[SR-Users] Text transformations s.select and newline char

[Martin Nyström]

Thanks,

I did as previously suggested and used line.at instead. It works so my issue can be considered solved. But yes, I agree it can be a useful feature to introduce.


/M

From: Daniel-Constantin Mierla <miconda at gmail.com>
Reply to: "miconda at gmail.com" <miconda at gmail.com>
Date: Thursday, 20 May 2021 at 13:28
To: "Kamailio (SER) - Users Mailing List" <sr-users at lists.kamailio.org>, Martin Nyström <martin.nystrom at connectel.se>
Subject: Re: [SR-Users] Text transformations s.select and newline char


Hello,

the separator has to be a single character as documented:

  * https://www.kamailio.org/wiki/cookbooks/5.5.x/transformations#sselect_index_separator

It does not support variables.

Looking at the code, it also does not support escaped characters, probably this feature can be useful to introduce.

Cheers,
Daniel
On 17.05.21 12:03, Martin Nyström wrote:
Hello,

I am simply trying to parse a SDP body, read it line by line and save the line into a variable for further processing. It seems when using a newline \n as the delimiter it breaks down with errors. How should I treat this issue and properly managed the newline as delimiter?

May 17 12:00:00 ip-10-120-120-12 kamailio[12878]:  0(12878) ERROR: pv [pv_trans.c:2326]: tr_parse_string(): invalid select transformation: select,$var(i),$var(delimeter)}!!
May 17 12:00:00 ip-10-120-120-12 kamailio[12878]:  0(12878) ERROR: <core> [core/pvapi.c:1717]: tr_lookup(): error parsing [{s.select,$var(i),$var(delimeter)}]


Block extracted from .cfg

sdp_get("$avp(sdp)");
$avp(lines) = $(avp(sdp){line.count});
$var(delimeter) = "\n";

$var(i) = 0;
while($var(i) < $avp(lines)) {

        # This works
        xlog("L_INFO", "==> Position $var(i): $(avp(sdp){s.select,$var(i),\n}) \n");

        # This fails
        $var(l1) = $(avp(sdp){s.select,$var(i),$var(delimeter)});

        # This fails
        $var(l2) = $(avp(sdp){s.select,$var(i),\n});

        # This fails
        $var(l3) = $(avp(sdp){s.select,$var(i),\\n});

        # Supposed to do something funny with the $var(line) here

        $var(i) = $var(i) + 1;

}



/M



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