Forum Discussion

Richard_Jones's avatar
Richard_Jones
Icon for Nimbostratus rankNimbostratus
Jun 22, 2011

Different results from TCL regexp and iRules regexp

I am working on an iRule that will validate the value of a parameter only contains a-z, 0-9, and / + =. I have created a regexp pattern that works in TCL, but not in an iRule:     TCL:   ...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Jun 23, 2011
Now that you've figured out the regex option you could try using scan as well. scan is typically more efficient than a regex. 

   if {[scan $str {%[a-z0-9/+=]} match] and $match eq $str}{
      log local0. "matched $str"
   } else {
      log local0. "no match for $str"
   }


foreach str [list "1234" "asdf" "wqer!" "asfd/"] {
   if {[scan $str {%[a-z0-9/+=]} match] and $match eq $str}{
      log local0. "matched $str"
   } else {
      log local0. "no match for $str"
   }
}

matched 1234

matched asdf

no match for wqer!

matched asfd/

Aaron