'color|c!',
'C' => sub { $opt{color} = 0 },
'field|f=s',
+ 'human-readable|H!',
'interval|t:i',
'trim|length|l=s' => sub {
my ($optname, $optval) = @_;
$opt{trim} = $optval;
},
'value-length=i',
+ 'hidemin=i',
+ 'hidemax=i',
+ 'limit|L=s' => sub {
+ my ($optname, $optval) = @_;
+ $optval ||= 0;
+ ($opt{hidemin}, $opt{hidemax}) =
+ $optval =~ m/\A (?: ([0-9]+)? - )? ([0-9]+)? \z/x or die(
+ "Value \"$optval\" invalid for option limit",
+ " (range expected)\n"
+ );
+ },
'markers|m=s',
'unmodified|u!',
'width|w=i',
$opt{width} ||= $ENV{COLUMNS} || 80;
$opt{color} //= -t *STDOUT; # enable on tty
$opt{trim} *= $opt{width} / 100 if $opt{trimpct};
+$opt{units} = $opt{'human-readable'} && ['', qw( k M G T P E Z Y y z a f p n μ m )];
if (defined $opt{interval}) {
$opt{interval} ||= 1;
my $anchor = !defined $opt{field} ? qr/\A/ :
$opt{field} =~ /^[0-9]+$/ ? qr/(?:\S*\h+){$opt{field}}\K/ :
$opt{field};
+my $valmatch = qr/$anchor ( \h* -? [0-9]* \.? [0-9]+ |)/x;
while (readline) {
s/\r?\n\z//;
s/^\h*// unless $opt{unmodified};
- push @values, s/$anchor ( \h* -? [0-9]* \.? [0-9]+ |)/\n/x && $1;
+ push @values, s/$valmatch/\n/ && $1;
if (defined $opt{trim}) {
my $trimpos = abs $opt{trim};
if ($trimpos <= 1) {
sub show_lines {
-state $nr = 0;
+state $nr = $opt{hidemin} ? $opt{hidemin} - 1 : 0;
@lines and @lines > $nr or return;
my @order = sort { $b <=> $a } grep { length } @values;
-my $maxval = $order[0];
+my $maxval = $opt{hidemax} ? max @values[0 .. $opt{hidemax} - 1] : $order[0];
my $minval = min $order[-1], 0;
my $lenval = $opt{'value-length'} // max map { length } @order;
my $len = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 :
- max map { length $values[$_] && length $lines[$_] } 0 .. $#lines; # left padding
+ max map { length $values[$_] && length $lines[$_] }
+ 0 .. min $#lines, $opt{hidemax} || (); # left padding
my $size = ($maxval - $minval) &&
($opt{width} - $lenval - $len) / ($maxval - $minval); # bar multiplication
}
}
+sub sival {
+ my $unit = int(log($_[0]) / log(1000) - ($_[0] < 1));
+ sprintf "%3.1f%1s", $_[0] / 1000 ** $unit,
+ $#{$opt{units}} >> 1 < abs $unit ? "e$unit" : $opt{units}->[$unit];
+}
+
while ($nr <= $#lines) {
+ $nr >= $opt{hidemax} and last if $opt{hidemax};
my $val = $values[$nr];
if (length $val) {
my $color = !$opt{color} ? 0 :
$val == $order[0] ? 32 : # max
$val == $order[-1] ? 31 : # min
90;
- $val = sprintf "%*s", $lenval, $val;
+ $val = $opt{units} ? sival($val) : sprintf "%*s", $lenval, $val;
$val = "\e[${color}m$val\e[0m" if $color;
}
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 '';
+
$nr++;
}
or capture the numbers itself,
for example I<-f'(\d+)'> for the first digits anywhere.
+=item -H, --human-readable
+
+Format values using SI unit prefixes,
+turning long numbers like I<12356789> into I<12.4M>.
+
=item -t, --interval[=<seconds>]
Interval time to output partial progress.
Prepend a dash (i.e. make negative) to enforce padding
regardless of encountered contents.
+=item -L, --limit=(<count>|<start>-[<end>])
+
+Stop output after a number of lines.
+All input is still counted and analyzed for statistics,
+but disregarded for padding and bar size.
+
=item -m, --markers=
Statistical positions to indicate on bars.
curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL |
xmllint --xpath '//*[local-name()="date" or local-name()="value"]' - |
- sed -r 's,</wb:value>,\n,g; s,(<[^>]+>)+, ,g' | barcat -f1
+ sed -r 's,</wb:value>,\n,g; s,(<[^>]+>)+, ,g' | barcat -f1 -H
Movies per year from prepared JSON data:
Or the most frequent authors:
- git shortlog -sn | barcat | head -3
+ git shortlog -sn | barcat -L3
Latency history: