C4/Languages.pm

   1 package C4::Languages;
   2
   3 # Copyright 2006 (C) LibLime
   4 # Joshua Ferraro <jmf@liblime.com>
   5 # Portions Copyright 2009 Chris Cormack and the Koha Dev Team
   6 # This file is part of Koha.
   7 #
   8 # Koha is free software; you can redistribute it and/or modify it under the
   9 # terms of the GNU General Public License as published by the Free Software
  10 # Foundation; either version 2 of the License, or (at your option) any later
  11 # version.
  12 #
  13 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  14 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  15 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License along
  18 # with Koha; if not, write to the Free Software Foundation, Inc.,
  19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20
  21
  22 use strict;
  23 #use warnings; FIXME - Bug 2505
  24 use Carp;
  25 use C4::Context;
  26 use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $DEBUG);
  27
  28 eval {
  29     if (C4::Context->ismemcached) {
  30         require Memoize::Memcached;
  31         import Memoize::Memcached qw(memoize_memcached);
  32
  33         memoize_memcached('getTranslatedLanguages', memcached => C4::Context->memcached);
  34         memoize_memcached('getFrameworkLanguages' , memcached => C4::Context->memcached);
  35         memoize_memcached('getAllLanguages',        memcached => C4::Context->memcached);
  36     }
  37 };
  38
  39 BEGIN {
  40     $VERSION = 3.07.00.049;
  41     require Exporter;
  42     @ISA    = qw(Exporter);
  43     @EXPORT = qw(
  44         &getFrameworkLanguages
  45         &getTranslatedLanguages
  46         &getLanguages
  47         &getAllLanguages
  48     );
  49     @EXPORT_OK = qw(getFrameworkLanguages getTranslatedLanguages getAllLanguages getLanguages get_bidi regex_lang_subtags language_get_description accept_language);
  50     $DEBUG = 0;
  51 }
  52
  53 =head1 NAME
  54
  55 C4::Languages - Perl Module containing language list functions for Koha
  56
  57 =head1 SYNOPSIS
  58
  59 use C4::Languages;
  60
  61 =head1 DESCRIPTION
  62
  63 =cut
  64
  65 =head1 FUNCTIONS
  66
  67 =head2 getFrameworkLanguages
  68
  69 Returns a reference to an array of hashes:
  70
  71  my $languages = getFrameworkLanguages();
  72  for my $language(@$languages) {
  73     print "$language->{language_code}\n"; # language code in iso 639-2
  74     print "$language->{language_name}\n"; # language name in native script
  75     print "$language->{language_locale_name}\n"; # language name in current locale
  76  }
  77
  78 =cut
  79
  80 sub getFrameworkLanguages {
  81     # get a hash with all language codes, names, and locale names
  82     my $all_languages = getAllLanguages();
  83     my @languages;
  84
  85     # find the available directory names
  86     my $dir=C4::Context->config('intranetdir')."/installer/data/";
  87     opendir (MYDIR,$dir);
  88     my @listdir= grep { !/^\.|CVS/ && -d "$dir/$_"} readdir(MYDIR);
  89     closedir MYDIR;
  90
  91     # pull out all data for the dir names that exist
  92     for my $dirname (@listdir) {
  93         for my $language_set (@$all_languages) {
  94
  95             if ($dirname eq $language_set->{language_code}) {
  96                 push @languages, {
  97                     'language_code'=>$dirname,
  98                     'language_description'=>$language_set->{language_description},
  99                     'native_descrition'=>$language_set->{language_native_description} }
 100             }
 101         }
 102     }
 103     return \@languages;
 104 }
 105
 106 =head2 getTranslatedLanguages
 107
 108 Returns a reference to an array of hashes:
 109
 110  my $languages = getTranslatedLanguages();
 111  print "Available translated languages:\n";
 112  for my $language(@$trlanguages) {
 113     print "$language->{language_code}\n"; # language code in iso 639-2
 114     print "$language->{language_name}\n"; # language name in native script
 115     print "$language->{language_locale_name}\n"; # language name in current locale
 116  }
 117
 118 =cut
 119
 120 sub getTranslatedLanguages {
 121     my ($interface, $theme, $current_language, $which) = @_;
 122     my $htdocs;
 123     my @languages;
 124     my @enabled_languages;
 125
 126     if ($interface && $interface eq 'opac' ) {
 127         @enabled_languages = split ",", C4::Context->preference('opaclanguages');
