Class: WebConsole::Injector

Inherits:
Object
  • Object
show all
Defined in:
lib/web_console/injector.rb

Overview

Injects content into a Rack body.

Instance Method Summary collapse

Constructor Details

#initialize(body, headers) ⇒ Injector

Returns a new instance of Injector.



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# File 'lib/web_console/injector.rb', line 6

def initialize(body, headers)
  @body = "".dup

  body.each { |part| @body << part }
  body.close if body.respond_to?(:close)

  @headers = headers
end

Instance Method Details

#inject(content) ⇒ Object 



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# File 'lib/web_console/injector.rb', line 15

def inject(content)
  # Set content-length header to the size of the current body
  # + the extra content. Otherwise the response will be truncated.
  if @headers[Rack::CONTENT_LENGTH]
    @headers[Rack::CONTENT_LENGTH] = (@body.bytesize + content.bytesize).to_s
  end

  [
    if position = @body.rindex("</body>")
      [ @body.insert(position, content) ]
    else
      [ @body << content ]
    end,
    @headers
  ]
end