607 lines
18 KiB
Perl
607 lines
18 KiB
Perl
package C4::Record;
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#
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# Copyright 2006 (C) LibLime
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# Joshua Ferraro <jmf@liblime.com>
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
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# Suite 330, Boston, MA 02111-1307 USA
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#
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#
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use strict;# use warnings; #FIXME: turn off warnings before release
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# please specify in which methods a given module is used
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use MARC::Record; # marc2marcxml, marcxml2marc, html2marc, changeEncoding
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use MARC::File::XML; # marc2marcxml, marcxml2marc, html2marcxml, changeEncoding
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use MARC::Crosswalk::DublinCore; # marc2dcxml
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use Biblio::EndnoteStyle;
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use Unicode::Normalize; # _entity_encode
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use XML::LibXSLT;
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use XML::LibXML;
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use vars qw($VERSION @ISA @EXPORT);
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# set the version for version checking
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$VERSION = 3.00;
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@ISA = qw(Exporter);
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# only export API methods
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@EXPORT = qw(
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&marc2endnote
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&marc2marc
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&marc2marcxml
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&marcxml2marc
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&marc2dcxml
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&marc2modsxml
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&html2marcxml
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&html2marc
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&changeEncoding
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);
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=head1 NAME
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C4::Record - MARC, MARCXML, DC, MODS, XML, etc. Record Management Functions and API
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=head1 SYNOPSIS
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New in Koha 3.x. This module handles all record-related management functions.
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=head1 API (EXPORTED FUNCTIONS)
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=head2 marc2marc - Convert from one flavour of ISO-2709 to another
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=over 4
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my ($error,$newmarc) = marc2marc($marc,$to_flavour,$from_flavour,$encoding);
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Returns an ISO-2709 scalar
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=back
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=cut
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sub marc2marc {
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my ($marc,$to_flavour,$from_flavour,$encoding) = @_;
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my $error = "Feature not yet implemented\n";
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return ($error,$marc);
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}
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=head2 marc2marcxml - Convert from ISO-2709 to MARCXML
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=over 4
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my ($error,$marcxml) = marc2marcxml($marc,$encoding,$flavour);
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Returns a MARCXML scalar
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=over 2
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C<$marc> - an ISO-2709 scalar or MARC::Record object
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C<$encoding> - UTF-8 or MARC-8 [UTF-8]
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C<$flavour> - MARC21 or UNIMARC
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C<$dont_entity_encode> - a flag that instructs marc2marcxml not to entity encode the xml before returning (optional)
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=back
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=back
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=cut
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sub marc2marcxml {
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my ($marc,$encoding,$flavour,$dont_entity_encode) = @_;
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my $error; # the error string
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my $marcxml; # the final MARCXML scalar
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# test if it's already a MARC::Record object, if not, make it one
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my $marc_record_obj;
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if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
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$marc_record_obj = $marc;
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} else { # it's not a MARC::Record object, make it one
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eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
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# conversion to MARC::Record object failed, populate $error
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if ($@) { $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR };
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}
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# only proceed if no errors so far
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unless ($error) {
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# check the record for warnings
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my @warnings = $marc_record_obj->warnings();
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if (@warnings) {
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warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
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foreach my $warn (@warnings) { warn "\t".$warn };
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}
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unless($encoding) {$encoding = "UTF-8"}; # set default encoding
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unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set default MARC flavour
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# attempt to convert the record to MARCXML
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eval { $marcxml = $marc_record_obj->as_xml_record($flavour) }; #handle exceptions
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# record creation failed, populate $error
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if ($@) {
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$error .= "Creation of MARCXML failed:".$MARC::File::ERROR;
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$error .= "Additional information:\n";
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my @warnings = $@->warnings();
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foreach my $warn (@warnings) { $error.=$warn."\n" };
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# record creation was successful
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} else {
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# check the record for warning flags again (warnings() will be cleared already if there was an error, see above block
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@warnings = $marc_record_obj->warnings();
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if (@warnings) {
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warn "\nWarnings encountered while processing ISO-2709 record with title \"".$marc_record_obj->title()."\":\n";
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foreach my $warn (@warnings) { warn "\t".$warn };
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}
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}
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# only proceed if no errors so far
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unless ($error) {
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# entity encode the XML unless instructed not to
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unless ($dont_entity_encode) {
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my ($marcxml_entity_encoded) = _entity_encode($marcxml);
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$marcxml = $marcxml_entity_encoded;
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}
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}
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}
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# return result to calling program
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return ($error,$marcxml);
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}
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=head2 marcxml2marc - Convert from MARCXML to ISO-2709
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=over 4
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my ($error,$marc) = marcxml2marc($marcxml,$encoding,$flavour);
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Returns an ISO-2709 scalar
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=over 2
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C<$marcxml> - a MARCXML record
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C<$encoding> - UTF-8 or MARC-8 [UTF-8]
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C<$flavour> - MARC21 or UNIMARC
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=back
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=back
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=cut
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sub marcxml2marc {
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my ($marcxml,$encoding,$flavour) = @_;
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my $error; # the error string
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my $marc; # the final ISO-2709 scalar
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unless($encoding) {$encoding = "UTF-8"}; # set the default encoding
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unless($flavour) {$flavour = C4::Context->preference("marcflavour")}; # set the default MARC flavour
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# attempt to do the conversion
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eval { $marc = MARC::Record->new_from_xml($marcxml,$encoding,$flavour) }; # handle exceptions
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# record creation failed, populate $error
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if ($@) {$error .="\nCreation of MARCXML Record failed: ".$@;
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$error.=$MARC::File::ERROR if ($MARC::File::ERROR);
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};
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# return result to calling program
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return ($error,$marc);
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}
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=head2 marc2dcxml - Convert from ISO-2709 to Dublin Core
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=over 4
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my ($error,$dcxml) = marc2dcxml($marc,$qualified);
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Returns a DublinCore::Record object, will eventually return a Dublin Core scalar
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FIXME: should return actual XML, not just an object
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=over 2
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C<$marc> - an ISO-2709 scalar or MARC::Record object
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C<$qualified> - specify whether qualified Dublin Core should be used in the input or output [0]
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=back
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=back
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=cut
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sub marc2dcxml {
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my ($marc,$qualified) = @_;
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my $error;
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# test if it's already a MARC::Record object, if not, make it one
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my $marc_record_obj;
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if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
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$marc_record_obj = $marc;
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} else { # it's not a MARC::Record object, make it one
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eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
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# conversion to MARC::Record object failed, populate $error
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if ($@) {
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$error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR;
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}
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}
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my $crosswalk = MARC::Crosswalk::DublinCore->new;
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if ($qualified) {
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$crosswalk = MARC::Crosswalk::DublinCore->new( qualified => 1 );
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}
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my $dcxml = $crosswalk->as_dublincore($marc_record_obj);
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my $dcxmlfinal = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
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$dcxmlfinal .= "<metadata
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xmlns=\"http://example.org/myapp/\"
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xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"
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xsi:schemaLocation=\"http://example.org/myapp/ http://example.org/myapp/schema.xsd\"
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xmlns:dc=\"http://purl.org/dc/elements/1.1/\"
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xmlns:dcterms=\"http://purl.org/dc/terms/\">";
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foreach my $element ( $dcxml->elements() ) {
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$dcxmlfinal.="<"."dc:".$element->name().">".$element->content()."</"."dc:".$element->name().">\n";
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}
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$dcxmlfinal .= "\n</metadata>";
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return ($error,$dcxmlfinal);
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}
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=head2 marc2modsxml - Convert from ISO-2709 to MODS
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=over 4
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my ($error,$modsxml) = marc2modsxml($marc);
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Returns a MODS scalar
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=back
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=cut
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sub marc2modsxml {
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my ($marc) = @_;
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# grab the XML, run it through our stylesheet, push it out to the browser
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my $xmlrecord = marc2marcxml($marc);
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my $xslfile = C4::Context->config('intrahtdocs')."/prog/en/xslt/MARC21slim2MODS3-1.xsl";
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my $parser = XML::LibXML->new();
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my $xslt = XML::LibXSLT->new();
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my $source = $parser->parse_string($xmlrecord);
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my $style_doc = $parser->parse_file($xslfile);
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my $stylesheet = $xslt->parse_stylesheet($style_doc);
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my $results = $stylesheet->transform($source);
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my $newxmlrecord = $stylesheet->output_string($results);
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return ($newxmlrecord);
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}
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sub marc2endnote {
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my ($marc) = @_;
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my $marc_rec_obj = MARC::Record->new_from_usmarc($marc);
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my $f260 = $marc_rec_obj->field('260');
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my $f260a = $f260->subfield('a') if $f260;
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my $f710 = $marc_rec_obj->field('710');