 128         $htdocs = C4::Context->config('opachtdocs');
 129         if ( $theme and -d "$htdocs/$theme" ) {
 130             (@languages) = _get_language_dirs($htdocs,$theme);
 131         }
 132         else {
 133             for my $theme ( _get_themes('opac') ) {
 134                 push @languages, _get_language_dirs($htdocs,$theme);
 135             }
 136         }
 137     }
 138     elsif ($interface && $interface eq 'intranet' ) {
 139         @enabled_languages = split ",", C4::Context->preference('language');
 140         $htdocs = C4::Context->config('intrahtdocs');
 141         if ( $theme and -d "$htdocs/$theme" ) {
 142             @languages = _get_language_dirs($htdocs,$theme);
 143         }
 144         else {
 145             foreach my $theme ( _get_themes('intranet') ) {
 146                 push @languages, _get_language_dirs($htdocs,$theme);
 147             }
 148         }
 149     }
 150     else {
 151         @enabled_languages = split ",", C4::Context->preference('opaclanguages');
 152         my $htdocs = C4::Context->config('intrahtdocs');
 153         foreach my $theme ( _get_themes('intranet') ) {
 154             push @languages, _get_language_dirs($htdocs,$theme);
 155         }
 156         $htdocs = C4::Context->config('opachtdocs');
 157         foreach my $theme ( _get_themes('opac') ) {
 158             push @languages, _get_language_dirs($htdocs,$theme);
 159         }
 160         my %seen;
 161         $seen{$_}++ for @languages;
 162         @languages = keys %seen;
 163     }
 164     return _build_languages_arrayref(\@languages,$current_language,\@enabled_languages);
 165 }
 166
 167 =head2 getAllLanguages
 168
 169 Returns a reference to an array of hashes:
 170
 171  my $alllanguages = getAllLanguages();
 172  print "Available translated languages:\n";
 173  for my $language(@$alllanguages) {
 174     print "$language->{language_code}\n";
 175     print "$language->{language_name}\n";
 176     print "$language->{language_locale_name}\n";
 177  }
 178
 179 This routine is a wrapper for getLanguages().
 180
 181 =cut
 182
 183 sub getAllLanguages {
 184     return getLanguages(shift);
 185 }
 186
 187 =head2 getLanguages
 188
 189     my $lang_arrayref = getLanguages([$lang[, $isFiltered]]);
 190
 191 Returns a reference to an array of hashes of languages.
 192
 193 - If no parameter is passed to the function, it returns english languages names
 194 - If a $lang parameter conforming to RFC4646 syntax is passed, the function returns languages names translated in $lang
 195   If a language name is not translated in $lang in database, the function returns english language name
 196 - If $isFiltered is set to true, only the detail of the languages selected in system preferences AdvanceSearchLanguages is returned.
 197
 198 =cut
 199
 200 sub getLanguages {
 201     my $lang = shift;
 202     my $isFiltered = shift;
 203
 204     my @languages_loop;
 205     my $dbh=C4::Context->dbh;
 206     my $default_language = 'en';
 207     my $current_language = $default_language;
 208     my $language_list = $isFiltered ? C4::Context->preference("AdvancedSearchLanguages") : undef;
 209     if ($lang) {
 210         $current_language = regex_lang_subtags($lang)->{'language'};
 211     }
 212     my $sth = $dbh->prepare('SELECT * FROM language_subtag_registry WHERE type=\'language\'');
 213     $sth->execute();
 214     while (my $language_subtag_registry = $sth->fetchrow_hashref) {
 215         my $desc;
 216         # check if language name is stored in current language
 217         my $sth4= $dbh->prepare("SELECT description FROM language_descriptions WHERE type='language' AND subtag =? AND lang = ?");
 218         $sth4->execute($language_subtag_registry->{subtag},$current_language);
 219         while (my $language_desc = $sth4->fetchrow_hashref) {
 220              $desc=$language_desc->{description};
 221         }
 222         my $sth2= $dbh->prepare("SELECT * FROM language_descriptions LEFT JOIN language_rfc4646_to_iso639 on language_rfc4646_to_iso639.rfc4646_subtag = language_descriptions.subtag WHERE type='language' AND subtag =? AND language_descriptions.lang = ?");
 223         if ($desc) {
 224             $sth2->execute($language_subtag_registry->{subtag},$current_language);
 225         }
 226         else {
 227             $sth2->execute($language_subtag_registry->{subtag},$default_language);
 228         }
