Jeremy Allen said:
> <CFSET strFoo = REReplaceNoCase(strFoo,"</?script.*>","<BAD>","ALL")>
> the "script.*" portion of the regex searches ALL the way
> to the end of the string and then it goes backwards one
> character at a time until it finds the closing ">"
> How to fix this?
> $strFoo =~ s/<\/?script.*?>/<BAD>/ig;
You are correct in your non-greedy needs. :) Quick lesson on
greedy (.*) versus non-greedy (.*?). (More for the benefit of
the list than you in particular.) The documentation you read
on greedy versus non-greedy is correct, if a bit confusing.
"The question [sic] mark says to backtrack fowards in stead of
backtrack backwards."
Basically, think of it this way: as you said, the ".*>" finds the
last occurance of ">" that it can. In technical jargon, we say
that it "slurps" everything in between, which is why we call it
greedy. Non-greedy, then, does the exact opposite: it finds the
first match of ">" that it can and only slurps up the bare minimum.
Now, having said all of that, I'm going to tell you that CF
doesn't seem to have non-greedy matching for regexs. (At least,
not as near as I've been able to figure out.) Even Perl only
finally just got them in version 5. (Right? I think.)
The workaround? It's not as elegant, but it's not too bad:
</?script[^>]*>
Basically, if you can't read regex, it's just saying that you
want to match any character that's not a ">", zero or more times.
Since it's not ".*", it's not greedy. Pretty much exactly what
you need.
Of course, this has problems with the following scenario:
<script type="JavaScript" hack=">">
But technically, that's not legal HTML anyway.
>My conclusion is this.. ColdFusion and Javascript regex
>are crippled..
Slightly. :)
-Rick
------------------------------------------------------------------------------
Archives: http://www.mail-archive.com/[email protected]/
To Unsubscribe visit
http://www.houseoffusion.com/index.cfm?sidebar=lists&body=lists/cf_talk or send a
message to [EMAIL PROTECTED] with 'unsubscribe' in the body.
