—

              
package Term::Table::LineBreak;
use strict;
use warnings;
our $VERSION = '0.024';
use Carp qw/croak/;
use Scalar::Util qw/blessed/;
use Term::Table::Util qw/uni_length/;
use Term::Table::HashBase qw/string gcstring _len _parts idx/;
sub init {
    my $self = shift;
    croak "string is a required attribute"
        unless defined $self->{+STRING};
}
sub columns { uni_length($_[0]->{+STRING}) }
sub break {
    my $self = shift;
    my ($len) = @_;
    $self->{+_LEN} = $len;
    $self->{+IDX} = 0;
    my $str = $self->{+STRING} . ""; # Force stringification
    my @parts;
    my @chars = split //, $str;
    while (@chars) {
        my $size = 0;
        my $part = '';
        until ($size == $len) {
            my $char = shift @chars;
            $char = '' unless defined $char;
            my $l = uni_length("$char");
            last unless $l;
            last if $char eq "\n";
            if ($size + $l > $len) {
                unshift @chars => $char;
                last;
            }
            $size += $l;
            $part .= $char;
        }
        # If we stopped just before a newline, grab it
        shift @chars if $size == $len && @chars && $chars[0] eq "\n";
        until ($size == $len) {
            $part .= ' ';
            $size += 1;
        }
        push @parts => $part;
    }
    $self->{+_PARTS} = \@parts;
}
sub next {
    my $self = shift;
    if (@_) {
        my ($len) = @_;
        $self->break($len) if !$self->{+_LEN} || $self->{+_LEN} != $len;
    }
    else {
        croak "String has not yet been broken"
            unless $self->{+_PARTS};
    }
    my $idx   = $self->{+IDX}++;
    my $parts = $self->{+_PARTS};
    return undef if $idx >= @$parts;
    return $parts->[$idx];
}
1;
__END__
HideShow 56 lines of Pod
=pod
=encoding UTF-8
=head1 NAME
Term::Table::LineBreak - Break up lines for use in tables.
=head1 DESCRIPTION
This is meant for internal use. This package takes long lines of text and
splits them so that they fit in table rows.
=head1 SYNOPSIS
    use Term::Table::LineBreak;
    my $lb = Term::Table::LineBreak->new(string => $STRING);
    $lb->break($SIZE);
    while (my $part = $lb->next) {
        ...
    }
=head1 SOURCE
The source code repository for Term-Table can be found at
F<http://github.com/exodist/Term-Table/>.
=head1 MAINTAINERS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=back
=head1 AUTHORS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=back
=head1 COPYRIGHT
Copyright 2016 Chad Granum E<lt>exodist@cpan.orgE<gt>.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
See F<http://dev.perl.org/licenses/>
=cut