stat (-s) option to summarise totals at end

diff --git a/barcat b/barcat
index 00a21739671c0a4d00df95517912299cdd472757..aec811bc97dca30ae8052a07d9fa0ee29854e744 100755 (executable)
--- a/barcat
+++ b/barcat
@@ -47,6 +47,7 @@ GetOptions(\%opt,
                );
        },
        'markers|m=s',
+       'stat|s!',
        'unmodified|u!',
        'width|w=i',
        'usage|h' => sub { podexit() },
@@ -95,6 +96,8 @@ sub show_lines {
 
 state $nr = $opt{hidemin} ? $opt{hidemin} - 1 : 0;
 @lines and @lines > $nr or return;
+@lines or return;
+@lines > $nr or return unless $opt{hidemin};
 
 my @order  = sort { $b <=> $a } grep { length } @values;
 my $maxval = $opt{hidemax} ? max @values[0 .. $opt{hidemax} - 1] : $order[0];
@@ -130,6 +133,8 @@ if ($opt{markers} // 1 and $size > 0) {
        }
 }
 
+@lines > $nr or return if $opt{hidemin};
+
 sub sival {
        my $unit = int(log($_[0]) / log(1000) - ($_[0] < 1));
        my $float = $_[0] !~ /^ (?: 0*\.)? [0-9]{1,3} $/x;
@@ -142,7 +147,7 @@ sub sival {
 }
 
 while ($nr <= $#lines) {
-       $nr >= $opt{hidemax} and last if $opt{hidemax};
+       $nr >= $opt{hidemax} and last if defined $opt{hidemax};
        my $val = $values[$nr];
        if (length $val) {
                my $color = !$opt{color} ? 0 :
@@ -163,6 +168,11 @@ while ($nr <= $#lines) {
 }
 show_lines();
 
+if ($opt{stat}) {
+       printf '%d values', scalar @values;
+       say '';
+}
+
 __END__
 
 =head1 NAME
@@ -261,6 +271,10 @@ or 68% of all entries.
 
 =back
 
+=item -s, --stat
+
+Total statistics after all data.
+
 =item -u, --unmodified
 
 Do not strip leading whitespace.