| 1 | ###########################################################################
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| 2 | #
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| 3 | # BibTexPlugin.pm - a plugin for bibliography records in BibTex format
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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 2000 Gordon W. Paynter
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| 10 | # Copyright 1999-2001 New Zealand Digital Library Project
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| 11 | #
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| 12 | # This program is free software; you can redistribute it and/or modify
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| 13 | # it under the terms of the GNU General Public License as published by
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| 14 | # the Free Software Foundation; either version 2 of the License, or
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| 15 | # (at your option) any later version.
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| 16 | #
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| 17 | # This program is distributed in the hope that it will be useful,
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| 18 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | # GNU General Public License for more details.
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| 21 | #
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| 22 | # You should have received a copy of the GNU General Public License
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| 23 | # along with this program; if not, write to the Free Software
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| 24 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 25 | #
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| 26 | ###########################################################################
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| 27 |
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| 28 |
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| 29 | # BibTexPlugin reads bibliography files in BibTex format.
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| 30 | #
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| 31 | # by Gordon W. Paynter ([email protected]), November 2000
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| 32 | # Based on ReferPlug. See ReferPlug for geneology.
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| 33 | #
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| 34 | # BibTexPlugin creates a document object for every reference a the file.
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| 35 | # It is a subclass of SplitTextFile, so if there are multiple records, all
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| 36 | # are read.
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| 37 | #
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| 38 | # Modified Dec 2001 by John McPherson:
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| 39 | # * some modifications submitted by Sergey Yevtushenko
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| 40 | # <[email protected]>
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| 41 | # * some non-ascii char support (ie mostly Latin)
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| 42 |
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| 43 |
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| 44 | package BibTexPlugin;
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| 45 |
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| 46 | use SplitTextFile;
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| 47 | use strict;
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| 48 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 49 |
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| 50 | # BibTexPlugin is a sub-class of SplitTextFile.
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| 51 | sub BEGIN {
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| 52 | @BibTexPlugin::ISA = ('SplitTextFile');
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| 53 | }
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| 54 |
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| 55 | my $arguments =
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| 56 | [ { 'name' => "process_exp",
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| 57 | 'desc' => "{BasePlugin.process_exp}",
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| 58 | 'type' => "regexp",
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| 59 | 'reqd' => "no",
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| 60 | 'deft' => &get_default_process_exp() },
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| 61 | { 'name' => "split_exp",
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| 62 | 'desc' => "{SplitTextFile.split_exp}",
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| 63 | 'type' => "regexp",
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| 64 | 'deft' => &get_default_split_exp(),
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| 65 | 'reqd' => "no" }
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| 66 | ];
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| 67 |
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| 68 | my $options = { 'name' => "BibTexPlugin",
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| 69 | 'desc' => "{BibTexPlugin.desc}",
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| 70 | 'abstract' => "no",
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| 71 | 'inherits' => "yes",
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| 72 | 'explodes' => "yes",
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| 73 | 'args' => $arguments };
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| 74 |
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| 75 | # This plugin processes files with the suffix ".bib"
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| 76 | sub get_default_process_exp {
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| 77 | return q^(?i)\.bib$^;
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| 78 | }
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| 79 |
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| 80 | # This plugin splits the input text at blank lines
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| 81 | sub get_default_split_exp {
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| 82 | return q^\n+(?=@)^;
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| 83 | }
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| 84 |
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| 85 | sub new {
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| 86 | my ($class) = shift (@_);
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| 87 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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| 88 | push(@$pluginlist, $class);
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| 89 |
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| 90 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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| 91 | push(@{$hashArgOptLists->{"OptList"}},$options);
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| 92 |
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| 93 | my $self = new SplitTextFile($pluginlist, $inputargs, $hashArgOptLists);
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| 94 |
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| 95 | return bless $self, $class;
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| 96 | }
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| 97 |
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| 98 |
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| 99 |
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| 100 | # The process function reads a single bibliographic record and stores
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| 101 | # it as a new document.
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| 102 |
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| 103 | sub process {
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| 104 | my $self = shift (@_);
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| 105 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
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| 106 | my $outhandle = $self->{'outhandle'};
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| 107 |
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| 108 | my $cursection = $doc_obj->get_top_section();
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| 109 | $self->{'key'} = "default";
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| 110 |
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| 111 | # Check that we're dealing with a valid BibTex record
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| 112 | return undef unless ($$textref =~ /^@\w+\{.*\}/s);
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| 113 |
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| 114 | # Ignore things we can't use
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| 115 | return 0 if ($$textref =~ /^\@String/);
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| 116 |
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| 117 | # This hash translates BibTex field names into metadata names. The
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| 118 | # BibTex names are taken from the "Local Guide to Latex" Graeme
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| 119 | # McKinstry. Metadata names are consistent with ReferPlug.
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| 120 |
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| 121 | # The author metadata will be stored as one "Creator" entry, but will
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| 122 | # also be split up into several individual "Author" fields.
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| 123 |
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| 124 | my %field = (
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| 125 | 'address', 'PublisherAddress',
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| 126 | 'author', 'Creator',
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| 127 |
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| 128 | 'booktitle', 'Booktitle',
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| 129 | 'chapter', 'Chapter',
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| 130 | 'edition', 'Edition',
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| 131 | 'editor', 'Editor',
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| 132 | 'institution', 'Publisher',
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| 133 | 'journal', 'Journal',
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| 134 | 'month', 'Month',
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| 135 | 'number', 'Number',
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| 136 | 'pages', 'Pages',
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| 137 | 'publisher', 'Publisher',
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| 138 | 'school', 'Publisher',
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| 139 | 'title', 'Title',
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| 140 | 'volume', 'Volume',
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| 141 | 'year', 'Year', # Can't use "Date" as this implies DDDDMMYY!
