C4/Templates.pm

   1 package C4::Templates;
   2
   3 use strict;
   4 use warnings;
   5 use Carp;
   6 use CGI;
   7 use List::Util qw/first/;
   8
   9 # Copyright 2009 Chris Cormack and The Koha Dev Team
  10 #
  11 # This file is part of Koha.
  12 #
  13 # Koha is free software; you can redistribute it and/or modify it under the
  14 # terms of the GNU General Public License as published by the Free Software
  15 # Foundation; either version 2 of the License, or (at your option) any later
  16 # version.
  17 #
  18 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  19 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  20 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  21 #
  22 # You should have received a copy of the GNU General Public License along with
  23 # Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
  24 # Suite 330, Boston, MA  02111-1307 USA
  25
  26 =head1 NAME
  27
  28     Koha::Templates - Object for manipulating templates for use with Koha
  29
  30 =cut
  31
  32 use base qw(Class::Accessor);
  33 use Template;
  34 use Template::Constants qw( :debug );
  35 use C4::Languages qw(getTranslatedLanguages get_bidi regex_lang_subtags language_get_description accept_language );
  36
  37 use C4::Context;
  38
  39 __PACKAGE__->mk_accessors(qw( theme lang filename htdocs interface vars));
  40
  41
  42
  43 sub new {
  44     my $class     = shift;
  45     my $interface = shift;
  46     my $filename  = shift;
  47     my $tmplbase  = shift;
  48     my $query     = @_? shift: undef;
  49     my $htdocs;
  50     if ( $interface ne "intranet" ) {
  51         $htdocs = C4::Context->config('opachtdocs');
  52     }
  53     else {
  54         $htdocs = C4::Context->config('intrahtdocs');
  55     }
  56
  57     my ($theme, $lang)= themelanguage( $htdocs, $tmplbase, $interface, $query);
  58     my $template = Template->new(
  59         {   EVAL_PERL    => 1,
  60             ABSOLUTE     => 1,
  61             INCLUDE_PATH => [
  62                 "$htdocs/$theme/$lang/includes",
  63                 "$htdocs/$theme/en/includes"
  64             ],
  65             FILTERS => {},
  66         }
  67     ) or die Template->error();
  68     my $self = {
  69         TEMPLATE => $template,
  70         VARS     => {},
  71     };
  72     bless $self, $class;
  73     $self->theme($theme);
  74     $self->lang($lang);
  75     $self->filename($filename);
  76     $self->htdocs($htdocs);
  77     $self->interface($interface);
  78     $self->{VARS}->{"test"} = "value";
  79     return $self;
  80
  81 }
  82
  83 sub output {
  84     my $self = shift;
  85     my $vars = shift;
  86
  87 #    my $file = $self->htdocs . '/' . $self->theme .'/'.$self->lang.'/'.$self->filename;
  88     my $template = $self->{TEMPLATE};
  89     if ( $self->interface eq 'intranet' ) {
  90         $vars->{themelang} = '/intranet-tmpl';
  91     }
  92     else {
  93         $vars->{themelang} = '/opac-tmpl';
  94     }
  95     $vars->{lang} = $self->lang;
  96     $vars->{themelang} .= '/' . $self->theme . '/' . $self->lang;
  97     $vars->{yuipath} =
  98       ( C4::Context->preference("yuipath") eq "local"
  99         ? $vars->{themelang} . "/lib/yui"
 100         : C4::Context->preference("yuipath") );
 101     $vars->{interface} =
 102       ( $self->{interface} ne 'intranet' ? '/opac-tmpl' : '/intranet-tmpl' );
 103     $vars->{theme} = $self->theme;
 104     $vars->{opaccolorstylesheet} =
 105       C4::Context->preference('opaccolorstylesheet');
 106     $vars->{opacsmallimage} = C4::Context->preference('opacsmallimage');
 107     $vars->{opacstylesheet} = C4::Context->preference('opacstylesheet');
 108
 109     # add variables set via param to $vars for processing
 110     # and clean any utf8 mess
 111     for my $k ( keys %{ $self->{VARS} } ) {
 112         $vars->{$k} = $self->{VARS}->{$k};
 113         if (ref($vars->{$k}) eq 'ARRAY'){
 114             utf8_arrayref($vars->{$k});
 115         }
 116         elsif (ref($vars->{$k}) eq 'HASH'){
 117             utf8_hashref($vars->{$k});
 118         }
