File Coverage

blib/lib/String/CommonSuffix.pm

Criterion	Covered	Total	%
statement	19	21	90.4
branch	6	8	75.0
condition			n/a
subroutine	5	5	100.0
pod	1	1	100.0
total	31	35	88.5

package String::CommonSuffix;

use 5.010001;
use strict;
use warnings;

our $AUTHORITY = 'cpan:PERLANCAR'; # AUTHORITY
our $DATE = '2025-08-02'; # DATE
our $DIST = 'String-CommonPrefix'; # DIST
our $VERSION = '0.021'; # VERSION

use Exporter qw(import);

our @EXPORT_OK = qw(
                       common_suffix
               );

sub common_suffix {
    require List::Util;

    return undef unless @_; ## no critic: Subroutines::ProhibitExplicitReturnUndef
    my $i;
  L1:
    for ($i = 0; $i < length($_[0]); $i++) {
        for (@_[1..$#_]) {
            if (length($_) < $i) {
                $i--; last L1;
            } else {
                last L1 if substr($_, -($i+1), 1) ne substr($_[0], -($i+1), 1);
            }
        }
    }
    $i ? substr($_[0], -$i) : "";
}

1;
# ABSTRACT: Return suffix common to all strings

__END__