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
  18 # with Koha; if not, write to the Free Software Foundation, Inc.,
  19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20 #
  21 #
  22 use strict;
  23 #use warnings; FIXME - Bug 2505
  24
  25 # please specify in which methods a given module is used
  26 use MARC::Record; # marc2marcxml, marcxml2marc, html2marc, changeEncoding
  27 use MARC::File::XML; # marc2marcxml, marcxml2marc, html2marcxml, changeEncoding
  28 use MARC::Crosswalk::DublinCore; # marc2dcxml
  29 use Biblio::EndnoteStyle;
  30 use Unicode::Normalize; # _entity_encode
  31 use XML::LibXSLT;
  32 use XML::LibXML;
  33 use C4::Biblio; #marc2bibtex
  34 use C4::Csv; #marc2csv
  35 use C4::Koha; #marc2csv
  36 use YAML; #marcrecords2csv
  37 use Text::CSV::Encoded; #marc2csv
  38
  39 use vars qw($VERSION @ISA @EXPORT);
  40
  41 # set the version for version checking
  42 $VERSION = 3.00;
  43
  44 @ISA = qw(Exporter);
  45
  46 # only export API methods
  47
  48 @EXPORT = qw(
  49   &marc2endnote
  50   &marc2marc
  51   &marc2marcxml
  52   &marcxml2marc
  53   &marc2dcxml
  54   &marc2modsxml
  55   &marc2bibtex
  56   &marc2csv
  57   &html2marcxml
  58   &html2marc
  59   &changeEncoding
  60 );
  61
  62 =head1 NAME
  63
  64 C4::Record - MARC, MARCXML, DC, MODS, XML, etc. Record Management Functions and API
  65
  66 =head1 SYNOPSIS
  67
  68 New in Koha 3.x. This module handles all record-related management functions.
  69
  70 =head1 API (EXPORTED FUNCTIONS)
  71
  72 =head2 marc2marc - Convert from one flavour of ISO-2709 to another
  73
  74   my ($error,$newmarc) = marc2marc($marc,$to_flavour,$from_flavour,$encoding);
  75
  76 Returns an ISO-2709 scalar
  77
  78 =cut
  79
  80 sub marc2marc {
  81         my ($marc,$to_flavour,$from_flavour,$encoding) = @_;
  82         my $error = "Feature not yet implemented\n";
  83         return ($error,$marc);
  84 }
  85
  86 =head2 marc2marcxml - Convert from ISO-2709 to MARCXML
  87
  88   my ($error,$marcxml) = marc2marcxml($marc,$encoding,$flavour);
  89
  90 Returns a MARCXML scalar
  91
  92 C<$marc> - an ISO-2709 scalar or MARC::Record object
  93
  94 C<$encoding> - UTF-8 or MARC-8 [UTF-8]
  95
  96 C<$flavour> - MARC21 or UNIMARC
  97
  98 C<$dont_entity_encode> - a flag that instructs marc2marcxml not to entity encode the xml before returning (optional)
  99
 100 =cut
 101
 102 sub marc2marcxml {
 103         my ($marc,$encoding,$flavour,$dont_entity_encode) = @_;
 104         my $error; # the error string
 105         my $marcxml; # the final MARCXML scalar
 106
 107         # test if it's already a MARC::Record object, if not, make it one
 108         my $marc_record_obj;
 109         if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
 110                 $marc_record_obj = $marc;
 111         } else { # it's not a MARC::Record object, make it one
 112                 eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
 113
 114                 # conversion to MARC::Record object failed, populate $error
 115                 if ($@) { $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR };
 116         }
 117         # only proceed if no errors so far
 118         unless ($error) {
 119
 120                 # check the record for warnings
 121                 my @warnings = $marc_record_obj->warnings();
 122                 if (@warnings) {
 123                         warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
 124                         foreach my $warn (@warnings) { warn "\t".$warn };
 125                 }
 126                 unless($encoding) {$encoding = "UTF-8"}; # set default encoding
 127                 unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set default MARC flavour
 128
 129                 # attempt to convert the record to MARCXML
