| From: | Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Stephen Frost <sfrost(at)snowman(dot)net>, Simon Riggs <simon(at)2ndQuadrant(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Future of our regular expression code |
| Date: | 2012-02-18 23:12:09 |
| Message-ID: | m2aa4fg2ie.fsf@2ndQuadrant.fr |
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| Lists: | pgsql-hackers |
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
> Yeah ... if you *don't* know the difference between a DFA and an NFA,
> you're likely to find yourself in over your head. Having said that,
So, here's a paper I found very nice to get started into this subject:
http://swtch.com/~rsc/regexp/regexp1.html
If anyone's interested into becoming our PostgreSQL regexp hero and
still needs a good kicker, I would recommend starting here :)
I see this paper mention the regexp code from Plan9, which supports both
UTF8 and other muti-byte encodings, and is released as a library under
the MIT licence:
http://swtch.com/plan9port/unix/
Regards,
--
Dimitri Fontaine
http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
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