@@ -1,6 +1,13 @@ module HttpAcceptLanguage + # Returns a sorted array based on user preference in HTTP_ACCEPT_LANGUAGE. - # Browsers send this HTTP header. Don't think this is holy. + # Browsers send this HTTP header, so don't think this is holy. + # + # Example: + # + # request.user_preferred_languages + # # => [ 'nl-NL', 'nl-BE', 'nl', 'en-US', 'en' ] + # def user_preferred_languages @user_preferred_languages ||= env['HTTP_ACCEPT_LANGUAGE'].split(',').collect do |l| l += ';q=1.0' unless l =~ /;q=\d+\.\d+$/ @@ -9,17 +16,37 @@ module HttpAcceptLanguage raise "Not correctly formatted" unless x.first =~ /^[a-z\-]+$/i y.last.to_f <=> x.last.to_f end.collect do |l| - l.first.downcase.gsub(/-[a-z]+$/i){|x| x.upcase} + l.first.downcase.gsub(/-[a-z]+$/i) { |x| x.upcase } end - rescue + rescue # Just rescue anything if the browser messed up badly. [] end + # Finds the locale specifically requested by the browser. + # + # Example: + # + # request.preferred_language_from I18n.available_locales + # # => 'nl' + # def preferred_language_from(array) (user_preferred_languages & array.collect { |i| i.to_s }).first end - + + # Returns the first of the user_preferred_languages that is compatible + # with the available locales. Ignores region. + # + # Example: + # + # request.compatible_language_from I18n.available_locales + # def compatible_language_from(array) - array.select{|x| lang = x.to_s.split("-")[0]; user_preferred_languages.any?{|y| y.to_s.split("-")[0] == lang }}.first + user_preferred_languages.map do |x| + x = x.to_s.split("-")[0] + array.find do |y| + y.to_s.split("-")[0] == x + end + end.compact.first end + end lib/http_accept_language.rb @@ -33,6 +33,11 @@ class HttpAcceptLanguageTest < Test::Unit::TestCase assert_equal 'en', request.compatible_language_from(%w{en}) end + def test_should_find_first_compatible_from_user_preferred + request.env['HTTP_ACCEPT_LANGUAGE'] = 'en-us,de-de' + assert_equal 'en', request.compatible_language_from(%w{de en}) + end + private def request @request ||= MockedCgiRequest.new test/http_accept_language_test.rb b907a7cd19582eeca9147df463c92f953741b63c Iain Hecker github@iain.nl http://github.com/iain/http_accept_language/commit/159d2446c7a908afbe6b18471ef9be9a94b454a7 159d2446c7a908afbe6b18471ef9be9a94b454a7 2009-03-12T14:56:15-07:00 2009-03-12T14:56:15-07:00 Return the first of user compatible locales. Added some more RDoc stuff. b25173086b28f1aa2ac025d42b303e2c70a73a25 Iain Hecker github@iain.nl