 130                 eval { $marcxml = $marc_record_obj->as_xml_record($flavour) }; #handle exceptions
 131
 132                 # record creation failed, populate $error
 133                 if ($@) {
 134                         $error .= "Creation of MARCXML failed:".$MARC::File::ERROR;
 135                         $error .= "Additional information:\n";
 136                         my @warnings = $@->warnings();
 137                         foreach my $warn (@warnings) { $error.=$warn."\n" };
 138
 139                 # record creation was successful
 140         } else {
 141
 142                         # check the record for warning flags again (warnings() will be cleared already if there was an error, see above block
 143                         @warnings = $marc_record_obj->warnings();
 144                         if (@warnings) {
 145                                 warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
 146                                 foreach my $warn (@warnings) { warn "\t".$warn };
 147                         }
 148                 }
 149
 150                 # only proceed if no errors so far
 151                 unless ($error) {
 152
 153                         # entity encode the XML unless instructed not to
 154                 unless ($dont_entity_encode) {
 155                         my ($marcxml_entity_encoded) = _entity_encode($marcxml);
 156                         $marcxml = $marcxml_entity_encoded;
 157                 }
 158                 }
 159         }
 160         # return result to calling program
 161         return ($error,$marcxml);
 162 }
 163
 164 =head2 marcxml2marc - Convert from MARCXML to ISO-2709
 165
 166   my ($error,$marc) = marcxml2marc($marcxml,$encoding,$flavour);
 167
 168 Returns an ISO-2709 scalar
 169
 170 C<$marcxml> - a MARCXML record
 171
 172 C<$encoding> - UTF-8 or MARC-8 [UTF-8]
 173
 174 C<$flavour> - MARC21 or UNIMARC
 175
 176 =cut
 177
 178 sub marcxml2marc {
 179     my ($marcxml,$encoding,$flavour) = @_;
 180         my $error; # the error string
 181         my $marc; # the final ISO-2709 scalar
 182         unless($encoding) {$encoding = "UTF-8"}; # set the default encoding
 183         unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set the default MARC flavour
 184
 185         # attempt to do the conversion
 186         eval { $marc = MARC::Record->new_from_xml($marcxml,$encoding,$flavour) }; # handle exceptions
 187
 188         # record creation failed, populate $error
 189         if ($@) {$error .="\nCreation of MARCXML Record failed: ".$@;
 190                 $error.=$MARC::File::ERROR if ($MARC::File::ERROR);
 191                 };
 192         # return result to calling program
 193         return ($error,$marc);
 194 }
 195
 196 =head2 marc2dcxml - Convert from ISO-2709 to Dublin Core
 197
 198   my ($error,$dcxml) = marc2dcxml($marc,$qualified);
 199
 200 Returns a DublinCore::Record object, will eventually return a Dublin Core scalar
 201
 202 FIXME: should return actual XML, not just an object
 203
 204 C<$marc> - an ISO-2709 scalar or MARC::Record object
 205
 206 C<$qualified> - specify whether qualified Dublin Core should be used in the input or output [0]
 207
 208 =cut
 209
 210 sub marc2dcxml {
 211         my ($marc,$qualified) = @_;
 212         my $error;
 213     # test if it's already a MARC::Record object, if not, make it one
 214     my $marc_record_obj;
 215     if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
 216         $marc_record_obj = $marc;
 217     } else { # it's not a MARC::Record object, make it one
 218                 eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
 219
 220                 # conversion to MARC::Record object failed, populate $error
 221                 if ($@) {
 222                         $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR;
 223                 }
 224         }
