7zip.inc

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<?php
class SevenZipStream {
    protected $stream;

    private function stripPath( $path ) {
        $prefix = 'mediawiki.compress.7z://';
        return substr( $path, strlen( $prefix ) );
    }

    function stream_open( $path, $mode, $options, &$opened_path ) {
        if ( $mode[0] == 'r' ) {
            $options = 'e -bd -so';
        } elseif ( $mode[0] == 'w' ) {
            $options = 'a -bd -si';
        } else {
            return false;
        }
        $arg = wfEscapeShellArg( $this->stripPath( $path ) );
        $command = "7za $options $arg";
        if ( !wfIsWindows() ) {
            // Suppress the stupid messages on stderr
            $command .= ' 2>/dev/null';
        }
        $this->stream = popen( $command, $mode[0] ); // popen() doesn't like two-letter modes
        return ( $this->stream !== false );
    }

    function url_stat( $path, $flags ) {
        return stat( $this->stripPath( $path ) );
    }

    // This is all so lame; there should be a default class we can extend

    function stream_close() {
        return fclose( $this->stream );
    }

    function stream_flush() {
        return fflush( $this->stream );
    }

    function stream_read( $count ) {
        return fread( $this->stream, $count );
    }

    function stream_write( $data ) {
        return fwrite( $this->stream, $data );
    }

    function stream_tell() {
        return ftell( $this->stream );
    }

    function stream_eof() {
        return feof( $this->stream );
    }

    function stream_seek( $offset, $whence ) {
        return fseek( $this->stream, $offset, $whence );
    }
}
stream_wrapper_register( 'mediawiki.compress.7z', 'SevenZipStream' );