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my $f710a = $f710->subfield('a') if $f710;
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my $f500 = $marc_rec_obj->field('500');
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my $abstract = $f500->subfield('a') if $f500;
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my $fields = {
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DB => C4::Context->preference("LibraryName"),
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Title => $marc_rec_obj->title(),
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Author => $marc_rec_obj->author(),
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Publisher => $f710a,
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City => $f260a,
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Year => $marc_rec_obj->publication_date,
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Abstract => $abstract,
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};
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my $endnote;
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my $style = new Biblio::EndnoteStyle();
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my $template;
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$template.= "DB - DB\n" if C4::Context->preference("LibraryName");
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$template.="T1 - Title\n" if $marc_rec_obj->title();
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$template.="A1 - Author\n" if $marc_rec_obj->author();
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$template.="PB - Publisher\n" if $f710a;
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$template.="CY - City\n" if $f260a;
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$template.="Y1 - Year\n" if $marc_rec_obj->publication_date;
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$template.="AB - Abstract\n" if $abstract;
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my ($text, $errmsg) = $style->format($template, $fields);
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return ($text);
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}
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=head2 html2marcxml
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=over 4
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my ($error,$marcxml) = html2marcxml($tags,$subfields,$values,$indicator,$ind_tag);
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Returns a MARCXML scalar
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this is used in addbiblio.pl and additem.pl to build the MARCXML record from
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the form submission.
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FIXME: this could use some better code documentation
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=back
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=cut
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sub html2marcxml {
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my ($tags,$subfields,$values,$indicator,$ind_tag) = @_;
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my $error;
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# add the header info
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my $marcxml= MARC::File::XML::header(C4::Context->preference('TemplateEncoding'),C4::Context->preference('marcflavour'));
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# some flags used to figure out where in the record we are
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my $prevvalue;
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my $prevtag=-1;
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my $first=1;
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my $j = -1;
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# handle characters that would cause the parser to choke FIXME: is there a more elegant solution?
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for (my $i=0;$i<=@$tags;$i++){
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@$values[$i] =~ s/&/&/g;
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@$values[$i] =~ s/</</g;
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@$values[$i] =~ s/>/>/g;
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@$values[$i] =~ s/"/"/g;
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@$values[$i] =~ s/'/'/g;
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if ((@$tags[$i] ne $prevtag)){
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$j++ unless (@$tags[$i] eq "");
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#warn "IND:".substr(@$indicator[$j],0,1).substr(@$indicator[$j],1,1)." ".@$tags[$i];
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if (!$first){
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$marcxml.="</datafield>\n";
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if ((@$tags[$i] > 10) && (@$values[$i] ne "")){
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my $ind1 = substr(@$indicator[$j],0,1);
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my $ind2 = substr(@$indicator[$j],1,1);
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$marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
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$marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
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$first=0;
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} else {
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$first=1;
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}
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} else {
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if (@$values[$i] ne "") {
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# handle the leader
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if (@$tags[$i] eq "000") {
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$marcxml.="<leader>@$values[$i]</leader>\n";
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$first=1;
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# rest of the fixed fields
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} elsif (@$tags[$i] < 010) { #FIXME: <10 was the way it was, there might even be a better way
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$marcxml.="<controlfield tag=\"@$tags[$i]\">@$values[$i]</controlfield>\n";
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$first=1;
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} else {
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my $ind1 = substr(@$indicator[$j],0,1);
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my $ind2 = substr(@$indicator[$j],1,1);
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$marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
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$marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
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$first=0;
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}
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}
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}
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} else { # @$tags[$i] eq $prevtag
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if (@$values[$i] eq "") {
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} else {
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if ($first){
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my $ind1 = substr(@$indicator[$j],0,1);
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my $ind2 = substr(@$indicator[$j],1,1);
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$marcxml.="<datafield tag=\"@$tags[$i]\" ind1=\"$ind1\" ind2=\"$ind2\">\n";
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$first=0;
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}
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$marcxml.="<subfield code=\"@$subfields[$i]\">@$values[$i]</subfield>\n";
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}
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}
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$prevtag = @$tags[$i];
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}
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$marcxml.= MARC::File::XML::footer();
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#warn $marcxml;
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return ($error,$marcxml);
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}
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=head2 html2marc
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=over 4
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Probably best to avoid using this ... it has some rather striking problems:
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=over 2
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* saves blank subfields
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* subfield order is hardcoded to always start with 'a' for repeatable tags (because it is hardcoded in the addfield routine).
