+ my $error;
+ if ($to_flavour =~ m/marcstd/) {
+ my $marc_record_obj;
+ if ($marc =~ /^MARC::Record/) { # it's already a MARC::Record object
+ $marc_record_obj = $marc;
+ } else { # it's not a MARC::Record object, make it one
+ eval { $marc_record_obj = MARC::Record->new_from_usmarc($marc) }; # handle exceptions
+
+# conversion to MARC::Record object failed, populate $error
+ if ($@) { $error .="\nCreation of MARC::Record object failed: ".$MARC::File::ERROR };
+ }
+ unless ($error) {
+ my @privatefields;
+ foreach my $field ($marc_record_obj->fields()) {
+ if ($field->tag() =~ m/9/ && ($field->tag() != '490' || C4::Context->preference("marcflavour") eq 'UNIMARC')) {
+ push @privatefields, $field;
+ } elsif (! ($field->is_control_field())) {
+ $field->delete_subfield(code => '9') if ($field->subfield('9'));
+ }
+ }
+ $marc_record_obj->delete_field($_) for @privatefields;
+ $marc = $marc_record_obj->as_usmarc();
+ }
+ } else {
+ $error = "Feature not yet implemented\n";
+ }