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<?php |
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/** |
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* 7z stream wrapper |
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* |
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* Copyright © 2005 Brion Vibber <[email protected]> |
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* https://www.mediawiki.org/ |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License along |
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* with this program; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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* http://www.gnu.org/copyleft/gpl.html |
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* |
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* @file |
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* @ingroup Maintenance |
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*/ |
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/** |
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* Stream wrapper around 7za filter program. |
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* Required since we can't pass an open file resource to XMLReader->open() |
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* which is used for the text prefetch. |
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* |
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* @ingroup Maintenance |
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*/ |
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class SevenZipStream { |
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protected $stream; |
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private function stripPath( $path ) { |
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$prefix = 'mediawiki.compress.7z://'; |
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return substr( $path, strlen( $prefix ) ); |
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} |
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function stream_open( $path, $mode, $options, &$opened_path ) { |
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if ( $mode[0] == 'r' ) { |
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$options = 'e -bd -so'; |
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} elseif ( $mode[0] == 'w' ) { |
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$options = 'a -bd -si'; |
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} else { |
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return false; |
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} |
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$arg = wfEscapeShellArg( $this->stripPath( $path ) ); |
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$command = "7za $options $arg"; |
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if ( !wfIsWindows() ) { |
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// Suppress the stupid messages on stderr |
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$command .= ' 2>/dev/null'; |
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} |
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$this->stream = popen( $command, $mode[0] ); // popen() doesn't like two-letter modes |
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return ( $this->stream !== false ); |
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} |
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function url_stat( $path, $flags ) { |
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return stat( $this->stripPath( $path ) ); |
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} |
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// This is all so lame; there should be a default class we can extend |
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function stream_close() { |
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return fclose( $this->stream ); |
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} |
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function stream_flush() { |
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return fflush( $this->stream ); |
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} |
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function stream_read( $count ) { |
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return fread( $this->stream, $count ); |
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} |
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function stream_write( $data ) { |
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return fwrite( $this->stream, $data ); |
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} |
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function stream_tell() { |
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return ftell( $this->stream ); |
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} |
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function stream_eof() { |
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return feof( $this->stream ); |
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} |
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function stream_seek( $offset, $whence ) { |
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return fseek( $this->stream, $offset, $whence ); |
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} |
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} |
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stream_wrapper_register( 'mediawiki.compress.7z', 'SevenZipStream' ); |
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wikimedia /
mediawiki
