4 ## marc2ris: converts MARC21 and UNIMARC datasets to RIS format
5 ## See comments below for compliance with other MARC dialects
7 ## usage: perl marc2ris < infile.marc > outfile.ris
9 ## Dependencies: perl 5.6.0 or later
13 ## markus@mhoenicka.de 2002-11-16
15 ## This program is free software; you can redistribute it and/or modify
16 ## it under the terms of the GNU General Public License as published by
17 ## the Free Software Foundation; either version 2 of the License, or
18 ## (at your option) any later version.
20 ## This program is distributed in the hope that it will be useful,
21 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
22 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 ## GNU General Public License for more details.
25 ## You should have received a copy of the GNU General Public License
26 ## along with this program; if not, write to the Free Software
27 ## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 ## Some background about MARC as understood by this script
30 ## The default input format used in this script is MARC21, which
31 ## superseded USMARC and CANMARC. The specification can be found at:
32 ## http://lcweb.loc.gov/marc/
33 ## UNIMARC follows the specification at:
34 ## http://www.ifla.org/VI/3/p1996-1/sec-uni.htm
35 ## UKMARC support is a bit shaky because there is no specification available
36 ## for free. The wisdom used in this script was taken from a PDF document
37 ## comparing UKMARC to MARC21 found at:
38 ## www.bl.uk/services/bibliographic/marcchange.pdf
41 # Modified 2008 by BibLibre for Koha
42 # Modified 2011 by Catalyst
43 # Modified 2011 by Equinox Software, Inc.
45 # This file is part of Koha.
47 # Koha is free software; you can redistribute it and/or modify it
48 # under the terms of the GNU General Public License as published by
49 # the Free Software Foundation; either version 3 of the License, or
50 # (at your option) any later version.
52 # Koha is distributed in the hope that it will be useful, but
53 # WITHOUT ANY WARRANTY; without even the implied warranty of
54 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
55 # GNU General Public License for more details.
57 # You should have received a copy of the GNU General Public License
58 # along with Koha; if not, see <http://www.gnu.org/licenses>.
64 use List::MoreUtils qw/uniq/;
65 use vars qw(@ISA @EXPORT);
67 use C4::Biblio qw(GetMarcSubfieldStructureFromKohaField);
68 use Koha::SimpleMARC qw(read_field);
73 # only export API methods
79 our $marcprint = 0; # Debug flag;
81 =head1 marc2bibtex - Convert from UNIMARC to RIS
83 my ($ris) = marc2ris($record);
87 C<$record> - a MARC::Record object
95 my $marcflavour = C4::Context->preference("marcflavour");
96 my $intype = lc($marcflavour);
98 # Let's redirect stdout
99 open my $oldout, ">&STDOUT";
102 open STDOUT,'>:encoding(utf8)', \$outvar;
104 ## First we should check the character encoding. This may be
105 ## MARC-8 or UTF-8. The former is indicated by a blank, the latter
106 ## by 'a' at position 09 (zero-based) of the leader
107 my $leader = $record->leader();
108 if ( $intype eq "marc21" ) {
109 if ( $leader =~ /^.{9}a/ ) {
110 print "<marc>---\r\n<marc>UTF-8 data\r\n" if $marcprint;
113 print "<marc>---\r\n<marc>MARC-8 data\r\n" if $marcprint;
116 ## else: other MARC formats do not specify the character encoding
117 ## we assume it's *not* UTF-8
119 my $RisExportAdditionalFields = C4::Context->preference('RisExportAdditionalFields');
120 my $ris_additional_fields;
121 if ($RisExportAdditionalFields) {
122 $RisExportAdditionalFields = "$RisExportAdditionalFields\n\n";
123 $ris_additional_fields = eval { YAML::Load($RisExportAdditionalFields); };
125 warn "Unable to parse RisExportAdditionalFields : $@";
126 $ris_additional_fields = undef;
131 if ( $ris_additional_fields && $ris_additional_fields->{TY} ) {
132 my ( $f, $sf ) = split( /\$/, $ris_additional_fields->{TY} );
133 my ( $type ) = read_field( { record => $record, field => $f, subfield => $sf, field_numbers => [1] } );
135 print "TY - $type\r\n";
138 &print_typetag($leader);
142 &print_typetag($leader);
145 ## retrieve all author fields and collect them in a list
148 if ($intype eq "unimarc") {
149 ## Fields 700, 701, and 702 can contain author names
150 @author_fields = ($record->field('700'), $record->field('701'), $record->field('702'));
152 else { ## marc21, ukmarc
153 ## Field 100 sometimes carries main author
154 ## Field(s) 700 carry added entries - personal names
155 @author_fields = ($record->field('100'), $record->field('700'));
158 ## loop over all author fields
159 foreach my $field (@author_fields) {
160 if (length($field)) {
161 my $author = &get_author($field);
162 print "AU - ",$author,"\r\n";
166 # ToDo: should we specify anonymous as author if we didn't find
167 # one? or use one of the corporate/meeting names below?
