X-Git-Url: http://koha-dev.rot13.org:8081/gitweb/?a=blobdiff_plain;f=C4%2FLanguages.pm;h=57bef47465f111f773dd0176476cc2471ed48323;hb=e20270fec4f6d34f01050bea4c5765d5b3c4ed33;hp=2d5ceb8ec4e59acd8d6568e7b3344eb09d57852d;hpb=c7f22f84ada7ad803ce30d253bd95555ad0aab64;p=srvgit diff --git a/C4/Languages.pm b/C4/Languages.pm index 2d5ceb8ec4..57bef47465 100644 --- a/C4/Languages.pm +++ b/C4/Languages.pm @@ -2,7 +2,7 @@ package C4::Languages; # Copyright 2006 (C) LibLime # Joshua Ferraro -# +# Portions Copyright 2009 Chris Cormack and the Koha Dev Team # This file is part of Koha. # # Koha is free software; you can redistribute it and/or modify it under the @@ -14,15 +14,44 @@ package C4::Languages; # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR # A PARTICULAR PURPOSE. See the GNU General Public License for more details. # -# You should have received a copy of the GNU General Public License along with -# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place, -# Suite 330, Boston, MA 02111-1307 USA +# You should have received a copy of the GNU General Public License along +# with Koha; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +use strict; +use warnings; -use strict; use warnings; #FIXME: turn off warnings before release -require Exporter; +use Carp; +use CGI; +use List::MoreUtils qw( any ); use C4::Context; -use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS); +use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $DEBUG); + +eval { + if (C4::Context->ismemcached) { + require Memoize::Memcached; + import Memoize::Memcached qw(memoize_memcached); + + memoize_memcached('getTranslatedLanguages', memcached => C4::Context->memcached); + memoize_memcached('getFrameworkLanguages' , memcached => C4::Context->memcached); + memoize_memcached('getAllLanguages', memcached => C4::Context->memcached); + } +}; + +BEGIN { + $VERSION = 3.07.00.049; + require Exporter; + @ISA = qw(Exporter); + @EXPORT = qw( + &getFrameworkLanguages + &getTranslatedLanguages + &getLanguages + &getAllLanguages + ); + @EXPORT_OK = qw(getFrameworkLanguages getTranslatedLanguages getAllLanguages getLanguages get_bidi regex_lang_subtags language_get_description accept_language getlanguage); + $DEBUG = 0; +} =head1 NAME @@ -34,13 +63,9 @@ use C4::Languages; =head1 DESCRIPTION -=head1 FUNCTIONS - =cut -$VERSION = 3.00; -@ISA = qw(Exporter); -@EXPORT_OK = qw(getFrameworkLanguages getTranslatedLanguages getAllLanguages get_bidi regex_lang_subtags language_get_description accept_language); -my $DEBUG = 0; + +=head1 FUNCTIONS =head2 getFrameworkLanguages @@ -72,9 +97,9 @@ sub getFrameworkLanguages { if ($dirname eq $language_set->{language_code}) { push @languages, { - 'language_code'=>$dirname, - 'language_description'=>$language_set->{language_description}, - 'native_descrition'=>$language_set->{language_native_description} } + 'language_code'=>$dirname, + 'language_description'=>$language_set->{language_description}, + 'native_descrition'=>$language_set->{language_native_description} } } } } @@ -86,7 +111,7 @@ sub getFrameworkLanguages { Returns a reference to an array of hashes: my $languages = getTranslatedLanguages(); - print "Available translated langauges:\n"; + print "Available translated languages:\n"; for my $language(@$trlanguages) { print "$language->{language_code}\n"; # language code in iso 639-2 print "$language->{language_name}\n"; # language name in native script @@ -96,39 +121,37 @@ Returns a reference to an array of hashes: =cut sub getTranslatedLanguages { - my ($interface, $theme) = @_; + my ($interface, $theme, $current_language, $which) = @_; my $htdocs; - my $all_languages = getAllLanguages(); my @languages; - my $lang; - + my @enabled_languages; + if ($interface && $interface eq 'opac' ) { + @enabled_languages = split ",", C4::Context->preference('opaclanguages'); $htdocs = C4::Context->config('opachtdocs'); if ( $theme and -d "$htdocs/$theme" ) { (@languages) = _get_language_dirs($htdocs,$theme); - return _build_languages_arrayref($all_languages,@languages); } else { for my $theme ( _get_themes('opac') ) { push @languages, _get_language_dirs($htdocs,$theme); } - return _build_languages_arrayref($all_languages,@languages); } } elsif ($interface && $interface eq 