games/backgammon/common_source/save.c

   1 /*-
   2  * Copyright (c) 1980, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)save.c   8.1 (Berkeley) 5/31/93
  30  * $FreeBSD: src/games/backgammon/common_source/save.c,v 1.8 1999/11/30 03:48:27 billf Exp $
  31  * $DragonFly: src/games/backgammon/common_source/save.c,v 1.4 2006/08/08 16:36:11 pavalos Exp $
  32  */
  33
  34 #include <fcntl.h>
  35 #include <errno.h>
  36 #include "back.h"
  37
  38 static void     norec(const char *);
  39
  40 static const char       confirm[] = "Are you sure you want to leave now?";
  41 static const char       prompt[] = "Enter a file name:  ";
  42 static const char       exist1[] = "The file '";
  43 static const char       exist2[] =
  44         "' already exists.\nAre you sure you want to use this file?";
  45 static const char       cantuse[] = "\nCan't use ";
  46 static const char       saved[] = "This game has been saved on the file '";
  47 static const char       type[] = "'.\nType \"backgammon ";
  48 static const char       rec[] = "\" to recover your game.\n\n";
  49 static const char       cantrec[] = "Can't recover file:  ";
  50
  51 void
  52 save(int n)
  53 {
  54         int fdesc;
  55         char *fs;
  56         char fname[50];
  57
  58         if (n) {
  59                 if (tflag) {
  60                         curmove(20, 0);
  61                         clend();
  62                 } else
  63                         writec('\n');
  64                 writel(confirm);
  65                 if (!yorn(0))
  66                         return;
  67         }
  68         cflag = 1;
  69         for (;;) {
  70                 writel(prompt);
  71                 fs = fname;
  72                 while ((*fs = readc()) != '\n') {
  73                         if (*fs == tty.c_cc[VERASE]) {
  74                                 if (fs > fname) {
  75                                         fs--;
  76                                         if (tflag)
  77                                                 curmove(curr, curc - 1);
  78                                         else
  79                                                 writec(*fs);
  80                                 } else
  81                                         writec('\007');
  82                                 continue;
  83                         }
  84                         writec(*fs++);
  85                 }
  86                 *fs = '\0';
  87                 if ((fdesc = open(fname, O_RDWR)) == -1 && errno == ENOENT) {
  88                         if ((fdesc = creat(fname, 0600)) != -1)
  89                                 break;
  90                 }
  91                 if (fdesc != -1) {
  92                         if (tflag) {
  93                                 curmove(18, 0);
  94                                 clend();
  95                         } else
  96                                 writec('\n');
  97                         writel(exist1);
  98                         writel(fname);
  99                         writel(exist2);
 100                         cflag = 0;
 101                         close(fdesc);
 102                         if (yorn(0)) {
 103                                 unlink(fname);
 104                                 fdesc = creat(fname, 0700);
 105                                 break;
 106                         } else {
 107                                 cflag = 1;
 108                                 continue;
 109                         }
 110                 }
 111                 writel(cantuse);
 112                 writel(fname);
 113                 writel(".\n");
 114                 cflag = 1;
 115         }
 116         write(fdesc, board, sizeof board);
 117         write(fdesc, off, sizeof off);
 118         write(fdesc, in, sizeof in);
 119         write(fdesc, dice, sizeof dice);
 120         write(fdesc, &cturn, sizeof cturn);
 121         write(fdesc, &dlast, sizeof dlast);
 122         write(fdesc, &pnum, sizeof pnum);
 123         write(fdesc, &rscore, sizeof rscore);
 124         write(fdesc, &wscore, sizeof wscore);
 125         write(fdesc, &gvalue, sizeof gvalue);
 126         write(fdesc, &raflag, sizeof raflag);
 127         close(fdesc);
 128         if (tflag)
 129                 curmove(18, 0);
 130         writel(saved);
 131         writel(fname);
 132         writel(type);
 133         writel(fname);
 134         writel(rec);
 135         if (tflag)
 136                 clend();
 137         getout();
 138 }
 139
 140 void
 141 recover(const char *s)
 142 {
 143         int fdesc;
 144
 145         if ((fdesc = open(s, O_RDONLY)) == -1)
 146                 norec(s);
 147         read(fdesc, board, sizeof board);
 148         read(fdesc, off, sizeof off);
 149         read(fdesc, in, sizeof in);
 150         read(fdesc, dice, sizeof dice);
 151         read(fdesc, &cturn, sizeof cturn);
 152         read(fdesc, &dlast, sizeof dlast);
 153         read(fdesc, &pnum, sizeof pnum);
 154         read(fdesc, &rscore, sizeof rscore);
 155         read(fdesc, &wscore, sizeof wscore);
 156         read(fdesc, &gvalue, sizeof gvalue);
 157         read(fdesc, &raflag, sizeof raflag);
 158         close(fdesc);
 159         rflag = 1;
 160 }
 161
 162 static void
 163 norec(const char *s)
 164 {
 165         const char *c;
 166
 167         tflag = 0;
 168         writel(cantrec);
 169         c = s;
 170         while (*c != '\0')
 171                 writec(*c++);
 172         getout();
 173 }