[Bro-Dev] #859: to_double bif

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#859: to_double bif
------------------------+-----------------------------
 Reporter:  scampbell   |       Type:  Feature Request
   Status:  new         |   Priority:  Normal
Milestone:  Bro2.1      |  Component:  Bro
  Version:  git/master  |   Keywords:  bif
------------------------+-----------------------------
 It would be quite useful to include a to_double bif as the new input
 framework makes this sort of thing much more common when digesting logs.

 sample code:

 ## Converts a :bro:type:`string` to a :bro:type:`double`.
 ##
 ## str: The :bro:type:`string` to convert.
 ##
 ## Returns: The :bro:type:`string` *str* as double, or 0 if *str* has
 ##          an invalid format.
 ##
 function to_double%(str: string%): count
         %{
         const char* s = str->CheckString();
         char* end_s;

         double d = (double) strtod(s, &end_s);

         if ( s[0] == '\0' || end_s[0] != '\0' )
         {
                 builtin_error("bad conversion to count", @ARG@[0]);
         d = 0;
         }

         return new Val(d, TYPE_DOUBLE);
         %}

-- 
Ticket URL: <http://tracker.bro-ids.org/bro/ticket/859>
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