| 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) 1999-2005 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 | BEGIN {
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| 29 | die "GSDLHOME not set\n" unless defined $ENV{'GSDLHOME'};
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| 30 | }
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| 31 |
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| 32 | eval {require bytes};
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| 33 |
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| 34 | # suppress the annoying "subroutine redefined" warning that various
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| 35 | # plugins cause under perl 5.6
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| 36 | $SIG{__WARN__} = sub {warn($_[0]) unless ($_[0] =~ /Subroutine\s+\S+\sredefined/)};
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| 37 |
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| 38 | use strict;
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| 39 | no strict 'subs';
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| 40 | no strict 'refs'; # allow filehandles to be variables and viceversa
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| 41 |
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| 42 | use File::Basename;
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| 43 |
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| 44 | use Kea;
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| 45 | use multiread;
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| 46 | use encodings;
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| 47 | use unicode;
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| 48 | use cnseg;
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| 49 | use acronym;
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| 50 | use textcat;
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| 51 | use doc;
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| 52 | eval "require diagnostics"; # some perl distros (eg mac) don't have this
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| 53 | use DateExtract;
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| 54 | use ghtml;
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| 55 | use gsprintf 'gsprintf';
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| 56 | use printusage;
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| 57 | use parse2;
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| 58 |
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| 59 |
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| 60 | use GISBasPlug;
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| 61 |
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| 62 | @BasPlug::ISA = ( GISBasPlug );
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| 63 |
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| 64 | my $unicode_list =
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| 65 | [ { 'name' => "ascii",
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| 66 | 'desc' => "{BasPlug.input_encoding.ascii}" },
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| 67 | { 'name' => "utf8",
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| 68 | 'desc' => "{BasPlug.input_encoding.utf8}" },
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| 69 | { 'name' => "unicode",
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| 70 | 'desc' => "{BasPlug.input_encoding.unicode}" } ];
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| 71 |
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| 72 | my $auto_unicode_list =
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| 73 | [ { 'name' => "auto",
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| 74 | 'desc' => "{BasPlug.input_encoding.auto}" } ];
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| 75 |
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| 76 | my $e = $encodings::encodings;
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| 77 | foreach my $enc (sort {$e->{$a}->{'name'} cmp $e->{$b}->{'name'}} keys (%$e))
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| 78 | {
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| 79 | my $hashEncode =
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| 80 | {'name' => $enc,
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| 81 | 'desc' => $e->{$enc}->{'name'}};
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| 82 |
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| 83 | push(@{$unicode_list},$hashEncode);
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| 84 | }
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| 85 |
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| 86 | push(@{$auto_unicode_list},@{$unicode_list});
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| 87 |
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| 88 | my $arguments =
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| 89 | [ { 'name' => "process_exp",
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| 90 | 'desc' => "{BasPlug.process_exp}",
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| 91 | 'type' => "regexp",
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| 92 | 'deft' => "",
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| 93 | 'reqd' => "no" },
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| 94 | { 'name' => "block_exp",
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| 95 | 'desc' => "{BasPlug.block_exp}",
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| 96 | 'type' => "regexp",
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| 97 | 'deft' => "",
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| 98 | 'reqd' => "no" },
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| 99 | { 'name' => "smart_block",
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| 100 | 'desc' => "{BasPlug.smart_block}",
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| 101 | 'type' => "flag",
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| 102 | 'reqd' => "no" },
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| 103 | { 'name' => "associate_ext",
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| 104 | 'desc' => "{BasPlug.associate_ext}",
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| 105 | 'type' => "string",
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| 106 | 'reqd' => "no" },
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| 107 | { 'name' => "associate_tail_re",
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| 108 | 'desc' => "{BasPlug.associate_tail_re}",
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| 109 | 'type' => "string",
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| 110 | 'reqd' => "no" },
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| 111 | { 'name' => "input_encoding",
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| 112 | 'desc' => "{BasPlug.input_encoding}",
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| 113 | 'type' => "enum",
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| 114 | 'list' => $auto_unicode_list,
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| 115 | 'reqd' => "no" ,
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| 116 | 'deft' => "auto" } ,
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| 117 | { 'name' => "default_encoding",
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| 118 | 'desc' => "{BasPlug.default_encoding}",
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| 119 | 'type' => "enum",
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| 120 | 'list' => $unicode_list,
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| 121 | 'reqd' => "no",
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| 122 | 'deft' => "utf8" },
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| 123 | { 'name' => "extract_language",
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| 124 | 'desc' => "{BasPlug.extract_language}",
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| 125 | 'type' => "flag",
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| 126 | 'reqd' => "no" },
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| 127 | { 'name' => "default_language",
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| 128 | 'desc' => "{BasPlug.default_language}",
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| 129 | 'type' => "string",
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| 130 | 'deft' => "en",
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| 131 | 'reqd' => "no" },
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| 132 | { 'name' => "extract_acronyms",
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| 133 | 'desc' => "{BasPlug.extract_acronyms}",
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| 134 | 'type' => "flag",
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| 135 | 'reqd' => "no" },
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| 136 | { 'name' => "markup_acronyms",
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| 137 | 'desc' => "{BasPlug.markup_acronyms}",
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| 138 | 'type' => "flag",
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| 139 | 'reqd' => "no" },
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| 140 | { 'name' => "extract_keyphrases",
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| 141 | 'desc' => "{BasPlug.extract_keyphrases}",
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| 142 | 'type' => "flag",
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| 143 | 'reqd' => "no" },
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| 144 | { 'name' => "extract_keyphrases_kea4",
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| 145 | 'desc' => "{BasPlug.extract_keyphrases_kea4}",
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| 146 | 'type' => "flag",
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| 147 | 'reqd' => "no" },
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| 148 | { 'name' => "extract_keyphrase_options",
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| 149 | 'desc' => "{BasPlug.extract_keyphrase_options}",
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| 150 | 'type' => "string",
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| 151 | 'deft' => "",
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| 152 | 'reqd' => "no" },
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| 153 | { 'name' => "first",
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| 154 | 'desc' => "{BasPlug.first}",
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| 155 | 'type' => "string",
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| 156 | 'reqd' => "no" },
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| 157 | { 'name' => "extract_email",
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| 158 | 'desc' => "{BasPlug.extract_email}",
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| 159 | 'type' => "flag",
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| 160 | 'reqd' => "no" },
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| 161 | { 'name' => "extract_historical_years",
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| 162 | 'desc' => "{BasPlug.extract_historical_years}",
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| 163 | 'type' => "flag",
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| 164 | 'reqd' => "no" },
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| 165 | { 'name' => "maximum_year",
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| 166 | 'desc' => "{BasPlug.maximum_year}",
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| 167 | 'type' => "int",
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| 168 | 'deft' => (localtime)[5]+1900,
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| 169 | 'char_length' => "4",
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| 170 | #'range' => "2,100",
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| 171 | 'reqd' => "no"},
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| 172 | { 'name' => "maximum_century",
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| 173 | 'desc' => "{BasPlug.maximum_century}",
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| 174 | 'type' => "string",
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| 175 | 'deft' => "-1",
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| 176 | 'reqd' => "no" },
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| 177 | { 'name' => "no_bibliography",
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| 178 | 'desc' => "{BasPlug.no_bibliography}",
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| 179 | 'type' => "flag",
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| 180 | 'reqd' => "no"},
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| 181 | { 'name' => "no_cover_image",
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| 182 | 'desc' => "{BasPlug.no_cover_image}",
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| 183 | 'type' => "flag",
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| 184 | 'reqd' => "no" },
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| 185 | { 'name' => "separate_cjk",
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| 186 | 'desc' => "{BasPlug.separate_cjk}",
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| 187 | 'type' => "flag",
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| 188 | 'reqd' => "no",
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| 189 | 'hiddengli' => "yes" },
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| 190 | { 'name' => "new_extract_email",
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| 191 | 'desc' => "",
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| 192 | 'type' => "flag",
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| 193 | 'reqd' => "no",
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| 194 | 'hiddengli' => "yes" } ];
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| 195 |
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| 196 | my $gis_arguments =
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| 197 | [ { 'name' => "extract_placenames",
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| 198 | 'desc' => "{GISBasPlug.extract_placenames}",
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| 199 | 'type' => "flag",
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| 200 | 'reqd' => "no" },
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| 201 | { 'name' => "gazetteer",
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| 202 | 'desc' => "{GISBasPlug.gazetteer}",
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| 203 | 'type' => "string",
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| 204 | 'reqd' => "no" },
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| 205 | { 'name' => "place_list",
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| 206 | 'desc' => "{GISBasPlug.place_list}",
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| 207 | 'type' => "flag",
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| 208 | 'reqd' => "no" } ];
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| 209 |
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| 210 |
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| 211 | my $options = { 'name' => "BasPlug",
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| 212 | 'desc' => "{BasPlug.desc}",
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| 213 | 'abstract' => "yes",
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| 214 | 'inherits' => "no",
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| 215 | 'args' => $arguments };
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| 216 |
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| 217 |
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| 218 | sub set_keepold {
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| 219 | my $self = shift(@_);
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| 220 | my ($keepold) = @_;
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| 221 |
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| 222 | $self->{'keepold'} = $keepold;
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| 223 | }
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| 224 |
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| 225 | sub get_arguments
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| 226 | {
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| 227 | my $self = shift(@_);
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| 228 | my $optionlistref = $self->{'option_list'};
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| 229 | my @optionlist = @$optionlistref;
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| 230 | my $pluginoptions = pop(@$optionlistref);
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| 231 | my $pluginarguments = $pluginoptions->{'args'};
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| 232 | return $pluginarguments;
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| 233 | }
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| 234 |
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| 235 |
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| 236 | sub print_xml_usage
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| 237 | {
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| 238 | my $self = shift(@_);
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| 239 |
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| 240 | # XML output is always in UTF-8
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| 241 | gsprintf::output_strings_in_UTF8;
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| 242 |
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| 243 | PrintUsage::print_xml_header();
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| 244 | $self->print_xml();
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| 245 | }
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| 246 |
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| 247 |
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| 248 | sub print_xml
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| 249 | {
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| 250 | my $self = shift(@_);
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| 251 |
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| 252 | my $optionlistref = $self->{'option_list'};
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| 253 | my @optionlist = @$optionlistref;
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| 254 | my $pluginoptions = shift(@$optionlistref);
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| 255 | return if (!defined($pluginoptions));
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| 256 |
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| 257 | gsprintf(STDERR, "<PlugInfo>\n");
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| 258 | gsprintf(STDERR, " <Name>$pluginoptions->{'name'}</Name>\n");
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| 259 | my $desc = gsprintf::lookup_string($pluginoptions->{'desc'});
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| 260 | $desc =~ s/</&lt;/g; # doubly escaped
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| 261 | $desc =~ s/>/&gt;/g;
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| 262 |
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| 263 | gsprintf(STDERR, " <Desc>$desc</Desc>\n");
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| 264 | gsprintf(STDERR, " <Abstract>$pluginoptions->{'abstract'}</Abstract>\n");
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| 265 | gsprintf(STDERR, " <Inherits>$pluginoptions->{'inherits'}</Inherits>\n");
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| 266 | gsprintf(STDERR, " <Explodes>" . ($pluginoptions->{'explodes'} || "no") . "</Explodes>\n");
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| 267 | gsprintf(STDERR, " <Arguments>\n");
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| 268 | if (defined($pluginoptions->{'args'})) {
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| 269 | &PrintUsage::print_options_xml($pluginoptions->{'args'});
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| 270 | }
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| 271 |
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| 272 | # Recurse up the plugin hierarchy
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| 273 | $self->print_xml();
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| 274 |
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| 275 | gsprintf(STDERR, " </Arguments>\n");
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| 276 | gsprintf(STDERR, "</PlugInfo>\n");
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| 277 | }
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| 278 |
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| 279 |
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| 280 | sub print_txt_usage
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| 281 | {
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| 282 | my $self = shift(@_);
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| 283 | # Print the usage message for a plugin (recursively)
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| 284 | my $descoffset = $self->determine_description_offset(0);
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| 285 | $self->print_plugin_usage($descoffset, 1);
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| 286 | }
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| 287 |
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| 288 |
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| 289 | sub determine_description_offset
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| 290 | {
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| 291 | my $self = shift(@_);
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| 292 | my $maxoffset = shift(@_);
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| 293 |
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| 294 | my $optionlistref = $self->{'option_list'};
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| 295 | my @optionlist = @$optionlistref;
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| 296 | my $pluginoptions = shift(@$optionlistref);
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| 297 | return $maxoffset if (!defined($pluginoptions));
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| 298 |
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| 299 | # Find the length of the longest option string of this plugin
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| 300 | my $pluginargs = $pluginoptions->{'args'};
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| 301 | if (defined($pluginargs)) {
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| 302 | my $longest = &PrintUsage::find_longest_option_string($pluginargs);
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| 303 | if ($longest > $maxoffset) {
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| 304 | $maxoffset = $longest;
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| 305 | }
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| 306 | }
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| 307 |
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| 308 | # Recurse up the plugin hierarchy
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| 309 | $maxoffset = $self->determine_description_offset($maxoffset);
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| 310 | $self->{'option_list'} = \@optionlist;
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| 311 | return $maxoffset;
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| 312 | }
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| 313 |
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| 314 |
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| 315 | sub print_plugin_usage
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| 316 | {
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| 317 | my $self = shift(@_);
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| 318 | my $descoffset = shift(@_);
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| 319 | my $isleafclass = shift(@_);
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| 320 |
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| 321 | my $optionlistref = $self->{'option_list'};
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| 322 | my @optionlist = @$optionlistref;
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| 323 | my $pluginoptions = shift(@$optionlistref);
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| 324 | return if (!defined($pluginoptions));
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| 325 |
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| 326 | my $pluginname = $pluginoptions->{'name'};
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| 327 | my $pluginargs = $pluginoptions->{'args'};
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| 328 | my $plugindesc = $pluginoptions->{'desc'};
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| 329 |
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| 330 | # Produce the usage information using the data structure above
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| 331 | if ($isleafclass) {
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| 332 | if (defined($plugindesc)) {
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| 333 | gsprintf(STDERR, "$plugindesc\n\n");
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| 334 | }
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| 335 | gsprintf(STDERR, " {common.usage}: plugin $pluginname [{common.options}]\n\n");
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| 336 | }
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| 337 |
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| 338 | # Display the plugin options, if there are some
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| 339 | if (defined($pluginargs)) {
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| 340 | # Calculate the column offset of the option descriptions
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| 341 | my $optiondescoffset = $descoffset + 2; # 2 spaces between options & descriptions
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| 342 |
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| 343 | if ($isleafclass) {
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| 344 | gsprintf(STDERR, " {common.specific_options}:\n");
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| 345 | }
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| 346 | else {
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| 347 | gsprintf(STDERR, " {common.general_options}:\n", $pluginname);
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| 348 | }
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| 349 |
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| 350 | # Display the plugin options
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| 351 | &PrintUsage::print_options_txt($pluginargs, $optiondescoffset);
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| 352 | }
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| 353 |
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| 354 | # Recurse up the plugin hierarchy
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| 355 | $self->print_plugin_usage($descoffset, 0);
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| 356 | $self->{'option_list'} = \@optionlist;
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| 357 | }
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| 358 |
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| 359 |
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| 360 | sub new {
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| 361 | # Set Encodings to the list!!
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| 362 |
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| 363 |
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| 364 | # Start the BasPlug Constructor
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| 365 | my $class = shift (@_);
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| 366 | my ($pluginlist,$args,$hashArgOptLists) = @_;
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| 367 | push(@$pluginlist, $class);
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| 368 | my $plugin_name = (defined $pluginlist->[0]) ? $pluginlist->[0] : $class;
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| 369 |
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| 370 | if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
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| 371 | if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
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| 372 |
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| 373 | if (GISBasPlug::has_mapdata()) {
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| 374 | push(@$arguments,@$gis_arguments);
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| 375 | }
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| 376 |
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| 377 | my $self = {};
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| 378 | $self->{'outhandle'} = STDERR;
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| 379 | $self->{'option_list'} = $hashArgOptLists->{"OptList"};
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| 380 | $self->{"info_only"} = 0;
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| 381 |
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| 382 | # Check if gsdlinfo is in the argument list or not - if it is, don't parse
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| 383 | # the args, just return the object.
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| 384 | foreach my $strArg (@{$args})
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| 385 | {
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| 386 | if($strArg eq "-gsdlinfo")
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| 387 | {
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| 388 | $self->{"info_only"} = 1;
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| 389 | return bless $self, $class;
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| 390 | }
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| 391 | }
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| 392 |
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| 393 | if(!parse2::parse($args,$hashArgOptLists->{"ArgList"},$self))
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| 394 | {
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| 395 | my $classTempClass = bless $self, $class;
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| 396 | print STDERR "<BadPlugin p=$plugin_name>\n";
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| 397 | &gsprintf(STDERR, "\n{BasPlug.bad_general_option}\n", $plugin_name);
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| 398 | $classTempClass->print_txt_usage(""); # Use default resource bundle
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| 399 | die "\n";
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| 400 | }
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| 401 |
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| 402 |
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| 403 | delete $self->{"info_only"};
|
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| 404 | # else parsing was successful.
|
|---|
| 405 |
|
|---|
| 406 | $self->{'plugin_type'} = $plugin_name;
|
|---|
| 407 | #$self->{'outhandle'} = STDERR;
|
|---|
| 408 | $self->{'textcat'} = new textcat();
|
|---|
| 409 | $self->{'num_processed'} = 0;
|
|---|
| 410 | $self->{'num_not_processed'} = 0;
|
|---|
| 411 | $self->{'num_blocked'} = 0;
|
|---|
| 412 | $self->{'num_archives'} = 0;
|
|---|
| 413 | $self->{'cover_image'} = 1; # cover image is on by default
|
|---|
| 414 | $self->{'cover_image'} = 0 if ($self->{'no_cover_image'});
|
|---|
| 415 | #$self->{'option_list'} = $hashArgOptLists->{"OptList"};
|
|---|
| 416 |
|
|---|
| 417 | my $associate_ext = $self->{'associate_ext'};
|
|---|
| 418 | if ((defined $associate_ext) && ($associate_ext ne "")) {
|
|---|
| 419 |
|
|---|
| 420 | my $associate_tail_re = $self->{'associate_tail_re'};
|
|---|
| 421 | if ((defined $associate_tail_re) && ($associate_tail_re ne "")) {
|
|---|
| 422 | my $outhandle = $self->{'outhandle'};
|
|---|
| 423 | print $outhandle "Warning: can only specify 'associate_ext' or 'associate_tail_re'\n";
|
|---|
| 424 | print $outhandle " defaulting to 'associate_tail_re'\n";
|
|---|
| 425 | }
|
|---|
| 426 | else {
|
|---|
| 427 | my @exts = split(/,/,$associate_ext);
|
|---|
| 428 |
|
|---|
| 429 | my @exts_bracketed = map { $_ = "(?:\\.$_)" } @exts;
|
|---|
| 430 | my $associate_tail_re = join("|",@exts_bracketed);
|
|---|
| 431 | $self->{'associate_tail_re'} = $associate_tail_re;
|
|---|
| 432 | }
|
|---|
| 433 |
|
|---|
| 434 | delete $self->{'associate_ext'};
|
|---|
| 435 | }
|
|---|
| 436 |
|
|---|
| 437 | $self->{'shared_fileroot'} = {};
|
|---|
| 438 | $self->{'file_blocks'} = {};
|
|---|
| 439 |
|
|---|
| 440 | if ($self->{'extract_placenames'}) {
|
|---|
| 441 |
|
|---|
| 442 | my $outhandle = $self->{'outhandle'};
|
|---|
| 443 |
|
|---|
| 444 | my $places_ref
|
|---|
| 445 | = GISBasPlug::loadGISDatabase($outhandle,$self->{'gazetteer'});
|
|---|
| 446 |
|
|---|
| 447 | if (!defined $places_ref) {
|
|---|
| 448 | print $outhandle "Warning: Error loading mapdata gazetteer \"$self->{'gazetteer'}\"\n";
|
|---|
| 449 | print $outhandle " No placename extraction will take place.\n";
|
|---|
| 450 | $self->{'extract_placenames'} = undef;
|
|---|
| 451 | }
|
|---|
| 452 | else {
|
|---|
| 453 | $self->{'places'} = $places_ref;
|
|---|
| 454 | }
|
|---|
| 455 | }
|
|---|
| 456 |
|
|---|
| 457 | return bless $self, $class;
|
|---|
| 458 |
|
|---|
| 459 | }
|
|---|
| 460 |
|
|---|
| 461 | # initialize BasPlug options
|
|---|
| 462 | # if init() is overridden in a sub-class, remember to call BasPlug::init()
|
|---|
| 463 | sub init {
|
|---|
| 464 | my $self = shift (@_);
|
|---|
| 465 | my ($verbosity, $outhandle, $failhandle) = @_;
|
|---|
| 466 |
|
|---|
| 467 | # verbosity is passed through from the processor
|
|---|
| 468 | $self->{'verbosity'} = $verbosity;
|
|---|
| 469 |
|
|---|
| 470 | # as are the outhandle and failhandle
|
|---|
| 471 | $self->{'outhandle'} = $outhandle if defined $outhandle;
|
|---|
| 472 | $self->{'failhandle'} = $failhandle;
|
|---|
| 473 |
|
|---|
| 474 | # set process_exp and block_exp to defaults unless they were
|
|---|
| 475 | # explicitly set
|
|---|
| 476 |
|
|---|
| 477 | if ((!$self->is_recursive()) and
|
|---|
| 478 | (!defined $self->{'process_exp'}) || ($self->{'process_exp'} eq "")) {
|
|---|
| 479 |
|
|---|
| 480 | $self->{'process_exp'} = $self->get_default_process_exp ();
|
|---|
| 481 | if ($self->{'process_exp'} eq "") {
|
|---|
| 482 | warn ref($self) . " Warning: Non-recursive plugin has no process_exp\n";
|
|---|
| 483 | }
|
|---|
| 484 | }
|
|---|
| 485 |
|
|---|
| 486 | if ((!defined $self->{'block_exp'}) || ($self->{'block_exp'} eq "")) {
|
|---|
| 487 | $self->{'block_exp'} = $self->get_default_block_exp ();
|
|---|
| 488 | }
|
|---|
| 489 |
|
|---|
| 490 | }
|
|---|
| 491 |
|
|---|
| 492 | sub begin {
|
|---|
| 493 | my $self = shift (@_);
|
|---|
| 494 | my ($pluginfo, $base_dir, $processor, $maxdocs) = @_;
|
|---|
| 495 | $self->initialise_extractors();
|
|---|
| 496 | }
|
|---|
| 497 |
|
|---|
| 498 | sub end {
|
|---|
| 499 | # potentially called at the end of each plugin pass
|
|---|
| 500 | # import.pl only has one plugin pass, but buildcol.pl has multiple ones
|
|---|
| 501 |
|
|---|
| 502 | my ($self) = @_;
|
|---|
| 503 | $self->finalise_extractors();
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 | sub deinit {
|
|---|
| 507 | # called only once, after all plugin passes have been done
|
|---|
| 508 |
|
|---|
| 509 | my ($self) = @_;
|
|---|
| 510 | }
|
|---|
| 511 |
|
|---|
| 512 | # this function should be overridden to return 1
|
|---|
| 513 | # in recursive plugins
|
|---|
| 514 | sub is_recursive {
|
|---|
| 515 | my $self = shift (@_);
|
|---|
| 516 |
|
|---|
| 517 | return 0;
|
|---|
| 518 | }
|
|---|
| 519 |
|
|---|
| 520 | sub get_default_block_exp {
|
|---|
| 521 | my $self = shift (@_);
|
|---|
| 522 |
|
|---|
| 523 | return "";
|
|---|
| 524 | }
|
|---|
| 525 |
|
|---|
| 526 | sub get_default_process_exp {
|
|---|
| 527 | my $self = shift (@_);
|
|---|
| 528 |
|
|---|
| 529 | return "";
|
|---|
| 530 | }
|
|---|
| 531 |
|
|---|
| 532 | # default implementation is to do nothing.
|
|---|
| 533 | sub store_block_files
|
|---|
| 534 | {
|
|---|
| 535 | my $self =shift (@_);
|
|---|
| 536 | my ($filename) = @_;
|
|---|
| 537 | return;
|
|---|
| 538 | }
|
|---|
| 539 |
|
|---|
| 540 | #default implementation is to block a file with same name as this, but extension jpg or JPG, if cover_images is on.
|
|---|
| 541 | sub block_cover_image
|
|---|
| 542 | {
|
|---|
| 543 | my $self =shift;
|
|---|
| 544 | my $filename = shift;
|
|---|
| 545 |
|
|---|
| 546 | if ($self->{'cover_image'}) {
|
|---|
| 547 | my $coverfile = $filename;
|
|---|
| 548 | $coverfile =~ s/\.[^\\\/\.]+$/\.jpg/;
|
|---|
| 549 | if (!-e $coverfile) {
|
|---|
| 550 | $coverfile =~ s/jpg$/JPG/;
|
|---|
| 551 | }
|
|---|
| 552 | if (-e $coverfile) {
|
|---|
| 553 | $self->{'file_blocks'}->{$coverfile} = 1;
|
|---|
| 554 | }
|
|---|
| 555 | }
|
|---|
| 556 |
|
|---|
| 557 | return;
|
|---|
| 558 | }
|
|---|
| 559 |
|
|---|
| 560 | sub root_ext_split
|
|---|
| 561 | {
|
|---|
| 562 | my $self = shift (@_);
|
|---|
| 563 | my ($filename,$tail_re) = @_;
|
|---|
| 564 |
|
|---|
| 565 | my ($file_prefix,$file_ext) = ($filename =~ m/^(.*?)($tail_re)$/);
|
|---|
| 566 |
|
|---|
| 567 | if ((!defined $file_prefix) || (!defined $file_ext)) {
|
|---|
| 568 | ($file_prefix,$file_ext) = ($filename =~ m/^(.*)(\..*?)$/);
|
|---|
| 569 | }
|
|---|
| 570 |
|
|---|
| 571 | return ($file_prefix,$file_ext);
|
|---|
| 572 | }
|
|---|
| 573 |
|
|---|
| 574 | sub metadata_read {
|
|---|
| 575 | my $self = shift (@_);
|
|---|
| 576 | my ($pluginfo, $base_dir, $file, $metadata, $extrametakeys, $extrametadata, $processor, $maxdocs, $gli) = @_;
|
|---|
| 577 | # Keep track of filenames with same root but different extensions
|
|---|
| 578 | # Used to support -associate_ext and the more generalised
|
|---|
| 579 | # -associate_tail_re
|
|---|
| 580 |
|
|---|
| 581 | my $associate_tail_re = $self->{'associate_tail_re'};
|
|---|
| 582 | if ((defined $associate_tail_re) && ($associate_tail_re ne "")) {
|
|---|
| 583 |
|
|---|
| 584 | my ($file_prefix,$file_ext)
|
|---|
| 585 | = $self->root_ext_split($file,$associate_tail_re);
|
|---|
| 586 |
|
|---|
| 587 | if ((defined $file_prefix) && (defined $file_ext)) {
|
|---|
| 588 |
|
|---|
| 589 | my $shared_fileroot = $self->{'shared_fileroot'};
|
|---|
| 590 | if (!defined $shared_fileroot->{$file_prefix}) {
|
|---|
| 591 | my $file_prefix_rec = { 'tie_to' => undef,
|
|---|
| 592 | 'exts' => {} };
|
|---|
| 593 | $shared_fileroot->{$file_prefix} = $file_prefix_rec;
|
|---|
| 594 | }
|
|---|
| 595 |
|
|---|
| 596 | my $file_prefix_rec = $shared_fileroot->{$file_prefix};
|
|---|
| 597 |
|
|---|
| 598 | my $process_exp = $self->{'process_exp'};
|
|---|
| 599 |
|
|---|
| 600 | if ($file =~ m/$process_exp/) {
|
|---|
| 601 | # This is the document the others should be tied to
|
|---|
| 602 | $file_prefix_rec->{'tie_to'} = $file_ext;
|
|---|
| 603 | }
|
|---|
| 604 | else {
|
|---|
| 605 | if ($file_ext =~ m/$associate_tail_re$/) {
|
|---|
| 606 | $file_prefix_rec->{'exts'}->{$file_ext} = 1;
|
|---|
| 607 | }
|
|---|
| 608 | }
|
|---|
| 609 |
|
|---|
| 610 | }
|
|---|
| 611 | }
|
|---|
| 612 |
|
|---|
| 613 | # now check whether we are actually processing this
|
|---|
| 614 | my $filename = $file;
|
|---|
| 615 | $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
|
|---|
| 616 | if ($self->{'process_exp'} eq "" || $filename !~ /$self->{'process_exp'}/ || !-f $filename) {
|
|---|
| 617 | return undef; # can't recognise
|
|---|
| 618 | }
|
|---|
| 619 |
|
|---|
| 620 | # do smart blocking if appropriate
|
|---|
| 621 | if ($self->{'smart_block'}) {
|
|---|
| 622 | $self->store_block_files($filename);
|
|---|
| 623 | }
|
|---|
| 624 | # block the cover image if there is one
|
|---|
| 625 | if ($self->{'cover_image'}) {
|
|---|
| 626 | $self->block_cover_image($filename);
|
|---|
| 627 | }
|
|---|
| 628 |
|
|---|
| 629 | return 1;
|
|---|
| 630 | }
|
|---|
| 631 |
|
|---|
| 632 | sub tie_to_filename
|
|---|
| 633 | {
|
|---|
| 634 | my $self = shift (@_);
|
|---|
| 635 |
|
|---|
| 636 | my ($file_ext,$file_prefix_rec) = @_;
|
|---|
| 637 |
|
|---|
| 638 | if (defined $file_prefix_rec) {
|
|---|
| 639 | my $tie_to = $file_prefix_rec->{'tie_to'};
|
|---|
| 640 |
|
|---|
| 641 | if (defined $tie_to) {
|
|---|
| 642 | if ($tie_to eq $file_ext) {
|
|---|
| 643 | return 1;
|
|---|
| 644 | }
|
|---|
| 645 | }
|
|---|
| 646 | }
|
|---|
| 647 |
|
|---|
| 648 | return 0;
|
|---|
| 649 | }
|
|---|
| 650 |
|
|---|
| 651 | sub tie_to_assoc_file
|
|---|
| 652 | {
|
|---|
| 653 | my $self = shift (@_);
|
|---|
| 654 | my ($file_ext,$file_prefix_rec) = @_;
|
|---|
| 655 |
|
|---|
| 656 | if (defined $file_prefix_rec) {
|
|---|
| 657 | my $tie_to = $file_prefix_rec->{'tie_to'};
|
|---|
| 658 | if (defined $tie_to) {
|
|---|
| 659 |
|
|---|
| 660 | my $exts = $file_prefix_rec->{'exts'};
|
|---|
| 661 |
|
|---|
| 662 | my $has_file_ext = $exts->{$file_ext};
|
|---|
| 663 |
|
|---|
| 664 | if ($has_file_ext) {
|
|---|
| 665 | return 1;
|
|---|
| 666 | }
|
|---|
| 667 | }
|
|---|
| 668 | }
|
|---|
| 669 |
|
|---|
| 670 | return 0;
|
|---|
| 671 | }
|
|---|
| 672 |
|
|---|
| 673 |
|
|---|
| 674 | sub associate_with
|
|---|
| 675 | {
|
|---|
| 676 | my $self = shift (@_);
|
|---|
| 677 | my ($file, $filename, $metadata) = @_;
|
|---|
| 678 |
|
|---|
| 679 | my $associate_tail_re = $self->{'associate_tail_re'};
|
|---|
| 680 | return 0 if (!$associate_tail_re);
|
|---|
| 681 |
|
|---|
| 682 | # If file, see if matches with "tie_to" doc or is one of the
|
|---|
| 683 | # associated filename extensions.
|
|---|
| 684 |
|
|---|
| 685 | my ($file_prefix,$file_ext) = $self->root_ext_split($file,$associate_tail_re);
|
|---|
| 686 |
|
|---|
| 687 | if ((defined $file_prefix) && (defined $file_ext)) {
|
|---|
| 688 |
|
|---|
| 689 | my $file_prefix_rec = $self->{'shared_fileroot'}->{$file_prefix};
|
|---|
| 690 |
|
|---|
| 691 | if ($self->tie_to_filename($file_ext,$file_prefix_rec)) {
|
|---|
| 692 |
|
|---|
| 693 | # Set up gsdlassocfile_tobe
|
|---|
| 694 |
|
|---|
| 695 | my $exts = $file_prefix_rec->{'exts'};
|
|---|
| 696 |
|
|---|
| 697 | if (!defined $metadata->{'gsdlassocfile_tobe'}) {
|
|---|
| 698 | $metadata->{'gsdlassocfile_tobe'} = [];
|
|---|
| 699 | }
|
|---|
| 700 |
|
|---|
| 701 | my $assoc_tobe = $metadata->{'gsdlassocfile_tobe'};
|
|---|
| 702 |
|
|---|
| 703 | my ($full_prefix) = ($filename =~ m/^(.*)\..*?$/);
|
|---|
| 704 | foreach my $e (keys %$exts) {
|
|---|
| 705 | my $assoc_file = "$full_prefix$e";
|
|---|
| 706 | print STDERR " $self->{'plugin_type'}: Associating $file_prefix$e with $file_prefix_rec->{'tie_to'} version\n";
|
|---|
| 707 | my $mime_type = ""; # let system auto detect this
|
|---|
| 708 | push(@$assoc_tobe,"$assoc_file:$mime_type:");
|
|---|
| 709 | }
|
|---|
| 710 |
|
|---|
| 711 | }
|
|---|
| 712 | elsif ($self->tie_to_assoc_file($file_ext,$file_prefix_rec)) {
|
|---|
| 713 |
|
|---|
| 714 |
|
|---|
| 715 | # a form of smart block
|
|---|
| 716 | return 1;
|
|---|
| 717 | }
|
|---|
| 718 | }
|
|---|
| 719 |
|
|---|
| 720 | return 0;
|
|---|
| 721 | }
|
|---|
| 722 |
|
|---|
| 723 |
|
|---|
| 724 | sub read_block {
|
|---|
| 725 | my $self = shift (@_);
|
|---|
| 726 |
|
|---|
| 727 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
|
|---|
| 728 |
|
|---|
| 729 |
|
|---|
| 730 | my $filename = $file;
|
|---|
| 731 | $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
|
|---|
| 732 |
|
|---|
| 733 | if ($self->associate_with($file,$filename,$metadata)) {
|
|---|
| 734 | # a form of smart block
|
|---|
| 735 | $self->{'num_blocked'} ++;
|
|---|
| 736 | return (0,undef); # blocked
|
|---|
| 737 | }
|
|---|
| 738 |
|
|---|
| 739 | my $smart_block = $self->{'smart_block'};
|
|---|
| 740 | my $smart_block_BN = $self->{'smart_block_BN'};
|
|---|
| 741 |
|
|---|
| 742 | if ($smart_block || $smart_block_BN) {
|
|---|
| 743 | if (defined $self->{'file_blocks'}->{$filename} && $self->{'file_blocks'}->{$filename} == 1){
|
|---|
| 744 | $self->{'num_blocked'} ++;
|
|---|
| 745 | return (0,undef); # blocked
|
|---|
| 746 | }
|
|---|
| 747 | } else {
|
|---|
| 748 | if ($self->{'block_exp'} ne "" && $filename =~ /$self->{'block_exp'}/) {
|
|---|
| 749 | $self->{'num_blocked'} ++;
|
|---|
| 750 | return (0,undef); # blocked
|
|---|
| 751 | }
|
|---|
| 752 | if ($self->{'cover_image'}) {
|
|---|
| 753 | if (defined $self->{'file_blocks'}->{$filename} && $self->{'file_blocks'}->{$filename} == 1){
|
|---|
| 754 | $self->{'num_blocked'} ++;
|
|---|
| 755 | return (0,undef); # blocked
|
|---|
| 756 | }
|
|---|
| 757 | }
|
|---|
| 758 | }
|
|---|
| 759 |
|
|---|
| 760 | if ($filename !~ /$self->{'process_exp'}/ || !-f $filename) {
|
|---|
| 761 | return (undef,undef); # can't recognise
|
|---|
| 762 | }
|
|---|
| 763 |
|
|---|
| 764 | return (1,$filename);
|
|---|
| 765 | }
|
|---|
| 766 |
|
|---|
| 767 | sub read_tidy_file {
|
|---|
| 768 |
|
|---|
| 769 | my $self = shift (@_);
|
|---|
| 770 |
|
|---|
| 771 | my ($file) = @_;
|
|---|
| 772 |
|
|---|
| 773 | $file =~ s/^[\/\\]+//; # $file often begins with / so we'll tidy it up
|
|---|
| 774 |
|
|---|
| 775 | return $file;
|
|---|
| 776 | }
|
|---|
| 777 |
|
|---|
| 778 |
|
|---|
| 779 |
|
|---|
| 780 | # The BasPlug read_into_doc_obj() function. This function does all the
|
|---|
| 781 | # right things to make general options work for a given plugin. It reads in
|
|---|
| 782 | # a file and sets up a slew of metadata all saved in doc_obj, which
|
|---|
| 783 | # it then returns as part of a tuple (process_status,doc_obj)
|
|---|
| 784 | #
|
|---|
| 785 | # Much of this functionality used to reside in read, but it was broken
|
|---|
| 786 | # down into a supporting routine to make the code more flexible.
|
|---|
| 787 | #
|
|---|
| 788 | # recursive plugins (e.g. RecPlug) and specialized plugins like those
|
|---|
| 789 | # capable of processing many documents within a single file (e.g.
|
|---|
| 790 | # GMLPlug) will normally want to implement their own version of
|
|---|
| 791 | # read_into_doc_obj()
|
|---|
| 792 | #
|
|---|
| 793 | # Note that $base_dir might be "" and that $file might
|
|---|
| 794 | # include directories
|
|---|
| 795 | sub read_into_doc_obj {
|
|---|
| 796 | my $self = shift (@_);
|
|---|
| 797 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
|
|---|
| 798 |
|
|---|
| 799 | if ($self->is_recursive()) {
|
|---|
| 800 | gsprintf(STDERR, "{BasPlug.read_must_be_implemented}") && die "\n";
|
|---|
| 801 | }
|
|---|
| 802 |
|
|---|
| 803 | my $outhandle = $self->{'outhandle'};
|
|---|
| 804 |
|
|---|
| 805 | my ($block_status,$filename) = $self->read_block(@_);
|
|---|
| 806 | return $block_status if ((!defined $block_status) || ($block_status==0));
|
|---|
| 807 | $file = $self->read_tidy_file($file);
|
|---|
| 808 |
|
|---|
| 809 | # Do encoding stuff
|
|---|
| 810 | my ($language, $encoding) = $self->textcat_get_language_encoding ($filename);
|
|---|
| 811 | if ($self->{'verbosity'} > 2) {
|
|---|
| 812 | print $outhandle "BasPlug: reading $file as ($encoding,$language)\n";
|
|---|
| 813 | }
|
|---|
| 814 |
|
|---|
| 815 | # create a new document
|
|---|
| 816 | my $doc_obj = new doc ($filename, "indexed_doc");
|
|---|
| 817 | $doc_obj->set_OIDtype ($processor->{'OIDtype'});
|
|---|
| 818 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Language", $language);
|
|---|
| 819 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Encoding", $encoding);
|
|---|
| 820 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Plugin", "$self->{'plugin_type'}");
|
|---|
| 821 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "FileSize", (-s $filename));
|
|---|
| 822 |
|
|---|
| 823 | my ($filemeta) = $file =~ /([^\\\/]+)$/;
|
|---|
| 824 | # how do we know what encoding the filename is in?
|
|---|
| 825 | # assume it is in the same encoding as its contents
|
|---|
| 826 | if ($encoding !~ /(?:ascii|utf8|unicode)/) {
|
|---|
| 827 | $filemeta = unicode::unicode2utf8(
|
|---|
| 828 | unicode::convert2unicode($encoding, \$filemeta)
|
|---|
| 829 | );
|
|---|
| 830 | }
|
|---|
| 831 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Source", &ghtml::dmsafe($filemeta));
|
|---|
| 832 | if ($self->{'cover_image'}) {
|
|---|
| 833 | $self->associate_cover_image($doc_obj, $filename);
|
|---|
| 834 | }
|
|---|
| 835 |
|
|---|
| 836 | # read in file ($text will be in utf8)
|
|---|
| 837 | my $text = "";
|
|---|
| 838 | $self->read_file ($filename, $encoding, $language, \$text);
|
|---|
| 839 |
|
|---|
| 840 | if (!length ($text)) {
|
|---|
| 841 | my $plugin_name = ref ($self);
|
|---|
| 842 | if ($gli) {
|
|---|
| 843 | print STDERR "<ProcessingError n='$file' r='File contains no text'>\n";
|
|---|
| 844 | }
|
|---|
| 845 | gsprintf($outhandle, "$plugin_name: {BasPlug.file_has_no_text}\n", $filename) if $self->{'verbosity'};
|
|---|
| 846 |
|
|---|
| 847 | my $failhandle = $self->{'failhandle'};
|
|---|
| 848 | gsprintf($failhandle, "$file: " . ref($self) . ": {BasPlug.empty_file}\n");
|
|---|
| 849 | # print $failhandle "$file: " . ref($self) . ": file contains no text\n";
|
|---|
| 850 | $self->{'num_not_processed'} ++;
|
|---|
| 851 |
|
|---|
| 852 | return (0,undef); # what should we return here?? error but don't want to pass it on
|
|---|
| 853 | }
|
|---|
| 854 |
|
|---|
| 855 | # include any metadata passed in from previous plugins
|
|---|
| 856 | # note that this metadata is associated with the top level section
|
|---|
| 857 |
|
|---|
| 858 | my $associate_tail_re = $self->{'associate_tail_re'};
|
|---|
| 859 |
|
|---|
| 860 | $self->extra_metadata ($doc_obj, $doc_obj->get_top_section(), $metadata);
|
|---|
| 861 |
|
|---|
| 862 | # do plugin specific processing of doc_obj
|
|---|
| 863 | unless (defined ($self->process (\$text, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli))) {
|
|---|
| 864 | $text = '';
|
|---|
| 865 | undef $text;
|
|---|
| 866 | print STDERR "<ProcessingError n='$file'>\n" if ($gli);
|
|---|
| 867 | return (-1,undef);
|
|---|
| 868 | }
|
|---|
| 869 | $text='';
|
|---|
| 870 | undef $text;
|
|---|
| 871 |
|
|---|
| 872 | # do any automatic metadata extraction
|
|---|
| 873 | $self->auto_extract_metadata ($doc_obj);
|
|---|
| 874 |
|
|---|
| 875 | # add an OID
|
|---|
| 876 | # see if there is a plugin-specific set_OID function...
|
|---|
| 877 | if (defined ($self->can('set_OID'))) {
|
|---|
| 878 | # it will need $doc_obj to set the Identifier metadata...
|
|---|
| 879 | $self->set_OID($doc_obj);
|
|---|
| 880 | } else {
|
|---|
| 881 | # use the default set_OID() in doc.pm
|
|---|
| 882 | $doc_obj->set_OID();
|
|---|
| 883 | }
|
|---|
| 884 |
|
|---|
| 885 | return (1,$doc_obj);
|
|---|
| 886 | }
|
|---|
| 887 |
|
|---|
| 888 |
|
|---|
| 889 | # The BasPlug read() function. This function calls read_into_doc_obj()
|
|---|
| 890 | # to ensure all the right things to make general options work for a
|
|---|
| 891 | # given plugin are done. It then calls the process() function which
|
|---|
| 892 | # does all the work specific to a plugin (like the old read functions
|
|---|
| 893 | # used to do). Most plugins should define their own process() function
|
|---|
| 894 | # and let this read() function keep control.
|
|---|
| 895 | #
|
|---|
| 896 | # recursive plugins (e.g. RecPlug) and specialized plugins like those
|
|---|
| 897 | # capable of processing many documents within a single file (e.g.
|
|---|
| 898 | # GMLPlug) might want to implement their own version of read(), but
|
|---|
| 899 | # more likely need to implement their own version of read_into_doc_obj()
|
|---|
| 900 | #
|
|---|
| 901 | # Return number of files processed, undef if can't recognise, -1 if can't
|
|---|
| 902 | # process
|
|---|
| 903 |
|
|---|
| 904 | sub read {
|
|---|
| 905 | my $self = shift (@_);
|
|---|
| 906 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
|
|---|
| 907 |
|
|---|
| 908 | my ($process_status,$doc_obj) = $self->read_into_doc_obj(@_);
|
|---|
| 909 |
|
|---|
| 910 | if ((defined $process_status) && ($process_status == 1)) {
|
|---|
| 911 | # process the document
|
|---|
| 912 | $processor->process($doc_obj);
|
|---|
| 913 |
|
|---|
| 914 | if(defined($self->{'places_filename'})){
|
|---|
| 915 | &util::rm($self->{'places_filename'});
|
|---|
| 916 | $self->{'places_filename'} = undef;
|
|---|
| 917 | }
|
|---|
| 918 |
|
|---|
| 919 | $self->{'num_processed'} ++;
|
|---|
| 920 | undef $doc_obj;
|
|---|
| 921 | }
|
|---|
| 922 |
|
|---|
| 923 | # if process_status == 1, then the file has been processed.
|
|---|
| 924 | return $process_status;
|
|---|
| 925 |
|
|---|
| 926 | }
|
|---|
| 927 |
|
|---|
| 928 | # returns undef if file is rejected by the plugin
|
|---|
| 929 | sub process {
|
|---|
| 930 | my $self = shift (@_);
|
|---|
| 931 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
|
|---|
| 932 |
|
|---|
| 933 | gsprintf(STDERR, "BasPlug::process {common.must_be_implemented}\n") && die "\n";
|
|---|
| 934 | # die "Basplug::process function must be implemented in sub-class\n";
|
|---|
| 935 |
|
|---|
| 936 | return undef; # never gets here
|
|---|
| 937 | }
|
|---|
| 938 |
|
|---|
| 939 | # uses the multiread package to read in the entire file pointed to
|
|---|
| 940 | # by filename and loads the resulting text into $$textref. Input text
|
|---|
| 941 | # may be in any of the encodings handled by multiread, output text
|
|---|
| 942 | # will be in utf8
|
|---|
| 943 | sub read_file {
|
|---|
| 944 | my $self = shift (@_);
|
|---|
| 945 | my ($filename, $encoding, $language, $textref) = @_;
|
|---|
| 946 |
|
|---|
| 947 | if (!-r $filename)
|
|---|
| 948 | {
|
|---|
| 949 | my $outhandle = $self->{'outhandle'};
|
|---|
| 950 | gsprintf($outhandle, "{BasPlug.read_denied}\n", $filename) if $self->{'verbosity'};
|
|---|
| 951 | # print $outhandle "Read permission denied for $filename\n" if $self->{'verbosity'};
|
|---|
| 952 | return;
|
|---|
| 953 | }
|
|---|
| 954 | $$textref = "";
|
|---|
| 955 | if (!open (FILE, $filename)) {
|
|---|
| 956 | gsprintf(STDERR, "BasPlug::read_file {BasPlug.could_not_open_for_reading} ($!)\n", $filename);
|
|---|
| 957 | die "\n";
|
|---|
| 958 | }
|
|---|
| 959 |
|
|---|
| 960 | if ($encoding eq "ascii") {
|
|---|
| 961 | undef $/;
|
|---|
| 962 | $$textref = <FILE>;
|
|---|
| 963 | $/ = "\n";
|
|---|
| 964 | } else {
|
|---|
| 965 | my $reader = new multiread();
|
|---|
| 966 | $reader->set_handle ('BasPlug::FILE');
|
|---|
| 967 | $reader->set_encoding ($encoding);
|
|---|
| 968 | $reader->read_file ($textref);
|
|---|
| 969 | #Now segments chinese if the separate_cjk option is set
|
|---|
| 970 | if ($self->{'separate_cjk'}) {
|
|---|
| 971 | # segment the Chinese words
|
|---|
| 972 | $$textref = &cnseg::segment($$textref);
|
|---|
| 973 | }
|
|---|
| 974 | }
|
|---|
| 975 | close FILE;
|
|---|
| 976 | }
|
|---|
| 977 |
|
|---|
| 978 | # write_file -- used by ConvertToPlug, for example in post processing
|
|---|
| 979 | #
|
|---|
| 980 | sub utf8_write_file {
|
|---|
| 981 | my $self = shift (@_);
|
|---|
| 982 | my ($textref, $filename) = @_;
|
|---|
| 983 |
|
|---|
| 984 | if (!open (FILE, ">$filename")) {
|
|---|
| 985 | gsprintf(STDERR, "ConvertToPlug::write_file {ConvertToPlug.could_not_open_for_writing} ($!)\n", $filename);
|
|---|
| 986 | die "\n";
|
|---|
| 987 | }
|
|---|
| 988 | print FILE $$textref;
|
|---|
| 989 |
|
|---|
| 990 | close FILE;
|
|---|
| 991 | }
|
|---|
| 992 |
|
|---|
| 993 |
|
|---|
| 994 | sub filename_based_title
|
|---|
| 995 | {
|
|---|
| 996 | my $self = shift (@_);
|
|---|
| 997 | my ($file) = @_;
|
|---|
| 998 |
|
|---|
| 999 | my $file_derived_title = $file;
|
|---|
| 1000 | $file_derived_title =~ s/_/ /g;
|
|---|
| 1001 | $file_derived_title =~ s/\..*?$//;
|
|---|
| 1002 |
|
|---|
| 1003 | return $file_derived_title;
|
|---|
| 1004 | }
|
|---|
| 1005 |
|
|---|
| 1006 |
|
|---|
| 1007 | sub title_fallback
|
|---|
| 1008 | {
|
|---|
| 1009 | my $self = shift (@_);
|
|---|
| 1010 | my ($doc_obj,$section,$file) = @_;
|
|---|
| 1011 |
|
|---|
| 1012 | if (!defined $doc_obj->get_metadata_element ($section, "Title")) {
|
|---|
| 1013 |
|
|---|
| 1014 | my $file_derived_title = $self->filename_based_title($file);
|
|---|
| 1015 | $doc_obj->add_metadata ($section, "Title", $file_derived_title);
|
|---|
| 1016 | }
|
|---|
| 1017 | }
|
|---|
| 1018 |
|
|---|
| 1019 | sub textcat_get_language_encoding {
|
|---|
| 1020 | my $self = shift (@_);
|
|---|
| 1021 | my ($filename) = @_;
|
|---|
| 1022 |
|
|---|
| 1023 |
|
|---|
| 1024 | my ($language, $encoding, $extracted_encoding);
|
|---|
| 1025 | if ($self->{'input_encoding'} eq "auto") {
|
|---|
| 1026 | # use textcat to automatically work out the input encoding and language
|
|---|
| 1027 | ($language, $encoding) = $self->get_language_encoding ($filename);
|
|---|
| 1028 | } elsif ($self->{'extract_language'}) {
|
|---|
| 1029 | # use textcat to get language metadata
|
|---|
| 1030 | ($language, $extracted_encoding) = $self->get_language_encoding ($filename);
|
|---|
| 1031 | $encoding = $self->{'input_encoding'};
|
|---|
| 1032 | # don't print this message for english... english in utf8 is identical
|
|---|
| 1033 | # to english in iso-8859-1 (except for some punctuation). We don't have
|
|---|
| 1034 | # a language model for en_utf8, so textcat always says iso-8859-1!
|
|---|
| 1035 | if ($extracted_encoding ne $encoding && $language ne "en"
|
|---|
| 1036 | && $self->{'verbosity'}) {
|
|---|
| 1037 | my $plugin_name = ref ($self);
|
|---|
| 1038 | my $outhandle = $self->{'outhandle'};
|
|---|
| 1039 | gsprintf($outhandle, "$plugin_name: {BasPlug.wrong_encoding}\n", $filename, $encoding, $extracted_encoding);
|
|---|
| 1040 | }
|
|---|
| 1041 | } else {
|
|---|
| 1042 | $language = $self->{'default_language'};
|
|---|
| 1043 | $encoding = $self->{'input_encoding'};
|
|---|
| 1044 | }
|
|---|
| 1045 |
|
|---|
| 1046 | return ($language, $encoding);
|
|---|
| 1047 | }
|
|---|
| 1048 |
|
|---|
| 1049 | # Uses textcat to work out the encoding and language of the text in
|
|---|
| 1050 | # $filename. All html tags are removed before processing.
|
|---|
| 1051 | # returns an array containing "language" and "encoding"
|
|---|
| 1052 | sub get_language_encoding {
|
|---|
| 1053 | my $self = shift (@_);
|
|---|
| 1054 | my ($filename) = @_;
|
|---|
| 1055 | my $outhandle = $self->{'outhandle'};
|
|---|
| 1056 | my $unicode_format = "";
|
|---|
| 1057 | my $best_language = "";
|
|---|
| 1058 | my $best_encoding = "";
|
|---|
| 1059 |
|
|---|
| 1060 | # read in file
|
|---|
| 1061 | if (!open (FILE, $filename)) {
|
|---|
| 1062 | gsprintf(STDERR, "BasPlug::get_language_encoding {BasPlug.could_not_open_for_reading} ($!)\n", $filename);
|
|---|
| 1063 | # this is a pretty bad error, but try to continue anyway
|
|---|
| 1064 | return ($self->{'default_language'}, $self->{'input_encoding'});
|
|---|
| 1065 | }
|
|---|
| 1066 | undef $/;
|
|---|
| 1067 | my $text = <FILE>;
|
|---|
| 1068 | $/ = "\n";
|
|---|
| 1069 | close FILE;
|
|---|
| 1070 |
|
|---|
| 1071 | # check if first few bytes have a Byte Order Marker
|
|---|
| 1072 | my $bom=substr($text,0,2); # check 16bit unicode
|
|---|
| 1073 | if ($bom eq "\xff\xfe") { # little endian 16bit unicode
|
|---|
| 1074 | $unicode_format="unicode";
|
|---|
| 1075 | } elsif ($bom eq "\xfe\xff") { # big endian 16bit unicode
|
|---|
| 1076 | $unicode_format="unicode";
|
|---|
| 1077 | } else {
|
|---|
| 1078 | $bom=substr($text,0,3); # check utf-8
|
|---|
| 1079 | if ($bom eq "\xef\xbb\xbf") { # utf-8 coded FEFF bom
|
|---|
| 1080 | $unicode_format="utf8";
|
|---|
| 1081 | # } elsif ($bom eq "\xef\xbf\xbe") { # utf-8 coded FFFE bom. Error!?
|
|---|
| 1082 | # $unicode_format="utf8";
|
|---|
| 1083 | }
|
|---|
| 1084 | }
|
|---|
| 1085 |
|
|---|
| 1086 |
|
|---|
| 1087 | # handle html files specially
|
|---|
| 1088 | # XXX this doesn't match plugins derived from HTMLPlug (except ConvertTo)
|
|---|
| 1089 | if (ref($self) eq 'HTMLPlug' ||
|
|---|
| 1090 | (exists $self->{'converted_to'} && $self->{'converted_to'} eq 'HTML')){
|
|---|
| 1091 |
|
|---|
| 1092 | # remove <title>stuff</title> -- as titles tend often to be in English
|
|---|
| 1093 | # for foreign language documents
|
|---|
| 1094 | $text =~ s!<title>.*?</title>!!si;
|
|---|
| 1095 |
|
|---|
| 1096 | # see if this html file specifies its encoding
|
|---|
| 1097 | if ($text =~ /^<\?xml.*encoding="(.+?)"/) {
|
|---|
| 1098 | $best_encoding = $1;
|
|---|
| 1099 | } elsif ($text =~ /<meta http-equiv.*content-type.*charset=(.+?)"/i) {
|
|---|
| 1100 | $best_encoding = $1;
|
|---|
| 1101 | }
|
|---|
| 1102 | if ($best_encoding) { # we extracted an encoding
|
|---|
| 1103 | $best_encoding =~ s/-+/_/g;
|
|---|
| 1104 | $best_encoding = lc($best_encoding); # lowercase
|
|---|
| 1105 | if ($best_encoding eq "utf_8") { $best_encoding = "utf8" }
|
|---|
| 1106 | $self->{'input_encoding'} = $best_encoding;
|
|---|
| 1107 | }
|
|---|
| 1108 |
|
|---|
| 1109 | # remove all HTML tags
|
|---|
| 1110 | $text =~ s/<[^>]*>//sg;
|
|---|
| 1111 | }
|
|---|
| 1112 |
|
|---|
| 1113 | # get the language/encoding
|
|---|
| 1114 | my $results = $self->{'textcat'}->classify(\$text);
|
|---|
| 1115 |
|
|---|
| 1116 | # if textcat returns 3 or less possibilities we'll use the
|
|---|
| 1117 | # first one in the list - otherwise use the defaults
|
|---|
| 1118 | if (scalar @$results > 3) {
|
|---|
| 1119 | if ($unicode_format) { # in case the first had a BOM
|
|---|
| 1120 | $best_encoding=$unicode_format;
|
|---|
| 1121 | } else {
|
|---|
| 1122 | my %guessed_encodings = ();
|
|---|
| 1123 | foreach my $result (@$results) {
|
|---|
| 1124 | $result =~ /([^\-]+)$/;
|
|---|
| 1125 | my $enc=$1;
|
|---|
| 1126 | if (!defined($guessed_encodings{$enc})) {
|
|---|
| 1127 | $guessed_encodings{$enc}=0;
|
|---|
| 1128 | }
|
|---|
| 1129 | $guessed_encodings{$enc}++;
|
|---|
| 1130 | }
|
|---|
| 1131 |
|
|---|
| 1132 | $guessed_encodings{""}=-1; # for default best_encoding of ""
|
|---|
| 1133 | foreach my $enc (keys %guessed_encodings) {
|
|---|
| 1134 | if ($guessed_encodings{$enc} >
|
|---|
| 1135 | $guessed_encodings{$best_encoding}){
|
|---|
| 1136 | $best_encoding=$enc;
|
|---|
| 1137 | }
|
|---|
| 1138 | }
|
|---|
| 1139 | }
|
|---|
| 1140 |
|
|---|
| 1141 | if ($self->{'input_encoding'} ne 'auto') {
|
|---|
| 1142 | if ($self->{'extract_language'} && ($self->{'verbosity'}>2)) {
|
|---|
| 1143 | gsprintf($outhandle,
|
|---|
| 1144 | "BasPlug: {BasPlug.could_not_extract_language}\n",
|
|---|
| 1145 | $filename, $self->{'default_language'});
|
|---|
| 1146 | }
|
|---|
| 1147 | $best_language = $self->{'default_language'};
|
|---|
| 1148 | $best_encoding = $self->{'input_encoding'};
|
|---|
| 1149 |
|
|---|
| 1150 | } else {
|
|---|
| 1151 | if ($self->{'verbosity'}>2) {
|
|---|
| 1152 | gsprintf($outhandle,
|
|---|
| 1153 | "BasPlug: {BasPlug.could_not_extract_language}\n",
|
|---|
| 1154 | $filename, $self->{'default_language'});
|
|---|
| 1155 | }
|
|---|
| 1156 | $best_language = $self->{'default_language'};
|
|---|
| 1157 | }
|
|---|
| 1158 | } else { # <= 3 suggestions
|
|---|
| 1159 | my ($language, $encoding) = $results->[0] =~ /^([^-]*)(?:-(.*))?$/;
|
|---|
| 1160 | if (!defined $language) {
|
|---|
| 1161 | if ($self->{'verbosity'}>2) {
|
|---|
| 1162 | gsprintf($outhandle,
|
|---|
| 1163 | "BasPlug: {BasPlug.could_not_extract_language}\n",
|
|---|
| 1164 | $filename, $self->{'default_language'});
|
|---|
| 1165 | }
|
|---|
| 1166 | $language = $self->{'default_language'};
|
|---|
| 1167 | }
|
|---|
| 1168 | if (!defined $encoding) {
|
|---|
| 1169 | if ($self->{'verbosity'}>2) {
|
|---|
| 1170 | gsprintf($outhandle,
|
|---|
| 1171 | "BasPlug: {BasPlug.could_not_extract_encoding}\n",
|
|---|
| 1172 | $filename, $self->{'default_encoding'});
|
|---|
| 1173 | }
|
|---|
| 1174 | $encoding = $self->{'default_encoding'};
|
|---|
| 1175 | }
|
|---|
| 1176 | $best_language = $language;
|
|---|
| 1177 | if (! $best_encoding ) { # may already be set... eg from html meta tag
|
|---|
| 1178 | $best_encoding = $encoding;
|
|---|
| 1179 | }
|
|---|
| 1180 | }
|
|---|
| 1181 |
|
|---|
| 1182 | my $text_copy = $text;
|
|---|
| 1183 | if ($best_encoding =~ /^iso_8859/ && unicode::ensure_utf8(\$text_copy)==0) {
|
|---|
| 1184 | # the text is valid utf8, so assume that's the real encoding
|
|---|
| 1185 | # (since textcat is based on probabilities)
|
|---|
| 1186 | $best_encoding = 'utf8';
|
|---|
| 1187 | }
|
|---|
| 1188 |
|
|---|
| 1189 | # check for equivalents where textcat doesn't have some encodings...
|
|---|
| 1190 | # eg MS versions of standard encodings
|
|---|
| 1191 | if ($best_encoding =~ /^iso_8859_(\d+)/) {
|
|---|
| 1192 | my $iso = $1; # which variant of the iso standard?
|
|---|
| 1193 | # iso-8859 sets don't use chars 0x80-0x9f, windows codepages do
|
|---|
| 1194 | if ($text =~ /[\x80-\x9f]/) {
|
|---|
| 1195 | # Western Europe
|
|---|
| 1196 | if ($iso == 1 or $iso == 15) { $best_encoding = 'windows_1252' }
|
|---|
| 1197 | elsif ($iso == 2) {$best_encoding = 'windows_1250'} # Central Europe
|
|---|
| 1198 | elsif ($iso == 5) {$best_encoding = 'windows_1251'} # Cyrillic
|
|---|
| 1199 | elsif ($iso == 6) {$best_encoding = 'windows_1256'} # Arabic
|
|---|
| 1200 | elsif ($iso == 7) {$best_encoding = 'windows_1253'} # Greek
|
|---|
| 1201 | elsif ($iso == 8) {$best_encoding = 'windows_1255'} # Hebrew
|
|---|
| 1202 | elsif ($iso == 9) {$best_encoding = 'windows_1254'} # Turkish
|
|---|
| 1203 | }
|
|---|
| 1204 | }
|
|---|
| 1205 |
|
|---|
| 1206 | if ($best_encoding !~ /^(ascii|utf8|unicode)$/ &&
|
|---|
| 1207 | !defined $encodings::encodings->{$best_encoding}) {
|
|---|
| 1208 | if ($self->{'verbosity'}) {
|
|---|
| 1209 | gsprintf($outhandle, "BasPlug: {BasPlug.unsupported_encoding}\n",
|
|---|
| 1210 | $filename, $best_encoding, $self->{'default_encoding'});
|
|---|
| 1211 | }
|
|---|
| 1212 | $best_encoding = $self->{'default_encoding'};
|
|---|
| 1213 | }
|
|---|
| 1214 |
|
|---|
| 1215 | return ($best_language, $best_encoding);
|
|---|
| 1216 | }
|
|---|
| 1217 |
|
|---|
| 1218 | # add any extra metadata that's been passed around from one
|
|---|
| 1219 | # plugin to another.
|
|---|
| 1220 | # extra_metadata uses add_utf8_metadata so it expects metadata values
|
|---|
| 1221 | # to already be in utf8
|
|---|
| 1222 | sub extra_metadata {
|
|---|
| 1223 | my $self = shift (@_);
|
|---|
| 1224 | my ($doc_obj, $cursection, $metadata) = @_;
|
|---|
| 1225 |
|
|---|
| 1226 | my $associate_tail_re = $self->{'associate_tail_re'};
|
|---|
| 1227 |
|
|---|
| 1228 | foreach my $field (keys(%$metadata)) {
|
|---|
| 1229 | # $metadata->{$field} may be an array reference
|
|---|
| 1230 | if ($field eq "gsdlassocfile_tobe") {
|
|---|
| 1231 | # 'gsdlassocfile_tobe' is artificially introduced metadata
|
|---|
| 1232 | # that is used to signal that certain additional files should
|
|---|
| 1233 | # be tied to this document. Useful in situations where a
|
|---|
| 1234 | # metadata pass in the plugin pipeline works out some files
|
|---|
| 1235 | # need to be associated with a document, but the document hasn't
|
|---|
| 1236 | # been formed yet.
|
|---|
| 1237 |
|
|---|
| 1238 | my $equiv_form = "";
|
|---|
| 1239 | foreach my $gaf (@{$metadata->{$field}}) {
|
|---|
| 1240 | my ($full_filename,$mimetype) = ($gaf =~ m/^(.*):(.*):$/);
|
|---|
| 1241 | my ($tail_filename) = ($full_filename =~ /^.*[\/\\](.+?)$/);
|
|---|
| 1242 | my $filename = $full_filename;
|
|---|
| 1243 |
|
|---|
| 1244 | $doc_obj->associate_file($full_filename,$tail_filename,$mimetype);
|
|---|
| 1245 |
|
|---|
| 1246 | # work out extended tail extension (i.e. matching tail re)
|
|---|
| 1247 |
|
|---|
| 1248 | my ($file_prefix,$file_extended_ext)
|
|---|
| 1249 | = $self->root_ext_split($tail_filename,$associate_tail_re);
|
|---|
| 1250 | my ($pre_doc_ext) = ($file_extended_ext =~ m/^(.*)\..*$/);
|
|---|
| 1251 |
|
|---|
| 1252 | my ($doc_ext) = ($tail_filename =~ m/^.*\.(.*)$/);
|
|---|
| 1253 | my $start_doclink = "<a href=\"_httpcollection_/index/assoc/{Or}{[parent(Top):archivedir],[archivedir]}/$tail_filename\">";
|
|---|
| 1254 | my $srcicon = "_icon".$doc_ext."_";
|
|---|
| 1255 | my $end_doclink = "</a>";
|
|---|
| 1256 |
|
|---|
| 1257 | my $assoc_form = "$start_doclink\{If\}{$srcicon,$srcicon,$doc_ext\}$end_doclink";
|
|---|
| 1258 |
|
|---|
| 1259 | if (defined $pre_doc_ext) {
|
|---|
| 1260 | # for metadata such as [mp3._edited] [mp3._full] ...
|
|---|
| 1261 | $doc_obj->add_utf8_metadata ($cursection, "$doc_ext.$pre_doc_ext", $assoc_form);
|
|---|
| 1262 | }
|
|---|
| 1263 |
|
|---|
| 1264 | # for multiple metadata such as [mp3.assoclink]
|
|---|
| 1265 | $doc_obj->add_utf8_metadata ($cursection, "$doc_ext.assoclink", $assoc_form);
|
|---|
| 1266 |
|
|---|
| 1267 | $equiv_form .= " $assoc_form";
|
|---|
| 1268 | }
|
|---|
| 1269 | $doc_obj->add_utf8_metadata ($cursection, "equivlink", $equiv_form);
|
|---|
| 1270 | }
|
|---|
| 1271 | elsif (ref ($metadata->{$field}) eq "ARRAY") {
|
|---|
| 1272 | map {
|
|---|
| 1273 | $doc_obj->add_utf8_metadata ($cursection, $field, $_);
|
|---|
| 1274 | } @{$metadata->{$field}};
|
|---|
| 1275 | } else {
|
|---|
| 1276 | $doc_obj->add_utf8_metadata ($cursection, $field, $metadata->{$field});
|
|---|
| 1277 | }
|
|---|
| 1278 | }
|
|---|
| 1279 | }
|
|---|
| 1280 |
|
|---|
| 1281 | # initialise metadata extractors
|
|---|
| 1282 | sub initialise_extractors {
|
|---|
| 1283 | my $self = shift (@_);
|
|---|
| 1284 |
|
|---|
| 1285 | if ($self->{'extract_acronyms'} || $self->{'markup_acronyms'}) {
|
|---|
| 1286 | &acronym::initialise_acronyms();
|
|---|
| 1287 | }
|
|---|
| 1288 | }
|
|---|
| 1289 |
|
|---|
| 1290 | # finalise metadata extractors
|
|---|
| 1291 | sub finalise_extractors {
|
|---|
| 1292 | my $self = shift (@_);
|
|---|
| 1293 |
|
|---|
| 1294 | if ($self->{'extract_acronyms'} || $self->{'markup_acronyms'}) {
|
|---|
| 1295 | &acronym::finalise_acronyms();
|
|---|
| 1296 | }
|
|---|
| 1297 | }
|
|---|
| 1298 |
|
|---|
| 1299 | # FIRSTNNN: extract the first NNN characters as metadata
|
|---|
| 1300 | sub extract_first_NNNN_characters {
|
|---|
| 1301 | my $self = shift (@_);
|
|---|
| 1302 | my ($textref, $doc_obj, $thissection) = @_;
|
|---|
| 1303 |
|
|---|
| 1304 | foreach my $size (split /,/, $self->{'first'}) {
|
|---|
| 1305 | my $tmptext = $$textref;
|
|---|
| 1306 | $tmptext =~ s/^\s+//;
|
|---|
| 1307 | $tmptext =~ s/\s+$//;
|
|---|
| 1308 | $tmptext =~ s/\s+/ /gs;
|
|---|
| 1309 | $tmptext = substr ($tmptext, 0, $size);
|
|---|
| 1310 | $tmptext =~ s/\s\S*$/…/;
|
|---|
| 1311 | $doc_obj->add_utf8_metadata ($thissection, "First$size", $tmptext);
|
|---|
| 1312 | }
|
|---|
| 1313 | }
|
|---|
| 1314 |
|
|---|
| 1315 | sub extract_email {
|
|---|
| 1316 | my $self = shift (@_);
|
|---|
| 1317 | my ($textref, $doc_obj, $thissection) = @_;
|
|---|
| 1318 | my $outhandle = $self->{'outhandle'};
|
|---|
| 1319 |
|
|---|
| 1320 | gsprintf($outhandle, " {BasPlug.extracting_emails}...\n")
|
|---|
| 1321 | if ($self->{'verbosity'} > 2);
|
|---|
| 1322 |
|
|---|
| 1323 | my @email = ($$textref =~ m/([-a-z0-9\.@+_=]+@(?:[-a-z0-9]+\.)+(?:com|org|edu|mil|int|net|[a-z][a-z]))/g);
|
|---|
| 1324 | @email = sort @email;
|
|---|
| 1325 |
|
|---|
| 1326 | # if($self->{"new_extract_email"} == 0)
|
|---|
| 1327 | # {
|
|---|
| 1328 | # my @email2 = ();
|
|---|
| 1329 | # foreach my $address (@email)
|
|---|
| 1330 | # {
|
|---|
| 1331 | # if (!(join(" ",@email2) =~ m/(^| )$address( |$)/ ))
|
|---|
| 1332 | # {
|
|---|
| 1333 | # push @email2, $address;
|
|---|
| 1334 | # $doc_obj->add_utf8_metadata ($thissection, "emailAddress", $address);
|
|---|
| 1335 | # # print $outhandle " extracting $address\n"
|
|---|
| 1336 | # &gsprintf($outhandle, " {BasPlug.extracting} $address\n")
|
|---|
| 1337 | # if ($self->{'verbosity'} > 3);
|
|---|
| 1338 | # }
|
|---|
| 1339 | # }
|
|---|
| 1340 | # }
|
|---|
| 1341 | # else
|
|---|
| 1342 | # {
|
|---|
| 1343 | my $hashExistMail = {};
|
|---|
| 1344 | foreach my $address (@email) {
|
|---|
| 1345 | if (!(defined $hashExistMail->{$address}))
|
|---|
| 1346 | {
|
|---|
| 1347 | $hashExistMail->{$address} = 1;
|
|---|
| 1348 | $doc_obj->add_utf8_metadata ($thissection, "emailAddress", $address);
|
|---|
| 1349 | gsprintf($outhandle, " {BasPlug.extracting} $address\n")
|
|---|
| 1350 | if ($self->{'verbosity'} > 3);
|
|---|
| 1351 | }
|
|---|
| 1352 | }
|
|---|
| 1353 | gsprintf($outhandle, " {BasPlug.done_email_extract}\n")
|
|---|
| 1354 | if ($self->{'verbosity'} > 2);
|
|---|
| 1355 | }
|
|---|
| 1356 |
|
|---|
| 1357 | # extract metadata
|
|---|
| 1358 | sub auto_extract_metadata {
|
|---|
| 1359 |
|
|---|
| 1360 | my $self = shift (@_);
|
|---|
| 1361 | my ($doc_obj) = @_;
|
|---|
| 1362 |
|
|---|
| 1363 | if ($self->{'extract_email'}) {
|
|---|
| 1364 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 1365 | while (defined $thissection) {
|
|---|
| 1366 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 1367 | $self->extract_email (\$text, $doc_obj, $thissection) if $text =~ /./;
|
|---|
| 1368 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 1369 | }
|
|---|
| 1370 | }
|
|---|
| 1371 | if ($self->{'extract_placenames'}) {
|
|---|
| 1372 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 1373 | while (defined $thissection) {
|
|---|
| 1374 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 1375 | $self->extract_placenames (\$text, $doc_obj, $thissection) if $text =~ /./;
|
|---|
| 1376 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 1377 | }
|
|---|
| 1378 | }
|
|---|
| 1379 |
|
|---|
| 1380 | if ($self->{'extract_keyphrases'} || $self->{'extract_keyphrases_kea4'}) {
|
|---|
| 1381 | $self->extract_keyphrases($doc_obj);
|
|---|
| 1382 | }
|
|---|
| 1383 |
|
|---|
| 1384 | if ($self->{'first'}) {
|
|---|
| 1385 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 1386 | while (defined $thissection) {
|
|---|
| 1387 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 1388 | $self->extract_first_NNNN_characters (\$text, $doc_obj, $thissection) if $text =~ /./;
|
|---|
| 1389 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 1390 | }
|
|---|
| 1391 | }
|
|---|
| 1392 |
|
|---|
| 1393 | if ($self->{'extract_acronyms'}) {
|
|---|
| 1394 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 1395 | while (defined $thissection) {
|
|---|
| 1396 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 1397 | $self->extract_acronyms (\$text, $doc_obj, $thissection) if $text =~ /./;
|
|---|
| 1398 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 1399 | }
|
|---|
| 1400 | }
|
|---|
| 1401 |
|
|---|
| 1402 | if ($self->{'markup_acronyms'}) {
|
|---|
| 1403 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 1404 | while (defined $thissection) {
|
|---|
| 1405 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 1406 | $text = $self->markup_acronyms ($text, $doc_obj, $thissection);
|
|---|
| 1407 | $doc_obj->delete_text($thissection);
|
|---|
| 1408 | $doc_obj->add_text($thissection, $text);
|
|---|
| 1409 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 1410 | }
|
|---|
| 1411 | }
|
|---|
| 1412 |
|
|---|
| 1413 | if($self->{'extract_historical_years'}) {
|
|---|
| 1414 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 1415 | while (defined $thissection) {
|
|---|
| 1416 |
|
|---|
| 1417 | my $text = $doc_obj->get_text($thissection);
|
|---|
| 1418 | &DateExtract::get_date_metadata($text, $doc_obj,
|
|---|
| 1419 | $thissection,
|
|---|
| 1420 | $self->{'no_bibliography'},
|
|---|
| 1421 | $self->{'maximum_year'},
|
|---|
| 1422 | $self->{'maximum_century'});
|
|---|
| 1423 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 1424 | }
|
|---|
| 1425 | }
|
|---|
| 1426 | }
|
|---|
| 1427 |
|
|---|
| 1428 |
|
|---|
| 1429 | #adding kea keyphrases
|
|---|
| 1430 | sub extract_keyphrases
|
|---|
| 1431 | {
|
|---|
| 1432 | my $self = shift(@_);
|
|---|
| 1433 | my $doc_obj = shift(@_);
|
|---|
| 1434 |
|
|---|
| 1435 | # Use Kea 3.0 unless 4.0 has been specified
|
|---|
| 1436 | my $kea_version = "3.0";
|
|---|
| 1437 | if ($self->{'extract_keyphrases_kea4'}) {
|
|---|
| 1438 | $kea_version = "4.0";
|
|---|
| 1439 | }
|
|---|
| 1440 |
|
|---|
| 1441 | # Check that Kea exists, and tell the user where to get it if not
|
|---|
| 1442 | my $keahome = &Kea::get_Kea_directory($kea_version);
|
|---|
| 1443 | if (!-e $keahome) {
|
|---|
| 1444 | gsprintf(STDERR, "{BasPlug.missing_kea}\n", $keahome, $kea_version);
|
|---|
| 1445 | return;
|
|---|
| 1446 | }
|
|---|
| 1447 |
|
|---|
| 1448 | my $thissection = $doc_obj->get_top_section();
|
|---|
| 1449 | my $text = "";
|
|---|
| 1450 | my $list;
|
|---|
| 1451 |
|
|---|
| 1452 | #loop through sections to gather whole doc
|
|---|
| 1453 | while (defined $thissection) {
|
|---|
| 1454 | my $sectiontext = $doc_obj->get_text($thissection);
|
|---|
| 1455 | $text = $text.$sectiontext;
|
|---|
| 1456 | $thissection = $doc_obj->get_next_section ($thissection);
|
|---|
| 1457 | }
|
|---|
| 1458 |
|
|---|
| 1459 | if($self->{'extract_keyphrase_options'}) { #if kea options flag is set, call Kea with specified options
|
|---|
| 1460 | $list = &Kea::extract_KeyPhrases ($kea_version, $text, $self->{'extract_keyphrase_options'});
|
|---|
| 1461 | } else { #otherwise call Kea with no options
|
|---|
| 1462 | $list = &Kea::extract_KeyPhrases ($kea_version, $text);
|
|---|
| 1463 | }
|
|---|
| 1464 |
|
|---|
| 1465 | if ($list){
|
|---|
| 1466 | # if a list of kea keyphrases was returned (ie not empty)
|
|---|
| 1467 | if ($self->{'verbosity'}) {
|
|---|
| 1468 | gsprintf(STDERR, "{BasPlug.keyphrases}: $list\n");
|
|---|
| 1469 | }
|
|---|
| 1470 |
|
|---|
| 1471 | #add metadata to top section
|
|---|
| 1472 | $thissection = $doc_obj->get_top_section();
|
|---|
| 1473 |
|
|---|
| 1474 | # add all key phrases as one metadata
|
|---|
| 1475 | $doc_obj->add_metadata($thissection, "Keyphrases", $list);
|
|---|
| 1476 |
|
|---|
| 1477 | # add individual key phrases as multiple metadata
|
|---|
| 1478 | foreach my $keyphrase (split(',', $list)) {
|
|---|
| 1479 | $keyphrase =~ s/^\s+|\s+$//g;
|
|---|
| 1480 | $doc_obj->add_metadata($thissection, "Keyphrase", $keyphrase);
|
|---|
| 1481 | }
|
|---|
| 1482 | }
|
|---|
| 1483 | }
|
|---|
| 1484 |
|
|---|
| 1485 |
|
|---|
| 1486 | # extract acronyms from a section in a document. progress is
|
|---|
| 1487 | # reported to outhandle based on the verbosity. both the Acronym
|
|---|
| 1488 | # and the AcronymKWIC metadata items are created.
|
|---|
| 1489 |
|
|---|
| 1490 | sub extract_acronyms {
|
|---|
| 1491 | my $self = shift (@_);
|
|---|
| 1492 | my ($textref, $doc_obj, $thissection) = @_;
|
|---|
| 1493 | my $outhandle = $self->{'outhandle'};
|
|---|
| 1494 |
|
|---|
| 1495 | # print $outhandle " extracting acronyms ...\n"
|
|---|
| 1496 | gsprintf($outhandle, " {BasPlug.extracting_acronyms}...\n")
|
|---|
| 1497 | if ($self->{'verbosity'} > 2);
|
|---|
| 1498 |
|
|---|
| 1499 | my $acro_array = &acronym::acronyms($textref);
|
|---|
| 1500 |
|
|---|
| 1501 | foreach my $acro (@$acro_array) {
|
|---|
| 1502 |
|
|---|
| 1503 | #check that this is the first time ...
|
|---|
| 1504 | my $seen_before = "false";
|
|---|
| 1505 | my $previous_data = $doc_obj->get_metadata($thissection, "Acronym");
|
|---|
| 1506 | foreach my $thisAcro (@$previous_data) {
|
|---|
| 1507 | if ($thisAcro eq $acro->to_string()) {
|
|---|
| 1508 | $seen_before = "true";
|
|---|
| 1509 | if ($self->{'verbosity'} >= 4) {
|
|---|
| 1510 | gsprintf($outhandle, " {BasPlug.already_seen} " .
|
|---|
| 1511 | $acro->to_string() . "\n");
|
|---|
| 1512 | }
|
|---|
| 1513 | }
|
|---|
| 1514 | }
|
|---|
| 1515 |
|
|---|
| 1516 | if ($seen_before eq "false") {
|
|---|
| 1517 | #write it to the file ...
|
|---|
| 1518 | $acro->write_to_file();
|
|---|
| 1519 |
|
|---|
| 1520 | #do the normal acronym
|
|---|
| 1521 | $doc_obj->add_utf8_metadata($thissection, "Acronym", $acro->to_string());
|
|---|
| 1522 | gsprintf($outhandle, " {BasPlug.adding} ".$acro->to_string()."\n")
|
|---|
| 1523 | if ($self->{'verbosity'} > 3);
|
|---|
| 1524 | }
|
|---|
| 1525 | }
|
|---|
| 1526 |
|
|---|
| 1527 | gsprintf($outhandle, " {BasPlug.done_acronym_extract}\n")
|
|---|
| 1528 | if ($self->{'verbosity'} > 2);
|
|---|
| 1529 | }
|
|---|
| 1530 |
|
|---|
| 1531 | sub markup_acronyms {
|
|---|
| 1532 | my $self = shift (@_);
|
|---|
| 1533 | my ($text, $doc_obj, $thissection) = @_;
|
|---|
| 1534 | my $outhandle = $self->{'outhandle'};
|
|---|
| 1535 |
|
|---|
| 1536 | gsprintf($outhandle, " {BasPlug.marking_up_acronyms}...\n")
|
|---|
| 1537 | if ($self->{'verbosity'} > 2);
|
|---|
| 1538 |
|
|---|
| 1539 | #self is passed in to check for verbosity ...
|
|---|
| 1540 | $text = &acronym::markup_acronyms($text, $self);
|
|---|
| 1541 |
|
|---|
| 1542 | gsprintf($outhandle, " {BasPlug.done_acronym_markup}\n")
|
|---|
| 1543 | if ($self->{'verbosity'} > 2);
|
|---|
| 1544 |
|
|---|
| 1545 | return $text;
|
|---|
| 1546 | }
|
|---|
| 1547 |
|
|---|
| 1548 | sub compile_stats {
|
|---|
| 1549 | my $self = shift(@_);
|
|---|
| 1550 | my ($stats) = @_;
|
|---|
| 1551 |
|
|---|
| 1552 | $stats->{'num_processed'} += $self->{'num_processed'};
|
|---|
| 1553 | $stats->{'num_not_processed'} += $self->{'num_not_processed'};
|
|---|
| 1554 | $stats->{'num_archives'} += $self->{'num_archives'};
|
|---|
| 1555 |
|
|---|
| 1556 | }
|
|---|
| 1557 |
|
|---|
| 1558 | sub associate_cover_image {
|
|---|
| 1559 | my $self = shift;
|
|---|
| 1560 | my ($doc_obj, $filename) = @_;
|
|---|
| 1561 |
|
|---|
| 1562 | $filename =~ s/\.[^\\\/\.]+$/\.jpg/;
|
|---|
| 1563 | if (exists $self->{'covers_missing_cache'}->{$filename}) {
|
|---|
| 1564 | # don't stat() for existence eg for multiple document input files
|
|---|
| 1565 | # (eg SplitPlug)
|
|---|
| 1566 | return;
|
|---|
| 1567 | }
|
|---|
| 1568 |
|
|---|
| 1569 | my $top_section=$doc_obj->get_top_section();
|
|---|
| 1570 |
|
|---|
| 1571 | if (-e $filename) {
|
|---|
| 1572 | $doc_obj->associate_file($filename, "cover.jpg", "image/jpeg");
|
|---|
| 1573 | $doc_obj->add_utf8_metadata($top_section, "hascover", 1);
|
|---|
| 1574 | } else {
|
|---|
| 1575 | my $upper_filename = $filename;
|
|---|
| 1576 | $upper_filename =~ s/jpg$/JPG/;
|
|---|
| 1577 | if (-e $upper_filename) {
|
|---|
| 1578 | $doc_obj->associate_file($upper_filename, "cover.jpg",
|
|---|
| 1579 | "image/jpeg");
|
|---|
| 1580 | $doc_obj->add_utf8_metadata($top_section, "hascover", 1);
|
|---|
| 1581 | } else {
|
|---|
| 1582 | # file doesn't exist, so record the fact that it's missing so
|
|---|
| 1583 | # we don't stat() again (stat is slow)
|
|---|
| 1584 | $self->{'covers_missing_cache'}->{$filename} = 1;
|
|---|
| 1585 | }
|
|---|
| 1586 | }
|
|---|
| 1587 |
|
|---|
| 1588 | }
|
|---|
| 1589 |
|
|---|
| 1590 |
|
|---|
| 1591 | # Overridden by exploding plugins (eg. ISISPlug)
|
|---|
| 1592 | sub clean_up_after_exploding
|
|---|
| 1593 | {
|
|---|
| 1594 | my $self = shift(@_);
|
|---|
| 1595 | }
|
|---|
| 1596 |
|
|---|
| 1597 |
|
|---|
| 1598 | 1;
|
|---|
