battlestar/save.c

   1 /*      $NetBSD: save.c,v 1.10 2000/01/09 17:17:20 jsm 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 #if 0
  39 static char sccsid[] = "@(#)save.c      8.2 (Berkeley) 4/28/95";
  40 #else
  41 __RCSID("$NetBSD: save.c,v 1.10 2000/01/09 17:17:20 jsm Exp $");
  42 #endif
  43 #endif                          /* not lint */
  44
  45 #include "extern.h"
  46
  47 void
  48 restore(filename)
  49         const char *filename;
  50 {
  51         int     n;
  52         int     tmp;
  53         FILE   *fp;
  54
  55         if (filename == NULL)
  56                 exit(1); /* Error determining save file name.  */
  57         if ((fp = fopen(filename, "r")) == 0) {
  58                 err(1, "fopen %s", filename);
  59         }
  60         fread(&WEIGHT, sizeof WEIGHT, 1, fp);
  61         fread(&CUMBER, sizeof CUMBER, 1, fp);
  62         fread(&ourclock, sizeof ourclock, 1, fp);
  63         fread(&tmp, sizeof tmp, 1, fp);
  64         location = tmp ? dayfile : nightfile;
  65         for (n = 1; n <= NUMOFROOMS; n++) {
  66                 fread(location[n].link, sizeof location[n].link, 1, fp);
  67                 fread(location[n].objects, sizeof location[n].objects, 1, fp);
  68         }
  69         fread(inven, sizeof inven, 1, fp);
  70         fread(wear, sizeof wear, 1, fp);
  71         fread(injuries, sizeof injuries, 1, fp);
  72         fread(notes, sizeof notes, 1, fp);
  73         fread(&direction, sizeof direction, 1, fp);
  74         fread(&position, sizeof position, 1, fp);
  75         fread(&ourtime, sizeof ourtime, 1, fp);
  76         fread(&fuel, sizeof fuel, 1, fp);
  77         fread(&torps, sizeof torps, 1, fp);
  78         fread(&carrying, sizeof carrying, 1, fp);
  79         fread(&encumber, sizeof encumber, 1, fp);
  80         fread(&rythmn, sizeof rythmn, 1, fp);
  81         fread(&followfight, sizeof followfight, 1, fp);
  82         fread(&ate, sizeof ate, 1, fp);
  83         fread(&snooze, sizeof snooze, 1, fp);
  84         fread(&meetgirl, sizeof meetgirl, 1, fp);
  85         fread(&followgod, sizeof followgod, 1, fp);
  86         fread(&godready, sizeof godready, 1, fp);
  87         fread(&win, sizeof win, 1, fp);
  88         fread(&wintime, sizeof wintime, 1, fp);
  89         fread(&matchlight, sizeof matchlight, 1, fp);
  90         fread(&matchcount, sizeof matchcount, 1, fp);
  91         fread(&loved, sizeof loved, 1, fp);
  92         fread(&pleasure, sizeof pleasure, 1, fp);
  93         fread(&power, sizeof power, 1, fp);
  94         /* We must check the last read, to catch truncated save files */
  95         if (fread(&ego, sizeof ego, 1, fp) < 1)
  96                 errx(1, "save file %s too short", filename);
  97         fclose(fp);
  98 }
  99
 100 void
 101 save(filename)
 102         const char *filename;
 103 {
 104         int     n;
 105         int     tmp;
 106         FILE   *fp;
 107
 108         if (filename == NULL)
 109                 return; /* Error determining save file name.  */
 110         if ((fp = fopen(filename, "w")) == NULL) {
 111                 warn("fopen %s", filename);
 112                 return;
 113         }
 114         printf("Saved in %s.\n", filename);
 115         fwrite(&WEIGHT, sizeof WEIGHT, 1, fp);
 116         fwrite(&CUMBER, sizeof CUMBER, 1, fp);
 117         fwrite(&ourclock, sizeof ourclock, 1, fp);
 118         tmp = location == dayfile;
 119         fwrite(&tmp, sizeof tmp, 1, fp);
 120         for (n = 1; n <= NUMOFROOMS; n++) {
