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<?php
/**
* Sends dump output via the p7zip compressor.
*
* Copyright © 2003, 2005, 2006 Brooke Vibber <bvibber@wikimedia.org>
* https://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
use MediaWiki\Shell\Shell;
/**
* @ingroup Dump
*/
class Dump7ZipOutput extends DumpPipeOutput {
/**
* @var int
*/
protected $compressionLevel;
/**
* @param string $file
* @param int $cmpLevel Compression level passed to 7za command's -mx
*/
public function __construct( $file, $cmpLevel = 4 ) {
$this->compressionLevel = $cmpLevel;
$command = $this->setup7zCommand( $file );
parent::__construct( $command );
$this->filename = $file;
}
/**
* @param string $file
* @return string
*/
private function setup7zCommand( $file ) {
$command = "7za a -bd -si -mx=";
$command .= Shell::escape( (string)$this->compressionLevel ) . ' ';
$command .= Shell::escape( $file );
// Suppress annoying useless crap from p7zip
// Unfortunately this could suppress real error messages too
$command .= ' >' . wfGetNull() . ' 2>&1';
return $command;
}
/**
* @inheritDoc
*/
public function closeAndRename( $newname, $open = false ) {
$newname = $this->checkRenameArgCount( $newname );
if ( $newname ) {
fclose( $this->handle );
proc_close( $this->procOpenResource );
$this->renameOrException( $newname );
if ( $open ) {
$command = $this->setup7zCommand( $this->filename );
$this->startCommand( $command );
}
}
}
}
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