use open qw( :std :utf8 );
use re '/msx';
-our $VERSION = '1.07';
+our $VERSION = '1.09';
-use Getopt::Long '2.33', qw( :config gnu_getopt );
my %opt;
+if (@ARGV) {
+require Getopt::Long;
+Getopt::Long->import('2.33', qw( :config gnu_getopt ));
GetOptions(\%opt,
'ascii|a!',
- 'color|c!',
- 'C' => sub { $opt{color} = 0 },
+ 'color|C!',
+ 'M' => sub { $opt{color} = 0 },
'field|f=s' => sub {
eval {
local $_ = $_[1];
- $opt{anchor} = /\A[0-9]+\z/ ? qr/(?:\S*\h+){$_}\K/ : qr/$_/;
+ s/\A[0-9]+\z/(?:\\S*\\h+){$_}\\K/;
+ s{\A[+]([0-9]*)\z}{
+ (!!$1 && '(?:\d+\D+\b){'.$1.'}\K') . '\s* (?=\d)'
+ }e;
+ $opt{anchor} = qr/$_/;
} or die $@ =~ s/(?:\ at\ \N+)?\Z/ for option $_[0]/r;
},
+ 'count|c!',
'human-readable|H!',
+ 'sexagesimal!',
+ 'reformat!',
'interval|t:i',
'trim|length|l=s' => sub {
my ($optname, $optval) = @_;
$opt{trim} = $optval;
},
'value-length=i',
- 'hidemin=i',
- 'hidemax=i',
'minval=f',
'maxval=f',
'limit|L:s' => sub {
my ($optname, $optval) = @_;
$optval ||= 0;
$optval =~ /\A-[0-9]+\z/ and $optval .= '-'; # tail shorthand
- ($opt{hidemin}, $opt{hidemax}) =
- $optval =~ m/\A (?: (-? [0-9]+)? - )? ([0-9]+)? \z/ or die(
+ $optval =~ s/[+]/--/;
+ my ($start, $end) =
+ $optval =~ m/\A (?: (-? [0-9]+)? - )? (-? [0-9]+)? \z/ or die(
"Value \"$optval\" invalid for option limit",
" (range expected)\n"
);
+ $start ||= 1;
+ $start--;
+ s/\A-0*\z// and $_ ||= undef for $end // ();
+
+ $opt{hidemin} = sub {
+ my ($lines) = @_;
+ if ($start < 0) {
+ return max(0, $lines + $start + 2);
+ }
+ return $start;
+ } if $start;
+ $opt{hidemax} = sub {
+ my ($limit, $offset) = @_;
+ if ($end < 0) {
+ return $offset - $end - 1; # count
+ }
+ elsif ($start < 0) {
+ return $limit - $end + 1; # bottom
+ }
+ elsif ($end <= $limit) {
+ return $end - 1; # less
+ }
+ return $limit;
+ } if defined $end;
},
+ 'log|e!',
'header!',
'markers|m=s',
'graph-format=s' => sub {
$opt{'graph-format'} = substr $_[1], 0, 1;
},
- 'spark:s' => sub {
- $opt{spark} = [split //,
- $_[1] || ($opt{ascii} ? ' ..oOO' : ' ▁▂▃▄▅▆▇█')
- ];
- },
+ 'spark|_!',
+ 'indicators:s',
'palette=s' => sub {
$opt{palette} = {
+ '' => [],
fire => [qw( 90 31 91 33 93 97 96 )],
- fire88 => [map {"38;5;$_"} qw(
- 80 32 48 64 68 72 76 77 78 79 47
- )],
fire256=> [map {"38;5;$_"} qw(
235 52 88 124 160 196
202 208 214 220 226 227 228 229 230 231 159
)],
- ramp88 => [map {"38;5;$_"} qw(
- 64 65 66 67 51 35 39 23 22 26 25 28
- )],
whites => [qw( 1;30 0;37 1;37 )],
- greys => [map {"38;5;$_"} 52, 235..255, 47],
- }->{$_[1]} // [ split /[^0-9;]/, $_[1] ];
+ grays => [map {"38;5;$_"} 0, 232..255, 15],
+ random => [map {"38;5;$_"} List::Util::shuffle(17..231)],
+ rainbow=> [map {"38;5;$_"}
+ 196, # r
+ (map { 196 + $_*6 } 0..4), # +g
+ (map { 226 - $_*6*6 } 0..4), # -r
+ (map { 46 + $_ } 0..4), # +b
+ (map { 51 - $_*6 } 0..4), # -g
+ (map { 21 + $_*6*6 } 0..4), # +r
+ (map { 201 - $_ } 0..4), # -b
+ 196,
+ ],
+ }->{$_[1]} // do {
+ my @vals = split /[^0-9;]/, $_[1]
+ or die "Empty palette resulting from \"$_[1]\"\n";
+ \@vals;
+ };
},
'stat|s!',
+ 'report=s',
'signal-stat=s',
'unmodified|u!',
'width|w=i',
- 'version' => sub {
- say "barcat version $VERSION";
