|
| 450 | } else {
|
|---|
| 451 | $savedtext .= $line;
|
|---|
| 452 | }
|
|---|
| 453 | }
|
|---|
| 454 | close FILE;
|
|---|
| 455 | if (!$foundbody) {$text = $savedtext;}
|
|---|
| 456 | if ($filename =~ /\.(commentary|abstract)$/i) {
|
|---|
| 457 | # commentaries and abstracts should already be utf8
|
|---|
| 458 | return $text;
|
|---|
| 459 | } else {
|
|---|
| 460 | # a few extended ascii characters have snuck through
|
|---|
| 461 | # in some text files so we need to convert them to utf8
|
|---|
| 462 | return &unicode::ascii2utf8(\$text);
|
|---|
| 463 | }
|
|---|
| 464 |
|
|---|
| 465 | } else {
|
|---|
| 466 | while (defined ($line = <FILE>)) {
|
|---|
| 467 | $line = "<p>\n" unless $line =~ /\w/;
|
|---|
| 468 | $text .= $line;
|
|---|
| 469 | }
|
|---|
| 470 | close FILE;
|
|---|
| 471 | # a few extended ascii characters have snuck through
|
|---|
| 472 | # in some text files so we need to convert them to utf8
|
|---|
| 473 | return &unicode::ascii2utf8(\$text);
|
|---|
| 474 | }
|
|---|
| 475 |
|
|---|
| 476 | } else {
|
|---|
| 477 | print STDERR "NPPlug: Warning: get_text() couldn't open $filename\n"
|
|---|
| 478 | if $self->{'verbosity'};
|
|---|
| 479 | return undef;
|
|---|
| 480 | }
|
|---|
| 481 | }
|
|---|
| 482 |
|
|---|
| 483 | sub get_title_string {
|
|---|
| 484 | my $self = shift (@_);
|
|---|
| 485 | my ($filename) = @_;
|
|---|
| 486 |
|
|---|
| 487 | $filename =~ s/\.(issue|abstract)$//i;
|
|---|
| 488 | my ($series, $vol, $num) = split /\_/, $filename;
|
|---|
| 489 | my $title = "";
|
|---|
| 490 | $title .= "_vol_ $vol" if defined $vol && $vol =~ /\w/;
|
|---|
| 491 | if (defined $num && $num =~ /\w/) {
|
|---|
| 492 | $title .= ", " if defined $vol && $vol =~ /\w/;
|
|---|
| 493 | $title .= "_num_ $num";
|
|---|
| 494 | }
|
|---|
| 495 | return $title;
|
|---|
| 496 | }
|
|---|
| 497 |
|
|---|
| 498 | 1;
|
|---|
