[SR-Users] Using =~ to get the group identifier with longest match

[David Villasmil]

Hello Iñaki,

I did this a long time ago using a db backend, i can't remember exactly how.

the table would be:

areacode, route
1                 route1
13               route2

I connected to mysql and ran something like:

select * from routes where '$rU' like concat(areacode,'%') order by
len(areacode) desc limit 1;


that works perfectly

hope it helps

David
On Mon, Jun 6, 2011 at 10:25 AM, Iñaki Baz Castillo <ibc at aliax.net> wrote:

> Hi, I wonder how feasible is the folowing:
>
> I have a regular expresion like:
>
>  REGEXP = "^((1|20)|(13|3|4)|(5|6))"
>
> There are 3 matching groups:
>
>  1)   (1|20)
>  2)   (13|3|4)
>  3)   (5|6)
>
> I want to match the RURI user, let's suppose $rU = "138787686223". In
> this case the above regexp matches groups 1 and 2, but since group 2
> matching is longest ("13" is longest than "1") I want to get value 2.
>
> In case $rU = "999999" I need to get "null", in case $rU =
> "1000022323" I need to get "1".
>
> AFAIK there is no way to do it with current regular expression utils
> in Kamailio, but maybe I miss something. Thanks a lot.
>
>
> --
> Iñaki Baz Castillo
> <ibc at aliax.net>
>
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