+ 'version|V' => sub {
+ my $mascot = $opt{ascii} ? '=^,^=' : 'ฅ^•ﻌ•^ฅ';
+ say "barcat $mascot version $VERSION";
exit;
},
'usage|h' => sub {
);
},
) or exit 64; # EX_USAGE
+}
$opt{width} ||= $ENV{COLUMNS} || qx(tput cols) || 80 unless $opt{spark};
-$opt{color} //= -t *STDOUT; # enable on tty
+$opt{color} //= $ENV{NO_COLOR} ? 0 : -t *STDOUT; # enable on tty
$opt{'graph-format'} //= '-';
$opt{trim} *= $opt{width} / 100 if $opt{trimpct};
-$opt{units} = [split //, ' kMGTPEZYyzafpn'.($opt{ascii} ? 'u' : 'μ').'m']
+$opt{units} = [split //, ' kMGTPEZYRQqryzafpn'.($opt{ascii} ? 'u' : 'μ').'m']
if $opt{'human-readable'};
$opt{anchor} //= qr/\A/;
-$opt{'value-length'} = 6 if $opt{units};
+$opt{'value-length'} = 4 if $opt{units};
$opt{'value-length'} = 1 if $opt{unmodified};
$opt{'signal-stat'} //= exists $SIG{INFO} ? 'INFO' : 'QUIT';
$opt{markers} //= '=avg >31.73v <68.27v +50v |0';
+$opt{report} //= join('',
+ '${partsum+; $_ .= " of "}',
+ '${sum+; color(1); $_ .= " total in "}',
+ '${count#} values',
+ '${lines#; $_ = $_ != @order && " over $_ lines"}',
+ sprintf('${count: (%s)}', join ', ',
+ '${min; color(31)} min',
+ '${avg; $opt{reformat} or $_ = sprintf "%0.2f", $_; color(36)} avg',
+ '${max; color(32)} max',
+ ),
+);
$opt{palette} //= $opt{color} && [31, 90, 32];
-$opt{hidemin} = ($opt{hidemin} || 1) - 1;
+$opt{indicators} = [split //, $opt{indicators} ||
+ ($opt{ascii} ? ' .oO' : $opt{spark} ? ' ▁▂▃▄▅▆▇█' : ' ▏▎▍▌▋▊▉█')
+] if defined $opt{indicators} or $opt{spark};
$opt{input} = (@ARGV && $ARGV[0] =~ m/\A[-0-9]/) ? \@ARGV : undef
and undef $opt{interval};
-$opt{'sum-format'} = sub { sprintf '%.8g', $_[0] };
$opt{'calc-format'} = sub { sprintf '%*.*f', 0, 2, $_[0] };
-$opt{'value-format'} = $opt{units} && sub {
- my $unit = int(
+$opt{'value-format'} = $opt{sexagesimal} ? sub {
+ my $s = abs($_[0]) + .5;
+ sprintf('%s%d:%02d:%02d', $_[0] < 0 && '-', $s/3600, $s/60%60, $s%60);
+} : $opt{units} && sub {
+ my $unit = (
log(abs $_[0] || 1) / log(10)
- 3 * (abs($_[0]) < .9995) # shift to smaller unit if below 1
- - log(.9995) / log(10) # 3 digits rounding up
+ 1e-15 # float imprecision
);
- my $float = $_[0] !~ /^0*[-0-9]{1,3}$/;
+ my $decimal = ($unit % 3) == ($unit < 0);
+ $unit -= log($decimal ? .995 : .9995) / log(10); # rounded
+ $decimal = ($unit % 3) == ($unit < 0);
+ $decimal &&= $_[0] !~ /^-?0*[0-9]{1,3}$/; # integer 0..999
sprintf('%*.*f%1s',
3 + ($_[0] < 0), # digits plus optional negative sign
- $float && ($unit % 3) == ($unit < 0), # tenths
- $_[0] / 1000 ** int($unit/3), # number
- $#{$opt{units}} * 1.5 < abs $unit ? "e$unit" : $opt{units}->[$unit/3]
+ $decimal, # tenths
+ $_[0] / 1000 ** int($unit/3), # number
+ $#{$opt{units}} * 1.5 < abs $unit ? sprintf('e%d', $unit) :
+ $opt{units}->[$unit/3] # suffix
);
-};
+} and $opt{reformat}++;
+$opt{'value-format'} ||= sub { sprintf '%.8g', $_[0] };
-my (@lines, @values, @order);
+my (@lines, @values, @order, %uniq);
$SIG{$_} = \&show_stat for $opt{'signal-stat'} || ();
$SIG{ALRM} = sub {
} or warn $@, "Expect slowdown with large datasets!\n";
}
-my $valmatch = qr<
- $opt{anchor} ( \h* -? [0-9]* [.]? [0-9]+ (?: e[+-]?[0-9]+ )? |)
->x;
