C4/Record.pm

   1 package C4::Record;
   2 #
   3 # Copyright 2006 (C) LibLime
   4 # Joshua Ferraro <jmf@liblime.com>
   5 #
   6 # This file is part of Koha.
   7 #
   8 # Koha is free software; you can redistribute it and/or modify it under the
   9 # terms of the GNU General Public License as published by the Free Software
  10 # Foundation; either version 2 of the License, or (at your option) any later
  11 # version.
  12 #
  13 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  14 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  15 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License along with
  18 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  19 # Suite 330, Boston, MA  02111-1307 USA
  20 #
  21 #
  22 use strict;# use warnings; #FIXME: turn off warnings before release
  23
  24 # please specify in which methods a given module is used
  25 use MARC::Record; # marc2marcxml, marcxml2marc, html2marc, changeEncoding
  26 use MARC::File::XML; # marc2marcxml, marcxml2marc, html2marcxml, changeEncoding
  27 use MARC::Crosswalk::DublinCore; # marc2dcxml
  28 use Biblio::EndnoteStyle;
  29 use Unicode::Normalize; # _entity_encode
  30 use XML::LibXSLT;
  31 use XML::LibXML;
  32 use C4::Biblio; #marc2bibtex
  33 use C4::Csv; #marc2csv
  34 use C4::Koha; #marc2csv
  35 use Text::CSV::Encoded; #marc2csv
  36
  37 use vars qw($VERSION @ISA @EXPORT);
  38
  39 # set the version for version checking
  40 $VERSION = 3.00;
  41
  42 @ISA = qw(Exporter);
  43
  44 # only export API methods
  45
  46 @EXPORT = qw(
  47   &marc2endnote
  48   &marc2marc
  49   &marc2marcxml
  50   &marcxml2marc
  51   &marc2dcxml
  52   &marc2modsxml
  53   &marc2bibtex
  54   &marc2csv
  55
  56   &html2marcxml
  57   &html2marc
  58   &changeEncoding
  59 );
  60
  61 =head1 NAME
  62
  63 C4::Record - MARC, MARCXML, DC, MODS, XML, etc. Record Management Functions and API
  64
  65 =head1 SYNOPSIS
  66
  67 New in Koha 3.x. This module handles all record-related management functions.
  68
  69 =head1 API (EXPORTED FUNCTIONS)
  70
  71 =head2 marc2marc - Convert from one flavour of ISO-2709 to another
  72
  73 =over 4
  74
  75 my ($error,$newmarc) = marc2marc($marc,$to_flavour,$from_flavour,$encoding);
  76
  77 Returns an ISO-2709 scalar
  78
  79 =back
  80
  81 =cut
  82
  83 sub marc2marc {
  84         my ($marc,$to_flavour,$from_flavour,$encoding) = @_;
  85         my $error = "Feature not yet implemented\n";
  86         return ($error,$marc);
  87 }
  88
  89 =head2 marc2marcxml - Convert from ISO-2709 to MARCXML
  90
  91 =over 4
  92
  93 my ($error,$marcxml) = marc2marcxml($marc,$encoding,$flavour);
  94
  95 Returns a MARCXML scalar
  96
  97 =over 2
  98
  99 C<$marc> - an ISO-2709 scalar or MARC::Record object
 100
 101 C<$encoding> - UTF-8 or MARC-8 [UTF-8]
 102
 103 C<$flavour> - MARC21 or UNIMARC
 104
 105 C<$dont_entity_encode> - a flag that instructs marc2marcxml not to entity encode the xml before returning (optional)
 106
 107 =back
 108
 109 =back
 110
 111 =cut
 112
 113 sub marc2marcxml {
 114         my ($marc,$encoding,$flavour,$dont_entity_encode) = @_;
 115         my $error; # the error string
 116         my $marcxml; # the final MARCXML scalar
 117
 118         # test if it's already a MARC::Record object, if not, make it one
 119         my $marc_record_obj;
 120         if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
 121                 $marc_record_obj = $marc;
 122         } else { # it's not a MARC::Record object, make it one
 123                 eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
 124
 125                 # conversion to MARC::Record object failed, populate $error
