File Coverage

blib/lib/Data/Unixish/grep.pm

Criterion	Covered	Total	%
statement	30	32	93.7
branch	8	12	66.6
condition			n/a
subroutine	8	8	100.0
pod	1	1	100.0
total	47	53	88.6

package Data::Unixish::grep;

use 5.010;
use locale;
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 = '1.570'; # VERSION

our %SPEC;

$SPEC{grep} = {
    v => 1.1,
    summary => 'Perl grep',
    description => <<'_',

Filter each item through a callback.

_
    args => {
        %common_args,
        callback => {
            summary => 'The callback code or regexp to use',
            schema  => ['any*' => of => ['str*', 're*', 'code*']],
            req     => 1,
            pos     => 0,
        },
    },
    tags => [qw/filtering perl unsafe/],
};
sub grep {
    my %args = @_;
    my ($in, $out) = ($args{in}, $args{out});
    my $callback = $args{callback} or die "missing callback for grep";
    if (ref($callback) eq ref(qr{})) {
        my $re = $callback;
        $callback = sub { $_ =~ $re };
    } elsif (ref($callback) ne 'CODE') {
        if ($args{-cmdline}) {
            $callback = eval "no strict; no warnings; sub { $callback }";
            die "invalid code for grep: $@" if $@;
        } else {
            die "Please supply coderef (or regex) for 'callback'";
        }
    }

    local ($., $_);
    while (($., $_) = each @$in) {
        push @$out, $_ if $callback->();
    }

    [200, "OK"];
}

1;
# ABSTRACT: Perl grep

__END__