+my $float = qr<[0-9]* [.]? [0-9]+ (?: e[+-]?[0-9]+ )?>; # positive numberish
+my $valmatch = qr< $opt{anchor} ( \h* -? $float |) >x;
while (defined ($_ = $opt{input} ? shift @{ $opt{input} } : readline)) {
s/\r?\n\z//;
+ if ($opt{count}) {
+ my ($valnum) = m/(\S*)/;
+ $valnum //= '';
+ $uniq{$valnum}++ and next;
+ push @lines, "\n " . $_;
+ push @values, $valnum;
+ next;
+ }
s/\A\h*// unless $opt{unmodified};
my $valnum = s/$valmatch/\n/ && $1;
push @values, $valnum;
and $. % $opt{interval} == 0;
}
-if ($opt{'zero-missing'}) {
- push @values, (0) x 10;
-}
-
$SIG{INT} = 'DEFAULT';
sub color {
sub show_lines {
-state $nr =
- $opt{hidemin} < 0 ? @lines + $opt{hidemin} + 1 :
- $opt{hidemin};
+state $nr = $opt{hidemin} ? $opt{hidemin}->($#lines) : 0;
@lines > $nr or return;
-my $limit = $#lines;
-if (defined $opt{hidemax}) {
- if ($opt{hidemin} and $opt{hidemin} < 0) {
- $limit -= $opt{hidemax} - 1;
- }
- else {
- $limit = $opt{hidemax} - 1;
- }
+my $limit = $opt{hidemax} ? $opt{hidemax}->($#lines, $nr) : $#lines;
+
+if ($opt{count}) {
+ $_ = $uniq{$_} for @values;
+ @order = @values;
}
@order = sort { $b <=> $a } @order unless tied @order;
) // 0;
my $minval = $opt{minval} // min $order[-1] // (), 0;
my $range = $maxval - $minval;
+$range &&= log $range if $opt{log};
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 .. min $#lines, $opt{hidemax} || (); # left padding
+ max(map { length $values[$_] && length $lines[$_] } $nr .. $limit)
+ // 0; # left padding
my $size = defined $opt{width} && $range &&
- ($opt{width} - $lenval - $len) / $range; # bar multiplication
+ ($opt{width} - $lenval - $len - !!$opt{indicators}); # bar multiplication
my @barmark;
if ($opt{markers} and $size > 0) {
for my $markspec (split /\h/, $opt{markers}) {
my ($char, $func) = split //, $markspec, 2;
- my $pos = eval {
+ my @pos = eval {
if ($func eq 'avg') {
return sum(@order) / @order;
}
elsif ($func =~ /\A([0-9.]+)v\z/) {
- die "Invalid marker $char: percentile $1 out of bounds\n" if $1 > 100;
+ $1 <= 100 or die(
+ "Invalid marker $char: percentile $1 out of bounds\n"
+ );
my $index = $#order * $1 / 100;
return ($order[$index] + $order[$index + .5]) / 2;
}
elsif ($func =~ /\A-?[0-9.]+\z/) {
return $func;
}
+ elsif ($func =~ /\A\/($float)\z/) {
+ my @range = my $multiple = my $next = $1;
+ while ($next < $maxval) {
+ $multiple *= 10 if $opt{log};
+ push @range, $next += $multiple;
+ }
+ return @range;
+ }
else {
die "Unknown marker $char: $func\n";
}
};
- defined $pos or do {
+ @pos or do {
warn $@ if $@;
next;
};
- $pos -= $minval;
- $pos >= 0 or next;
- color(36) for $barmark[$pos * $size] = $char;
+ for my $pos (@pos) {
+ $pos -= $minval;
+ $pos &&= log $pos if $opt{log};
+ $pos >= 0 or next;
+ color(36) for $barmark[$pos / $range * $size] = $char;
+ }
}
state $lastmax = $maxval;
if ($maxval > $lastmax) {
print ' ' x ($lenval + $len);
- printf color(90);
+ print color(90);
printf '%-*s',
- ($lastmax - $minval) * $size + .5,
- '-' x (($values[$nr - 1] - $minval) * $size);
+ ($lastmax - $minval) * $size / $range + .5,
+ '-' x (($values[$nr - 1] - $minval) * $size / $range);
print color(92);
- say '+' x (($range - $lastmax) * $size + .5);
+ say '+' x (($range - $lastmax) * $size / $range + .5);
print color(0);
$lastmax = $maxval;
}
say(
color(31), sprintf('%*s', $lenval, $minval),
color(90), '-', color(36), '+',
- color(32), sprintf('%*s', $size * $range - 3, $maxval),
+ color(32), sprintf('%*s', $size - 3, $maxval),
color(90), '-', color(36), '+',
color(0),
) if $opt{header};
while ($nr <= $limit) {
my $val = $values[$nr];
- my $rel = length $val && $range && ($val - $minval) / $range;
+ my $rel;
+ if (length $val) {
+ $rel = $val - $minval;
+ $rel &&= log $rel if $opt{log};
+ $rel = min(1, $rel / $range) if $range; # 0..1
+ }
my $color = !length $val || !$opt{palette} ? undef :
$val == $order[0] ? $opt{palette}->[-1] : # max
$val == $order[-1] ? $opt{palette}->[0] : # min
$opt{palette}->[ $rel * ($#{$opt{palette}} - 1) + 1 ];
+ my $indicator = $opt{indicators} && $opt{indicators}->[
+ !length($val) || !$#{$opt{indicators}} ? 0 : # blank
+ $#{$opt{indicators}} < 2 ? 1 :
+ $val >= $order[0] ? -1 :
+ $rel * ($#{$opt{indicators}} - 1e-14) + 1
+ ];
if ($opt{spark}) {
say '' if $opt{width} and $nr and $nr % $opt{width} == 0;
- print color($color), $opt{spark}->[
- !$val || !$#{$opt{spark}} ? 0 : # blank
- $val == $order[0] ? -1 : # max
- $val == $order[-1] ? 1 : # min
- $#{$opt{spark}} < 3 ? 1 :
- $rel * ($#{$opt{spark}} - 3) + 2.5
- ];
+ print color($color), $_ for $indicator;
next;
}
+ print $indicator if defined $indicator;
if (length $val) {
- $val = $opt{'value-format'} ? $opt{'value-format'}->($val) :
- sprintf "%*s", $lenval, $val;
+ $val = sprintf("%*s", $lenval,
+ $opt{reformat} ? $opt{'value-format'}->($val) : $val
+ );
color($color) for $val;
}
my $line = $lines[$nr] =~ s/\n/$val/r;
next;
}
printf '%-*s', $len + length($val), $line;
- print $barmark[$_] // $opt{'graph-format'}
- for 1 .. $size && (($values[$nr] || 0) - $minval) * $size + .5;
+ if ($rel and $size) {
+ print $barmark[$_] // $opt{'graph-format'}
+ for 1 .. $rel * $size + .5;
+ }
say '';
}
continue {
}
sub show_stat {
- if ($opt{hidemin} or $opt{hidemax}) {
- my $linemin = $opt{hidemin};
- my $linemax = ($opt{hidemax} || @lines) - 1;
- if ($linemin < 0) {
- $linemin += @lines;
- $linemax = @lines - $linemax;
- }
- printf '%.8g of ', $opt{'sum-format'}->(
- sum(grep {length} @values[$linemin .. $linemax]) // 0
- );
- }
+ my %vars = (
+ count => int @order,
+ lines => int @lines,
+ );
+ my $linemin = !$opt{hidemin} ? 0 :
+ ($vars{start} = $opt{hidemin}->($#lines));
+ my $linemax = !$opt{hidemax} ? $#lines :
+ ($vars{end} = $opt{hidemax}->($#lines, $vars{start}));
if (@order) {
- my $total = sum @order;
- printf '%s total', color(1) . $opt{'sum-format'}->($total) . color(0);
- printf ' in %d values', scalar @order;
- printf ' over %d lines', scalar @lines if @order != @lines;
- printf(' (%s min, %s avg, %s max)',
- color(31) . ($opt{'value-format'} || sub {$_[0]})->($order[-1]) . color(0),
- color(36) . ($opt{'value-format'} || $opt{'calc-format'})->($total / @order) . color(0),
- color(32) . ($opt{'value-format'} || sub {$_[0]})->($order[0]) . color(0),
+ $vars{partsum} = sum(0, grep {length} @values[$linemin .. $linemax])