 121                 fwrite(location[n].link, sizeof location[n].link, 1, fp);
 122                 fwrite(location[n].objects, sizeof location[n].objects, 1, fp);
 123         }
 124         fwrite(inven, sizeof inven, 1, fp);
 125         fwrite(wear, sizeof wear, 1, fp);
 126         fwrite(injuries, sizeof injuries, 1, fp);
 127         fwrite(notes, sizeof notes, 1, fp);
 128         fwrite(&direction, sizeof direction, 1, fp);
 129         fwrite(&position, sizeof position, 1, fp);
 130         fwrite(&ourtime, sizeof ourtime, 1, fp);
 131         fwrite(&fuel, sizeof fuel, 1, fp);
 132         fwrite(&torps, sizeof torps, 1, fp);
 133         fwrite(&carrying, sizeof carrying, 1, fp);
 134         fwrite(&encumber, sizeof encumber, 1, fp);
 135         fwrite(&rythmn, sizeof rythmn, 1, fp);
 136         fwrite(&followfight, sizeof followfight, 1, fp);
 137         fwrite(&ate, sizeof ate, 1, fp);
 138         fwrite(&snooze, sizeof snooze, 1, fp);
 139         fwrite(&meetgirl, sizeof meetgirl, 1, fp);
 140         fwrite(&followgod, sizeof followgod, 1, fp);
 141         fwrite(&godready, sizeof godready, 1, fp);
 142         fwrite(&win, sizeof win, 1, fp);
 143         fwrite(&wintime, sizeof wintime, 1, fp);
 144         fwrite(&matchlight, sizeof matchlight, 1, fp);
 145         fwrite(&matchcount, sizeof matchcount, 1, fp);
 146         fwrite(&loved, sizeof loved, 1, fp);
 147         fwrite(&pleasure, sizeof pleasure, 1, fp);
 148         fwrite(&power, sizeof power, 1, fp);
 149         fwrite(&ego, sizeof ego, 1, fp);
 150         fflush(fp);
 151         if (ferror(fp))
 152                 warn("fwrite %s", filename);
 153         fclose(fp);
 154 }
 155
 156 /*
 157  * Given a save file name (possibly from fgetln, so without terminating NUL),
 158  * determine the name of the file to be saved to by adding the HOME
 159  * directory if the name does not contain a slash.  Name will be allocated
 160  * with malloc(3).
 161  */
 162 char *
 163 save_file_name(filename, len)
 164         const char *filename;
 165         size_t len;
 166 {
 167         char   *home;
 168         char   *newname;
 169         size_t  tmpl;
 170
 171         if (memchr(filename, '/', len)) {
 172                 newname = malloc(len + 1);
 173                 if (newname == NULL) {
 174                         warn(NULL);
 175                         return NULL;
 176                 }
 177                 memcpy(newname, filename, len);
 178                 newname[len] = 0;
 179         } else {
 180                 home = getenv("HOME");
 181                 if (home != NULL) {
 182                         tmpl = strlen(home);
 183                         newname = malloc(tmpl + len + 2);
 184                         if (newname == NULL) {
 185                                 warn(NULL);
 186                                 return NULL;
 187                         }
 188                         memcpy(newname, home, tmpl);
 189                         newname[tmpl] = '/';
 190                         memcpy(newname + tmpl + 1, filename, len);
 191                         newname[tmpl + len + 1] = 0;
 192                 } else {
 193                         newname = malloc(len + 1);
 194                         if (newname == NULL) {
 195                                 warn(NULL);
 196                                 return NULL;
 197                         }
 198                         memcpy(newname, filename, len);
 199                         newname[len] = 0;
 200                 }
 201         }
 202         return newname;
 203 }