root/gsdl/trunk/perllib/basebuildproc.pm @ 18463

Revision 18463, 20.4 KB (checked in by davidb, 11 years ago)

Warning about file copying in event that a hard link operation is not supported altered to only appear if verbosity > 2

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1###########################################################################
2#
3# basebuildproc.pm --
4# A component of the Greenstone digital library software
5# from the New Zealand Digital Library Project at the
6# University of Waikato, New Zealand.
7#
8# Copyright (C) 1999 New Zealand Digital Library Project
9#
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
14#
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18# GNU General Public License for more details.
19#
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23#
24###########################################################################
25
26# This document processor outputs a document for indexing (should be
27# implemented by subclass) and storing in the database
28
29package basebuildproc;
30
31eval {require bytes};
32
33use classify;
34use dbutil;
35use doc;
36use docproc;
37use strict;
38no strict 'subs';
39no strict 'refs';
40use util;
41
42BEGIN {
43    @basebuildproc::ISA = ('docproc');
44}
45
46sub new()
47  {
48    my ($class, $collection, $source_dir, $build_dir, $keepold, $verbosity, $outhandle) = @_;
49    my $self = new docproc ();
50
51    # outhandle is where all the debugging info goes
52    # output_handle is where the output of the plugins is piped
53    # to (i.e. mg, database etc.)
54    $outhandle = STDERR unless defined $outhandle;
55
56    $self->{'collection'} = $collection;
57    $self->{'source_dir'} = $source_dir;
58    $self->{'build_dir'}  = $build_dir;
59    $self->{'keepold'}    = $keepold;
60    $self->{'verbosity'}  = $verbosity;
61    $self->{'outhandle'}  = $outhandle;
62
63    $self->{'classifiers'} = [];
64    $self->{'mode'} = "text";
65    $self->{'assocdir'} = $build_dir;
66    $self->{'dontdb'} = {};
67    $self->{'store_metadata_coverage'} = "false";
68
69    $self->{'index'} = "section:text";
70    $self->{'indexexparr'} = [];
71
72    $self->{'separate_cjk'} = 0;
73
74    my $found_num_data = 0;
75    my $buildconfigfile = undef;
76
77    if ($keepold) {
78    # For incremental building need to seed num_docs etc from values
79    # stored in build.cfg (if present)
80    $buildconfigfile = &util::filename_cat($build_dir, "build.cfg");
81    if (-e $buildconfigfile) {
82        $found_num_data = 1;
83    }
84    else {
85        # try the index dir
86        $buildconfigfile = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},
87                           "index", "build.cfg");
88        if (-e $buildconfigfile) {
89        $found_num_data = 1;
90        }
91    }
92
93    }
94
95    if ($found_num_data)
96      {
97        #print STDERR "Found_Num_Data!\n";
98    my $buildcfg = &colcfg::read_build_cfg($buildconfigfile);
99    $self->{'starting_num_docs'}     = $buildcfg->{'numdocs'};
100        #print STDERR "- num_docs:     $self->{'starting_num_docs'}\n";
101    $self->{'starting_num_sections'} = $buildcfg->{'numsections'};
102        #print STDERR "- num_sections: $self->{'starting_num_sections'}\n";
103    $self->{'starting_num_bytes'}    = $buildcfg->{'numbytes'};
104        #print STDERR "- num_bytes:    $self->{'starting_num_bytes'}\n";
105    }
106    else
107      {
108        #print STDERR "NOT Found_Num_Data!\n";
109        $self->{'starting_num_docs'}     = 0;
110    $self->{'starting_num_sections'} = 0;
111    $self->{'starting_num_bytes'}    = 0;
112      }
113
114    $self->{'output_handle'} = "STDOUT";
115    $self->{'num_docs'}      = $self->{'starting_num_docs'};
116    $self->{'num_sections'}  = $self->{'starting_num_sections'};
117    $self->{'num_bytes'}     = $self->{'starting_num_bytes'};
118
119    $self->{'num_processed_bytes'} = 0;
120    $self->{'store_text'} = 1;
121
122    # what level (section/document) the database - indexer intersection is
123    $self->{'db_level'} = "section";
124    #used by browse interface
125    $self->{'doclist'} = [];
126
127    $self->{'indexing_text'} = 0;
128
129    return bless $self, $class;
130
131}
132
133sub reset {
134    my $self = shift (@_);
135
136    $self->{'num_docs'}      = $self->{'starting_num_docs'};
137    $self->{'num_sections'}  = $self->{'starting_num_sections'};
138    $self->{'num_bytes'}     = $self->{'starting_num_bytes'};
139   
140    $self->{'num_processed_bytes'} = 0;
141}
142
143sub zero_reset {
144    my $self = shift (@_);
145
146    $self->{'num_docs'}      = 0;
147    $self->{'num_sections'}  = 0;
148    # reconstructed docs have no text, just metadata, so we need to
149    # remember how many bytes we had initially
150    $self->{'num_bytes'}     = $self->{'starting_num_bytes'};
151   
152    $self->{'num_processed_bytes'} = 0;
153}
154
155sub is_incremental_capable
156{
157    # By default we return 'no' as the answer
158    # Safer to assume non-incremental to start with, and then override in
159    # inherited classes that are.
