Hi Inaki,

that works with string transformations: - in older versions, use s.substr - in last one there is s.strip

Cheers, Daniel

On 9/16/10 8:28 PM, Iñaki Baz Castillo wrote:

2010/9/16 Iñaki Baz Castilloibc@aliax.net:

...

Hi, I get a prefix string from a database and store it in $var(prefix). Such prefix can contain any number of digits (no fixed length). Now I must to check if the RURI username begins with that prefix and in that case strip it.

I can get the first step (detect it) using pcre_match function:

if pcre_match("$rU", "^$var(prefix)") { # Prefix match.

But I cannot get the second part working (stripping it). I've tryed everything:

• strip() is not valid as just allows an integer (no pv).

• subst_user() doesn't accept pv: if subst_user("/^$var(prefix)(.*)$/\1/")

Any ideas please? Thanks a lot.

Finally I got it in an ugly way (assuming that prefix has as maximun 7 digits):

---

 # Check that the dialed number begins with the
 # configured 'prefix_in'. If not drop the call.
 #
 if ! pcre_match("$rU", "^$var(prefix)") {
   xlog("L_NOTICE", "prefix doesn't match =>403\n");
   send_reply("403", "Forbidden: Wrong Prefix");
   exit;
 }

 # If so, strip the prefix.
 #
 $var(prefix_in_length) = $(var(client_prefix_in){s.len});
 switch($var(prefix_in_length)) {
   case 1:
     strip(1);
     break;
   case 2:
     strip(2);
     break;
   case 3:
     strip(3);
     break;
   case 4:
     strip(4);
     break;
   case 5:
     strip(5);
     break;
   case 6:
     strip(6);
     break;
   case 7:
     strip(7);
     break;
 }

---

Any suggestion providing a more ellegant way is welcome :)