use open qw( :std :utf8 );
use re '/msx';
-our $VERSION = '1.07';
+our $VERSION = '1.08';
-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,
- 'color|c!',
- 'C' => sub { $opt{color} = 0 },
+ 'ascii|a!',
+ 'color|C!',
+ 'M' => sub { $opt{color} = 0 },
'field|f=s' => sub {
eval {
local $_ = $_[1];
'limit|L:s' => sub {
my ($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(
+ $optval =~ m/\A (?: (-? [0-9]+)? - )? ([0-9]+)? \z/ or die(
"Value \"$optval\" invalid for option limit",
" (range expected)\n"
);
'graph-format=s' => sub {
$opt{'graph-format'} = substr $_[1], 0, 1;
},
- 'spark:s' => sub {
- $opt{spark} = [split //, $_[1] || ' ▁▂▃▄▅▆▇█'];
- },
+ '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;]/, $_[1] ];
+ greys => [map {"38;5;$_"} 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!',
'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 {
- local $/ = undef; # slurp
- my $pod = readline *DATA;
- $pod =~ s/^=over\K/ 25/; # indent options list
- $pod =~ s/^=item\ \N*\n\n\N*\n\K (?:(?:^=over.*?^=back\n)?(?!=)\N*\n)*/\n/g;
- $pod =~ s/[.,](?=\n)//g; # trailing punctuation
- $pod =~ s/^=item\ \K(?=--)/____/g; # align long options
- # abbreviate <variable> indicators
- $pod =~ s/\Q>.../s>/g;
- $pod =~ s/<(?:number|count|seconds)>/N/g;
- $pod =~ s/<character(s?)>/\Uchar$1/g;
- $pod =~ s/\Q | /|/g;
- $pod =~ s/(?<!\w)<([a-z]+)>/\U$1/g; # uppercase
-
- require Pod::Usage;
- my $parser = Pod::Usage->new(USAGE_OPTIONS => {
- -indent => 2, -width => 78,
- });
- $parser->select('SYNOPSIS', 'OPTIONS');
- $parser->output_string(\my $contents);
- $parser->parse_string_document($pod);
-
- $contents =~ s/\n(?=\n\h)//msg; # strip space between items
- $contents =~ s/^\ \ \K____/ /g; # nbsp substitute
- print $contents;
+ /^=/ ? last : print for readline *DATA; # text between __END__ and pod
exit;
},
'help|?' => 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 //, ' kMGTPEZYyzafpnμm'] if $opt{'human-readable'};
+$opt{units} = [split //, ' kMGTPEZYyzafpn'.($opt{ascii} ? 'u' : 'μ').'m']
+ if $opt{'human-readable'};
$opt{anchor} //= qr/\A/;
$opt{'value-length'} = 6 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{palette} //= $opt{color} && [31, 90, 32];
+$opt{indicators} = [split //, $opt{indicators} ||
+ ($opt{ascii} ? ' .oO' : $opt{spark} ? ' ▁▂▃▄▅▆▇█' : ' ▏▎▍▌▋▊▉█')
+] if defined $opt{indicators} or $opt{spark};
$opt{hidemin} = ($opt{hidemin} || 1) - 1;
$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 = (
+ log(abs $_[0] || 1) / log(10)
+ - 3 * (abs($_[0]) < .9995) # shift to smaller unit if below 1
+ + 1e-15 # float imprecision
+ );
+ 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
+ $decimal, # tenths
+ $_[0] / 1000 ** int($unit/3), # number
+ $#{$opt{units}} * 1.5 < abs $unit ? sprintf('e%d', $unit) :
+ $opt{units}->[$unit/3] # suffix
+ );
+};
+
+
my (@lines, @values, @order);
$SIG{$_} = \&show_stat for $opt{'signal-stat'} || ();
$_ = substr $_, 0, 2;
}
elsif (length > $trimpos) {
- substr($_, $trimpos - 1) = '…';
+ # cut and replace (intentional lvalue for speed, contrary to PBP)
+ substr($_, $trimpos - 1) = $opt{ascii} ? '>' : '…';
}
}
push @lines, $_;
$_ = color(@_) . $_ . color(0) if defined;
}
-sub sival {
- my $unit = int(log(abs $_[0] || 1) / log(10) - 3*($_[0] < 1) + 1e-15);
- my $float = $_[0] !~ /\A0*[-0-9]{1,3}\z/;
- return sprintf('%3.*f%1s',
- $float && ($unit % 3) == ($unit < 0), # tenths
- $_[0] / 1000 ** int($unit/3), # number
- $#{$opt{units}} * 1.5 < abs $unit ? "e$unit" : $opt{units}->[$unit/3]
- );
-}
-
sub show_lines {
-state $nr = $opt{hidemin};
-@lines or return;
+state $nr =
+ $opt{hidemin} < 0 ? max(0, @lines + $opt{hidemin} + 1) :
+ $opt{hidemin};
@lines > $nr or return;
+my $limit = $#lines;
+if (defined $opt{hidemax}) {
+ if ($opt{hidemin} and $opt{hidemin} < 0) {
+ $limit -= $opt{hidemax} - 1;
+ }
+ elsif ($opt{hidemax} <= $limit) {
+ $limit = $opt{hidemax} - 1;
+ }
+}
+
@order = sort { $b <=> $a } @order unless tied @order;
my $maxval = $opt{maxval} // (
- $opt{hidemax} ? max grep { length } @values[0 .. $opt{hidemax} - 1] :
+ $opt{hidemax} ? max grep { length } @values[$nr .. $limit] :
$order[0]
) // 0;
my $minval = $opt{minval} // min $order[-1] // (), 0;
my $len = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 :
max map { length $values[$_] && length $lines[$_] }
0 .. min $#lines, $opt{hidemax} || (); # left padding
-my $size = $range &&
- ($opt{width} - $lenval - $len) / $range; # bar multiplication
+my $size = defined $opt{width} && $range &&
+ ($opt{width} - $lenval - $len - !!$opt{indicators}) / $range; # bar multiplication
my @barmark;
if ($opt{markers} and $size > 0) {
return sum(@order) / @order;
}
elsif ($func =~ /\A([0-9.]+)v\z/) {
+ die "Invalid marker $char: percentile $1 out of bounds\n" if $1 > 100;