160
161    return 0;
162}
163
164sub get_num_docs {
165    my $self = shift (@_);
166
167    return $self->{'num_docs'};
168}
169
170sub get_num_sections {
171    my $self = shift (@_);
172
173    return $self->{'num_sections'};
174}
175
176# num_bytes is the actual number of bytes in the collection
177# this is normally the same as what's processed during text compression
178sub get_num_bytes {
179    my $self = shift (@_);
180
181    return $self->{'num_bytes'};
182}
183
184# num_processed_bytes is the number of bytes actually passed
185# to mg for the current index
186sub get_num_processed_bytes {
187    my $self = shift (@_);
188
189    return $self->{'num_processed_bytes'};
190}
191
192sub set_output_handle {
193    my $self = shift (@_);
194    my ($handle) = @_;
195
196    $self->{'output_handle'} = $handle;
197}
198
199
200sub set_mode {
201    my $self = shift (@_);
202    my ($mode) = @_;
203
204    $self->{'mode'} = $mode;
205}
206
207sub get_mode {
208    my $self = shift (@_);
209
210    return $self->{'mode'};
211}
212
213sub set_assocdir {
214    my $self = shift (@_);
215    my ($assocdir) = @_;
216
217    $self->{'assocdir'} = $assocdir;
218}
219
220sub set_dontdb {
221    my $self = shift (@_);
222    my ($dontdb) = @_;
223
224    $self->{'dontdb'} = $dontdb;
225}
226
227sub set_infodbtype
228{
229    my $self = shift(@_);
230    my $infodbtype = shift(@_);
231    $self->{'infodbtype'} = $infodbtype;
232}
233
234sub set_index {
235    my $self = shift (@_);
236    my ($index, $indexexparr) = @_;
237
238    $self->{'index'} = $index;
239    $self->{'indexexparr'} = $indexexparr if defined $indexexparr;
240}
241
242sub set_index_languages {
243    my $self = shift (@_);
244    my ($lang_meta, $langarr) = @_;
245    $self->{'lang_meta'} = $lang_meta;
246    $self->{'langarr'} = $langarr;
247}
248
249sub get_index {
250    my $self = shift (@_);
251
252    return $self->{'index'};
253}
254
255sub set_classifiers {
256    my $self = shift (@_);
257    my ($classifiers) = @_;
258
259    $self->{'classifiers'} = $classifiers;
260}
261
262sub set_indexing_text {
263    my $self = shift (@_);
264    my ($indexing_text) = @_;
265
266    $self->{'indexing_text'} = $indexing_text;
267}
268
269sub get_indexing_text {
270    my $self = shift (@_);
271
272    return $self->{'indexing_text'};
273}
274
275sub set_store_text {
276    my $self = shift (@_);
277    my ($store_text) = @_;
278
279    $self->{'store_text'} = $store_text;
280}
281
282sub set_store_metadata_coverage {
283    my $self = shift (@_);
284    my ($store_metadata_coverage) = @_;
285
286    $self->{'store_metadata_coverage'} = $store_metadata_coverage || "";
287}
288
289sub get_doc_list {
290    my $self = shift(@_);
291   
292    return @{$self->{'doclist'}};
293}
294
295# the standard database level is section, but you may want to change it to document
296sub set_db_level {
297    my $self= shift (@_);
298    my ($db_level) = @_;
299
300    $self->{'db_level'} = $db_level;
301}
302
303sub set_sections_index_document_metadata {
304    my $self= shift (@_);
305    my ($index_type) = @_;
306   
307    $self->{'sections_index_document_metadata'} = $index_type;
308}
309
310sub set_separate_cjk {
311    my $self = shift (@_);
312    my ($sep_cjk) = @_;
313
314    $self->{'separate_cjk'} = $sep_cjk;
315}
316
317sub process {
318    my $self = shift (@_);
319    my $method = $self->{'mode'};
320
321    $self->$method(@_);
322}
323
324# post process text depending on field. Currently don't do anything here
325# except cjk separation, and only for indexing
326# should only do this for indexed text (if $self->{'indexing_text'}),
327# but currently search term highlighting doesn't work if you do that.
328# once thats fixed up, then fix this.
329sub filter_text {
330    my $self = shift (@_);
331    my ($field, $text) = @_;
332
333    # lets do cjk seg here
334    my $new_text =$text;
335    if ($self->{'separate_cjk'}) {
336    $new_text = &cnseg::segment($text);
337    }
338    return $new_text;
339}
340
341
342sub infodb_metadata_stats
343{
344    my $self = shift (@_);
345    my ($field) = @_;
346
347    # Keep some statistics relating to metadata sets used and
348    # frequency of particular metadata fields within each set
349
350    # Union of metadata prefixes and frequency of fields
351    # (both scoped for this document alone, and across whole collection)
352   
353    if ($field =~ m/^(.+)\.(.*)$/) {
354    my $prefix = $1;
355    my $core_field = $2;
356
357    $self->{'doc_mdprefix_fields'}->{$prefix}->{$core_field}++;
358    $self->{'mdprefix_fields'}->{$prefix}->{$core_field}++;
359    }
360    elsif ($field =~ m/^[[:upper:]]/) {
361    # implicit 'ex' metadata set
362
363    $self->{'doc_mdprefix_fields'}->{'ex'}->{$field}++;
364    $self->{'mdprefix_fields'}->{'ex'}->{$field}++;
365    }
366
367}
368
369
370sub infodbedit {
371    my $self = shift (@_);
372    my ($doc_obj, $filename, $edit_mode) = @_;
373
374    # only output this document if it is a "indexed_doc" or "info_doc" (database only) document
375    my $doctype = $doc_obj->get_doc_type();
376    return if ($doctype ne "indexed_doc" && $doctype ne "info_doc");
377
378    my $archivedir = "";
379    if (defined $filename)
380    {
381    # doc_obj derived directly from file
382    my ($dir) = $filename =~ /^(.*?)(?:\/|\\)[^\/\\]*$/;
383    $dir = "" unless defined $dir;
384    $dir =~ s/\\/\//g;
385    $dir =~ s/^\/+//;
386    $dir =~ s/\/+$//;
387
388    $archivedir = $dir;
389
390    # resolve the final filenames of the files associated with this document
391    $self->assoc_files ($doc_obj, $archivedir);
392    }
393    else
394    {
395    # doc_obj reconstructed from database (has metadata, doc structure but no text)
396    my $top_section = $doc_obj->get_top_section();
397    $archivedir = $doc_obj->get_metadata_element($top_section,"archivedir");
398    }
399
400    if (($edit_mode eq "add") || ($edit_mode eq "reindex")) {
401    #add this document to the browse structure
402    push(@{$self->{'doclist'}},$doc_obj->get_OID())
403        unless ($doctype eq "classification");
404    }
405    else {
406    # delete => remove this doc from browse structure
407    my $del_doc_oid = $doc_obj->get_OID();
408
409    my @filtered_doc_list = ();
410    foreach my $oid (@{$self->{'doclist'}}) {
411        push(@filtered_doc_list,$oid) if ($oid ne $del_doc_oid);
412    }
413    $self->{'doclist'} = \@filtered_doc_list;
414    }
415
416
417    # classify this document
418    &classify::classify_doc ($self->{'classifiers'}, $doc_obj, $edit_mode);
419
420    if (($edit_mode eq "add") || ($edit_mode eq "reindex")) {
421    # this is another document
422    $self->{'num_docs'} += 1 unless ($doctype eq "classification");
423    }
424    else {
425    # delete
426    $self->{'num_docs'} -= 1 unless ($doctype eq "classification");
427    return;
428    }
429
430    # is this a paged or a hierarchical document
431    my ($thistype, $childtype) = $self->get_document_type ($doc_obj);
432
433    my $section = $doc_obj->get_top_section ();
434    my $doc_OID = $doc_obj->get_OID();
435    my $first = 1;
436    my $infodb_handle = $self->{'output_handle'};
437