'intranet' ) { + @enabled_languages = split ",", C4::Context->preference('language'); $htdocs = C4::Context->config('intrahtdocs'); if ( $theme and -d "$htdocs/$theme" ) { @languages = _get_language_dirs($htdocs,$theme); - return _build_languages_arrayref($all_languages,@languages); } else { - foreach my $theme ( _get_themes('opac') ) { + foreach my $theme ( _get_themes('intranet') ) { push @languages, _get_language_dirs($htdocs,$theme); } - return _build_languages_arrayref($all_languages,@languages); } } else { + @enabled_languages = split ",", C4::Context->preference('opaclanguages'); my $htdocs = C4::Context->config('intrahtdocs'); foreach my $theme ( _get_themes('intranet') ) { push @languages, _get_language_dirs($htdocs,$theme); @@ -137,8 +160,11 @@ sub getTranslatedLanguages { foreach my $theme ( _get_themes('opac') ) { push @languages, _get_language_dirs($htdocs,$theme); } - return _build_languages_arrayref($all_languages,@languages); + my %seen; + $seen{$_}++ for @languages; + @languages = keys %seen; } + return _build_languages_arrayref(\@languages,$current_language,\@enabled_languages); } =head2 getAllLanguages @@ -146,45 +172,87 @@ sub getTranslatedLanguages { Returns a reference to an array of hashes: my $alllanguages = getAllLanguages(); - print "Available translated langauges:\n"; + print "Available translated languages:\n"; for my $language(@$alllanguages) { print "$language->{language_code}\n"; print "$language->{language_name}\n"; print "$language->{language_locale_name}\n"; } +This routine is a wrapper for getLanguages(). + =cut sub getAllLanguages { - my @languages_loop; - my $dbh=C4::Context->dbh; - my $current_language = 'en'; - my $sth = $dbh->prepare('SELECT * FROM language_subtag_registry WHERE type=\'language\''); - $sth->execute(); - while (my $language_subtag_registry = $sth->fetchrow_hashref) { - - # pull out all the script descriptions for each language - my $sth2= $dbh->prepare('SELECT * FROM language_descriptions WHERE type=\'language\' AND subtag =?'); - $sth2->execute($language_subtag_registry->{subtag}); - - # add the correct description info - while (my $language_descriptions = $sth2->fetchrow_hashref) { - - # Insert the language description using the current language script - #if ( $language_subtag_registry->{subtag} - if ( $current_language eq $language_descriptions->{lang} ) { - $language_subtag_registry->{language_description} = $language_descriptions->{description}; - #warn "CUR:".$language_subtag_registry->{description}; - } - - # Insert the language name using the script native to the language (FIXME: should really be based on script) - if ($language_subtag_registry->{subtag} eq $language_descriptions->{lang}) { - $language_subtag_registry->{language_native_description} = $language_descriptions->{description}; - #warn "NAT: Desc:$language_descriptions->{description} SubtagDesc: $language_subtag_registry->{language_description}"; - } - } - push @languages_loop, $language_subtag_registry; - } + return getLanguages(shift); +} + +=head2 getLanguages + + my $lang_arrayref = getLanguages([$lang[, $isFiltered]]); + +Returns a reference to an array of hashes of languages. + +- If no parameter is passed to the function, it returns english languages names +- If a $lang parameter conforming to RFC4646 syntax is passed, the function returns languages names translated in $lang + If a language name is not translated in $lang in database, the function returns english language name +- If $isFiltered is set to true, only the detail of the languages selected in system preferences AdvanceSearchLanguages is returned. + +=cut + +sub getLanguages { + my $lang = shift; + my $isFiltered = shift; + + my @languages_loop; + my $dbh=C4::Context->dbh; + my $default_language = 'en'; + my $current_language = $default_language; + my $language_list = $isFiltered ? C4::Context->preference("AdvancedSearchLanguages") : undef; + if ($lang) { + $current_language = regex_lang_subtags($lang)->{'language'}; + } + my $sth = $dbh->prepare('SELECT * FROM language_subtag_registry WHERE type=\'language\''); + $sth->execute(); + while (my $language_subtag_registry = $sth->fetchrow_hashref) { + my $desc; + # check if language name is stored in current language + my $sth4= $dbh->prepare("SELECT description FROM language_descriptions WHERE type='language' AND subtag =? AND lang = ?"); + $sth4->execute($language_subtag_registry->{subtag},$current_language); + while (my $language_desc = $sth4->fetchrow_hashref) { + $desc=$language_desc->{description}; + } + my $sth2= $dbh->prepare("SELECT * FROM language_descriptions LEFT JOIN language_rfc4646_to_iso639 on language_rfc4646_to_iso639.rfc4646_subtag = language_descriptions.subtag WHERE type='language' AND subtag =? AND language_descriptions.lang = ?"); + if ($desc) { + $sth2->execute($language_subtag_registry->{subtag},$current_language); + } + else { + $sth2->execute($language_subtag_registry->{subtag},$default_language); + } + my $sth3 = $dbh->prepare("SELECT description FROM language_descriptions WHERE type='language' AND subtag=? AND lang=?"); + # add the correct description info + while (my $language_descriptions = $sth2->fetchrow_hashref) { + $sth3->execute($language_subtag_registry->{subtag},$language_subtag_registry->{subtag}); + my $native_description; + while (my $description = $sth3->fetchrow_hashref) { + $native_description = $description->{description}; + } + + # fill in the ISO6329 code + $language_subtag_registry->{iso639_2_code} = $language_descriptions->{iso639_2_code}; + # fill in the native description of the language, as well as the current language's translation of that if it exists + if ($native_description) { + $language_subtag_registry->{language_description} = $native_description; + $language_subtag_registry->{language_description}.=" ($language_descriptions->{description})" if $language_descriptions->{description}; + } + else { + $language_subtag_registry->{language_description} = $language_descriptions->{description}; + } + } + if ( !$language_list || index ( $language_list, $language_subtag_registry->{ iso639_2_code } ) >= 0) { + push @languages_loop, $language_subtag_registry; + } + } return \@languages_loop; } @@ -201,7 +269,7 @@ sub _get_themes { my $interface = shift; my $htdocs; my @themes; - if ( $interface eq 'intranet' ) { + if ( $interface && $interface eq 'intranet' ) { $htdocs = C4::Context->config('intrahtdocs'); } else { @@ -224,19 +292,22 @@ Internal function, returns an array of directory names, excluding non-language d sub _get_language_dirs { my ($htdocs,$theme) = @_; - my @languages; + $htdocs //= ''; + $theme //= ''; + my @lang_strings; opendir D, "$htdocs/$theme"; - for my $language ( readdir D ) { - next if $language =~/^\./; - next if $language eq 'all'; - next if $language =~/png$/; - next if $language =~/css$/; - next if $language =~/CVS$/; - next if $language =~/\.txt$/i; #Don't read the readme.txt ! - next if $language =~/img/; - push @languages, $language; + for my $lang_string ( readdir D ) { + next if $lang_string =~/^\./; + next if $lang_string eq 'all'; + next if $lang_string =~/png$/; + next if $lang_string =~/js$/; + next if $lang_string =~/css$/; + next if $lang_string =~/CVS$/; + next if $lang_string =~/\.txt$/i; #Don't read the readme.txt ! + next if $lang_string =~/img|images|famfam|js|less|lib|sound|pdf/; + push @lang_strings, $lang_string; } - return (@languages); + return (@lang_strings); } =head2 _build_languages_arrayref @@ -248,51 +319,79 @@ FIXME: this could be rewritten and simplified using map =cut sub _build_languages_arrayref { - my ($all_languages,@languages) = @_; - my @final_languages; - my %seen_languages; - my %found_languages; - # Loop through the languages, pick the ones that are translated - for my $language (@languages) { - - # separate the language string into its subtag types - my $language_subtags_hashref = regex_lang_subtags($language); - unless ($seen_languages{$language}) { - for my $language_code (@$all_languages) { - if ($language_subtags_hashref->{language} eq $language_code->{'subtag'}) { - $language_code->{'language_lang'} = $language; - $language_code->{'language_code'} = $language_subtags_hashref->{'language'}; - $language_code->{'script_code'} = $language_subtags_hashref->{'script'}; - $language_code->{'region_code'} = $language_subtags_hashref->{'region'}; - $language_code->{'variant_code'} = $language_subtags_hashref->{'variant'}; - push @final_languages, $language_code; - $found_languages{$language}++; - } - } - $seen_languages{$language}++; - - # Handle