 229         my $sth3 = $dbh->prepare("SELECT description FROM language_descriptions WHERE type='language' AND subtag=? AND lang=?");
 230         # add the correct description info
 231         while (my $language_descriptions = $sth2->fetchrow_hashref) {
 232             $sth3->execute($language_subtag_registry->{subtag},$language_subtag_registry->{subtag});
 233             my $native_description;
 234             while (my $description = $sth3->fetchrow_hashref) {
 235                 $native_description = $description->{description};
 236             }
 237
 238             # fill in the ISO6329 code
 239             $language_subtag_registry->{iso639_2_code} = $language_descriptions->{iso639_2_code};
 240             # fill in the native description of the language, as well as the current language's translation of that if it exists
 241             if ($native_description) {
 242                 $language_subtag_registry->{language_description} = $native_description;
 243                 $language_subtag_registry->{language_description}.=" ($language_descriptions->{description})" if $language_descriptions->{description};
 244             }
 245             else {
 246                 $language_subtag_registry->{language_description} = $language_descriptions->{description};
 247             }
 248         }
 249         if ( !$language_list || index (  $language_list, $language_subtag_registry->{ iso639_2_code } ) >= 0) {
 250             push @languages_loop, $language_subtag_registry;
 251         }
 252     }
 253     return \@languages_loop;
 254 }
 255
 256 =head2 _get_themes
 257
 258 Internal function, returns an array of all available themes.
 259
 260   (@themes) = &_get_themes('opac');
 261   (@themes) = &_get_themes('intranet');
 262
 263 =cut
 264
 265 sub _get_themes {
 266     my $interface = shift;
 267     my $htdocs;
 268     my @themes;
 269     if ( $interface eq 'intranet' ) {
 270         $htdocs = C4::Context->config('intrahtdocs');
 271     }
 272     else {
 273         $htdocs = C4::Context->config('opachtdocs');
 274     }
 275     opendir D, "$htdocs";
 276     my @dirlist = readdir D;
 277     foreach my $directory (@dirlist) {
 278         # if there's an en dir, it's a valid theme
 279         -d "$htdocs/$directory/en" and push @themes, $directory;
 280     }
 281     return @themes;
 282 }
 283
 284 =head2 _get_language_dirs
 285
 286 Internal function, returns an array of directory names, excluding non-language directories
 287
 288 =cut
 289
 290 sub _get_language_dirs {
 291     my ($htdocs,$theme) = @_;
 292     my @lang_strings;
 293     opendir D, "$htdocs/$theme";
 294     for my $lang_string ( readdir D ) {
 295         next if $lang_string =~/^\./;
 296         next if $lang_string eq 'all';
 297         next if $lang_string =~/png$/;
 298         next if $lang_string =~/js$/;
 299         next if $lang_string =~/css$/;
 300         next if $lang_string =~/CVS$/;
 301         next if $lang_string =~/\.txt$/i;     #Don't read the readme.txt !
 302         next if $lang_string =~/img|images|famfam|js|less|lib|sound|pdf/;
 303         push @lang_strings, $lang_string;
 304     }
 305         return (@lang_strings);
 306 }
 307
 308 =head2 _build_languages_arrayref
 309
 310 Internal function for building the ref to array of hashes
 311
 312 FIXME: this could be rewritten and simplified using map
 313
 314 =cut
 315
 316 sub _build_languages_arrayref {
 317         my ($translated_languages,$current_language,$enabled_languages) = @_;
 318         my @translated_languages = @$translated_languages;
 319         my @languages_loop; # the final reference to an array of hashrefs
 320         my @enabled_languages = @$enabled_languages;
 321         # how many languages are enabled, if one, take note, some contexts won't need to display it
 322         my %seen_languages; # the language tags we've seen
 323         my %found_languages;
 324         my $language_groups;
 325         my $track_language_groups;
 326         my $current_language_regex = regex_lang_subtags($current_language);
 327         # Loop through the translated languages
 328         for my $translated_language (@translated_languages) {
 329             # separate the language string into its subtag types
 330             my $language_subtags_hashref = regex_lang_subtags($translated_language);
 331
 332             # is this language string 'enabled'?
