Re: parsing IP address.

["Jerome Vuarand" <jerome.vuarand@...>]

2008/9/17  <adimurthy.sriramulu@wipro.com>:
> In my project requirement there is a lua wrapper function which is
> function pointer and takes any C function name and its parameters as
> input and execute that C function.
> Ex:- vxDo("functionname","memStats","murthy",1,2)
>
> its works fine for strings,integers as function parameters as mentioned
> above.However if we pass IP address ie for example "169.254.0.4" as
> input then its takes as integer and reads only first element 169 and
> system hangs.ex:-vxDo("functionname","169.254.0.4","memStats",1,2)
>
> It will be gratefull if somebody throws some light on how to parse the
> whole IP address in lua.

Do you want to pass the ip address as an int ? If so you can use the
following code:

function iptonumber(str)
	local num = 0
	for elem in str:gmatch("%d+") do
		num = num * 256 + assert(tonumber(elem))
	end
	return num
end