438    $self->{'doc_mdprefix_fields'} = {};
439
440    while (defined $section)
441    {
442    my $section_OID = $doc_OID;
443    if ($section ne "")
444    {
445        $section_OID = $doc_OID . "." . $section;
446    }
447    my %section_infodb = ();
448
449    # update a few statistics
450    $self->{'num_bytes'} += $doc_obj->get_text_length ($section);
451    $self->{'num_sections'} += 1 unless ($doctype eq "classification");
452
453    # output the fact that this document is a document (unless doctype
454    # has been set to something else from within a plugin
455    my $dtype = $doc_obj->get_metadata_element ($section, "doctype");
456    if (!defined $dtype || $dtype !~ /\w/) {
457        $section_infodb{"doctype"} = [ "doc" ];
458    }
459
460    # Output whether this node contains text
461    #
462    # If doc_obj reconstructed from database file then no need to
463    # explicitly add <hastxt> as this is preserved as metadata when
464    # the database file is loaded in
465    if (defined $filename)
466    {
467        # doc_obj derived directly from file
468        if ($doc_obj->get_text_length($section) > 0) {
469        $section_infodb{"hastxt"} = [ "1" ];
470        } else {
471        $section_infodb{"hastxt"} = [ "0" ];
472        }
473    }
474
475    # output all the section metadata
476    my $metadata = $doc_obj->get_all_metadata ($section);
477    foreach my $pair (@$metadata) {
478        my ($field, $value) = (@$pair);
479
480        if ($field ne "Identifier" && $field !~ /^gsdl/ &&
481        defined $value && $value ne "") {       
482
483        # escape problematic stuff
484        $value =~ s/\\/\\\\/g;
485        $value =~ s/\n/\\n/g;
486        $value =~ s/\r/\\r/g;
487
488        # special case for URL metadata
489        if ($field =~ /^URL$/i) {
490            &dbutil::write_infodb_entry($self->{'infodbtype'}, $infodb_handle, $value, { 'section' => [ $section_OID ] });
491        }
492
493        if (!defined $self->{'dontdb'}->{$field}) {
494            push(@{$section_infodb{$field}}, $value);
495
496            if ($section eq "" && $self->{'store_metadata_coverage'} =~ /^true$/i)
497            {
498            $self->infodb_metadata_stats($field);
499            }
500        }
501        }
502    }
503
504    if ($section eq "")
505    {
506        my $doc_mdprefix_fields = $self->{'doc_mdprefix_fields'};
507
508        foreach my $prefix (keys %$doc_mdprefix_fields)
509        {
510        push(@{$section_infodb{"metadataset"}}, $prefix);
511
512        foreach my $field (keys %{$doc_mdprefix_fields->{$prefix}})
513        {
514            push(@{$section_infodb{"metadatalist-$prefix"}}, $field);
515
516            my $val = $doc_mdprefix_fields->{$prefix}->{$field};
517            push(@{$section_infodb{"metadatafreq-$prefix-$field"}}, $val);
518        }
519        }
520    }
521
522    # If doc_obj reconstructed from database file then no need to
523    # explicitly add <archivedir> as this is preserved as metadata when
524    # the database file is loaded in
525    if (defined $filename)
526    {
527        # output archivedir if at top level
528        if ($section eq $doc_obj->get_top_section()) {
529        $section_infodb{"archivedir"} = [ $archivedir ];
530        }
531    }
532
533    # output document display type
534    if ($first) {
535        $section_infodb{"thistype"} = [ $thistype ];
536    }
537
538    if ($self->{'db_level'} eq "document") {
