source: gsdl/trunk/perllib/plugouts/BasePlugout.pm@ 18441

Last change on this file since 18441 was 18441, checked in by davidb, 15 years ago

Modifications for incremental building to support files that need to be deleted
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File size: 26.3 KB
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1###########################################################################
2#
3# BasePlugout.pm -- base class for all the plugout modules
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) 2006 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
26package BasePlugout;
27
28eval {require bytes};
29
30use strict;
31no strict 'subs';
32no strict 'refs';
33
34use gsprintf 'gsprintf';
35use printusage;
36use parse2;
37use GDBMUtils;
38
39
40# suppress the annoying "subroutine redefined" warning that various
41# gets cause under perl 5.6
42$SIG{__WARN__} = sub {warn($_[0]) unless ($_[0] =~ /Subroutine\s+\S+\sredefined/)};
43
44my $arguments = [
45 { 'name' => "group_size",
46 'desc' => "{BasPlugout.group_size}",
47 'type' => "int",
48 'deft' => "1",
49 'reqd' => "no",
50 'hiddengli' => "no"},
51 { 'name' => "output_info",
52 'desc' => "{BasPlugout.output_info}",
53 'type' => "string",
54 'reqd' => "yes",
55 'hiddengli' => "yes"},
56 { 'name' => "xslt_file",
57 'desc' => "{BasPlugout.xslt_file}",
58 'type' => "string",
59 'reqd' => "no",
60 'hiddengli' => "no"},
61 { 'name' => "output_handle",
62 'desc' => "{BasPlugout.output_handle}",
63 'type' => "string",
64 'deft' => 'STDERR',
65 'reqd' => "no",
66 'hiddengli' => "yes"},
67 { 'name' => "verbosity",
68 'desc' => "{BasPlugout.verbosity}",
69 'type' => "int",
70 'deft' => "0",
71 'reqd' => "no",
72 'hiddengli' => "no"},
73 { 'name' => "gzip_output",
74 'desc' => "{BasPlugout.gzip_output}",
75 'type' => "flag",
76 'reqd' => "no",
77 'hiddengli' => "no"},
78 { 'name' => "debug",
79 'desc' => "{BasPlugout.debug}",
80 'type' => "flag",
81 'reqd' => "no",
82 'hiddengli' => "yes"}
83];
84
85my $options = { 'name' => "BasePlugout",
86 'desc' => "{BasPlugout.desc}",
87 'abstract' => "yes",
88 'inherits' => "no",
89 'args' => $arguments};
90
91sub new
92{
93 my $class = shift (@_);
94
95 my ($plugoutlist,$args,$hashArgOptLists) = @_;
96 push(@$plugoutlist, $class);
97
98 my $strPlugoutName = (defined $plugoutlist->[0]) ? $plugoutlist->[0] : $class;
99
100 push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
101 push(@{$hashArgOptLists->{"OptList"}},$options);
102
103 my $self = {};
104 $self->{'plugout_type'} = $class;
105 $self->{'option_list'} = $hashArgOptLists->{"OptList"};
106 $self->{"info_only"} = 0;
107
108 # Check if gsdlinfo is in the argument list or not - if it is, don't parse
109 # the args, just return the object.
110 foreach my $strArg (@{$args})
111 {
112 if(defined $strArg && $strArg eq "-gsdlinfo")
113 {
114 $self->{"info_only"} = 1;
115 return bless $self, $class;
116 }
117 }
118
119 delete $self->{"info_only"};
120
121 if(parse2::parse($args,$hashArgOptLists->{"ArgList"},$self) == -1)
122 {
123 my $classTempClass = bless $self, $class;
124 print STDERR "<BadPlugout d=$self->{'plugout_name'}>\n";
125 &gsprintf(STDERR, "\n{BasPlugout.bad_general_option}\n", $self->{'plugout_name'});
126 $classTempClass->print_txt_usage(""); # Use default resource bundle
127 die "\n";
128 }
129
130
131 if(defined $self->{'xslt_file'} && $self->{'xslt_file'} ne "")
132 {
133 ##$self->{'xslt_file'} =~ s/\"//g;##working on Windows???