languages not in our database with their code - unless ($found_languages{$language}) { - my $language_code; - $language_code->{'language_lang'} = $language; - $language_code->{'language_code'} = $language; - push @final_languages, $language_code; - } + my ($translated_languages,$current_language,$enabled_languages) = @_; + $current_language //= ''; + my @translated_languages = @$translated_languages; + my @languages_loop; # the final reference to an array of hashrefs + my @enabled_languages = @$enabled_languages; + # how many languages are enabled, if one, take note, some contexts won't need to display it + my %seen_languages; # the language tags we've seen + my %found_languages; + my $language_groups; + my $track_language_groups; + my $current_language_regex = regex_lang_subtags($current_language); + # Loop through the translated languages + for my $translated_language (@translated_languages) { + # separate the language string into its subtag types + my $language_subtags_hashref = regex_lang_subtags($translated_language); + + # is this language string 'enabled'? + for my $enabled_language (@enabled_languages) { + #warn "Checking out if $translated_language eq $enabled_language"; + $language_subtags_hashref->{'enabled'} = 1 if $translated_language eq $enabled_language; } + + # group this language, key by langtag + $language_subtags_hashref->{'sublanguage_current'} = 1 if $translated_language eq $current_language; + $language_subtags_hashref->{'rfc4646_subtag'} = $translated_language; + $language_subtags_hashref->{'native_description'} = language_get_description($language_subtags_hashref->{language},$language_subtags_hashref->{language},'language'); + $language_subtags_hashref->{'script_description'} = language_get_description($language_subtags_hashref->{script},$language_subtags_hashref->{'language'},'script'); + $language_subtags_hashref->{'region_description'} = language_get_description($language_subtags_hashref->{region},$language_subtags_hashref->{'language'},'region'); + $language_subtags_hashref->{'variant_description'} = language_get_description($language_subtags_hashref->{variant},$language_subtags_hashref->{'language'},'variant'); + $track_language_groups->{$language_subtags_hashref->{'language'}}++; + push ( @{ $language_groups->{$language_subtags_hashref->{language}} }, $language_subtags_hashref ); } - return \@final_languages; + # $key is a language subtag like 'en' + while( my ($key, $value) = each %$language_groups) { + + # is this language group enabled? are any of the languages within it enabled? + my $enabled; + for my $enabled_language (@enabled_languages) { + my $regex_enabled_language = regex_lang_subtags($enabled_language); + $enabled = 1 if $key eq ($regex_enabled_language->{language} // ''); + } + push @languages_loop, { + # this is only use if there is one + rfc4646_subtag => @$value[0]->{rfc4646_subtag}, + native_description => language_get_description($key,$key,'language'), + language => $key, + sublanguages_loop => $value, + plural => $track_language_groups->{$key} >1 ? 1 : 0, + current => ($current_language_regex->{language} // '') eq $key ? 1 : 0, + group_enabled => $enabled, + }; + } + return \@languages_loop; } sub language_get_description { - my ($script,$lang,$type) = @_; - my $dbh = C4::Context->dbh; - my $desc; - my $sth = $dbh->prepare('SELECT description FROM language_descriptions WHERE subtag=? AND lang=? AND type=?'); - $sth->execute($script,$lang,$type); - while (my $descriptions = $sth->fetchrow_hashref) { - $desc = $descriptions->{'description'}; - } - return $desc; + my ($script,$lang,$type) = @_; + my $dbh = C4::Context->dbh; + my $desc; + my $sth = $dbh->prepare("SELECT description FROM language_descriptions WHERE subtag=? AND lang=? AND type=?"); + #warn "QUERY: SELECT description FROM language_descriptions WHERE subtag=$script AND lang=$lang AND type=$type"; + $sth->execute($script,$lang,$type); + while (my $descriptions = $sth->fetchrow_hashref) { + $desc = $descriptions->{'description'}; + } + unless ($desc) { + $sth = $dbh->prepare("SELECT description FROM language_descriptions WHERE subtag=? AND lang=? AND type=?"); + $sth->execute($script,'en',$type); + while (my $descriptions = $sth->fetchrow_hashref) { + $desc = $descriptions->{'description'}; + } + } + return $desc; } =head2 regex_lang_subtags @@ -366,8 +465,9 @@ sub regex_lang_subtags { #my $root = qr{(?: ($language) (?: $s ($script) )? 