169 ## add corporate names or meeting names as editors ??
172 if ($intype eq "unimarc") {
173 ## Fields 710, 711, and 712 can carry corporate names
174 ## Field(s) 720, 721, 722, 730 have additional candidates
175 @editor_fields = ($record->field('710'), $record->field('711'), $record->field('712'), $record->field('720'), $record->field('721'), $record->field('722'), $record->field('730'));
177 else { ## marc21, ukmarc
178 ## Fields 110 and 111 carry the main entries - corporate name and
179 ## meeting name, respectively
180 ## Field(s) 710, 711 carry added entries - personal names
181 @editor_fields = ($record->field('110'), $record->field('111'), $record->field('710'), $record->field('711'));
184 ## loop over all editor fields
185 foreach my $field (@editor_fields) {
186 if (length($field)) {
187 my $editor = &get_editor($field);
188 print "ED - ",$editor,"\r\n";
192 ## get info from the title field
193 if ($intype eq "unimarc") {
194 &print_title($record->field('200'));
196 else { ## marc21, ukmarc
197 &print_title($record->field('245'));
201 if ($intype eq "unimarc") {
202 &print_stitle($record->field('225'));
204 else { ## marc21, ukmarc
205 &print_stitle($record->field('490'));
209 if ($intype eq "unimarc") {
210 &print_isbn($record->field('010'));
211 &print_issn($record->field('011'));
213 elsif ($intype eq "ukmarc") {
214 &print_isbn($record->field('021'));
215 ## this is just an assumption
216 &print_issn($record->field('022'));
218 else { ## assume marc21
219 &print_isbn($record->field('020'));
220 &print_issn($record->field('022'));
223 if ($intype eq "marc21") {
224 &print_loc_callno($record->field('050'));
225 &print_dewey($record->field('082'));
227 ## else: unimarc, ukmarc do not seem to store call numbers?
230 if ($intype eq "unimarc") {
231 &print_pubinfo($record->field('210'));
233 else { ## marc21, ukmarc
234 if ($record->field('264')) {
235 &print_pubinfo($record->field('264'));
238 &print_pubinfo($record->field('260'));
242 ## 6XX fields contain KW candidates. We add all of them to a
245 if ($intype eq "unimarc") {
246 @field_list = ('600', '601', '602', '604', '605', '606','607', '608', '610', '615', '620', '660', '661', '670', '675', '676', '680', '686');
247 } elsif ($intype eq "ukmarc") {
248 @field_list = ('600', '610', '611', '630', '650', '651','653', '655', '660', '661', '668', '690', '691', '692', '695');
249 } else { ## assume marc21
250 @field_list = ('600', '610', '611', '630', '650', '651','653', '654', '655', '656', '657', '658');
254 for my $f ( @field_list ) {
255 my @fields = $record->field($f);
256 push @kwpool, ( get_keywords("$f",$record->field($f)) );
260 @kwpool = uniq @kwpool;
262 for my $kw ( @kwpool ) {
263 print "KW - ", $kw, "\r\n";
266 ## 5XX have various candidates for notes and abstracts. We pool
267 ## all notes-like stuff in one list.
