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File:C4/XSLT.pm
Coverage:23.3%

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1package C4::XSLT;
2# Copyright (C) 2006 LibLime
3# <jmf at liblime dot com>
4# Parts Copyright Katrin Fischer 2011
5# Parts Copyright ByWater Solutions 2011
6#
7# This file is part of Koha.
8#
9# Koha is free software; you can redistribute it and/or modify it under the
10# terms of the GNU General Public License as published by the Free Software
11# Foundation; either version 2 of the License, or (at your option) any later
12# version.
13#
14# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
15# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
16# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License along
19# with Koha; if not, write to the Free Software Foundation, Inc.,
20# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21
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use strict;
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use warnings;
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use C4::Context;
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use C4::Branch;
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use C4::Items;
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use C4::Koha;
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use C4::Biblio;
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use C4::Circulation;
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use C4::Reserves;
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use Encode;
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use XML::LibXML;
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use XML::LibXSLT;
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use vars qw($VERSION @ISA @EXPORT);
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38BEGIN {
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    require Exporter;
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    $VERSION = 0.03;
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    @ISA = qw(Exporter);
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    @EXPORT = qw(
43        &XSLTParse4Display
44    );
45}
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=head1 NAME

C4::XSLT - Functions for displaying XSLT-generated content

=head1 FUNCTIONS

=head2 transformMARCXML4XSLT

Replaces codes with authorized values in a MARC::Record object

=cut
58
59sub transformMARCXML4XSLT {
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    my ($biblionumber, $record) = @_;
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    my $frameworkcode = GetFrameworkCode($biblionumber) || '';
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    my $tagslib = &GetMarcStructure(1,$frameworkcode);
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    my @fields;
64    # FIXME: wish there was a better way to handle exceptions
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    eval {
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        @fields = $record->fields();
67    };
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    if ($@) { warn "PROBLEM WITH RECORD"; next; }
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    my $av = getAuthorisedValues4MARCSubfields($frameworkcode);
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    foreach my $tag ( keys %$av ) {
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        foreach my $field ( $record->field( $tag ) ) {
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            if ( $av->{ $tag } ) {
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                my @new_subfields = ();
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                for my $subfield ( $field->subfields() ) {
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                    my ( $letter, $value ) = @$subfield;
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                    $value = GetAuthorisedValueDesc( $tag, $letter, $value, '', $tagslib )
77                        if $av->{ $tag }->{ $letter };
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                    push( @new_subfields, $letter, $value );
79                }
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                $field ->replace_with( MARC::Field->new(
81                    $tag,
82                    $field->indicator(1),
83                    $field->indicator(2),
84                    @new_subfields
85                ) );
86            }
87        }
88    }
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    return $record;
90}
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=head2 getAuthorisedValues4MARCSubfields

Returns a ref of hash of ref of hash for tag -> letter controled by authorised values

