/[webpac2]/Webpacus/lib/Webpacus/Model/WebPAC.pm
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Contents of /Webpacus/lib/Webpacus/Model/WebPAC.pm

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Revision 425 - (show annotations)
Sun Mar 26 18:18:01 2006 UTC (18 years, 1 month ago) by dpavlin
File size: 19118 byte(s)
 r512@llin:  dpavlin | 2006-03-26 20:24:51 +0200
 fix to return correct site after list_nodes

1 package Webpacus::Model::WebPAC;
2
3 use strict;
4 use warnings;
5 use lib '/data/webpac2/lib';
6 use base qw/
7 Catalyst::Model
8 /;
9 use WebPAC::Store 0.08;
10 use Search::Estraier 0.04;
11 use File::Slurp;
12 use Time::HiRes qw/time/;
13 use Encode qw/encode decode from_to/;
14 use Template;
15
16 =head1 NAME
17
18 Webpacus::Model::WebPAC - Catalyst Model
19
20 =head1 SYNOPSIS
21
22 See L<Webpacus> and L<WebPAC>.
23
24 =head1 DESCRIPTION
25
26 Catalyst Model for access to WebPAC data.
27
28 =head2 new
29
30 Configuration for hyperestraier in C<config.yaml> like this:
31
32 --- #YAML:1.0
33 # DO NOT USE TABS FOR INDENTATION OR label/value SEPARATION!!!
34
35 # configuration for hyper estraier full text search engine
36 hyperestraier:
37 masterurl: 'http://localhost:1978/node/webpac2'
38 defaultnode: 'webpac2'
39 defaultdepth: 1
40 user: 'admin'
41 passwd: 'admin'
42 hits_on_page: 100
43 hits_for_pager: 1000
44
45 webpac:
46 db_path: '/data/webpac2/db'
47 template_path: '/data/webpac2/conf/output/tt'
48 template: 'html_ffzg_results_short.tt'
49 # encoding comming from webpac
50 webpac_encoding: 'iso-8859-2'
51
52 =cut
53
54 sub new {
55 my ( $self, $c, $config ) = @_;
56
57 $self = $self->NEXT::new($c, $config);
58 $self->config($config);
59
60 my $log = $c->log;
61 $self->{log} = $log;
62
63 my $est_cfg = $c->config->{hyperestraier};
64 $est_cfg->{'log'} = $log;
65
66 $est_cfg->{encoding} = $est_cfg->{catalyst_encoding} || $c->config->{catalyst_encoding} or $c->log->fatal("can't find catalyst_encoding");
67
68 $log->dumper($est_cfg, 'est_cfg');
69
70 if (! $est_cfg->{database}) {
71 my $defaultnode = $est_cfg->{defaultnode} || $log->logdie("can't find defaultnode in estraier configuration");
72 $log->info("using default node $defaultnode");
73 $est_cfg->{database} = $defaultnode;
74 }
75
76 my $url = $est_cfg->{masterurl} . '/node/' . $est_cfg->{database};
77
78 $log->info("opening Hyper Estraier index $url as $est_cfg->{'user'}");
79
80 $self->{est_node} = Search::Estraier::Node->new(
81 url => $url,
82 user => $est_cfg->{user},
83 passwd => $est_cfg->{passwd},
84 );
85
86 $log->fatal("can't create Search::Estraier::Node $url") unless ($self->{est_node});
87
88 # save config parametars in object
89 foreach my $f (qw/
90 db_path template_path hits_on_page webpac_encoding defaultdepth
91 masterurl defaultnode
92 /) {
93 $self->{$f} = $c->config->{hyperestraier}->{$f} ||
94 $c->config->{webpac}->{$f};
95 $log->debug("self->{$f} = " . $self->{$f});
96 }
97 my $db_path = $self->{db_path};
98 my $template_path = $self->{template_path};
99
100 $log->debug("using db path '$db_path', template path '$template_path'");
101
102 $self->{db} = new WebPAC::Store(
103 path => $db_path,
104 read_only => 1,
105 database => $est_cfg->{database},
106 );
107
108 # default template from config.yaml
109 $self->{template} ||= $c->config->{webpac}->{template};
110
111 $log->debug("converting encoding from webpac_encoding '" .
112 $c->config->{webpac}->{webpac_encoding} .