539        # doc num is num_docs not num_sections
540        # output the matching document number
541        $section_infodb{"docnum"} = [ $self->{'num_docs'} ];
542    }
543    else {
544        # output a list of children
545        my $children = $doc_obj->get_children ($section);
546        if (scalar(@$children) > 0) {
547        $section_infodb{"childtype"} = [ $childtype ];
548        my $contains = "";
549        foreach my $child (@$children)
550        {
551            $contains .= ";" unless ($contains eq "");
552            if ($child =~ /^.*?\.(\d+)$/)
553            {
554            $contains .= "\".$1";
555            }
556            else
557            {
558            $contains .= "\".$child";
559            }
560        }
561        $section_infodb{"contains"} = [ $contains ];
562        }
563        # output the matching doc number
564        $section_infodb{"docnum"} = [ $self->{'num_sections'} ];
565    }
566   
567    &dbutil::write_infodb_entry($self->{'infodbtype'}, $infodb_handle, $section_OID, \%section_infodb);
568   
569    # output a database entry for the document number, except for Lucene (which no longer needs this information)
570    unless (ref($self) eq "lucenebuildproc")
571    {
572        if ($self->{'db_level'} eq "document") {
573        &dbutil::write_infodb_entry($self->{'infodbtype'}, $infodb_handle, $self->{'num_docs'}, { 'section' => [ $doc_OID ] });
574        }
575        else {
576        &dbutil::write_infodb_entry($self->{'infodbtype'}, $infodb_handle, $self->{'num_sections'}, { 'section' => [ $section_OID ] });
577        }
578    }
579
580    $first = 0;
581    $section = $doc_obj->get_next_section($section);
582    last if ($self->{'db_level'} eq "document"); # if no sections wanted, only add the docs
583    }
584}
585
586
587
588
589sub infodb {
590    my $self = shift (@_);
591    my ($doc_obj, $filename) = @_;
592
593    $self->infodbedit($doc_obj,$filename,"add");
594}
595
596sub infodbreindex {
597    my $self = shift (@_);
598    my ($doc_obj, $filename) = @_;
599
600    $self->infodbedit($doc_obj,$filename,"reindex");
601}
602
603sub infodbdelete {
604    my $self = shift (@_);
605    my ($doc_obj, $filename) = @_;
606
607    $self->infodbedit($doc_obj,$filename,"delete");
608}
609
610
611sub text {
612    my $self = shift (@_);
613    my ($doc_obj) = @_;
614   
615    my $handle = $self->{'outhandle'};
616    print $handle "basebuildproc::text function must be implemented in sub classes\n";
617    die "\n";
618}
619
620sub textreindex
621{
622    my $self = shift @_;
623
624    my $outhandle = $self->{'outhandle'};
625    print $outhandle "basebuildproc::textreindex function must be implemented in sub classes\n";
626    if (!$self->is_incremental_capable()) {
627
628    print $outhandle "  This operation is only possible with indexing tools with that support\n";
629    print $outhandle "  incremental building\n";
630    }
631    die "\n";
632}
633
634sub textdelete
635{
636    my $self = shift @_;
637
638    my $outhandle = $self->{'outhandle'};
639    print $outhandle "basebuildproc::textdelete function must be implemented in sub classes\n";
640    if (!$self->is_incremental_capable()) {
641
642    print $outhandle "  This operation is only possible with indexing tools with that support\n";
643    print $outhandle "  incremental building\n";
644    }
645    die "\n";
646}
647
648
649# should the document be indexed - according to the subcollection and language
650# specification.