134 print STDERR "Can not find $self->{'xslt_file'}, please make sure you have supplied the correct file path\n" and die "\n" unless (-e $self->{'xslt_file'});
135 }
136
137 $self->{'gs_count'} = 0;
138
139 $self->{'keep_import_structure'} = 0;
140
141 return bless $self, $class;
142
143}
144
145sub print_xml_usage
146{
147 my $self = shift(@_);
148 my $header = shift(@_);
149 my $high_level_information_only = shift(@_);
150
151 # XML output is always in UTF-8
152 gsprintf::output_strings_in_UTF8;
153
154 if ($header) {
155 &PrintUsage::print_xml_header("plugout");
156 }
157 $self->print_xml($high_level_information_only);
158}
159
160
161sub print_xml
162{
163 my $self = shift(@_);
164 my $high_level_information_only = shift(@_);
165
166 my $optionlistref = $self->{'option_list'};
167 my @optionlist = @$optionlistref;
168 my $plugoutoptions = shift(@$optionlistref);
169 return if (!defined($plugoutoptions));
170
171 gsprintf(STDERR, "<PlugoutInfo>\n");
172 gsprintf(STDERR, " <Name>$plugoutoptions->{'name'}</Name>\n");
173 my $desc = gsprintf::lookup_string($plugoutoptions->{'desc'});
174 $desc =~ s/</&amp;lt;/g; # doubly escaped
175 $desc =~ s/>/&amp;gt;/g;
176 gsprintf(STDERR, " <Desc>$desc</Desc>\n");
177 gsprintf(STDERR, " <Abstract>$plugoutoptions->{'abstract'}</Abstract>\n");
178 gsprintf(STDERR, " <Inherits>$plugoutoptions->{'inherits'}</Inherits>\n");
179 unless (defined($high_level_information_only)) {
180 gsprintf(STDERR, " <Arguments>\n");
181 if (defined($plugoutoptions->{'args'})) {
182 &PrintUsage::print_options_xml($plugoutoptions->{'args'});
183 }
184 gsprintf(STDERR, " </Arguments>\n");
185
186 # Recurse up the plugout hierarchy
187 $self->print_xml();
188 }
189 gsprintf(STDERR, "</PlugoutInfo>\n");
190}
191
192
193sub print_txt_usage
194{
195 my $self = shift(@_);
196
197 # Print the usage message for a plugout (recursively)
198 my $descoffset = $self->determine_description_offset(0);
199 $self->print_plugout_usage($descoffset, 1);
200}
201
202sub determine_description_offset
203{
204 my $self = shift(@_);
205 my $maxoffset = shift(@_);
206
207 my $optionlistref = $self->{'option_list'};
208 my @optionlist = @$optionlistref;
209 my $plugoutoptions = pop(@$optionlistref);
210 return $maxoffset if (!defined($plugoutoptions));
211
212 # Find the length of the longest option string of this download
213 my $plugoutargs = $plugoutoptions->{'args'};
214 if (defined($plugoutargs)) {
215 my $longest = &PrintUsage::find_longest_option_string($plugoutargs);
216 if ($longest > $maxoffset) {
217 $maxoffset = $longest;
218 }
219 }
220
221 # Recurse up the download hierarchy
222 $maxoffset = $self->determine_description_offset($maxoffset);
223 $self->{'option_list'} = \@optionlist;
224 return $maxoffset;
225}
226
227
228sub print_plugout_usage
229{
230 my $self = shift(@_);
231 my $descoffset = shift(@_);
232 my $isleafclass = shift(@_);
233
234 my $optionlistref = $self->{'option_list'};
235 my @optionlist = @$optionlistref;
236 my $plugoutoptions = shift(@$optionlistref);
237 return if (!defined($plugoutoptions));
238
239 my $plugoutname = $plugoutoptions->{'name'};
240 my $plugoutargs = $plugoutoptions->{'args'};
241 my $plugoutdesc = $plugoutoptions->{'desc'};
242
243 # Produce the usage information using the data structure above
244 if ($isleafclass) {
245 if (defined($plugoutdesc)) {
246 gsprintf(STDERR, "$plugoutdesc\n\n");
247 }
248 gsprintf(STDERR, " {common.usage}: plugout $plugoutname [{common.options}]\n\n");
249 }
250
251 # Display the download options, if there are some
252 if (defined($plugoutargs)) {
253 # Calculate the column offset of the option descriptions
254 my $optiondescoffset = $descoffset + 2; # 2 spaces between options & descriptions
255
256 if ($isleafclass) {
257 gsprintf(STDERR, " {common.specific_options}:\n");
258 }
259 else {
260 gsprintf(STDERR, " {common.general_options}:\n", $plugoutname);
261 }
262
263 # Display the download options
264 &PrintUsage::print_options_txt($plugoutargs, $optiondescoffset);
265 }
266
267 # Recurse up the download hierarchy
268 $self->print_plugout_usage($descoffset, 0);
269 $self->{'option_list'} = \@optionlist;
270}
271
272
273sub error
274{
275 my ($strFunctionName,$strError) = @_;
276 {
277 print "Error occoured in BasePlugout.pm\n".