=cut
97
98# Cache for tagfield-tagsubfield to decode per framework.
99# Should be preferably be placed in Koha-core...
100my %authval_per_framework;
101
102sub getAuthorisedValues4MARCSubfields {
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    my ($frameworkcode) = @_;
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    unless ( $authval_per_framework{ $frameworkcode } ) {
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        my $dbh = C4::Context->dbh;
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        my $sth = $dbh->prepare("SELECT DISTINCT tagfield, tagsubfield
107                                 FROM marc_subfield_structure
108                                 WHERE authorised_value IS NOT NULL
109                                   AND authorised_value!=''
110                                   AND frameworkcode=?");
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        $sth->execute( $frameworkcode );
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        my $av = { };
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        while ( my ( $tag, $letter ) = $sth->fetchrow() ) {
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            $av->{ $tag }->{ $letter } = 1;
115        }
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        $authval_per_framework{ $frameworkcode } = $av;
117    }
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    return $authval_per_framework{ $frameworkcode };
119}
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121my $stylesheet;
122
123sub XSLTParse4Display {
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    my ( $biblionumber, $orig_record, $xsl_suffix, $interface, $fixamps, $hidden_items ) = @_;
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    $interface = 'opac' unless $interface;
126    # grab the XML, run it through our stylesheet, push it out to the browser
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    my $record = transformMARCXML4XSLT($biblionumber, $orig_record);
128    #return $record->as_formatted();
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    my $itemsxml = buildKohaItemsNamespace($biblionumber, $hidden_items);
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    my $xmlrecord = $record->as_xml(C4::Context->preference('marcflavour'));
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    my $sysxml = "<sysprefs>\n";
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    foreach my $syspref ( qw/ hidelostitems OPACURLOpenInNewWindow
133                              DisplayOPACiconsXSLT URLLinkText viewISBD
134                              OPACBaseURL TraceCompleteSubfields
135                              UseAuthoritiesForTracings TraceSubjectSubdivisions
136                              Display856uAsImage OPACDisplay856uAsImage
137                              UseControlNumber
138                              AlternateHoldingsField AlternateHoldingsSeparator / )
139    {
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        my $sp = C4::Context->preference( $syspref );
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        next unless defined($sp);
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        $sysxml .= "<syspref name=\"$syspref\">$sp</syspref>\n";
143    }
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    $sysxml .= "</sysprefs>\n";
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    $xmlrecord =~ s/\<\/record\>/$itemsxml$sysxml\<\/record\>/;
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    if ($fixamps) { # We need to correct the ampersand entities that Zebra outputs
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        $xmlrecord =~ s/\&amp;amp;/\&amp;/g;
148    }
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    $xmlrecord =~ s/\& /\&amp\; /;
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    $xmlrecord =~ s/\&amp\;amp\; /\&amp\; /;
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    my $parser = XML::LibXML->new();
153    # don't die when you find &, >, etc
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    $parser->recover_silently(0);
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    my $source = $parser->parse_string($xmlrecord);
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    unless ( $stylesheet ) {
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        my $xslt = XML::LibXSLT->new();
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        my $xslfile;
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        if ($interface eq 'intranet') {
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            $xslfile = C4::Context->config('intrahtdocs') .
161                      '/' . C4::Context->preference("template") .
162                      '/' . C4::Templates::_current_language() .
163                      '/xslt/' .
164                      C4::Context->preference('marcflavour') .
165                      "slim2intranet$xsl_suffix.xsl";
166        } else {
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            $xslfile = C4::Context->config('opachtdocs') .
168                      '/' . C4::Context->preference("opacthemes") .
169                      '/' . C4::Templates::_current_language() .
170                      '/xslt/' .
171                      C4::Context->preference('marcflavour') .
172                      "slim2OPAC$xsl_suffix.xsl";
173        }
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        my $style_doc = $parser->parse_file($xslfile);
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        $stylesheet = $xslt->parse_stylesheet($style_doc);
176    }
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    my $results = $stylesheet->transform($source);
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    my $newxmlrecord = $stylesheet->output_string($results);
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    return $newxmlrecord;
180}
181
182sub buildKohaItemsNamespace {
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    my ($biblionumber, $hidden_items) = @_;
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    my @items = C4::Items::GetItemsInfo($biblionumber);
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    if ($hidden_items && @$hidden_items) {
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        my %hi = map {$_ => 1} @$hidden_items;
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        @items = grep { !$hi{$_->{itemnumber}} } @items;
189    }
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    my $branches = GetBranches();
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    my $itemtypes = GetItemTypes();
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    my $xml = '';
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    for my $item (@items) {
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        my $status;
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        my ( $transfertwhen, $transfertfrom, $transfertto ) = C4::Circulation::GetTransfers($item->{itemnumber});
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        my ( $reservestatus, $reserveitem, undef ) = C4::Reserves::CheckReserves($item->{itemnumber});
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        if ( $itemtypes->{ $item->{itype} }->{notforloan} || $item->{notforloan} || $item->{onloan} || $item->{wthdrawn} || $item->{itemlost} || $item->{damaged} ||
201             (defined $transfertwhen && $transfertwhen ne '') || $item->{itemnotforloan} || (defined $reservestatus && $reservestatus eq "Waiting") ){
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            if ( $item->{notforloan} < 0) {
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                $status = "On order";
204            }
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            if ( $item->{itemnotforloan} > 0 || $item->{notforloan} > 0 || $itemtypes->{ $item->{itype} }->{notforloan} == 1 ) {
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                $status = "reference";
207            }
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            if ($item->{onloan}) {
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                $status = "Checked out";
210            }
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            if ( $item->{wthdrawn}) {
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                $status = "Withdrawn";
213            }
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            if ($item->{itemlost}) {
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                $status = "Lost";
216            }
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            if ($item->{damaged}) {
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                $status = "Damaged";
219            }
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            if (defined $transfertwhen && $transfertwhen ne '') {
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                $status = 'In transit';
222            }
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            if (defined $reservestatus && $reservestatus eq "Waiting") {
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                $status = 'Waiting';
225            }
226        } else {
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            $status = "available";
228        }
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        my $homebranch = $item->{homebranch}? xml_escape($branches->{$item->{homebranch}}->{'branchname'}):'';
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            my $itemcallnumber = xml_escape($item->{itemcallnumber});
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        $xml.= "<item><homebranch>$homebranch</homebranch>".
232                "<status>$status</status>".
233                "<itemcallnumber>".$itemcallnumber."</itemcallnumber>"
234        . "</item>";
235
236    }
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    $xml = "<items xmlns=\"http://www.koha-community.org/items\">".$xml."</items>";
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    return $xml;
239}
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