games/battlestar/save.c

   1 /*      $NetBSD: save.c,v 1.11 2003/08/07 09:37:03 agc Exp $    */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 #if 0
  35 static char sccsid[] = "@(#)save.c      8.2 (Berkeley) 4/28/95";
  36 #else
  37 __RCSID("$NetBSD: save.c,v 1.11 2003/08/07 09:37:03 agc Exp $");
  38 #endif
  39 #endif                          /* not lint */
  40
  41 #include "extern.h"
  42
  43 void
  44 restore(const char *filename)
  45 {
  46         int     n;
  47         int     tmp;
  48         FILE   *fp;
  49
  50         if (filename == NULL)
  51                 exit(1); /* Error determining save file name.  */
  52         if ((fp = fopen(filename, "r")) == 0) {
  53                 err(1, "fopen %s", filename);
  54         }
  55         fread(&WEIGHT, sizeof WEIGHT, 1, fp);
  56         fread(&CUMBER, sizeof CUMBER, 1, fp);
  57         fread(&ourclock, sizeof ourclock, 1, fp);
  58         fread(&tmp, sizeof tmp, 1, fp);
  59         location = tmp ? dayfile : nightfile;
  60         for (n = 1; n <= NUMOFROOMS; n++) {
  61                 fread(location[n].link, sizeof location[n].link, 1, fp);
  62                 fread(location[n].objects, sizeof location[n].objects, 1, fp);
  63         }
  64         fread(inven, sizeof inven, 1, fp);
  65         fread(wear, sizeof wear, 1, fp);
  66         fread(injuries, sizeof injuries, 1, fp);
  67         fread(notes, sizeof notes, 1, fp);
  68         fread(&direction, sizeof direction, 1, fp);
  69         fread(&position, sizeof position, 1, fp);
  70         fread(&ourtime, sizeof ourtime, 1, fp);
  71         fread(&fuel, sizeof fuel, 1, fp);
  72         fread(&torps, sizeof torps, 1, fp);
  73         fread(&carrying, sizeof carrying, 1, fp);
  74         fread(&encumber, sizeof encumber, 1, fp);
  75         fread(&rythmn, sizeof rythmn, 1, fp);
  76         fread(&followfight, sizeof followfight, 1, fp);
  77         fread(&ate, sizeof ate, 1, fp);
  78         fread(&snooze, sizeof snooze, 1, fp);
  79         fread(&meetgirl, sizeof meetgirl, 1, fp);
  80         fread(&followgod, sizeof followgod, 1, fp);
  81         fread(&godready, sizeof godready, 1, fp);
  82         fread(&win, sizeof win, 1, fp);
  83         fread(&wintime, sizeof wintime, 1, fp);
  84         fread(&matchlight, sizeof matchlight, 1, fp);
  85         fread(&matchcount, sizeof matchcount, 1, fp);
  86         fread(&loved, sizeof loved, 1, fp);
  87         fread(&pleasure, sizeof pleasure, 1, fp);
  88         fread(&power, sizeof power, 1, fp);
  89         /* We must check the last read, to catch truncated save files */
  90         if (fread(&ego, sizeof ego, 1, fp) < 1)
  91                 errx(1, "save file %s too short", filename);
  92         fclose(fp);
  93 }
  94
  95 void
  96 save(const char *filename)
  97 {
  98         int     n;
  99         int     tmp;
 100         FILE   *fp;
 101
 102         if (filename == NULL)
 103                 return; /* Error determining save file name.  */
 104         if ((fp = fopen(filename, "w")) == NULL) {
 105                 warn("fopen %s", filename);
 106                 return;
 107         }
 108         printf("Saved in %s.\n", filename);
 109         fwrite(&WEIGHT, sizeof WEIGHT, 1, fp);
 110         fwrite(&CUMBER, sizeof CUMBER, 1, fp);
 111         fwrite(&ourclock, sizeof ourclock, 1, fp);
 112         tmp = location == dayfile;
 113         fwrite(&tmp, sizeof tmp, 1, fp);
 114         for (n = 1; n <= NUMOFROOMS; n++) {
