Class: Ungarbled::Middleware

Inherits:
Object
  • Object
show all
Defined in:
lib/ungarbled/middleware.rb

Constant Summary collapse

DISPOSITION_KEY = 
'Content-Disposition'
DISPOSITION_REGEX = 
/^(?:attachment|inline); filename="(.+)"$/

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Middleware

Returns a new instance of Middleware.



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# File 'lib/ungarbled/middleware.rb', line 8

def initialize(app, options = {})
  @app = app
  @options = options
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/ungarbled/middleware.rb', line 13

def call(env)
  req = Rack::Request.new(env)
  # Argument changes depending on version of browser
  browser =
    ##  Browser.method(:new).parameters
    ##  => [[:rest]]
    if Browser.method(:new).parameters.flatten.count == 1
      browser = Browser.new(
        ua: req.user_agent,
        accept_language: req.env['HTTP_ACCEPT_LANGUAGE']
      )
    else
      ## Browser.method(:new).parameters.flatten
      ## => [:req, :user_agent, :keyrest, :kwargs]
      browser = Browser.new(
        req.user_agent,
        accept_language: req.env['HTTP_ACCEPT_LANGUAGE']
      )
    end
  encoder = Ungarbled::Encoder.new(browser, @options)
  status, headers, res = @app.call(env)
  disposition = headers[DISPOSITION_KEY]

  if disposition
    headers[DISPOSITION_KEY] =
      encode_disposition(encoder, disposition)
  end

  [status, headers, res]
end

#encode_disposition(encoder, disposition) ⇒ Object 



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# File 'lib/ungarbled/middleware.rb', line 44

def encode_disposition(encoder, disposition)
  replacing = DISPOSITION_REGEX.match(disposition)[1]
  replaced = encoder.encode(replacing)
  disposition.gsub(replacing, replaced)
end