+ if $linemin <= $linemax and ($opt{hidemin} or $opt{hidemax});
+ %vars = (%vars,
+ sum => sum(@order),
+ min => $order[-1],
+ max => $order[0],
);
+ $vars{avg} = $vars{sum} / @order;
}
- say '';
+ say varfmt($opt{report}, \%vars);
return 1;
}
+sub varfmt {
+ my ($fmt, $vars) = @_;
+ $fmt =~ s[\$\{ \h*+ ((?: [^{}]++ | \{(?1)\} )+) \}]{
+ my ($name, $op, $cmd) = split /\s*([;:])/, $1, 2;
+ my $format = $name =~ s/\+// || $name !~ s/\#// && $opt{reformat};
+ local $_ = $vars->{$name};
+ defined && do {
+ $_ = $opt{'value-format'}->($_) if $format;
+ if ($cmd and $op eq ':') {
+ $_ = varfmt($cmd, $vars);
+ }
+ elsif ($cmd) {
+ eval $cmd;
+ warn "Error in \$$name report: $@" if $@;
+ }
+ $_;
+ }
+ }eg;
+ return $fmt;
+}
+
sub show_exit {
show_lines();
show_stat() if $opt{stat};
show_exit();
__END__
-Usage:
- barcat [OPTIONS] [FILES|NUMBERS]
-
+Usage: /\_/\
+ barcat [OPTIONS] [FILES|NUMBERS] (=•.•=)
+ (u u)
Options:
-a, --[no-]ascii Restrict user interface to ASCII characters
- -c, --[no-]color Force colored output of values and bar markers
- -f, --field=(N|REGEXP) Compare values after a given number of whitespace
+ -C, --[no-]color Force colored output of values and bar markers
+ -c, --count Omit repetitions and count the number of
+ occurrences
+ -f, --field=([+]N|REGEXP)
+ Compare values after a given number of whitespace
separators
--header Prepend a chart axis with minimum and maximum
values labeled
-H, --human-readable Format values using SI unit prefixes
+ --sexagesimal Convert seconds to HH:MM:SS time format
-t, --interval[=(N|-LINES)]
Output partial progress every given number of
seconds or input lines
-l, --length=[-]SIZE[%] Trim line contents (between number and bars)
- -L, --limit[=(N|-LAST|START-[END])]
- Stop output after a number of lines
+ -L, --limit=[N|[-]START(-[END]|+N)]
+ Select a range of lines to display
+ -e, --log Logarithmic (exponential) scale instead of linear
--graph-format=CHAR Glyph to repeat for the graph line
-m, --markers=FORMAT Statistical positions to indicate on bars
--min=N, --max=N Bars extend from 0 or the minimum value if lower
--palette=(PRESET|COLORS)
Override colors of parsed numbers
- --spark[=CHARS] Replace lines by sparklines
+ -_, --spark Replace lines by sparklines
+ --indicators[=CHARS] Prefix a unicode character corresponding to each
+ value
-s, --stat Total statistics after all data
-u, --unmodified Do not reformat values, keeping leading whitespace
--value-length=SIZE Reserved space for numbers
-w, --width=COLUMNS Override the maximum number of columns to use
-h, --usage Overview of available options
- --help Full documentation
- --version Version information
+ --help Full pod documentation
+ -V, --version Version information
=encoding utf8
=head1 NAME
-barcat - graph to visualize input values
+barcat - concatenate texts with graph to visualize values
=head1 SYNOPSIS
-B<barcat> [<options>] [<file>... | <numbers>]
+B<barcat> [I<options>] [I<file>... | I<numbers>]
=head1 DESCRIPTION
=over
-=item -a, --[no-]ascii
+=item B<-a>, B<-->[B<no->]B<ascii>
Restrict user interface to ASCII characters,
replacing default UTF-8 by their closest approximation.