 126                 if ($@) { $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR };
 127         }
 128         # only proceed if no errors so far
 129         unless ($error) {
 130
 131                 # check the record for warnings
 132                 my @warnings = $marc_record_obj->warnings();
 133                 if (@warnings) {
 134                         warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
 135                         foreach my $warn (@warnings) { warn "\t".$warn };
 136                 }
 137                 unless($encoding) {$encoding = "UTF-8"}; # set default encoding
 138                 unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set default MARC flavour
 139
 140                 # attempt to convert the record to MARCXML
 141                 eval { $marcxml = $marc_record_obj->as_xml_record($flavour) }; #handle exceptions
 142
 143                 # record creation failed, populate $error
 144                 if ($@) {
 145                         $error .= "Creation of MARCXML failed:".$MARC::File::ERROR;
 146                         $error .= "Additional information:\n";
 147                         my @warnings = $@->warnings();
 148                         foreach my $warn (@warnings) { $error.=$warn."\n" };
 149
 150                 # record creation was successful
 151         } else {
 152
 153                         # check the record for warning flags again (warnings() will be cleared already if there was an error, see above block
 154                         @warnings = $marc_record_obj->warnings();
 155                         if (@warnings) {
 156                                 warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
 157                                 foreach my $warn (@warnings) { warn "\t".$warn };
 158                         }
 159                 }
 160
 161                 # only proceed if no errors so far
 162                 unless ($error) {
 163
 164                         # entity encode the XML unless instructed not to
 165                 unless ($dont_entity_encode) {
 166                         my ($marcxml_entity_encoded) = _entity_encode($marcxml);
 167                         $marcxml = $marcxml_entity_encoded;
 168                 }
 169                 }
 170         }
 171         # return result to calling program
 172         return ($error,$marcxml);
 173 }
 174
 175 =head2 marcxml2marc - Convert from MARCXML to ISO-2709
 176
 177 =over 4
 178
 179 my ($error,$marc) = marcxml2marc($marcxml,$encoding,$flavour);
 180
 181 Returns an ISO-2709 scalar
 182
 183 =over 2
 184
 185 C<$marcxml> - a MARCXML record
 186
 187 C<$encoding> - UTF-8 or MARC-8 [UTF-8]
 188
 189 C<$flavour> - MARC21 or UNIMARC
 190
 191 =back
 192
 193 =back
 194
 195 =cut
 196
 197 sub marcxml2marc {
 198     my ($marcxml,$encoding,$flavour) = @_;
 199         my $error; # the error string
 200         my $marc; # the final ISO-2709 scalar
 201         unless($encoding) {$encoding = "UTF-8"}; # set the default encoding
 202         unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set the default MARC flavour
 203
 204         # attempt to do the conversion
 205         eval { $marc = MARC::Record->new_from_xml($marcxml,$encoding,$flavour) }; # handle exceptions
 206
 207         # record creation failed, populate $error
 208         if ($@) {$error .="\nCreation of MARCXML Record failed: ".$@;
 209                 $error.=$MARC::File::ERROR if ($MARC::File::ERROR);
 210                 };
 211         # return result to calling program
 212         return ($error,$marc);
 213 }
 214
 215 =head2 marc2dcxml - Convert from ISO-2709 to Dublin Core