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| 142 |
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| 143 | 'keywords', 'Keywords',
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| 144 | 'abstract', 'Abstract',
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| 145 | 'copyright', 'Copyright',
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| 146 | 'note', 'Note',
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| 147 | 'url', 'URL',
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| 148 | );
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| 149 |
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| 150 | # Metadata fields
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| 151 | my %metadata;
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| 152 | my ($EntryType, $Creator, $Keywords, $text);
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| 153 |
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| 154 | my $verbosity = $self->{'verbosity'};
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| 155 | $verbosity = 0 unless $verbosity;
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| 156 |
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| 157 | # Make sure the text has exactly one entry per line -
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| 158 | # append line to previous if it doesn't start with " <key> = "
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| 159 |
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| 160 | my @input_lines=split(/\r?\n/, $$textref);
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| 161 | my @all_lines;
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| 162 | my $entry_line=shift @input_lines;
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| 163 | foreach my $input_line (@input_lines) {
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| 164 | if ($input_line =~ m/^\s*\w+\s*=\s*/) {
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| 165 | # this is a new key
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| 166 | push(@all_lines, $entry_line);
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| 167 | $entry_line=$input_line;
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| 168 | } else {
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| 169 | # this is a continuation of previous line
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| 170 | $entry_line .= " " . $input_line;
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| 171 | }
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| 172 |
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| 173 | }
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| 174 | # add final line, removing trailing '}'
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| 175 | $entry_line =~ s/\}\s*$//;
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| 176 | push(@all_lines, $entry_line);
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| 177 | push(@all_lines, "}");
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| 178 |
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| 179 | # Read and process each line in the bib file.
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| 180 | my ($entryname, $name, $value, $line);
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| 181 | foreach $line (@all_lines) {
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| 182 |
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| 183 | # Add each line. Most lines consist of a field identifer and
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| 184 | # then data, and we simply store them, though we treat some
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| 185 | # of the fields a bit differently.
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| 186 |
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| 187 | $line =~ s/\s+/ /g;
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| 188 | $text .= "$line\n";
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| 189 |
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| 190 |
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| 191 | print "Processing line = $line \n" if $verbosity>=4;
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| 192 |
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| 193 | # The first line is special, it contains the reference type and OID
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| 194 | if ($line =~ /\@(\w+)\W*\{\W*([\*\.\w\d:-]*)\W*$/) {
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| 195 | $EntryType = $1;
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| 196 | my $EntryID = (defined $2) ? $2 : "default";
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| 197 | print "** $EntryType - \"$EntryID\" \n"
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| 198 | if ($verbosity >= 4);
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| 199 |
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| 200 | next;
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| 201 | }
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| 202 | if ($line =~ /\@/) {
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| 203 | print $outhandle "bibtexplug: suspect line in bibtex file: $line\n"
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| 204 | if ($verbosity >= 2);
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| 205 | print $outhandle "bibtexplug: if that's the start of a new bibtex record ammend regexp in bibtexplug::process()\n"
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| 206 | if ($verbosity >= 2);
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| 207 | }
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| 208 |
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| 209 | # otherwise, parse the metadata out of this line
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| 210 | next unless ($line =~ /^\s*(\w+)\s*=\s*(.*)/);
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| 211 | $entryname = lc($1);
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| 212 | $value = $2;
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| 213 | $value =~ s/,?\s*$//; # remove trailing comma and space
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| 214 | if ($value =~ /^"/ && $value =~ /"$/) {
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| 215 | # remove surrounding " marks
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| 216 | $value =~ s/^"//; $value =~ s/"$//;
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| 217 | } elsif ($value =~ /^\{/ && $value =~ /\}$/) {
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| 218 | # remove surrounding {} marks
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| 219 | $value =~ s/^\{//; $value =~ s/\}$//;
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| 220 | }
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| 221 | # special case for year - we only want a 4 digit year, not
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| 222 | # "circa 2004" etc
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| 223 | if ($entryname=~ /^year$/i) {
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| 224 | if ($value=~ /(\d{4})/) {
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| 225 | $value=$1;
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| 226 | $metadata{$entryname} .= "$value";
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| 227 | }
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| 228 | }
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| 229 | else {
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| 230 |
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| 231 | $value = &process_latex($value);
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| 232 | # Add this line of metadata
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| 233 | $metadata{$entryname} .= "$value";
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| 234 | }
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| 235 | }
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| 236 |
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| 237 | # Add the Entry type as metadata
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| 238 | $doc_obj->add_utf8_metadata ($cursection, "EntryType", $EntryType);
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| 239 |
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| 240 | #Add the fileformat as metadata
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| 241 | $doc_obj->add_metadata($cursection, "FileFormat", "BibTex");
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| 242 |
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| 243 |
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| 244 | # Add the various field as metadata
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| 245 | foreach my $entryname (keys %metadata) {
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| 246 | next unless (defined $field{$entryname});
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| 247 | next unless (defined $metadata{$entryname});
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| 248 |
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| 249 | $name = $field{$entryname};
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| 250 | $value = $metadata{$entryname};
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| 251 |
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| 252 | if ($name =~ /^Month/) {
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| 253 | $value=expand_month($value);
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| 254 | }
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| 255 |
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| 256 | # Several special operatons on metadata follow
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| 257 |
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| 258 | # Add individual keywords.
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| 259 | # The full set of keywords will be added, in due course, as "Keywords".
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| 260 | # However, we also want to add them as individual "Keyword" metadata elements.
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| 261 | if ($entryname eq "keywords") {
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| 262 | my @keywordlist = split(/,/, $value);
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| 263 | foreach my $k (@keywordlist) {
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| 264 | $k = lc($k);
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| 265 | $k =~ s/\s*$//;
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| 266 | $k =~ s/^\s*//;
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| 267 | if ($k =~ /\w/) {
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| 268 | $doc_obj->add_utf8_metadata ($cursection, "Keyword", $k);
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| 269 | }
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| 270 | }
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| 271 | }
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| 272 |
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| 273 | # Add individual authors
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| 274 | # The author metadata will be stored as one "Creator" entry, but we
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| 275 | # also want to split it into several individual "Author" fields in
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| 276 | # "Lastname, Firstnames" format so we can browse it.