 115                 fwrite(location[n].link, sizeof location[n].link, 1, fp);
 116                 fwrite(location[n].objects, sizeof location[n].objects, 1, fp);
 117         }
 118         fwrite(inven, sizeof inven, 1, fp);
 119         fwrite(wear, sizeof wear, 1, fp);
 120         fwrite(injuries, sizeof injuries, 1, fp);
 121         fwrite(notes, sizeof notes, 1, fp);
 122         fwrite(&direction, sizeof direction, 1, fp);
 123         fwrite(&position, sizeof position, 1, fp);
 124         fwrite(&ourtime, sizeof ourtime, 1, fp);
 125         fwrite(&fuel, sizeof fuel, 1, fp);
 126         fwrite(&torps, sizeof torps, 1, fp);
 127         fwrite(&carrying, sizeof carrying, 1, fp);
 128         fwrite(&encumber, sizeof encumber, 1, fp);
 129         fwrite(&rythmn, sizeof rythmn, 1, fp);
 130         fwrite(&followfight, sizeof followfight, 1, fp);
 131         fwrite(&ate, sizeof ate, 1, fp);
 132         fwrite(&snooze, sizeof snooze, 1, fp);
 133         fwrite(&meetgirl, sizeof meetgirl, 1, fp);
 134         fwrite(&followgod, sizeof followgod, 1, fp);
 135         fwrite(&godready, sizeof godready, 1, fp);
 136         fwrite(&win, sizeof win, 1, fp);
 137         fwrite(&wintime, sizeof wintime, 1, fp);
 138         fwrite(&matchlight, sizeof matchlight, 1, fp);
 139         fwrite(&matchcount, sizeof matchcount, 1, fp);
 140         fwrite(&loved, sizeof loved, 1, fp);
 141         fwrite(&pleasure, sizeof pleasure, 1, fp);
 142         fwrite(&power, sizeof power, 1, fp);
 143         fwrite(&ego, sizeof ego, 1, fp);
 144         fflush(fp);
 145         if (ferror(fp))
 146                 warn("fwrite %s", filename);
 147         fclose(fp);
 148 }
 149
 150 /*
 151  * Given a save file name (possibly from fgetln, so without terminating NUL),
 152  * determine the name of the file to be saved to by adding the HOME
 153  * directory if the name does not contain a slash.  Name will be allocated
 154  * with malloc(3).
 155  */
 156 char *
 157 save_file_name(const char *filename, size_t len)
 158 {
 159         char   *home;
 160         char   *newname;
 161         size_t  tmpl;
 162
 163         if (memchr(filename, '/', len)) {
 164                 newname = malloc(len + 1);
 165                 if (newname == NULL) {
 166                         warn(NULL);
 167                         return NULL;
 168                 }
 169                 memcpy(newname, filename, len);
 170                 newname[len] = 0;
 171         } else {
 172                 home = getenv("HOME");
 173                 if (home != NULL) {
 174                         tmpl = strlen(home);
 175                         newname = malloc(tmpl + len + 2);
 176                         if (newname == NULL) {
 177                                 warn(NULL);
 178                                 return NULL;
 179                         }
 180                         memcpy(newname, home, tmpl);
 181                         newname[tmpl] = '/';
 182                         memcpy(newname + tmpl + 1, filename, len);
 183                         newname[tmpl + len + 1] = 0;
 184                 } else {
 185                         newname = malloc(len + 1);
 186                         if (newname == NULL) {
 187                                 warn(NULL);
 188                                 return NULL;
 189                         }
 190                         memcpy(newname, filename, len);
 191                         newname[len] = 0;
 192                 }
 193         }
 194         return newname;
 195 }