 333             for my $enabled_language (@enabled_languages) {
 334                 #warn "Checking out if $translated_language eq $enabled_language";
 335                 $language_subtags_hashref->{'enabled'} = 1 if $translated_language eq $enabled_language;
 336             }
 337
 338             # group this language, key by langtag
 339             $language_subtags_hashref->{'sublanguage_current'} = 1 if $translated_language eq $current_language;
 340             $language_subtags_hashref->{'rfc4646_subtag'} = $translated_language;
 341             $language_subtags_hashref->{'native_description'} = language_get_description($language_subtags_hashref->{language},$language_subtags_hashref->{language},'language');
 342             $language_subtags_hashref->{'script_description'} = language_get_description($language_subtags_hashref->{script},$language_subtags_hashref->{'language'},'script');
 343             $language_subtags_hashref->{'region_description'} = language_get_description($language_subtags_hashref->{region},$language_subtags_hashref->{'language'},'region');
 344             $language_subtags_hashref->{'variant_description'} = language_get_description($language_subtags_hashref->{variant},$language_subtags_hashref->{'language'},'variant');
 345             $track_language_groups->{$language_subtags_hashref->{'language'}}++;
 346             push ( @{ $language_groups->{$language_subtags_hashref->{language}} }, $language_subtags_hashref );
 347         }
 348         # $key is a language subtag like 'en'
 349         while( my ($key, $value) = each %$language_groups) {
 350
 351             # is this language group enabled? are any of the languages within it enabled?
 352             my $enabled;
 353             for my $enabled_language (@enabled_languages) {
 354                 my $regex_enabled_language = regex_lang_subtags($enabled_language);
 355                 $enabled = 1 if $key eq $regex_enabled_language->{language};
 356             }
 357             push @languages_loop,  {
 358                             # this is only use if there is one
 359                             rfc4646_subtag => @$value[0]->{rfc4646_subtag},
 360                             native_description => language_get_description($key,$key,'language'),
 361                             language => $key,
 362                             sublanguages_loop => $value,
 363                             plural => $track_language_groups->{$key} >1 ? 1 : 0,
 364                             current => $current_language_regex->{language} eq $key ? 1 : 0,
 365                             group_enabled => $enabled,
 366                            };
 367         }
 368         return \@languages_loop;
 369 }
 370
 371 sub language_get_description {
 372     my ($script,$lang,$type) = @_;
 373     my $dbh = C4::Context->dbh;
 374     my $desc;
 375     my $sth = $dbh->prepare("SELECT description FROM language_descriptions WHERE subtag=? AND lang=? AND type=?");
 376     #warn "QUERY: SELECT description FROM language_descriptions WHERE subtag=$script AND lang=$lang AND type=$type";
 377     $sth->execute($script,$lang,$type);
 378     while (my $descriptions = $sth->fetchrow_hashref) {
 379         $desc = $descriptions->{'description'};
 380     }
 381     unless ($desc) {
 382         $sth = $dbh->prepare("SELECT description FROM language_descriptions WHERE subtag=? AND lang=? AND type=?");
 383         $sth->execute($script,'en',$type);
 384         while (my $descriptions = $sth->fetchrow_hashref) {
 385             $desc = $descriptions->{'description'};
 386         }
 387     }
 388     return $desc;
 389 }
 390 =head2 regex_lang_subtags
 391
 392 This internal sub takes a string composed according to RFC 4646 as
 393 an input and returns a reference to a hash containing keys and values
 394 for ( language, script, region, variant, extension, privateuse )
 395
 396 =cut
 397
 398 sub regex_lang_subtags {
 399     my $string = shift;
 400
 401     # Regex for recognizing RFC 4646 well-formed tags
 402     # http://www.rfc-editor.org/rfc/rfc4646.txt
 403
 404     # regexes based on : http://unicode.org/cldr/data/tools/java/org/unicode/cldr/util/data/langtagRegex.txt
 405     # The structure requires no forward references, so it reverses the order.
 406     # The uppercase comments are fragments copied from RFC 4646
 407     #
 408     # Note: the tool requires that any real "=" or "#" or ";" in the regex be escaped.
