| 1 | ###########################################################################
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| 2 | #
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| 3 | # BasPlug.pm -- base class for all the import plugins
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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 | package BasPlug;
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| 27 |
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| 28 | eval {require bytes};
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| 29 |
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| 30 | # suppress the annoying "subroutine redefined" warning that various
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| 31 | # plugins cause under perl 5.6
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| 32 | $SIG{__WARN__} = sub {warn($_[0]) unless ($_[0] =~ /Subroutine\s+\S+\sredefined/)};
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| 33 |
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| 34 | use Kea;
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| 35 | use parsargv;
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| 36 | use multiread;
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| 37 | use encodings;
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| 38 | use cnseg;
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| 39 | use acronym;
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| 40 | use textcat;
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| 41 | use doc;
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| 42 | use diagnostics;
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| 43 | use DateExtract;
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| 44 | use ghtml;
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| 45 | use gsprintf;
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| 46 | use printusage;
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| 47 |
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| 48 |
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| 49 | my $unicode_list =
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| 50 | [ { 'name' => "auto",
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| 51 | 'desc' => "{BasPlug.input_encoding.auto}" },
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| 52 | { 'name' => "ascii",
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| 53 | 'desc' => "{BasPlug.input_encoding.ascii}" },
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| 54 | { 'name' => "utf8",
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| 55 | 'desc' => "{BasPlug.input_encoding.utf8}" },
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| 56 | { 'name' => "unicode",
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| 57 | 'desc' => "{BasPlug.input_encoding.unicode}" } ];
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| 58 |
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| 59 | my $arguments =
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| 60 | [ { 'name' => "process_exp",
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| 61 | 'desc' => "{BasPlug.process_exp}",
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| 62 | 'type' => "regexp",
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| 63 | 'deft' => "",
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| 64 | 'reqd' => "no" },
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| 65 | { 'name' => "block_exp",
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| 66 | 'desc' => "{BasPlug.block_exp}",
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| 67 | 'type' => "regexp",
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| 68 | 'deft' => "",
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| 69 | 'reqd' => "no" },
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| 70 | { 'name' => "input_encoding",
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| 71 | 'desc' => "{BasPlug.input_encoding}",
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| 72 | 'type' => "enum",
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| 73 | 'list' => $unicode_list,
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| 74 | 'reqd' => "no" ,
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| 75 | 'deft' => "auto" } ,
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| 76 | { 'name' => "default_encoding",
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| 77 | 'desc' => "{BasPlug.default_encoding}",
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| 78 | 'type' => "enum",
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| 79 | 'list' => $unicode_list,
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| 80 | 'reqd' => "no",
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| 81 | 'deft' => "utf8" },
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| 82 | { 'name' => "extract_language",
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| 83 | 'desc' => "{BasPlug.extract_language}",
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| 84 | 'type' => "flag",
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| 85 | 'reqd' => "no" },
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| 86 | { 'name' => "default_language",
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| 87 | 'desc' => "{BasPlug.default_language}",
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| 88 | 'type' => "language",
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| 89 | 'deft' => "en",
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| 90 | 'reqd' => "no" },
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| 91 | { 'name' => "extract_acronyms",
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| 92 | 'desc' => "{BasPlug.extract_acronyms}",
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| 93 | 'type' => "flag",
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| 94 | 'reqd' => "no" },
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| 95 | { 'name' => "markup_acronyms",
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| 96 | 'desc' => "{BasPlug.markup_acronyms}",
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| 97 | 'type' => "flag",
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| 98 | 'reqd' => "no" },
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| 99 | { 'name' => "first",
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| 100 | 'desc' => "{BasPlug.first}",
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| 101 | 'type' => "string",
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| 102 | 'reqd' => "no" },
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| 103 | { 'name' => "extract_email",
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| 104 | 'desc' => "{BasPlug.extract_email}",
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| 105 | 'type' => "flag",
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| 106 | 'reqd' => "no" },
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| 107 | { 'name' => "extract_historical_years",
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| 108 | 'desc' => "{BasPlug.extract_historical_years}",
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| 109 | 'type' => "flag",
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| 110 | 'reqd' => "no" },
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| 111 | { 'name' => "maximum_year",
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| 112 | 'desc' => "{BasPlug.maximum_year}",
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| 113 | 'type' => "int",
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| 114 | 'deft' => (localtime)[5]+1900,
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| 115 | 'reqd' => "no"},
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| 116 | { 'name' => "maximum_century",
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| 117 | 'desc' => "{BasPlug.maximum_century}",
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| 118 | 'type' => "int",
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| 119 | 'deft' => "-1",
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| 120 | 'reqd' => "no" },
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| 121 | { 'name' => "no_bibliography",
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| 122 | 'desc' => "{BasPlug.no_bibliography}",
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| 123 | 'type' => "flag",
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| 124 | 'reqd' => "no"},
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| 125 | { 'name' => "cover_image",
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| 126 | 'desc' => "{BasPlug.cover_image}",
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| 127 | 'type' => "flag",
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| 128 | 'reqd' => "no" } ];
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| 129 |
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| 130 | my $options = { 'name' => "BasPlug",
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| 131 | 'desc' => "{BasPlug.desc}",
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| 132 | 'abstract' => "yes",
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| 133 | 'inherits' => "no",
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| 134 | 'args' => $arguments };
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| 135 |
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| 136 |
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| 137 | sub gsprintf
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| 138 | {
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| 139 | return &gsprintf::gsprintf(@_);
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| 140 | }
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| 141 |
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| 142 |
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| 143 | sub get_arguments
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| 144 | {
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| 145 | local $self = shift(@_);
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| 146 | local $optionlistref = $self->{'option_list'};
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| 147 | local @optionlist = @$optionlistref;