 119         else {
 120             utf8::encode($vars->{$k}) if utf8::is_utf8($vars->{$k});
 121         }
 122     }
 123     my $data;
 124 #    binmode( STDOUT, ":utf8" );
 125     $template->process( $self->filename, $vars, \$data )
 126       || die "Template process failed: ", $template->error();
 127     return $data;
 128 }
 129
 130 sub utf8_arrayref {
 131     my $arrayref = shift;
 132     foreach my $element (@$arrayref){
 133         if (ref($element) eq 'ARRAY'){
 134             utf8_arrayref($element);
 135             next;
 136         }
 137         if (ref($element) eq 'HASH'){
 138             utf8_hashref($element);
 139             next;
 140         }
 141         utf8::encode($element) if utf8::is_utf8($element);
 142     }
 143 }
 144
 145 sub utf8_hashref {
 146     my $hashref = shift;
 147     for my $key (keys %{$hashref}){
 148         if (ref($hashref->{$key}) eq 'ARRAY'){
 149             utf8_arrayref($hashref->{$key});
 150             next;
 151         }
 152         if (ref($hashref->{$key}) eq 'HASH'){
 153             utf8_hashref($hashref->{$key});
 154             next;
 155         }
 156         utf8::encode($hashref->{$key}) if utf8::is_utf8($hashref->{$key});
 157     }
 158 }
 159
 160
 161 # FIXME - this is a horrible hack to cache
 162 # the current known-good language, temporarily
 163 # put in place to resolve bug 4403.  It is
 164 # used only by C4::XSLT::XSLTParse4Display;
 165 # the language is set via the usual call
 166 # to themelanguage.
 167 my $_current_language = 'en';
 168
 169 sub _current_language {
 170     return $_current_language;
 171 }
 172
 173
 174 # wrapper method to allow easier transition from HTML template pro to Template Toolkit
 175 sub param {
 176     my $self = shift;
 177     while (@_) {
 178         my $key = shift;
 179         my $val = shift;
 180         if    ( ref($val) eq 'ARRAY' && !scalar @$val ) { $val = undef; }
 181         elsif ( ref($val) eq 'HASH'  && !scalar %$val ) { $val = undef; }
 182         if ( $key ) {
 183             $self->{VARS}->{$key} = $val;
 184         } else {
 185             warn "Problem = a value of $val has been passed to param without key";
 186         }
 187     }
 188 }
 189
 190
 191 =head1 NAME
 192
 193 C4::Templates - Functions for managing templates
 194
 195 =head1 FUNCTIONS
 196
 197 =cut
 198
 199 # FIXME: this is a quick fix to stop rc1 installing broken
 200 # Still trying to figure out the correct fix.
 201 my $path = C4::Context->config('intrahtdocs') . "/prog/en/includes/";
 202
 203 #---------------------------------------------------------------------------------------------------------
 204 # FIXME - POD
 205
 206 sub _get_template_file {
 207     my ($tmplbase, $interface, $query) = @_;
 208
 209     my $is_intranet = $interface eq 'intranet';
 210     my $htdocs = C4::Context->config($is_intranet ? 'intrahtdocs' : 'opachtdocs');
 211     my ($theme, $lang) = themelanguage($htdocs, $tmplbase, $interface, $query);
 212     my $opacstylesheet = C4::Context->preference('opacstylesheet');
 213
 214     # if the template doesn't exist, load the English one as a last resort
 215     my $filename = "$htdocs/$theme/$lang/modules/$tmplbase";
 216     unless (-f $filename) {
 217         $lang = 'en';
 218         $filename = "$htdocs/$theme/$lang/modules/$tmplbase";
 219     }
 220     return ($htdocs, $theme, $lang, $filename);
 221 }
 222
 223
 224 sub gettemplate {
 225     my ( $tmplbase, $interface, $query ) = @_;
 226     ($query) or warn "no query in gettemplate";
 227     my $path = C4::Context->preference('intranet_includes') || 'includes';
 228     my $opacstylesheet = C4::Context->preference('opacstylesheet');
 229     $tmplbase =~ s/\.tmpl$/.tt/;
 230     my ($htdocs, $theme, $lang, $filename)
 231        =  _get_template_file($tmplbase, $interface, $query);
 232     my $template = C4::Templates->new($interface, $filename, $tmplbase, $query);
 233     my $is_intranet = $interface eq 'intranet';
 234     my $themelang =
 235         ($is_intranet ? '/intranet-tmpl' : '/opac-tmpl') .
