ploc

ploc

#!/usr/bin/env perl
use strict;

&main; exit;

sub main {
    my %white = map { $_ => 1 } qw/
        kt java pl js rb py
    /;

    my %result;

    for my $file (split /\n/, `git ls-files`) {
        my ($ext,) = ($file =~ m{\.([^./_-]{1,4}$)});
        $ext //= '-';
        my $lines = do {
            open my $fh, '<', $file;
            my $n = 0;
            $n++ while <$fh>;
            close $fh;
            $n;
        };
        $result{$ext} += $lines;
    }

    my $total = 0;
    for my $ext (sort { $result{$a} <=> $result{$b} } keys %result) {
        if (%white) {
            next unless $white{$ext};
        }

        my $r = $result{$ext};
        printf("%5s %10s\n", $ext, commify($r));
        $total += $r;
    }
    print "\n";
    printf("%5s %10s\n", "Total", commify($total));
}

sub commify {
    local $_ = shift;
    1 while s/^([-+]?\d+)(\d{3})/$1,$2/;
    return $_;
}