40% (?: $s ($region) )? 40% (?: $s ($variant) )? 10% (?: $s ($extension) )? 5% (?: $s ($privateuse) )? 5% ) 90% | ($grandfathered) 5% | ($privateuse) 5% }; - $string =~ qr{^ (?:($language)) (?:$s($script))? (?:$s($region))? (?:$s($variant))? (?:$s($extension))? (?:$s($privateuse))? $}xi; # |($grandfathered) | ($privateuse) $}xi; - my %subtag = ( + $string =~ qr{^ (?:($language)) (?:$s($script))? (?:$s($region))? (?:$s($variant))? (?:$s($extension))? (?:$s($privateuse))? $}xi; # |($grandfathered) | ($privateuse) $}xi; + my %subtag = ( + 'rfc4646_subtag' => $string, 'language' => $1, 'script' => $2, 'region' => $3, @@ -381,77 +481,134 @@ sub regex_lang_subtags { # Script Direction Resources: # http://www.w3.org/International/questions/qa-scripts sub get_bidi { - my ($language_script)= @_; - my $dbh = C4::Context->dbh; - my $bidi; - my $sth = $dbh->prepare('SELECT bidi FROM language_bidi WHERE rfc4646_subtag=?'); - $sth->execute($language_script); - while (my $result = $sth->fetchrow_hashref) { - $bidi = $result->{'bidi'}; - } - return $bidi; + my ($language_script)= @_; + my $dbh = C4::Context->dbh; + my $bidi; + my $sth = $dbh->prepare('SELECT bidi FROM language_script_bidi WHERE rfc4646_subtag=?'); + $sth->execute($language_script); + while (my $result = $sth->fetchrow_hashref) { + $bidi = $result->{'bidi'}; + } + return $bidi; }; sub accept_language { - # referenced http://search.cpan.org/src/CGILMORE/I18N-AcceptLanguage-1.04/lib/I18N/AcceptLanguage.pm - my ($clientPreferences,$supportedLanguages) = @_; - # There should be no whitespace anways, but a cleanliness/sanity check - $clientPreferences =~ s/\s//g; - - # Prepare the list of client-acceptable languages - my @languages = (); - foreach my $tag (split(/,/, $clientPreferences)) { - my ($language, $quality) = split(/\;/, $tag); - $quality =~ s/^q=//i if $quality; - $quality = 1 unless $quality; - next if $quality <= 0; - # We want to force the wildcard to be last - $quality = 0 if ($language eq '*'); - # Pushing lowercase language here saves processing later - push(@languages, { quality => $quality, - language => $language, - lclanguage => lc($language) }); - } - # Prepare the list of server-supported languages - my %supportedLanguages = (); - my %secondaryLanguages = (); - foreach my $language (@$supportedLanguages) { - warn "SUP: ".$language->{language_code}; - $supportedLanguages{lc($language->{language_code})} = $language->{language_code}; - if ($language->{language_code} =~ /^([^-]+)-?/) { - $secondaryLanguages{lc($1)} = $language->{language_code}; - } - } - - # Reverse sort the list, making best quality at the front of the array - @languages = sort { $b->{quality} <=> $a->{quality} } @languages; - my $secondaryMatch = ''; - foreach my $tag (@languages) { - if (exists($supportedLanguages{$tag->{lclanguage}})) { - # Client en-us eq server en-us - return $supportedLanguages{$tag->{language}} if exists($supportedLanguages{$tag->{language}}); - return $supportedLanguages{$tag->{lclanguage}}; - } elsif (exists($secondaryLanguages{$tag->{lclanguage}})) { - # Client en eq server en-us - return $secondaryLanguages{$tag->{language}} if exists($secondaryLanguages{$tag->{language}}); - return $supportedLanguages{$tag->{lclanguage}}; - } elsif ($tag->{lclanguage} =~ /^([^-]+)-/ && exists($secondaryLanguages{$1}) && $secondaryMatch eq '') { - # Client en-gb eq server en-us - $secondaryMatch = $secondaryLanguages{$1}; - } elsif ($tag->{lclanguage} =~ /^([^-]+)-/ && exists($secondaryLanguages{$1}) && $secondaryMatch eq '') { - # Client en-us eq server en - $secondaryMatch = $supportedLanguages{$1}; - } elsif ($tag->{lclanguage} eq '*') { - # * matches every language not already specified. - # It doesn't care which we pick, so let's pick the default, - # if available, then the first in the array. - #return $acceptor->defaultLanguage() if $acceptor->defaultLanguage(); - return $supportedLanguages->[0]; - } - } - # No primary matches. Secondary? (ie, en-us requested and en supported) - return $secondaryMatch if $secondaryMatch; + # referenced http://search.cpan.org/src/CGILMORE/I18N-AcceptLanguage-1.04/lib/I18N/AcceptLanguage.pm + my ($clientPreferences,$supportedLanguages) = @_; + my @languages = (); + if ($clientPreferences) { + # There should be no whitespace anways, but a cleanliness/sanity check + $clientPreferences =~ s/\s//g; + # Prepare the list of client-acceptable languages + foreach my $tag (split(/,/, $clientPreferences)) { + my ($language, $quality) = split(/\;/, $tag); + $quality =~ s/^q=//i if $quality; + $quality = 1 unless $quality; + next if $quality <= 0; + # We want to force the wildcard to be last + $quality = 0 if ($language eq '*'); + # Pushing lowercase language here saves processing later + push(@languages, { quality => $quality, + language => $language, + lclanguage => lc($language) }); + } + } else { + carp "accept_language(x,y) called with no clientPreferences (x)."; + } + # Prepare the list of server-supported languages + my %supportedLanguages = (); + my %secondaryLanguages = (); + foreach my $language (@$supportedLanguages) { + # warn "Language supported: " . $language->{language}; + my $subtag = $language->{rfc4646_subtag}; + $supportedLanguages{lc($subtag)} = $subtag; + if ( $subtag =~ /^([^-]+)-?/ ) { + $secondaryLanguages{lc($1)} = $subtag; + } + } + + # Reverse sort the list, making best quality at the front of the array + @languages = sort { $b->{quality} <=> $a->{quality} } @languages; + my $secondaryMatch = ''; + foreach my $tag (@languages) { + if (exists($supportedLanguages{$tag->{lclanguage}})) { + # Client en-us eq server en-us + return $supportedLanguages{$tag->{language}} if exists($supportedLanguages{$tag->{language}}); + return $supportedLanguages{$tag->{lclanguage}}; + } elsif (exists($secondaryLanguages{$tag->{lclanguage}})) { + # Client en eq server en-us + return $secondaryLanguages{$tag->{language}} if exists($secondaryLanguages{$tag->{language}}); + return $supportedLanguages{$tag->{lclanguage}}; + } elsif ($tag->{lclanguage} =~ /^([^-]+)-/ && exists($secondaryLanguages{$1}) && $secondaryMatch eq '') { + # Client en-gb eq server en-us + $secondaryMatch = $secondaryLanguages{$1}; + } elsif ($tag->{lclanguage} =~ /^([^-]+)-/ && exists($secondaryLanguages{$1}) && $secondaryMatch eq '') { + # FIXME: We just checked the exact same conditional! + # Client en-us eq server en + $secondaryMatch = $supportedLanguages{$1}; + } elsif ($tag->{lclanguage} eq '*') { + # * matches every language not already specified. + # It doesn't care which we pick, so let's pick the default, + # if available, then the first in the array. + #return $acceptor->defaultLanguage() if $acceptor->defaultLanguage(); + return $supportedLanguages->[0]; + } + } + # No primary matches. Secondary? (ie, en-us requested and en supported) + return $secondaryMatch if $secondaryMatch; + return undef; # else, we got nothing. +} + +=head2 getlanguage + + Select a language based on the URL parameter 'language', a cookie, + syspref available languages & browser + +=cut + +sub getlanguage { + my ($cgi) = @_; + + $cgi //= new CGI; + my $interface = C4::Context->interface; + my $theme = C4::Context->preference( ( $interface eq 'opac' ) ? 'opacthemes' : 'template' ); + my $language; + + my $preference_to_check = + $interface eq 'intranet' ? 'language' : 'opaclanguages'; + # Get the available/valid languages list + my @languages = split /,/, C4::Context->preference($preference_to_check); + + # Chose language from the URL + $language = $cgi->param( 'language' ); + if ( defined $language && any { $_ eq $language } @languages) { + return $language; + } + + # cookie + if ($language = $cgi->cookie('KohaOpacLanguage') ) { + $language =~ s/[^a-zA-Z_-]*//; # sanitize cookie + } + + # HTTP_ACCEPT_LANGUAGE + if ( !$language && $ENV{HTTP_ACCEPT_LANGUAGE} ) { + $language = accept_language( $ENV{HTTP_ACCEPT_LANGUAGE}, + getTranslatedLanguages( $interface, $theme ) ); + } + + # Ignore a lang not selected in sysprefs + if ( $language && any { $_ eq $language } @languages ) { + return $language; + } + + # Pick the first selected syspref language + $language = shift @languages; + return $language if $language; + + # Fall back to English if necessary + return 'en'; } + 1; __END__