 236         "/$theme/$lang";
 237     $template->param(
 238         themelang => $themelang,
 239         yuipath   => C4::Context->preference("yuipath") eq "local"
 240                      ? "$themelang/lib/yui"
 241                      : C4::Context->preference("yuipath"),
 242         interface => $is_intranet ? '/intranet-tmpl' : '/opac-tmpl',
 243         theme     => $theme,
 244         lang      => $lang
 245     );
 246
 247     # Bidirectionality
 248     my $current_lang = regex_lang_subtags($lang);
 249     my $bidi;
 250     $bidi = get_bidi($current_lang->{script}) if $current_lang->{script};
 251     # Languages
 252     my $languages_loop = getTranslatedLanguages($interface,$theme,$lang);
 253     my $num_languages_enabled = 0;
 254     foreach my $lang (@$languages_loop) {
 255         foreach my $sublang (@{ $lang->{'sublanguages_loop'} }) {
 256             $num_languages_enabled++ if $sublang->{enabled};
 257          }
 258     }
 259     $template->param(
 260             languages_loop       => $languages_loop,
 261             bidi                 => $bidi,
 262             one_language_enabled => ($num_languages_enabled <= 1) ? 1 : 0, # deal with zero enabled langs as well
 263     ) unless @$languages_loop<2;
 264
 265     return $template;
 266 }
 267
 268
 269 #---------------------------------------------------------------------------------------------------------
 270 # FIXME - POD
 271 sub themelanguage {
 272     my ($htdocs, $tmpl, $interface, $query) = @_;
 273     ($query) or warn "no query in themelanguage";
 274
 275     # Select a language based on cookie, syspref available languages & browser
 276     my $is_intranet = $interface eq 'intranet';
 277     my @languages = split(",", C4::Context->preference(
 278         $is_intranet ? 'language' : 'opaclanguages'));
 279     my $lang;
 280     $lang = $query->cookie('KohaOpacLanguage')
 281         if defined $query and $query->cookie('KohaOpacLanguage');
 282     unless ($lang) {
 283         my $http_accept_language = $ENV{ HTTP_ACCEPT_LANGUAGE };
 284         $lang = accept_language( $http_accept_language,
 285             getTranslatedLanguages($interface,'prog') );
 286     }
 287     # Ignore a lang not selected in sysprefs
 288     $lang = undef  unless first { $_ eq $lang } @languages;
 289     # Fall back to English if necessary
 290     $lang = 'en' unless $lang;
 291
 292     my @themes = split(" ", C4::Context->preference(
 293         $is_intranet ? "template" : "opacthemes" ));
 294     push @themes, 'prog';
 295
 296     # Try to find first theme for the selected language
 297     for my $theme (@themes) {
 298         if ( -e "$htdocs/$theme/$lang/modules/$tmpl" ) {
 299             $_current_language = $lang;
 300             return ($theme, $lang)
 301         }
 302     }
 303     # Otherwise, return prog theme in English 'en'
 304     return ('prog', 'en');
 305 }
 306
 307
 308 sub setlanguagecookie {
 309     my ( $query, $language, $uri ) = @_;
 310     my $cookie = $query->cookie(
 311         -name    => 'KohaOpacLanguage',
 312         -value   => $language,
 313         -expires => ''
 314     );
 315     print $query->redirect(
 316         -uri    => $uri,
 317         -cookie => $cookie
 318     );
 319 }
 320
 321 sub getlanguagecookie {
 322     my ($query) = @_;
 323     my $lang;
 324     if ($query->cookie('KohaOpacLanguage')){
 325         $lang = $query->cookie('KohaOpacLanguage') ;
 326     }else{
 327         $lang = $ENV{HTTP_ACCEPT_LANGUAGE};
 328
 329     }
 330     $lang = substr($lang, 0, 2);
 331
 332     return $lang;
 333 }
 334
 335 1;
 336