278 "In Function: ".$strFunctionName."\n".
279 "Error Message: ".$strError."\n";
280 exit(-1);
281 }
282}
283
284# OIDtype may be "hash" or "incremental" or "dirname" or "assigned"
285sub set_OIDtype {
286 my $self = shift (@_);
287 my ($type, $metadata) = @_;
288
289 if ($type =~ /^(hash|incremental|dirname|assigned)$/) {
290 $self->{'OIDtype'} = $type;
291 } else {
292 $self->{'OIDtype'} = "hash";
293 }
294 if ($type =~ /^assigned$/) {
295 if (defined $metadata) {
296 $self->{'OIDmetadata'} = $metadata;
297 } else {
298 $self->{'OIDmetadata'} = "dc.Identifier";
299 }
300 }
301}
302
303sub set_output_dir
304{
305 my $self = shift @_;
306 my ($output_dir) = @_;
307
308 $self->{'output_dir'} = $output_dir;
309}
310
311sub setoutputdir
312{
313 my $self = shift @_;
314 my ($output_dir) = @_;
315
316 $self->{'output_dir'} = $output_dir;
317}
318
319sub get_output_dir
320{
321 my $self = shift (@_);
322
323 return $self->{'output_dir'};
324}
325
326sub getoutputdir
327{
328 my $self = shift (@_);
329
330 return $self->{'output_dir'};
331}
332
333sub getoutputinfo
334{
335 my $self = shift (@_);
336
337 return $self->{'output_info'};
338}
339
340
341sub get_output_handler
342{
343 my $self = shift (@_);
344
345 my ($output_file_name) = @_;
346
347 open(*OUTPUT, ">$output_file_name") or die "Can not open a file handler for $output_file_name\n";
348
349 return *OUTPUT;
350}
351
352sub release_output_handler
353{
354 my $self = shift (@_);
355 my ($outhandler) = @_;
356
357 close($outhandler);
358
359}
360
361sub output_xml_header {
362 my $self = shift (@_);
363 my ($handle,$docroot,$nondoctype) = @_;
364
365 print $handle '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . "\n";
366
367 if (!defined $nondoctype){
368 print $handle '<!DOCTYPE Archive SYSTEM "http://greenstone.org/dtd/Archive/1.0/Archive.dtd">' . "\n";
369 }
370
371 print $handle "<$docroot>\n" if defined $docroot;
372}
373
374sub output_xml_footer {
375 my $self = shift (@_);
376 my ($handle,$docroot) = @_;
377 print $handle "</$docroot>\n" if defined $docroot;
378}
379
380sub process {
381 my $self = shift (@_);
382 my ($doc_obj) = @_;
383
384 $doc_obj->set_lastmodified();
385
386 if ($self->{'group_size'} > 1) {
387 $self->group_process ($doc_obj);
388 return;
389 }
390
391 my $OID = $doc_obj->get_OID();
392 $OID = "NULL" unless defined $OID;
393
394 my $top_section = $doc_obj->get_top_section();
395
396 #get document's directory
397 my $doc_dir = $self->get_doc_dir ($OID, $doc_obj->get_source_filename());
398
399 my $output_info = $self->{'output_info'};
400 return if (!defined $output_info);
401
402 ##############################
403 # call subclass' saveas method
404 ##############################
405 $self->saveas($doc_obj,$doc_dir);
406 $self->archiveinf_gdbm($doc_obj,$doc_dir);
407
408}
409
410sub store_output_info_reference {
411 my $self = shift (@_);
412 my ($doc_obj) = @_;
413
414 my $output_info = $self->{'output_info'};
415 my $metaname = $self->{'sortmeta'};
416 if (!defined $metaname || $metaname !~ /\S/) {
417 $output_info->add_info($doc_obj->get_OID(),$self->{'short_doc_file'}, undef, "");
418 return;
419 }
420
421 my $metadata = "";
422 my $top_section = $doc_obj->get_top_section();
423
424 my @commameta_list = split(/,/, $metaname);
425 foreach my $cmn (@commameta_list) {