 409
 410     my $alpha   = qr/[a-zA-Z]/ ;    # ALPHA
 411     my $digit   = qr/[0-9]/ ;   # DIGIT
 412     my $alphanum    = qr/[a-zA-Z0-9]/ ; # ALPHA / DIGIT
 413     my $x   = qr/[xX]/ ;    # private use singleton
 414     my $singleton = qr/[a-w y-z A-W Y-Z]/ ; # other singleton
 415     my $s   = qr/[-]/ ; # separator -- lenient parsers will use [-_]
 416
 417     # Now do the components. The structure is slightly different to allow for capturing the right components.
 418     # The notation (?:....) is a non-capturing version of (...): so the "?:" can be deleted if someone doesn't care about capturing.
 419
 420     my $extlang = qr{(?: $s $alpha{3} )}x ; # *3("-" 3ALPHA)
 421     my $language    = qr{(?: $alpha{2,3} | $alpha{4,8} )}x ;
 422     #my $language   = qr{(?: $alpha{2,3}$extlang{0,3} | $alpha{4,8} )}x ;   # (2*3ALPHA [ extlang ]) / 4ALPHA / 5*8ALPHA
 423
 424     my $script  = qr{(?: $alpha{4} )}x ;    # 4ALPHA
 425
 426     my $region  = qr{(?: $alpha{2} | $digit{3} )}x ;     # 2ALPHA / 3DIGIT
 427
 428     my $variantSub  = qr{(?: $digit$alphanum{3} | $alphanum{5,8} )}x ;  # *("-" variant), 5*8alphanum / (DIGIT 3alphanum)
 429     my $variant = qr{(?: $variantSub (?: $s$variantSub )* )}x ; # *("-" variant), 5*8alphanum / (DIGIT 3alphanum)
 430
 431     my $extensionSub    = qr{(?: $singleton (?: $s$alphanum{2,8} )+ )}x ;   # singleton 1*("-" (2*8alphanum))
 432     my $extension   = qr{(?: $extensionSub (?: $s$extensionSub )* )}x ; # singleton 1*("-" (2*8alphanum))
 433
 434     my $privateuse  = qr{(?: $x (?: $s$alphanum{1,8} )+ )}x ;   # ("x"/"X") 1*("-" (1*8alphanum))
 435
 436     # Define certain grandfathered codes, since otherwise the regex is pretty useless.
 437     # Since these are limited, this is safe even later changes to the registry --
 438     # the only oddity is that it might change the type of the tag, and thus
 439     # the results from the capturing groups.
 440     # http://www.iana.org/assignments/language-subtag-registry
 441     # Note that these have to be compared case insensitively, requiring (?i) below.
 442
 443     my $grandfathered   = qr{(?: (?i)
 444         en $s GB $s oed
 445     |   i $s (?: ami | bnn | default | enochian | hak | klingon | lux | mingo | navajo | pwn | tao | tay | tsu )
 446     |   sgn $s (?: BE $s fr | BE $s nl | CH $s de)
 447 )}x;
 448
 449     # For well-formedness, we don't need the ones that would otherwise pass, so they are commented out here
 450
 451     #   |   art $s lojban
 452     #   |   cel $s gaulish
 453     #   |   en $s (?: boont | GB $s oed | scouse )
 454     #   |   no $s (?: bok | nyn)
 455     #   |   zh $s (?: cmn | cmn $s Hans | cmn $s Hant | gan | guoyu | hakka | min | min $s nan | wuu | xiang | yue)
 456
 457     # Here is the final breakdown, with capturing groups for each of these components
 458     # The language, variants, extensions, grandfathered, and private-use may have interior '-'
 459
 460     #my $root = qr{(?: ($language) (?: $s ($script) )? 40% (?: $s ($region) )? 40% (?: $s ($variant) )? 10% (?: $s ($extension) )? 5% (?: $s ($privateuse) )? 5% ) 90% | ($grandfathered) 5% | ($privateuse) 5% };
 461
 462     $string =~  qr{^ (?:($language)) (?:$s($script))? (?:$s($region))?  (?:$s($variant))?  (?:$s($extension))?  (?:$s($privateuse))? $}xi;  # |($grandfathered) | ($privateuse) $}xi;
 463     my %subtag = (
 464         'rfc4646_subtag' => $string,
 465         'language' => $1,
 466         'script' => $2,
 467         'region' => $3,
 468         'variant' => $4,
 469         'extension' => $5,
 470         'privateuse' => $6,
 471     );
 472     return \%subtag;
 473 }
 474
 475 # Script Direction Resources:
 476 # http://www.w3.org/International/questions/qa-scripts
 477 sub get_bidi {
 478     my ($language_script)= @_;
 479     my $dbh = C4::Context->dbh;
 480     my $bidi;
 481     my $sth = $dbh->prepare('SELECT bidi FROM language_script_bidi WHERE rfc4646_subtag=?');