270 ## these fields have notes candidates
271 if ($intype eq "unimarc") {
272 foreach ('300', '301', '302', '303', '304', '305', '306', '307', '308', '310', '311', '312', '313', '314', '315', '316', '317', '318', '320', '321', '322', '323', '324', '325', '326', '327', '328', '332', '333', '336', '337', '345') {
273 &pool_subx(\@notepool, $_, $record->field($_));
276 elsif ($intype eq "ukmarc") {
277 foreach ('500', '501', '502', '503', '504', '505', '506', '508', '514', '515', '516', '521', '524', '525', '528', '530', '531', '532', '533', '534', '535', '537', '538', '540', '541', '542', '544', '554', '555', '556', '557', '561', '563', '580', '583', '584', '586') {
278 &pool_subx(\@notepool, $_, $record->field($_));
281 else { ## assume marc21
282 foreach ('500', '501', '502', '504', '505', '506', '507', '508', '510', '511', '513', '514', '515', '516', '518', '521', '522', '524', '525', '526', '530', '533', '534', '535') {
283 &pool_subx(\@notepool, $_, $record->field($_));
287 my $allnotes = join "; ", @notepool;
289 if (length($allnotes) > 0) {
290 print "N1 - ", $allnotes, "\r\n";
293 ## 320/520 have the abstract
294 if ($intype eq "unimarc") {
295 &print_abstract($record->field('320'));
297 elsif ($intype eq "ukmarc") {
298 &print_abstract($record->field('512'), $record->field('513'));
300 else { ## assume marc21
301 &print_abstract($record->field('520'));
305 if ($record->field('856')) {
306 print_uri($record->field('856'));
309 if ($ris_additional_fields) {
310 foreach my $ris_tag ( keys %$ris_additional_fields ) {
311 next if $ris_tag eq 'TY';
314 ref( $ris_additional_fields->{$ris_tag} ) eq 'ARRAY'
315 ? @{ $ris_additional_fields->{$ris_tag} }
316 : $ris_additional_fields->{$ris_tag};
318 for my $tag (@fields) {
319 my ( $f, $sf ) = split( /\$/, $tag );
320 my @values = read_field( { record => $record, field => $f, subfield => $sf } );
321 foreach my $v (@values) {
322 print "$ris_tag - $v\r\n";
331 # Let's re-redirect stdout
333 open STDOUT, ">&", $oldout;
340 ##********************************************************************
341 ## print_typetag(): prints the first line of a RIS dataset including
342 ## the preceding newline
343 ## Argument: the leader of a MARC dataset
344 ## Returns: the value at leader position 06
345 ##********************************************************************
348 ## the keys of typehash are the allowed values at position 06
349 ## of the leader of a MARC record, the values are the RIS types
350 ## that might appropriately represent these types.
384 ## The type of a MARC record is found at position 06 of the leader
385 my $typeofrecord = defined($leader) && length $leader >=6 ?
386 substr($leader, 6, 1): undef;
388 ## ToDo: for books, field 008 positions 24-27 might have a few more
392 my $marcflavour = C4::Context->preference("marcflavour");
393 my $intype = lc($marcflavour);
394 if ($intype eq "unimarc") {
395 %typehash = %unitypehash;
398 %typehash = %ustypehash;
401 if (!defined $typeofrecord || !exists $typehash{$typeofrecord}) {
402 print "TY - BOOK\r\n"; ## most reasonable default
403 warn ("no type found - assume BOOK") if $marcprint;
406 print "TY - $typehash{$typeofrecord}\r\n";
409 ## use $typeofrecord as the return value, just in case
413 ##********************************************************************
414 ## normalize_author(): normalizes an authorname
415 ## Arguments: authorname subfield a
416 ## authorname subfield b
417 ## authorname subfield c
418 ## name type if known: 0=direct order
419 ## 1=only surname or full name in
421 ## 3=family, clan, dynasty name
422 ## Returns: the normalized authorname
423 ##********************************************************************
424 sub normalize_author {
425 my($rawauthora, $rawauthorb, $rawauthorc, $nametype) = @_;
427 if ($nametype == 0) {
428 # ToDo: convert every input to Last[,(F.|First)[ (M.|Middle)[,Suffix]]]
429 warn("name >>$rawauthora<< in direct order - leave as is") if $marcprint;
432 elsif ($nametype == 1) {
