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| 1 | <?php |
| 2 | /** |
| 3 | * Stream outputter to send data to a file via some filter program. |
| 4 | * Even if compression is available in a library, using a separate |
| 5 | * program can allow us to make use of a multi-processor system. |
| 6 | * |
| 7 | * Copyright © 2003, 2005, 2006 Brooke Vibber <bvibber@wikimedia.org> |
| 8 | * https://www.mediawiki.org/ |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License along |
| 21 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 22 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 23 | * http://www.gnu.org/copyleft/gpl.html |
| 24 | * |
| 25 | * @file |
| 26 | */ |
| 27 | |
| 28 | use MediaWiki\Shell\Shell; |
| 29 | |
| 30 | /** |
| 31 | * @ingroup Dump |
| 32 | */ |
| 33 | class DumpPipeOutput extends DumpFileOutput { |
| 34 | /** @var string */ |
| 35 | protected $command; |
| 36 | /** @var string|null */ |
| 37 | protected $filename; |
| 38 | /** @var resource|false */ |
| 39 | protected $procOpenResource = false; |
| 40 | |
| 41 | /** |
| 42 | * @param string $command |
| 43 | * @param string|null $file |
| 44 | */ |
| 45 | public function __construct( $command, $file = null ) { |
| 46 | if ( $file !== null ) { |
| 47 | $command .= " > " . Shell::escape( $file ); |
| 48 | } |
| 49 | |
| 50 | $this->startCommand( $command ); |
| 51 | $this->command = $command; |
| 52 | $this->filename = $file; |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * @param string $string |
| 57 | */ |
| 58 | public function writeCloseStream( $string ) { |
| 59 | parent::writeCloseStream( $string ); |
| 60 | if ( $this->procOpenResource ) { |
| 61 | proc_close( $this->procOpenResource ); |
| 62 | $this->procOpenResource = false; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * @param string $command |
| 68 | */ |
| 69 | public function startCommand( $command ) { |
| 70 | $spec = [ |
| 71 | 0 => [ "pipe", "r" ], |
| 72 | ]; |
| 73 | $pipes = []; |
| 74 | $this->procOpenResource = proc_open( $command, $spec, $pipes ); |
| 75 | $this->handle = $pipes[0]; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * @inheritDoc |
| 80 | */ |
| 81 | public function closeRenameAndReopen( $newname ) { |
| 82 | $this->closeAndRename( $newname, true ); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * @inheritDoc |
| 87 | */ |
| 88 | public function closeAndRename( $newname, $open = false ) { |
| 89 | $newname = $this->checkRenameArgCount( $newname ); |
| 90 | if ( $newname ) { |
| 91 | if ( $this->handle ) { |
| 92 | fclose( $this->handle ); |
| 93 | $this->handle = false; |
| 94 | } |
| 95 | if ( $this->procOpenResource ) { |
| 96 | proc_close( $this->procOpenResource ); |
| 97 | $this->procOpenResource = false; |
| 98 | } |
| 99 | $this->renameOrException( $newname ); |
| 100 | if ( $open ) { |
| 101 | $command = $this->command; |
| 102 | $command .= " > " . Shell::escape( $this->filename ); |
| 103 | $this->startCommand( $command ); |
| 104 | } |
| 105 | } |
| 106 | } |
| 107 | } |