 482     $sth->execute($language_script);
 483     while (my $result = $sth->fetchrow_hashref) {
 484         $bidi = $result->{'bidi'};
 485     }
 486     return $bidi;
 487 };
 488
 489 sub accept_language {
 490     # referenced http://search.cpan.org/src/CGILMORE/I18N-AcceptLanguage-1.04/lib/I18N/AcceptLanguage.pm
 491     my ($clientPreferences,$supportedLanguages) = @_;
 492     my @languages = ();
 493     if ($clientPreferences) {
 494         # There should be no whitespace anways, but a cleanliness/sanity check
 495         $clientPreferences =~ s/\s//g;
 496         # Prepare the list of client-acceptable languages
 497         foreach my $tag (split(/,/, $clientPreferences)) {
 498             my ($language, $quality) = split(/\;/, $tag);
 499             $quality =~ s/^q=//i if $quality;
 500             $quality = 1 unless $quality;
 501             next if $quality <= 0;
 502             # We want to force the wildcard to be last
 503             $quality = 0 if ($language eq '*');
 504             # Pushing lowercase language here saves processing later
 505             push(@languages, { quality => $quality,
 506                language => $language,
 507                lclanguage => lc($language) });
 508         }
 509     } else {
 510         carp "accept_language(x,y) called with no clientPreferences (x).";
 511     }
 512     # Prepare the list of server-supported languages
 513     my %supportedLanguages = ();
 514     my %secondaryLanguages = ();
 515     foreach my $language (@$supportedLanguages) {
 516         # warn "Language supported: " . $language->{language};
 517         my $subtag = $language->{rfc4646_subtag};
 518         $supportedLanguages{lc($subtag)} = $subtag;
 519         if ( $subtag =~ /^([^-]+)-?/ ) {
 520             $secondaryLanguages{lc($1)} = $subtag;
 521         }
 522     }
 523
 524     # Reverse sort the list, making best quality at the front of the array
 525     @languages = sort { $b->{quality} <=> $a->{quality} } @languages;
 526     my $secondaryMatch = '';
 527     foreach my $tag (@languages) {
 528         if (exists($supportedLanguages{$tag->{lclanguage}})) {
 529             # Client en-us eq server en-us
 530             return $supportedLanguages{$tag->{language}} if exists($supportedLanguages{$tag->{language}});
 531             return $supportedLanguages{$tag->{lclanguage}};
 532         } elsif (exists($secondaryLanguages{$tag->{lclanguage}})) {
 533             # Client en eq server en-us
 534             return $secondaryLanguages{$tag->{language}} if exists($secondaryLanguages{$tag->{language}});
 535             return $supportedLanguages{$tag->{lclanguage}};
 536         } elsif ($tag->{lclanguage} =~ /^([^-]+)-/ && exists($secondaryLanguages{$1}) && $secondaryMatch eq '') {
 537             # Client en-gb eq server en-us
 538             $secondaryMatch = $secondaryLanguages{$1};
 539         } elsif ($tag->{lclanguage} =~ /^([^-]+)-/ && exists($secondaryLanguages{$1}) && $secondaryMatch eq '') {
 540             # FIXME: We just checked the exact same conditional!
 541             # Client en-us eq server en
 542             $secondaryMatch = $supportedLanguages{$1};
 543         } elsif ($tag->{lclanguage} eq '*') {
 544         # * matches every language not already specified.
 545         # It doesn't care which we pick, so let's pick the default,
 546         # if available, then the first in the array.
 547         #return $acceptor->defaultLanguage() if $acceptor->defaultLanguage();
 548         return $supportedLanguages->[0];
 549         }
 550     }
 551     # No primary matches. Secondary? (ie, en-us requested and en supported)
 552     return $secondaryMatch if $secondaryMatch;
 553     return undef;   # else, we got nothing.
 554 }
 555 1;
 556
 557 __END__
 558
 559 =head1 AUTHOR
 560
 561 Joshua Ferraro
 562
 563 =cut