backgammon/common_source/save.c

   1 /*      $NetBSD: save.c,v 1.3 1995/03/21 15:05:52 cgd 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 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)save.c      8.1 (Berkeley) 5/31/93";
  39 #else
  40 static char rcsid[] = "$NetBSD: save.c,v 1.3 1995/03/21 15:05:52 cgd Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "back.h"
  45
  46 extern int      errno;
  47
  48 static char     confirm[] = "Are you sure you want to leave now?";
  49 static char     prompt[] = "Enter a file name:  ";
  50 static char     exist1[] = "The file '";
  51 static char     exist2[] =
  52         "' already exists.\nAre you sure you want to use this file?";
  53 static char     cantuse[] = "\nCan't use ";
  54 static char     saved[] = "This game has been saved on the file '";
  55 static char     type[] = "'.\nType \"backgammon ";
  56 static char     rec[] = "\" to recover your game.\n\n";
  57 static char     cantrec[] = "Can't recover file:  ";
  58
  59 save (n)
  60 register int    n;
  61
  62 {
  63         register int    fdesc;
  64         register char   *fs;
  65         char            fname[50];
  66
  67         if (n)  {
  68                 if (tflag)  {
  69                         curmove (20,0);
  70                         clend();
  71                 } else
  72                         writec ('\n');
  73                 writel (confirm);
  74                 if (! yorn(0))
  75                         return;
  76         }
  77         cflag = 1;
  78         for (;;)  {
  79                 writel (prompt);
  80                 fs = fname;
  81                 while ((*fs = readc()) != '\n')  {
  82                         if (*fs == tty.sg_erase)  {
  83                                 if (fs > fname)  {
  84                                         fs--;
  85                                         if (tflag)
  86                                                 curmove (curr,curc-1);
  87                                         else
  88                                                 writec (*fs);
  89                                 } else
  90                                         writec ('\007');
  91                                 continue;
  92                         }
  93                         writec (*fs++);
  94                 }
  95                 *fs = '\0';
  96                 if ((fdesc = open(fname,2)) == -1 && errno == 2)  {
  97                         if ((fdesc = creat (fname,0700)) != -1)
  98                         break;
  99                 }
 100                 if (fdesc != -1)  {
 101                         if (tflag)  {
 102                                 curmove (18,0);
 103                                 clend();
 104                         } else
 105                                 writec ('\n');
 106                         writel (exist1);
 107                         writel (fname);
 108                         writel (exist2);
 109                         cflag = 0;
 110                         close (fdesc);
 111                         if (yorn (0))  {
 112                                 unlink (fname);
 113                                 fdesc = creat (fname,0700);
 114                                 break;
 115                         } else  {
 116                                 cflag = 1;
 117                                 continue;
 118                         }
 119                 }
 120                 writel (cantuse);
 121                 writel (fname);
 122                 writel (".\n");
 123                 close (fdesc);
 124                 cflag = 1;
 125         }
 126         write (fdesc,board,sizeof board);
 127         write (fdesc,off,sizeof off);
 128         write (fdesc,in,sizeof in);
 129         write (fdesc,dice,sizeof dice);
 130         write (fdesc,&cturn,sizeof cturn);
 131         write (fdesc,&dlast,sizeof dlast);
 132         write (fdesc,&pnum,sizeof pnum);
 133         write (fdesc,&rscore,sizeof rscore);
 134         write (fdesc,&wscore,sizeof wscore);
 135         write (fdesc,&gvalue,sizeof gvalue);
 136         write (fdesc,&raflag,sizeof raflag);
 137         close (fdesc);
 138         if (tflag)
 139                 curmove (18,0);
 140         writel (saved);
 141         writel (fname);
 142         writel (type);
 143         writel (fname);
 144         writel (rec);
 145         if (tflag)
 146                 clend();
 147         getout ();
 148 }
 149 \f
 150 recover (s)
 151 char    *s;
 152
 153 {
 154         register int    i;
 155         int             fdesc;
 156
 157         if ((fdesc = open (s,0)) == -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 norec (s)
 175 register char   *s;
 176
 177 {
 178         register char   *c;
 179
 180         tflag = 0;
 181         writel (cantrec);
 182         c = s;
 183         while (*c != '\0')
 184                 writec (*c++);
 185         getout ();
 186 }