C4/Templates.pm

   1 package C4::Templates;
   2
   3 use strict;
   4 use warnings;
   5 use Carp;
   6 use CGI;
   7
   8 # Copyright 2009 Chris Cormack and The Koha Dev Team
   9 #
  10 # This file is part of Koha.
  11 #
  12 # Koha is free software; you can redistribute it and/or modify it under the
  13 # terms of the GNU General Public License as published by the Free Software
  14 # Foundation; either version 2 of the License, or (at your option) any later
  15 # version.
  16 #
  17 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  18 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  19 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  20 #
  21 # You should have received a copy of the GNU General Public License along with
  22 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  23 # Suite 330, Boston, MA  02111-1307 USA
  24
  25 =head1 NAME
  26
  27     Koha::Templates - Object for manipulating templates for use with Koha
  28
  29 =cut
  30
  31 use base qw(Class::Accessor);
  32 use Template;
  33 use Template::Constants qw( :debug );
  34
  35 use C4::Context;
  36
  37 __PACKAGE__->mk_accessors(qw( theme lang filename htdocs interface vars));
  38
  39 sub new {
  40     my $class     = shift;
  41     my $interface = shift;
  42     my $filename  = shift;
  43     my $tmplbase  = shift;
  44     my $htdocs;
  45     if ( $interface ne "intranet" ) {
  46         $htdocs = C4::Context->config('opachtdocs');
  47     }
  48     else {
  49         $htdocs = C4::Context->config('intrahtdocs');
  50     }
  51
  52     my ( $theme, $lang ) = themelanguage( $htdocs, $tmplbase, $interface );
  53     my $template = Template->new(
  54         {
  55             EVAL_PERL    => 1,
  56             ABSOLUTE     => 1,
  57             INCLUDE_PATH => "$htdocs/$theme/$lang/includes",
  58             FILTERS      => {},
  59
  60         }
  61     ) or die Template->error();
  62     my $self = {
  63         TEMPLATE => $template,
  64         VARS     => {},
  65     };
  66     bless $self, $class;
  67     $self->theme($theme);
  68     $self->lang($lang);
  69     $self->filename($filename);
  70     $self->htdocs($htdocs);
  71     $self->interface($interface);
  72     $self->{VARS}->{"test"} = "value";
  73     return $self;
  74
  75 }
  76
  77 sub output {
  78     my $self = shift;
  79     my $vars = shift;
  80
  81 #    my $file = $self->htdocs . '/' . $self->theme .'/'.$self->lang.'/'.$self->filename;
  82     my $template = $self->{TEMPLATE};
  83     if ( $self->interface eq 'intranet' ) {
  84         $vars->{themelang} = '/intranet-tmpl';
  85     }
  86     else {
  87         $vars->{themelang} = '/opac-tmpl';
  88     }
  89     $vars->{lang} = $self->lang;
  90     $vars->{themelang} .= '/' . $self->theme . '/' . $self->lang;
  91     $vars->{yuipath} =
  92       ( C4::Context->preference("yuipath") eq "local"
  93         ? $vars->{themelang} . "/lib/yui"
  94         : C4::Context->preference("yuipath") );
  95     $vars->{interface} =
  96       ( $self->{interface} ne 'intranet' ? '/opac-tmpl' : '/intranet-tmpl' );
  97     $vars->{theme} = $self->theme;
  98     $vars->{opaccolorstylesheet} =
  99       C4::Context->preference('opaccolorstylesheet');
 100     $vars->{opacsmallimage} = C4::Context->preference('opacsmallimage');
 101     $vars->{opacstylesheet} = C4::Context->preference('opacstylesheet');
 102
 103     # add variables set via param to $vars for processing
 104     # and clean any utf8 mess
 105     for my $k ( keys %{ $self->{VARS} } ) {
 106         $vars->{$k} = $self->{VARS}->{$k};
 107         if (ref($vars->{$k}) eq 'ARRAY'){
 108             utf8_arrayref($vars->{$k});
 109         }
 110         elsif (ref($vars->{$k}) eq 'HASH'){
 111             utf8_hashref($vars->{$k});
 112         }
 113         else {
 114             utf8::encode($vars->{$k}) if utf8::is_utf8($vars->{$k});
 115         }
 116     }
 117     my $data;
 118 #    binmode( STDOUT, ":utf8" );
 119     $template->process( $self->filename, $vars, \$data )
 120       || die "Template process failed: ", $template->error();
 121     return $data;
 122 }
 123
 124 sub utf8_arrayref {
 125     my $arrayref = shift;
 126     foreach my $element (@$arrayref){
 127         if (ref($element) eq 'ARRAY'){
 128             utf8_arrayref($element);
 129             next;
 130         }
 131         if (ref($element) eq 'HASH'){
 132             utf8_hashref($element);
 133             next;
 134         }
 135         utf8::encode($element) if utf8::is_utf8($element);
 136     }
 137 }
 138
 139 sub utf8_hashref {
 140     my $hashref = shift;
 141     for my $key (keys %{$hashref}){
 142         if (ref($hashref->{$key}) eq 'ARRAY'){
 143             utf8_arrayref($hashref->{$key});
 144             next;
 145         }
 146         if (ref($hashref->{$key}) eq 'HASH'){
 147             utf8_hashref($hashref->{$key});
 148             next;
 149         }
 150         utf8::encode($hashref->{$key}) if utf8::is_utf8($hashref->{$key});
 151     }
 152 }
 153
 154
 155 # FIXME - this is a horrible hack to cache
 156 # the current known-good language, temporarily
 157 # put in place to resolve bug 4403.  It is
 158 # used only by C4::XSLT::XSLTParse4Display;
 159 # the language is set via the usual call
 160 # to themelanguage.
 161 my $_current_language = 'en';
 162
 163 sub _current_language {
 164     return $_current_language;
 165 }
 166
 167 sub themelanguage {
 168     my ( $htdocs, $tmpl, $interface ) = @_;
 169     my $query = new CGI;
 170
 171     # Set some defaults for language and theme
 172     # First, check the user's preferences
 173     my $lang;
 174
 175     # But, if there's a cookie set, obey it
 176     $lang = $query->cookie('KohaOpacLanguage')
 177       if ( defined $query and $query->cookie('KohaOpacLanguage') );
 178
 179     # Fall back to English
 180     my @languages;
 181     if ( $interface eq 'intranet' ) {
 182         @languages = split ",", C4::Context->preference("language");
 183     }
 184     else {
 185         @languages = split ",", C4::Context->preference("opaclanguages");
 186     }
 187     if ($lang) {
 188         @languages = ( $lang, @languages );
 189     }
 190     else {
 191         $lang = $languages[0] || 'en';
 192     }
 193     my $theme = 'prog'; # in the event of theme failure default to 'prog' -fbcit
 194     my @themes;
 195     if ( $interface eq "intranet" ) {
 196         @themes = split " ", C4::Context->preference("template");
 197     }
 198     else {
 199         @themes = split " ", C4::Context->preference("opacthemes");
 200     }
 201
 202  # searches through the themes and languages. First template it find it returns.
 203  # Priority is for getting the theme right.
 204   THEME:
 205     foreach my $th (@themes) {
 206         foreach my $la (@languages) {
 207             if ( -e "$htdocs/$th/$la/modules/$tmpl" ) {
 208                 $theme = $th;
 209                 $lang  = $la;
 210                 last THEME;
 211             }
 212             last unless $la =~ /[-_]/;
 213         }
 214     }
 215     $_current_language = $lang;  # FIXME part of bad hack to paper over bug 4403
 216     return ( $theme, $lang );
 217 }
 218
 219 # wrapper method to allow easier transition from HTML template pro to Template Toolkit
 220 sub param {
 221     my $self = shift;
 222     while (@_) {
 223         my $key = shift;
 224         my $val = shift;
 225         if    ( ref($val) eq 'ARRAY' && !scalar @$val ) { $val = undef; }
 226         elsif ( ref($val) eq 'HASH'  && !scalar %$val ) { $val = undef; }
 227         $self->{VARS}->{$key} = $val;
 228     }
 229 }
 230
 231 1;
 232