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README.markdown

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+# rack-noie
+
+rack-noie is the coolest rack middleware ever created. And it is so because it does _everyone_
+a favor: it shows the way out of your website to poor souls out there using Internet Explorer 6.
+
+I don't wanna hear excuses. IE6 stinks. If we keep developing software that plays well with it,
+they'll come up with yet more crap (read: IE7, although a little bit less bad than IE6), until
+Microsoft single-handedly manages to hold us back for a few more years.
+
+# usage
+
+just 
+
+    require 'noie' # or 'juliocesar-noie' when i gemify it
+
+and
+
+    use NoIE, :redirect => '/noieplease.html'
+
+the above will redirect to a page noieplease.html in your website. You can redirect to
+a URL as well, like so
+
+    use NoIE, :redirect => 'http://slashdot.org'
+
+or let the default kick in
+
+    use NoIE
+
+# disclaimer
+
+I'm a nice guy. I'm so nice that the default URL points to Microsoft's IE7 upgrade page.
+
+# license
+
+MIT, as usual.

Rakefile

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+require 'rake/testtask'
+
+task :default => [:test]
+
+Rake::TestTask.new do |task|
+  task.pattern = 'test/noie_test.rb'
+  task.warning, task.verbose = true, true
+end

lib/noie.rb

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+class NoIE  
+  def initialize(app, options = {})
+    @app = app
+    @options = options
+    # Defaults to a slighly less of an excuse that passes for a browser
+    @options[:redirect] ||= 'http://www.microsoft.com/windows/downloads/ie/getitnow.mspx'
+  end
+
+  def call(env)
+    ie6_found_in?(env) ? kick_it : @app.call(env)    
+  end
+
+  private
+  def ie6_found_in?(env)
+    env['HTTP_USER_AGENT'][/MSIE 6.0/] and @options[:redirect] != env['PATH_INFO']
+  end
+
+  def kick_it
+    [301, {'Location' => @options[:redirect]}, 'Fail browser is fail']
+  end
+end

test/noie_test.rb

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+require 'test/unit'
+
+require 'rubygems'
+require 'rack/mock'
+
+require File.join(File.dirname(__FILE__), '..', 'lib', 'noie')
+
+class TestApp
+  def call(env)
+    [200, {}, 'Hi Internets!']
+  end
+end
+
+class NoieTest < Test::Unit::TestCase
+
+  def test_redirects_to_where_it_should_if_ie6
+    request = Rack::MockRequest.new(NoIE.new(TestApp.new, {:redirect => 'http://slashdot.org'}))
+    response = request.get('/', {'HTTP_USER_AGENT' => 'MSIE 6.0' })
+    assert_equal 301, response.status
+    assert_equal response.location, 'http://slashdot.org'
+  end
+
+  def test_allows_local_local_urls
+    request = Rack::MockRequest.new(NoIE.new(TestApp.new, {:redirect => '/foo'}))
+    response = request.get('/foo', {'HTTP_USER_AGENT' => 'MSIE 6.0' })    
+    assert_equal "Hi Internets!", response.body
+  end
+
+end