 225         my $crosswalk = MARC::Crosswalk::DublinCore->new;
 226         if ($qualified) {
 227                 $crosswalk = MARC::Crosswalk::DublinCore->new( qualified => 1 );
 228         }
 229         my $dcxml = $crosswalk->as_dublincore($marc_record_obj);
 230         my $dcxmlfinal = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
 231         $dcxmlfinal .= "<metadata
 232   xmlns=\"http://example.org/myapp/\"
 233   xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
 234   xsi:schemaLocation=\"http://example.org/myapp/ http://example.org/myapp/schema.xsd\"
 235   xmlns:dc=\"http://purl.org/dc/elements/1.1/\"
 236   xmlns:dcterms=\"http://purl.org/dc/terms/\">";
 237
 238         foreach my $element ( $dcxml->elements() ) {
 239                 $dcxmlfinal.="<"."dc:".$element->name().">".$element->content()."</"."dc:".$element->name().">\n";
 240     }
 241         $dcxmlfinal .= "\n</metadata>";
 242         return ($error,$dcxmlfinal);
 243 }
 244
 245 =head2 marc2modsxml - Convert from ISO-2709 to MODS
 246
 247   my ($error,$modsxml) = marc2modsxml($marc);
 248
 249 Returns a MODS scalar
 250
 251 =cut
 252
 253 sub marc2modsxml {
 254         my ($marc) = @_;
 255         # grab the XML, run it through our stylesheet, push it out to the browser
 256         my $xmlrecord = marc2marcxml($marc);
 257         my $xslfile = C4::Context->config('intrahtdocs')."/prog/en/xslt/MARC21slim2MODS3-1.xsl";
 258         my $parser = XML::LibXML->new();
 259         my $xslt = XML::LibXSLT->new();
 260         my $source = $parser->parse_string($xmlrecord);
 261         my $style_doc = $parser->parse_file($xslfile);
 262         my $stylesheet = $xslt->parse_stylesheet($style_doc);
 263         my $results = $stylesheet->transform($source);
 264         my $newxmlrecord = $stylesheet->output_string($results);
 265         return ($newxmlrecord);
 266 }
 267
 268 sub marc2endnote {
 269     my ($marc) = @_;
 270         my $marc_rec_obj =  MARC::Record->new_from_usmarc($marc);
 271         my $f260 = $marc_rec_obj->field('260');
 272         my $f260a = $f260->subfield('a') if $f260;
 273     my $f710 = $marc_rec_obj->field('710');
 274     my $f710a = $f710->subfield('a') if $f710;
 275         my $f500 = $marc_rec_obj->field('500');
 276         my $abstract = $f500->subfield('a') if $f500;
 277         my $fields = {
 278                 DB => C4::Context->preference("LibraryName"),
 279                 Title => $marc_rec_obj->title(),
 280                 Author => $marc_rec_obj->author(),
 281                 Publisher => $f710a,
 282                 City => $f260a,
 283                 Year => $marc_rec_obj->publication_date,
 284                 Abstract => $abstract,
 285         };
 286         my $endnote;
 287         my $style = new Biblio::EndnoteStyle();
 288         my $template;
 289         $template.= "DB - DB\n" if C4::Context->preference("LibraryName");
 290         $template.="T1 - Title\n" if $marc_rec_obj->title();
 291         $template.="A1 - Author\n" if $marc_rec_obj->author();
 292         $template.="PB - Publisher\n" if  $f710a;
 293         $template.="CY - City\n" if $f260a;
 294         $template.="Y1 - Year\n" if $marc_rec_obj->publication_date;
 295         $template.="AB - Abstract\n" if $abstract;
 296         my ($text, $errmsg) = $style->format($template, $fields);
 297         return ($text);
 298
 299 }
 300
 301 =head2 marc2csv - Convert several records from UNIMARC to CSV
 302
 303   my ($csv) = marc2csv($biblios, $csvprofileid);
 304
 305 Pre and postprocessing can be done through a YAML file
 306
 307 Returns a CSV scalar
 308
 309 C<$biblio> - a list of biblionumbers
 310
 311 C<$csvprofileid> - the id of the CSV profile to use for the export (see export_format.export_format_id and the GetCsvProfiles function in C4::Csv)
 312
 313 =cut
 314
 315 sub marc2csv {
 316     my ($biblios, $id) = @_;
 317     my $output;
 318     my $csv = Text::CSV::Encoded->new();
 319
 320     # Getting yaml file
 321     my $configfile = "../tools/csv-profiles/$id.yaml";
 322     my ($preprocess, $postprocess, $fieldprocessing);
 323     if (-e $configfile){
 324         ($preprocess,$postprocess, $fieldprocessing) = YAML::LoadFile($configfile);
 325     }
 326
 327     # Preprocessing
 328     eval $preprocess if ($preprocess);
 329
 330     my $firstpass = 1;
 331     foreach my $biblio (@$biblios) {
 332         $output .= marcrecord2csv($biblio, $id, $firstpass, $csv, $fieldprocessing) ;
 333         $firstpass = 0;
 334     }
 335
 336     # Postprocessing
 337     eval $postprocess if ($postprocess);
 338
 339     return $output;
 340 }
 341
 342 =head2 marcrecord2csv - Convert a single record from UNIMARC to CSV
 343
 344   my ($csv) = marcrecord2csv($biblio, $csvprofileid, $header);
 345
 346 Returns a CSV scalar
 347
 348 C<$biblio> - a biblionumber
 349
 350 C<$csvprofileid> - the id of the CSV profile to use for the export (see export_format.export_format_id and the GetCsvProfiles function in C4::Csv)
 351
 352 C<$header> - true if the headers are to be printed (typically at first pass)
 353
 354 C<$csv> - an already initialised Text::CSV object
 355
 356 =cut
 357
 358
 359 sub marcrecord2csv {
 360     my ($biblio, $id, $header, $csv, $fieldprocessing) = @_;
 361     my $output;
 362
 363     # Getting the record
 364     my $record = GetMarcBiblio($biblio);
 365     next unless $record;
 366     # Getting the framework
 367     my $frameworkcode = GetFrameworkCode($biblio);
 368
 369     # Getting information about the csv profile
 370     my $profile = GetCsvProfile($id);
 371
 372     # Getting output encoding
 373     my $encoding          = $profile->{encoding} || 'utf8';
 374     # Getting separators
 375     my $csvseparator      = $profile->{csv_separator}      || ',';
 376     my $fieldseparator    = $profile->{field_separator}    || '#';
 377     my $subfieldseparator = $profile->{subfield_separator} || '|';
 378
 379     # TODO: Be more generic (in case we have to handle other protected chars or more separators)
 380     if ($csvseparator eq '\t') { $csvseparator = "\t" }
 381     if ($fieldseparator eq '\t') { $fieldseparator = "\t" }
 382     if ($subfieldseparator eq '\t') { $subfieldseparator = "\t" }
 383     if ($csvseparator eq '\n') { $csvseparator = "\n" }
 384     if ($fieldseparator eq '\n') { $fieldseparator = "\n" }
 385     if ($subfieldseparator eq '\n') { $subfieldseparator = "\n" }
 386
 387     $csv = $csv->encoding_out($encoding) ;
 388     $csv->sep_char($csvseparator);
 389
 390     # Getting the marcfields
 391     my $marcfieldslist = $profile->{marcfields};
 392
 393     # Getting the marcfields as an array
 394     my @marcfieldsarray = split('\|', $marcfieldslist);
 395
 396    # Separating the marcfields from the the user-supplied headers
 397     my @marcfields;
 398     foreach (@marcfieldsarray) {
 399         my @result = split('=', $_);
 400         if (scalar(@result) == 2) {
 401            push @marcfields, { header => $result[0], field => $result[1] };
 402         } else {
 403            push @marcfields, { field => $result[0] }
 404         }
 405     }
 406
 407     # If we have to insert the headers
 408     if ($header) {
 409         my @marcfieldsheaders;
 410         my $dbh   = C4::Context->dbh;
 411
 412         # For each field or subfield
 413         foreach (@marcfields) {
 414
 415             my $field = $_->{field};
 416
 417             # If we have a user-supplied header, we use it
 418             if (exists $_->{header}) {
 419                     push @marcfieldsheaders, $_->{header};
 420             } else {
 421                 # If not, we get the matching tag name from koha
 422                 if (index($field, '$') > 0) {
