C4/XSLT.pm

   1 package 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 # Parts Copyright Biblibre 2012
   7 #
   8 # This file is part of Koha.
   9 #
  10 # Koha is free software; you can redistribute it and/or modify it under the
  11 # terms of the GNU General Public License as published by the Free Software
  12 # Foundation; either version 2 of the License, or (at your option) any later
  13 # version.
  14 #
  15 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  16 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  17 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License along
  20 # with Koha; if not, write to the Free Software Foundation, Inc.,
  21 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22
  23 use strict;
  24 use warnings;
  25
  26 use C4::Context;
  27 use C4::Branch;
  28 use C4::Items;
  29 use C4::Koha;
  30 use C4::Biblio;
  31 use C4::Circulation;
  32 use C4::Reserves;
  33 use Encode;
  34 use XML::LibXML;
  35 use XML::LibXSLT;
  36 use LWP::Simple;
  37
  38 use vars qw($VERSION @ISA @EXPORT);
  39
  40 BEGIN {
  41     require Exporter;
  42     $VERSION = 3.07.00.049;
  43     @ISA = qw(Exporter);
  44     @EXPORT = qw(
  45         &XSLTParse4Display
  46         &GetURI
  47     );
  48 }
  49
  50 =head1 NAME
  51
  52 C4::XSLT - Functions for displaying XSLT-generated content
  53
  54 =head1 FUNCTIONS
  55
  56 =head2 GetURI
  57
  58 GetURI file and returns the xslt as a string
  59
  60 =cut
  61
  62 sub GetURI {
  63     my ($uri) = @_;
  64     my $string;
  65     $string = get $uri ;
  66     return $string;
  67 }
  68
  69 =head2 transformMARCXML4XSLT
  70
  71 Replaces codes with authorized values in a MARC::Record object
  72
  73 =cut
  74
  75 sub transformMARCXML4XSLT {
  76     my ($biblionumber, $record) = @_;
  77     my $frameworkcode = GetFrameworkCode($biblionumber) || '';
  78     my $tagslib = &GetMarcStructure(1,$frameworkcode);
  79     my @fields;
  80     # FIXME: wish there was a better way to handle exceptions
  81     eval {
  82         @fields = $record->fields();
  83     };
  84     if ($@) { warn "PROBLEM WITH RECORD"; next; }
  85     my $av = getAuthorisedValues4MARCSubfields($frameworkcode);
  86     foreach my $tag ( keys %$av ) {
  87         foreach my $field ( $record->field( $tag ) ) {
  88             if ( $av->{ $tag } ) {
  89                 my @new_subfields = ();
  90                 for my $subfield ( $field->subfields() ) {
  91                     my ( $letter, $value ) = @$subfield;
  92                     $value = GetAuthorisedValueDesc( $tag, $letter, $value, '', $tagslib )
  93                         if $av->{ $tag }->{ $letter };
  94                     push( @new_subfields, $letter, $value );
  95                 }
  96                 $field ->replace_with( MARC::Field->new(
  97                     $tag,
  98                     $field->indicator(1),
  99                     $field->indicator(2),
 100                     @new_subfields
 101                 ) );
 102             }
 103         }
 104     }
 105     return $record;
 106 }
 107
 108 =head2 getAuthorisedValues4MARCSubfields
 109
 110 Returns a ref of hash of ref of hash for tag -> letter controled by authorised values
 111
 112 =cut
 113
 114 # Cache for tagfield-tagsubfield to decode per framework.
 115 # Should be preferably be placed in Koha-core...
 116 my %authval_per_framework;
 117
 118 sub getAuthorisedValues4MARCSubfields {
 119     my ($frameworkcode) = @_;
 120     unless ( $authval_per_framework{ $frameworkcode } ) {
 121         my $dbh = C4::Context->dbh;
 122         my $sth = $dbh->prepare("SELECT DISTINCT tagfield, tagsubfield
 123                                  FROM marc_subfield_structure
 124                                  WHERE authorised_value IS NOT NULL
 125                                    AND authorised_value!=''
 126                                    AND frameworkcode=?");
 127         $sth->execute( $frameworkcode );
 128         my $av = { };
 129         while ( my ( $tag, $letter ) = $sth->fetchrow() ) {
 130             $av->{ $tag }->{ $letter } = 1;
 131         }
 132         $authval_per_framework{ $frameworkcode } = $av;
 133     }
 134     return $authval_per_framework{ $frameworkcode };
 135 }
 136
 137 my $stylesheet;
 138
 139 sub _get_best_default_xslt_filename {
 140     my ($htdocs, $theme, $lang, $base_xslfile) = @_;
 141
 142     my @candidates = (
 143         "$htdocs/$theme/$lang/xslt/${base_xslfile}", # exact match
 144         "$htdocs/$theme/en/xslt/${base_xslfile}",    # if not, preferred theme in English
 145         "$htdocs/prog/$lang/xslt/${base_xslfile}",   # if not, 'prog' theme in preferred language
 146         "$htdocs/prog/en/xslt/${base_xslfile}",      # otherwise, prog theme in English; should always
 147                                                      # exist
 148     );
 149     my $xslfilename;
 150     foreach my $filename (@candidates) {
 151         $xslfilename = $filename;
 152         if (-f $filename) {
 153             last; # we have a winner!
