Ethereal-dev: [Ethereal-dev] Support for PCRE pattern matching in dfilters

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From: Biot Olivier <Olivier.Biot@xxxxxxxxxxx>
Date: Tue, 2 Dec 2003 23:06:03 +0100 
Hi all,

Attached patch implements Perl Compatible Regular Expressions in Ethereal
display filters with the "matches" operation. The patch includes all
required autotools gizmos, and libpcre is not required but will be looked
for if available (similar to zlib support).

I tested it with automake 1.4-p6 (freshly installed it some hours ago).

Please review and check in.

I still need to work on the regular expressions (RE) options, but I first
want to know which would be the best place to (already) optimize the code.

The current implementation compiles the RE and evaluates it afterwards for
every matching filterable header field. I want to store the compiled (and
possibly also studied) RE once at dfilter parsing time. I was thinking at
doing this by means of a private FT_PCRE type, containing a struct with a
pcre * and a pcre_extra *.

Fire your comments!

Regards,

Olivier

Attachment: patch-pcre.diff.gz
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