root/gsdl/trunk/perllib/plugouts/BasePlugout.pm @ 17200

Revision 17200, 25.8 KB (checked in by kjdon, 11 years ago)

renamed BasPlugout? to BasePlugout?

  • Property svn:keywords set to Author Date Id Revision
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1###########################################################################
2#
3# BasPlugout.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 BasPlugout;
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'     => "BasPlugout",
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    if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
101    if(defined $options) { push(@{$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,$strError) = @_;
276    {
277    print "Error occoured in BasPlugout.pm\n".
278        "In Function: ".$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 "BasPlugout::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('BasPlugout::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 && $doc_dir_num < 2)));
567   
568   return "$doc_dir.dir";
569}
570
571sub process_assoc_files {
572    my $self = shift (@_);
573    my ($doc_obj, $doc_dir, $handle) = @_;
574
575    my $outhandle = $self->{'output_handle'};
576   
577    my $output_dir = $self->get_output_dir();
578    return if (!defined $output_dir);
579
580    &util::mk_all_dir ($output_dir) unless -e $output_dir;
581     
582    my $working_dir = &util::filename_cat($output_dir, $doc_dir);
583    &util::mk_all_dir ($working_dir) unless -e $working_dir;
584
585    my @assoc_files = ();
586    my $filename;;
587
588    my $source_filename = $doc_obj->get_source_filename();
589
590    my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
591
592    if (defined $collect_dir) {
593    my $dirsep_regexp = &util::get_os_dirsep();
594
595    if ($collect_dir !~ /$dirsep_regexp$/) {
596        $collect_dir .= &util::get_dirsep(); # ensure there is a slash at the end
597    }
598
599    # This test is never going to fail on Windows -- is this a problem?
600     
601    if ($source_filename !~ /^$dirsep_regexp/) {
602        $source_filename = &util::filename_cat($collect_dir, $source_filename);
603    }
604    }
605
606
607    # set the assocfile path (even if we have no assoc files - need this for lucene)
608    $doc_obj->set_utf8_metadata_element ($doc_obj->get_top_section(),
609                     "assocfilepath",
610                     "$doc_dir");
611    foreach my $assoc_file_rec (@{$doc_obj->get_assoc_files()}) {
612    my ($dir, $afile) = $assoc_file_rec->[1] =~ /^(.*?)([^\/\\]+)$/;
613    $dir = "" unless defined $dir;
614       
615   
616    my $real_filename = $assoc_file_rec->[0];
617    # for some reasons the image associate file has / before the full path
618    $real_filename =~ s/^\\(.*)/$1/i;
619    if (-e $real_filename) {
620
621        $filename = &util::filename_cat($working_dir, $afile);
622
623        &util::hard_link ($real_filename, $filename);
624       
625        $doc_obj->add_utf8_metadata ($doc_obj->get_top_section(),
626                     "gsdlassocfile",
627                     "$afile:$assoc_file_rec->[2]:$dir");
628    } elsif ($self->{'verbosity'} > 2) {
629        print $outhandle "BasPlugout::process couldn't copy the associated file " .
630        "$real_filename to $afile\n";
631    }
632    }
633}
634
635
636sub archiveinf_gdbm
637{
638    my $self = shift (@_);
639    my ($doc_obj) = @_;
640
641    my $verbosity = $self->{'verbosity'};
642
643    my $collect_dir = $ENV{'GSDLCOLLECTDIR'};
644    if (defined $collect_dir) {
645    my $dirsep_regexp = &util::get_os_dirsep();
646
647    if ($collect_dir !~ /$dirsep_regexp$/) {
648        # ensure there is a slash at the end
649        $collect_dir .= &util::get_dirsep();
650    }
651    }
652
653    my $oid = $doc_obj->get_OID();
654    my $source_filename = $doc_obj->get_source_filename();
655
656    my $oid_files = { 'src-file' => $source_filename,
657              'assoc-files' => [] };
658   
659    my @reverse_lookups = ($source_filename);
660
661    foreach my $assoc_file_rec (@{$doc_obj->get_assoc_files()}) {
662    my $real_filename = $assoc_file_rec->[0];
663    my $full_afile = $assoc_file_rec->[1];
664
665    # for some reasons the image associate file has / before the full path
666    $real_filename =~ s/^\\(.*)/$1/i;
667    if (-e $real_filename) {
668
669        if (defined $collect_dir) {
670        my $collect_dir_re_safe = $collect_dir;
671        $collect_dir_re_safe =~ s/\\/\\\\/g;
672        $collect_dir_re_safe =~ s/\./\\./g;
673
674        $real_filename =~ s/^$collect_dir_re_safe//;
675        }
676
677        push(@reverse_lookups,$real_filename);
678
679        push(@{$oid_files->{'assoc-files'}},$full_afile);
680
681    }
682    else {
683        print STDERR "Warning: archiveinf_gdbm()\n  $real_filename does not appear to be on the file system\n";
684    }
685    }
686
687    # better not to commit to a particular db implementation, but
688    # for simplicity, will use GDBM for now.
