C4/XSLT.pm

   1 package C4::XSLT;
   2
   3 # Copyright (C) 2006 LibLime
   4 # <jmf at liblime dot com>
   5 # Parts Copyright Katrin Fischer 2011
   6 # Parts Copyright ByWater Solutions 2011
   7 # Parts Copyright Biblibre 2012
   8 #
   9 # This file is part of Koha.
  10 #
  11 # Koha is free software; you can redistribute it and/or modify it under the
  12 # terms of the GNU General Public License as published by the Free Software
  13 # Foundation; either version 3 of the License, or (at your option) any later
  14 # version.
  15 #
  16 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  17 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  18 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  19 #
  20 # You should have received a copy of the GNU General Public License along
  21 # with Koha; if not, write to the Free Software Foundation, Inc.,
  22 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23
  24 use strict;
  25 use warnings;
  26
  27 use C4::Context;
  28 use C4::Branch;
  29 use C4::Items;
  30 use C4::Koha;
  31 use C4::Biblio;
  32 use C4::Circulation;
  33 use C4::Reserves;
  34 use Koha::XSLT_Handler;
  35 use Koha::Libraries;
  36
  37 use Encode;
  38
  39 use vars qw(@ISA @EXPORT);
  40
  41 my $engine; #XSLT Handler object
  42 my %authval_per_framework;
  43     # Cache for tagfield-tagsubfield to decode per framework.
  44     # Should be preferably be placed in Koha-core...
  45
  46 BEGIN {
  47     require Exporter;
  48     $VERSION = 3.07.00.049;
  49     @ISA = qw(Exporter);
  50     @EXPORT = qw(
  51         &XSLTParse4Display
  52     );
  53     $engine=Koha::XSLT_Handler->new( { do_not_return_source => 1 } );
  54 }
  55
  56 =head1 NAME
  57
  58 C4::XSLT - Functions for displaying XSLT-generated content
  59
  60 =head1 FUNCTIONS
  61
  62 =head2 transformMARCXML4XSLT
  63
  64 Replaces codes with authorized values in a MARC::Record object
  65 Is only used in this module currently.
  66
  67 =cut
  68
  69 sub transformMARCXML4XSLT {
  70     my ($biblionumber, $record) = @_;
  71     my $frameworkcode = GetFrameworkCode($biblionumber) || '';
  72     my $tagslib = &GetMarcStructure(1,$frameworkcode);
  73     my @fields;
  74     # FIXME: wish there was a better way to handle exceptions
  75     eval {
  76         @fields = $record->fields();
  77     };
  78     if ($@) { warn "PROBLEM WITH RECORD"; next; }
  79     my $av = getAuthorisedValues4MARCSubfields($frameworkcode);
  80     foreach my $tag ( keys %$av ) {
  81         foreach my $field ( $record->field( $tag ) ) {
  82             if ( $av->{ $tag } ) {
  83                 my @new_subfields = ();
  84                 for my $subfield ( $field->subfields() ) {
  85                     my ( $letter, $value ) = @$subfield;
  86                     $value = GetAuthorisedValueDesc( $tag, $letter, $value, '', $tagslib )
  87                         if $av->{ $tag }->{ $letter };
  88                     push( @new_subfields, $letter, $value );
  89                 }
  90                 $field ->replace_with( MARC::Field->new(
  91                     $tag,
  92                     $field->indicator(1),
  93                     $field->indicator(2),
  94                     @new_subfields
  95                 ) );
  96             }
  97         }
  98     }
  99     return $record;
 100 }
 101
 102 =head2 getAuthorisedValues4MARCSubfields
 103
 104 Returns a ref of hash of ref of hash for tag -> letter controlled by authorised values
 105 Is only used in this module currently.
 106
 107 =cut
 108
 109 sub getAuthorisedValues4MARCSubfields {
 110     my ($frameworkcode) = @_;
 111     unless ( $authval_per_framework{ $frameworkcode } ) {
 112         my $dbh = C4::Context->dbh;
 113         my $sth = $dbh->prepare("SELECT DISTINCT tagfield, tagsubfield
 114                                  FROM marc_subfield_structure
 115                                  WHERE authorised_value IS NOT NULL
 116                                    AND authorised_value!=''
 117                                    AND frameworkcode=?");
 118         $sth->execute( $frameworkcode );
 119         my $av = { };
 120         while ( my ( $tag, $letter ) = $sth->fetchrow() ) {
 121             $av->{ $tag }->{ $letter } = 1;
 122         }
 123         $authval_per_framework{ $frameworkcode } = $av;
 124     }
 125     return $authval_per_framework{ $frameworkcode };
 126 }
 127
 128 =head2 XSLTParse4Display
 129
 130 Returns xml for biblionumber and requested XSLT transformation.
 131 Returns undef if the transform fails.
 132
 133 Used in OPAC results and detail, intranet results and detail, list display.
 134 (Depending on the settings of your XSLT preferences.)