 216
 217 =over 4
 218
 219 my ($error,$dcxml) = marc2dcxml($marc,$qualified);
 220
 221 Returns a DublinCore::Record object, will eventually return a Dublin Core scalar
 222
 223 FIXME: should return actual XML, not just an object
 224
 225 =over 2
 226
 227 C<$marc> - an ISO-2709 scalar or MARC::Record object
 228
 229 C<$qualified> - specify whether qualified Dublin Core should be used in the input or output [0]
 230
 231 =back
 232
 233 =back
 234
 235 =cut
 236
 237 sub marc2dcxml {
 238         my ($marc,$qualified) = @_;
 239         my $error;
 240     # test if it's already a MARC::Record object, if not, make it one
 241     my $marc_record_obj;
 242     if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
 243         $marc_record_obj = $marc;
 244     } else { # it's not a MARC::Record object, make it one
 245                 eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
 246
 247                 # conversion to MARC::Record object failed, populate $error
 248                 if ($@) {
 249                         $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR;
 250                 }
 251         }
 252         my $crosswalk = MARC::Crosswalk::DublinCore->new;
 253         if ($qualified) {
 254                 $crosswalk = MARC::Crosswalk::DublinCore->new( qualified => 1 );
 255         }
 256         my $dcxml = $crosswalk->as_dublincore($marc_record_obj);
 257         my $dcxmlfinal = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
 258         $dcxmlfinal .= "<metadata
 259   xmlns=\"http://example.org/myapp/\"
 260   xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
 261   xsi:schemaLocation=\"http://example.org/myapp/ http://example.org/myapp/schema.xsd\"
 262   xmlns:dc=\"http://purl.org/dc/elements/1.1/\"
 263   xmlns:dcterms=\"http://purl.org/dc/terms/\">";
 264
 265         foreach my $element ( $dcxml->elements() ) {
 266                 $dcxmlfinal.="<"."dc:".$element->name().">".$element->content()."</"."dc:".$element->name().">\n";
 267     }
 268         $dcxmlfinal .= "\n</metadata>";
 269         return ($error,$dcxmlfinal);
 270 }
 271 =head2 marc2modsxml - Convert from ISO-2709 to MODS
 272
 273 =over 4
 274
 275 my ($error,$modsxml) = marc2modsxml($marc);
 276
 277 Returns a MODS scalar
 278
 279 =back
 280
 281 =cut
 282
 283 sub marc2modsxml {
 284         my ($marc) = @_;
 285         # grab the XML, run it through our stylesheet, push it out to the browser
 286         my $xmlrecord = marc2marcxml($marc);
 287         my $xslfile = C4::Context->config('intrahtdocs')."/prog/en/xslt/MARC21slim2MODS3-1.xsl";
 288         my $parser = XML::LibXML->new();
 289         my $xslt = XML::LibXSLT->new();
 290         my $source = $parser->parse_string($xmlrecord);
 291         my $style_doc = $parser->parse_file($xslfile);
 292         my $stylesheet = $xslt->parse_stylesheet($style_doc);
 293         my $results = $stylesheet->transform($source);
 294         my $newxmlrecord = $stylesheet->output_string($results);
 295         return ($newxmlrecord);
 296 }
 297
 298 sub marc2endnote {
 299     my ($marc) = @_;
 300         my $marc_rec_obj =  MARC::Record->new_from_usmarc($marc);
 301         my $f260 = $marc_rec_obj->field('260');
 302         my $f260a = $f260->subfield('a') if $f260;
 303     my $f710 = $marc_rec_obj->field('710');
 304     my $f710a = $f710->subfield('a') if $f710;
 305         my $f500 = $marc_rec_obj->field('500');
 306         my $abstract = $f500->subfield('a') if $f500;
 307         my $fields = {
 308                 DB => C4::Context->preference("LibraryName"),
 309                 Title => $marc_rec_obj->title(),
