REFindNoCase with variable length string

[suntin]

regexpClause = "REFindNoCase('^[0-9\-\+\(\)]{" & numLength & "}+$',str)";
if (regexpClause) {
return true;
}


It errors out saying the expression needs a constant value. as I am expecting
1 of 2 possible string lengths I need to use a variable rather than hardcoding
a number into the expression. Has anyone tried this before or know of a
succesful way to do it?

[Adam Cameron]

On Thu, 21 Apr 2005 06:57:05 +0000 (UTC), suntin wrote:

> regexpClause = "REFindNoCase('^[0-9\-\+\(\)]{" & numLength & "}+$',str)";

Can you combine {} and + as a modifier for a character set? {x} means
exactly x times. + means one or more times. Which is it? Or does {x}+
one or more groups of those (exactly) five chars? Regex coach says that's
not allowed. NOt that Regex Coach is for specifically testing
CF-implemented regexes, but it looks odd to me too.

But let's ignore that for the time being...

> It errors out saying the expression needs a constant value. as I am expecting
> 1 of 2 possible string lengths

Have you tried creating the regex as a separate string, first?

regex = '^[0-9\-\+\(\)]{" & numLength & "}+$';
regexpClause = "REFindNoCase(regex, str)"; // I'm guessing you're
evaluating this at some point?

(sorry, I'd normally test these suggestions before making them, but I'm in
a rush to get out the door and into the sunshine today ;-)

--

Adam

[suntin]

ohhh, to be out in the sunshine....

I've tried to do do the following:

if (eval("REFindNoCase('^[0-9\-\+\(\)]{" & numLength & "}+$',str)")) {
return true;
}



regexpClause = "REFindNoCase('^[0-9\-\+\(\)]{" & numLength & "}+$',str)";
if (regexpClause) {
return true;
}



regexpClause = "^[0-9\-\+\(\)]{"&numLength&"}+$";
if (REFindNoCase(regexpClause,str)) {
return true;
}

It doesn't "appear" to mind the + symbol, instead it is saying that it
requires a constant not a variable. I fear this may be exactly as it says and
simply a coldfusion limitation so I just ended up writing two seperate
functions (1 for each expected string length) but oh how the good developer
inside me weeps...