Subj : PCRE in Synchronet?
To   : Angus Mcleod
From : Digital Man
Date : Fri Dec 17 2004 02:10 pm

  Re: PCRE in Synchronet?
  By: Angus Mcleod to Digital Man on Fri Dec 17 2004 07:35 am

 > Quick question:  Can SBBS do Perl-compatible Regular Expressions?

Not currently.

 > I know that (for instance) ./text/name.can uses it's own type of pattern
 > specifiers.  Yet JS uses a Perl-type syntax for RE's in the match()
 > function.  I'm just curious to know if it would be possible to use
 > Perl RE syntax from within the C code itself or if that's limited to JS
 > only.

I don't see a function in the SpiderMonkey API to handle regexp's natively. It
does contain private functions to handle regexp's (see include/mozilla/js/
jsregexp.h), but it's very JS-centric (deals with JS contexts and strings and
such).
 
 > I'm thinking in particular of the "Twit filter" stuff.  It's great, but
 > pretty rudimentary.  I'd have a go at making some small improvements, but
 > RE's would really help.

The twitlist.cfg supports the same pattern matching specifiers as the .can
files. If you don't find these specifiers sufficient, you could always enhance
str_util.c:findstr().

For full PCRE support, a 3rd party cross-platform RE library would need to be
utilized or figure out someway to use the spidermonkey RE code (assuming you
don't want to create one from scratch). 

                                                  digital man

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