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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | */ |
| 18 | |
| 19 | namespace Cdb\Reader; |
| 20 | |
| 21 | use Cdb\Exception; |
| 22 | use Cdb\Reader; |
| 23 | |
| 24 | /** |
| 25 | * Reader class which uses the DBA extension (php-dba) |
| 26 | */ |
| 27 | class DBA extends Reader { |
| 28 | /** |
| 29 | * @var resource|false|null The file handle |
| 30 | */ |
| 31 | protected $handle; |
| 32 | |
| 33 | public function __construct( $fileName ) { |
| 34 | $this->handle = dba_open( $fileName, 'r-', 'cdb' ); |
| 35 | if ( !$this->handle ) { |
| 36 | throw new Exception( 'Unable to open CDB file "' . $fileName . '"' ); |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | public function close(): void { |
| 41 | if ( $this->handle ) { |
| 42 | dba_close( $this->handle ); |
| 43 | } |
| 44 | $this->handle = null; |
| 45 | } |
| 46 | |
| 47 | public function get( $key ) { |
| 48 | return dba_fetch( (string)$key, $this->handle ); |
| 49 | } |
| 50 | |
| 51 | public function exists( $key ): bool { |
| 52 | return dba_exists( (string)$key, $this->handle ); |
| 53 | } |
| 54 | |
| 55 | public function firstkey() { |
| 56 | return dba_firstkey( $this->handle ); |
| 57 | } |
| 58 | |
| 59 | public function nextkey() { |
| 60 | return dba_nextkey( $this->handle ); |
| 61 | } |
| 62 | } |