113 "'"
114 );
115
116 $self->{databases} = $c->config->{databases} || $log->fatal("can't find databases in config");
117
118 # create Template toolkit instance
119 $self->{'tt'} = Template->new(
120 INCLUDE_PATH => $template_path,
121 FILTERS => {
122 dump_html => sub {
123 return unless (@_);
124 my $out;
125 my $i = 1;
126 foreach my $v (@_) {
127 $out .= qq{<div id="dump_$i">} .
128 Data::HTMLDumper->Dump([ $v ],[ "v$i" ]) .
129 qq{</div>};
130 $i++;
131 }
132 $out =~ s!<table[^>/]*>!<table class="dump">!gis if ($out);
133 return $out;
134 }
135 },
136 EVAL_PERL => 1,
137 );
138
139 return $self;
140
141 }
142
143 =head2 setup_site
144
145 $self->setup_site('site_name');
146
147 Change node URL and database name according to site name (if available) or fallback
148 to C<defaultnode> from configuration.
149
150 =cut
151
152 sub setup_site {
153 my $self = shift;
154
155 my $site = shift || $self->{defaultnode};
156 if (! $site) {
157 $self->{log}->warn("not changing site from " . $self->{est_node}->{url});
158 return;
159 }
160
161 $self->{log}->fatal("setup_site can't find site or defaultnode") unless ($site);
162
163 my $url = $self->{masterurl} . '/node/' . $site;
164 $self->{est_node}->set_url( $url );
165 $self->{log}->debug("setup_site '$site' using $url");
166 }
167
168 =head2 search
169
170 my $m->search(
171 phrase => 'query phrase',
172 add_attr => \@add_attr
173 get_attr => [ '@uri' ],
174 max => 42,
175 template => 'result_template.tt',
176 depth => 1,
177 );
178
179 All fields are standard C<WebPAC::Search::Estraier> parametars except
180 C<template> which will (if specified) return results in HTML using
181 selected template.
182
183 =cut
184
185 sub search {
186 my $self = shift;
187
188 my $search_start_t = time();
189
190 my $args = {@_};
191
192 my $log = $self->{log};
193
194 $log->dumper($args, 'args');
195
196 my $query = $args->{phrase} || $log->warn("no query phrase") && return;
197
198 my $template_filename = $args->{template} || $self->{template};
199
200 $args->{max} ||= $self->{'hits_for_pager'};
201 if (! $args->{max}) {
202 $args->{max} = 100;
203 $log->warn("max not set when calling model. Using default of $args->{max}");
204 }
205
206 my $times; # store some times for benchmarking
207
208 my $t = time();
209
210 # transfer depth of search
211 if (! $args->{depth}) {
212 my $default = $self->{defaultdepth} || $log->logdie("can't find defaultdepth in estraier configuration");
213 $args->{depth} = $default;
214 $log->warn("using default search depth $default");
215 }
216 $args->{depth} ||= 0;
217
218 $log->debug("searching " . $self->{est_node}->{url} . " max: $args->{max} depth: $args->{depth} phrase: " . ($query || '[none]') );
219
220 #
221 # construct condition for Hyper Estraier
222 #
223 my $cond = Search::Estraier::Condition->new();
224 if ( ref($args->{add_attr}) eq 'ARRAY' ) {
225 $log->debug("adding search attributes: " . join(", ", @{ $args->{add_attr} }) );
226 map {
227 $cond->add_attr( $_ );
228 $log->debug(" + $_");
229 } @{ $args->{add_attr} };
230 };
231
232 $cond->set_phrase( $query ) if ($query);
233 $cond->set_options( $args->{options} ) if ($args->{options});
234 $cond->set_order( $args->{order} ) if ($args->{order});
235
236 my $max = $args->{max} || 7;
237 my $page = $args->{page} || 1;
238 if ($page < 1) {
239 $log->warn("page number $page < 1");
240 $page = 1;
241 }
242
243 $cond->set_max( $page * $max );
244
245 my $result = $self->{est_node}->search($cond, $args->{depth});