433 ## start munging subfield a (the real name part)
434 ## remove spaces after separators
435 $rawauthora =~ s%([,.]+) *%$1%g;
437 ## remove trailing separators after spaces
438 $rawauthora =~ s% *[,;:/]*$%%;
440 ## remove periods after a non-abbreviated name
441 $rawauthora =~ s%(\w{2,})\.%$1%g;
443 ## start munging subfield b (something like the suffix)
444 ## remove trailing separators after spaces
445 $rawauthorb =~ s% *[,;:/]*$%%;
447 ## we currently ignore subfield c until someone complains
448 if (length($rawauthorb) > 0) {
449 return join ", ", ($rawauthora, $rawauthorb);
455 elsif ($nametype == 3) {
460 ##********************************************************************
461 ## get_author(): gets authorname info from MARC fields 100, 700
462 ## Argument: field (100 or 700)
463 ## Returns: an author string in the format found in the record
464 ##********************************************************************
466 my ($authorfield) = @_;
469 ## the sequence of the name parts is encoded either in indicator
470 ## 1 (marc21) or 2 (unimarc)
471 my $marcflavour = C4::Context->preference("marcflavour");
472 my $intype = lc($marcflavour);
473 if ($intype eq "unimarc") {
476 else { ## assume marc21
480 print "<marc>:Author(Ind$indicator): ", $authorfield->indicator("$indicator"),"\r\n" if $marcprint;
481 print "<marc>:Author(\$a): ", $authorfield->subfield('a'),"\r\n" if $marcprint;
482 print "<marc>:Author(\$b): ", $authorfield->subfield('b'),"\r\n" if $marcprint;
483 print "<marc>:Author(\$c): ", $authorfield->subfield('c'),"\r\n" if $marcprint;
484 print "<marc>:Author(\$h): ", $authorfield->subfield('h'),"\r\n" if $marcprint;
485 if ($intype eq "ukmarc") {
486 my $authorname = $authorfield->subfield('a') . "," . $authorfield->subfield('h');
487 normalize_author($authorname, $authorfield->subfield('b'), $authorfield->subfield('c'), $authorfield->indicator("$indicator"));
490 normalize_author($authorfield->subfield('a') // '', $authorfield->subfield('b') // '', $authorfield->subfield('c') // '', $authorfield->indicator("$indicator"));
494 ##********************************************************************
495 ## get_editor(): gets editor info from MARC fields 110, 111, 710, 711
496 ## Argument: field (110, 111, 710, or 711)
497 ## Returns: an author string in the format found in the record
498 ##********************************************************************
500 my ($editorfield) = @_;
506 print "<marc>Editor(\$a): ", $editorfield->subfield('a'),"\r\n" if $marcprint;
507 print "<marc>Editor(\$b): ", $editorfield->subfield('b'),"\r\n" if $marcprint;
508 print "<marc>editor(\$c): ", $editorfield->subfield('c'),"\r\n" if $marcprint;
509 return $editorfield->subfield('a');
513 ##********************************************************************
514 ## print_title(): gets info from MARC field 245
515 ## Arguments: field (245)
517 ##********************************************************************
519 my ($titlefield) = @_;
521 print "<marc>empty title field (245)\r\n" if $marcprint;
522 warn("empty title field (245)") if $marcprint;
525 print "<marc>Title(\$a): ",$titlefield->subfield('a'),"\r\n" if $marcprint;
526 print "<marc>Title(\$b): ",$titlefield->subfield('b'),"\r\n" if $marcprint;
527 print "<marc>Title(\$c): ",$titlefield->subfield('c'),"\r\n" if $marcprint;
529 ## The title is usually written in a very odd notation. The title
530 ## proper ($a) often ends with a space followed by a separator like
531 ## a slash or a colon. The subtitle ($b) doesn't start with a space
532 ## so simple concatenation looks odd. We have to conditionally remove
533 ## the separator and make sure there's a space between title and
536 my $clean_title = $titlefield->subfield('a');
538 my $clean_subtitle = $titlefield->subfield('b');
539 $clean_subtitle ||= q{};
540 $clean_title =~ s% *[/:;.]$%%;
541 $clean_subtitle =~ s%^ *(.*) *[/:;.]$%$1%;
543 my $marcflavour = C4::Context->preference("marcflavour");
