Re: Need regexp source

Markus Mottl <mottl@miss.wu-wien.ac.at>
9 Jan 2000 22:49:11 -0500

          From comp.compilers
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From: Markus Mottl <mottl@miss.wu-wien.ac.at>
Newsgroups: comp.compilers,comp.lang.c
Date: 9 Jan 2000 22:49:11 -0500
Organization: University of Economics and Business Administration, Vienna, Austria
References: 00-01-006
Keywords: lex

In comp.compilers balachandr@yahoo.com wrote:
> I am looking for a C source code for regexp which uses a iterative
> routine for pattern matching instead of a recursive routine. If you
> know the location or have the source code, please let me know.
> [There's always lex, I suppose. Is there a reasonable way to do interative
> regex matching without all of the work of building a DFA first? -John]


If you are satisfied with styles other than "regexp", try the PCRE
(Perl Compatibility Regular Expressions):


    ftp://ftp.cus.cam.ac.uk/pub/software/programs/pcre


It has a function for "studying" regular expressions, which, AFAIK, builds a
DFA "on the fly". Very fast...


Regards,
Markus Mottl
--
Markus Mottl, mottl@miss.wu-wien.ac.at, http://miss.wu-wien.ac.at/~mottl

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