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package Catmandu::Fix::sort_field;
use Catmandu::Sane;
our $VERSION = '1.2024';
use List::SomeUtils qw(uniq);
use Catmandu::Util::Path qw(as_path);
use Moo;
use namespace::clean;
use Catmandu::Fix::Has;
with 'Catmandu::Fix::Builder';
has path => (fix_arg => 1);
has uniq => (fix_opt => 1);
has reverse => (fix_opt => 1);
has numeric => (fix_opt => 1);
has undef_position => (fix_opt => 1, default => sub {'last'});
sub _build_fixer {
my ($self) = @_;
my $uniq = $self->uniq;
my $reverse = $self->reverse;
my $numeric = $self->numeric;
my $undef_position = $self->undef_position;
as_path($self->path)->updater(
if_array_ref => sub {
my $val = $_[0];
#filter out undef
my $undefs = [grep {!defined($_)} @$val];
$val = [grep {defined($_)} @$val];
#uniq
if ($uniq) {
$val = [uniq(@$val)];
}
#sort
if ($reverse && $numeric) {
$val = [sort {$b <=> $a} @$val];
}
elsif ($numeric) {
$val = [sort {$a <=> $b} @$val];
}
elsif ($reverse) {
$val = [sort {$b cmp $a} @$val];
}
else {
$val = [sort {$a cmp $b} @$val];
}
#insert undef at the end
if ($undef_position eq 'first') {
if ($uniq) {
unshift @$val, undef if @$undefs;
}
else {
unshift @$val, @$undefs;
}
}
elsif ($undef_position eq 'last') {
if ($uniq) {
push @$val, undef if @$undefs;
}
else {
push @$val, @$undefs;
}
}
$val;
}
);
}
1;
__END__
=pod
=head1 NAME
Catmandu::Fix::sort_field - sort the values of an array
=head1 SYNOPSIS
# e.g. tags => ["foo", "bar","bar"]
sort_field(tags) # tags => ["bar","bar","foo"]
sort_field(tags, uniq: 1) # tags => ["bar","foo"]
sort_field(tags, uniq: 1, reverse: 1) # tags => ["foo","bar"]
# e.g. nums => [ 100, 1 , 10]
sort_field(nums, numeric: 1) # nums => [ 1, 10, 100]
#push undefined values to the end of the list (default)
#beware: reverse has no effect on this!
sort_field(tags,undef_position: last)
#push undefined values to the beginning of the list
#beware: reverse has no effect on this!
sort_field(tags,undef_position: first)
#remove undefined values from the list
sort_field(tags,undef_position: delete)
=head1 SEE ALSO
L<Catmandu::Fix>
=cut
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