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* only possible to specify one set of indicators for each set of tags (ie, one for all the 650s). (because they were stored in a hash with the tag as the key).
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* the underlying routines didn't support subfield reordering or subfield repeatability.
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=back
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I've left it in here because it could be useful if someone took the time to fix it. -- kados
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=back
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=cut
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sub html2marc {
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my ($dbh,$rtags,$rsubfields,$rvalues,%indicators) = @_;
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my $prevtag = -1;
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my $record = MARC::Record->new();
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# my %subfieldlist=();
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my $prevvalue; # if tag <10
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my $field; # if tag >=10
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for (my $i=0; $i< @$rtags; $i++) {
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# rebuild MARC::Record
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# warn "0=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ";
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if (@$rtags[$i] ne $prevtag) {
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if ($prevtag < 10) {
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if ($prevvalue) {
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if (($prevtag ne '000') && ($prevvalue ne "")) {
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$record->add_fields((sprintf "%03s",$prevtag),$prevvalue);
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} elsif ($prevvalue ne ""){
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$record->leader($prevvalue);
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}
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}
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} else {
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if (($field) && ($field ne "")) {
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$record->add_fields($field);
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}
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}
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$indicators{@$rtags[$i]}.=' ';
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# skip blank tags, I hope this works
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if (@$rtags[$i] eq ''){
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$prevtag = @$rtags[$i];
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undef $field;
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next;
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}
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if (@$rtags[$i] <10) {
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$prevvalue= @$rvalues[$i];
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undef $field;
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} else {
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undef $prevvalue;
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if (@$rvalues[$i] eq "") {
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undef $field;
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} else {
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$field = MARC::Field->new( (sprintf "%03s",@$rtags[$i]), substr($indicators{@$rtags[$i]},0,1),substr($indicators{@$rtags[$i]},1,1), @$rsubfields[$i] => @$rvalues[$i]);
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}
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# warn "1=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ".$field->as_formatted;
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}
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$prevtag = @$rtags[$i];
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} else {
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if (@$rtags[$i] <10) {
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$prevvalue=@$rvalues[$i];
|
|
} else {
|
|
if (length(@$rvalues[$i])>0) {
|
|
$field->add_subfields(@$rsubfields[$i] => @$rvalues[$i]);
|
|
# warn "2=>".@$rtags[$i].@$rsubfields[$i]." = ".@$rvalues[$i].": ".$field->as_formatted;
|
|
}
|
|
}
|
|
$prevtag= @$rtags[$i];
