histogram: now with man page

This commit is contained in:
Ole Tange 2012-05-19 21:44:06 +02:00
parent 038752f666
commit ca9212fcd7
2 changed files with 294 additions and 22 deletions

View file

@ -1,8 +1,11 @@
all: blink/blink.1 all: blink/blink.1 histogram/histogram.1
blink/blink.1: blink/blink blink/blink.1: blink/blink
pod2man blink/blink > blink/blink.1 pod2man blink/blink > blink/blink.1
histogram/histogram.1: histogram/histogram
pod2man histogram/histogram > histogram/histogram.1
install: install:
parallel ln -sf `pwd`/{}/{} /usr/local/bin/{} ::: blink reniced em field forever neno rn stdout tracefile w4it-for-port-open upsidedown histogram parallel ln -sf `pwd`/{}/{} /usr/local/bin/{} ::: blink reniced em field forever neno rn stdout tracefile w4it-for-port-open upsidedown histogram
parallel ln -sf `pwd`/{}/{}.1 /usr/local/share/man/man1/{}.1 ::: blink parallel ln -sf `pwd`/{}/{}.1 /usr/local/share/man/man1/{}.1 ::: blink histogram

View file

@ -1,45 +1,307 @@
#!/usr/bin/perl -w #!/usr/bin/perl -w
=head1 NAME
histogram - make a histogram on the command line
=head1 SYNOPSIS
B<histogram> [--delimiter <delim>|-d <delim>] [--pre|--post] [--log|-l] [--values-as-headers|-t] <list of numbers>
B<cat> <file with numbers> | B<histogram> [options]
=head1 DESCRIPTION
B<histogram> creates a bar chart in your terminal of data. The width
of the histogram is scaled to fit your terminal and uses a resolution
of 1/8th of a character.
The list of numbers can be formatted as:
=over 2
=item *
Line with CSV: B<histogram> -d , 1,1.02,3.1
=item *
Line with white space separated values: B<histogram> 1 1.02 3.1
=item *
Line with white space separated headers+values: B<histogram> a 1 b 1.02 c 3.1
=item *
One value per line: (echo 1; echo 1.02; echo 3.1) | B<histogram>
=item *
One white space separated header+value per line: (echo a 1; echo b 1.02; echo c 3.1) | B<histogram>
=item *
One comma separated header+value per line: (echo a,1; echo b,1.02; echo c,3.1) | B<histogram> -d ,
=back
=head1 OPTIONS
=over 9
=item B<--delimiter> I<delim>
=item B<-d> I<delim>
Use I<delim> as delimiter between elements.
=item B<--log>
=item B<-l>
Take the logarithm of all values.
=item B<--pre>
Put the header before the bar.
See also: B<--post>
=item B<--post>
Put the header after the bar.
See also: B<--pre>
=item B<--values-as-headers>
=item B<-t>
Use the numbers as headers.
=back
=head1 BUGS
None known.
=head1 REPORTING BUGS
Report bugs to <bug-parallel@gnu.org>.
=head1 AUTHOR
Copyright (C) 2012 Ole Tange, http://ole.tange.dk and Free
Software Foundation, Inc.
=head1 LICENSE
Copyright (C) 2012 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
at your option any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
=head2 Documentation license I
Permission is granted to copy, distribute and/or modify this documentation
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no
Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
Texts. A copy of the license is included in the file fdl.txt.
=head2 Documentation license II
You are free:
=over 9
=item B<to Share>
to copy, distribute and transmit the work
=item B<to Remix>
to adapt the work
=back
Under the following conditions:
=over 9
=item B<Attribution>
You must attribute the work in the manner specified by the author or
licensor (but not in any way that suggests that they endorse you or
your use of the work).
=item B<Share Alike>
If you alter, transform, or build upon this work, you may distribute
the resulting work only under the same, similar or a compatible
license.
=back
With the understanding that:
=over 9
=item B<Waiver>
Any of the above conditions can be waived if you get permission from
the copyright holder.
=item B<Public Domain>