Input is always interpreted as UTF-8 and shown as is.
-=item -c, --[no-]color
+=item B<-C>, B<-->[B<no->]B<color>
Force colored output of values and bar markers.
Defaults on if output is a tty,
disabled otherwise such as when piped or redirected.
+Can also be disabled by setting B<-M>
+or the I<NO_COLOR> environment variable.
+
+=item B<-c>, B<--count>
-=item -f, --field=(<number> | <regexp>)
+Omit repetitions and count the number of occurrences.
+Similar to piping input to C<sort | uniq -c>
+but keeping the order of first appearances.
+
+=item B<-f>, B<--field>=([B<+>]I<number> | I<regexp>)
Compare values after a given number of whitespace separators,
or matching a regular expression.
-Unspecified or I<-f0> means values are at the start of each line.
-With I<-f1> the second word is taken instead.
+Unspecified or B<-f0> means values are at the start of each line.
+With B<-f1> the second word is taken instead.
A string can indicate the starting position of a value
-(such as I<-f:> if preceded by colons),
+(such as B<-f:> if preceded by colons),
or capture the numbers itself,
-for example I<-f'(\d+)'> for the first digits anywhere.
+for example B<-f'(\d+)'> for the first digits anywhere.
+A shorthand for this is C<+0>, or C<+N> to find the Nth number.
-=item --header
+=item B<--header>
Prepend a chart axis with minimum and maximum values labeled.
-=item -H, --human-readable
+=item B<-H>, B<--human-readable>
Format values using SI unit prefixes,
-turning long numbers like I<12356789> into I<12.4M>.
-Also changes an exponent I<1.602176634e-19> to I<160.2z>.
+turning long numbers like C<12356789> into C<12.4M>.
+Also changes an exponent C<1.602176634e-19> to C<160.2z>.
Short integers are aligned but kept without decimal point.
-=item -t, --interval[=(<seconds> | -<lines>)]
+=item B<--sexagesimal>
+
+Convert seconds to HH:MM:SS time format.
+
+=item B<-t>, B<--interval>[=(I<seconds> | B<->I<lines>)]
Output partial progress every given number of seconds or input lines.
An update can also be forced by sending a I<SIGALRM> alarm signal.
-=item -l, --length=[-]<size>[%]
+=item B<-l>, B<--length>=[B<->]I<size>[B<%>]
Trim line contents (between number and bars)
to a maximum number of characters.
The exceeding part is replaced by an abbreviation sign,
-unless C<--length=0>.
+unless B<--length=0>.
Prepend a dash (i.e. make negative) to enforce padding
regardless of encountered contents.
-=item -L, --limit[=(<count> | -<last> | <start>-[<end>])]
+=item B<-L>, B<--limit>=[I<count> | [B<->]I<start>(B<->[I<end>] | B<+>I<count>)]
+
+Select a range of lines to display.
+A single integer indicates the last line number (like I<head>),
+or first line counting from the bottom if negative (like I<tail>).
-Stop output after a number of lines.
-A single value indicates the last line number (like C<head>),
-or first line counting from the bottom if negative (like C<tail>).
-A specific range can be given by two values.
+A range consists of a starting line number followed by either
+a dash C<-> to an optional end, or plus sign C<+> with count.
-All input is still counted and analyzed for statistics,
+All hidden input is still counted and analyzed for statistics,
but disregarded for padding and bar size.
-=item --graph-format=<character>
+=item B<-e>, B<--log>
+
+Logarithmic (B<e>xponential) scale instead of linear
+to compare orders of magnitude.
+
+=item B<--graph-format>=I<character>
Glyph to repeat for the graph line.
Defaults to a dash C<->.
-=item -m, --markers=<format>
+=item B<-m>, B<--markers>=I<format>
Statistical positions to indicate on bars.
A single indicator glyph precedes each position:
=over 2
-=item <number>
+=item I<number>
Exact value to match on the axis.
-A vertical bar at the zero crossing is displayed by I<|0>
+A vertical bar at the zero crossing is displayed by C<|0>
for negative values.
-For example I<:3.14> would show a colon at pi.
+For example C<π3.14> would locate pi.
