File Coverage

blib/lib/Sort/Sub/by_example.pm

Criterion	Covered	Total	%
statement	20	28	71.4
branch	5	12	41.6
condition			n/a
subroutine	5	7	71.4
pod	0	2	0.0
total	30	49	61.2

package Sort::Sub::by_example;

our $AUTHORITY = 'cpan:PERLANCAR'; # AUTHORITY
our $DATE = '2020-05-24'; # DATE
our $DIST = 'Sort-Sub-by_example'; # DIST
our $VERSION = '0.001'; # VERSION

use 5.010001;
use strict;
use warnings;

sub meta {
    return {
        v => 1,
        summary => 'Sort by example',
        args => {
            example => {
                summary => 'Either an arrayref or comma-separated string',
                schema => ['any' => {of=>['array*', 'str*']}],
                req => 1,
                pos => 0,
            },
        },
    };
}

sub gen_sorter {
    require Sort::ByExample;

    my ($is_reverse, $is_ci, $args) = @_;

    die "Reverse sorting not yet supported" if $is_reverse;

    my $example = ref $args->{example} eq 'ARRAY' ?
        [@{$args->{example}}] : [split /\s*,\s*/, $args->{example}];
    $example = [map {lc} @$example] if $is_ci;

    my $cmp = Sort::ByExample->cmp($example);
    if ($is_reverse) {
        return sub {
            no strict 'refs';

            my $caller = caller();
            my $a = @_ ? $_[0] : ${"$caller\::a"};
            my $b = @_ ? $_[1] : ${"$caller\::b"};
        };
    } else {
        return $cmp;
    }
}

1;
# ABSTRACT: Sort by example

__END__