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 XML::LibXML;
  26 use XML::LibXSLT;
  27
  28 use strict;
  29
  30 use vars qw($VERSION @ISA @EXPORT);
  31
  32 BEGIN {
  33     require Exporter;
  34     $VERSION = 0.03;
  35     @ISA = qw(Exporter);
  36     @EXPORT = qw(
  37         &XSLTParse4Display
  38     );
  39 }
  40
  41 =head1 NAME
  42
  43 C4::XSLT - Functions for displaying XSLT-generated content
  44
  45 =head1 FUNCTIONS
  46
  47 =head1 transformMARCXML4XSLT
  48
  49 =head2 replaces codes with authorized values in a MARCXML record
  50
  51 =cut
  52
  53 sub transformMARCXML4XSLT {
  54     my ($biblionumber) = @_;
  55     my $record = GetMarcBiblio($biblionumber);
  56     my $biblio = GetBiblioData($biblionumber);
  57     my $frameworkcode = GetFrameworkCode($biblionumber);
  58     my $tagslib = &GetMarcStructure(1,$frameworkcode);
  59     my @fields;
  60     # FIXME: wish there was a better way to handle exceptions
  61     eval {
  62         @fields = $record->fields();
  63     };
  64     if ($@) { warn "PROBLEM WITH RECORD"; next; }
  65     my $list_of_authvalues = getAuthorisedValues4MARCSubfields($frameworkcode);
  66     for my $authvalue (@$list_of_authvalues) {
  67         for my $field ( $record->field($authvalue->{tagfield}) ) {
  68             my @newSubfields = ();
  69             for my $subfield ( $field->subfields() ) {
  70                 my ($code,$data) = @$subfield;
  71                 unless ($code eq $authvalue->{tagsubfield}) {
  72                     push ( @newSubfields, $code, $data );
  73                 } else {
  74                     my $newvalue = GetAuthorisedValueDesc( $authvalue->{tagfield}, $code, $data, '', $tagslib );
  75                     push ( @newSubfields, $code, $newvalue );
  76                 }
  77             }
  78             my $newField = MARC::Field->new(
  79                 $authvalue->{tagfield},
  80                 $field->indicator(1),
  81                 $field->indicator(2),
  82                 $authvalue->{tagsubfield} => @newSubfields
  83             );
  84             $field->replace_with($newField);
  85         }
  86     }
  87     return $record;
  88 }
  89
  90 =head1 getAuthorisedValues4MARCSubfields
  91
  92 =head2 returns an array of hash refs for authorised value tag/subfield combos for a given framework
  93
  94 =cut
  95
  96 sub getAuthorisedValues4MARCSubfields {
  97     my ($frameworkcode) = @_;
  98     my @results;
  99     my $dbh = C4::Context->dbh;
 100     my $sth = $dbh->prepare("SELECT DISTINCT tagfield,tagsubfield FROM marc_subfield_structure WHERE authorised_value IS NOT NULL AND authorised_value!='' AND frameworkcode=?");
 101     $sth->execute($frameworkcode);
 102     while (my $result = $sth->fetchrow_hashref()) {
 103         push @results, $result;
 104     }
 105     return \@results;
 106 }
 107
 108 sub XSLTParse4Display {
 109     my ($biblionumber,$xslfile) = @_;
 110     # grab the XML, run it through our stylesheet, push it out to the browser
 111     my $record = transformMARCXML4XSLT($biblionumber);
 112     my $itemsxml  = buildKohaItemsNamespace($biblionumber);
 113     my $xmlrecord = $record->as_xml();
 114     $xmlrecord =~ s/\<\/record\>/$itemsxml\<\/record\>/;
 115     my $parser = XML::LibXML->new();
 116     # don't die when you find &, >, etc
 117     $parser->recover_silently(1);
 118     my $xslt = XML::LibXSLT->new();
 119     my $source = $parser->parse_string($xmlrecord);
 120     my $style_doc = $parser->parse_file($xslfile);
 121     my $stylesheet = $xslt->parse_stylesheet($style_doc);
 122     my $results = $stylesheet->transform($source);
 123     my $newxmlrecord = $stylesheet->output_string($results);
 124     return $newxmlrecord;
 125 }
 126
 127 sub buildKohaItemsNamespace {
 128     my ($biblionumber) = @_;
 129     my @items = C4::Items::GetItemsInfo($biblionumber);
 130     my $branches = GetBranches();
 131     my $itemtypes = GetItemTypes();
 132     my $xml;
 133     for my $item (@items) {
 134         my $status;
 135         if ( $item->{notforloan} == -1 || $item->{onloan} || $item->{wthdrawn} || $item->{itemlost} || $item->{damaged}) {
 136             if ( $item->{notforloan} == -1) {
 137                 $status = "On order";
 138             }
 139             if ($item->{onloan}) {
 140                 $status = "Checked out";
 141             }
 142             if ( $item->{wthdrawn}) {
 143                 $status = "Withdrawn";
 144             }
 145             if ($item->{itemlost}) {
 146                 $status = "Lost";
 147             }
 148             if ($item->{damaged}) {
 149                 $status = "Damaged";
 150             }
 151         } else {
 152             $status = "available";
 153         }
 154         $xml.="<item><homebranch>".$branches->{$item->{homebranch}}->{'branchname'}."</homebranch>"."<status>$status</status></item>";
 155     }
 156     return "<items xmlns='http://www.koha.org/items'>".$xml."</items>";
 157 }
 158
 159
 160
 161 1;
 162 __END__
 163
 164 =head1 NOTES
 165
 166 =head1 AUTHOR
 167
 168 Joshua Ferraro <jmf@liblime.com>
 169
 170 =cut