426 my $meta = $doc_obj->get_metadata_element($top_section, $cmn);
427 if ($meta) {
428 # do remove prefix/suffix - this will apply to all values
429 $meta =~ s/^$self->{'removeprefix'}// if defined $self->{'removeprefix'};
430 $meta =~ s/$self->{'removesuffix'}$// if defined $self->{'removesuffix'};
431 $meta = &sorttools::format_metadata_for_sorting($cmn, $meta, $doc_obj);
432 $metadata .= $meta if ($meta);
433 }
434 }
435
436 # store reference in the output_info
437 $output_info->add_info($doc_obj->get_OID(),$self->{'short_doc_file'}, undef, $metadata);
438
439}
440
441sub group_process {
442
443 my $self = shift (@_);
444 my ($doc_obj) = @_;
445
446 my $OID = $doc_obj->get_OID();
447 $OID = "NULL" unless defined $OID;
448
449 my $groupsize = $self->{'group_size'};
450 my $gs_count = $self->{'gs_count'};
451 my $open_new_file = (($gs_count % $groupsize)==0);
452 my $outhandle = $self->{'output_handle'};
453
454 # opening a new file, or document has assoicated files => directory needed
455 if (($open_new_file) || (scalar(@{$doc_obj->get_assoc_files()})>0)) {
456
457 # The directory the archive file (doc.xml) and all associated files
458 # should end up in
459 my $doc_dir;
460 # If we've determined its time for a new file, open it now
461 if ($open_new_file || !defined($self->{'gs_doc_dir'}))
462 {
463 $doc_dir = $self->get_doc_dir ($OID, $doc_obj->get_source_filename());
464 # only if opening new file
465 my $output_dir = $self->get_output_dir();
466 &util::mk_all_dir ($output_dir) unless -e $output_dir;
467 my $doc_file = &util::filename_cat ($output_dir, $doc_dir, "doc.xml");
468 my $short_doc_file = &util::filename_cat ($doc_dir, "doc.xml");
469
470 if ($gs_count>0)
471 {
472 return if (!$self->close_file_output());
473 }
474
475 open (GROUPPROCESS, ">$doc_file") or (print $outhandle "BasePlugout::group_process could not write to file $doc_file\n" and return);
476
477
478 $self->{'gs_filename'} = $doc_file;
479 $self->{'short_doc_file'} = $short_doc_file;
480 $self->{'gs_OID'} = $OID;
481 $self->{'gs_doc_dir'} = $doc_dir;
482
483 $self->output_xml_header('BasePlugout::GROUPPROCESS','Archive');
484 }
485 # Otherwise load the same archive document directory used last time
486 else
487 {
488 $doc_dir = $self->{'gs_doc_dir'};
489 }
490
491 # copy all the associated files, add this information as metadata
492 # to the document
493 print $outhandle "Writing associated files to $doc_dir\n";
494 $self->process_assoc_files ($doc_obj, $doc_dir);
495 }
496
497 # save this document
498 my $section_text = &docprint::get_section_xml($doc_obj,$doc_obj->get_top_section());
499 print GROUPPROCESS $section_text;
500
501 $self->{'gs_count'}++;
502}
503
504
505sub saveas {
506 my $self = shift (@_);
507
508 die "Basplug::saveas function must be implemented in sub classes\n";
509}
510
511sub get_doc_dir {
512 my $self = shift (@_);
513 my ($OID, $source_filename) = @_;
514
515 my $working_dir = $self->get_output_dir();
516 my $working_info = $self->{output_info};
517 return if (!defined $working_info);
518
519 my $doc_info = $working_info->get_info($OID);
520 my $doc_dir = '';
521
522 if (defined $doc_info && scalar(@$doc_info) >= 1)
523 {
524 # This OID already has an archives directory, so use it again
525 $doc_dir = $doc_info->[0];
526 $doc_dir =~ s/\/?((doc(mets)?)|(dublin_core))\.xml(\.gz)?$//;