 310                 Author => $marc_rec_obj->author(),
 311                 Publisher => $f710a,
 312                 City => $f260a,
 313                 Year => $marc_rec_obj->publication_date,
 314                 Abstract => $abstract,
 315         };
 316         my $endnote;
 317         my $style = new Biblio::EndnoteStyle();
 318         my $template;
 319         $template.= "DB - DB\n" if C4::Context->preference("LibraryName");
 320         $template.="T1 - Title\n" if $marc_rec_obj->title();
 321         $template.="A1 - Author\n" if $marc_rec_obj->author();
 322         $template.="PB - Publisher\n" if  $f710a;
 323         $template.="CY - City\n" if $f260a;
 324         $template.="Y1 - Year\n" if $marc_rec_obj->publication_date;
 325         $template.="AB - Abstract\n" if $abstract;
 326         my ($text, $errmsg) = $style->format($template, $fields);
 327         return ($text);
 328
 329 }
 330
 331 =head2 marc2csv - Convert from UNIMARC to CSV
 332
 333 =over 4
 334
 335 my ($csv) = marc2csv($record, $csvprofileid, $header);
 336
 337 Returns a CSV scalar
 338
 339 =over 2
 340
 341 C<$biblio> - a biblionumber
 342
 343 C<$csvprofileid> - the id of the CSV profile to use for the export (see export_format.export_format_id and the GetCsvProfiles function in C4::Csv)
 344
 345 C<$header> - true if the headers are to be printed (typically at first pass)
 346
 347 =back
 348
 349 =back
 350
 351 =cut
 352
 353
 354 sub marc2csv {
 355     my ($biblio, $id, $header) = @_;
 356     my $output;
 357
 358     # Getting the record
 359     my $record = GetMarcBiblio($biblio);
 360
 361     # Getting the framework
 362     my $frameworkcode = GetFrameworkCode($biblio);
 363
 364     # Getting information about the csv profile
 365     my $profile = GetCsvProfile($id);
 366
 367     # Getting output encoding
 368     my $encoding          = $profile->{encoding} || 'utf8';
 369
 370     # Getting separators
 371     my $csvseparator      = $profile->{csv_separator}      || ',';
 372     my $fieldseparator    = $profile->{field_separator}    || '#';
 373     my $subfieldseparator = $profile->{subfield_separator} || '|';
 374
 375     # TODO: Be more generic (in case we have to handle other protected chars or more separators)
 376     if ($csvseparator eq '\t') { $csvseparator = "\t" }
 377     if ($fieldseparator eq '\t') { $fieldseparator = "\t" }
 378     if ($subfieldseparator eq '\t') { $subfieldseparator = "\t" }
 379
 380     # Init CSV
 381     my $csv = Text::CSV::Encoded->new({ sep_char => $csvseparator });
 382     $csv = $csv->encoding_out($encoding) if ($encoding ne 'utf8');
 383
 384     # Getting the marcfields
 385     my $marcfieldslist = $profile->{marcfields};
 386
 387     # Getting the marcfields as an array
 388     my @marcfieldsarray = split('\|', $marcfieldslist);
 389
 390    # Separating the marcfields from the the user-supplied headers
 391     my @marcfields;
 392     foreach (@marcfieldsarray) {
 393         my @result = split('=', $_);
 394         if (scalar(@result) == 2) {
 395            push @marcfields, { header => $result[0], field => $result[1] };
 396         } else {
 397            push @marcfields, { field => $result[0] }
 398         }
 399     }
 400
 401     # If we have to insert the headers
 402     if ($header) {
 403         my @marcfieldsheaders;
 404         my $dbh   = C4::Context->dbh;
 405
 406         # For each field or subfield
 407         foreach (@marcfields) {
 408
 409             my $field = $_->{field};
 410
 411             # If we have a user-supplied header, we use it
 412             if (exists $_->{header}) {
 413                     push @marcfieldsheaders, $_->{header};
