use the non-greedy .+? modifier + the optional group (?: ... )*
my $test = "Server list (Win2K/Win2003/XP) 6.26.5.1.5";
my $test1 = "Server list 6.26.5.1.5";
# $test =~ /(.*)(\(.+\))(.*)/;
my $regexp = qr{ # note: greedy (.+) vs. non-greedy (.+?)
+qf.
(.+?) # capture what comes but look ahead => $1
\s* # optional whitespace
(?: # start optional group (?: ... )?
\( # opening bracket
([^)]+) # get what's in the bracket => $2
\) # closing bracket
)? # - optional
\s* # possibly followed by some whitespace
([\d.]+) # then look for numbers and dots => $3
$ # which is anchored at the string end
}x;
if( $test =~ /$regexp/ ) { # if( $test1 =~ /$regexp/ )
my ($prod_name, $platform, $version) = ($1, $2, $3);
if(defined $platform) {
print "$prod_name, $platform, $version"
}
else {
print "$prod_name, <none>, $version"
}
}
Regards
mwa