From: "David A. Black" <dblack@...>
Date: 2005-08-12T11:03:54+09:00
Subject: Re: Regular Expression question

Hi --

On Fri, 12 Aug 2005 tuyet.ctn@mscibarra.com wrote:

> Hi,
>
> How do I extract CYZ-EdEi8QBzG2f3m7prHw99 from the sessionId text
> below.  The reg expression I have is partially working.  It returns CYZ
> but I want the whole string CYZ-EdEi8QBzG2f3m7prHw99
> Your help is appreciated.  I've used RegEx coach tool but didn't come
> up with a good expression.  Thanks.
>
> irb(main):100:0> puts sessionId
> <FRAMESET border=0 frameSpacing=0 rows=0,* frameBorder=0><FRAME
> border=0 name=re
> lay marginWidth=0 marginHeight=0 src="/include/blank.html"
> frameBorder="" noResi
> ze scrolling=no><FRAME border=0 name=main marginWidth=0 marginHeight=0
> src="/ara
> neae/Analysis/home?common.sessionId=CYZ-EdEi8QBzG2f3m7prHw99"
> frameBorder=0 scro
> lling=no></FRAMESET>
> => nil
> irb(main):101:0> sessionId2 = sessionId[/sessionId=\w+/]
> => "sessionId=CYZ"

The hyphen character isn't part of the \w character class.  Try this:

   sessionId2 = /sessionId=([-\w]+)/.match(str).captures[0]

(although you should probably have a test in there to make sure the
match worked).  This will give you just the CYZ... part, but you can
adjust that easily.


David

-- 
David A. Black
dblack@wobblini.net