File Coverage

blib/lib/String/LineNumber.pm

Criterion	Covered	Total	%
statement	21	21	100.0
branch	4	4	100.0
condition	14	14	100.0
subroutine	5	5	100.0
pod	1	1	100.0
total	45	45	100.0

package String::LineNumber;

our $DATE = '2014-12-10'; # DATE
our $VERSION = '0.01'; # VERSION

use 5.010001;
use strict;
use warnings;

use Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw(
                       linenum
               );

sub linenum {
    my ($str, $opts) = @_;
    $opts //= {};
    $opts->{width}      //= 4;
    $opts->{zeropad}    //= 0;
    $opts->{skip_empty} //= 1;

    my $i = 0;
    $str =~ s/^(([\t ]*\S)?.*)/
        sprintf(join("",
                     "%",
                     ($opts->{zeropad} && !($opts->{skip_empty}
                                                && !defined($2)) ? "0" : ""),
                     $opts->{width}, "s",
                     "|%s"),
                ++$i && $opts->{skip_empty} && !defined($2) ? "" : $i,
                $1)/meg;

    $str;
}

1;
# ABSTRACT: Give line number to each line of string

__END__