Re: Detecting/parsing a hex string

["Patrick Donnelly" <batrick.donnelly () gmail com>]

On Wed, Oct 8, 2008 at 5:25 AM, Ron <ron () skullsecurity net> wrote:
> Hi all,
>
> I need to detect whether or not a string is an ascii representation of a hex
> string (eg, "12ab3d1a3badabeea1...."), and, if it is, to convert it to a
> binary string. Is there an easy way to do that (maybe with
> bin.pack/bin.unpack)?
>
> Thanks,
> Ron

a = "414243"
if string.find(a, "^%x+$") then
  a = string.gsub(a, "%x%x", function(a) return
string.char(tonumber(a, 16)) end) --> a = "ABC"
end


-- 
-Patrick Donnelly

"One of the lessons of history is that nothing is often a good thing
to do and always a clever thing to say."

-Will Durant

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