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| 148 | local $pluginoptions = pop(@$optionlistref);
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| 149 | local $pluginarguments = $pluginoptions->{'args'};
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| 150 | return $pluginarguments;
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| 151 | }
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| 152 |
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| 153 |
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| 154 | sub print_xml_usage
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| 155 | {
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| 156 | local $self = shift(@_);
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| 157 | local $language = shift(@_);
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| 158 |
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| 159 | &PrintUsage::print_xml_header();
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| 160 | $self->print_xml($language);
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| 161 | }
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| 162 |
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| 163 |
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| 164 | sub print_xml
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| 165 | {
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| 166 | local $self = shift(@_);
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| 167 | local $language = shift(@_);
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| 168 |
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| 169 | local $optionlistref = $self->{'option_list'};
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| 170 | local @optionlist = @$optionlistref;
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| 171 | local $pluginoptions = pop(@$optionlistref);
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| 172 | return if (!defined($pluginoptions));
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| 173 |
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| 174 | print STDERR "<PlugInfo>\n";
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| 175 | print STDERR " <Name>$pluginoptions->{'name'}</Name>\n";
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| 176 | print STDERR " <Desc>$pluginoptions->{'desc'}</Desc>\n";
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| 177 | print STDERR " <Abstract>$pluginoptions->{'abstract'}</Abstract>\n";
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| 178 | print STDERR " <Inherits>$pluginoptions->{'inherits'}</Inherits>\n";
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| 179 | print STDERR " <Arguments>\n";
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| 180 | if (defined($pluginoptions->{'args'})) {
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| 181 | &PrintUsage::print_options_xml($language, $pluginoptions->{'args'});
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| 182 | }
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| 183 |
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| 184 | # Recurse up the plugin hierarchy
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| 185 | $self->print_xml($language);
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| 186 |
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| 187 | print STDERR " </Arguments>\n";
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| 188 | print STDERR "</PlugInfo>\n";
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| 189 | }
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| 190 |
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| 191 |
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| 192 | sub print_txt_usage
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| 193 | {
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| 194 | local $self = shift(@_);
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| 195 | local $language = shift(@_);
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| 196 |
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| 197 | # Print the usage message for a plugin (recursively)
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| 198 | local $descoffset = $self->determine_description_offset(0);
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| 199 | $self->print_plugin_usage($language, $descoffset, 1);
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| 200 | }
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| 201 |
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| 202 |
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| 203 | sub determine_description_offset
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| 204 | {
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| 205 | local $self = shift(@_);
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| 206 | local $maxoffset = shift(@_);
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| 207 |
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| 208 | local $optionlistref = $self->{'option_list'};
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| 209 | local @optionlist = @$optionlistref;
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| 210 | local $pluginoptions = pop(@$optionlistref);
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| 211 | return $maxoffset if (!defined($pluginoptions));
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| 212 |
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| 213 | # Find the length of the longest option string of this plugin
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| 214 | local $pluginargs = $pluginoptions->{'args'};
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| 215 | if (defined($pluginargs)) {
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| 216 | local $longest = &PrintUsage::find_longest_option_string($pluginargs);
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| 217 | if ($longest > $maxoffset) {
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| 218 | $maxoffset = $longest;
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| 219 | }
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| 220 | }
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| 221 |
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| 222 | # Recurse up the plugin hierarchy
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| 223 | $maxoffset = $self->determine_description_offset($maxoffset);
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| 224 | $self->{'option_list'} = \@optionlist;
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| 225 | return $maxoffset;
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| 226 | }
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| 227 |
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| 228 |
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| 229 | sub print_plugin_usage
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| 230 | {
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| 231 | local $self = shift(@_);
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| 232 | local $language = shift(@_);
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| 233 | local $descoffset = shift(@_);
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| 234 | local $isleafclass = shift(@_);
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| 235 |
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| 236 | local $optionlistref = $self->{'option_list'};
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| 237 | local @optionlist = @$optionlistref;
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| 238 | local $pluginoptions = pop(@$optionlistref);
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| 239 | return if (!defined($pluginoptions));
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| 240 |
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| 241 | local $pluginname = $pluginoptions->{'name'};
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| 242 | local $pluginargs = $pluginoptions->{'args'};
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| 243 |
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| 244 | # Produce the usage information using the data structure above
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| 245 | if ($isleafclass) {
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| 246 | &gsprintf(STDERR, " {common.usage}: plugin $pluginname [{common.options}]\n\n");
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| 247 | # print STDERR " usage: classify $classifiername [options]\n\n";
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| 248 | }
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| 249 |
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| 250 | # Display the plugin options, if there are some
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| 251 | if (defined($pluginargs)) {
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| 252 | # Calculate the column offset of the option descriptions
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| 253 | local $optiondescoffset = $descoffset + 2; # 2 spaces between options & descriptions
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| 254 |
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| 255 | if ($isleafclass) {
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| 256 | &gsprintf(STDERR, " {common.specific_options}:\n");
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| 257 | # print STDERR " specific options:\n";
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| 258 | }
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| 259 | else {
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| 260 | &gsprintf(STDERR, " {common.general_options}:\n", $pluginname);
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| 261 | # print STDERR " general options (from $classifiername):\n";
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| 262 | }
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| 263 |
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| 264 | # Display the plugin options
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| 265 | &PrintUsage::print_options_txt($language, $pluginargs, $optiondescoffset);
