Re: Detecting/parsing a hex string

[David Fifield <david () bamsoftware com>]

On Wed, Oct 08, 2008 at 08:23:52PM -0600, Patrick Donnelly wrote:
> On Wed, Oct 8, 2008 at 12:22 PM, David Fifield <david () bamsoftware com> wrote:
> > > 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
> >
> > I suspect this won't work when the string is long enough to overflow the
> > capacity of a double, which a 128-bit key will be.
>
> The code I gave works on two characters at a time...

Ah, you're completely correct of course. Forgive me for not reading
carefully enough.

David Fifield

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