544 my $intype = lc($marcflavour);
545 if (length($clean_title) > 0
546 || (length($clean_subtitle) > 0 && $intype ne "unimarc")) {
547 print "TI - ", $clean_title;
549 ## subfield $b is relevant only for marc21/ukmarc
550 if (length($clean_subtitle) > 0 && $intype ne "unimarc") {
551 print ": ",$clean_subtitle;
556 ## The statement of responsibility is just this: horrors. There is
557 ## no formal definition how authors, editors and the like should
558 ## be written and designated. The field is free-form and resistant
559 ## to all parsing efforts, so this information is lost on me
563 ##********************************************************************
564 ## print_stitle(): prints info from series title field
567 ##********************************************************************
569 my ($titlefield) = @_;
572 print "<marc>empty series title field\r\n" if $marcprint;
575 print "<marc>Series title(\$a): ",$titlefield->subfield('a'),"\r\n" if $marcprint;
576 my $clean_title = $titlefield->subfield('a');
578 $clean_title =~ s% *[/:;.]$%%;
580 if (length($clean_title) > 0) {
581 print "T2 - ", $clean_title,"\r\n";
584 my $marcflavour = C4::Context->preference("marcflavour");
585 my $intype = lc($marcflavour);
586 if ($intype eq "unimarc") {
587 print "<marc>Series vol(\$v): ",$titlefield->subfield('v'),"\r\n" if $marcprint;
588 if (length($titlefield->subfield('v')) > 0) {
589 print "VL - ", $titlefield->subfield('v'),"\r\n";
595 ##********************************************************************
596 ## print_isbn(): gets info from MARC field 020
597 ## Arguments: field (020)
598 ##********************************************************************
602 if (!$isbnfield || length ($isbnfield->subfield('a')) == 0) {
603 print "<marc>no isbn found (020\$a)\r\n" if $marcprint;
604 warn("no isbn found") if $marcprint;
607 if (length ($isbnfield->subfield('a')) < 10) {
608 print "<marc>truncated isbn (020\$a)\r\n" if $marcprint;
609 warn("truncated isbn") if $marcprint;
612 my $isbn = $isbnfield->subfield('a');
613 print "SN - ", $isbn, "\r\n";
617 ##********************************************************************
618 ## print_issn(): gets info from MARC field 022
619 ## Arguments: field (022)
620 ##********************************************************************
624 if (!$issnfield || length ($issnfield->subfield('a')) == 0) {
625 print "<marc>no issn found (022\$a)\r\n" if $marcprint;
626 warn("no issn found") if $marcprint;
629 if (length ($issnfield->subfield('a')) < 9) {
630 print "<marc>truncated issn (022\$a)\r\n" if $marcprint;
631 warn("truncated issn") if $marcprint;
634 my $issn = substr($issnfield->subfield('a'), 0, 9);
635 print "SN - ", $issn, "\r\n";
640 # print_uri() prints info from 856 u
645 foreach my $f856 (@f856s) {
646 if (my $uri = $f856->subfield('u')) {
647 print "UR - ", $uri, "\r\n";
652 ##********************************************************************
653 ## print_loc_callno(): gets info from MARC field 050
654 ## Arguments: field (050)
655 ##********************************************************************
656 sub print_loc_callno {
657 my($callnofield) = @_;
659 if (!$callnofield || length ($callnofield->subfield('a')) == 0) {
660 print "<marc>no LOC call number found (050\$a)\r\n" if $marcprint;
661 warn("no LOC call number found") if $marcprint;
664 print "AV - ", $callnofield->subfield('a'), " ", $callnofield->subfield('b'), "\r\n";
668 ##********************************************************************
669 ## print_dewey(): gets info from MARC field 082
670 ## Arguments: field (082)
671 ##********************************************************************
673 my($deweyfield) = @_;
675 if (!$deweyfield || length ($deweyfield->subfield('a')) == 0) {
676 print "<marc>no Dewey number found (082\$a)\r\n" if $marcprint;
677 warn("no Dewey number found") if $marcprint;
680 print "U1 - ", $deweyfield->subfield('a'), " ", $deweyfield->subfield('2'), "\r\n";