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| 266 | }
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| 267 |
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| 268 | # Recurse up the plugin hierarchy
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| 269 | $self->print_plugin_usage($language, $descoffset, 0);
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| 270 | $self->{'option_list'} = \@optionlist;
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| 271 | }
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| 272 |
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| 273 |
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| 274 | # sub print_general_usage {
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| 275 | # my ($plugin_name) = @_;
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| 276 |
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| 277 | # print STDERR "\n usage: plugin $plugin_name [options]\n\n";
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| 278 |
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| 279 | # print STDERR " -process_exp A perl regular expression to match against filenames.\n";
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| 280 | # print STDERR " Matching filenames will be processed by this plugin.\n";
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| 281 | # print STDERR " Each plugin has its own default process_exp. e.g HTMLPlug\n";
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| 282 | # print STDERR " defaults to '(?i)\.html?\$' i.e. all documents ending in\n";
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| 283 | # print STDERR " .htm or .html (case-insensitive).\n\n";
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| 284 |
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| 285 | # print STDERR " -block_exp Files matching this regular expression will be blocked from\n";
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| 286 | # print STDERR " being passed to any later plugins in the list. This has no\n";
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| 287 | # print STDERR " real effect other than to prevent lots of warning messages\n";
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| 288 | # print STDERR " about input files you don't care about. Each plugin might\n";
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| 289 | # print STDERR " have a default block_exp. e.g. by default HTMLPlug blocks\n";
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| 290 | # print STDERR " any files with .gif, .jpg, .jpeg, .png or .css\n";
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| 291 | # print STDERR " file extensions.\n\n";
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| 292 |
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| 293 |
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| 294 | # print STDERR " -input_encoding The encoding of the source documents. Documents will be\n";
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| 295 | # print STDERR " converted from these encodings and stored internally as\n";
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| 296 | # print STDERR " utf8. The default input_encoding is 'auto'. Accepted values\n";
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| 297 | # print STDERR " are:\n";
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| 298 |
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| 299 | # print STDERR " auto: Use text categorization algorithm to automatically\n";
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| 300 | # print STDERR " identify the encoding of each source document. This\n";
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| 301 | # print STDERR " will be slower than explicitly setting the encoding\n";
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| 302 | # print STDERR " but will work where more than one encoding is used\n";
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| 303 | # print STDERR " within the same collection.\n";
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| 304 |
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| 305 | # print STDERR " ascii: Plain 7 bit ascii. This may be a bit faster than\n";
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| 306 | # print STDERR " using iso_8859_1. Beware of using this on a collection\n";
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| 307 | # print STDERR " of documents that may contain characters outside the\n";
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| 308 | # print STDERR " plain 7 bit ascii set though (e.g. German or French\n";
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| 309 | # print STDERR " documents containing accents), use iso_8859_1 instead.\n";
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| 310 |
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| 311 | # print STDERR " utf8: either utf8 or unicode -- automatically detected\n";
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| 312 | # print STDERR " unicode: just unicode\n";
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| 313 |
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| 314 | # my $e = $encodings::encodings;
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| 315 | # foreach my $enc (sort {$e->{$a}->{'name'} cmp $e->{$b}->{'name'}} keys (%$e)) {
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| 316 | # print STDERR " $enc: $e->{$enc}->{'name'}\n";
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| 317 | # }
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| 318 | # print STDERR "\n";
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| 319 | # print STDERR " -default_encoding Use this encoding if -input_encoding is set to 'auto' and\n";
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| 320 | # print STDERR " the text categorization algorithm fails to extract the\n";
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| 321 | # print STDERR " encoding or extracts an encoding unsupported by Greenstone.\n";
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| 322 | # print STDERR " The default is iso_8859_1.\n\n";
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| 323 |
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| 324 | # print STDERR " -extract_language Identify the language of each document and set 'Language'\n";
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| 325 | # print STDERR " metadata. Note that this will be done automatically if\n";
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| 326 | # print STDERR " -input_encoding is 'auto'.\n\n";
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| 327 | # print STDERR " -default_language If Greenstone fails to work out what language a document is\n";
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| 328 | # print STDERR " the 'Language' metadata element will be set to this value.\n";
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| 329 | # print STDERR " The default is 'en' (ISO 639 language symbols are used:\n";
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| 330 | # print STDERR " en = English). Note that if -input_encoding is not set to\n";
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| 331 | # print STDERR " 'auto' and -extract_language is not set, all documents will\n";
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| 332 | # print STDERR " have their 'Language' metadata set to this value.\n\n";
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| 333 |
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| 334 | # print STDERR " -extract_acronyms Extract acronyms from within text and set as metadata\n";
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| 335 |
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| 336 | # print STDERR " -markup_acronyms Add acronym metadata into document text\n\n";
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| 337 |
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| 338 | # print STDERR " -first Comma separated list of first sizes to extract from the\n";
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| 339 | # print STDERR " text into a metadata field. The field is called 'FirstNNN'.\n\n";
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| 340 |
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| 341 | # print STDERR " -extract_email Extract email addresses as metadata\n\n";
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| 342 |
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| 343 | # print STDERR " -extract_historical_years Extract time-period information from historical\n";
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| 344 | # print STDERR " documents. This is stored as metadata with the document.\n";
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| 345 | # print STDERR " There is a search interface for this metadata, which you \n";
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| 346 | # print STDERR " can include in your collection by adding the statement:\n";
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| 347 | # print STDERR " format QueryInterface DateSearch\n";
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| 348 | # print STDERR " to your collection configuration file\n";
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| 349 | # print STDERR " -maximum_year The maximum historical date to be used as metadata (in a\n";
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| 350 | # print STDERR " Common Era date, such as 1950)\n";
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| 351 | # print STDERR " -maximum_century The maximum named century to be extracted as historical\n";
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| 352 | # print STDERR " metadata (e.g. 14 will extract all references up to the\n";
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| 353 | # print STDERR " 14th century)\n";
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| 354 | # print STDERR " -no_bibliography Do not try and block bibliographic dates when extracting\n";
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| 355 | # print STDERR " historical dates.\n";
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| 356 | # print STDERR " -cover_image Will look for a prefix.jpg file (where prefix is the same\n";