 414             } else {
 415                 # If not, we get the matching tag name from koha
 416                 if (index($field, '$') > 0) {
 417                     my ($fieldtag, $subfieldtag) = split('\$', $field);
 418                     my $query = "SELECT liblibrarian FROM marc_subfield_structure WHERE tagfield=? AND tagsubfield=?";
 419                     my $sth = $dbh->prepare($query);
 420                     $sth->execute($fieldtag, $subfieldtag);
 421                     my @results = $sth->fetchrow_array();
 422                     push @marcfieldsheaders, $results[0];
 423                 } else {
 424                     my $query = "SELECT liblibrarian FROM marc_tag_structure WHERE tagfield=?";
 425                     my $sth = $dbh->prepare($query);
 426                     $sth->execute($field);
 427                     my @results = $sth->fetchrow_array();
 428                     push @marcfieldsheaders, $results[0];
 429                 }
 430             }
 431         }
 432         $csv->combine(@marcfieldsheaders);
 433         $output = $csv->string() . "\n";
 434     }
 435
 436     # For each marcfield to export
 437     my @fieldstab;
 438     foreach (@marcfields) {
 439         my $marcfield = $_->{field};
 440         # If it is a subfield
 441         if (index($marcfield, '$') > 0) {
 442             my ($fieldtag, $subfieldtag) = split('\$', $marcfield);
 443             my @fields = $record->field($fieldtag);
 444             my @tmpfields;
 445
 446             # For each field
 447             foreach my $field (@fields) {
 448
 449                 # We take every matching subfield
 450                 my @subfields = $field->subfield($subfieldtag);
 451                 foreach my $subfield (@subfields) {
 452
 453                     # Getting authorised value
 454                     my $authvalues = GetKohaAuthorisedValuesFromField($fieldtag, $subfieldtag, $frameworkcode, undef);
 455                     push @tmpfields, (defined $authvalues->{$subfield}) ? $authvalues->{$subfield} : $subfield;
 456                 }
 457             }
 458             push (@fieldstab, join($subfieldseparator, @tmpfields));
 459         # Or a field
 460         } else {
 461             my @fields = ($record->field($marcfield));
 462             my $authvalues = GetKohaAuthorisedValuesFromField($marcfield, undef, $frameworkcode, undef);
 463             push (@fieldstab, join($fieldseparator, map((defined $authvalues->{$_->as_string}) ? $authvalues->{$_->as_string} : $_->as_string, @fields)));
 464          }
 465     };
 466
 467     $csv->combine(@fieldstab);
 468     $output .= $csv->string() . "\n";
 469
 470     return $output;
 471
 472 }
 473
 474
 475 =head2 html2marcxml
 476
 477 =over 4
 478
 479 my ($error,$marcxml) = html2marcxml($tags,$subfields,$values,$indicator,$ind_tag);
 480
 481 Returns a MARCXML scalar
 482
 483 this is used in addbiblio.pl and additem.pl to build the MARCXML record from
 484 the form submission.
 485
 486 FIXME: this could use some better code documentation
 487
 488 =back
 489
 490 =cut
 491
 492 sub html2marcxml {
 493     my ($tags,$subfields,$values,$indicator,$ind_tag) = @_;
 494         my $error;
 495         # add the header info
 496     my $marcxml= MARC::File::XML::header(C4::Context->preference('TemplateEncoding'),C4::Context->preference('marcflavour'));
 497
 498         # some flags used to figure out where in the record we are
 499     my $prevvalue;
 500     my $prevtag=-1;
 501     my $first=1;
 502     my $j = -1;
 503
 504         # handle characters that would cause the parser to choke FIXME: is there a more elegant solution?