 135
 136 The helper function _get_best_default_xslt_filename is used in a unit test.
 137
 138 =cut
 139
 140 sub _get_best_default_xslt_filename {
 141     my ($htdocs, $theme, $lang, $base_xslfile) = @_;
 142
 143     my @candidates = (
 144         "$htdocs/$theme/$lang/xslt/${base_xslfile}", # exact match
 145         "$htdocs/$theme/en/xslt/${base_xslfile}",    # if not, preferred theme in English
 146         "$htdocs/prog/$lang/xslt/${base_xslfile}",   # if not, 'prog' theme in preferred language
 147         "$htdocs/prog/en/xslt/${base_xslfile}",      # otherwise, prog theme in English; should always
 148                                                      # exist
 149     );
 150     my $xslfilename;
 151     foreach my $filename (@candidates) {
 152         $xslfilename = $filename;
 153         if (-f $filename) {
 154             last; # we have a winner!
 155         }
 156     }
 157     return $xslfilename;
 158 }
 159
 160 sub XSLTParse4Display {
 161     my ( $biblionumber, $orig_record, $xslsyspref, $fixamps, $hidden_items ) = @_;
 162     my $xslfilename = C4::Context->preference($xslsyspref);
 163     if ( $xslfilename =~ /^\s*"?default"?\s*$/i ) {
 164         my $htdocs;
 165         my $theme;
 166         my $lang = C4::Languages::getlanguage();
 167         my $xslfile;
 168         if ($xslsyspref eq "XSLTDetailsDisplay") {
 169             $htdocs  = C4::Context->config('intrahtdocs');
 170             $theme   = C4::Context->preference("template");
 171             $xslfile = C4::Context->preference('marcflavour') .
 172                        "slim2intranetDetail.xsl";
 173         } elsif ($xslsyspref eq "XSLTResultsDisplay") {
 174             $htdocs  = C4::Context->config('intrahtdocs');
 175             $theme   = C4::Context->preference("template");
 176             $xslfile = C4::Context->preference('marcflavour') .
 177                         "slim2intranetResults.xsl";
 178         } elsif ($xslsyspref eq "OPACXSLTDetailsDisplay") {
 179             $htdocs  = C4::Context->config('opachtdocs');
 180             $theme   = C4::Context->preference("opacthemes");
 181             $xslfile = C4::Context->preference('marcflavour') .
 182                        "slim2OPACDetail.xsl";
 183         } elsif ($xslsyspref eq "OPACXSLTResultsDisplay") {
 184             $htdocs  = C4::Context->config('opachtdocs');
 185             $theme   = C4::Context->preference("opacthemes");
 186             $xslfile = C4::Context->preference('marcflavour') .
 187                        "slim2OPACResults.xsl";
 188         }
 189         $xslfilename = _get_best_default_xslt_filename($htdocs, $theme, $lang, $xslfile);
 190     }
 191
 192     if ( $xslfilename =~ m/\{langcode\}/ ) {
 193         my $lang = C4::Languages::getlanguage();
 194         $xslfilename =~ s/\{langcode\}/$lang/;
 195     }
 196
 197     # grab the XML, run it through our stylesheet, push it out to the browser
 198     my $record = transformMARCXML4XSLT($biblionumber, $orig_record);
 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                               OPACItemLocation DisplayIconsXSLT
 209                               AlternateHoldingsField AlternateHoldingsSeparator
 210                               TrackClicks opacthemes IdRef / )
 211     {
 212         my $sp = C4::Context->preference( $syspref );
 213         next unless defined($sp);
 214         $sysxml .= "<syspref name=\"$syspref\">$sp</syspref>\n";
 215     }
 216
 217     # singleBranchMode was a system preference, but no longer is
 218     # we can retain it here for compatibility
 219     my $singleBranchMode = Koha::Libraries->search->count == 1;
 220     $sysxml .= "<syspref name=\"singleBranchMode\">$singleBranchMode</syspref>\n";
 221
 222     $sysxml .= "</sysprefs>\n";
 223     $xmlrecord =~ s/\<\/record\>/$itemsxml$sysxml\<\/record\>/;
 224     if ($fixamps) { # We need to correct the HTML entities that Zebra outputs
 225         $xmlrecord =~ s/\&amp;amp;/\&amp;/g;
 226         $xmlrecord =~ s/\&amp\;lt\;/\&lt\;/g;
 227         $xmlrecord =~ s/\&amp\;gt\;/\&gt\;/g;
 228     }
 229     $xmlrecord =~ s/\& /\&amp\; /;
 230     $xmlrecord =~ s/\&amp\;amp\; /\&amp\; /;
 231
 232     #If the xslt should fail, we will return undef (old behavior was
 233     #raw MARC)
 234     #Note that we did set do_not_return_source at object construction
 235     return $engine->transform($xmlrecord, $xslfilename ); #file or URL
 236 }
 237
 238 =head2 buildKohaItemsNamespace
 239
 240 Returns XML for items.
 241 Is only used in this module currently.
 242
 243 =cut
 244
 245 sub buildKohaItemsNamespace {
 246     my ($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     $xml = "<items xmlns=\"http://www.koha-community.org/items\">".$xml."</items>";
 312     return $xml;
 313 }
 314
 315 =head2 engine
 316
 317 Returns reference to XSLT handler object.
 318
 319 =cut
 320
 321 sub engine {
 322     return $engine;
 323 }
 324
 325 1;
 326
 327 __END__
 328
 329 =head1 AUTHOR
 330
 331 Joshua Ferraro <jmf@liblime.com>
 332
 333 Koha Development Team <http://koha-community.org/>
 334
 335 =cut