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| 357 | # print STDERR " prefix as the file being processed) and associate it as a\n";
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| 358 | # print STDERR " cover image\n\n";
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| 359 | # }
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| 360 |
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| 361 | # sub print_usage {
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| 362 | # print STDERR "\nThis plugin has no plugin specific options\n\n";
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| 363 | # }
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| 364 |
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| 365 | sub new {
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| 366 | my $class = shift (@_);
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| 367 | my $plugin_name = shift (@_);
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| 368 | my $self = {};
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| 369 | $self->{'plugin_type'} = "BasPlug";
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| 370 | my $enc = "^(";
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| 371 | map {$enc .= "$_|";} keys %$encodings::encodings;
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| 372 | my $denc = $enc . "ascii|utf8|unicode)\$";
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| 373 | $enc .= "ascii|utf8|unicode|auto)\$";
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| 374 |
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| 375 | $self->{'outhandle'} = STDERR;
|
|---|
| 376 | my $year = (localtime)[5]+1900;
|
|---|
| 377 |
|
|---|
| 378 | $self->{'textcat'} = new textcat();
|
|---|
| 379 |
|
|---|
| 380 | $self->{'num_processed'} = 0;
|
|---|
| 381 | $self->{'num_not_processed'} = 0;
|
|---|
| 382 | $self->{'num_blocked'} = 0;
|
|---|
| 383 | $self->{'num_archives'} = 0;
|
|---|
| 384 |
|
|---|
| 385 | # 14-05-02 To allow for proper inheritance of arguments - John Thompson
|
|---|
| 386 | $self->{'option_list'} = [ $options ];
|
|---|
| 387 |
|
|---|
| 388 | # general options available to all plugins
|
|---|
| 389 | if (!parsargv::parse(\@_,
|
|---|
| 390 | q^process_exp/.*/^, \$self->{'process_exp'},
|
|---|
| 391 | q^block_exp/.*/^, \$self->{'block_exp'},
|
|---|
| 392 | q^extract_language^, \$self->{'extract_language'},
|
|---|
| 393 | q^extract_acronyms^, \$self->{'extract_acronyms'},
|
|---|
| 394 | q^extract_keyphrases^, \$self->{'kea'}, #with extra options (UNDOCUMENTED)
|
|---|
| 395 | q^extract_keyphrase_options/.*/^, \$self->{'kea_options'}, #no extra options (UNDOCUMENTED)
|
|---|
| 396 | qq^input_encoding/$enc/auto^, \$self->{'input_encoding'},
|
|---|
| 397 | qq^default_encoding/$denc/utf8^, \$self->{'default_encoding'},
|
|---|
| 398 | q^extract_email^, \$self->{'extract_email'},
|
|---|
| 399 | q^markup_acronyms^, \$self->{'markup_acronyms'},
|
|---|
| 400 | q^default_language/.{2}/en^, \$self->{'default_language'},
|
|---|
| 401 | q^first/.*/^, \$self->{'first'},
|
|---|
| 402 | q^extract_historical_years^, \$self->{'date_extract'},
|
|---|
| 403 | qq^maximum_year/\\d{4}/$year^, \$self->{'max_year'},
|
|---|
| 404 | q^no_bibliography^, \$self->{'no_biblio'},
|
|---|
| 405 | qq^maximum_century/-?\\d{1,2}( ?B\\.C\\.E\\.)?/-1^, \$self->{'max_century'},
|
|---|
| 406 | q^cover_image^, \$self->{'cover_image'},
|
|---|
| 407 | "allow_extra_options")) {
|
|---|
| 408 |
|
|---|
| 409 | &gsprintf(STDERR, "\n{BasPlug.bad_general_option}\n", $plugin_name);
|
|---|
| 410 | $self->print_txt_usage(""); # Use default resource bundle
|
|---|
| 411 | die "\n";
|
|---|
| 412 | }
|
|---|
| 413 |
|
|---|
| 414 | return bless $self, $class;
|
|---|
| 415 | }
|
|---|
| 416 |
|
|---|
| 417 | # initialize BasPlug options
|
|---|
| 418 | # if init() is overridden in a sub-class, remember to call BasPlug::init()
|
|---|
| 419 | sub init {
|
|---|
| 420 | my $self = shift (@_);
|
|---|
| 421 | my ($verbosity, $outhandle, $failhandle) = @_;
|
|---|
| 422 |
|
|---|
| 423 | # verbosity is passed through from the processor
|
|---|
| 424 | $self->{'verbosity'} = $verbosity;
|
|---|
| 425 |
|
|---|
| 426 | # as are the outhandle and failhandle
|
|---|
| 427 | $self->{'outhandle'} = $outhandle if defined $outhandle;
|
|---|
| 428 | $self->{'failhandle'} = $failhandle;
|
|---|
| 429 |
|
|---|
| 430 | # set process_exp and block_exp to defaults unless they were
|
|---|
| 431 | # explicitly set
|
|---|
| 432 |
|
|---|
| 433 | if ((!$self->is_recursive()) and
|
|---|
| 434 | (!defined $self->{'process_exp'}) || ($self->{'process_exp'} eq "")) {
|
|---|
| 435 |
|
|---|
| 436 | $self->{'process_exp'} = $self->get_default_process_exp ();
|
|---|
| 437 | if ($self->{'process_exp'} eq "") {
|
|---|
| 438 | warn ref($self) . " Warning: Non-recursive plugin has no process_exp\n";
|
|---|
| 439 | }
|
|---|
| 440 | }
|
|---|
| 441 |
|
|---|
| 442 | if ((!defined $self->{'block_exp'}) || ($self->{'block_exp'} eq "")) {
|
|---|
| 443 | $self->{'block_exp'} = $self->get_default_block_exp ();
|
|---|
| 444 | }
|
|---|
| 445 | }
|
|---|
| 446 |
|
|---|
| 447 | sub begin {
|
|---|
| 448 | my $self = shift (@_);
|
|---|
| 449 | my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
|
|---|
| 450 | $self->initialise_extractors();
|
|---|
| 451 | }
|
|---|
| 452 |
|
|---|
| 453 | sub end {
|
|---|
| 454 | my ($self) = @_;
|
|---|
| 455 | $self->finalise_extractors();
|
|---|
| 456 | }
|
|---|
| 457 |
|
|---|
| 458 | # this function should be overridden to return 1
|
|---|
| 459 | # in recursive plugins
|
|---|
| 460 | sub is_recursive {
|
|---|
| 461 | my $self = shift (@_);
|
|---|
| 462 |
|
|---|
| 463 | return 0;
|
|---|
| 464 | }
|
|---|
| 465 |
|
|---|
| 466 | sub get_default_block_exp {
|
|---|
| 467 | my $self = shift (@_);
|
|---|
| 468 |
|
|---|
| 469 | return "";
|
|---|
| 470 | }
|
|---|
| 471 |
|
|---|
| 472 | sub get_default_process_exp {
|
|---|
| 473 | my $self = shift (@_);
|
|---|
| 474 |
|
|---|
| 475 | return "";
|
|---|
| 476 | }
|
|---|
| 477 |
|
|---|
| 478 | # The BasPlug read() function. This function does all the right things
|
|---|
| 479 | # to make general options work for a given plugin. It calls the process()
|
|---|
| 480 | # function which does all the work specific to a plugin (like the old
|
|---|
| 481 | # read functions used to do). Most plugins should define their own
|
|---|
| 482 | # process() function and let this read() function keep control.
|
|---|
| 483 | #
|
|---|
| 484 | # recursive plugins (e.g. RecPlug) and specialized plugins like those
|
|---|
| 485 | # capable of processing many documents within a single file (e.g.
|
|---|
| 486 | # GMLPlug) should normally implement their own version of read()
|
|---|
| 487 | #
|
|---|
| 488 | # Return number of files processed, undef if can't process
|
|---|
| 489 | # Note that $base_dir might be "" and that $file might
|
|---|
| 490 | # include directories
|
|---|
| 491 |
|
|---|
| 492 | sub read {
|
|---|
| 493 | my $self = shift (@_);
|
|---|
| 494 |
|
|---|
| 495 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $gli) = @_;
|
|---|
| 496 |
|
|---|
| 497 | if ($self->is_recursive()) {
|
|---|
| 498 | &gsprintf(STDERR, "{BasPlug.read_must_be_implemented}") && die "\n";
|
|---|
| 499 | }
|
|---|
| 500 |
|
|---|
| 501 | my $outhandle = $self->{'outhandle'};
|
|---|
| 502 |
|
|---|
| 503 | my $filename = $file;
|
|---|
| 504 | $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
|
|---|
| 505 |
|
|---|
| 506 | if ($self->{'block_exp'} ne "" && $filename =~ /$self->{'block_exp'}/) {
|
|---|
| 507 | $self->{'num_blocked'} ++;
|
|---|
| 508 | return 0;
|
|---|
| 509 | }
|
|---|
| 510 | if ($filename !~ /$self->{'process_exp'}/ || !-f $filename) {
|
|---|
| 511 | return undef;
|
|---|
| 512 | }
|
|---|
| 513 | $file =~ s/^[\/\\]+//; # $file often begins with / so we'll tidy it up
|
|---|
| 514 |
|
|---|
| 515 | # Do encoding stuff
|
|---|
| 516 | my ($language, $encoding) = $self->textcat_get_language_encoding ($filename);
|
|---|
| 517 |
|
|---|
| 518 | # create a new document
|
|---|
| 519 | my $doc_obj = new doc ($filename, "indexed_doc");
|
|---|
| 520 | $doc_obj->set_OIDtype ($processor->{'OIDtype'});
|
|---|
| 521 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Language", $language);
|
|---|
| 522 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Encoding", $encoding);
|
|---|
| 523 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "$self->{'plugin_type'}", "1");
|
|---|
| 524 | my ($filemeta) = $file =~ /([^\\\/]+)$/;
|
|---|
| 525 | # how do we know what encoding the filename is in?
|
|---|
| 526 | $doc_obj->add_metadata($doc_obj->get_top_section(), "Source", &ghtml::dmsafe($filemeta));
|
|---|
| 527 | if ($self->{'cover_image'}) {
|
|---|
| 528 | $self->associate_cover_image($doc_obj, $filename);
|
|---|
| 529 | }
|
|---|
| 530 |
|
|---|
| 531 | # read in file ($text will be in utf8)
|
|---|
| 532 | my $text = "";
|
|---|
| 533 | $self->read_file ($filename, $encoding, $language, \$text);
|
|---|
| 534 |
|
|---|
| 535 | if (!length ($text)) {
|
|---|
| 536 | my $plugin_name = ref ($self);
|
|---|
| 537 | &gsprintf($outhandle, "$plugin_name: {BasPlug.file_has_no_text}\n", $filename) if $self->{'verbosity'};
|
|---|
| 538 |
|
|---|
| 539 | my $failhandle = $self->{'failhandle'};
|
|---|
| 540 | &gsprintf($failhandle, "$file: " . ref($self) . ": {BasPlug.empty_file}\n");
|
|---|
| 541 | # print $failhandle "$file: " . ref($self) . ": file contains no text\n";
|
|---|
| 542 | $self->{'num_not_processed'} ++;
|
|---|
| 543 |
|
|---|
| 544 | return 0;
|
|---|
| 545 | }
|
|---|
| 546 |
|
|---|
| 547 | # include any metadata passed in from previous plugins
|
|---|
| 548 | # note that this metadata is associated with the top level section
|
|---|
| 549 | $self->extra_metadata ($doc_obj, $doc_obj->get_top_section(), $metadata);
|
|---|
| 550 |
|
|---|
| 551 | # do plugin specific processing of doc_obj
|
|---|
| 552 | return undef unless defined ($self->process (\$text, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli));
|
|---|
| 553 |
|
|---|
| 554 | # do any automatic metadata extraction
|
|---|
| 555 | $self->auto_extract_metadata ($doc_obj);
|
|---|
| 556 |
|
|---|
| 557 | # add an OID
|
|---|
| 558 | # see if there is a plugin-specific set_OID function...
