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