 423                     my ($fieldtag, $subfieldtag) = split('\$', $field);
 424                     my $query = "SELECT liblibrarian FROM marc_subfield_structure WHERE tagfield=? AND tagsubfield=?";
 425                     my $sth = $dbh->prepare($query);
 426                     $sth->execute($fieldtag, $subfieldtag);
 427                     my @results = $sth->fetchrow_array();
 428                     push @marcfieldsheaders, $results[0];
 429                 } else {
 430                     my $query = "SELECT liblibrarian FROM marc_tag_structure WHERE tagfield=?";
 431                     my $sth = $dbh->prepare($query);
 432                     $sth->execute($field);
 433                     my @results = $sth->fetchrow_array();
 434                     push @marcfieldsheaders, $results[0];
 435                 }
 436             }
 437         }
 438         $csv->combine(@marcfieldsheaders);
 439         $output = $csv->string() . "\n";
 440     }
 441
 442     # For each marcfield to export
 443     my @fieldstab;
 444     foreach (@marcfields) {
 445         my $marcfield = $_->{field};
 446         # If it is a subfield
 447         if (index($marcfield, '$') > 0) {
 448             my ($fieldtag, $subfieldtag) = split('\$', $marcfield);
 449             my @fields = $record->field($fieldtag);
 450             my @tmpfields;
 451
 452             # For each field
 453             foreach my $field (@fields) {
 454
 455                 # We take every matching subfield
 456                 my @subfields = $field->subfield($subfieldtag);
 457                 foreach my $subfield (@subfields) {
 458
 459                     # Getting authorised value
 460                     my $authvalues = GetKohaAuthorisedValuesFromField($fieldtag, $subfieldtag, $frameworkcode, undef);
 461                     push @tmpfields, (defined $authvalues->{$subfield}) ? $authvalues->{$subfield} : $subfield;
 462                 }
 463             }
 464             push (@fieldstab, join($subfieldseparator, @tmpfields));
 465         # Or a field
 466         } else {
 467             my @fields = ($record->field($marcfield));
 468             my $authvalues = GetKohaAuthorisedValuesFromField($marcfield, undef, $frameworkcode, undef);
 469
 470             my @valuesarray;
 471             foreach (@fields) {
 472                 my $value;
 473
 474                 # Getting authorised value
 475                 $value = defined $authvalues->{$_->as_string} ? $authvalues->{$_->as_string} : $_->as_string;
 476
 477                 # Field processing
 478                 eval $fieldprocessing if ($fieldprocessing);
 479
 480                 push @valuesarray, $value;
 481             }
 482             push (@fieldstab, join($fieldseparator, @valuesarray));
 483          }
 484     };
 485
 486     $csv->combine(@fieldstab);
 487     $output .= $csv->string() . "\n";
 488
 489     return $output;
 490
 491 }
 492
 493
 494 =head2 html2marcxml
 495
 496   my ($error,$marcxml) = html2marcxml($tags,$subfields,$values,$indicator,$ind_tag);
 497
 498 Returns a MARCXML scalar
 499
 500 this is used in addbiblio.pl and additem.pl to build the MARCXML record from
 501 the form submission.
 502
 503 FIXME: this could use some better code documentation
 504
 505 =cut
 506
 507 sub html2marcxml {
 508     my ($tags,$subfields,$values,$indicator,$ind_tag) = @_;
 509         my $error;
 510         # add the header info
 511     my $marcxml= MARC::File::XML::header(C4::Context->preference('TemplateEncoding'),C4::Context->preference('marcflavour'));
 512
 513         # some flags used to figure out where in the record we are
 514     my $prevvalue;
 515     my $prevtag=-1;
 516     my $first=1;
 517     my $j = -1;
 518
 519         # handle characters that would cause the parser to choke FIXME: is there a more elegant solution?
 520     for (my $i=0;$i<=@$tags;$i++){
 521                 @$values[$i] =~ s/&/&amp;/g;
 522                 @$values[$i] =~ s/</&lt;/g;
 523                 @$values[$i] =~ s/>/&gt;/g;
 524                 @$values[$i] =~ s/"/&quot;/g;
 525                 @$values[$i] =~ s/'/&apos;/g;
 526
 527                 if ((@$tags[$i] ne $prevtag)){
 528                         $j++ unless (@$tags[$i] eq "");
 529                         #warn "IND:".substr(@$indicator[$j],0,1).substr(@$indicator[$j],1,1)." ".@$tags[$i];
 530                         if (!$first){
 531                                 $marcxml.="</datafield>\n";
 532                                 if ((@$tags[$i] > 10) && (@$values[$i] ne "")){
 533                         my $ind1 = substr(@$indicator[$j],0,1);
 534                                         my $ind2 = substr(@$indicator[$j],1,1);
 535                                         $marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
 536                                         $marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
 537                                         $first=0;
 538                                 } else {
 539                                         $first=1;
 540                                 }
 541                         } else {
 542                                 if (@$values[$i] ne "") {
 543                                         # handle the leader
 544                                         if (@$tags[$i] eq "000") {
 545                                                 $marcxml.="<leader>@$values[$i]</leader>\n";
 546                                                 $first=1;
 547                                         # rest of the fixed fields
 548                                         } elsif (@$tags[$i] lt '010') { # don't compare numerically 010 == 8
 549                                                 $marcxml.="<controlfield tag=\"@$tags[$i]\">@$values[$i]</controlfield>\n";
 550                                                 $first=1;
 551                                         } else {
 552                                                 my $ind1 = substr(@$indicator[$j],0,1);
 553                                                 my $ind2 = substr(@$indicator[$j],1,1);
 554                                                 $marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
 555                                                 $marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
 556                                                 $first=0;
 557                                         }
 558                                 }
 559                         }
 560                 } else { # @$tags[$i] eq $prevtag
 561                         if (@$values[$i] eq "") {
 562                         } else {
 563                                 if ($first){
 564                                         my $ind1 = substr(@$indicator[$j],0,1);
 565                                         my $ind2 = substr(@$indicator[$j],1,1);
 566                                         $marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
 567                                         $first=0;
 568                                 }
 569                                 $marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
 570                         }
 571                 }
 572                 $prevtag = @$tags[$i];
 573         }
 574         $marcxml.= MARC::File::XML::footer();
 575         #warn $marcxml;
 576         return ($error,$marcxml);
 577 }
 578
 579 =head2 html2marc
 580
 581 Probably best to avoid using this ... it has some rather striking problems:
 582
 583 * saves blank subfields
 584
 585 * subfield order is hardcoded to always start with 'a' for repeatable tags (because it is hardcoded in the addfield routine).
 586
 587 * only possible to specify one set of indicators for each set of tags (ie, one for all the 650s). (because they were stored in a hash with the tag as the key).
 588
 589 * the underlying routines didn't support subfield reordering or subfield repeatability.
 590
 591 I've left it in here because it could be useful if someone took the time to fix it. -- kados
 592
 593 =cut
 594
 595 sub html2marc {
 596     my ($dbh,$rtags,$rsubfields,$rvalues,%indicators) = @_;
 597     my $prevtag = -1;
 598     my $record = MARC::Record->new();
 599 #   my %subfieldlist=();
 600     my $prevvalue; # if tag <10
 601     my $field; # if tag >=10
 602     for (my $i=0; $i< @$rtags; $i++) {
 603         # rebuild MARC::Record
 604 #           warn "0=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ";
 605         if (@$rtags[$i] ne $prevtag) {
 606             if ($prevtag < 10) {
 607                 if ($prevvalue) {
 608                     if (($prevtag ne '000') && ($prevvalue ne "")) {
 609                         $record->add_fields((sprintf "%03s",$prevtag),$prevvalue);
 610                     } elsif ($prevvalue ne ""){
 611                         $record->leader($prevvalue);
 612                     }
 613                 }
 614             } else {
 615                 if (($field) && ($field ne "")) {
 616                     $record->add_fields($field);
 617                 }
 618             }
 619             $indicators{@$rtags[$i]}.='  ';
 620                 # skip blank tags, I hope this works
 621                 if (@$rtags[$i] eq ''){
 622                 $prevtag = @$rtags[$i];
 623                 undef $field;
 624                 next;
 625             }
 626             if (@$rtags[$i] <10) {
 627                 $prevvalue= @$rvalues[$i];
 628                 undef $field;
 629             } else {
 630                 undef $prevvalue;
 631                 if (@$rvalues[$i] eq "") {
 632                 undef $field;
 633                 } else {
 634                 $field = MARC::Field->new( (sprintf "%03s",@$rtags[$i]), substr($indicators{@$rtags[$i]},0,1),substr($indicators{@$rtags[$i]},1,1), @$rsubfields[$i] => @$rvalues[$i]);
 635                 }
 636 #           warn "1=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ".$field->as_formatted;
 637             }
 638             $prevtag = @$rtags[$i];
 639         } else {
 640             if (@$rtags[$i] <10) {
 641                 $prevvalue=@$rvalues[$i];
 642             } else {
 643                 if (length(@$rvalues[$i])>0) {
 644                     $field->add_subfields(@$rsubfields[$i] => @$rvalues[$i]);
 645 #           warn "2=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ".$field->as_formatted;
 646                 }
 647             }
 648             $prevtag= @$rtags[$i];
 649         }
 650     }
 651     #}
 652     # the last has not been included inside the loop... do it now !
