Dennis,
Sorry for the delay, been out the past couple of days.
My use of the parenthesis came from a couple of things. They were described as grouping characters together which made me think I needed them to identify the .xml as a group I wanted to match. Couple that with all the examples I found of using $ only matched the last character of a string. I didn't see any where it matched a group of characters at the end.
I left them in the expression because I felt it made the statement more readable for someone coming behind me. It seems more intuitive to have (.xml)$ than .xml$ in the pattern.
Rick
-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Dennis Lovelady
Sent: Monday, May 03, 2010 3:07 PM
To: 'RPG programming on the IBM i / System i'
Subject: RE: File name regular expression
Thanks Dennis. That was it. I kept the original expression and just
inserted a * after [A-Z0-9].
I have a question (or two) about your expression.
1) I re-read the wikipedia site and I get the * after [A-Z0-9], but I
don't get the * at the end. Shouldn't that be $ to look for .xml at
the end of the name?
Glad to help. Yes, that splat was a typo.
2) If the parenthesis are removed does ^ and $ still match the pfi_
and .xml strings respectively or just a single character?
Breaking this down: ^pfi_
String must begin with pfi_. Nothing can precede the p, f must follow the p, ...
Same with the $ - the characters xml (in that order) must end the string.
I am not sure what you read that led you to believe the parentheses were doing you some service. I will be happy to address and/or attempt to interpret (translate) the phrase that led you that direction, if you can find it.
Dennis Lovelady
http://www.linkedin.com/in/dennislovelady
--
"The only kind of love that makes a lifetime Into a life well lived, The only kind of love that ever fills you, Is the love you give."
-- David Wilcox
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