require 'benchmark'
require 'paramer'

class String
  def pad_to(size)
    spaces = size - length
    return self unless spaces > 0
    spaces.times { self << " " }
    self
  end
end

def bench(name, options={})
  $stdout.print "#{name} ".pad_to(33)
  $stdout.flush
  result = Benchmark.measure { yield }
  puts "#{result.real} seconds"
end

def run(name, string)
  puts name
  bench("- only scanning then injecting:") { string.scan_then_inject }
  bench("- scanning groups and injecting:") { string.scan_groups_then_inject }
  bench("- scanning then splat hashing:") { string.scan_then_splat_hash }
  bench("- splitting then splat hashing:") { string.split_then_splat_hash }
  puts
end

TINY = ("foo=bar&this=that&klass=eigen=_method=get&" * 500).freeze
MED = (TINY * 10).freeze
LONG = (MED * 10).freeze

run "Running with tiny string", TINY
run "Running with medium string", MED
run "Running with ridiculous string", LONG