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| 277 | if ($entryname eq "author") { #added also comparison with editor
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| 278 |
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| 279 | # take care of "et al."...
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| 280 | my $etal='';
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| 281 | if ($value =~ s/\s+(and\s+others|et\.?\s+al\.?)\s*$//i) {
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| 282 | $etal=' <em>et. al.</em>';
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| 283 | }
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| 284 | # und here for german language...
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| 285 | # don't use brackets in pattern, else the matched bit becomes
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| 286 | # an element in the list!
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| 287 | my @authorlist = split(/\s+and\s+|\s+und\s+/, $value);
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| 288 | my @formattedlist = ();
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| 289 | foreach $a (@authorlist) {
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| 290 | $a =~ s/\s*$//;
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| 291 | $a =~ s/^\s*//;
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| 292 | # Reformat and add author name
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| 293 | next if $a=~ /^\s*$/;
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| 294 |
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| 295 | # names are "First von Last", "von Last, First"
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| 296 | # or "von Last, Jr, First". See the "BibTeXing" manual, page 16
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| 297 | my $first="";
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| 298 | my $vonlast="";
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| 299 | my $jr="";
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| 300 |
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| 301 | if ($a =~ /,/) {
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| 302 | my @parts=split(/,\s*/, $a);
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| 303 | $first = pop @parts;
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| 304 | if (scalar(@parts) == 2) {
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| 305 | $jr = pop @parts;
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| 306 | }
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| 307 | $vonlast=shift @parts;
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| 308 | if (scalar(@parts) > 0) {
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| 309 | print $outhandle "BibTexPlugin: couldn't parse name $a\n";
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| 310 | # but we continue anyway...
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| 311 | }
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| 312 | } else { # First von Last
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| 313 | my @words = split(/ /, $a);
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| 314 | while (scalar(@words) > 1 && $words[0] !~ /^[a-z]{2..}/) {
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| 315 | $first .= " " . shift (@words);
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| 316 | }
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| 317 | $first =~ s/^\s//;
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| 318 | $vonlast = join (' ', @words); # whatever's left...
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| 319 | }
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| 320 | my $von="";
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| 321 | my $last="";
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| 322 | if ($vonlast =~ m/^[a-z]/) { # lowercase implies "von"
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| 323 | $vonlast =~ s/^(([a-z]\w+\s+)+)//;
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| 324 | $von = $1;
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| 325 | if (!defined ($von)) {
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| 326 | # some non-English names do start with lowercase
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| 327 | # eg "Marie desJardins". Also we can get typos...
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| 328 | print $outhandle "BibTexPlugin: couldn't parse surname $vonlast\n";
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| 329 | $von="";
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| 330 | if ($vonlast =~ /^[a-z]+$/) {
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| 331 | # if it's all lowercase, uppercase 1st.
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| 332 | $vonlast =~ s/^(.)/\u$1/;
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| 333 |
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| 334 | }
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| 335 | }
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| 336 | $von =~ s/\s*$//;
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| 337 | $last=$vonlast;
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| 338 | } else {
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| 339 | $last=$vonlast;
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| 340 | }
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| 341 | my $wholename="$first $von $last $jr";
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| 342 | $wholename =~ s/\s+/ /g; # squeeze multiple spaces
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| 343 | $wholename =~ s/ $//;
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| 344 | push (@formattedlist, $wholename);
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| 345 | my $fullname = "$last";
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| 346 | $fullname .= " $jr" if ($jr);
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| 347 | $fullname .= ", $first";
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| 348 | $fullname .= " $von" if ($von);
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| 349 |
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| 350 | # Add each name to set of Authors
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| 351 | $doc_obj->add_utf8_metadata ($cursection, "Author", $fullname);
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| 352 | }
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| 353 |
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| 354 | # Only want at most one "and" in the Creator field
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| 355 | if (scalar(@formattedlist) > 2) {
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| 356 | my $lastauthor=pop @formattedlist;
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| 357 | $value=join(', ', @formattedlist);
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| 358 | $value.=" and $lastauthor";
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| 359 | } else { # 1 or 2 authors...
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| 360 | $value=join(" and ",@formattedlist);
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| 361 | }
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| 362 | $value.=$etal; # if there was "et al."
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| 363 | }
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| 364 |
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| 365 | # Books and Journals are additionally marked for display purposes
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| 366 | if ($entryname eq "booktitle") {
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| 367 | $doc_obj->add_utf8_metadata($cursection, "BookConfOnly", 1);
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| 368 | } elsif ($entryname eq "journal") {
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| 369 | $doc_obj->add_utf8_metadata($cursection, "JournalsOnly", 1);
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| 370 | }
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| 371 |
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| 372 | # Add the various fields as metadata
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| 373 | $doc_obj->add_utf8_metadata ($cursection, $name, $value);
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| 374 |
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| 375 | }
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| 376 |
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| 377 | # for books and journals...
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| 378 | if (!exists $metadata{'title'}) {
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| 379 | my $name=$field{'title'}; # get Greenstone metadata name
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| 380 | my $value;
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| 381 | if (exists $metadata{'booktitle'}) {
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| 382 | $value=$metadata{'booktitle'};
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| 383 | } elsif (exists $metadata{'journal'}) {
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| 384 | $value=$metadata{'journal'};
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| 385 | }
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| 386 | if ($value) {
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| 387 | $doc_obj->add_utf8_metadata ($cursection, $name, $value);
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| 388 | }
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| 389 | }
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| 390 |
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| 391 | # Add Date (yyyymmdd) metadata
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| 392 | if (defined ($metadata{'year'}) ) {
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| 393 | my $date=$metadata{'year'};
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| 394 | chomp $date;
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| 395 | my $month=$metadata{'month'};
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| 396 | if (defined($month)) {
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| 397 | # month is currently 3 letter code or a range...