+
+=item B</>I<interval>
-=item <percentage>I<v>
+Repeated at every multiple of a number.
+For example C<:/1> for a grid at every integer.
+
+=item I<percentage>B<v>
Ranked value at the given percentile.
-The default shows I<+> at I<50v> for the mean or median;
+The default shows C<+> at C<50v> for the mean or median;
the middle value or average between middle values.
-One standard deviation right of the mean is at about I<68.3v>.
-The default includes I<< >31.73v <68.27v >>
-to encompass all I<normal> results, or 68% of all entries, by B<< <--> >>.
+One standard deviation right of the mean is at about C<68.3v>.
+The default includes C<< >31.73v <68.27v >>
+to encompass all I<normal> results, or 68% of all entries, by I<< <--> >>.
Matches the average;
the sum of all values divided by the number of counted lines.
-Indicated by default as I<=>.
+Indicated by default as C<=>.
=back
-=item --min=<number>, --max=<number>
+=item B<--min>=I<number>, B<--max>=I<number>
Bars extend from 0 or the minimum value if lower,
to the largest value encountered.
These options can be set to customize this range.
-=item --palette=(<preset> | <color>...)
+=item B<--palette>=(I<preset> | I<color>...)
Override colors of parsed numbers.
-Can be any CSI escape, such as I<90> for default dark grey,
-or alternatively I<1;30> for bright black.
+Can be any CSI escape, such as C<90> for default dark gray,
+or alternatively C<1;30> for bright black.
In case of additional colors,
the last is used for values equal to the maximum, the first for minima.
-If unspecified, these are green and red respectively (I<31 90 32>).
+If unspecified, these are green and red respectively (C<31 90 32>).
Multiple intermediate colors will be distributed
relative to the size of values.
-Predefined color schemes are named I<whites> and I<fire>,
-or I<greys> and I<fire256> for 256-color variants.
+A non-numeric name can refer to a predefined color scheme:
+
+=over 8
+
+=item B<whites>
+
+Minimal set of monochrome brightnesses.
+
+=item B<grays>
+
+Utilize the 24 grayscale ramp in 256-color terminals.
+
+=item B<fire>
+
+Gradient red to white in 7 out of 16 colors.
+
+=item B<fire256>
+
+Extended to 17 colors out of 256.
+
+=item B<rainbow>
-=item --spark[=<characters>]
+Saturated red to green to blue to red.
+
+=item B<random>
+
+All 215 extended colors in unrelated orders.
+
+=back
+
+=item B<-_>, B<--spark>
Replace lines by I<sparklines>,
-single characters corresponding to input values.
-A specified sequence of unicode characters will be used for
-Of a specified sequence of unicode characters,
-the first one will be used for non-values,
-the last one for the maximum,
-the second (if any) for the minimum,
-and any remaining will be distributed over the range of values.
+single characters (configured by B<--indicators>)
+corresponding to input values.
+
+=item B<--indicators>[=I<characters>]
+
+Prefix a unicode character corresponding to each value.
+The first specified character will be used for non-values,
+the remaining sequence will be distributed over the range of values.
Unspecified, block fill glyphs U+2581-2588 will be used.
-=item -s, --stat
+=item B<-s>, B<--stat>
Total statistics after all data.
-=item -u, --unmodified
+While processing (possibly a neverending pipe),
+intermediate results are also shown on signal I<SIGINFO> if available (control+t on BSDs)
+or I<SIGQUIT> otherwise (ctrl+\ on linux).
+
+=item B<-u>, B<--unmodified>
Do not reformat values, keeping leading whitespace.
Keep original value alignment, which may be significant in some programs.
-=item --value-length=<size>
+=item B<--value-length>=I<size>
Reserved space for numbers.
-=item -w, --width=<columns>
+=item B<-w>, B<--width>=I<columns>
Override the maximum number of columns to use.
-Appended graphics will extend to fill up the entire screen.
+Appended graphics will extend to fill up the entire screen,
+otherwise determined by the environment variable I<COLUMNS>
+or by running the I<tput> command.
-=item -h, --usage
+=item B<-h>, B<--usage>
Overview of available options.
-=item --help
+=item B<--help>
-Full documentation
-rendered by perldoc.
+Full pod documentation
+as rendered by perldoc.