246 if (! $result) {
247 $self->{log}->fatal("search didn't return result");
248 return;
249 }
250 my $hits = $result->doc_num;
251
252 $times->{est} += time() - $t;
253
254 $log->debug( sprintf("search took %.6fs and returned $hits hits.", $times->{est}) );
255
256 $self->{hints} = $result->{hints};
257 #$log->dumper($self->{hints}, 'original hints' );
258
259 #
260 # fetch results
261 #
262
263 my @results;
264
265 for my $i ( (($page - 1) * $max) .. ( $hits - 1 ) ) {
266
267 $t = time();
268
269 #$log->debug("get_doc($i)");
270 my $doc = $result->get_doc( $i );
271 if (! $doc) {
272 $log->warn("can't find result $i");
273 next;
274 }
275
276 my $hash;
277
278 foreach my $attr (@{ $args->{get_attr} }) {
279 my $val = $doc->attr( $attr );
280 #$log->debug("attr $attr = ", $val || 'undef');
281 $hash->{$attr} = $val if (defined($val));
282 }
283
284 $times->{hash} += time() - $t;
285
286 next unless ($hash);
287
288 if (! $args->{'template'}) {
289 push @results, $hash;
290 } else {
291 my ($database, $prefix, $id);
292
293 if ( $hash->{'@uri'} =~ m!/([^/]+)/([^/]+)/(\d+)$!) {
294 ($database, $prefix,$id) = ($1,$2,$3);
295 } else {
296 $log->warn("can't decode database/prefix/id from " . $hash->{'@uri'});
297 next;
298 }
299
300 #$log->debug("load_ds( id => $id, prefix => '$prefix' )");
301
302 $t = time();
303
304 my $ds = $self->{db}->load_ds( database => $database, prefix => $prefix, id => $id );
305 if (! $ds) {
306 $log->error("can't load_ds( ${database}/${prefix}/${id} )");
307 next;
308 }
309
310 $times->{db} += time() - $t;
311
312 $t = time();
313
314 my $html = $self->apply(
315 template => $template_filename,
316 data => $ds,
317 record_uri => "${database}/${prefix}/${id}",
318 config => $self->{databases}->{$database},
319 );
320
321 $times->{apply} += time() - $t;
322
323 $t = time();
324
325 $html = decode($self->{webpac_encoding}, $html);
326
327 $times->{decode} += time() - $t;
328
329 push @results, $html;
330 }
331
332 }
333
334 $log->debug( sprintf(
335 "duration breakdown: estraier %.6fs, hash %.6fs, store %.6fs, apply %.6fs, decode %.06f, total: %.6fs",
336 $times->{est}, $times->{hash}, $times->{db}, $times->{apply}, $times->{decode}, time() - $search_start_t,
337 ) );
338
339 return \@results;
340 }
341
342 =head2 hints
343
344 my $hints = $m->hints;
345
346 Return various useful hints about result
347
348 =cut
349
350 sub hints {
351 my $self = shift;
352
353 unless ($self->{hints}) {
354 $self->{log}->fatal("no hints found!");
355 return;
356 }
357
358 my $hints;
359
360 while (my ($key,$val) = each %{ $self->{hints} }) {
361
362 #$self->{log}->debug("current hint $key = $val");
363
364 if ($key =~ m/^(?:HITS*|TIME|DOCNUM|WORDNUM)$/) {
365 $hints->{ lc($key) } = $val;
366 } elsif ($key =~ m/^HINT#/) {
367 my ($word,$count) = split(/\t/,$val,2);
368 $hints->{words}->{$word} = $count;
369 } elsif ($key =~ m/^LINK#/) {
370 my ($url,undef,undef,undef,undef,undef,$results) = split(/\t/,$val,7);
371 if ($url =~ m#/node/(.+)$#) {
372 $hints->{node}->{$1} = $results;
373 } else {
374 $self->{log}->debug("url $url doesn't have /node/ in it!");
375 }
376 } else {
377 $self->{log}->debug("unknown hint $key = $val");
378 }
379
380 }
381
382 $self->{log}->dumper($hints, 'model hints' );
383
384 return $hints;
385 }
386
387
388 =head2 record
389
390 my $html = $m->record(
391 mfn => 42,
392 template => 'foo.tt',
393 );
394
395 This will load one record, convert it to html using C<template> and return
396 it.
