This code might point you in the right direction.

use strict;
my $slurpedfile = 
q{Blah blah blah
blah blah Blah // single line c++ comment
more blahs "quoted string with /* " blah
blah blah blah /* single line c comment */ blah
blah blah /*
    multi line 
    c style comment */
some more blahs
// another single line c++ comment
blah blah blah
};
my @matches =  $slurpedfile =~
m{
     ( /\* .*? \*/) | ( \/\/[^\n]*)           
     | " (?: [^"\\]* | \\. )* "               
     | ' (?: [^'\\]* | \\. )* '               
     | . [^/"']*                              
   }xgs;
@matches = grep {defined $_} @matches; #get rid of undefs
my $linenum = 1;
foreach my $match (@matches) {
        $slurpedfile =~ /\Q$match/;
        my $before = $`;
        $slurpedfile = $';
        my $matched = $&;
        $linenum += $before =~ tr/\n/\n/;
        print "$match\n is on line $linenum\n\n";
        $linenum += $match =~ tr/\n/\n/;
}
__OUTPUT__
// single line c++ comment
 is on line 2

/* single line c comment */
 is on line 4

/*
        multi line
        c style comment */
 is on line 5

// another single line c++ comment
 is on line 9
[download]

It will screw up if you have the same comment in a quoted string near the comment itself, like this:

comment = ' /* comment */ ';
/* comment */
[download]

but maybe you can fiddle with $slurpedfile =~ /\Q$match/; to take care of that case.

--

flounder

---

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