|
|---|
| 559 | if (defined ($self->can(set_OID))) {
|
|---|
| 560 | # it will need $doc_obj to set the Identifier metadata...
|
|---|
| 561 | $self->set_OID($doc_obj);
|
|---|
| 562 | } else {
|
|---|
| 563 | # use the default set_OID() in doc.pm
|
|---|
| 564 | $doc_obj->set_OID();
|
|---|
| 565 | }
|
|---|
| 566 |
|
|---|
| 567 | # process the document
|
|---|
| 568 | $processor->process($doc_obj);
|
|---|
| 569 |
|
|---|
| 570 | $self->{'num_processed'} ++;
|
|---|
| 571 |
|
|---|
| 572 | return 1; # processed the file
|
|---|
| 573 | }
|
|---|
| 574 |
|
|---|
| 575 | # returns undef if file is rejected by the plugin
|
|---|
| 576 | sub process {
|
|---|
| 577 | my $self = shift (@_);
|
|---|
| 578 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj) = @_;
|
|---|
| 579 |
|
|---|
| 580 | &gsprintf(STDERR, "BasPlug::process {common.must_be_implemented}\n") && die "\n";
|
|---|
| 581 | # die "Basplug::process function must be implemented in sub-class\n";
|
|---|
| 582 |
|
|---|
| 583 | return undef; # never gets here
|
|---|
| 584 | }
|
|---|
| 585 |
|
|---|
| 586 | # uses the multiread package to read in the entire file pointed to
|
|---|
| 587 | # by filename and loads the resulting text into $$textref. Input text
|
|---|
| 588 | # may be in any of the encodings handled by multiread, output text
|
|---|
| 589 | # will be in utf8
|
|---|
| 590 | sub read_file {
|
|---|
| 591 | my $self = shift (@_);
|
|---|
| 592 | my ($filename, $encoding, $language, $textref) = @_;
|
|---|
| 593 |
|
|---|
| 594 | if (!-r $filename)
|
|---|
| 595 | {
|
|---|
| 596 | my $outhandle = $self->{'outhandle'};
|
|---|
| 597 | &gsprintf($outhandle, "{BasPlug.read_denied}\n", $filename) if $self->{'verbosity'};
|
|---|
| 598 | # print $outhandle "Read permission denied for $filename\n" if $self->{'verbosity'};
|
|---|
| 599 | return;
|
|---|
| 600 | }
|
|---|
| 601 |
|
|---|
| 602 | $$textref = "";
|
|---|
| 603 |
|
|---|
| 604 | open (FILE, $filename) || (&gsprintf(STDERR, "BasPlug::read_file {BasPlug.could_not_open_for_reading} ($!)\n", $filename) && die "\n");
|
|---|
| 605 | # open (FILE, $filename) || die "BasPlug::read_file could not open $filename for reading ($!)\n";
|
|---|
| 606 |
|
|---|
| 607 | if ($encoding eq "ascii") {
|
|---|
| 608 | undef $/;
|
|---|
| 609 | $$textref = <FILE>;
|
|---|
| 610 | $/ = "\n";
|
|---|
| 611 | } else {
|
|---|
| 612 | my $reader = new multiread();
|
|---|
| 613 | $reader->set_handle ('BasPlug::FILE');
|
|---|
| 614 | $reader->set_encoding ($encoding);
|
|---|
| 615 | $reader->read_file ($textref);
|
|---|
| 616 |
|
|---|
| 617 | if ($language eq "zh") {
|
|---|
| 618 | # segment the Chinese words
|
|---|
| 619 | $$textref = &cnseg::segment($$textref);
|
|---|
| 620 | }
|
|---|
| 621 | }
|
|---|
| 622 |
|
|---|
| 623 | close FILE;
|
|---|
| 624 | }
|
|---|
| 625 |
|
|---|
| 626 | sub textcat_get_language_encoding {
|
|---|
| 627 | my $self = shift (@_);
|
|---|
| 628 | my ($filename) = @_;
|
|---|
| 629 |
|
|---|
| 630 | my ($language, $encoding, $extracted_encoding);
|
|---|
| 631 | if ($self->{'input_encoding'} eq "auto") {
|
|---|
| 632 | # use textcat to automatically work out the input encoding and language
|
|---|
| 633 | ($language, $encoding) = $self->get_language_encoding ($filename);
|
|---|
| 634 | } elsif ($self->{'extract_language'}) {
|
|---|
| 635 | # use textcat to get language metadata
|
|---|
| 636 | ($language, $extracted_encoding) = $self->get_language_encoding ($filename);
|
|---|
| 637 | $encoding = $self->{'input_encoding'};
|
|---|
| 638 | if ($extracted_encoding ne $encoding && $self->{'verbosity'}) {
|
|---|
| 639 | my $plugin_name = ref ($self);
|
|---|
| 640 | my $outhandle = $self->{'outhandle'};
|
|---|
| 641 | &gsprintf($outhandle, "$plugin_name: {BasPlug.wrong_encoding}\n", $filename, $encoding, $extracted_encoding);
|
|---|
| 642 | # print $outhandle "$plugin_name: WARNING: $filename was read using $encoding encoding but ";
|
|---|
| 643 | # print $outhandle "appears to be encoded as $extracted_encoding.\n";
|
|---|
| 644 | }
|
|---|
| 645 | } else {
|
|---|
| 646 | $language = $self->{'default_language'};
|
|---|
| 647 | $encoding = $self->{'input_encoding'};
|
|---|
| 648 | }
|
|---|
| 649 | return ($language, $encoding);
|
|---|
| 650 | }
|
|---|
| 651 |
|
|---|
| 652 | # Uses textcat to work out the encoding and language of the text in
|
|---|
| 653 | # $filename. All html tags are removed before processing.
