From 62a8af47251274908bf7a65a4c261d469eff1a41 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Sat, 7 Sep 2019 18:05:26 +0200
Subject: [PATCH] stat (-s) option to summarise totals at end

---
 barcat | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/barcat b/barcat
index 00a2173..aec811b 100755
--- 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.
-- 
2.30.0