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SevenZipStream.php
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SevenZipStream.php
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<?php
/**
* 7z stream wrapper
*
* Copyright © 2005 Brooke Vibber <bvibber@wikimedia.org>
* https://www.mediawiki.org/
*
* @license GPL-2.0-or-later
* @file
* @ingroup Maintenance
*/
namespace MediaWiki\Maintenance;
use MediaWiki\Shell\Shell;
/**
* Stream wrapper around 7za filter program.
* Required since we can't pass an open file resource to XMLReader->open()
* which is used for the text prefetch.
*
* @ingroup Maintenance
*/
class SevenZipStream {
/** @var resource|false */
protected $stream;
/** @var resource|null Must exists on stream wrapper class */
public $context;
public static function register() {
static $done = false;
if ( !$done ) {
$done = true;
stream_wrapper_register( 'mediawiki.compress.7z', self::class );
}
}
private function stripPath( string $path ): string {
$prefix = 'mediawiki.compress.7z://';
return substr( $path, strlen( $prefix ) );
}
public function stream_open( string $path, string $mode, int $options, ?string &$opened_path ): bool {
if ( $mode[0] == 'r' ) {
$options = 'e -bd -so';
} elseif ( $mode[0] == 'w' ) {
$options = 'a -bd -si';
} else {
return false;
}
$arg = Shell::escape( $this->stripPath( $path ) );
$command = "7za $options $arg";
if ( !wfIsWindows() ) {
// Suppress the stupid messages on stderr
$command .= ' 2>/dev/null';
}
// popen() doesn't like two-letter modes
$this->stream = popen( $command, $mode[0] );
return ( $this->stream !== false );
}
public function url_stat( string $path, int $flags ): array|false {
return stat( $this->stripPath( $path ) );
}
public function stream_close(): void {
fclose( $this->stream );
}
public function stream_flush(): bool {
return fflush( $this->stream );
}
public function stream_read( int $count ): string|false {
return fread( $this->stream, $count );
}
public function stream_write( string $data ): int {
return fwrite( $this->stream, $data );
}
public function stream_tell(): int {
return ftell( $this->stream );
}
public function stream_eof(): bool {
return feof( $this->stream );
}
public function stream_seek( int $offset, int $whence ): bool {
return fseek( $this->stream, $offset, $whence ) === 0;
}
}
/** @deprecated class alias since 1.43 */
class_alias( SevenZipStream::class, 'SevenZipStream' );

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text/x-php
Expires
Tue, Aug 18, 21:55 (1 d, 2 h)
Storage Engine
local-disk
Storage Format
Raw Data
Storage Handle
a1/5a/6223135751ef24928d85fc79bee4
Default Alt Text
SevenZipStream.php (2 KB)

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