|
|---|
| 654 | # returns an array containing "language" and "encoding"
|
|---|
| 655 | sub get_language_encoding {
|
|---|
| 656 | my $self = shift (@_);
|
|---|
| 657 | my ($filename) = @_;
|
|---|
| 658 | my $outhandle = $self->{'outhandle'};
|
|---|
| 659 |
|
|---|
| 660 | # read in file
|
|---|
| 661 | open (FILE, $filename) || (&gsprintf(STDERR, "BasPlug::get_language_encoding {BasPlug.could_not_open_for_reading} ($!)\n", $filename) && die "\n"); # die "BasPlug::get_language_encoding could not open $filename for reading ($!)\n";
|
|---|
| 662 | undef $/;
|
|---|
| 663 | my $text = <FILE>;
|
|---|
| 664 | $/ = "\n";
|
|---|
| 665 | close FILE;
|
|---|
| 666 |
|
|---|
| 667 | # remove <title>stuff</title> -- as titles tend often to be in English
|
|---|
| 668 | # for foreign language documents
|
|---|
| 669 | $text =~ s/<title>.*?<\/title>//i;
|
|---|
| 670 |
|
|---|
| 671 | # remove all HTML tags
|
|---|
| 672 | $text =~ s/<[^>]*>//sg;
|
|---|
| 673 |
|
|---|
| 674 | # get the language/encoding
|
|---|
| 675 | my $results = $self->{'textcat'}->classify(\$text);
|
|---|
| 676 |
|
|---|
| 677 | # if textcat returns 3 or less possibilities we'll use the
|
|---|
| 678 | # first one in the list - otherwise use the defaults
|
|---|
| 679 | if (scalar @$results > 3) {
|
|---|
| 680 | # changed 12 Feb 2003 by jrm21
|
|---|
| 681 | # use the most popular encoding at least... otherwise we might
|
|---|
| 682 | # generate invalid archive files!
|
|---|
| 683 | my %guessed_encodings = ();
|
|---|
| 684 | foreach my $result (@$results) {
|
|---|
| 685 | $result =~ /([^\-]+)$/;
|
|---|
| 686 | my $enc=$1;
|
|---|
| 687 | if (!defined($guessed_encodings{$enc})) {
|
|---|
| 688 | $guessed_encodings{$enc}=0;
|
|---|
| 689 | }
|
|---|
| 690 | $guessed_encodings{$enc}++;
|
|---|
| 691 | }
|
|---|
| 692 | my $best_encoding="";
|
|---|
| 693 | $guessed_encodings{""}=-1;
|
|---|
| 694 | foreach my $enc (keys %guessed_encodings) {
|
|---|
| 695 | if ($guessed_encodings{$enc} > $guessed_encodings{$best_encoding}){
|
|---|
| 696 | $best_encoding=$enc;
|
|---|
| 697 | }
|
|---|
| 698 | }
|
|---|
| 699 |
|
|---|
| 700 | if ($self->{'input_encoding'} ne 'auto') {
|
|---|
| 701 | if ($self->{'extract_language'} && $self->{'verbosity'}) {
|
|---|
| 702 | &gsprintf($outhandle, "BasPlug: {BasPlug.could_not_extract_language}\n", $filename, $self->{'default_language'});
|
|---|
| 703 | # print $outhandle "BasPlug: WARNING: language could not be extracted from $filename - ";
|
|---|
| 704 | # print $outhandle "defaulting to $self->{'default_language'}\n";
|
|---|
| 705 | }
|
|---|
| 706 | return ($self->{'default_language'}, $self->{'input_encoding'});
|
|---|
| 707 |
|
|---|
| 708 | } else {
|
|---|
| 709 | if ($self->{'verbosity'}) {
|
|---|
| 710 | &gsprintf($outhandle, "BasPlug: {BasPlug.could_not_extract_language}\n", $filename, $self->{'default_language'});
|
|---|
| 711 | # print $outhandle "BASPlug: WARNING: language could not be extracted from $filename - ";
|
|---|
| 712 | # print $outhandle "defaulting to $self->{'default_language'}.\n";
|
|---|
| 713 | }
|
|---|
| 714 | return ($self->{'default_language'}, $best_encoding);
|
|---|
| 715 | }
|
|---|
| 716 | }
|
|---|
| 717 |
|
|---|
| 718 | # format language/encoding
|
|---|
| 719 | my ($language, $encoding) = $results->[0] =~ /^([^-]*)(?:-(.*))?$/;
|
|---|
| 720 | if (!defined $language) {
|
|---|
| 721 | if ($self->{'verbosity'}) {
|
|---|
| 722 | &gsprintf($outhandle, "BasPlug: {BasPlug.could_not_extract_language}\n", $filename, $self->{'default_language'});
|
|---|
| 723 | # print $outhandle "BasPlug: WARNING: language could not be extracted from $filename - ";
|
|---|
| 724 | # print $outhandle "defaulting to $self->{'default_language'}\n";
|
|---|
| 725 | }
|
|---|
| 726 | $language = $self->{'default_language'};
|
|---|
| 727 | }
|
|---|
| 728 | if (!defined $encoding) {
|
|---|
| 729 | if ($self->{'verbosity'}) {
|
|---|
| 730 | &gsprintf($outhandle, "BasPlug: {BasPlug.could_not_extract_encoding}\n", $filename, $self->{'default_encoding'});
|
|---|
| 731 | # print $outhandle "BasPlug: WARNING: encoding could not be extracted from $filename - ";
|
|---|
| 732 | # print $outhandle "defaulting to $self->{'default_encoding'}\n";
|
|---|
| 733 | }
|
|---|
| 734 | $encoding = $self->{'default_encoding'};
|
|---|
| 735 | }
|
|---|
| 736 |
|
|---|
| 737 | if ($encoding !~ /^(ascii|utf8|unicode)$/ &&
|
|---|
| 738 | !defined $encodings::encodings->{$encoding}) {
|
|---|
| 739 | if ($self->{'verbosity'}) {
|
|---|
| 740 | &gsprintf($outhandle, "BasPlug: {BasPlug.unsupported_encoding}\n", $filename, $encoding, $self->{'default_encoding'});
|
|---|
| 741 | # print $outhandle "BasPlug: WARNING: $filename appears to be encoded in an unsupported encoding ($encoding) - ";
|
|---|
| 742 | # print $outhandle "using $self->{'default_encoding'}\n";
|
|---|
| 743 | }
|
|---|
| 744 | $encoding = $self->{'default_encoding'};
|
|---|
| 745 | }
|
|---|
| 746 |
|
|---|
| 747 | return ($language, $encoding);
|
|---|
| 748 | }
|
|---|
| 749 |
|
|---|
| 750 | # add any extra metadata that's been passed around from one
|
|---|
| 751 | # plugin to another.
