package Data::Unixish::sort;
use 5.010;
use strict;
use syntax 'each_on_array'; # to support perl < 5.12
use warnings;
#use Log::Any '$log';
use Data::Unixish::Util qw(%common_args);
our $VERSION = '1.52'; # VERSION
our %SPEC;
$SPEC{sort} = {
v => 1.1,
summary => 'Sort items',
description => <<'_',
By default sort ascibetically, unless `numeric` is set to true to sort
numerically.
_
args => {
%common_args,
numeric => {
summary => 'Whether to sort numerically',
schema=>[bool => {default=>0}],
cmdline_aliases => { n=>{} },
},
reverse => {
summary => 'Whether to reverse sort result',
schema=>[bool => {default=>0}],
cmdline_aliases => { r=>{} },
},
ci => {
summary => 'Whether to ignore case',
schema=>[bool => {default=>0}],
cmdline_aliases => { i=>{} },
},
random => {
summary => 'Whether to sort by random',
schema=>[bool => {default=>0}],
cmdline_aliases => { R=>{} },
},
},
tags => [qw/ordering/],
};
sub sort {
my %args = @_;
my ($in, $out) = ($args{in}, $args{out});
my $numeric = $args{numeric};
my $reverse = $args{reverse} ? -1 : 1;
my $ci = $args{ci};
my $random = $args{random};
no warnings;
my @buf;
# special case
if ($random) {
require List::Util;
while (my ($index, $item) = each @$in) {
push @buf, $item;
}
push @$out, $_ for (List::Util::shuffle(@buf));
return [200, "OK"];
}
while (my ($index, $item) = each @$in) {
my $rec = [$item];
push @$rec, $ci ? lc($item) : undef; # cache lowcased item
push @$rec, $numeric ? $item+0 : undef; # cache numeric item
push @buf, $rec;
}
my $sortsub;
if ($numeric) {
$sortsub = sub { $reverse * (
($a->[2] <=> $b->[2]) ||
($ci ? ($a->[1] cmp $b->[1]) : ($a->[0] cmp $b->[0]))) };
} else {
$sortsub = sub { $reverse * (
$ci ? ($a->[1] cmp $b->[1]) : ($a->[0] cmp $b->[0])) };
}
@buf = sort $sortsub @buf;
push @$out, $_->[0] for @buf;
[200, "OK"];
}
1;
# ABSTRACT: Sort items
__END__
=pod
=encoding UTF-8
=head1 NAME
Data::Unixish::sort - Sort items
=head1 VERSION
This document describes version 1.52 of Data::Unixish::sort (from Perl distribution Data-Unixish), released on 2015-11-22.
=head1 SYNOPSIS
In Perl:
use Data::Unixish qw(lduxl);
my @res;
@res = lduxl('sort', 4, 7, 2, 5); # => (2, 4, 5, 7)
@res = lduxl([sort => {reverse=>1}], 4, 7, 2, 5); # => (7, 5, 4, 2)
In command line:
% echo -e "b\na\nc" | dux sort --format=text-simple
a
b
c
=head1 SEE ALSO
sort(1)
=head1 FUNCTIONS
=head2 sort(%args) -> [status, msg, result, meta]
Sort items.
By default sort ascibetically, unless C<numeric> is set to true to sort
numerically.
This function is not exportable.
Arguments ('*' denotes required arguments):
=over 4
=item * B<ci> => I<bool> (default: 0)
Whether to ignore case.
=item * B<in> => I<array>
Input stream (e.g. array or filehandle).
=item * B<numeric> => I<bool> (default: 0)
Whether to sort numerically.
=item * B<out> => I<any>
Output stream (e.g. array or filehandle).
=item * B<random> => I<bool> (default: 0)
Whether to sort by random.
=item * B<reverse> => I<bool> (default: 0)
Whether to reverse sort result.
=back
Returns an enveloped result (an array).
First element (status) is an integer containing HTTP status code
(200 means OK, 4xx caller error, 5xx function error). Second element
(msg) is a string containing error message, or 'OK' if status is
200. Third element (result) is optional, the actual result. Fourth
element (meta) is called result metadata and is optional, a hash
that contains extra information.
Return value: (any)
=head1 HOMEPAGE
Please visit the project's homepage at L<https://metacpan.org/release/Data-Unixish>.
=head1 SOURCE
Source repository is at L<https://github.com/sharyanto/perl-Data-Unixish>.
=head1 BUGS
Please report any bugs or feature requests on the bugtracker website L<https://rt.cpan.org/Public/Dist/Display.html?Name=Data-Unixish>
When submitting a bug or request, please include a test-file or a
patch to an existing test-file that illustrates the bug or desired
feature.
=head1 AUTHOR
perlancar <perlancar@cpan.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by perlancar@cpan.org.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut