[537] | 1 | ###########################################################################
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| 2 | #
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| 3 | # plugin.pm -- functions to handle using 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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[4] | 25 |
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| 26 | package plugin;
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| 27 |
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[7829] | 28 | use strict; # to pick up typos and undeclared variables...
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| 29 | no strict 'refs'; # ...but allow filehandles to be variables and vice versa
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[10579] | 30 | no strict 'subs';
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[7829] | 31 |
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[134] | 32 | require util;
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[7829] | 33 | use gsprintf 'gsprintf';
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[4] | 34 |
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[15873] | 35 | # mapping from old plugin names to new ones for backwards compatibility
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[17032] | 36 | # can remove at sometime in future when we no longer want to support old xxPlug names in the config file
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[15873] | 37 | my $plugin_name_map = {
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| 38 | 'ArcPlug' => 'ArchivesInfPlugin',
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| 39 | 'RecPlug' => 'DirectoryPlugin',
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| 40 | 'TEXTPlug' => 'TextPlugin',
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[17731] | 41 | 'XMLPlug' => 'ReadXMLFile',
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[15873] | 42 | 'EMAILPlug' => 'EmailPlugin',
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| 43 | 'SRCPlug' => 'SourceCodePlugin',
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| 44 | 'NULPlug' => 'NulPlugin',
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[17731] | 45 | 'W3ImgPlug' => 'HTMLImagePlugin',
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[17030] | 46 | 'PagedImgPlug' => 'PagedImagePlugin',
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[17724] | 47 | 'METSPlug' => 'GreenstoneMETSPlugin',
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| 48 | 'PPTPlug' => 'PowerPointPlugin',
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[17731] | 49 | 'PSPlug' => 'PostScriptPlugin',
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[17724] | 50 | 'DBPlug' => 'DatabasePlugin'
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[15873] | 51 | };
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| 52 |
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[7829] | 53 | # global variables
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[2785] | 54 | my $stats = {'num_processed' => 0,
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| 55 | 'num_blocked' => 0,
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| 56 | 'num_not_processed' => 0,
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[7363] | 57 | 'num_not_recognised' => 0,
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[2785] | 58 | 'num_archives' => 0
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| 59 | };
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| 60 |
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[7829] | 61 | #globaloptions contains any options that should be passed to all plugins
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| 62 | my ($verbosity, $outhandle, $failhandle, $globaloptions);
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[5682] | 63 |
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[15873] | 64 | sub get_valid_pluginname {
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| 65 | my ($pluginname) = @_;
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| 66 | my $valid_name = $pluginname;
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| 67 | if (defined $plugin_name_map->{$pluginname}) {
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| 68 | $valid_name = $plugin_name_map->{$pluginname};
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| 69 | } elsif ($pluginname =~ /Plug$/) {
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| 70 | $valid_name =~ s/Plug/Plugin/;
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| 71 |
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| 72 | }
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| 73 | return $valid_name;
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| 74 | }
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[14933] | 75 | sub load_plugin_require
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| 76 | {
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| 77 | my ($pluginname) = @_;
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| 78 |
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| 79 | my @check_list = ();
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| 80 |
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| 81 | # pp_plugname shorthand for 'perllib' 'plugin' '$pluginname.pm'
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| 82 | my $pp_plugname
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| 83 | = &util::filename_cat('perllib', 'plugins', "${pluginname}.pm");
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| 84 | my $collectdir = $ENV{'GSDLCOLLECTDIR'};
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| 85 |
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[10579] | 86 | # find the plugin
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[14239] | 87 | if (defined($ENV{'GSDLCOLLECTION'}))
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| 88 | {
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[14933] | 89 | my $customplugname
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| 90 | = &util::filename_cat($collectdir, "custom",$ENV{'GSDLCOLLECTION'},
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| 91 | $pp_plugname);
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| 92 | push(@check_list,$customplugname);
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[14239] | 93 | }
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[14933] | 94 |
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| 95 | my $colplugname = &util::filename_cat($collectdir, $pp_plugname);
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| 96 | push(@check_list,$colplugname);
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| 97 |
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| 98 | if (defined $ENV{'GSDLEXTS'}) {
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| 99 |
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| 100 | my $ext_prefix = &util::filename_cat($ENV{'GSDLHOME'}, "ext");
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| 101 |
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| 102 | my @extensions = split(/:/,$ENV{'GSDLEXTS'});
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| 103 | foreach my $e (@extensions) {
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| 104 | my $extplugname = &util::filename_cat($ext_prefix, $e, $pp_plugname);
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| 105 | push(@check_list,$extplugname);
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| 106 |
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| 107 | }
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| 108 | }
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| 109 |
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| 110 |
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| 111 | my $mainplugname = &util::filename_cat($ENV{'GSDLHOME'}, $pp_plugname);
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| 112 | push(@check_list,$mainplugname);
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| 113 |
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| 114 | my $success=0;
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| 115 | foreach my $plugname (@check_list) {
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| 116 | if (-e $plugname) {
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| 117 | require $plugname;
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| 118 | $success=1;
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| 119 | last;
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| 120 | }
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| 121 | }
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| 122 |
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| 123 | if (!$success) {
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[10579] | 124 | &gsprintf(STDERR, "{plugin.could_not_find_plugin}\n",
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[14933] | 125 | $pluginname);
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[10579] | 126 | die "\n";
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| 127 | }
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[14933] | 128 | }
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[10579] | 129 |
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[14933] | 130 | sub load_plugin_for_info {
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| 131 | my ($pluginname) = shift @_;
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[15873] | 132 | $pluginname = &get_valid_pluginname($pluginname);
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[14933] | 133 | load_plugin_require($pluginname);
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| 134 |
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[10579] | 135 | # create a plugin object
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| 136 | my ($plugobj);
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| 137 | my $options = "-gsdlinfo";
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| 138 |
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| 139 | eval ("\$plugobj = new \$pluginname([],[$options])");
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| 140 | die "$@" if $@;
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| 141 |
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| 142 | return $plugobj;
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| 143 | }
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| 144 |
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[4] | 145 | sub load_plugins {
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[1431] | 146 | my ($plugin_list) = shift @_;
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[12968] | 147 | my $incremental;
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| 148 | ($verbosity, $outhandle, $failhandle, $globaloptions, $incremental) = @_; # globals
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[4] | 149 | my @plugin_objects = ();
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[12968] | 150 | $incremental = 0 unless (defined $incremental && $incremental == 1);
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[1243] | 151 | $verbosity = 2 unless defined $verbosity;
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[7829] | 152 | $outhandle = 'STDERR' unless defined $outhandle;
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| 153 | $failhandle = 'STDERR' unless defined $failhandle;
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[1243] | 154 |
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[13933] | 155 | my $colplugindir = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},"perllib/plugins");
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| 156 | unshift (@INC, $colplugindir);
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| 157 |
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[6584] | 158 | map { $_ = "\"$_\""; } @$globaloptions;
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| 159 | my $globals = join (",", @$globaloptions);
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| 160 |
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[7829] | 161 | foreach my $pluginoptions (@$plugin_list) {
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[809] | 162 | my $pluginname = shift @$pluginoptions;
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| 163 | next unless defined $pluginname;
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[15873] | 164 | $pluginname = &get_valid_pluginname($pluginname);
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[14933] | 165 | load_plugin_require($pluginname);
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[4] | 166 |
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| 167 | # create a plugin object
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| 168 | my ($plugobj);
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[809] | 169 | map { $_ = "\"$_\""; } @$pluginoptions;
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| 170 | my $options = join (",", @$pluginoptions);
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[6584] | 171 | if ($globals) {
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| 172 | if (@$pluginoptions) {
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| 173 | $options .= ",";
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| 174 | }
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| 175 | $options .= "$globals";
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| 176 | }
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[1244] | 177 | $options =~ s/\$/\\\$/g;
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[7904] | 178 |
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[10218] | 179 | eval ("\$plugobj = new \$pluginname([],[$options])");
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[4] | 180 | die "$@" if $@;
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[809] | 181 |
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[1243] | 182 | # initialize plugin
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[2785] | 183 | $plugobj->init($verbosity, $outhandle, $failhandle);
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[10478] | 184 |
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[12968] | 185 | $plugobj->set_incremental($incremental);
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[1243] | 186 |
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[4] | 187 | # add this object to the list
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| 188 | push (@plugin_objects, $plugobj);
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| 189 | }
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| 190 |
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| 191 | return \@plugin_objects;
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| 192 | }
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| 193 |
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[835] | 194 |
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| 195 | sub begin {
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[11333] | 196 | my ($pluginfo, $base_dir, $processor, $maxdocs, $gli) = @_;
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[835] | 197 |
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[11333] | 198 | map { $_->{'gli'} = $gli; } @$pluginfo;
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[835] | 199 | map { $_->begin($pluginfo, $base_dir, $processor, $maxdocs); } @$pluginfo;
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| 200 | }
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| 201 |
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[16381] | 202 | sub file_block_read {
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| 203 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $gli) = @_;
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[10155] | 204 |
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[16381] | 205 |
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| 206 | $gli = 0 unless defined $gli;
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| 207 |
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| 208 | my $rv = 0;
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| 209 | my $glifile = $file;
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| 210 |
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| 211 | $glifile =~ s/^[\/\\]+//; # file sometimes starts with a / so get rid of it
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| 212 |
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| 213 | # Announce to GLI that we are handling a file
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| 214 | print STDERR "<File n='$glifile'>\n" if $gli;
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| 215 |
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| 216 | # the .kill file is a handy (if not very elegant) way of aborting
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| 217 | # an import.pl or buildcol.pl process
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| 218 | if (-e &util::filename_cat ($ENV{'GSDLCOLLECTDIR'}, ".kill")) {
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| 219 | gsprintf($outhandle, "{plugin.kill_file}\n");
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| 220 | die "\n";
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| 221 | }
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| 222 |
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| 223 | foreach my $plugobj (@$pluginfo) {
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| 224 |
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| 225 | $rv = $plugobj->file_block_read($pluginfo, $base_dir, $file, $block_hash, $metadata, $gli);
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| 226 | #last if (defined $rv && $rv==1); # stop this file once we have found something to 'process' it
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| 227 | }
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| 228 |
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| 229 | }
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| 230 |
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| 231 |
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[8515] | 232 | sub metadata_read {
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[17300] | 233 | my ($pluginfo, $base_dir, $file, $block_hash, $extrametakeys, $extrametadata, $processor, $maxdocs, $gli, $aux) = @_;
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[8515] | 234 |
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| 235 | $maxdocs = -1 unless defined $maxdocs && $maxdocs =~ /\d/;
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| 236 | $gli = 0 unless defined $gli;
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| 237 |
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| 238 | my $rv = 0;
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| 239 | my $glifile = $file;
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| 240 |
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| 241 | $glifile =~ s/^[\/\\]+//; # file sometimes starts with a / so get rid of it
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| 242 |
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| 243 | # Announce to GLI that we are handling a file
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| 244 | print STDERR "<File n='$glifile'>\n" if $gli;
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| 245 |
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| 246 | # the .kill file is a handy (if not very elegant) way of aborting
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| 247 | # an import.pl or buildcol.pl process
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| 248 | if (-e &util::filename_cat ($ENV{'GSDLCOLLECTDIR'}, ".kill")) {
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| 249 | gsprintf($outhandle, "{plugin.kill_file}\n");
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| 250 | die "\n";
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| 251 | }
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| 252 |
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| 253 | my $had_error = 0;
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| 254 | # pass this file by each of the plugins in turn until one
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| 255 | # is found which will process it
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| 256 | # read must return:
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| 257 | # undef - could not recognise
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| 258 | # -1 - tried but error
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| 259 | # 0 - blocked
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| 260 | # anything else for successful processing
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| 261 |
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| 262 | foreach my $plugobj (@$pluginfo) {
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| 263 |
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[16381] | 264 | $rv = $plugobj->metadata_read($pluginfo, $base_dir, $file, $block_hash,
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[17300] | 265 | $extrametakeys, $extrametadata, $processor, $maxdocs, $gli, $aux);
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[8515] | 266 |
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| 267 | if (defined $rv) {
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| 268 | if ($rv == -1) {
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| 269 | # an error has occurred
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| 270 | $had_error = 1;
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| 271 | print STDERR "<ProcessingError n='$glifile'>\n" if $gli;
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| 272 | } else {
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| 273 | return $rv;
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| 274 | }
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| 275 | } # else undefined - was not recognised by the plugin
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| 276 | }
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| 277 |
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| 278 | return 0;
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| 279 | }
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| 280 |
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[4] | 281 | sub read {
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[16381] | 282 | my ($pluginfo, $base_dir, $file, $block_hash, $metadata, $processor, $maxdocs, $total_count, $gli, $aux) = @_;
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[4] | 283 |
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[809] | 284 | $maxdocs = -1 unless defined $maxdocs && $maxdocs =~ /\d/;
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[9853] | 285 | $total_count = 0 unless defined $total_count && $total_count =~ /\d/;
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[6332] | 286 | $gli = 0 unless defined $gli;
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| 287 |
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[315] | 288 | my $rv = 0;
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[7363] | 289 | my $glifile = $file;
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[7904] | 290 |
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[7363] | 291 | $glifile =~ s/^[\/\\]+//; # file sometimes starts with a / so get rid of it
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[8515] | 292 |
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[6332] | 293 | # Announce to GLI that we are handling a file
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[7363] | 294 | print STDERR "<File n='$glifile'>\n" if $gli;
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[8515] | 295 |
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[1454] | 296 | # the .kill file is a handy (if not very elegant) way of aborting
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| 297 | # an import.pl or buildcol.pl process
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| 298 | if (-e &util::filename_cat ($ENV{'GSDLCOLLECTDIR'}, ".kill")) {
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[7829] | 299 | gsprintf($outhandle, "{plugin.kill_file}\n");
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[1454] | 300 | die "\n";
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| 301 | }
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[16381] | 302 |
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[7363] | 303 | my $had_error = 0;
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[4] | 304 | # pass this file by each of the plugins in turn until one
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| 305 | # is found which will process it
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[7363] | 306 | # read must return:
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| 307 | # undef - could not recognise
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| 308 | # -1 - tried but error
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| 309 | # 0 - blocked
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| 310 | # anything else for successful processing
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[8515] | 311 |
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[7829] | 312 | foreach my $plugobj (@$pluginfo) {
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[8515] | 313 |
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| 314 | $rv = $plugobj->read($pluginfo, $base_dir, $file,
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[16381] | 315 | $block_hash, $metadata, $processor, $maxdocs,
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| 316 | $total_count, $gli, $aux);
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[8515] | 317 |
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| 318 | if (defined $rv) {
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[7363] | 319 | if ($rv == -1) {
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[7904] | 320 | # an error has occurred
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[7363] | 321 | $had_error = 1;
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| 322 | } else {
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[7904] | 323 | return $rv;
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[7363] | 324 | }
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| 325 | } # else undefined - was not recognised by the plugin
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[4] | 326 | }
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[7904] | 327 |
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[7363] | 328 | if ($had_error) {
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| 329 | # was recognised but couldn't be processed
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| 330 | if ($verbosity >= 2) {
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[7829] | 331 | gsprintf($outhandle, "{plugin.no_plugin_could_process}\n", $file);
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[7363] | 332 | }
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| 333 | # tell the GLI that it was not processed
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| 334 | print STDERR "<NonProcessedFile n='$glifile'>\n" if $gli;
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[7904] | 335 |
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[7829] | 336 | gsprintf($failhandle, "$file: {plugin.no_plugin_could_process_this_file}\n");
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[7363] | 337 | $stats->{'num_not_processed'} ++;
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| 338 | } else {
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| 339 | # was not recognised
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| 340 | if ($verbosity >= 2) {
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[7829] | 341 | gsprintf($outhandle, "{plugin.no_plugin_could_recognise}\n",$file);
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[7363] | 342 | }
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| 343 | # tell the GLI that it was not processed
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| 344 | print STDERR "<NonRecognisedFile n='$glifile'>\n" if $gli;
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| 345 |
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[7829] | 346 | gsprintf($failhandle, "$file: {plugin.no_plugin_could_recognise_this_file}\n");
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[7363] | 347 | $stats->{'num_not_recognised'} ++;
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[170] | 348 | }
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[315] | 349 | return 0;
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[4] | 350 | }
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| 351 |
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[2785] | 352 | # write out some general stats that the plugins have compiled - note that
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| 353 | # the buildcol.pl process doesn't currently call this process so the stats
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| 354 | # are only output after import.pl -
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| 355 | sub write_stats {
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[6332] | 356 | my ($pluginfo, $statshandle, $faillog, $gli) = @_;
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[2785] | 357 |
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[6332] | 358 | $gli = 0 unless defined $gli;
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| 359 |
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[7829] | 360 | foreach my $plugobj (@$pluginfo) {
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[2785] | 361 | $plugobj->compile_stats($stats);
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| 362 | }
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| 363 |
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| 364 | my $total = $stats->{'num_processed'} + $stats->{'num_blocked'} +
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[7363] | 365 | $stats->{'num_not_processed'} + $stats->{'num_not_recognised'};
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[2785] | 366 |
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[7363] | 367 | print STDERR "<ImportComplete considered='$total' processed='$stats->{'num_processed'}' blocked='$stats->{'num_blocked'}' ignored='$stats->{'num_not_recognised'}' failed='$stats->{'num_not_processed'}'>\n" if $gli;
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[6332] | 368 |
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[2785] | 369 | if ($total == 1) {
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[7829] | 370 | gsprintf($statshandle, "* {plugin.one_considered}\n");
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[2785] | 371 | } else {
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[7829] | 372 | gsprintf($statshandle, "* {plugin.n_considered}\n", $total);
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[2785] | 373 | }
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| 374 | if ($stats->{'num_archives'}) {
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[5682] | 375 | if ($stats->{'num_archives'} == 1) {
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[7829] | 376 | gsprintf($statshandle, " ({plugin.including_archive})\n");
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[5682] | 377 | }
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| 378 | else {
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[7829] | 379 | gsprintf($statshandle, " ({plugin.including_archives})\n",
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| 380 | $stats->{'num_archives'});
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[5682] | 381 | }
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[2785] | 382 | }
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| 383 | if ($stats->{'num_processed'} == 1) {
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[7829] | 384 | gsprintf($statshandle, "* {plugin.one_included}\n");
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[2785] | 385 | } else {
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[7829] | 386 | gsprintf($statshandle, "* {plugin.n_included}\n", $stats->{'num_processed'});
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[2785] | 387 | }
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[7363] | 388 | if ($stats->{'num_not_recognised'}) {
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| 389 | if ($stats->{'num_not_recognised'} == 1) {
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[7829] | 390 | gsprintf($statshandle, "* {plugin.one_unrecognised}\n");
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[7363] | 391 | } else {
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[7829] | 392 | gsprintf($statshandle, "* {plugin.n_unrecognised}\n",
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| 393 | $stats->{'num_not_recognised'});
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[7363] | 394 | }
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| 395 |
|
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| 396 | }
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[2797] | 397 | if ($stats->{'num_not_processed'}) {
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| 398 | if ($stats->{'num_not_processed'} == 1) {
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[7829] | 399 | gsprintf($statshandle, "* {plugin.one_rejected}\n");
|
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[2797] | 400 | } else {
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[7829] | 401 | gsprintf($statshandle, "* {plugin.n_rejected}\n",
|
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| 402 | $stats->{'num_not_processed'});
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[5682] | 403 | }
|
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[7363] | 404 | }
|
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| 405 | if ($stats->{'num_not_processed'} || $stats->{'num_not_recognised'}) {
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[7829] | 406 | gsprintf($statshandle, " {plugin.see_faillog}\n", $faillog);
|
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[2797] | 407 | }
|
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[2785] | 408 | }
|
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| 409 |
|
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[835] | 410 | sub end {
|
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[1587] | 411 | my ($pluginfo, $processor) = @_;
|
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| 412 | map { $_->end($processor); } @$pluginfo;
|
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[835] | 413 | }
|
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[4] | 414 |
|
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[10155] | 415 | sub deinit {
|
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| 416 | my ($pluginfo, $processor) = @_;
|
---|
| 417 |
|
---|
| 418 |
|
---|
| 419 | map { $_->deinit($processor); } @$pluginfo;
|
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| 420 | }
|
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| 421 |
|
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[4] | 422 | 1;
|
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