Wildcard characters in Inno Setup (test if there is any value after fixed string prefix)

Question

Is there some wildcard characters for Inno Setup? I am trying to go through string and if there is some value that I'm searching for, the program should return 1 (I'm using Pos() function that already does what I need), but my problem here is that the part of string that I'm searching for is not static, so I need some wildcard character like * that can replace one or more characters.

Answer 1

There was no pattern matching functionality in Inno Setup Pascal Script until recently. Since 6.1, you can use the WildcardMatch function (as the answer by @Roman shows).

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If you are stuck with an older version, or if you need a custom matching, you can use a function like this:

function AnythingAfterPrefix(S: string; Prefix: string): Boolean;
begin
  Result := 
     (Copy(S, 1, Length(Prefix)) = Prefix) and
     (Length(S) > Length(Prefix));
end;

And use it like:

if AnythingAfterPrefix(S, 'Listing connections...') then

You may want to add TrimRight to ignore trailing spaces:

if AnythingAfterPrefix(TrimRight(S), 'Listing connections...') then

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Similar questions:

• Regular expression for string in Inno Setup
• Basic email validation within Inno Setup script

Answer 2

According to the documentation there are now

function IsWildcard(const Pattern: String): Boolean;
function WildcardMatch(const Text, Pattern: String): Boolean;

maybe they were added recently. Should do what you needed.