backgammon/common_source/save.c

   1 /*      $NetBSD: save.c,v 1.9 1999/07/28 02:07:39 hubertf Exp $ */
   2
   3 /*
   4  * Copyright (c) 1980, 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      8.1 (Berkeley) 5/31/93";
  40 #else
  41 __RCSID("$NetBSD: save.c,v 1.9 1999/07/28 02:07:39 hubertf Exp $");
  42 #endif
  43 #endif /* not lint */
  44
  45 #include <errno.h>
  46
  47 #include "back.h"
  48
  49 static const char confirm[] = "Are you sure you want to leave now?";
  50 static const char prompt[] = "Enter a file name:  ";
  51 static const char exist1[] = "The file '";
  52 static const char exist2[] =
  53 "' already exists.\nAre you sure you want to use this file?";
  54 static const char cantuse[] = "\nCan't use ";
  55 static const char saved[] = "This game has been saved on the file '";
  56 static const char type[] = "'.\nType \"backgammon ";
  57 static const char rec[] = "\" to recover your game.\n\n";
  58 static const char cantrec[] = "Can't recover file:  ";
  59
  60 void
  61 save(n)
  62         int     n;
  63 {
  64         int     fdesc;
  65         char   *fs;
  66         char    fname[50];
  67
  68         if (n) {
  69                 if (tflag) {
  70                         curmove(20, 0);
  71                         clend();
  72                 } else
  73                         writec('\n');
  74                 writel(confirm);
  75                 if (!yorn(0))
  76                         return;
  77         }
  78         cflag = 1;
  79         for (;;) {
  80                 writel(prompt);
  81                 fs = fname;
  82                 while ((*fs = readc()) != '\n') {
  83                         if (*fs == old.c_cc[VERASE]) {
  84                                 if (fs > fname) {
  85                                         fs--;
  86                                         if (tflag)
  87                                                 curmove(curr, curc - 1);
  88                                         else
  89                                                 writec(*fs);
  90                                 } else
  91                                         writec('\007');
  92                                 continue;
  93                         }
  94                         writec(*fs++);
  95                 }
  96                 *fs = '\0';
  97                 if ((fdesc = open(fname, O_RDWR)) == -1 && errno == ENOENT) {
  98                         if ((fdesc = creat(fname, 0600)) != -1)
  99                                 break;
 100                 }
 101                 if (fdesc != -1) {
 102                         if (tflag) {
 103                                 curmove(18, 0);
 104                                 clend();
 105                         } else
 106                                 writec('\n');
 107                         writel(exist1);
 108                         writel(fname);
 109                         writel(exist2);
 110                         cflag = 0;
 111                         close(fdesc);
 112                         if (yorn(0)) {
 113                                 unlink(fname);
 114                                 fdesc = creat(fname, 0600);
 115                                 break;
 116                         } else {
 117                                 cflag = 1;
 118                                 continue;
 119                         }
 120                 }
 121                 writel(cantuse);
 122                 writel(fname);
 123                 writel(".\n");
 124                 close(fdesc);
 125                 cflag = 1;
 126         }
 127         write(fdesc, board, sizeof board);
 128         write(fdesc, off, sizeof off);
 129         write(fdesc, in, sizeof in);
 130         write(fdesc, dice, sizeof dice);
 131         write(fdesc, &cturn, sizeof cturn);
 132         write(fdesc, &dlast, sizeof dlast);
 133         write(fdesc, &pnum, sizeof pnum);
 134         write(fdesc, &rscore, sizeof rscore);
 135         write(fdesc, &wscore, sizeof wscore);
 136         write(fdesc, &gvalue, sizeof gvalue);
 137         write(fdesc, &raflag, sizeof raflag);
 138         close(fdesc);
 139         if (tflag)
 140                 curmove(18, 0);
 141         writel(saved);
 142         writel(fname);
 143         writel(type);
 144         writel(fname);
 145         writel(rec);
 146         if (tflag)
 147                 clend();
 148         getout(0);
 149 }
 150
 151 void
 152 recover(s)
 153         const char   *s;
 154 {
 155         int     fdesc;
 156
 157         if ((fdesc = open(s, O_RDONLY)) == -1)
 158                 norec(s);
 159         read(fdesc, board, sizeof board);
 160         read(fdesc, off, sizeof off);
 161         read(fdesc, in, sizeof in);
 162         read(fdesc, dice, sizeof dice);
 163         read(fdesc, &cturn, sizeof cturn);
 164         read(fdesc, &dlast, sizeof dlast);
 165         read(fdesc, &pnum, sizeof pnum);
 166         read(fdesc, &rscore, sizeof rscore);
 167         read(fdesc, &wscore, sizeof wscore);
 168         read(fdesc, &gvalue, sizeof gvalue);
 169         read(fdesc, &raflag, sizeof raflag);
 170         close(fdesc);
 171         rflag = 1;
 172 }
 173
 174 void
 175 norec(s)
 176         const char   *s;
 177 {
 178         const char   *c;
 179
 180         tflag = 0;
 181         writel(cantrec);
 182         c = s;
 183         while (*c != '\0')
 184                 writec(*c++);
 185         getout(0);
 186 }