#!/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';
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() },
) or exit 64; # EX_USAGE
$opt{width} ||= $ENV{COLUMNS} || 80;
$opt{color} //= 1;
+$opt{trim} //= 0;
my @lines = readline or exit;
chomp for @lines;
my @values = map { s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x and $1 } @lines;
my @order = sort { $b <=> $a } grep { length } @values;
+length > $opt{trim} + 1 and substr($_, $opt{trim}) = '…' 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 $len = $opt{trim} ? $opt{trim} + 2 :
+ 1 + max map { length } @lines; # left padding
my $size = ($maxval - $minval) &&
($opt{width} - $lenval - $len) / ($maxval - $minval); # bar multiplication
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.
+
=item -m, --markers=
Statistical positions to indicate on bars.