|
|---|
| 752 | # extra_metadata uses add_utf8_metadata so it expects metadata values
|
|---|
| 753 | # to already be in utf8
|
|---|
| 754 | sub extra_metadata {
|
|---|
| 755 | my $self = shift (@_);
|
|---|
| 756 | my ($doc_obj, $cursection, $metadata) = @_;
|
|---|
| 757 |
|
|---|
| 758 | foreach my $field (keys(%$metadata)) {
|
|---|
| 759 | # $metadata->{$field} may be an array reference
|
|---|
| 760 | if (ref ($metadata->{$field}) eq "ARRAY") {
|
|---|
| 761 | map {
|
|---|
| 762 | $doc_obj->add_utf8_metadata ($cursection, $field, $_);
|
|---|
| 763 | } @{$metadata->{$field}};
|
|---|
| 764 | } else {
|
|---|
| 765 | $doc_obj->add_utf8_metadata ($cursection, $field, $metadata->{$field});
|
|---|
| 766 | }
|
|---|
| 767 | }
|
|---|
| 768 | }
|
|---|
| 769 |
|
|---|
| 770 | # initialise metadata extractors
|
|---|
| 771 | sub initialise_extractors {
|
|---|
| 772 | my $self = shift (@_);
|
|---|
| 773 |
|
|---|
| 774 | if ($self->{'extract_acronyms'} || $self->{'markup_acronyms'}) {
|
|---|
| 775 | &acronym::initialise_acronyms();
|
|---|
| 776 | }
|
|---|
| 777 | }
|
|---|
| 778 |
|
|---|
| 779 | # finalise metadata extractors
|
|---|
| 780 | sub finalise_extractors {
|
|---|
| 781 | my $self = shift (@_);
|
|---|
| 782 |
|
|---|
| 783 | if ($self->{'extract_acronyms'} || $self->{'markup_acronyms'}) {
|
|---|
| 784 | &acronym::finalise_acronyms();
|
|---|
| 785 | }
|
|---|
| 786 | }
|
|---|
| 787 |
|
|---|
| 788 | # FIRSTNNN: extract the first NNN characters as metadata
|
|---|
| 789 | sub extract_first_NNNN_characters {
|
|---|
| 790 | my $self = shift (@_);
|
|---|
| 791 | my ($textref, $doc_obj, $thissection) = @_;
|
|---|
| 792 |
|
|---|
| 793 | foreach my $size (split /,/, $self->{'first'}) {
|
|---|
| 794 | my $tmptext = $$textref;
|
|---|
| 795 | $tmptext =~ s/^\s+//;
|
|---|
| 796 | $tmptext =~ s/\s+$//;
|
|---|
| 797 | $tmptext =~ s/\s+/ /gs;
|
|---|
| 798 | $tmptext = substr ($tmptext, 0, $size);
|
|---|
| 799 | $tmptext =~ s/\s\S*$/…/;
|
|---|
| 800 | $doc_obj->add_utf8_metadata ($thissection, "First$size", $tmptext);
|
|---|
| 801 | }
|
|---|
| 802 | }
|
|---|
| 803 |
|
|---|
| 804 | sub extract_email {
|
|---|
| 805 | my $self = shift (@_);
|
|---|
| 806 | my ($textref, $doc_obj, $thissection) = @_;
|
|---|
| 807 | my $outhandle = $self->{'outhandle'};
|
|---|
| 808 |
|
|---|
| 809 | # print $outhandle " extracting email addresses ...\n"
|
|---|
| 810 | &gsprintf($outhandle, " {BasPlug.extracting_emails}...\n")
|
|---|
| 811 | if ($self->{'verbosity'} > 2);
|
|---|
| 812 |
|
|---|
| 813 | my @email = ($$textref =~ m/([-a-z0-9\.@+_=]+@(?:[-a-z0-9]+\.)+(?:com|org|edu|mil|int|net|[a-z][a-z]))/g);
|
|---|
| 814 | @email = sort @email;
|
|---|
| 815 |
|
|---|
| 816 | my @email2 = ();
|
|---|
| 817 | foreach my $address (@email) {
|
|---|
| 818 | if (!(join(" ",@email2) =~ m/$address/ )) {
|
|---|
| 819 | push @email2, $address;
|
|---|
| 820 | $doc_obj->add_utf8_metadata ($thissection, "emailAddress", $address);
|
|---|
| 821 | # print $outhandle " extracting $address\n"
|
|---|
| 822 | &gsprintf($outhandle, " {BasPlug.extracting} $address\n")
|
|---|
| 823 | if ($self->{'verbosity'} > 3);
|
|---|
| 824 | }
|
|---|
| 825 | }
|
|---|
| 826 | # print $outhandle " done extracting email addresses.\n"
|
|---|
| 827 | &gsprintf($outhandle, " {BasPlug.done_email_extract}\n")
|
|---|
| 828 | if ($self->{'verbosity'} > 2);
|
|---|
| 829 | }
|
|---|
| 830 |
|
|---|
| 831 | # extract metadata
|
|---|
| 832 | sub auto_extract_metadata {
|
|---|
| 833 |
|
|---|
| 834 | my $self = shift (@_);
|
|---|
| 835 | my ($doc_obj) = @_;
|
|---|
| 836 |
|
|---|
| 837 | if ($self->{'extract_email'}) {
|
|---|
| 838 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 839 | while (defined $thissection) {
|
|---|
| 840 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 841 | $self->extract_email (\$text, $doc_obj, $thissection) if $text =~ /./;
|
|---|
| 842 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 843 | }
|
|---|
| 844 | }
|
|---|
| 845 |
|
|---|
| 846 |
|
|---|
| 847 | #adding kea keyphrases
|
|---|
| 848 | if ($self->{'kea'}) {
|
|---|
| 849 |
|
|---|
| 850 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 851 | my $text = "";
|
|---|
| 852 | my @list;
|
|---|
| 853 |
|
|---|
| 854 | while (defined $thissection) { #loop through sections to gather whole doc
|
|---|
| 855 | my $sectiontext = $doc_obj->get_text($thissection);
|
|---|
| 856 | $text = $text.$sectiontext;
|
|---|
| 857 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 858 | }
|
|---|
| 859 |
|
|---|
| 860 | if($self->{'kea_options'}) { #if kea options flag is set, call Kea with specified options
|
|---|
| 861 | @list = &Kea::extract_KeyPhrases ($text, $self->{'kea_options'});
|
|---|
| 862 | } else { #otherwise call Kea with no options
|
|---|
| 863 | @list = &Kea::extract_KeyPhrases ($text);
|
|---|
| 864 | }
|
|---|
| 865 |
|
|---|
| 866 | if(@list){ #if a list of kea keyphrases was returned (ie not empty)
|
|---|
| 867 | my $keyphrases = $list[0]; #first arg is keyphrase list
|
|---|
| 868 | my $stems = $list[1]; #second arg is stemmed keyphrase list
|
|---|
| 869 | &gsprintf(STDERR, "{BasPlug.keyphrases}: $keyphrases\n");
|
|---|
| 870 | # print STDERR "keyphrases: $keyphrases\n";
|
|---|
| 871 | &gsprintf(STDERR, "{BasPlug.stems}: $stems\n");
|
|---|
| 872 | # print STDERR "stems: $stems\n";
|
|---|
| 873 | $thissection = $doc_obj->get_top_section(); #add metadata to top section
|
|---|
| 874 | $doc_obj->add_metadata($thissection, "kea", $keyphrases);
|
|---|
| 875 | $doc_obj->add_metadata($thissection, "stems", $stems);
|
|---|
| 876 | }
|
|---|
| 877 | } #end of kea
|
|---|
| 878 |
|
|---|
| 879 | if ($self->{'first'}) {
|
|---|
| 880 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 881 | while (defined $thissection) {
|
|---|
| 882 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 883 | $self->extract_first_NNNN_characters (\$text, $doc_obj, $thissection) if $text =~ /./;
|
|---|
| 884 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 885 | }
|
|---|
| 886 | }
|
|---|
| 887 |
|
|---|
| 888 | if ($self->{'extract_acronyms'}) {
|
|---|
| 889 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 890 | while (defined $thissection) {
|
|---|
| 891 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 892 | $self->extract_acronyms (\$text, $doc_obj, $thissection) if $text =~ /./;
|
|---|
| 893 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 894 | }
|
|---|
| 895 | }
|
|---|
| 896 |
|
|---|
| 897 | if ($self->{'markup_acronyms'}) {
|
|---|
| 898 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 899 | while (defined $thissection) {
|
|---|
| 900 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 901 | $text = $self->markup_acronyms ($text, $doc_obj, $thissection);
|
|---|
| 902 | $doc_obj->delete_text($thissection);
|
|---|
| 903 | $doc_obj->add_text($thissection, $text);
|
|---|
| 904 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 905 | }
|
|---|
| 906 | }
|
|---|
| 907 |
|
|---|
| 908 | if($self->{'date_extract'}) {
|
|---|
| 909 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 910 | while (defined $thissection) {
|
|---|
| 911 |
|
|---|
| 912 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 913 | &DateExtract::get_date_metadata($text, $doc_obj,
|
|---|
| 914 | $thissection,
|
|---|
| 915 | $self->{'no_biblio'},
|
|---|
| 916 | $self->{'max_year'},
|
|---|
| 917 | $self->{'max_century'});
|
|---|
| 918 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 919 | }
|
|---|
| 920 | }
|
|---|
| 921 | }
|
|---|
| 922 |
|
|---|
| 923 | # extract acronyms from a section in a document. progress is
|
|---|
| 924 | # reported to outhandle based on the verbosity. both the Acronym
|
|---|
| 925 | # and the AcronymKWIC metadata items are created.
