package Catmandu::Fix::prepend;
use Catmandu::Sane;
use Catmandu::Util qw(:is :data);
use Moo;
has path => (is => 'ro', required => 1);
has key => (is => 'ro', required => 1);
has val => (is => 'ro', required => 1);
around BUILDARGS => sub {
my ($orig, $class, $path, $val) = @_;
my ($p, $key) = parse_data_path($path);
$orig->($class, path => $p, key => $key, val => $val);
};
sub fix {
my ($self, $data) = @_;
my $key = $self->key;
my $val = $self->val;
for my $match (grep ref, data_at($self->path, $data)) {
set_data($match, $key,
map { is_value($_) ? "$val$_" : $_ }
get_data($match, $key));
}
$data;
}
=head1 NAME
Catmandu::Fix::prepend - add a prefix to the value of a field
=head1 SYNOPSIS
# prepend the value of 'foo'. E.g. foo => 'bar'
prepend('foo', 'foo'); # foo => 'foobar'
=head1 SEE ALSO
L<Catmandu::Fix>
=cut
1;