 653     #use Data::Dumper;
 654     #warn Dumper($field->{_subfields});
 655     $record->add_fields($field) if (($field) && $field ne "");
 656     #warn "HTML2MARC=".$record->as_formatted;
 657     return $record;
 658 }
 659
 660 =head2 changeEncoding - Change the encoding of a record
 661
 662   my ($error, $newrecord) = changeEncoding($record,$format,$flavour,$to_encoding,$from_encoding);
 663
 664 Changes the encoding of a record
 665
 666 C<$record> - the record itself can be in ISO-2709, a MARC::Record object, or MARCXML for now (required)
 667
 668 C<$format> - MARC or MARCXML (required)
 669
 670 C<$flavour> - MARC21 or UNIMARC, if MARC21, it will change the leader (optional) [defaults to Koha system preference]
 671
 672 C<$to_encoding> - the encoding you want the record to end up in (optional) [UTF-8]
 673
 674 C<$from_encoding> - the encoding the record is currently in (optional, it will probably be able to tell unless there's a problem with the record)
 675
 676 FIXME: the from_encoding doesn't work yet
 677
 678 FIXME: better handling for UNIMARC, it should allow management of 100 field
 679
 680 FIXME: shouldn't have to convert to and from xml/marc just to change encoding someone needs to re-write MARC::Record's 'encoding' method to actually alter the encoding rather than just changing the leader
 681
 682 =cut
 683
 684 sub changeEncoding {
 685         my ($record,$format,$flavour,$to_encoding,$from_encoding) = @_;
 686         my $newrecord;
 687         my $error;
 688         unless($flavour) {$flavour = C4::Context->preference("marcflavour")};
 689         unless($to_encoding) {$to_encoding = "UTF-8"};
 690
 691         # ISO-2709 Record (MARC21 or UNIMARC)
 692         if (lc($format) =~ /^marc$/o) {
 693                 # if we're converting encoding of an ISO2709 file, we need to roundtrip through XML
 694                 #       because MARC::Record doesn't directly provide us with an encoding method
 695                 #       It's definitely less than idea and should be fixed eventually - kados
 696                 my $marcxml; # temporary storage of MARCXML scalar
 697                 ($error,$marcxml) = marc2marcxml($record,$to_encoding,$flavour);
 698                 unless ($error) {
 699                         ($error,$newrecord) = marcxml2marc($marcxml,$to_encoding,$flavour);
 700                 }
 701
 702         # MARCXML Record
 703         } elsif (lc($format) =~ /^marcxml$/o) { # MARCXML Record
 704                 my $marc;
 705                 ($error,$marc) = marcxml2marc($record,$to_encoding,$flavour);
 706                 unless ($error) {
 707                         ($error,$newrecord) = marc2marcxml($record,$to_encoding,$flavour);
 708                 }
 709         } else {
 710                 $error.="Unsupported record format:".$format;
 711         }
 712         return ($error,$newrecord);
 713 }
 714
 715 =head2 marc2bibtex - Convert from MARC21 and UNIMARC to BibTex
 716
 717   my ($bibtex) = marc2bibtex($record, $id);
 718
 719 Returns a BibTex scalar
 720
 721 C<$record> - a MARC::Record object
 722
 723 C<$id> - an id for the BibTex record (might be the biblionumber)
 724
 725 =cut
 726
 727
 728 sub marc2bibtex {
 729     my ($record, $id) = @_;
 730     my $tex;
 731
 732     # Authors
 733     my $marcauthors = GetMarcAuthors($record,C4::Context->preference("marcflavour"));
 734     my $author;
