Re: Finding intermediate token in a string

[steve donovan <steve.j.donovan@...>]

On Mon, Jul 7, 2014 at 9:18 AM, Austin Einter <austin.einter@gmail.com> wrote:
> Please note that, input string might have some data before or after of given
> example values.

How about something really simple?

local lens = input:match('^Content%-Length%s*:%s+(%d+)%s+$')
if lens then -- gotcha Content-length
   len = tonumber(lens)
end

Note how '-' must be escaped...%s matches all whitespace, including line ends.