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;
},
'human-readable|H!',
'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',
}
$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{'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{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
sub show_lines {
state $nr =
- $opt{hidemin} < 0 ? @lines + $opt{hidemin} + 1 :
+ $opt{hidemin} < 0 ? max(0, @lines + $opt{hidemin} + 1) :
$opt{hidemin};
@lines > $nr or return;
if ($opt{hidemin} and $opt{hidemin} < 0) {
$limit -= $opt{hidemax} - 1;
}
- else {
+ elsif ($opt{hidemax} <= $limit) {
$limit = $opt{hidemax} - 1;
}
}
while ($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} && $opt{indicators}->[
- !$val || !$#{$opt{indicators}} ? 0 : # blank
+ !length($val) || !$#{$opt{indicators}} ? 0 : # blank
$#{$opt{indicators}} < 2 ? 1 :
$val >= $order[0] ? -1 :
$rel * ($#{$opt{indicators}} - 1e-14) + 1
(u u)
Options:
-a, --[no-]ascii Restrict user interface to ASCII characters
- -c, --[no-]color Force colored output of values and bar markers
- -f, --field=(N|REGEXP) Compare values after a given number of whitespace
+ -C, --[no-]color Force colored output of values and bar markers
+ -f, --field=([+]N|REGEXP)
+ Compare values after a given number of whitespace
separators
--header Prepend a chart axis with minimum and maximum
values labeled
replacing default UTF-8 by their closest approximation.
Input is always interpreted as UTF-8 and shown as is.
-=item -c, --[no-]color
+=item -C, --[no-]color
Force colored output of values and bar markers.
Defaults on if output is a tty,
disabled otherwise such as when piped or redirected.
+Can also be disabled by setting I<-M>
+or the I<NO_COLOR> environment variable.
-=item -f, --field=(<number> | <regexp>)
+=item -f, --field=([+]<number> | <regexp>)
Compare values after a given number of whitespace separators,
or matching a regular expression.
(such as I<-f:> if preceded by colons),
or capture the numbers itself,
for example I<-f'(\d+)'> for the first digits anywhere.
+A shorthand for this is I<+0>, or I<+N> to find the Nth number.
=item --header
du -d0 -b * | barcat -H
+Same from formatted results, selecting the first numeric value:
+
+ tree -s --noreport | barcat -H -f+
+
+Compare media metadata, like image size or play time:
+
+ exiftool -T -p '$megapixels ($imagesize) $filename' * | barcat
+
+ exiftool -T -p '$duration# $avgbitrate# $filename' * | barcat -H
+
+ find -type f -print0 | xargs -0 -L1 \
+ ffprobe -show_format -of json -v error |
+ jq -r '[.format|.duration,.bit_rate,.filename]|join(" ")' | barcat -H
+
Memory usage of user processes with long names truncated:
- ps xo %mem,pid,cmd | barcat -l40
+ ps xo rss,pid,cmd | barcat -l40
Monitor network latency from prefixed results:
Number of HTTP requests per day:
- cat log/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat
+ cat httpd/access.log | cut -d\ -f4 | cut -d: -f1 | uniq -c | barcat
Any kind of database query with counts, preserving returned alignment:
In PostgreSQL from within the client:
- postgres=> SELECT sin(generate_series(0, 3, .1)) \g |barcat
+ > SELECT sin(generate_series(0, 3, .1)) \g |barcat
Earthquakes worldwide magnitude 1+ in the last 24 hours:
External datasets, like movies per year:
curl https://github.com/prust/wikipedia-movie-data/raw/master/movies.json -L |
- perl -054 -nlE 'say if s/^"year"://' | uniq -c | barcat
-
-But please get I<jq> to process JSON
-and replace the manual selection by C<< jq '.[].year' >>.
+ jq .[].year | uniq -c | barcat
Pokémon height comparison:
curl https://sdw.ecb.europa.eu/export.do \
-Gd 'node=SEARCHRESULTS&q=EXR.D.USD.EUR.SP00.A&exportType=csv' |
- grep '^[12]' | barcat -f',\K' --value-length=7
+ barcat -f',\K' --value-length=7
Total population history in XML from the World Bank:
- curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL -L |
- xmllint --xpath '//*[local-name()="date" or local-name()="value"]' - |
- sed -r 's,</wb:value>,\n,g; s,(<[^>]+>)+, ,g' | barcat -f1 -H
+ curl http://api.worldbank.org/v2/country/1W/indicator/SP.POP.TOTL |
+ xmlstarlet sel -t -m '*/*' -v wb:date -o ' ' -v wb:value -n |
+ barcat -f1 -H
+
+Population and other information for all countries:
+
+ curl http://download.geonames.org/export/dump/countryInfo.txt |
+ grep -v '^#\s' | column -tns$'\t' | barcat -f+2 -u -l150 -s
And of course various Git statistics, such commit count by year:
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