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| 398 | $month = expand_month($month);
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| 399 | # take the first month found... might not find one!
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| 400 | $month =~ m/_textmonth(\d\d)_/;
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| 401 | $month = $1;
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| 402 | }
|
|---|
| 403 | if (!defined($month)) {
|
|---|
| 404 | $month="00";
|
|---|
| 405 | }
|
|---|
| 406 | $date .= "${month}00";
|
|---|
| 407 | $doc_obj->add_utf8_metadata($cursection, "Date", $date);
|
|---|
| 408 | }
|
|---|
| 409 |
|
|---|
| 410 | # # Add the text in BibTex format (all fields)
|
|---|
| 411 | if ($text =~ /\w/) {
|
|---|
| 412 |
|
|---|
| 413 | $text =~ s@&@&@g;
|
|---|
| 414 | $text =~ s@<@<@g;
|
|---|
| 415 | $text =~ s@>@>@g;
|
|---|
| 416 | $text =~ s@\n@<br/>\n@g;
|
|---|
| 417 | $text =~ s@\\@\\\\@g;
|
|---|
| 418 |
|
|---|
| 419 | $doc_obj->add_utf8_text ($cursection, $text);
|
|---|
| 420 | }
|
|---|
| 421 |
|
|---|
| 422 | return 1;
|
|---|
| 423 | }
|
|---|
| 424 |
|
|---|
| 425 |
|
|---|
| 426 |
|
|---|
| 427 |
|
|---|
| 428 | # convert email addresses and URLs into links
|
|---|
| 429 | sub convert_urls_into_links{
|
|---|
| 430 | my ($text) = @_;
|
|---|
| 431 |
|
|---|
| 432 | $text =~ s/([\w\d\.\-]+@[\w\d\.\-]+)/<a href=\"mailto:$1\">$1<\/a>/g;
|
|---|
| 433 | $text =~ s/(http:\/\/[\w\d\.\-]+[\/\w\d\.\-]*)/<a href=\"$1\">$1<\/a>/g;
|
|---|
| 434 |
|
|---|
| 435 | return $text;
|
|---|
| 436 | }
|
|---|
| 437 |
|
|---|
| 438 | # Clean up whitespace and convert \n charaters to <BR> or <P>
|
|---|
| 439 | sub clean_up_whitespaces{
|
|---|
| 440 | my ($text) = @_;
|
|---|
| 441 |
|
|---|
| 442 | $text =~ s/%%%%%/<BR> <BR>/g;
|
|---|
| 443 | $text =~ s/ +/ /g;
|
|---|
| 444 | $text =~ s/\s*$//;
|
|---|
| 445 | $text =~ s/^\s*//;
|
|---|
| 446 | $text =~ s/\n/\n<BR>/g;
|
|---|
| 447 | $text =~ s/<BR>\s*<BR>/<P>/g;
|
|---|
| 448 |
|
|---|
| 449 | return $text;
|
|---|
| 450 | }
|
|---|
| 451 |
|
|---|
| 452 |
|
|---|
| 453 | sub convert_problem_characters_without_ampersand{
|
|---|
| 454 | my ($text) = @_;
|
|---|
| 455 | $text =~ s/</</g;
|
|---|
| 456 | $text =~ s/>/>/g;
|
|---|
| 457 |
|
|---|
| 458 | $text =~ s/\'\'/\"/g; #Latex -specific conversion
|
|---|
| 459 | $text =~ s/\`\`/\"/g; #Latex -specific conversion
|
|---|
| 460 |
|
|---|
| 461 | $text =~ s/\"/"/g;
|
|---|
| 462 | $text =~ s/\'/’/g;
|
|---|
| 463 | $text =~ s/\`/‘/g;
|
|---|
| 464 |
|
|---|
| 465 | # $text =~ s/\+/ /g;
|
|---|
| 466 | # $text =~ s/\(/ /g;
|
|---|
| 467 | # $text =~ s/\)/ /g;
|
|---|
| 468 |
|
|---|
| 469 | $text =~ s/\\/\\\\/g;
|
|---|
| 470 |
|
|---|
| 471 | # $text =~ s/\./\\\./g;
|
|---|
| 472 |
|
|---|
| 473 | return $text;
|
|---|
| 474 | }
|
|---|
| 475 |
|
|---|
| 476 | # Convert a text string into HTML.
|
|---|
| 477 |
|
|---|
| 478 | # The HTML is going to be inserted into a GML file, so we have to be
|
|---|
| 479 | # careful not to use symbols like ">", which occurs frequently in email
|
|---|
| 480 | # messages (and use > instead.
|
|---|
| 481 |
|
|---|
| 482 | # This function also turns URLs and email addresses into links, and
|
|---|
| 483 | # replaces carriage returns with <BR> tags (and multiple carriage returns
|
|---|
| 484 | # with <P> tags).
|
|---|
| 485 |
|
|---|
| 486 | sub text_into_html {
|
|---|
| 487 | my ($text) = @_;
|
|---|
| 488 |
|
|---|
| 489 | # Convert problem characters into HTML symbols
|
|---|
| 490 | $text =~ s/&/&/g;
|
|---|
| 491 |
|
|---|
| 492 | $text = &convert_problem_characters_without_ampersand( $text );
|
|---|
| 493 |
|
|---|
| 494 | # convert email addresses and URLs into links
|
|---|
| 495 | $text = &convert_urls_into_links( $text );
|
|---|
| 496 |
|
|---|
| 497 | $text = &clean_up_whitespaces( $text );
|
|---|
| 498 |
|
|---|
| 499 | return $text;
|
|---|
| 500 | }
|
|---|
| 501 |
|
|---|
| 502 |
|
|---|
| 503 | sub expand_month {
|
|---|
| 504 | my $text=shift;
|
|---|
| 505 |
|
|---|
| 506 | # bibtex style files expand abbreviations for months.
