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From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: Practicalities of Ada for app development
Date: Thu, 14 Jun 2012 00:35:57 -0700 (PDT)
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Date: 2012-06-14T00:35:57-07:00
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quiet_lad wrote on comp.lang.ada:
> I do not insist. =A0I just see regex used and am amazed there is
> alternative. =A0I am also glad there is one.

Apart from Ada.Strings.Fixed.Index and Ada.Fixed.Strings.Find_Token,
the language does not impose any serious pattern matching.  However
GNAT comes bundled with both regular expression (GNAT.Regexp) and
SNOBOL4 pattern matching engines (GNAT.SPITBOL.Patterns).

As Maciej rightly pointed out, regular expressions must be compiled
at run time (GNAT.Regexp.Compile).  One place where I used GNAT.Rexegp
long ago is in the regexp-based spam filter I wrote for myself.  It
reads regular expressions defining spam from my ~/.emacs file,
compiles each in turn and applies the filter to incoming mail
retrieved from a POP3 server.

http://www.ada-france.org:8081/branch/changes/org.ludovic-brenta.spamkiller

--
Ludovic Brenta.