local url = {}
  
  local function decode_func(c)
  	return string.char(tonumber(c, 16))
  end
  
  local function decode(str)
  	local str = str:gsub('+', ' ')
  	return str:gsub("%%(..)", decode_func)
  end
  
  function url.parse(u)
  	local path,query = u:match "([^?]*)%??(.*)"
  	if path then
  		path = decode(path)
  	end
  	return path, query
  end
  
  function url.parse_query(q)
  	local r = {}
  	for k,v in q:gmatch "(.-)=([^&]*)&?" do
  		r[decode(k)] = decode(v)
  	end
  	return r
  end
  
  return url