|
|---|
| 507 | # Entries can contain more than one month (eg ' month = jun # "-" # aug, ')
|
|---|
| 508 | $text =~ s/jan/_textmonth01_/g;
|
|---|
| 509 | $text =~ s/feb/_textmonth02_/g;
|
|---|
| 510 | $text =~ s/mar/_textmonth03_/g;
|
|---|
| 511 | $text =~ s/apr/_textmonth04_/g;
|
|---|
| 512 | $text =~ s/may/_textmonth05_/g;
|
|---|
| 513 | $text =~ s/jun/_textmonth06_/g;
|
|---|
| 514 | $text =~ s/jul/_textmonth07_/g;
|
|---|
| 515 | $text =~ s/aug/_textmonth08_/g;
|
|---|
| 516 | $text =~ s/sep/_textmonth09_/g;
|
|---|
| 517 | $text =~ s/oct/_textmonth10_/g;
|
|---|
| 518 | $text =~ s/nov/_textmonth11_/g;
|
|---|
| 519 | $text =~ s/dec/_textmonth12_/g;
|
|---|
| 520 |
|
|---|
| 521 | return $text;
|
|---|
| 522 | }
|
|---|
| 523 |
|
|---|
| 524 |
|
|---|
| 525 | # Convert accented characters, remove { }, interprete some commands....
|
|---|
| 526 | # Note!! This is not comprehensive! Also assumes Latin -> Unicode!
|
|---|
| 527 | sub process_latex {
|
|---|
| 528 | my ($text) = @_;
|
|---|
| 529 |
|
|---|
| 530 | # note - this is really ugly, but it works. There may be a prettier way
|
|---|
| 531 | # of mapping latex accented chars to utf8, but we just brute force it here.
|
|---|
| 532 | # Also, this isn't complete - not every single possible accented letter
|
|---|
| 533 | # is in here yet, but most of the common ones are.
|
|---|
| 534 |
|
|---|
| 535 | my %utf8_chars =
|
|---|
| 536 | (
|
|---|
| 537 | # acutes
|
|---|
| 538 | '\'a' => chr(0xc3).chr(0xa1),
|
|---|
| 539 | '\'c' => chr(0xc4).chr(0x87),
|
|---|
| 540 | '\'e' => chr(0xc3).chr(0xa9),
|
|---|
| 541 | '\'i' => chr(0xc3).chr(0xad),
|
|---|
| 542 | '\'l' => chr(0xc3).chr(0xba),
|
|---|
| 543 | '\'n' => chr(0xc3).chr(0x84),
|
|---|
| 544 | '\'o' => chr(0xc3).chr(0xb3),
|
|---|
| 545 | '\'r' => chr(0xc5).chr(0x95),
|
|---|
| 546 | '\'s' => chr(0xc5).chr(0x9b),
|
|---|
| 547 | '\'u' => chr(0xc3).chr(0xba),
|
|---|
| 548 | '\'y' => chr(0xc3).chr(0xbd),
|
|---|
| 549 | '\'z' => chr(0xc5).chr(0xba),
|
|---|
| 550 | # graves
|
|---|
| 551 | '`a' => chr(0xc3).chr(0xa0),
|
|---|
| 552 | '`A' => chr(0xc3).chr(0x80),
|
|---|
| 553 | '`e' => chr(0xc3).chr(0xa8),
|
|---|
| 554 | '`E' => chr(0xc3).chr(0x88),
|
|---|
| 555 | '`i' => chr(0xc3).chr(0xac),
|
|---|
| 556 | '`I' => chr(0xc3).chr(0x8c),
|
|---|
| 557 | '`o' => chr(0xc3).chr(0xb2),
|
|---|
| 558 | '`O' => chr(0xc3).chr(0x92),
|
|---|
| 559 | '`u' => chr(0xc3).chr(0xb9),
|
|---|
| 560 | '`U' => chr(0xc3).chr(0x99),
|
|---|
| 561 | # circumflex
|
|---|
| 562 | '^a' => chr(0xc3).chr(0xa2),
|
|---|
| 563 | '^A' => chr(0xc3).chr(0x82),
|
|---|
| 564 | '^c' => chr(0xc4).chr(0x89),
|
|---|
| 565 | '^C' => chr(0xc4).chr(0x88),
|
|---|
| 566 | '^e' => chr(0xc3).chr(0xaa),
|
|---|
| 567 | '^E' => chr(0xc3).chr(0x8a),
|
|---|
| 568 | '^g' => chr(0xc4).chr(0x9d),
|
|---|
| 569 | '^G' => chr(0xc4).chr(0x9c),
|
|---|
| 570 | '^h' => chr(0xc4).chr(0xa5),
|
|---|
| 571 | '^H' => chr(0xc4).chr(0xa4),
|
|---|
| 572 | '^i' => chr(0xc3).chr(0xae),
|
|---|
| 573 | '^I' => chr(0xc3).chr(0x8e),
|
