C4/XSLT.pm

   1 package C4::XSLT;
   2 # Copyright (C) 2006 LibLime
   3 # <jmf at liblime dot com>
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it under the
   8 # terms of the GNU General Public License as published by the Free Software
   9 # Foundation; either version 2 of the License, or (at your option) any later
  10 # version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  13 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  14 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along with
  17 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  18 # Suite 330, Boston, MA  02111-1307 USA
  19
  20 use C4::Context;
  21 use C4::Branch;
  22 use C4::Items;
  23 use C4::Koha;
  24 use C4::Biblio;
  25 use C4::Circulation;
  26 use XML::LibXML;
  27 use XML::LibXSLT;
  28
  29 use strict;
  30
  31 use vars qw($VERSION @ISA @EXPORT);
  32
  33 BEGIN {
  34     require Exporter;
  35     $VERSION = 0.03;
  36     @ISA = qw(Exporter);
  37     @EXPORT = qw(
  38         &XSLTParse4Display
  39     );
  40 }
  41
  42 =head1 NAME
  43
  44 C4::XSLT - Functions for displaying XSLT-generated content
  45
  46 =head1 FUNCTIONS
  47
  48 =head1 transformMARCXML4XSLT
  49
  50 =head2 replaces codes with authorized values in a MARCXML record
  51
  52 =cut
  53
  54 sub transformMARCXML4XSLT {
  55     my ($biblionumber) = @_;
  56     my $record = GetMarcBiblio($biblionumber);
  57     my $biblio = GetBiblioData($biblionumber);
  58     my $frameworkcode = GetFrameworkCode($biblionumber);
  59     my $tagslib = &GetMarcStructure(1,$frameworkcode);
  60     my @fields;
  61     # FIXME: wish there was a better way to handle exceptions
  62     eval {
  63         @fields = $record->fields();
  64     };
  65     if ($@) { warn "PROBLEM WITH RECORD"; next; }
  66     my $list_of_authvalues = getAuthorisedValues4MARCSubfields($frameworkcode);
  67     for my $authvalue (@$list_of_authvalues) {
  68         for my $field ( $record->field($authvalue->{tagfield}) ) {
  69             my @newSubfields = ();
  70             for my $subfield ( $field->subfields() ) {
  71                 my ($code,$data) = @$subfield;
  72                 unless ($code eq $authvalue->{tagsubfield}) {
  73                     push ( @newSubfields, $code, $data );
  74                 } else {
  75                     my $newvalue = GetAuthorisedValueDesc( $authvalue->{tagfield}, $code, $data, '', $tagslib );
  76                     push ( @newSubfields, $code, $newvalue );
  77                 }
  78             }
  79             my $newField = MARC::Field->new(
  80                 $authvalue->{tagfield},
  81                 $field->indicator(1),
  82                 $field->indicator(2),
  83                 $authvalue->{tagsubfield} => @newSubfields
  84             );
  85             $field->replace_with($newField);
  86         }
  87     }
  88     return $record;
  89 }
  90
  91 =head1 getAuthorisedValues4MARCSubfields
  92
  93 =head2 returns an array of hash refs for authorised value tag/subfield combos for a given framework
  94
  95 =cut
  96
  97 sub getAuthorisedValues4MARCSubfields {
  98     my ($frameworkcode) = @_;
  99     my @results;
 100     my $dbh = C4::Context->dbh;
 101     my $sth = $dbh->prepare("SELECT DISTINCT tagfield,tagsubfield FROM marc_subfield_structure WHERE authorised_value IS NOT NULL AND authorised_value!='' AND frameworkcode=?");
 102     $sth->execute($frameworkcode);
 103     while (my $result = $sth->fetchrow_hashref()) {
 104         push @results, $result;
 105     }
 106     return \@results;
 107 }
 108
 109 my $stylesheet;
 110
 111 sub XSLTParse4Display {
 112     my ($biblionumber,$xslfile) = @_;
 113     # grab the XML, run it through our stylesheet, push it out to the browser
 114     my $record = transformMARCXML4XSLT($biblionumber);
 115     my $itemsxml  = buildKohaItemsNamespace($biblionumber);
 116     my $xmlrecord = $record->as_xml();
 117     $xmlrecord =~ s/\<\/record\>/$itemsxml\<\/record\>/;
 118     my $parser = XML::LibXML->new();
 119     # don't die when you find &, >, etc
 120     $parser->recover_silently(1);
 121     my $source = $parser->parse_string($xmlrecord);
 122     unless ( $stylesheet ) {
 123         my $xslt = XML::LibXSLT->new();
 124         my $style_doc = $parser->parse_file($xslfile);
 125         $stylesheet = $xslt->parse_stylesheet($style_doc);
 126     }
 127     my $results = $stylesheet->transform($source);
 128     my $newxmlrecord = $stylesheet->output_string($results);
 129     return $newxmlrecord;
 130 }
 131
 132 sub buildKohaItemsNamespace {
 133     my ($biblionumber) = @_;
 134     my @items = C4::Items::GetItemsInfo($biblionumber);
 135     my $branches = GetBranches();
 136     my $itemtypes = GetItemTypes();
 137     my $xml;
 138     for my $item (@items) {
 139         my $status;
 140         my ( $transfertwhen, $transfertfrom, $transfertto ) = C4::Circulation::GetTransfers($item->{itemnumber});
 141         if ( $item->{notforloan} == -1 || $item->{onloan} || $item->{wthdrawn} || $item->{itemlost} || $item->{damaged} ||
 142              ($transfertwhen ne '') || $item->{itemnotforloan} ) {
 143             if ( $item->{notforloan} == -1) {
 144                 $status = "On order";
 145             }
 146             if ( $item->{itemnotforloan} ) {
 147                 $status = "Not for loan";
 148             }
 149             if ($item->{onloan}) {
 150                 $status = "Checked out";
 151             }
 152             if ( $item->{wthdrawn}) {
 153                 $status = "Withdrawn";
 154             }
 155             if ($item->{itemlost}) {
 156                 $status = "Lost";
 157             }
 158             if ($item->{damaged}) {
 159                 $status = "Damaged";
 160             }
 161             if ($transfertwhen ne '') {
 162                 $status = 'In transit';
 163             }
 164         } else {
 165             $status = "available";
 166         }
 167         $xml.="<item><homebranch>".$branches->{$item->{homebranch}}->{'branchname'}."</homebranch>".
 168                 "<status>$status</status>".
 169                 "<itemcallnumber>".$item->{'itemcallnumber'}."</itemcallnumber></item>";
 170
 171     }
 172     return "<items xmlns='http://www.koha.org/items'>".$xml."</items>";
 173 }
 174
 175
 176
 177 1;
 178 __END__
 179
 180 =head1 NOTES
 181
 182 =head1 AUTHOR
 183
 184 Joshua Ferraro <jmf@liblime.com>
 185
 186 =cut