coloured bar markers

[barcat.git] / graph

diff --git a/graph b/graph
index fbc12487fda295ae3a15de72f809480c84867994..83a3a880adaeab4cde199de30081bdb5a92e5125 100755 (executable)
--- a/graph
+++ b/graph
@@ -1,6 +1,33 @@
-#!/usr/bin/perl -l
-use List::Util 'max';
-chomp for my @r = <>;
-my $len = 1 + max map length, @r;
-my $size = (80 - $len) / max @r;
-print $_, ' 'x($len-length), '#'x($_*$size) for @r;
+#!/usr/bin/env perl
+use 5.014;
+use warnings;
+use List::Util qw( max );
+
+my $width = $ENV{COLUMNS} || 80;
+
+my @lines = readline;
+chomp for @lines;
+my @values = map { s/^\h*([0-9]*)// and $1 } @lines;
+my @order  = sort { $b <=> $a } @values;
+my $lenval = 1 + int log($order[0]) / log 10;  # max string length
+my $len    = 1 + max map { length } @lines;  # left padding
+my $size   = ($width - $lenval - $len) / $order[0];  # bar multiplication
+
+sub orderpos { ($order[$_[0]] + $order[$_[0] + .5]) / 2 * $size }
+my @barmark;
+$barmark[ orderpos($#order / 2) ] = '+';  # mean
+defined and $_ = "\e[36m$_\e[0m" for @barmark;
+
+for my $nr (0 .. $#lines) {
+       my $val = $values[$nr];
+       my $color =
+               $val == $order[0] ? 32 : # max
+               $val == $order[-1] ? 31 : # min
+               90;
+       printf "\e[%sm", $color if $color;
+       printf "%*s", $lenval, $val;
+       print "\e[0m" if $color;
+       printf '%-*s', $len, $lines[$nr];
+       print $barmark[$_] // '-' for 1 .. $val * $size;
+       say '';
+}