-#!/usr/bin/env perl
+#!/usr/bin/perl -CA
use 5.018;
use warnings;
use utf8;
);
},
'markers|m=s',
+ 'spark:s' => sub {
+ $opt{spark} = [split //, $_[1] || '⎽▁▂▃▄▅▆▇█'];
+ },
'stat|s!',
'unmodified|u!',
'width|w=i',
$opt{units} = [split //, ' kMGTPEZYyzafpnμm'] if $opt{'human-readable'};
$opt{anchor} //= qr/\A/;
$opt{'value-length'} = 6 if $opt{units};
+$opt{'value-length'} = 1 if $opt{unmodified};
my (@lines, @values, @order);
} or warn $@, "Expect slowdown with large datasets!\n";
}
-$SIG{INT} = 'IGNORE'; # continue after assumed eof
+$SIG{INT} = sub {
+ $SIG{INT} = 'DEFAULT'; # reset for subsequent attempts
+ 'IGNORE' # continue after assumed eof
+};
my $valmatch = qr/$opt{anchor} ( \h* -? [0-9]* \.? [0-9]+ (?: e[+-]?[0-9]+ )? |)/x;
while (readline) {
push @order, $1 if length $1;
if (defined $opt{trim} and defined $1) {
my $trimpos = abs $opt{trim};
+ $trimpos -= length $1 if $opt{unmodified};
if ($trimpos <= 1) {
$_ = substr $_, 0, 1;
}
$SIG{INT} = 'DEFAULT';
+sub color {
+ $opt{color} and defined $_[0] or return '';
+ return "\e[$_[0]m" if defined wantarray;
+ $_ = color(@_) . $_ . color(0) if defined;
+}
+
sub show_lines {
state $nr = $opt{hidemin} ? $opt{hidemin} - 1 : 0;
$barmark[ orderpos($#order * .68269) ] = '<';
$barmark[ orderpos($#order / 2) ] = '+'; # mean
$barmark[ -$minval * $size ] = '|' if $minval < 0; # zero
- defined and $opt{color} and $_ = "\e[36m$_\e[0m" for @barmark;
+ color(36) for @barmark;
state $lastmax = $maxval;
if ($maxval > $lastmax) {
print ' ' x ($lenval + $len);
- printf "\e[90m" if $opt{color};
+ printf color(90);
printf '%-*s',
($lastmax - $minval) * $size + .5,
'-' x (($values[$nr - 1] - $minval) * $size);
- print "\e[92m" if $opt{color};
+ print color(92);
say '+' x (($maxval - $lastmax - $minval) * $size + .5);
- print "\e[0m" if $opt{color};
+ print color(0);
$lastmax = $maxval;
}
}
while ($nr <= $#lines) {
$nr >= $opt{hidemax} and last if defined $opt{hidemax};
my $val = $values[$nr];
+
+ if ($opt{spark}) {
+ print $opt{spark}->[ ($val - $minval) / $maxval * $#{$opt{spark}} ];
+ next;
+ }
+
if (length $val) {
- my $color = !$opt{color} ? 0 :
+ my $color = !$opt{color} ? undef :
$val == $order[0] ? 32 : # max
$val == $order[-1] ? 31 : # min
90;
$val = $opt{units} ? sival($val) : sprintf "%*s", $lenval, $val;
- $val = "\e[${color}m$val\e[0m" if $color;
+ color($color) for $val;
}
my $line = $lines[$nr] =~ s/\n/$val/r;
printf '%-*s', $len + length($val), $line;
print $barmark[$_] // '-' for 1 .. $size && (($values[$nr] || 0) - $minval) * $size + .5;
say '';
-
+}
+continue {
$nr++;
}
+say '' if $opt{spark};
}
show_lines();
=item -u, --unmodified
-Do not strip leading whitespace.
+Do not reformat values, keeping leading whitespace.
Keep original value alignment, which may be significant in some programs.
=item --value-length=<size>
echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' |
psql -t | barcat -u
+Earthquakes worldwide magnitude 1+ in the last 24 hours:
+
+ https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/1.0_day.csv |
+ column -tns, | graph -f4 -u -l80%
+
External datasets, like movies per year:
curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json |
git shortlog -sn | barcat -L3 -s
+Activity of the last days (substitute date C<-v-{}d> on BSD):
+
+ ( git log --pretty=%ci --since=30day | cut -b-10
+ seq 0 30 | xargs -i date +%F -d-{}day ) |
+ sort | uniq -c | awk '$1--' | graph --spark
+
=head1 AUTHOR
Mischa POSLAWSKY <perl@shiar.org>