689
690    my $output_dir = $self->{'output_dir'};
691    my $db_ext = &util::is_little_endian() ? ".ldb" : ".bdb";
692
693    my $doc_db = &util::filename_cat($output_dir,"archiveinf-doc$db_ext");
694    my $src_db = &util::filename_cat($output_dir,"archiveinf-src$db_ext");
695
696    my $doc_db_text = "";
697    $doc_db_text .= "<src-file>$oid_files->{'src-file'}\n";
698    foreach my $af (@{$oid_files->{'assoc-files'}}) {
699    $doc_db_text .= "<assoc-file>$af\n";
700    }
701    chomp($doc_db_text); # remove trailing \n
702
703    &GDBMUtils::gdbmDatabaseSet($doc_db,$oid,$doc_db_text);
704
705    foreach my $rl (@reverse_lookups) {
706    &GDBMUtils::gdbmDatabaseAppend($src_db,$rl,"<oid>$oid\n");
707    }
708   
709}
710
711
712sub set_sortmeta {
713    my $self = shift (@_);
714    my ($sortmeta, $removeprefix, $removesuffix) = @_;
715   
716    $self->{'sortmeta'} = $sortmeta;
717    if (defined ($removeprefix) && $removeprefix ) {
718    $removeprefix =~ s/^\^//; # don't need a leading ^
719    $self->{'removeprefix'} = $removeprefix;
720    }
721    if (defined ($removesuffix) && $removesuffix) {
722    $removesuffix =~ s/\$$//; # don't need a trailing $
723    $self->{'removesuffix'} = $removesuffix;
724    }
725}
726
727sub open_xslt_pipe
728{
729    my $self = shift @_;
730    my ($output_file_name, $xslt_file)=@_;
731
732   return unless defined $xslt_file and $xslt_file ne "" and -e $xslt_file;
733
734    my $java_class_path =  &util::filename_cat ($ENV{'GSDLHOME'},"bin","java");
735
736    my $mapping_file_path = "";
737
738    if ($ENV{'GSDLOS'} eq "windows"){
739    $java_class_path .=";".&util::filename_cat ($ENV{'GSDLHOME'},"bin","java","xalan.jar");
740    $xslt_file = "\"file:///".$xslt_file."\"";
741    $mapping_file_path = "\"file:///";
742    }
743    else{
744    $java_class_path .=":".&util::filename_cat ($ENV{'GSDLHOME'},"bin","java","xalan.jar");
745    }
746
747
748    $java_class_path = "\"".$java_class_path."\"";
749
750    my $cmd = "| java -cp $java_class_path org.nzdl.gsdl.ApplyXSLT -t $xslt_file ";
751
752    if (defined $self->{'mapping_file'} and $self->{'mapping_file'} ne ""){
753    my $mapping_file_path = "\"".$self->{'mapping_file'}."\"";
754    $cmd .= "-m $mapping_file_path";
755    }
756
757    open(*XMLWRITER, $cmd)
758    or die "can't open pipe to xslt: $!";
759
760   
761    $self->{'xslt_writer'} = *XMLWRITER;
762
763    print XMLWRITER "<?DocStart?>\n";       
764    print XMLWRITER "$output_file_name\n";
765
766 
767  }
768 
769
770sub close_xslt_pipe
771{
772  my $self = shift @_;
773
774 
775  return unless defined $self->{'xslt_writer'} ;
776   
777  my $xsltwriter = $self->{'xslt_writer'};
778 
779  print $xsltwriter "<?DocEnd?>\n";
780  close($xsltwriter);
781
782  undef $self->{'xslt_writer'};
783
784}
785
786sub close_file_output
787{
788    my ($self) = @_;
789 
790    # make sure that the handle has been opened - it won't be if we failed
791    # to import any documents...
792    if (defined(fileno(GROUPPROCESS))) {
793    $self->output_xml_footer('GROUPPROCESS','Archive');   
794    close GROUPPROCESS;
795    }
796
797    my $OID = $self->{'gs_OID'};
798    my $short_doc_file = $self->{'short_doc_file'};
799   
800    if ($self->{'gzip'}) {
801    my $doc_file = $self->{'gs_filename'};
802    `gzip $doc_file`;
803    $doc_file .= ".gz";
804    $short_doc_file .= ".gz";
805    if (!-e $doc_file) {
806         my $outhandle = $self->{'output_handle'};
807        print $outhandle "error while gzipping: $doc_file doesn't exist\n";
808        return 0;
809    }
810    }
811
812    # store reference in output_info
813    my $output_info = $self->{'output_info'};
814    return 0 if (!defined $output_info);
815    $output_info->add_info($OID, $short_doc_file, undef, undef);
816    return 1;
817}
818
819
820#the subclass should implement this method if is_group method could return 1.