 154         }
 155     }
 156     return $xslfilename;
 157 }
 158
 159 sub XSLTParse4Display {
 160     my ( $biblionumber, $orig_record, $xslsyspref, $fixamps, $hidden_items ) = @_;
 161     my $xslfilename = C4::Context->preference($xslsyspref);
 162     if ( $xslfilename =~ /^\s*"?default"?\s*$/i ) {
 163         my $htdocs;
 164         my $theme;
 165         my $lang = C4::Templates::_current_language();
 166         my $xslfile;
 167         if ($xslsyspref eq "XSLTDetailsDisplay") {
 168             $htdocs  = C4::Context->config('intrahtdocs');
 169             $theme   = C4::Context->preference("template");
 170             $xslfile = C4::Context->preference('marcflavour') .
 171                        "slim2intranetDetail.xsl";
 172         } elsif ($xslsyspref eq "XSLTResultsDisplay") {
 173             $htdocs  = C4::Context->config('intrahtdocs');
 174             $theme   = C4::Context->preference("template");
 175             $xslfile = C4::Context->preference('marcflavour') .
 176                         "slim2intranetResults.xsl";
 177         } elsif ($xslsyspref eq "OPACXSLTDetailsDisplay") {
 178             $htdocs  = C4::Context->config('opachtdocs');
 179             $theme   = C4::Context->preference("opacthemes");
 180             $xslfile = C4::Context->preference('marcflavour') .
 181                        "slim2OPACDetail.xsl";
 182         } elsif ($xslsyspref eq "OPACXSLTResultsDisplay") {
 183             $htdocs  = C4::Context->config('opachtdocs');
 184             $theme   = C4::Context->preference("opacthemes");
 185             $xslfile = C4::Context->preference('marcflavour') .
 186                        "slim2OPACResults.xsl";
 187         }
 188         $xslfilename = _get_best_default_xslt_filename($htdocs, $theme, $lang, $xslfile);
 189     }
 190
 191     if ( $xslfilename =~ m/\{langcode\}/ ) {
 192         my $lang = C4::Templates::_current_language();
 193         $xslfilename =~ s/\{langcode\}/$lang/;
 194     }
 195
 196     # grab the XML, run it through our stylesheet, push it out to the browser
 197     my $record = transformMARCXML4XSLT($biblionumber, $orig_record);
 198     #return $record->as_formatted();
 199     my $itemsxml  = buildKohaItemsNamespace($biblionumber, $hidden_items);
 200     my $xmlrecord = $record->as_xml(C4::Context->preference('marcflavour'));
 201     my $sysxml = "<sysprefs>\n";
 202     foreach my $syspref ( qw/ hidelostitems OPACURLOpenInNewWindow
 203                               DisplayOPACiconsXSLT URLLinkText viewISBD
 204                               OPACBaseURL TraceCompleteSubfields UseICU
 205                               UseAuthoritiesForTracings TraceSubjectSubdivisions
 206                               Display856uAsImage OPACDisplay856uAsImage
 207                               UseControlNumber IntranetBiblioDefaultView BiblioDefaultView
 208                               singleBranchMode OPACItemLocation DisplayIconsXSLT
 209                               AlternateHoldingsField AlternateHoldingsSeparator
 210                               TrackClicks / )
 211     {
 212         my $sp = C4::Context->preference( $syspref );
 213         next unless defined($sp);
 214         $sysxml .= "<syspref name=\"$syspref\">$sp</syspref>\n";
 215     }
 216     $sysxml .= "</sysprefs>\n";
 217     $xmlrecord =~ s/\<\/record\>/$itemsxml$sysxml\<\/record\>/;
 218     if ($fixamps) { # We need to correct the ampersand entities that Zebra outputs
 219         $xmlrecord =~ s/\&amp;amp;/\&amp;/g;
 220     }
 221     $xmlrecord =~ s/\& /\&amp\; /;
 222     $xmlrecord =~ s/\&amp\;amp\; /\&amp\; /;
 223
 224     my $parser = XML::LibXML->new();
 225     # don't die when you find &, >, etc
 226     $parser->recover_silently(0);
 227     my $source = $parser->parse_string($xmlrecord);
 228     unless ( $stylesheet->{$xslfilename} ) {
 229         my $xslt = XML::LibXSLT->new();
 230         my $style_doc;
 231         if ( $xslfilename =~ /^https?:\/\// ) {
 232             my $xsltstring = GetURI($xslfilename);