397
398 =cut
399
400 sub record {
401 my $self = shift;
402
403 my $args = {@_};
404 my $log = $self->{log};
405 $log->dumper( $args, 'args' );
406
407 foreach my $f (qw/record_uri template/) {
408 $log->fatal("need $f") unless ($args->{$f});
409 }
410
411 my ($database, $prefix, $id);
412
413 if ($args->{record_uri} =~ m#^([^/]+)/([^/]+)/([^/]+)$#) {
414 ($database, $prefix, $id) = ($1,$2,$3);
415 } else {
416 $log->error("can't parse $args->{record_uri} into prefix, database and uri");
417 return;
418 }
419
420 my $ds = $self->{db}->load_ds( id => $id, prefix => $prefix, database => $database );
421 if (! $ds) {
422 $log->error("can't load_ds( $database/$prefix/$id )");
423 return;
424 }
425
426 my $html = $self->apply(
427 template => $args->{template},
428 data => $ds,
429 record_uri => $args->{record_uri},
430 config => $self->{databases}->{$database},
431 );
432
433 $html = decode($self->{webpac_encoding}, $html);
434
435 return $html;
436 }
437
438
439 =head2 list_nodes
440
441 my @nodes = $m->list_nodes( 'site' );
442
443 Return all databases which have records for selected site. Returned array of
444 hashes has elements C<name> and C<label>.
445
446 =cut
447
448 my $nodes_list;
449
450 sub list_nodes {
451 my $self = shift;
452
453 my $site = shift || $self->{defaultnode};
454
455 # cache?
456 if ($nodes_list->{$site} && ref($nodes_list->{$site} eq 'ARRAY')) {
457 $self->{log}->debug("list_nodes for site $site and returns from cache");
458 return @{ $nodes_list->{$site} };
459 };
460
461 $self->{log}->debug("list_nodes for site $site");
462
463 $self->setup_site( $site );
464
465 my @nodes;
466
467 if ($self->{est_node}->doc_num > 0) {
468 push @nodes, {
469 name => $self->{est_node}->name,
470 label => $self->{est_node}->label,
471 doc_num => $self->{est_node}->doc_num,
472 }
473 }
474
475 # refresh set info
476 $self->{est_node}->_set_info;
477
478 my $links = $self->{est_node}->links || return @nodes;
479
480 $self->{log}->dumper( $links, 'links' );
481
482 foreach my $link (@{ $links }) {
483 my ($url, $label, $credit) = split(/\t/, $link, 3);
484 if ($url =~ m#/node/(.+)$#) {
485 my $node = $1;
486 $self->setup_site( $node );
487 $self->{est_node}->_set_info;
488 $label = decode('UTF-8', $label);
489 push @nodes, {
490 name => $node,
491 label => $label,
492 doc_num => $self->{est_node}->doc_num,
493 }
494 } else {
495 $self->{log}->warn("can't find node name in link $link");
496 }
497 }
498
499 $self->setup_site( $site );
500 $self->{est_node}->_set_info;
501
502 $self->{log}->dumper( \@nodes, 'nodes' );
503
504 $nodes_list->{$site} = \@nodes;
505
506 return @nodes;
507 }
508
509 =head2 save_html
510
511 $m->save_html( '/full/path/to/file', $content );
512
513 It will use C<Encode> to convert content encoding back to
514 Webpac codepage, recode JavaScript Unicode entities (%u1234),
515 strip extra newlines at beginning and end, and save to
516 C</full/path/to/file.new> and if that succeeds, just rename
517 it over original file which should be atomic on filesystem level.
518
519 =cut
520
521 sub save_html {
522 my ($self, $path, $content) = @_;
523
524 # FIXME Should this be UTF-8 or someting?
525 my $js_encoding = $self->{webpac_encoding};
526 $js_encoding = 'UTF-16';
527
528 sub _conv_js {
529 return '0x' . $_[1];
530 return encode($_[0], chr(hex($_[1])));
531 }
532 #$content =~ s/%u([a-fA-F0-9]{4})/_conv_js($js_encoding,$1)/gex;
533 $content =~ s/^[\n\r]+//s;
534 $content =~ s/[\n\r]+$/\n/s;
535 $content =~ s/\n\r/\n/gs;
536
537 my $disk_encoding = $self->{webpac_encoding} || 'utf-8';
538 $self->{log}->debug("convert encoding to $disk_encoding");
539 from_to($content, 'utf-8', $disk_encoding) || $self->{log}->warn("encoding from utf-8 to $disk_encoding failed for: $content");
540
541 write_file($path . '.new', {binmode => ':raw' }, $content) || die "can't save ${path}.new $!";
542 rename $path . '.new', $path || die "can't rename to $path: $!";
543 }
544
545 =head2 load_html
546
547 my $html = $m->load_html('/full/path/to/file');
548
549 This will convert file from Webpac encoding to Catalyst and
550 convert that data to escaped HTML (for sending into
551 C<< <textarea/> >> tags in html.
552
553 =cut
554
555 sub load_html {
556 my ($self, $path) = @_;
557
558 die "no path?" unless ($path);
559
560 my $content = read_file($path, {binmode => ':raw' }) || die "can't read $path: $!";
561
562 return decode($self->{webpac_encoding}, $content);
563 }
564
565
566 =head2 apply
567
568 Create output from in-memory data structure using Template Toolkit template.
569
570 my $text = $tt->apply(
571 template => 'text.tt',
572 data => $ds,
573 record_uri => 'database/prefix/mfn',
574 );
575
576 It also has follwing template toolikit filter routies defined:
577
578 =cut
579
580 # Escape <, >, & and ", and to produce valid XML
581 my %escape = ('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;');
582 my $escape_re = join '|' => keys %escape;
583
584 sub apply {
585 my $self = shift;
586
587 my $args = {@_};
588
589 my $log = $self->{log} || die "no log?";
590
591 foreach my $a (qw/template data/) {
592 $log->fatal("need $a") unless ($args->{$a});
593 }
594
595 =head3 tt_filter_type
596
597 filter to return values of specified from $ds, usage from TT template is in form
598 C<d('FieldName','delimiter')>, where C<delimiter> is optional, like this:
599
600 [% d('Title') %]
601 [% d('Author',', ' %]
602
603 =cut
604
605 sub tt_filter_type {
606 my ($data,$type) = @_;
607
608 die "no data?" unless ($data);
609 $type ||= 'display';
610
611 my $default_delimiter = {
612 'display' => '&#182;<br/>',
613 'index' => '\n',
614 };
615
616 return sub {
617
618 my ($name,$join) = @_;
619
620 die "no data hash" unless ($data->{'data'} && ref($data->{'data'}) eq 'HASH');
621 # Hm? Should we die here?
622 return unless ($name);
623
624 my $item = $data->{'data'}->{$name} || return;
625
626 my $v = $item->{$type} || return;
627
628 if (ref($v) eq 'ARRAY') {
629 if ($#{$v} == 0) {
630 $v = $v->[0];
631 $v =~ s/($escape_re)/$escape{$1}/g;
632 } else {
633 $join = $default_delimiter->{$type} unless defined($join);
634 $v = join($join, map {
635 s/($escape_re)/$escape{$1}/g;
636 } @{$v});
637 }
638 } else {
639 warn("TT filter $type(): field $name values aren't ARRAY, ignoring");
640 }
641
642 return $v;
643 }
644 }
645
646 $args->{'d'} = tt_filter_type($args, 'display');
647 $args->{'display'} = tt_filter_type($args, 'display');
648
649 =head3 tt_filter_search
650
651 filter to return links to search, usage in TT:
652
653 [% search('FieldToDisplay','FieldToSearch','optional delimiter', 'optional_template.tt') %]
654
655 =cut
656
657 sub tt_filter_search {
658
659 my ($data) = @_;
660
661 die "no data?" unless ($data);
662
663 return sub {
664
665 my ($display,$search,$delimiter,$template) = @_;
666
667 # default delimiter
668 $delimiter ||= '&#182;<br/>',
669
670 die "no data hash" unless ($data->{'data'} && ref($data->{'data'}) eq 'HASH');
671 # Hm? Should we die here?
