You're examples are not very clear, but I think what you are saying is that
you don't want characters that are already escaped to have their leading '&'
escaped again.
un-escape all characters first, before escaping them again so solve your
problem.
string = replace(string,"&","&","all")>
string = replace(string,"&","&","all")>
This ensures that you will never have '&' in your string.
+-----------------------------------------------+
Bryan Love
Macromedia Certified Professional
Internet Application Developer
Database Analyst
Telecomunication Systems
[EMAIL PROTECTED]
+-----------------------------------------------+
"...'If there must be trouble, let it be in my day, that my child may have
peace'..."
- Thomas Paine, The American Crisis
-----Original Message-----
From: Gyrus [mailto:[EMAIL PROTECTED]]
Sent: Thursday, December 13, 2001 1:33 PM
To: CF-Talk
Subject: regex for escaping ampersands
As part of a mammoth custom tag to clean up HTML
markup submitted through a form, I'm trying to work out how
to escape all ampersands.
Only, of course, I don't want to escape those that are
already part of character entities. So I want this:
<a href="index.cfm?action=home.welcome&msg=1">
Go to home page & see a message</a>
to become this:
<a href="index.cfm?action=home.welcome&msg=1">
Go to home page & see a message</a>
BUT I obviously don't want this:
<a href="index.cfm?action=home.welcome&msg=1">
Go to home page & see a clichéd message</a>
to become this:
<a href="index.cfm?action=home.welcome&amp;msg=1">
Go to home page &amp; see a clich&eacute;d message</a>
Catching numeric entities seems fine - just match against
"&[^#]". But what about the named entities? I've got a list
of them, but I don't think
&[^(#|lsquo;|rsquo;|sbquo;|ldquo;|rdquo;|bdquo;|dagger;)]
works, cos the [] character class can only match one character
at a time. I'm working my way through Jeffrey Friedl's book on
regular expressions, but I've not found a solution yet.
Any offers?
- Gyrus
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