use strict;
use warnings;
use File::Find;
use Cwd;

our $dir = shift || cwd();
our @types = ('pl', 'plex', 'pm');

our @files;
find sub {
    return unless -f;
    my $fName = $_;
    foreach (@types) {
        my (undef, $ext) = split (/\./, $fName);
        $ext and push @files, $File::Find::name if $ext eq $_;
    }
}, $dir;

unless (@files) {
    die "No files found to operate on!";
}

print("  Code   Cmts  %Code  Total   File \n");
print "=" x 80 . "\n";

my ($TLOC, $TCOM, $TTOT) = (0,0,0);
foreach my $file (@files) {
    my ($LOC, $COM) = (0,0);
    
    my $contents = do { local (*ARGV, $/) = [$file] and <> };
    my @lines = grep { ! /^\s*$/ } split(/$\//, $contents);
    
    while (@lines) {
        $_ = shift @lines;
        if ( /^=[a-z0-9]+\s/ ) {
            do {
                $_ = shift @lines and $COM++;
            } until /^=cut/;
        }
        /^\s*\#/ ? undef $_ || $COM++ : $LOC++;
    }
    
    my $TOT = $LOC + $COM;
    
    $TLOC += $LOC;
    $TCOM += $COM;
    $TTOT += $TOT;
    
    my $PER = sprintf("%3s", sprintf("%.0f", ($COM/$TOT) * 100));
    
    printf("% 6d % 6d % 6d % 6d %s\n",
           $LOC, $COM, $PER, $TOT,
           '  '. substr $file, length($dir));
}

my $TPER = sprintf "%.2f", ($TCOM/$TTOT) * 100;
print "=" x 80 . "\n";
print "SEARCHD: '$dir'\n";
print "RESULTS: $TLOC LoC ($TTOT w/comments: $TCOM lines -> $TPER% of total)";