 735     for my $authors ( map { map { @$_ } values %$_  } @$marcauthors  ) {
 736         $author .= " and " if ($author && $$authors{value});
 737         $author .= $$authors{value} if ($$authors{value});
 738     }
 739
 740     # Defining the conversion hash according to the marcflavour
 741     my %bh;
 742     if (C4::Context->preference("marcflavour") eq "UNIMARC") {
 743
 744         # FIXME, TODO : handle repeatable fields
 745         # TODO : handle more types of documents
 746
 747         # Unimarc to bibtex hash
 748         %bh = (
 749
 750             # Mandatory
 751             author    => $author,
 752             title     => $record->subfield("200", "a") || "",
 753             editor    => $record->subfield("210", "g") || "",
 754             publisher => $record->subfield("210", "c") || "",
 755             year      => $record->subfield("210", "d") || $record->subfield("210", "h") || "",
 756
 757             # Optional
 758             volume  =>  $record->subfield("200", "v") || "",
 759             series  =>  $record->subfield("225", "a") || "",
 760             address =>  $record->subfield("210", "a") || "",
 761             edition =>  $record->subfield("205", "a") || "",
 762             note    =>  $record->subfield("300", "a") || "",
 763             url     =>  $record->subfield("856", "u") || ""
 764         );
 765     } else {
 766
 767         # Marc21 to bibtex hash
 768         %bh = (
 769
 770             # Mandatory
 771             author    => $author,
 772             title     => $record->subfield("245", "a") || "",
 773             editor    => $record->subfield("260", "f") || "",
 774             publisher => $record->subfield("260", "b") || "",
 775             year      => $record->subfield("260", "c") || $record->subfield("260", "g") || "",
 776
 777             # Optional
 778             # unimarc to marc21 specification says not to convert 200$v to marc21
 779             series  =>  $record->subfield("490", "a") || "",
 780             address =>  $record->subfield("260", "a") || "",
 781             edition =>  $record->subfield("250", "a") || "",
 782             note    =>  $record->subfield("500", "a") || "",
 783             url     =>  $record->subfield("856", "u") || ""
 784         );
 785     }
 786
 787     $tex .= "\@book{";
 788     $tex .= join(",\n", $id, map { $bh{$_} ? qq(\t$_ = "$bh{$_}") : () } keys %bh);
 789     $tex .= "\n}\n";
 790
 791     return $tex;
 792 }
 793
 794
 795 =head1 INTERNAL FUNCTIONS
 796
 797 =head2 _entity_encode - Entity-encode an array of strings
 798
 799   my ($entity_encoded_string) = _entity_encode($string);
 800
 801 or
 802
 803   my (@entity_encoded_strings) = _entity_encode(@strings);
 804
 805 Entity-encode an array of strings
 806
 807 =cut
 808
 809 sub _entity_encode {
 810         my @strings = @_;
 811         my @strings_entity_encoded;
 812         foreach my $string (@strings) {
 813                 my $nfc_string = NFC($string);
 814                 $nfc_string =~ s/([\x{0080}-\x{fffd}])/sprintf('&#x%X;',ord($1))/sgoe;
 815                 push @strings_entity_encoded, $nfc_string;
 816         }
 817         return @strings_entity_encoded;
 818 }
 819
 820 END { }       # module clean-up code here (global destructor)
 821 1;
 822 __END__
 823
 824 =head1 AUTHOR
 825
 826 Joshua Ferraro <jmf@liblime.com>
 827
 828 =head1 MODIFICATIONS
 829
 830
 831 =cut