Where the work or any of its elements is in the public domain under
applicable law, that status is in no way affected by the license.
=item B<Other Rights>
In no way are any of the following rights affected by the license:
=over 2
=item *
Your fair dealing or fair use rights, or other applicable
copyright exceptions and limitations;
=item *
The author's moral rights;
=item *
Rights other persons may have either in the work itself or in
how the work is used, such as publicity or privacy rights.
=back
=back
=over 9
=item B<Notice>
For any reuse or distribution, you must make clear to others the
license terms of this work.
=back
A copy of the full license is included in the file as cc-by-sa.txt.
=head1 DEPENDENCIES
B<histogram> uses Perl, and the Perl module Getopt::Long.
=head1 SEE ALSO
B<cut>(1)
=cut
# histogram -d , a1,b2,c3 d4,5,e76
# histogram 1 2 3 # histogram 1 2 3
# histogram a:1 b:2 c:3 # histogram a:1 b:2 c:3
# histogram "a a":1 b:2 c:3 # histogram "a a":1 b:2 c:3
# histogram "a a" 1 b 2 c 3 # histogram "a a" 1 b 2 c 3
# (echo a a 1; echo b 2; echo c 3) | histogram # (echo a a 1; echo b 2; echo c 3) | histogram
# # histogram --post aaaaaaaaaaa1 b10
my $raw; use strict;
use Getopt::Long;
GetOptions
("delimiter|d=s" => \$::opt_delimiter,
"values-as-headers|t" => \$::opt_vash,
"pre" => \$::opt_pre,
"post" => \$::opt_post,
"log" => \$::opt_log,
) || die_usage();
my @raw;
if($#ARGV != -1) { if($#ARGV != -1) {
@raw = @ARGV; @raw = @ARGV;
} else { } else {
@raw = (<>); @raw = (<>);
chomp @raw; chomp @raw;
} }
if($::opt_delimiter) {
my @my_raw = ();
for(@raw) {
push(@my_raw,split/$::opt_delimiter/,$_);
}
@raw = @my_raw;
}
my @header=(); my @header=();
my @value=();
my $has_header = 0; my $has_header = 0;
my $i = 0;
for(@raw) { for(@raw) {
if(s/\s*(\d+(\.\d)?([eE][-+]?\d+)?)\s*$//) { if(s/\s*(\d+(\.\d+)?([eE][-+]?\d+)?)\s*$//) {
push(@values, eval $1); push(@value, eval $1);
} }
if(/\S/) { if(/\S/) {
push(@header, $_); $header[$i] = $_;
$i++;
if(not $::opt_pre and not $::opt_post) {
# There is a header, so you probably want it printed
$::opt_pre = 1;
}
} }
} }
if($numbers_as_headers) {
@header = @values; if($::opt_vash or not @header) {
@header = @value;
} else {
@header = map { defined $_ ? $_ : "" } @header;
} }
my $max = max(@values); if($::opt_log) {
@value = map { $_ > 0 ? log($_) : 0 } @value;
}
my $max = max(@value);
my @header_len = map { length $_ } @header; my @header_len = map { length $_ } @header;
my $max_header_len = max(@header_len) || 0; my $max_header_len = max(@header_len) || 0;
my $width = terminal_width()-$max_header_len-2;
my $factor = $width/$max;
for(my $i = 0; $i <= $#values; $i++) { for(my $i = 0; $i <= $#value; $i++) {
if($pre) { if($::opt_pre) {
bar(sprintf("%".$max_header_len."s",$header[$i]),$values[$i]*$factor); if($::opt_post) {
bar($header[$i]." ",$value[$i]," ".$header[$i],$max,$max_header_len);
} else { } else {
bar("",$values[$i]*$factor,$header[$i]); bar($header[$i]." ",$value[$i],"",$max,$max_header_len);
}
} elsif($::opt_post) {
bar("",$value[$i]," ".$header[$i],$max,$max_header_len);
} else {
bar("",$value[$i],"",$max,$max_header_len);
} }
} }
@ -69,11 +331,18 @@ sub terminal_width {
} }
sub bar { sub bar {
my ($pre,$l,$post) = @_; my ($pre,$v,$post,$max,$max_header_len) = @_;
my @eight = qw(█ ▉ ▊ ▋ ▌ ▍ ▎ ▏); my @eight = qw(█ ▉ ▊ ▋ ▌ ▍ ▎ ▏);
$pre &&= $pre." "; push @eight,"";
$post &&= " ".$post; my $header_len = ($pre ? $max_header_len+1 : 0) + ($post ? $max_header_len+1 : 0);
$pre ||=""; my $width = terminal_width()-$header_len;
$post ||=""; my $factor = $width/$max;
print $pre,$eight[0] x $l, $eight[7-($l*8)%8],$post,"\n"; my $l = $v*$factor;
my $pres = "";
if($pre) {
$pres = sprintf("%".($max_header_len+1)."s",$pre)
}
print $pres,$eight[0] x $l, $eight[8-($l*8)%8],$post,"\n";
} }