 505     for (my $i=0;$i<=@$tags;$i++){
 506                 @$values[$i] =~ s/&/&amp;/g;
 507                 @$values[$i] =~ s/</&lt;/g;
 508                 @$values[$i] =~ s/>/&gt;/g;
 509                 @$values[$i] =~ s/"/&quot;/g;
 510                 @$values[$i] =~ s/'/&apos;/g;
 511
 512                 if ((@$tags[$i] ne $prevtag)){
 513                         $j++ unless (@$tags[$i] eq "");
 514                         #warn "IND:".substr(@$indicator[$j],0,1).substr(@$indicator[$j],1,1)." ".@$tags[$i];
 515                         if (!$first){
 516                                 $marcxml.="</datafield>\n";
 517                                 if ((@$tags[$i] > 10) && (@$values[$i] ne "")){
 518                         my $ind1 = substr(@$indicator[$j],0,1);
 519                                         my $ind2 = substr(@$indicator[$j],1,1);
 520                                         $marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
 521                                         $marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
 522                                         $first=0;
 523                                 } else {
 524                                         $first=1;
 525                                 }
 526                         } else {
 527                                 if (@$values[$i] ne "") {
 528                                         # handle the leader
 529                                         if (@$tags[$i] eq "000") {
 530                                                 $marcxml.="<leader>@$values[$i]</leader>\n";
 531                                                 $first=1;
 532                                         # rest of the fixed fields
 533                                         } elsif (@$tags[$i] lt '010') { # don't compare numerically 010 == 8
 534                                                 $marcxml.="<controlfield tag=\"@$tags[$i]\">@$values[$i]</controlfield>\n";
 535                                                 $first=1;
 536                                         } else {
 537                                                 my $ind1 = substr(@$indicator[$j],0,1);
 538                                                 my $ind2 = substr(@$indicator[$j],1,1);
 539                                                 $marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
 540                                                 $marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
 541                                                 $first=0;
 542                                         }
 543                                 }
 544                         }
 545                 } else { # @$tags[$i] eq $prevtag
 546                         if (@$values[$i] eq "") {
 547                         } else {
 548                                 if ($first){
 549                                         my $ind1 = substr(@$indicator[$j],0,1);
 550                                         my $ind2 = substr(@$indicator[$j],1,1);
 551                                         $marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
 552                                         $first=0;
 553                                 }
 554                                 $marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
 555                         }
 556                 }
 557                 $prevtag = @$tags[$i];
 558         }
 559         $marcxml.= MARC::File::XML::footer();
 560         #warn $marcxml;
 561         return ($error,$marcxml);
 562 }
 563
 564 =head2 html2marc
 565
 566 =over 4
 567
 568 Probably best to avoid using this ... it has some rather striking problems:
 569
 570 =over 2
 571
 572 * saves blank subfields
 573
 574 * subfield order is hardcoded to always start with 'a' for repeatable tags (because it is hardcoded in the addfield routine).
 575
 576 * only possible to specify one set of indicators for each set of tags (ie, one for all the 650s). (because they were stored in a hash with the tag as the key).
 577
 578 * the underlying routines didn't support subfield reordering or subfield repeatability.
 579
 580 =back
 581
 582 I've left it in here because it could be useful if someone took the time to fix it. -- kados
 583
 584 =back
 585
 586 =cut
 587
 588 sub html2marc {
 589     my ($dbh,$rtags,$rsubfields,$rvalues,%indicators) = @_;
 590     my $prevtag = -1;
 591     my $record = MARC::Record->new();
 592 #   my %subfieldlist=();
 593     my $prevvalue; # if tag <10
 594     my $field; # if tag >=10
 595     for (my $i=0; $i< @$rtags; $i++) {
 596         # rebuild MARC::Record
 597 #           warn "0=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ";
 598         if (@$rtags[$i] ne $prevtag) {
 599             if ($prevtag < 10) {
 600                 if ($prevvalue) {
 601                     if (($prevtag ne '000') && ($prevvalue ne "")) {
 602                         $record->add_fields((sprintf "%03s",$prevtag),$prevvalue);
 603                     } elsif ($prevvalue ne ""){
 604                         $record->leader($prevvalue);
 605                     }
 606                 }
 607             } else {
 608                 if (($field) && ($field ne "")) {
 609                     $record->add_fields($field);
 610                 }
 611             }
 612             $indicators{@$rtags[$i]}.='  ';
 613                 # skip blank tags, I hope this works
 614                 if (@$rtags[$i] eq ''){
 615                 $prevtag = @$rtags[$i];
 616                 undef $field;
 617                 next;
 618             }
 619             if (@$rtags[$i] <10) {
 620                 $prevvalue= @$rvalues[$i];
 621                 undef $field;
 622             } else {
 623                 undef $prevvalue;
 624                 if (@$rvalues[$i] eq "") {
 625                 undef $field;
 626                 } else {
 627                 $field = MARC::Field->new( (sprintf "%03s",@$rtags[$i]), substr($indicators{@$rtags[$i]},0,1),substr($indicators{@$rtags[$i]},1,1), @$rsubfields[$i] => @$rvalues[$i]);
 628                 }
 629 #           warn "1=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ".$field->as_formatted;
 630             }
 631             $prevtag = @$rtags[$i];
 632         } else {
 633             if (@$rtags[$i] <10) {
 634                 $prevvalue=@$rvalues[$i];
 635             } else {
 636                 if (length(@$rvalues[$i])>0) {
 637                     $field->add_subfields(@$rsubfields[$i] => @$rvalues[$i]);
 638 #           warn "2=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ".$field->as_formatted;
 639                 }
 640             }
 641             $prevtag= @$rtags[$i];
 642         }
 643     }
 644     #}
 645     # the last has not been included inside the loop... do it now !
