7zip.inc

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<?php
class SevenZipStream {
        var $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' );