684 ##********************************************************************
685 ## print_pubinfo(): gets info from MARC field 260
686 ## Arguments: field (260)
687 ##********************************************************************
689 my($pubinfofield) = @_;
691 if (!$pubinfofield) {
692 print "<marc>no publication information found (260/264)\r\n" if $marcprint;
693 warn("no publication information found") if $marcprint;
696 ## the following information is available in MARC21:
698 ## $b publisher -> PB
700 ## the corresponding subfields for UNIMARC:
702 ## $c publisher -> PB
705 ## all of them are repeatable. We pool all places into a
706 ## comma-separated list in CY. We also pool all publishers
707 ## into a comma-separated list in PB. We break the rule with
708 ## the date field because this wouldn't make much sense. In
709 ## this case, we use the first occurrence for PY, the second
710 ## for Y2, and ignore the rest
712 my @pubsubfields = $pubinfofield->subfields();
718 my $pubsub_publisher;
721 my $marcflavour = C4::Context->preference("marcflavour");
722 my $intype = lc($marcflavour);
723 if ($intype eq "unimarc") {
725 $pubsub_publisher = "c";
728 else { ## assume marc21
730 $pubsub_publisher = "b";
734 ## loop over all subfield list entries
735 for my $tuple (@pubsubfields) {
736 ## each tuple consists of the subfield code and the value
737 if (@$tuple[0] eq $pubsub_place) {
738 ## strip any trailing crap
741 ## pool all occurrences in a list
744 elsif (@$tuple[0] eq $pubsub_publisher) {
745 ## strip any trailing crap
748 ## pool all occurrences in a list
749 push (@publishers, $_);
751 elsif (@$tuple[0] eq $pubsub_date) {
752 ## the dates are free-form, so we want to extract
753 ## a four-digit year and leave the rest as
755 my $protoyear = @$tuple[1];
756 print "<marc>Year (260\$c): $protoyear\r\n" if $marcprint;
758 ## strip any separator chars at the end
759 $protoyear =~ s% *[\.;:/]*$%%;
761 ## isolate a four-digit year. We discard anything
762 ## preceding the year, but keep everything after
763 ## the year as other info.
764 $protoyear =~ s%\D*([0-9\-]{4})(.*)%$1///$2%;
766 ## check what we've got. If there is no four-digit
767 ## year, make it up. If digits are replaced by '-',
768 ## replace those with 0s
770 if (index($protoyear, "/") == 4) {
772 ## replace all '-' in the four-digit year
774 substr($protoyear,0,4) =~ s!-!0!g;
778 print "<marc>no four-digit year found, use 0000\r\n" if $marcprint;
779 $protoyear = "0000///$protoyear";
780 warn("no four-digit year found, use 0000") if $marcprint;
783 if ($pycounter == 0 && length($protoyear)) {
784 print "PY - $protoyear\r\n";
786 elsif ($pycounter == 1 && length($_)) {
787 print "Y2 - $protoyear\r\n";
794 ## now dump the collected CY and PB lists
796 print "CY - ", join(", ", @cities), "\r\n";
798 if (@publishers > 0) {
799 print "PB - ", join(", ", @publishers), "\r\n";
804 ##********************************************************************
805 ## get_keywords(): prints info from MARC fields 6XX
806 ## Arguments: list of fields (6XX)
807 ##********************************************************************
809 my($fieldname, @keywords) = @_;
812 ## a list of all possible subfields
813 my @subfields = ('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'x', 'y', 'z', '2', '3', '4');
815 ## loop over all 6XX fields
816 foreach my $kwfield (@keywords) {
817 if ($kwfield != undef) {
818 ## authornames get special treatment
819 if ($fieldname eq "600") {
820 my $val = normalize_author($kwfield->subfield('a'), $kwfield->subfield('b'), $kwfield->subfield('c'), $kwfield->indicator('1'));
822 print "<marc>Field $kwfield subfield a:", $kwfield->subfield('a'), "\r\n<marc>Field $kwfield subfield b:", $kwfield->subfield('b'), "\r\n<marc>Field $kwfield subfield c:", $kwfield->subfield('c'), "\r\n" if $marcprint;
825 ## retrieve all available subfields
826 my @kwsubfields = $kwfield->subfields();
828 ## loop over all available subfield tuples
829 foreach my $kwtuple (@kwsubfields) {
