3 * DBA-based CDB reader/writer
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
24 * Reader class which uses the DBA extension
26 class CdbReaderDBA
extends CdbReader
{
27 public function __construct( $fileName ) {
28 $this->handle
= dba_open( $fileName, 'r-', 'cdb' );
29 if ( !$this->handle
) {
30 throw new CdbException( 'Unable to open CDB file "' . $fileName . '"' );
34 public function close() {
35 if ( isset( $this->handle
) ) {
36 dba_close( $this->handle
);
38 unset( $this->handle
);
41 public function get( $key ) {
42 return dba_fetch( $key, $this->handle
);
47 * Writer class which uses the DBA extension
49 class CdbWriterDBA
extends CdbWriter
{
50 public function __construct( $fileName ) {
51 $this->realFileName
= $fileName;
52 $this->tmpFileName
= $fileName . '.tmp.' . mt_rand( 0, 0x7fffffff );
53 $this->handle
= dba_open( $this->tmpFileName
, 'n', 'cdb_make' );
54 if ( !$this->handle
) {
55 throw new CdbException( 'Unable to open CDB file for write "' . $fileName . '"' );
59 public function set( $key, $value ) {
60 return dba_insert( $key, $value, $this->handle
);
63 public function close() {
64 if ( isset( $this->handle
) ) {
65 dba_close( $this->handle
);
67 if ( $this->isWindows() ) {
68 unlink( $this->realFileName
);
70 if ( !rename( $this->tmpFileName
, $this->realFileName
) ) {
71 throw new CdbException( 'Unable to move the new CDB file into place.' );
73 unset( $this->handle
);