[Toybox] [New Toy] : add udhcpd

[Ashwini Sharma]

Hi All,

   Modified the code to avoid usage of _goto_.
Attached is the updated patch.

regards,
Ashwini
On Tue, Aug 13, 2013 at 1:03 AM, Isaac <ibid.ag at gmail.com> wrote:

>  On Mon, Aug 12, 2013 at 06:29:25PM +0900, Ashwini Sharma wrote:
> > Hi Rob,
> >
> >  In the continuation to DHCP client sent to you last week, attached here
> > with is the DHCP server implementation.
> >
> > Have a look at the same and let me know for any comments.
> >
> > regards,
> > Ashwini
>
> Note: these are my comments and not Rob's.
>
> I note that not all of the uses of goto are neccessary.
> Here's an example of what I refer to:
>
>   if (buffer[0] == '#' || buffer[0] == '\n') goto free_buffer;
>   //parse buffer here
> free_buffer:
>   free(buffer);
>
> can readily become
>   if (buffer[0] != '#' && buffer[0] != '\n') {
>     //parse buffer here
>   }
>   free(buffer);
>
> Of course, for a buffer there's toybuf, which is not to be free()ed.
>
> There will be places where you need to use goto if you don't check
> 3 different variables, but for cases where you aren't jumping out of
> a loop, the if () {} approach makes it much clearer that the code
> is conditionally executed.
>
> Thanks,
> Isaac Dunham
>
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