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package Catmandu::Fix::perlcode;
use Catmandu::Sane;
our $VERSION = '1.2024';
use Moo;
use namespace::clean;
use Catmandu::Fix::Has;
with 'Catmandu::Fix::Base';
our %CACHE;
has file => (fix_arg => 1);
has code => (
is => 'lazy',
builder => sub {
my $file = $_[0]->file;
$CACHE{$file} //= do $_[0]->file;
}
);
sub emit {
my ($self, $fixer) = @_;
my $code = $fixer->capture($self->code);
my $var = $fixer->var;
my $reject = $fixer->capture({});
"if (${code}->(${var},${reject}) == ${reject}) {"
. $fixer->emit_reject . "}";
}
1;
__END__
=pod
=head1 NAME
Catmandu::Fix::perlcode - execute Perl code as fix function
=head1 DESCRIPTION
Use this fix in the L<Catmandu> fix language to make use of a Perl script:
perlcode(myscript.pl)
The script (here C<myscript.pl>) must return a code reference:
sub {
my $data = shift;
$data->{testing} = 1 ; # modify the item
return $data; # and return the data
}
When not using the fix language this
my $fixer = Catmandu::Fix->new( fixes => [ do 'myscript.pl' ] );
$fixer->fix( $item );
is roughly equivalent to:
my $code = do 'myscript.pl';
$item = $code->( $item )
All scripts are cached based on their filename, so using this fix multiple
times will only load each given script once.
The code reference gets passed a second value to reject selected items such as
possible with see L<Catmandu::Fix::reject>:
sub {
my ($data, $reject) = @_;
if ($data->{my_field} eq 'OK') {
return $data; # return the data and continue processing
}
else {
return $reject; # return the reject flag to ignore this record
}
}
=head1 SEE ALSO
L<Catmandu::Fix::code>, L<Catmandu::Fix::cmd>
=cut
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