527 }
528 elsif ($self->{'keep_import_structure'})
529 {
530 $source_filename = &File::Basename::dirname($source_filename);
531 $source_filename =~ s/[\\\/]+/\//g;
532 $source_filename =~ s/\/$//;
533
534 $doc_dir = substr($source_filename, length($ENV{'GSDLIMPORTDIR'}) + 1);
535 }
536
537 # We have to use a new archives directory for this document
538 if ($doc_dir eq "")
539 {
540 $doc_dir = $self->get_new_doc_dir ($working_info, $working_dir, $OID);
541 }
542
543 if (!defined $self->{'group'} || !$self->{'group'}){
544 &util::mk_all_dir (&util::filename_cat ($working_dir, $doc_dir));
545 }
546
547 return $doc_dir;
548}
549
550sub get_new_doc_dir{
551 my $self = shift (@_);
552 my($working_info,$working_dir,$OID) = @_;
553
554 my $doc_dir = "";
555 my $doc_dir_rest = $OID;
556 my $doc_dir_num = 0;
557
558 do {
559 $doc_dir .= "/" if $doc_dir_num > 0;
560 if ($doc_dir_rest =~ s/^(.{1,8})//) {
561 $doc_dir .= $1;
562 $doc_dir_num++;
563 }
564 } while ($doc_dir_rest ne "" &&
565 ((-d &util::filename_cat ($working_dir, "$doc_dir.dir")) ||
566 ($working_info->size() >= 1024 && $doc_dir_num < 2)));
567 my $i = 1;
568 my $doc_dir_base = $doc_dir;
569 while (-d &util::filename_cat ($working_dir, "$doc_dir.dir")) {
570 $doc_dir = "$doc_dir_base-$i";
571 $i++;
572 }
573
574 return "$doc_dir.dir";
575}
576
577sub process_assoc_files {
578 my $self = shift (@_);
579 my ($doc_obj, $doc_dir, $handle) = @_;
580
581 my $outhandle = $self->{'output_handle'};
582
583 my $output_dir = $self->get_output_dir();
584 return if (!defined $output_dir);
585
586 &util::mk_all_dir ($output_dir) unless -e $output_dir;
587
588 my $working_dir = &util::filename_cat($output_dir, $doc_dir);
589 &util::mk_all_dir ($working_dir) unless -e $working_dir;
590
591 my @assoc_files = ();
592 my $filename;;
593
594 my $source_filename = $doc_obj->get_source_filename();
595
596 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
597
598 if (defined $collect_dir) {
599 my $dirsep_regexp = &util::get_os_dirsep();
600
601 if ($collect_dir !~ /$dirsep_regexp$/) {
602 $collect_dir .= &util::get_dirsep(); # ensure there is a slash at the end
603 }
604
605 # This test is never going to fail on Windows -- is this a problem?
606
607 if ($source_filename !~ /^$dirsep_regexp/) {
608 $source_filename = &util::filename_cat($collect_dir, $source_filename);
609 }
610 }
611
612
613 # set the assocfile path (even if we have no assoc files - need this for lucene)
614 $doc_obj->set_utf8_metadata_element ($doc_obj->get_top_section(),
615 "assocfilepath",
616 "$doc_dir");
617 foreach my $assoc_file_rec (@{$doc_obj->get_assoc_files()}) {
618 my ($dir, $afile) = $assoc_file_rec->[1] =~ /^(.*?)([^\/\\]+)$/;
619 $dir = "" unless defined $dir;
620
621
622 my $real_filename = $assoc_file_rec->[0];
623 # for some reasons the image associate file has / before the full path
624 $real_filename =~ s/^\\(.*)/$1/i;
625 if (-e $real_filename) {
626
627 $filename = &util::filename_cat($working_dir, $afile);
628
629 &util::hard_link ($real_filename, $filename);
630
631 $doc_obj->add_utf8_metadata ($doc_obj->get_top_section(),
632 "gsdlassocfile",
633 "$afile:$assoc_file_rec->[2]:$dir");
634 } elsif ($self->{'verbosity'} > 2) {
635 print $outhandle "BasePlugout::process couldn't copy the associated file " .
636 "$real_filename to $afile\n";
637 }
638 }
639}
640
641
642sub archiveinf_gdbm
643{
644 my $self = shift (@_);
645 my ($doc_obj) = @_;
646
647 my $verbosity = $self->{'verbosity'};
648
649 my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
650 if (defined $collect_dir) {
651 my $dirsep_regexp = &util::get_os_dirsep();
652
653 if ($collect_dir !~ /$dirsep_regexp$/) {
654 # ensure there is a slash at the end
655 $collect_dir .= &util::get_dirsep();
656 }
657 }
658
659 my $oid = $doc_obj->get_OID();
660 my $source_filename = $doc_obj->get_source_filename();
661
662 my $working_info = $self->{'output_info'};
663 my $doc_info = $working_info->get_info($oid);
664 my ($doc_file,$index_status) = @$doc_info;
665
666 my $oid_files = { 'doc-file' => $doc_file,
667 'index-status' => $index_status,
668 'src-file' => $source_filename,
669 'assoc-files' => [] };
670
671 my @reverse_lookups = ($source_filename);
672
673 foreach my $assoc_file_rec (@{$doc_obj->get_assoc_files()}) {
674 my $real_filename = $assoc_file_rec->[0];
675 my $full_afile = $assoc_file_rec->[1];
676
677 # for some reasons the image associate file has / before the full path
678 $real_filename =~ s/^\\(.*)/$1/i;
679 if (-e $real_filename) {
680
681 if (defined $collect_dir) {
682 my $collect_dir_re_safe = $collect_dir;
683 $collect_dir_re_safe =~ s/\\/\\\\/g;
684 $collect_dir_re_safe =~ s/\./\\./g;
685
686 $real_filename =~ s/^$collect_dir_re_safe//;
687 }
688
689 push(@reverse_lookups,$real_filename);
690
691 push(@{$oid_files->{'assoc-files'}},$full_afile);
692
693 }
694 else {
695 print STDERR "Warning: archiveinf_gdbm()\n $real_filename does not appear to be on the file system\n";
696 }
697 }
698
699 # better not to commit to a particular db implementation, but
700 # for simplicity, will use GDBM for now.
701
702 my $output_dir = $self->{'output_dir'};
703 my $db_ext = &util::is_little_endian() ? ".ldb" : ".bdb";
704
705 my $doc_db = &util::filename_cat($output_dir,"archiveinf-doc$db_ext");
706 my $src_db = &util::filename_cat($output_dir,"archiveinf-src$db_ext");
707
708 my $doc_db_text = "";
709 $doc_db_text .= "<doc-file>$oid_files->{'doc-file'}\n";
710 $doc_db_text .= "<index-status>$oid_files->{'index-status'}\n";
711 $doc_db_text .= "<src-file>$oid_files->{'src-file'}\n";
712 foreach my $af (@{$oid_files->{'assoc-files'}}) {
713 $doc_db_text .= "<assoc-file>$af\n";
714 }
715 chomp($doc_db_text); # remove trailing \n
716
717 ## print STDERR "*** To set in db: \n\t$doc_db\n\t$oid\n\t$doc_db_text\n";
718 &GDBMUtils::gdbmDatabaseSet($doc_db,$oid,$doc_db_text);
719
720 foreach my $rl (@reverse_lookups) {
721 &GDBMUtils::gdbmDatabaseAppend($src_db,$rl,"<oid>$oid\n");
722 }
723
724}
725
726
727sub set_sortmeta {
728 my $self = shift (@_);
729 my ($sortmeta, $removeprefix, $removesuffix) = @_;
730