830 ## loop over all subfields to check
831 foreach my $subfield (@subfields) {
832 ## [0] contains subfield code
833 if (@$kwtuple[0] eq $subfield) {
834 ## [1] contains value, remove trailing separators
835 @$kwtuple[1] =~ s% *[,;.:/]*$%%;
836 if (length(@$kwtuple[1]) > 0) {
837 push @kw, @$kwtuple[1];
838 print "<marc>Field $fieldname subfield $subfield:", @$kwtuple[1], "\r\n" if $marcprint;
840 ## we can leave the subfields loop here
851 ##********************************************************************
852 ## pool_subx(): adds contents of several subfields to a list
853 ## Arguments: reference to a list
855 ## list of fields (5XX)
856 ##********************************************************************
858 my($aref, $fieldname, @notefields) = @_;
860 ## we use a list that contains the interesting subfields
862 # ToDo: this is apparently correct only for marc21
865 if ($fieldname eq "500") {
868 elsif ($fieldname eq "501") {
871 elsif ($fieldname eq "502") {
874 elsif ($fieldname eq "504") {
875 @subfields = ('a', 'b');
877 elsif ($fieldname eq "505") {
878 @subfields = ('a', 'g', 'r', 't', 'u');
880 elsif ($fieldname eq "506") {
881 @subfields = ('a', 'b', 'c', 'd', 'e');
883 elsif ($fieldname eq "507") {
884 @subfields = ('a', 'b');
886 elsif ($fieldname eq "508") {
889 elsif ($fieldname eq "510") {
890 @subfields = ('a', 'b', 'c', 'x', '3');
892 elsif ($fieldname eq "511") {
895 elsif ($fieldname eq "513") {
896 @subfields = ('a', 'b');
898 elsif ($fieldname eq "514") {
899 @subfields = ('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'm', 'u', 'z');
901 elsif ($fieldname eq "515") {
904 elsif ($fieldname eq "516") {
907 elsif ($fieldname eq "518") {
908 @subfields = ('a', '3');
910 elsif ($fieldname eq "521") {
911 @subfields = ('a', 'b', '3');
913 elsif ($fieldname eq "522") {
916 elsif ($fieldname eq "524") {
917 @subfields = ('a', '2', '3');
919 elsif ($fieldname eq "525") {
922 elsif ($fieldname eq "526") {
923 @subfields = ('a', 'b', 'c', 'd', 'i', 'x', 'z', '5');
925 elsif ($fieldname eq "530") {
926 @subfields = ('a', 'b', 'c', 'd', 'u', '3');
928 elsif ($fieldname eq "533") {
929 @subfields = ('a', 'b', 'c', 'd', 'e', 'f', 'm', 'n', '3');
931 elsif ($fieldname eq "534") {
932 @subfields = ('a', 'b', 'c', 'e', 'f', 'k', 'l', 'm', 'n', 'p', 't', 'x', 'z');
934 elsif ($fieldname eq "535") {
935 @subfields = ('a', 'b', 'c', 'd', 'g', '3');
938 ## loop over all notefields
939 foreach my $notefield (@notefields) {
940 if (defined $notefield) {
941 ## retrieve all available subfield tuples
942 my @notesubfields = $notefield->subfields();
944 ## loop over all subfield tuples
945 foreach my $notetuple (@notesubfields) {
946 ## loop over all subfields to check
947 foreach my $subfield (@subfields) {
948 ## [0] contains subfield code
949 if (@$notetuple[0] eq $subfield) {
950 ## [1] contains value, remove trailing separators
951 print "<marc>field $fieldname subfield $subfield: ", @$notetuple[1], "\r\n" if $marcprint;
952 @$notetuple[1] =~ s% *[,;.:/]*$%%;
953 if (length(@$notetuple[1]) > 0) {
955 push @{$aref}, @$notetuple[1];
965 ##********************************************************************
966 ## print_abstract(): prints abstract fields
967 ## Arguments: list of fields (520)
968 ##********************************************************************
970 # ToDo: take care of repeatable subfields
973 ## we check the following subfields
974 my @subfields = ('a', 'b');
976 ## we generate a list for all useful strings
979 ## loop over all abfields
980 foreach my $abfield (@abfields) {
981 foreach my $field (@subfields) {
982 if ( length( $abfield->subfield($field) ) > 0 ) {
983 my $ab = $abfield->subfield($field);
985 print "<marc>field 520 subfield $field: $ab\r\n" if $marcprint;
987 ## strip trailing separators
988 $ab =~ s% *[;,:./]*$%%;
990 ## add string to the list
991 push( @abstrings, $ab );
996 my $allabs = join "; ", @abstrings;
998 if (length($allabs) > 0) {
999 print "N2 - ", $allabs, "\r\n";