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76 lines
1.9 KiB
Perl
76 lines
1.9 KiB
Perl
# <@LICENSE>
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to you under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# </@LICENSE>
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package Mail::SpamAssassin::BayesStore::SDBM;
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use strict;
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use warnings;
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# use bytes;
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use re 'taint';
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use Fcntl;
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use Mail::SpamAssassin::BayesStore::DBM;
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use Mail::SpamAssassin::Logger;
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# our @DBNAMES; # <---- unused!
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our @ISA = qw( Mail::SpamAssassin::BayesStore::DBM );
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sub HAS_DBM_MODULE {
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my ($self) = @_;
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if (exists($self->{has_dbm_module})) {
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return $self->{has_dbm_module};
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}
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$self->{has_dbm_module} = eval { require SDBM_File; };
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}
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sub DBM_MODULE {
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return "SDBM_File";
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}
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# Possible file extensions used by the kinds of database files SDBM_File
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# might create. We need these so we can create a new file and rename
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# it into place.
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sub DB_EXTENSIONS {
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return ('.pag', '.dir');
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}
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sub _unlink_file {
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my ($self, $filename) = @_;
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for my $ext ($self->DB_EXTENSIONS) {
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unlink $filename . $ext;
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}
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}
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sub _rename_file {
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my ($self, $sourcefilename, $targetfilename) = @_;
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for my $ext ($self->DB_EXTENSIONS) {
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return 0 unless (rename($sourcefilename . $ext, $targetfilename . $ext));
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}
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return 1;
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}
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# this is called directly from sa-learn(1).
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sub perform_upgrade {
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return 1;
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}
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1;
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