|---|
| 574 | '^j' => chr(0xc4).chr(0xb5),
|
|---|
| 575 | '^J' => chr(0xc4).chr(0xb4),
|
|---|
| 576 | '^o' => chr(0xc3).chr(0xb4),
|
|---|
| 577 | '^O' => chr(0xc3).chr(0x94),
|
|---|
| 578 | '^s' => chr(0xc5).chr(0x9d),
|
|---|
| 579 | '^S' => chr(0xc5).chr(0x9c),
|
|---|
| 580 | '^u' => chr(0xc3).chr(0xa2),
|
|---|
| 581 | '^U' => chr(0xc3).chr(0xbb),
|
|---|
| 582 | '^w' => chr(0xc5).chr(0xb5),
|
|---|
| 583 | '^W' => chr(0xc5).chr(0xb4),
|
|---|
| 584 | '^y' => chr(0xc5).chr(0xb7),
|
|---|
| 585 | '^Y' => chr(0xc5).chr(0xb6),
|
|---|
| 586 |
|
|---|
| 587 | # diaeresis
|
|---|
| 588 | '"a' => chr(0xc3).chr(0xa4),
|
|---|
| 589 | '"A' => chr(0xc3).chr(0x84),
|
|---|
| 590 | '"e' => chr(0xc3).chr(0xab),
|
|---|
| 591 | '"E' => chr(0xc3).chr(0x8b),
|
|---|
| 592 | '"\\\\i' => chr(0xc3).chr(0xaf),
|
|---|
| 593 | '"\\\\I' => chr(0xc3).chr(0x8f),
|
|---|
| 594 | '"o' => chr(0xc3).chr(0xb6),
|
|---|
| 595 | '"O' => chr(0xc3).chr(0x96),
|
|---|
| 596 | '"u' => chr(0xc3).chr(0xbc),
|
|---|
| 597 | '"U' => chr(0xc3).chr(0x9c),
|
|---|
| 598 | '"y' => chr(0xc3).chr(0xbf),
|
|---|
| 599 | '"Y' => chr(0xc3).chr(0xb8),
|
|---|
| 600 | # tilde
|
|---|
| 601 | '~A' => chr(0xc3).chr(0x83),
|
|---|
| 602 | '~N' => chr(0xc3).chr(0x91),
|
|---|
| 603 | '~O' => chr(0xc3).chr(0x95),
|
|---|
| 604 | '~a' => chr(0xc3).chr(0xa3),
|
|---|
| 605 | '~n' => chr(0xc3).chr(0xb1),
|
|---|
| 606 | '~o' => chr(0xc3).chr(0xb5),
|
|---|
| 607 | # caron - handled specially
|
|---|
| 608 | # double acute
|
|---|
| 609 | # ring
|
|---|
| 610 | # dot
|
|---|
| 611 | '.c' => chr(0xc4).chr(0x8b),
|
|---|
| 612 | '.C' => chr(0xc4).chr(0x8a),
|
|---|
| 613 | '.e' => chr(0xc4).chr(0x97),
|
|---|
| 614 | '.E' => chr(0xc4).chr(0x96),
|
|---|
| 615 | '.g' => chr(0xc4).chr(0xa1),
|
|---|
| 616 | '.G' => chr(0xc4).chr(0xa0),
|
|---|
| 617 | '.I' => chr(0xc4).chr(0xb0),
|
|---|
| 618 | '.z' => chr(0xc5).chr(0xbc),
|
|---|
| 619 | '.Z' => chr(0xc5).chr(0xbb),
|
|---|
| 620 | # macron
|
|---|
| 621 | '=a' => chr(0xc4).chr(0x81),
|
|---|
| 622 | '=A' => chr(0xc4).chr(0x80),
|
|---|
| 623 | '=e' => chr(0xc4).chr(0x93),
|
|---|
| 624 | '=E' => chr(0xc4).chr(0x92),
|
|---|
| 625 | '=i' => chr(0xc4).chr(0xab),
|
|---|
| 626 | '=I' => chr(0xc4).chr(0xaa),
|
|---|
| 627 | '=o' => chr(0xc4).chr(0x8d),
|
|---|
| 628 | '=O' => chr(0xc4).chr(0x8c),
|
|---|
| 629 | '=u' => chr(0xc4).chr(0xab),
|
|---|
| 630 | '=U' => chr(0xc4).chr(0xaa),
|
|---|
| 631 |
|
|---|
| 632 | # stroke - handled specially - see below
|
|---|
| 633 |
|
|---|
| 634 | # cedilla - handled specially
|
|---|
| 635 | );
|
|---|
| 636 |
|
|---|
| 637 | # these are one letter latex commands - we make sure they're not a longer
|
|---|
| 638 | # command name. eg {\d} is d+stroke, so careful of \d
|
|---|
| 639 | my %special_utf8_chars =
|
|---|
| 640 | (
|
|---|
| 641 | # breve
|
|---|
| 642 | 'u g' => chr(0xc4).chr(0x9f),
|
|---|
| 643 | 'u G' => chr(0xc4).chr(0x9e),
|
|---|
| 644 | 'u i' => chr(0xc4).chr(0xad),
|
|---|
| 645 | 'u I' => chr(0xc4).chr(0xac),
|
|---|
| 646 | 'u o' => chr(0xc5).chr(0x8f),
