* Copyright (c) 1980 Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
static char sccsid
[] = "@(#)dumpgame.c 4.6 (Berkeley) 6/1/90";
/*** THIS CONSTANT MUST CHANGE AS THE DATA SPACES CHANGE ***/
struct dump Dump_template
[] =
(char *)&Ship
, sizeof (Ship
),
(char *)&Now
, sizeof (Now
),
(char *)&Param
, sizeof (Param
),
(char *)&Etc
, sizeof (Etc
),
(char *)&Game
, sizeof (Game
),
(char *)Sect
, sizeof (Sect
),
(char *)Quad
, sizeof (Quad
),
(char *)&Move
, sizeof (Move
),
(char *)Event
, sizeof (Event
),
** This routine dumps the game onto the file "trek.dump". The
** first two bytes of the file are a version number, which
** reflects whether this image may be used. Obviously, it must
** change as the size, content, or order of the data structures
if ((fd
= creat("trek.dump", 0644)) < 0)
return (printf("cannot dump\n"));
write(fd
, &version
, sizeof version
);
/* output the main data areas */
for (d
= Dump_template
; d
->area
; d
++)
write(fd
, &d
->area
, sizeof d
->area
);
** The game is restored from the file "trek.dump". In order for
** this to succeed, the file must exist and be readable, must
** have the correct version number, and must have all the appro-
** Return value is zero for success, one for failure.
if ((fd
= open("trek.dump", 0)) < 0 ||
read(fd
, &version
, sizeof version
) != sizeof version
||
printf("cannot restart\n");
** This is the business end of restartgame(). It reads in the
** Returns zero for success, one for failure.
for (d
= Dump_template
; d
->area
; d
++)
if (read(fd
, &junk
, sizeof junk
) != (sizeof junk
))
if ((char *)junk
!= d
->area
)
if (read(fd
, d
->area
, i
) != i
)
/* make quite certain we are at EOF */
return (read(fd
, &junk
, 1));