From: Logan Capaldo <logancapaldo@...>
Date: 2007-05-23T01:42:01+09:00
Subject: Re: Partial Regular Expression Matching

On Tue, May 22, 2007 at 03:20:04PM +0900, Hans Fugal wrote:
> I would like to identify partial matching of a regular expression, for a 
> stream of input, as described in the pcrepartial(3) manpage. Is this 
> possible with ruby Regexp, or would I have to wrap (a piece of) pcre? 
> (or implement my own regular expression engine, hah!)
> 
> As an aside, what I am really trying to do is write a lexer that works 
> on stream input, and can decide whether any of the eligible tokens match 
> before reading EOF (which may be a long, long way off both in bytes and 
> time). If you can think of another approach (that still uses regexes) 
> that'd work too.
Why not use rex?
Also StringScanner may be helpful for this.
> 
> Thanks
> 
> 1. http://www.gammon.com.au/pcre/pcrepartial.html