 646     #use Data::Dumper;
 647     #warn Dumper($field->{_subfields});
 648     $record->add_fields($field) if (($field) && $field ne "");
 649     #warn "HTML2MARC=".$record->as_formatted;
 650     return $record;
 651 }
 652
 653 =head2 changeEncoding - Change the encoding of a record
 654
 655 =over 4
 656
 657 my ($error, $newrecord) = changeEncoding($record,$format,$flavour,$to_encoding,$from_encoding);
 658
 659 Changes the encoding of a record
 660
 661 =over 2
 662
 663 C<$record> - the record itself can be in ISO-2709, a MARC::Record object, or MARCXML for now (required)
 664
 665 C<$format> - MARC or MARCXML (required)
 666
 667 C<$flavour> - MARC21 or UNIMARC, if MARC21, it will change the leader (optional) [defaults to Koha system preference]
 668
 669 C<$to_encoding> - the encoding you want the record to end up in (optional) [UTF-8]
 670
 671 C<$from_encoding> - the encoding the record is currently in (optional, it will probably be able to tell unless there's a problem with the record)
 672
 673 =back
 674
 675 FIXME: the from_encoding doesn't work yet
 676
 677 FIXME: better handling for UNIMARC, it should allow management of 100 field
 678
 679 FIXME: shouldn't have to convert to and from xml/marc just to change encoding someone needs to re-write MARC::Record's 'encoding' method to actually alter the encoding rather than just changing the leader
 680
 681 =back
 682
 683 =cut
 684
 685 sub changeEncoding {
 686         my ($record,$format,$flavour,$to_encoding,$from_encoding) = @_;
 687         my $newrecord;
 688         my $error;
 689         unless($flavour) {$flavour = C4::Context->preference("marcflavour")};
 690         unless($to_encoding) {$to_encoding = "UTF-8"};
 691
 692         # ISO-2709 Record (MARC21 or UNIMARC)
 693         if (lc($format) =~ /^marc$/o) {
 694                 # if we're converting encoding of an ISO2709 file, we need to roundtrip through XML
 695                 #       because MARC::Record doesn't directly provide us with an encoding method
 696                 #       It's definitely less than idea and should be fixed eventually - kados
 697                 my $marcxml; # temporary storage of MARCXML scalar
 698                 ($error,$marcxml) = marc2marcxml($record,$to_encoding,$flavour);
 699                 unless ($error) {
 700                         ($error,$newrecord) = marcxml2marc($marcxml,$to_encoding,$flavour);
 701                 }
 702
 703         # MARCXML Record
 704         } elsif (lc($format) =~ /^marcxml$/o) { # MARCXML Record
 705                 my $marc;
 706                 ($error,$marc) = marcxml2marc($record,$to_encoding,$flavour);
 707                 unless ($error) {
 708                         ($error,$newrecord) = marc2marcxml($record,$to_encoding,$flavour);
 709                 }
 710         } else {
 711                 $error.="Unsupported record format:".$format;
 712         }
 713         return ($error,$newrecord);
 714 }
 715
 716 =head2 marc2bibtex - Convert from MARC21 and UNIMARC to BibTex
 717
 718 =over 4
 719
 720 my ($bibtex) = marc2bibtex($record, $id);
 721
 722 Returns a BibTex scalar
 723
 724 =over 2
 725
 726 C<$record> - a MARC::Record object
 727
 728 C<$id> - an id for the BibTex record (might be the biblionumber)
 729
 730 =back
 731
 732 =back
 733
 734 =cut
 735
 736
 737 sub marc2bibtex {
 738     my ($record, $id) = @_;
 739     my $tex;
 740
 741     # Authors
 742     my $marcauthors = GetMarcAuthors($record,C4::Context->preference("marcflavour"));
