Hello,

using the latest development work and the newest pseudo-variable&transformation framework (http://lists.kamailio.org/pipermail/users/2008-December/020918.html), the textops module offers a new class of transformation for regular expressions.

By now, it implements {re.subst,expression} - ability to do Perl-like substitution of string value pseudo-variables: http://www.kamailio.org/dokuwiki/doku.php/transformations:devel#re.subst_exp...

Here is an example to extract username part from R-URI using this transformation:

$var(user) = $(ru{re.subst,/^sip:(.*)@(.*)/\1/});

Now, the subst operation becomes very handy, old tricks to copy in R-URI and use subst*() functions from textops module, or copy in avps and use avpops module are no longer required.

This implementation can be used as example by developers to learn how to export new transformations from other modules.

Cheers, Daniel