From: "Iñaki Baz Castillo" <ibc@...>
Date: 2009-02-21T01:08:19+09:00
Subject: Re: Un-escaping hexadecimal code [SOLVED using CGI]

El Viernes, 20 de Febrero de 2009, Iñaki Baz Castillo escribió:
> Hi, I receive a String allowing hexadecimal escaping by using %XX syntax:
>
>   %61lice => alice   ( %61 == a )
>
> I would like to un-escape the string. I've got it using "eval" but I'd
> prefer avoiding using "eval":
>
>   string = "%61lice"
>   string = eval %{ "#{ string.gsub(/%/,'\x') }" }
>   => "alice"
>
> How could I avoid the usage of "eval" to un-escape the string?

Ops, it is easier than above. CGI lib already does it:

  require 'cgi'
  CGI.unescape("%61lice")
  => "alice"

:)



-- 
Iñaki Baz Castillo