651sub is_subcollection_doc {
652    my $self = shift (@_);
653    my ($doc_obj) = @_;
654   
655    my $indexed_doc = 1;
656    foreach my $indexexp (@{$self->{'indexexparr'}}) {
657    $indexed_doc = 0;
658    my ($field, $exp, $options) = split /\//, $indexexp;
659    if (defined ($field) && defined ($exp)) {
660        my ($bool) = $field =~ /^(.)/;
661        $field =~ s/^.// if $bool eq '!';
662        my @metadata_values;
663        if ($field =~ /^filename$/i) {
664        push(@metadata_values, $doc_obj->get_source_filename());
665        }
666        else {
667        @metadata_values = @{$doc_obj->get_metadata($doc_obj->get_top_section(), $field)};
668        }
669        next unless @metadata_values;
670        foreach my $metadata_value (@metadata_values) {
671        if ($bool eq '!') {
672            if ($options =~ /^i$/i) {
673            if ($metadata_value !~ /$exp/i) {$indexed_doc = 1; last;}
674            } else {
675            if ($metadata_value !~ /$exp/) {$indexed_doc = 1; last;}
676            }
677        } else {
678            if ($options =~ /^i$/i) {
679            if ($metadata_value =~ /$exp/i) {$indexed_doc = 1; last;}
680            } else {
681            if ($metadata_value =~ /$exp/) {$indexed_doc = 1; last;}
682            }
683        }
684        }
685
686        last if ($indexed_doc == 1);
687    }
688    }
689   
690    # if this doc is so far in the sub collection, and we have lang info,
691    # now we check the languages to see if it matches
692    if($indexed_doc && defined $self->{'lang_meta'}) {
693    $indexed_doc = 0;
694    my $field = $doc_obj->get_metadata_element($doc_obj->get_top_section(), $self->{'lang_meta'});
695    if (defined $field) {
696        foreach my $lang (@{$self->{'langarr'}}) {
697        my ($bool) = $lang =~ /^(.)/;
698        if ($bool eq '!') {
699            $lang =~ s/^.//;
700            if ($field !~ /$lang/) {
701            $indexed_doc = 1; last;
702            }
703        } else {
704            if ($field =~ /$lang/) {
705            $indexed_doc = 1; last;
706            }
707        }
708        }
709    }
710    }
711    return $indexed_doc;
712   
713}
714
715# use 'Paged' if document has no more than 2 levels
716# and each section at second level has a number for
717# Title metadata
718# also use Paged if gsdlthistype metadata is set to Paged
719sub get_document_type {
720    my $self = shift (@_);
721    my ($doc_obj) = @_;
722
723    my $thistype = "VList";
724    my $childtype = "VList";
725    my $title;
726    my @tmp = ();
727   
728    my $section = $doc_obj->get_top_section ();
729   
730    my $gsdlthistype = $doc_obj->get_metadata_element ($section, "gsdlthistype");
731    if (defined $gsdlthistype) {
732    if ($gsdlthistype eq "Paged") {
733        $childtype = "Paged";
734        if ($doc_obj->get_text_length ($doc_obj->get_top_section())) {
735        $thistype = "Paged";
736        } else {
737        $thistype = "Invisible";
738        }
739       
740        return ($thistype, $childtype);
741    } elsif ($gsdlthistype eq "Hierarchy") {
742        return ($thistype, $childtype); # use VList, VList
743    }
744    }
745    my $first = 1;
746    while (defined $section) {
747    @tmp = split /\./, $section;
748    if (scalar(@tmp) > 1) {
749        return ($thistype, $childtype);
750    }
751    if (!$first) {
752        $title = $doc_obj->get_metadata_element ($section, "Title");
753        if (!defined $title || $title !~ /^\d+$/) {
754        return ($thistype, $childtype);
755        }
756    }
757    $first = 0;
758    $section = $doc_obj->get_next_section($section);
759    }
760    if ($doc_obj->get_text_length ($doc_obj->get_top_section())) {
761    $thistype = "Paged";
762    } else {
763    $thistype = "Invisible";
764    }
765    $childtype = "Paged";
766    return ($thistype, $childtype);
767}
768
769sub assoc_files
770{
771    my $self = shift (@_);
772    my ($doc_obj, $archivedir) = @_;
773    my ($afile);
774   
775    foreach my $assoc_file (@{$doc_obj->get_assoc_files()}) {
776      #rint STDERR "Processing associated file - copy " . $assoc_file->[0] . " to " . $assoc_file->[1] . "\n";
777    # if assoc file starts with a slash, we put it relative to the assoc
778    # dir, otherwise it is relative to the HASH... directory
779    if ($assoc_file->[1] =~ m@^[/\\]@) {
780        $afile = &util::filename_cat($self->{'assocdir'}, $assoc_file->[1]);
781    } else {
782        $afile = &util::filename_cat($self->{'assocdir'}, $archivedir, $assoc_file->[1]);
783    }
784    &util::hard_link ($assoc_file->[0], $afile, $self->{'verbosity'});
785    }
786}
787
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