 743     my $author;
 744     for my $authors ( map { map { @$_ } values %$_  } @$marcauthors  ) {
 745         $author .= " and " if ($author && $$authors{value});
 746         $author .= $$authors{value} if ($$authors{value});
 747     }
 748
 749     # Defining the conversion hash according to the marcflavour
 750     my %bh;
 751     if (C4::Context->preference("marcflavour") eq "UNIMARC") {
 752
 753         # FIXME, TODO : handle repeatable fields
 754         # TODO : handle more types of documents
 755
 756         # Unimarc to bibtex hash
 757         %bh = (
 758
 759             # Mandatory
 760             author    => $author,
 761             title     => $record->subfield("200", "a") || "",
 762             editor    => $record->subfield("210", "g") || "",
 763             publisher => $record->subfield("210", "c") || "",
 764             year      => $record->subfield("210", "d") || $record->subfield("210", "h") || "",
 765
 766             # Optional
 767             volume  =>  $record->subfield("200", "v") || "",
 768             series  =>  $record->subfield("225", "a") || "",
 769             address =>  $record->subfield("210", "a") || "",
 770             edition =>  $record->subfield("205", "a") || "",
 771             note    =>  $record->subfield("300", "a") || "",
 772             url     =>  $record->subfield("856", "u") || ""
 773         );
 774     } else {
 775
 776         # Marc21 to bibtex hash
 777         %bh = (
 778
 779             # Mandatory
 780             author    => $author,
 781             title     => $record->subfield("245", "a") || "",
 782             editor    => $record->subfield("260", "f") || "",
 783             publisher => $record->subfield("260", "b") || "",
 784             year      => $record->subfield("260", "c") || $record->subfield("260", "g") || "",
 785
 786             # Optional
 787             # unimarc to marc21 specification says not to convert 200$v to marc21
 788             series  =>  $record->subfield("490", "a") || "",
 789             address =>  $record->subfield("260", "a") || "",
 790             edition =>  $record->subfield("250", "a") || "",
 791             note    =>  $record->subfield("500", "a") || "",
 792             url     =>  $record->subfield("856", "u") || ""
 793         );
 794     }
 795
 796     $tex .= "\@book{";
 797     $tex .= join(",\n", $id, map { $bh{$_} ? qq(\t$_ = "$bh{$_}") : () } keys %bh);
 798     $tex .= "\n}\n";
 799
 800     return $tex;
 801 }
 802
 803
 804 =head1 INTERNAL FUNCTIONS
 805
 806 =head2 _entity_encode - Entity-encode an array of strings
 807
 808 =over 4
 809
 810 my ($entity_encoded_string) = _entity_encode($string);
 811
 812 or
 813
 814 my (@entity_encoded_strings) = _entity_encode(@strings);
 815
 816 Entity-encode an array of strings
 817
 818 =back
 819
 820 =cut
 821
 822 sub _entity_encode {
 823         my @strings = @_;
 824         my @strings_entity_encoded;
 825         foreach my $string (@strings) {
 826                 my $nfc_string = NFC($string);
 827                 $nfc_string =~ s/([\x{0080}-\x{fffd}])/sprintf('&#x%X;',ord($1))/sgoe;
 828                 push @strings_entity_encoded, $nfc_string;
 829         }
 830         return @strings_entity_encoded;
 831 }
 832
 833 END { }       # module clean-up code here (global destructor)
 834 1;
 835 __END__
 836
 837 =head1 AUTHOR
 838
 839 Joshua Ferraro <jmf@liblime.com>
 840
 841 =head1 MODIFICATIONS
 842
 843
 844 =cut