731 $self->{'sortmeta'} = $sortmeta;
732 if (defined ($removeprefix) && $removeprefix ) {
733 $removeprefix =~ s/^\^//; # don't need a leading ^
734 $self->{'removeprefix'} = $removeprefix;
735 }
736 if (defined ($removesuffix) && $removesuffix) {
737 $removesuffix =~ s/\$$//; # don't need a trailing $
738 $self->{'removesuffix'} = $removesuffix;
739 }
740}
741
742sub open_xslt_pipe
743{
744 my $self = shift @_;
745 my ($output_file_name, $xslt_file)=@_;
746
747 return unless defined $xslt_file and $xslt_file ne "" and -e $xslt_file;
748
749 my $java_class_path = &util::filename_cat ($ENV{'GSDLHOME'},"bin","java");
750
751 my $mapping_file_path = "";
752
753 if ($ENV{'GSDLOS'} eq "windows"){
754 $java_class_path .=";".&util::filename_cat ($ENV{'GSDLHOME'},"bin","java","xalan.jar");
755 $xslt_file = "\"file:///".$xslt_file."\"";
756 $mapping_file_path = "\"file:///";
757 }
758 else{
759 $java_class_path .=":".&util::filename_cat ($ENV{'GSDLHOME'},"bin","java","xalan.jar");
760 }
761
762
763 $java_class_path = "\"".$java_class_path."\"";
764
765 my $cmd = "| java -cp $java_class_path org.nzdl.gsdl.ApplyXSLT -t $xslt_file ";
766
767 if (defined $self->{'mapping_file'} and $self->{'mapping_file'} ne ""){
768 my $mapping_file_path = "\"".$self->{'mapping_file'}."\"";
769 $cmd .= "-m $mapping_file_path";
770 }
771
772 open(*XMLWRITER, $cmd)
773 or die "can't open pipe to xslt: $!";
774
775
776 $self->{'xslt_writer'} = *XMLWRITER;
777
778 print XMLWRITER "<?DocStart?>\n";
779 print XMLWRITER "$output_file_name\n";
780
781
782 }
783
784
785sub close_xslt_pipe
786{
787 my $self = shift @_;
788
789
790 return unless defined $self->{'xslt_writer'} ;
791
792 my $xsltwriter = $self->{'xslt_writer'};
793
794 print $xsltwriter "<?DocEnd?>\n";
795 close($xsltwriter);
796
797 undef $self->{'xslt_writer'};
798
799}
800
801sub close_file_output
802{
803 my ($self) = @_;
804
805 # make sure that the handle has been opened - it won't be if we failed
806 # to import any documents...
807 if (defined(fileno(GROUPPROCESS))) {
808 $self->output_xml_footer('GROUPPROCESS','Archive');
809 close GROUPPROCESS;
810 }
811
812 my $OID = $self->{'gs_OID'};
813 my $short_doc_file = $self->{'short_doc_file'};
814
815 if ($self->{'gzip'}) {
816 my $doc_file = $self->{'gs_filename'};
817 `gzip $doc_file`;
818 $doc_file .= ".gz";
819 $short_doc_file .= ".gz";
820 if (!-e $doc_file) {
821 my $outhandle = $self->{'output_handle'};
822 print $outhandle "error while gzipping: $doc_file doesn't exist\n";
823 return 0;
824 }
825 }
826
827 # store reference in output_info
828 my $output_info = $self->{'output_info'};
829 return 0 if (!defined $output_info);
830 $output_info->add_info($OID, $short_doc_file, undef, undef);
831 return 1;
832}
833
834
835#the subclass should implement this method if is_group method could return 1.