-=item --version
+=item B<-V>, B<--version>
Version information.
du -d0 -b * | barcat -H
+Same from formatted results, selecting the first numeric value:
+
+ tree -s --noreport | barcat -H -f+
+
+Compare media metadata, like image size or play time:
+
+ exiftool -T -p '$megapixels ($imagesize) $filename' * | barcat
+
+ exiftool -T -p '$duration# $avgbitrate# $filename' * | barcat --sexagesimal
+
+ find -type f -print0 | xargs -0 -L1 \
+ ffprobe -show_format -of json -v error |
+ jq -r '.format|.duration+" "+.bit_rate+" "+.filename' | barcat --sex
+
Memory usage of user processes with long names truncated:
- ps xo %mem,pid,cmd | barcat -l40
+ ps xo rss,pid,cmd | barcat -l40
Monitor network latency from prefixed results:
ping google.com | barcat -f'time=\K' -t
-Commonly used after counting, for example users on the current server:
-
- users | tr ' ' '\n' | sort | uniq -c | barcat
-
-Letter frequencies in text files:
+Commonly used after counting, eg letter frequencies in text files:
cat /usr/share/games/fortunes/*.u8 |
perl -CS -nE 'say for grep length, split /\PL*/, uc' |
sort | uniq -c | barcat
+Users on the current server while preserving order:
+
+ users | tr ' ' '\n' | barcat -c
+
Number of HTTP requests per day:
- cat log/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat
+ cat httpd/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat
-Any kind of database query with counts, preserving returned alignment:
+Any kind of database query results, preserving returned alignment:
- echo 'SELECT count(*),schemaname FROM pg_tables GROUP BY 2' |
+ echo 'SELECT sin(value * .1) FROM generate_series(0, 30) value' |
psql -t | barcat -u
-In PostgreSQL from within the client:
+In PostgreSQL from within the client; a fancy C<\dt+> perhaps:
+
+ > SELECT schemaname, relname, pg_total_relation_size(relid)
+ FROM pg_statio_user_tables ORDER BY idx_blks_hit
+ \g |barcat -uHf+
- postgres=> SELECT sin(generate_series(0, 3, .1)) \g |barcat
+Same thing in SQLite (requires the sqlite3 client):
+
+ > .once |barcat -Hf+
+ > SELECT name, sum(pgsize) FROM dbstat GROUP BY 1;
Earthquakes worldwide magnitude 1+ in the last 24 hours:
curl https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/1.0_day.csv |
- column -tns, | barcat -f4 -u -l80%
+ column -ts, -n | barcat -f4 -u -l80%
External datasets, like movies per year:
curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json -L |
- perl -054 -nlE 'say if s/^"year"://' | uniq -c | barcat
-
-But please get I<jq> to process JSON
-and replace the manual selection by C<< jq '.[].year' >>.
+ jq .[].year | uniq -c | barcat
Pokémon height comparison:
curl https://sdw.ecb.europa.eu/export.do \
-Gd 'node=SEARCHRESULTS&q=EXR.D.USD.EUR.SP00.A&exportType=csv' |
- grep '^[12]' | barcat -f',\K' --value-length=7
+ barcat -f',\K' --value-length=7
Total population history in XML from the World Bank:
- curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL -L |
- xmllint --xpath '//*[local-name()="date" or local-name()="value"]' - |
- sed -r 's,</wb:value>,\n,g; s,(<[^>]+>)+, ,g' | barcat -f1 -H
+ curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL |
+ xmlstarlet sel -t -m '*/*' -v wb:date -o ' ' -v wb:value -n |
+ barcat -f1 -H --markers=+/1e9
+
+Population and other information for all countries:
+
+ curl http://download.geonames.org/export/dump/countryInfo.txt |
+ grep -v '^#\s' | column -ts$'\t' -n | barcat -f+2 -e -u -l150 -s
And of course various Git statistics, such commit count by year:
git shortlog -sn | barcat -L3 -s
-Sparkline graphics of simple input given as inline parameters:
-
- barcat --spark= 3 1 4 1 5 0 9 2 4
-
Activity graph 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--' | barcat --spark
+Sparkline graphics of simple input given as inline parameters:
+
+ barcat -_ 3 1 4 1 5 0 9 2 4
+
+Misusing the spark functionality to draw a lolcat line:
+
+ seq $(tput cols) | barcat --spark --indicator=- --palette=rainbow
+
=head1 AUTHOR
Mischa POSLAWSKY <perl@shiar.org>
git.shiar.nl / barcat.git / blobdiff