 233             $style_doc = $parser->parse_string($xsltstring);
 234         } else {
 235             use Cwd;
 236             $style_doc = $parser->parse_file($xslfilename);
 237         }
 238         $stylesheet->{$xslfilename} = $xslt->parse_stylesheet($style_doc);
 239     }
 240     my $results      = $stylesheet->{$xslfilename}->transform($source);
 241     my $newxmlrecord = $stylesheet->{$xslfilename}->output_string($results);
 242     return $newxmlrecord;
 243 }
 244
 245 sub buildKohaItemsNamespace {
 246     my ($biblionumber, $hidden_items) = @_;
 247
 248     my @items = C4::Items::GetItemsInfo($biblionumber);
 249     if ($hidden_items && @$hidden_items) {
 250         my %hi = map {$_ => 1} @$hidden_items;
 251         @items = grep { !$hi{$_->{itemnumber}} } @items;
 252     }
 253
 254     my $shelflocations = GetKohaAuthorisedValues('items.location',GetFrameworkCode($biblionumber), 'opac');
 255     my $ccodes         = GetKohaAuthorisedValues('items.ccode',GetFrameworkCode($biblionumber), 'opac');
 256
 257     my $branches = GetBranches();
 258     my $itemtypes = GetItemTypes();
 259     my $location = "";
 260     my $ccode = "";
 261     my $xml = '';
 262     for my $item (@items) {
 263         my $status;
 264
 265         my ( $transfertwhen, $transfertfrom, $transfertto ) = C4::Circulation::GetTransfers($item->{itemnumber});
 266
 267         my $reservestatus = C4::Reserves::GetReserveStatus( $item->{itemnumber} );
 268
 269         if ( $itemtypes->{ $item->{itype} }->{notforloan} || $item->{notforloan} || $item->{onloan} || $item->{withdrawn} || $item->{itemlost} || $item->{damaged} ||
 270              (defined $transfertwhen && $transfertwhen ne '') || $item->{itemnotforloan} || (defined $reservestatus && $reservestatus eq "Waiting") ){
 271             if ( $item->{notforloan} < 0) {
 272                 $status = "On order";
 273             }
 274             if ( $item->{itemnotforloan} > 0 || $item->{notforloan} > 0 || $itemtypes->{ $item->{itype} }->{notforloan} == 1 ) {
 275                 $status = "reference";
 276             }
 277             if ($item->{onloan}) {
 278                 $status = "Checked out";
 279             }
 280             if ( $item->{withdrawn}) {
 281                 $status = "Withdrawn";
 282             }
 283             if ($item->{itemlost}) {
 284                 $status = "Lost";
 285             }
 286             if ($item->{damaged}) {
 287                 $status = "Damaged";
 288             }
 289             if (defined $transfertwhen && $transfertwhen ne '') {
 290                 $status = 'In transit';
 291             }
 292             if (defined $reservestatus && $reservestatus eq "Waiting") {
 293                 $status = 'Waiting';
 294             }
 295         } else {
 296             $status = "available";
 297         }
 298         my $homebranch = $item->{homebranch}? xml_escape($branches->{$item->{homebranch}}->{'branchname'}):'';
 299         my $holdingbranch = $item->{holdingbranch}? xml_escape($branches->{$item->{holdingbranch}}->{'branchname'}):'';
 300         $location = $item->{location}? xml_escape($shelflocations->{$item->{location}}||$item->{location}):'';
 301         $ccode = $item->{ccode}? xml_escape($ccodes->{$item->{ccode}}||$item->{ccode}):'';
 302         my $itemcallnumber = xml_escape($item->{itemcallnumber});
 303         $xml.= "<item><homebranch>$homebranch</homebranch>".
 304                 "<holdingbranch>$holdingbranch</holdingbranch>".
 305                 "<location>$location</location>".
 306                 "<ccode>$ccode</ccode>".
 307                 "<status>$status</status>".
 308                 "<itemcallnumber>".$itemcallnumber."</itemcallnumber>"
 309         . "</item>";
 310
 311     }
 312     $xml = "<items xmlns=\"http://www.koha-community.org/items\">".$xml."</items>";
 313     return $xml;
 314 }
 315
 316
 317
 318 1;
 319 __END__
 320
 321 =head1 NOTES
 322
 323 =cut
 324
 325 =head1 AUTHOR
 326
 327 Joshua Ferraro <jmf@liblime.com>
 328
 329 =cut