|
|
}
|
|
}
|
|
#}
|
|
# the last has not been included inside the loop... do it now !
|
|
#use Data::Dumper;
|
|
#warn Dumper($field->{_subfields});
|
|
$record->add_fields($field) if (($field) && $field ne "");
|
|
#warn "HTML2MARC=".$record->as_formatted;
|
|
return $record;
|
|
}
|
|
|
|
=head2 changeEncoding - Change the encoding of a record
|
|
|
|
=over 4
|
|
|
|
my ($error, $newrecord) = changeEncoding($record,$format,$flavour,$to_encoding,$from_encoding);
|
|
|
|
Changes the encoding of a record
|
|
|
|
=over 2
|
|
|
|
C<$record> - the record itself can be in ISO-2709, a MARC::Record object, or MARCXML for now (required)
|
|
|
|
C<$format> - MARC or MARCXML (required)
|
|
|
|
C<$flavour> - MARC21 or UNIMARC, if MARC21, it will change the leader (optional) [defaults to Koha system preference]
|
|
|
|
C<$to_encoding> - the encoding you want the record to end up in (optional) [UTF-8]
|
|
|
|
C<$from_encoding> - the encoding the record is currently in (optional, it will probably be able to tell unless there's a problem with the record)
|
|
|
|
=back
|
|
|
|
FIXME: the from_encoding doesn't work yet
|
|
|
|
FIXME: better handling for UNIMARC, it should allow management of 100 field
|
|
|
|
FIXME: shouldn't have to convert to and from xml/marc just to change encoding someone needs to re-write MARC::Record's 'encoding' method to actually alter the encoding rather than just changing the leader
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
sub changeEncoding {
|
|
my ($record,$format,$flavour,$to_encoding,$from_encoding) = @_;
|
|
my $newrecord;
|
|
my $error;
|
|
unless($flavour) {$flavour = C4::Context->preference("marcflavour")};
|
|
unless($to_encoding) {$to_encoding = "UTF-8"};
|
|
|
|
# ISO-2709 Record (MARC21 or UNIMARC)
|
|
if (lc($format) =~ /^marc$/o) {
|
|
# if we're converting encoding of an ISO2709 file, we need to roundtrip through XML
|
|
# because MARC::Record doesn't directly provide us with an encoding method
|
|
# It's definitely less than idea and should be fixed eventually - kados
|
|
my $marcxml; # temporary storage of MARCXML scalar
|
|
($error,$marcxml) = marc2marcxml($record,$to_encoding,$flavour);
|
|
unless ($error) {
|
|
($error,$newrecord) = marcxml2marc($marcxml,$to_encoding,$flavour);
|
|
}
|
|
|
|
# MARCXML Record
|
|
} elsif (lc($format) =~ /^marcxml$/o) { # MARCXML Record
|
|
my $marc;
|
|
($error,$marc) = marcxml2marc($record,$to_encoding,$flavour);
|
|
unless ($error) {
|
|
($error,$newrecord) = marc2marcxml($record,$to_encoding,$flavour);
|
|
}
|
|
} else {
|
|
$error.="Unsupported record format:".$format;
|
|
}
|
|
return ($error,$newrecord);
|
|
}
|
|
|
|
=head1 INTERNAL FUNCTIONS
|
|
|
|
=head2 _entity_encode - Entity-encode an array of strings
|
|
|
|
=over 4
|
|
|
|
my ($entity_encoded_string) = _entity_encode($string);
|
|
|
|
or
|
|
|
|
my (@entity_encoded_strings) = _entity_encode(@strings);
|
|
|
|
Entity-encode an array of strings
|
|
|
|
=back
|
|
|
|
=cut
|
|
|
|
sub _entity_encode {
|
|
my @strings = @_;
|
|
my @strings_entity_encoded;
|
|
foreach my $string (@strings) {
|
|
my $nfc_string = NFC($string);
|
|
$nfc_string =~ s/([\x{0080}-\x{fffd}])/sprintf('&#x%X;',ord($1))/sgoe;
|
|
push @strings_entity_encoded, $nfc_string;
|
|
}
|
|
return @strings_entity_encoded;
|
|
}
|
|
|
|
END { } # module clean-up code here (global destructor)
|
|
1;
|
|
__END__
|
|
|
|
=head1 AUTHOR
|
|
|
|
Joshua Ferraro <jmf@liblime.com>
|
|
|
|
=head1 MODIFICATIONS
|
|
|
|
|
|
=cut
|