#!/usr/bin/env perl
use 5.014;
use warnings;
-use List::Util qw( max sum );
+use utf8;
+use List::Util qw( min max sum );
use open qw( :std :utf8 );
our $VERSION = '1.00';
-use Getopt::Long '2.33';
+use Getopt::Long '2.33', qw( :config gnu_getopt );
sub podexit { require Pod::Usage; Pod::Usage::pod2usage(-exitval => 0, @_) }
GetOptions(\my %opt,
'color|c!',
+ 'trim|length|l=i',
+ 'markers|m=s',
'width|w=i',
'usage|h' => sub { podexit() },
'help' => sub { podexit(-verbose => 2) },
chomp for @lines;
my @values = map { s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x and $1 } @lines;
my @order = sort { $b <=> $a } grep { length } @values;
-my $maxval = max $order[0], -$order[-1];
+if ($opt{trim}) {
+ my $trimpos = abs $opt{trim};
+ length > 1 + $trimpos and substr($_, $trimpos) = '…' for @lines;
+}
+
+my $maxval = $order[0];
+my $minval = min $order[-1], 0;
my $lenval = max map { length } @order;
-my $len = 1 + max map { length } @lines; # left padding
-my $size = $maxval && ($opt{width} - $lenval - $len) / $maxval; # bar multiplication
+my $len = defined $opt{trim} && $opt{trim} < 0 ? -$opt{trim} + 2 :
+ 1 + max map { length } @lines; # left padding
+my $size = ($maxval - $minval) &&
+ ($opt{width} - $lenval - $len) / ($maxval - $minval); # bar multiplication
-sub orderpos { ($order[$_[0]] + $order[$_[0] + .5]) / 2 * $size }
my @barmark;
-$barmark[ sum(@order) / @order * $size ] = '='; # average
-$barmark[ orderpos($#order / 2) ] = '+'; # mean
-defined and $opt{color} and $_ = "\e[36m$_\e[0m" for @barmark;
+if ($opt{markers} // 1) {
+ sub orderpos { (($order[$_[0]] + $order[$_[0] + .5]) / 2 - $minval) * $size }
+ $barmark[ (sum(@order) / @order - $minval) * $size ] = '='; # average
+ $barmark[ orderpos($#order / 2) ] = '+'; # mean
+ $barmark[ -$minval * $size ] = '|' if $minval < 0; # zero
+ defined and $opt{color} and $_ = "\e[36m$_\e[0m" for @barmark;
+}
for my $nr (0 .. $#lines) {
my $val = $values[$nr];
print "\e[0m" if $color;
}
printf '%-*s', $len, $lines[$nr];
- print $barmark[$_] // '-' for 1 .. abs($val || 0) * $size;
+ print $barmark[$_] // '-' for 1 .. (($val || 0) - $minval) * $size;
say '';
}
Disable colored output of values and bar markers.
+=item -l, --length=[-]<size>
+
+Trim line contents (between number and bars)
+to a maximum number of characters.
+The exceeding part is replaced by an abbreviation sign.
+
+Prepend a dash (i.e. make negative) to enforce padding
+regardless of encountered contents.
+
+=item -m, --markers=
+
+Statistical positions to indicate on bars.
+Cannot be customized yet,
+only disabled by providing an empty argument.
+
+Any value enables all marker characters:
+
+=over 2
+
+=item B<=>
+
+Average:
+the sum of all values divided by the number of counted lines.
+
+=item B<+>
+
+Median:
+the middle value or average between middle values.
+
+=back
+
=item -w, --width=<columns>
Override the maximum number of columns to use.