821sub close_group_output{
822   my $self = shift (@_);       
823}
824
825sub is_group {
826    my $self = shift (@_);
827    return 0;       
828}
829
830my $dc_set = { Title => 1,       
831           Creator => 1,
832           Subject => 1,
833           Description => 1,
834           Publisher => 1,
835           Contributor => 1,
836           Date => 1,
837           Type => 1,
838           Format => 1,
839           Identifier => 1,
840           Source => 1,
841           Language => 1,
842           Relation => 1,
843           Coverage => 1,
844           Rights => 1};
845
846
847# returns an XML representation of the dublin core metadata
848# if dc meta is not found, try ex mete
849sub get_dc_metadata {
850    my $self = shift(@_);
851    my ($doc_obj, $section, $version) = @_;
852   
853    # build up string of dublin core metadata
854    $section="" unless defined $section;
855   
856    my $section_ptr = $doc_obj->_lookup_section($section);
857    return "" unless defined $section_ptr;
858
859
860    my $explicit_dc = {};
861    my $explicit_ex = {};
862
863    my $all_text="";
864    foreach my $data (@{$section_ptr->{'metadata'}}){
865    my $escaped_value = &docprint::escape_text($data->[1]);
866    if ($data->[0]=~ m/^dc\./) {
867        $data->[0] =~ tr/[A-Z]/[a-z]/;
868
869        $data->[0] =~ m/^dc\.(.*)/;
870        my $dc_element =  $1;
871
872        if (!defined $explicit_dc->{$dc_element}) {
873        $explicit_dc->{$dc_element} = [];
874        }
875        push(@{$explicit_dc->{$dc_element}},$escaped_value);
876
877        if (defined $version && ($version eq "oai_dc")) {
878        $all_text .= "   <dc:$dc_element>$escaped_value</dc:$dc_element>\n";
879        }
880        else {
881        # qualifier???
882        $all_text .= '   <dcvalue element="'. $dc_element.'">'. $escaped_value. "</dcvalue>\n";
883        }
884
885    }
886    elsif (($data->[0] =~ m/^ex\./) || ($data->[0] !~ m/\./)) {
887        $data->[0] =~ m/^(ex\.)?(.*)/;
888        my $ex_element =  $2;
889        my $lc_ex_element = lc($ex_element);
890
891        if (defined $dc_set->{$ex_element}) {
892        if (!defined $explicit_ex->{$lc_ex_element}) {
893            $explicit_ex->{$lc_ex_element} = [];
894        }
895        push(@{$explicit_ex->{$lc_ex_element}},$escaped_value);
896        }
897    }
898    }
899
900    # go through dc_set and for any element *not* defined in explicit_dc
901    # that does exist in explicit_ex, add it in as metadata
902    foreach my $k ( keys %$dc_set ) {
903    my $lc_k = lc($k);
904
905    if (!defined $explicit_dc->{$lc_k}) {
906        if (defined $explicit_ex->{$lc_k}) {
907
908        foreach my $v (@{$explicit_ex->{$lc_k}}) {
909            my $dc_element    = $lc_k;
910            my $escaped_value = $v;
911
912            if (defined $version && ($version eq "oai_dc")) {
913            $all_text .= "   <dc:$dc_element>$escaped_value</dc:$dc_element>\n";
914            }
915            else {
916            $all_text .= '   <dcvalue element="'. $dc_element.'">'. $escaped_value. "</dcvalue>\n";
917            }
918           
919        }
920        }
921    }
922    }
923
924    if ($all_text eq "") {
925    $all_text .= "   There is no Dublin Core metatdata in this document\n";
926    }   
927    $all_text =~ s/[\x00-\x09\x0B\x0C\x0E-\x1F]//g;
928
929    return $all_text;
930}
931
932# Build up dublin_core metadata.  Priority given to dc.* over ex.*
933# This method was apparently added by Jeffrey and committed by Shaoqun.
934# But we don't know why it was added, so not using it anymore.
935sub new_get_dc_metadata {
936   
937    my $self = shift(@_);
938    my ($doc_obj, $section, $version) = @_;
939
940    # build up string of dublin core metadata
941    $section="" unless defined $section;
942   
943    my $section_ptr=$doc_obj->_lookup_section($section);
944    return "" unless defined $section_ptr;
945
946    my $all_text = "";
947    foreach my $data (@{$section_ptr->{'metadata'}}){
948    my $escaped_value = &docprint::escape_text($data->[1]);
949    my $dc_element =  $data->[0];
950   
951    my @array = split('\.',$dc_element);
952    my ($type,$name);
953
954    if(defined $array[1])
955    {
956        $type = $array[0];
957        $name = $array[1];
958    }
959    else
960    {
961        $type = "ex";
962        $name = $array[0];
963    }
964   
965    $all_text .= '   <Metadata Type="'. $type.'" Name="'.$name.'">'. $escaped_value. "</Metadata>\n";
966    }
967    return $all_text;
968}
969
970
9711;
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