class RackProf

# File lib/rack_prof.rb, line 16
def initialize(app, options = {})
  @app = app
end

# File lib/rack_prof.rb, line 20
def call(env)
  request = Rack::Request.new(env)
  if request.params.delete('profile')
    profile(env, request)
  else
    @app.call(env)
  end
end

# File lib/rack_prof.rb, line 70
def camel_case(word)
  word.to_s.gsub(/(?:^|_)(.)/) { $1.upcase }
end

# File lib/rack_prof.rb, line 48
def get_file_name(request, printer)
  path = request.path.gsub('/', '-')
  path.slice!(0)
  base_name = PRINTERS[printer]
  File.join(Dir.tmpdir, "#{path}-#{base_name}")
end

# File lib/rack_prof.rb, line 55
def parse_printer(printer)
  if printer.nil?
    DEFAULT_PRINTER
  elsif printer.is_a?(Class)
    printer
  else
    name = "#{camel_case(printer)}Printer"
    if RubyProf.const_defined?(name)
      RubyProf.const_get(name)
    else
      DEFAULT_PRINTER
    end
  end
end

# File lib/rack_prof.rb, line 41
def print(result, printer, file_name)
  File.open(file_name, 'wb') do |file|
    printer.new(result).print(file, :min_percent => 1)
  end
  file_name
end

# File lib/rack_prof.rb, line 31
def profile(env, request)
  response = nil
  result = RubyProf.profile { response = @app.call(env) }
  printer = parse_printer(request.params.delete('printer'))
  file_name = get_file_name(request, printer)
  print(result, printer, file_name)
  Launchy.open(file_name)
  response
end