672 return unless ($display);
673
674 my $item = $data->{'data'}->{$display} || return;
675
676 return unless($item->{'display'});
677 if (! $item->{'search'}) {
678 warn "error in TT template: field $display didn't insert anything into search, use d('$display') and not search('$display'...)";
679 return;
680 }
681
682 my @warn;
683 foreach my $type (qw/display search/) {
684 push @warn, "field $display type $type values aren't ARRAY" unless (ref($item->{$type}) eq 'ARRAY');
685 }
686
687 if (@warn) {
688 warn("TT filter search(): " . join(",", @warn) . ", skipping");
689 return;
690 }
691 my @html;
692
693 my $d_el = $#{ $item->{'display'} };
694 my $s_el = $#{ $item->{'search'} };
695
696 # easy, both fields have same number of elements or there is just
697 # one search and multiple display
698 if ( $d_el == $s_el || $s_el == 0 ) {
699
700 foreach my $i ( 0 .. $d_el ) {
701
702 my $s;
703 if ($s_el > 0) {
704 $s = $item->{'search'}->[$i] or warn "can't find value $i for type search in field $search";
705 } else {
706 $s = $item->{'search'}->[0];
707 }
708 #$s =~ s/([^\w.-])/sprintf("%%%02X",ord($1))/eg;
709 $s = __quotemeta( $s );
710
711 my $d = $item->{'display'}->[$i] or warn "can't find value $i for type display in field $display";
712
713 my $template_arg = '';
714 $template_arg = qq{,'$template'} if ($template);
715
716 push @html, qq{<a href="#" onclick="return search_via_link('$search','$s'${template_arg})">$d</a>};
717 }
718
719 return join($delimiter, @html);
720 } else {
721 my $html = qq{<div class="notice">WARNING: we should really support if there is $d_el display elements and $s_el search elements, but currently there is no nice way to do so, so we will just display values</div>};
722 my $v = $item->{'display'};
723
724 if ($#{$v} == 0) {
725 $html .= $v->[0];
726 } else {
727 $html .= join($delimiter, @{$v});
728 }
729 return $html;
730 }
731 }
732 }
733
734 $args->{'search'} = tt_filter_search($args);
735
736 =head3 load_rec
737
738 Used mostly for onClick events like this:
739
740 <a href="#" onClick="[% load_rec( record_uri, 'template_name.tt') %]>foo</a>
741
742 It will automatically do sanity checking and create correct JavaScript code.
743
744 =cut
745
746 $args->{'load_rec'} = sub {
747 my @errors;
748
749 my $record_uri = shift or push @errors, "record_uri missing";
750 my $template = shift or push @errors, "template missing";
751
752 if ($record_uri !~ m#^[^/]+/[^/]+/[^/]+$#) {
753 push @errors, "invalid format of record_uri: $record_uri";
754 }
755
756 if (@errors) {
757 return "Logger.error('errors in load_rec: " . join(", ", @errors) . "'); return false;";
758 } else {
759 return "load_rec('$record_uri','$template'); return false;";
760 }
761 };
762
763 =head3 load_template
764
765 Used to re-submit search request and load results in different template
766
767 <a href="#" onClick="[% load_template( 'template_name.tt' ) %]">bar</a>
768
769 =cut
770
771 $args->{'load_template'} = sub {
772 my $template = shift or return "Logger.error('load_template missing template name!'); return false;";
773 return "load_template($template); return false;";
774 };
775
776 my $out;
777
778 $self->{'tt'}->process(
779 $args->{'template'},
780 $args,
781 \$out
782 ) || $log->error( "apply can't process template: ", $self->{'tt'}->error() );
783
784 return $out;
785 }
786
787
788 =head2 __quotemeta
789
790 Helper to quote JavaScript-friendly characters
791
792 =cut
793
794 sub __quotemeta {
795 local $_ = shift;
796 $_ = decode('iso-8859-2', $_);
797
798 s<([\x{0080}-\x{fffd}]+)>{sprintf '\u%0*v4X', '\u', $1}ge if ( Encode::is_utf8($_) );
799 {
800 use bytes;
801 s<((?:[^ \x21-\x7E]|(?:\\(?!u)))+)>{sprintf '\x%0*v2X', '\x', $1}ge;
802 }
803
804 s/\\x09/\\t/g;
805 s/\\x0A/\\n/g;
806 s/\\x0D/\\r/g;
807 s/"/\\"/g;
808 s/\\x5C/\\\\/g;
809
810 return $_;
811 }
812
813
814
815 =head1 AUTHOR
816
817 Dobrica Pavlinusic C<< <dpavlin@rot13.org> >>
818
819 =head1 LICENSE
820
821 This library is free software, you can redistribute it and/or modify
822 it under the same terms as Perl itself.
823
824 =cut
825
826 1;

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