Created
October 20, 2010 08:43
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| # Usage example: | |
| # | |
| # Main.register Sinatra::UserAgentHelpers | |
| # | |
| # -# haml | |
| # %body{class: browser.body_class} | |
| # | |
| # - if browser.ios? | |
| # %script{:language => 'text/javascript', :src => '/js/jqtouch.js'} | |
| # %p Download our mobile app in the iTunes store! | |
| # | |
| # Possible outputs: | |
| # | |
| # <body class='webkit safari mac'> | |
| # <body class='windows ie ie6'> | |
| class UserAgent | |
| UA_REGEXP = %r{([^ /]+)/([^ ]+)(?: \(([^)]+)\))?} | |
| def initialize(ua) | |
| @ua_string = ua | |
| @ua = ua.scan(UA_REGEXP).map { |r| | |
| r[2] = r[2].split(';') unless r[2].nil? | |
| { :product => r[0], :version => r[1], :details => r[2] } | |
| } | |
| end | |
| # Browsers | |
| def webkit?() product?('AppleWebKit'); end | |
| def chrome?() product?('Chrome'); end | |
| def safari?() product?('Safari'); end | |
| def ios?() product?('Safari') && product?('Mobile'); end | |
| def gecko?() product?('Gecko'); end | |
| def opera?() product?('Opera'); end | |
| def ie?() detail?(/^MSIE/, 'Mozilla'); end | |
| # OS's and devices | |
| def linux?() detail?(/^Linux/, 'Mozilla'); end | |
| def iphone?() detail?(/^iPhone/, 'Mozilla'); end | |
| def ipad?() detail?(/^iPad/, 'Mozilla'); end | |
| def windows?() detail?(/^Windows/, 'Mozilla'); end | |
| def osx?() detail?(/^(Intel )?Mac OS X/, 'Mozilla'); end | |
| def mac?() detail?(/^Macintosh/, 'Mozilla') || osx?; end | |
| # IE | |
| def ie9?() detail?('MSIE 9.0', 'Mozilla'); end | |
| def ie8?() detail?('MSIE 8.0', 'Mozilla'); end | |
| def ie7?() detail?(/^MSIE 7.0/, 'Mozilla'); end | |
| def ie6?() detail?(/^MSIE 6/, 'Mozilla'); end | |
| def to_s() @ua_string; end | |
| def inspect() @ua.inspect; end | |
| # Checks for, say, 'Gecko' in 'Gecko/3.9.82' | |
| def product?(str) | |
| !! @ua.detect { |p| p[:product] == str } | |
| end | |
| # Checks for, say, 'MSIE' in 'Mozilla/5.0 (MSIE; x; x)' | |
| def detail?(detail, prod=nil) | |
| !! @ua.detect { |p| | |
| prod.nil? || prod == p[:product] && has_spec(p[:details], detail) | |
| } | |
| end | |
| def body_class | |
| (%w(webkit chrome safari ios gecko opera ie linux iphone) + | |
| %w(ipad windows osx mac ie6 ie7 ie8 ie9)).map do |aspect| | |
| aspect if self.send :"#{aspect}?" | |
| end.compact.join(' ') | |
| end | |
| protected | |
| def has_spec(haystack, spec) | |
| !haystack.nil? && haystack.detect { |d| d.match(spec) } | |
| end | |
| end | |
| module Sinatra | |
| module UserAgentHelpers | |
| def browser | |
| UserAgent.new(env['HTTP_USER_AGENT']) | |
| end | |
| end | |
| end |
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