my $index = $#order * $1 / 100;
return ($order[$index] + $order[$index + .5]) / 2;
}
- else {
+ elsif ($func =~ /\A-?[0-9.]+\z/) {
return $func;
}
- } - $minval;
+ else {
+ die "Unknown marker $char: $func\n";
+ }
+ };
+ defined $pos or do {
+ warn $@ if $@;
+ next;
+ };
+ $pos -= $minval;
$pos >= 0 or next;
color(36) for $barmark[$pos * $size] = $char;
}
color(0),
) if $opt{header};
-while ($nr <= $#lines) {
- $nr >= $opt{hidemax} and last if defined $opt{hidemax};
+while ($nr <= $limit) {
my $val = $values[$nr];
- my $rel = length $val && $range && ($val - $minval) / $range;
+ my $rel = length $val && $range && min(1, ($val - $minval) / $range);
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 ? 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 = $opt{units} ? sival($val) : sprintf "%*s", $lenval, $val;
+ $val = $opt{'value-format'} ? $opt{'value-format'}->($val) :
+ sprintf "%*s", $lenval, $val;
color($color) for $val;
}
my $line = $lines[$nr] =~ s/\n/$val/r;
+ if (not length $val) {
+ say $line;
+ next;
+ }
printf '%-*s', $len + length($val), $line;
print $barmark[$_] // $opt{'graph-format'}
for 1 .. $size && (($values[$nr] || 0) - $minval) * $size + .5;
sub show_stat {
if ($opt{hidemin} or $opt{hidemax}) {
- printf '%s of ', sum(grep { length }
- @values[$opt{hidemin} .. ($opt{hidemax} || @lines) - 1]
- ) // 0;
+ 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
+ );
}
if (@order) {
my $total = sum @order;
- printf '%s total', color(1) . sprintf('%.8g', $total) . color(0);
+ 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) . $order[-1] . color(0),
- color(36) . (sprintf '%*.*f', 0, 2, $total / @order) . color(0),
- color(32) . $order[0] . color(0),
+ color(31) . ($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),
);
}
say '';
show_exit();
__END__
+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
+ separators
+ --header Prepend a chart axis with minimum and maximum
+ values labeled
+ -H, --human-readable Format values using SI unit prefixes
+ -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
+ --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 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 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
=over
-=item -c, --[no-]color
+=item -a, --[no-]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
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 I<-M>
+or the I<NO_COLOR> environment variable.
=item -f, --field=(<number> | <regexp>)
Prepend a dash (i.e. make negative) to enforce padding
regardless of encountered contents.
-=item -L, --limit[=(<count> | <start>-[<end>])]
+=item -L, --limit[=(<count> | -<last> | <start>-[<end>])]
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.
+
All input is still counted and analyzed for statistics,
but disregarded for padding and bar size.
Predefined color schemes are named I<whites> and I<fire>,
or I<greys> and I<fire256> for 256-color variants.
-=item --spark[=<characters>]
+=item -_, --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 C<--indicators>)
+corresponding to input values.
+
+=item --indicators[=<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 --help
-Full documentation
-rendered by perldoc.
+Full pod documentation
+as rendered by perldoc.
-=item --version
+=item -V, --version
Version information.
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:
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:
In PostgreSQL from within the client:
- postgres=> SELECT sin(generate_series(0, 3, .1)) \g |barcat
+ > SELECT sin(generate_series(0, 3, .1)) \g |barcat
Earthquakes worldwide magnitude 1+ in the last 24 hours:
- https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/1.0_day.csv |
+ curl https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/1.0_day.csv |
column -tns, | barcat -f4 -u -l80%
External datasets, like movies per year:
- curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json |
- 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' >>.
+ curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json -L |
+ jq .[].year | uniq -c | barcat
Pokémon height comparison:
- curl https://github.com/Biuni/PokemonGO-Pokedex/raw/master/pokedex.json |
+ curl https://github.com/Biuni/PokemonGO-Pokedex/raw/master/pokedex.json -L |
jq -r '.pokemon[] | [.height,.num,.name] | join(" ")' | barcat
USD/EUR exchange rate from CSV provided by the ECB:
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 |
- xmllint --xpath '//*[local-name()="date" or local-name()="value"]' - |
- sed -r 's,</wb:value>,\n,g; s,(<[^>]+>)+, ,g' | barcat -f1 -H
+ xmlstarlet sel -t -m '*/*' -v wb:date -o ' ' -v wb:value -n |
+ barcat -f1 -H
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