|
|---|
| 647 | 'u O' => chr(0xc5).chr(0x8e),
|
|---|
| 648 | 'u u' => chr(0xc5).chr(0xad),
|
|---|
| 649 | 'u U' => chr(0xc5).chr(0xac),
|
|---|
| 650 | # caron
|
|---|
| 651 | 'v c' => chr(0xc4).chr(0x8d),
|
|---|
| 652 | 'v C' => chr(0xc4).chr(0x8c),
|
|---|
| 653 | 'v n' => chr(0xc5).chr(0x88),
|
|---|
| 654 | 'v N' => chr(0xc5).chr(0x87),
|
|---|
| 655 | 'v s' => chr(0xc5).chr(0xa1),
|
|---|
| 656 | 'v S' => chr(0xc5).chr(0xa5),
|
|---|
| 657 | 'v z' => chr(0xc5).chr(0xbe),
|
|---|
| 658 | 'v Z' => chr(0xc5).chr(0xbd),
|
|---|
| 659 | # cedilla
|
|---|
| 660 | 'c c' => chr(0xc3).chr(0xa7),
|
|---|
| 661 | 'c C' => chr(0xc3).chr(0x87),
|
|---|
| 662 | 'c g' => chr(0xc4).chr(0xa3),
|
|---|
| 663 | 'c G' => chr(0xc4).chr(0xa2),
|
|---|
| 664 | 'c k' => chr(0xc4).chr(0xb7),
|
|---|
| 665 | 'c K' => chr(0xc4).chr(0xb6),
|
|---|
| 666 | 'c l' => chr(0xc4).chr(0xbc),
|
|---|
| 667 | 'c L' => chr(0xc4).chr(0xbb),
|
|---|
| 668 | 'c n' => chr(0xc5).chr(0x86),
|
|---|
| 669 | 'c N' => chr(0xc5).chr(0x85),
|
|---|
| 670 | 'c r' => chr(0xc5).chr(0x97),
|
|---|
| 671 | 'c R' => chr(0xc5).chr(0x96),
|
|---|
| 672 | 'c s' => chr(0xc5).chr(0x9f),
|
|---|
| 673 | 'c S' => chr(0xc5).chr(0x9e),
|
|---|
| 674 | 'c t' => chr(0xc5).chr(0xa3),
|
|---|
| 675 | 'c T' => chr(0xc5).chr(0xa2),
|
|---|
| 676 | # double acute / Hungarian accent
|
|---|
| 677 | 'H O' => chr(0xc5).chr(0x90),
|
|---|
| 678 | 'H o' => chr(0xc5).chr(0x91),
|
|---|
| 679 | 'H U' => chr(0xc5).chr(0xb0),
|
|---|
| 680 | 'H u' => chr(0xc5).chr(0xb1),
|
|---|
| 681 |
|
|---|
| 682 | # stroke
|
|---|
| 683 | 'd' => chr(0xc4).chr(0x91),
|
|---|
| 684 | 'D' => chr(0xc4).chr(0x90),
|
|---|
| 685 | 'h' => chr(0xc4).chr(0xa7),
|
|---|
| 686 | # 'H' => chr(0xc4).chr(0xa6), # !! this normally(!!?) means Hung. umlaut
|
|---|
| 687 | 'i' => chr(0xc4).chr(0xb1), # dotless lowercase i
|
|---|
| 688 | 'l' => chr(0xc5).chr(0x82),
|
|---|
| 689 | 'L' => chr(0xc5).chr(0x81),
|
|---|
| 690 | 'o' => chr(0xc3).chr(0xb8),
|
|---|
| 691 | 'O' => chr(0xc3).chr(0x98),
|
|---|
| 692 | 't' => chr(0xc5).chr(0xa7),
|
|---|
| 693 | 'T' => chr(0xc5).chr(0xa6),
|
|---|
| 694 | # german ss/szlig/sharp s
|
|---|
| 695 | 'ss' => chr(0xc3).chr(0x9f),
|
|---|
| 696 | );
|
|---|
| 697 |
|
|---|
| 698 | # convert latex-style accented characters.
|
|---|
| 699 |
|
|---|
| 700 | # remove space (if any) between \ and letter to accent (eg {\' a})
|
|---|
| 701 |
|
|---|
| 702 | $text =~ s@(\\[`'="^~\.])\s(\w)@$1$2@g; #`
|
|---|
| 703 |
|
|---|
| 704 | # remove {} around a single character (eg \'{e})
|
|---|
| 705 | $text =~ s@(\\[`'="^~\.]){(\w)}@{$1$2}@g; #`
|
|---|
| 706 |
|
|---|
| 707 | # \, is another way of doing cedilla \c
|
|---|
| 708 | $text =~ s@\\,(.)@\\c $1@g;
|
|---|
| 709 |
|
|---|
| 710 | # remove {} around a single character for special 1 letter commands -
|
|---|
| 711 | # need to insert a space. Eg \v{s} -> {\v s}
|
|---|
| 712 | $text =~ s@(\\[uvcH]){(\w)}@{$1 $2}@g;
|
|---|
| 713 |
|
|---|
| 714 | # only do if the text contains a '\' character.
|
|---|
| 715 | if ($text =~ m|\\|) {
|
|---|
| 716 | # "normal" accents - ie non-alpha latex tag
|
|---|
| 717 | while ($text =~ m@\\([`'="^~\.])([\w])@) { #`
|
|---|
| 718 | my $tex="$1$2"; my $char="$2";
|
|---|
| 719 | my $replacement=$utf8_chars{$tex};
|
|---|
| 720 | if (!defined($replacement)) {
|
|---|
| 721 | print STDERR "BibTexPlugin: Warning: unknown latex accent \"$tex\" in \"$text\"\n";
|
|---|
| 722 | $replacement=$char;
|
|---|
| 723 | }
|
|---|
| 724 | $text =~ s/\\\Q$tex/$replacement/g;
|
|---|
| 725 | }
|
|---|
| 726 |
|
|---|
| 727 | # where the following letter matters (eg "sm\o rrebr\o d", \ss{})
|
|---|
| 728 | # only do the change if immediately followed by a space, }, {, or \
|
|---|
| 729 | # one letter accents ( + ss)
|
|---|
| 730 | while ($text =~ m@\\([DdhiLlOoTt]|ss)[{}\s\"\\]@) {
|
|---|
| 731 | my $tex=$1;
|
|---|
| 732 | my $replacement=$special_utf8_chars{$tex};
|
|---|
| 733 | if (!defined($replacement)) {
|
|---|
| 734 | print STDERR "BibTexPlugin: Warning: unknown latex accent \"$tex\" in \"$text\"\n";
|
|---|
| 735 | $replacement=$tex;
|
|---|
| 736 | }
|
|---|
| 737 | $text =~ s/\\$tex([{}\s\"\\])/$replacement$1/g;
|
|---|
| 738 |
|
|---|
| 739 | }
|
|---|
| 740 |
|
|---|
| 741 | # one letter latex accent commands that affect following letter
|
|---|
| 742 | while ($text =~ m@\\([uvcH]) ([\w])@) {
|
|---|
| 743 | my $tex="$1 $2"; my $char="$2";
|
|---|
| 744 | my $replacement=$special_utf8_chars{$tex};
|
|---|
| 745 | if (!defined($replacement)) {
|
|---|
| 746 | print STDERR "BibTexPlugin: Warning: unknown latex accent \"$tex\" in \"$text\"\n";
|
|---|
| 747 | $replacement=$char;
|
|---|
| 748 | }
|
|---|
| 749 | $text =~ s/\\$tex/$replacement/g;
|
|---|
| 750 | }
|
|---|
| 751 | }
|
|---|
| 752 |
|
|---|
| 753 | # escape html-sensitive characters
|
|---|
| 754 | $text =~ s@&@&@g;
|
|---|
| 755 | $text =~ s@<@<@g;
|
|---|
| 756 | $text =~ s@>@>@g;
|
|---|
| 757 | $text =~ s/''/"/g; # Latex-specific
|
|---|
| 758 | $text =~ s/``/"/g; # Latex-specific
|
|---|
| 759 | # greenstone-specific
|
|---|
| 760 | $text =~ s@\[@&\#91;@g;
|
|---|
| 761 | $text =~ s@\]@&\#93;@g;
|
|---|
| 762 |
|
|---|
| 763 | # remove latex commands
|
|---|
| 764 |
|
|---|
| 765 | # explicitly recognised commands
|
|---|
| 766 | $text =~ s@\\ldots@…@g;
|
|---|
| 767 |
|
|---|
| 768 | # maths mode
|
|---|
| 769 | $text =~ s@\$(.*?)\$@&process_latex_math($1)@ge;
|
|---|
| 770 |
|
|---|
| 771 | # remove all other commands with optional arguments...
|
|---|
| 772 | $text =~ s@\\\w+(\[.*?\])?\s*@@g;
|
|---|
| 773 | # $text =~ s@\\noopsort{[^}]+\}@@g;
|
|---|
| 774 | # $text =~ s@\\\w+{(([^}]*[^\\])*)}@$1@g; # all other commands
|
|---|
| 775 |
|
|---|
| 776 | # remove latex groupings { } (but not \{ or \} )
|
|---|
| 777 | while ($text =~ s/([^\\])[\{\}]/$1/g) {;} # needed for "...}{..."
|
|---|
| 778 | $text =~ s/^\{//; # remove { if first char
|
|---|
| 779 |
|
|---|
| 780 | # latex characters
|
|---|
| 781 | # spaces - nobr space (~), opt break (\-), append ("#" - bibtex only)
|
|---|
| 782 | $text =~ s/([^\\])~+/$1 /g; # non-breaking space "~"
|
|---|
| 783 | # optional break "\-"
|
|---|
| 784 | if ($text =~ m/[^&]\#/) { # concat macros (bibtex) but not HTML codes
|
|---|
| 785 | # the non-macro bits have quotes around them - we just remove quotes
|
|---|
| 786 | $text =~ s/([^&])[\"\#]/$1/g;
|
|---|
| 787 | }
|
|---|
| 788 | # dashes. Convert (m|n)-dash into single dash for html.
|
|---|
| 789 | $text =~ s@\-\-+@\-@g;
|
|---|
| 790 |
|
|---|
| 791 | # quoted { } chars
|
|---|
| 792 | $text =~ s@\\{@{@g;
|
|---|
| 793 | $text =~ s@\\}@}@g;
|
|---|
| 794 |
|
|---|
| 795 | # finally to protect against macro language...
|
|---|
| 796 | $text =~ s@\\@\\\\@g;
|
|---|
| 797 |
|
|---|
| 798 | return $text;
|
|---|
| 799 | }
|
|---|
| 800 |
|
|---|
| 801 |
|
|---|
| 802 | sub process_latex_math {
|
|---|
| 803 | my $text = shift;
|
|---|
| 804 |
|
|---|
| 805 | $text =~ s@\\infty@infinity@g; # or unicode 0x221E...
|
|---|
| 806 | $text =~ s@\^{(.*?)}@<sup>$1</sup>@g; # superscript
|
|---|
| 807 | $text =~ s@\^([^\{])@<sup>$1</sup>@g;
|
|---|
| 808 | $text =~ s@\_{(.*?)}@<sub>$1</sub>@g; # subscript
|
|---|
| 809 | $text =~ s@\_([^\{])@<sub>$1</sub>@g;
|
|---|
| 810 |
|
|---|
| 811 | # put all other command names in italics
|
|---|
| 812 | $text =~ s@\\([\w]+)@<i>$1</i>@g;
|
|---|
| 813 |
|
|---|
| 814 | return $text;
|
|---|
| 815 | }
|
|---|
| 816 |
|
|---|
| 817 | sub add_OID {
|
|---|
| 818 | my $self = shift (@_);
|
|---|
| 819 | my ($doc_obj, $id, $segment_number) = @_;
|
|---|
| 820 |
|
|---|
| 821 | if ( $self->{'key'} eq "default") {
|
|---|
| 822 | $self->SUPER::add_OID(@_);
|
|---|
| 823 | # $doc_obj->set_OID("$id\_$segment_number");
|
|---|
| 824 | } else {
|
|---|
| 825 | $doc_obj->set_OID($self->{'key'});
|
|---|
| 826 | }
|
|---|
| 827 | }
|
|---|
| 828 |
|
|---|
| 829 | 1;
|
|---|
| 830 |
|
|---|
| 831 |
|
|---|