|
|---|
| 926 |
|
|---|
| 927 | sub extract_acronyms {
|
|---|
| 928 | my $self = shift (@_);
|
|---|
| 929 | my ($textref, $doc_obj, $thissection) = @_;
|
|---|
| 930 | my $outhandle = $self->{'outhandle'};
|
|---|
| 931 |
|
|---|
| 932 | # print $outhandle " extracting acronyms ...\n"
|
|---|
| 933 | &gsprintf($outhandle, " {BasPlug.extracting_acronyms}...\n")
|
|---|
| 934 | if ($self->{'verbosity'} > 2);
|
|---|
| 935 |
|
|---|
| 936 | my $acro_array = &acronym::acronyms($textref);
|
|---|
| 937 |
|
|---|
| 938 | foreach my $acro (@$acro_array) {
|
|---|
| 939 |
|
|---|
| 940 | #check that this is the first time ...
|
|---|
| 941 | my $seen_before = "false";
|
|---|
| 942 | my $previous_data = $doc_obj->get_metadata($thissection, "Acronym");
|
|---|
| 943 | foreach my $thisAcro (@$previous_data) {
|
|---|
| 944 | if ($thisAcro eq $acro->to_string()) {
|
|---|
| 945 | $seen_before = "true";
|
|---|
| 946 | # print $outhandle " already seen ". $acro->to_string() . "\n"
|
|---|
| 947 | &gsprintf($outhandle, " {BasPlug.already_seen} " . $acro->to_string() . "\n")
|
|---|
| 948 | if ($self->{'verbosity'} >= 4);
|
|---|
| 949 | }
|
|---|
| 950 | }
|
|---|
| 951 |
|
|---|
| 952 | if ($seen_before eq "false") {
|
|---|
| 953 | #write it to the file ...
|
|---|
| 954 | $acro->write_to_file();
|
|---|
| 955 |
|
|---|
| 956 | #do the normal acronym
|
|---|
| 957 | $doc_obj->add_utf8_metadata($thissection, "Acronym", $acro->to_string());
|
|---|
| 958 | # print $outhandle " adding ". $acro->to_string() . "\n"
|
|---|
| 959 | &gsprintf($outhandle, " {BasPlug.adding} " . $acro->to_string() . "\n")
|
|---|
| 960 | if ($self->{'verbosity'} > 3);
|
|---|
| 961 | }
|
|---|
| 962 | }
|
|---|
| 963 |
|
|---|
| 964 | # print $outhandle " done extracting acronyms. \n"
|
|---|
| 965 | &gsprintf($outhandle, " {BasPlug.done_acronym_extract}\n")
|
|---|
| 966 | if ($self->{'verbosity'} > 2);
|
|---|
| 967 | }
|
|---|
| 968 |
|
|---|
| 969 | sub markup_acronyms {
|
|---|
| 970 | my $self = shift (@_);
|
|---|
| 971 | my ($text, $doc_obj, $thissection) = @_;
|
|---|
| 972 | my $outhandle = $self->{'outhandle'};
|
|---|
| 973 |
|
|---|
| 974 | # print $outhandle " marking up acronyms ...\n"
|
|---|
| 975 | &gsprintf($outhandle, " {BasPlug.marking_up_acronyms}...\n")
|
|---|
| 976 | if ($self->{'verbosity'} > 2);
|
|---|
| 977 |
|
|---|
| 978 | #self is passed in to check for verbosity ...
|
|---|
| 979 | $text = &acronym::markup_acronyms($text, $self);
|
|---|
| 980 |
|
|---|
| 981 | # print $outhandle " done marking up acronyms. \n"
|
|---|
| 982 | &gsprintf($outhandle, " {BasPlug.done_acronym_markup}\n")
|
|---|
| 983 | if ($self->{'verbosity'} > 2);
|
|---|
| 984 |
|
|---|
| 985 | return $text;
|
|---|
| 986 | }
|
|---|
| 987 |
|
|---|
| 988 | sub compile_stats {
|
|---|
| 989 | my $self = shift(@_);
|
|---|
| 990 | my ($stats) = @_;
|
|---|
| 991 |
|
|---|
| 992 | $stats->{'num_processed'} += $self->{'num_processed'};
|
|---|
| 993 | $stats->{'num_not_processed'} += $self->{'num_not_processed'};
|
|---|
| 994 | $stats->{'num_archives'} += $self->{'num_archives'};
|
|---|
| 995 |
|
|---|
| 996 | }
|
|---|
| 997 |
|
|---|
| 998 | sub associate_cover_image {
|
|---|
| 999 | my $self = shift(@_);
|
|---|
| 1000 | my ($doc_obj, $filename) = @_;
|
|---|
| 1001 |
|
|---|
| 1002 | $filename =~ s/\.[^\\\/\.]+$/\.jpg/;
|
|---|
| 1003 | if (-e $filename) {
|
|---|
| 1004 | $doc_obj->associate_file($filename, "cover.jpg", "image/jpeg");
|
|---|
| 1005 | } else {
|
|---|
| 1006 | $filename =~ s/jpg$/JPG/;
|
|---|
| 1007 | if (-e $filename) {
|
|---|
| 1008 | $doc_obj->associate_file($filename, "cover.jpg", "image/jpeg");
|
|---|
| 1009 | }
|
|---|
| 1010 | }
|
|---|
| 1011 | }
|
|---|
| 1012 |
|
|---|
| 1013 | 1;
|
|---|
