Thank you!
This looks much cleaner. ________________________________ From: Jialin Li [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 15, 2008 8:56 PM To: Ley, Chung Cc: beginners@perl.org Subject: Re: Regular Expression Help my $input =q(C:\Windows\%Person%\%Class%); my @vars = $input =~ /%([^%]+)%/g; local $, = $/; print @vars; On Tue, Apr 15, 2008 at 10:20 PM, Ley, Chung <[EMAIL PROTECTED]> wrote: Hi, I have a program that will take in a string that will resolve to a path where the output is going to store. The path can includes "variables" in this format "%<VariableName>%". The acceptable variableNames that the program will support are fixed to a list such as "Person", "Class", "Dept". This list may grow in the future; but for now it is fixed. So, some of the acceptable strings are: C:\Windows\%Person%\%Class% C:\MyHomeDir\%Dept%\%Person% C:\MyHomeDir\%Dept%_%Person% and etc... I like to develop a validate method to return false when the string in between the % pair don't belong to the acceptable list, and was trying to do that with an expression. - Look for the string that is in between the "%" by the closest pair. - The "%" pair must start at the "odd" occurrence and finish on the "next even" occurrence... Don't know how to describe this exactly, but I don't want it to pack this up ("InBetween") from this (C:\MyHomeDir\%Dept%InBetween%Person) even though it is in between a % pair. - Then compare the string within the "%" pair to see if it belongs to the "acceptable" list or not. Is using a regular expression the right approach here? or I should just iterate thru? Thanks... --Chung Ley
