Koha/C4/XSLT.pm
2008-04-25 15:28:14 -05:00

170 lines
5.2 KiB
Perl

package C4::XSLT;
# Copyright (C) 2006 LibLime
# <jmf at liblime dot com>
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use C4::Context;
use C4::Branch;
use C4::Items;
use C4::Koha;
use C4::Biblio;
use XML::LibXML;
use XML::LibXSLT;
use strict;
use vars qw($VERSION @ISA @EXPORT);
BEGIN {
require Exporter;
$VERSION = 0.03;
@ISA = qw(Exporter);
@EXPORT = qw(
&XSLTParse4Display
);
}
=head1 NAME
C4::XSLT - Functions for displaying XSLT-generated content
=head1 FUNCTIONS
=head1 transformMARCXML4XSLT
=head2 replaces codes with authorized values in a MARCXML record
=cut
sub transformMARCXML4XSLT {
my ($biblionumber) = @_;
my $record = GetMarcBiblio($biblionumber);
my $biblio = GetBiblioData($biblionumber);
my $frameworkcode = GetFrameworkCode($biblionumber);
my $tagslib = &GetMarcStructure(1,$frameworkcode);
my @fields;
# FIXME: wish there was a better way to handle exceptions
eval {
@fields = $record->fields();
};
if ($@) { warn "PROBLEM WITH RECORD"; next; }
my $list_of_authvalues = getAuthorisedValues4MARCSubfields($frameworkcode);
for my $authvalue (@$list_of_authvalues) {
for my $field ( $record->field($authvalue->{tagfield}) ) {
my @newSubfields = ();
for my $subfield ( $field->subfields() ) {
my ($code,$data) = @$subfield;
unless ($code eq $authvalue->{tagsubfield}) {
push ( @newSubfields, $code, $data );
} else {
my $newvalue = GetAuthorisedValueDesc( $authvalue->{tagfield}, $code, $data, '', $tagslib );
push ( @newSubfields, $code, $newvalue );
}
}
my $newField = MARC::Field->new(
$authvalue->{tagfield},
$field->indicator(1),
$field->indicator(2),
$authvalue->{tagsubfield} => @newSubfields
);
$field->replace_with($newField);
}
}
return $record;
}
=head1 getAuthorisedValues4MARCSubfields
=head2 returns an array of hash refs for authorised value tag/subfield combos for a given framework
=cut
sub getAuthorisedValues4MARCSubfields {
my ($frameworkcode) = @_;
my @results;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT DISTINCT tagfield,tagsubfield FROM marc_subfield_structure WHERE authorised_value IS NOT NULL AND authorised_value!='' AND frameworkcode=?");
$sth->execute($frameworkcode);
while (my $result = $sth->fetchrow_hashref()) {
push @results, $result;
}
return \@results;
}
sub XSLTParse4Display {
my ($biblionumber,$xslfile) = @_;
# grab the XML, run it through our stylesheet, push it out to the browser
my $record = transformMARCXML4XSLT($biblionumber);
my $itemsxml = buildKohaItemsNamespace($biblionumber);
my $xmlrecord = $record->as_xml();
$xmlrecord =~ s/\<\/record\>/$itemsxml\<\/record\>/;
my $parser = XML::LibXML->new();
# don't die when you find &, >, etc
$parser->recover_silently(1);
my $xslt = XML::LibXSLT->new();
my $source = $parser->parse_string($xmlrecord);
my $style_doc = $parser->parse_file($xslfile);
my $stylesheet = $xslt->parse_stylesheet($style_doc);
my $results = $stylesheet->transform($source);
my $newxmlrecord = $stylesheet->output_string($results);
return $newxmlrecord;
}
sub buildKohaItemsNamespace {
my ($biblionumber) = @_;
my @items = C4::Items::GetItemsInfo($biblionumber);
my $branches = GetBranches();
my $itemtypes = GetItemTypes();
my $xml;
for my $item (@items) {
my $status;
if ( $item->{notforloan} == -1 || $item->{onloan} || $item->{wthdrawn} || $item->{itemlost} || $item->{damaged}) {
if ( $item->{notforloan} == -1) {
$status = "On order";
}
if ($item->{onloan}) {
$status = "Checked out";
}
if ( $item->{wthdrawn}) {
$status = "Withdrawn";
}
if ($item->{itemlost}) {
$status = "Lost";
}
if ($item->{damaged}) {
$status = "Damaged";
}
} else {
$status = "available";
}
$xml.="<item><homebranch>".$branches->{$item->{homebranch}}->{'branchname'}."</homebranch>"."<status>$status</status></item>";
}
return "<items xmlns='http://www.koha.org/items'>".$xml."</items>";
}
1;
__END__
=head1 NOTES
=head1 AUTHOR
Joshua Ferraro <jmf@liblime.com>
=cut