firefox.rb

require 'tempfile'

class Firefox
  def self.debug(page)
    if page.is_a? File
      page = page.read
    elsif page.respond_to?(:body) and page.body.is_a? String
      page = page.body
    end

    Tempfile.open("temp_file") do |f|
      f.write(page)
      path = f.path
      path = windozify_path(f.path) if f.path =~ /cygdrive/
      `firefox #{path} &`
    end
  end

  def self.windozify_path(path)
    path.gsub!('/cygdrive/c', 'C:')
    "file:///#{path}"
  end
end