836sub close_group_output{
837 my $self = shift (@_);
838}
839
840sub is_group {
841 my $self = shift (@_);
842 return 0;
843}
844
845my $dc_set = { Title => 1,
846 Creator => 1,
847 Subject => 1,
848 Description => 1,
849 Publisher => 1,
850 Contributor => 1,
851 Date => 1,
852 Type => 1,
853 Format => 1,
854 Identifier => 1,
855 Source => 1,
856 Language => 1,
857 Relation => 1,
858 Coverage => 1,
859 Rights => 1};
860
861
862# returns an XML representation of the dublin core metadata
863# if dc meta is not found, try ex mete
864sub get_dc_metadata {
865 my $self = shift(@_);
866 my ($doc_obj, $section, $version) = @_;
867
868 # build up string of dublin core metadata
869 $section="" unless defined $section;
870
871 my $section_ptr = $doc_obj->_lookup_section($section);
872 return "" unless defined $section_ptr;
873
874
875 my $explicit_dc = {};
876 my $explicit_ex = {};
877
878 my $all_text="";
879 foreach my $data (@{$section_ptr->{'metadata'}}){
880 my $escaped_value = &docprint::escape_text($data->[1]);
881 if ($data->[0]=~ m/^dc\./) {
882 $data->[0] =~ tr/[A-Z]/[a-z]/;
883
884 $data->[0] =~ m/^dc\.(.*)/;
885 my $dc_element = $1;
886
887 if (!defined $explicit_dc->{$dc_element}) {
888 $explicit_dc->{$dc_element} = [];
889 }
890 push(@{$explicit_dc->{$dc_element}},$escaped_value);
891
892 if (defined $version && ($version eq "oai_dc")) {
893 $all_text .= " <dc:$dc_element>$escaped_value</dc:$dc_element>\n";
894 }
895 else {
896 # qualifier???
897 $all_text .= ' <dcvalue element="'. $dc_element.'">'. $escaped_value. "</dcvalue>\n";
898 }
899
900 }
901 elsif (($data->[0] =~ m/^ex\./) || ($data->[0] !~ m/\./)) {
902 $data->[0] =~ m/^(ex\.)?(.*)/;
903 my $ex_element = $2;
904 my $lc_ex_element = lc($ex_element);
905
906 if (defined $dc_set->{$ex_element}) {
907 if (!defined $explicit_ex->{$lc_ex_element}) {
908 $explicit_ex->{$lc_ex_element} = [];
909 }
910 push(@{$explicit_ex->{$lc_ex_element}},$escaped_value);
911 }
912 }
913 }
914
915 # go through dc_set and for any element *not* defined in explicit_dc
916 # that does exist in explicit_ex, add it in as metadata
917 foreach my $k ( keys %$dc_set ) {
918 my $lc_k = lc($k);
919
920 if (!defined $explicit_dc->{$lc_k}) {
921 if (defined $explicit_ex->{$lc_k}) {
922
923 foreach my $v (@{$explicit_ex->{$lc_k}}) {
924 my $dc_element = $lc_k;
925 my $escaped_value = $v;
926
927 if (defined $version && ($version eq "oai_dc")) {
928 $all_text .= " <dc:$dc_element>$escaped_value</dc:$dc_element>\n";
929 }
930 else {
931 $all_text .= ' <dcvalue element="'. $dc_element.'">'. $escaped_value. "</dcvalue>\n";
932 }
933
934 }
935 }
936 }
937 }
938
939 if ($all_text eq "") {
940 $all_text .= " There is no Dublin Core metatdata in this document\n";
941 }
942 $all_text =~ s/[\x00-\x09\x0B\x0C\x0E-\x1F]//g;
943
944 return $all_text;
945}
946
947# Build up dublin_core metadata. Priority given to dc.* over ex.*
948# This method was apparently added by Jeffrey and committed by Shaoqun.
949# But we don't know why it was added, so not using it anymore.
950sub new_get_dc_metadata {
951
952 my $self = shift(@_);
953 my ($doc_obj, $section, $version) = @_;
954
955 # build up string of dublin core metadata
956 $section="" unless defined $section;
957
958 my $section_ptr=$doc_obj->_lookup_section($section);
959 return "" unless defined $section_ptr;
960
961 my $all_text = "";
962 foreach my $data (@{$section_ptr->{'metadata'}}){
963 my $escaped_value = &docprint::escape_text($data->[1]);
964 my $dc_element = $data->[0];
965
966 my @array = split('\.',$dc_element);
967 my ($type,$name);
968
969 if(defined $array[1])
970 {
971 $type = $array[0];
972 $name = $array[1];
973 }
974 else
975 {
976 $type = "ex";
977 $name = $array[0];
978 }
979
980 $all_text .= ' <Metadata Type="'. $type.'" Name="'.$name.'">'. $escaped_value. "</Metadata>\n";
981 }
982 return $all_text;
983}
984
985
9861;
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