backgammon/common_source/save.c

   1 /*
   2  * Copyright (c) 1980 Regents of the University of California.
   3  * 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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifndef lint
  35 /*static char sccsid[] = "from: @(#)save.c      5.4 (Berkeley) 6/1/90";*/
  36 static char rcsid[] = "$Id: save.c,v 1.2 1993/08/01 18:56:38 mycroft Exp $";
  37 #endif /* not lint */
  38
  39 #include "back.h"
  40
  41 extern int      errno;
  42
  43 static char     confirm[] = "Are you sure you want to leave now?";
  44 static char     prompt[] = "Enter a file name:  ";
  45 static char     exist1[] = "The file '";
  46 static char     exist2[] =
  47         "' already exists.\nAre you sure you want to use this file?";
  48 static char     cantuse[] = "\nCan't use ";
  49 static char     saved[] = "This game has been saved on the file '";
  50 static char     type[] = "'.\nType \"backgammon ";
  51 static char     rec[] = "\" to recover your game.\n\n";
  52 static char     cantrec[] = "Can't recover file:  ";
  53
  54 save (n)
  55 register int    n;
  56
  57 {
  58         register int    fdesc;
  59         register char   *fs;
  60         char            fname[50];
  61
  62         if (n)  {
  63                 if (tflag)  {
  64                         curmove (20,0);
  65                         clend();
  66                 } else
  67                         writec ('\n');
  68                 writel (confirm);
  69                 if (! yorn(0))
  70                         return;
  71         }
  72         cflag = 1;
  73         for (;;)  {
  74                 writel (prompt);
  75                 fs = fname;
  76                 while ((*fs = readc()) != '\n')  {
  77                         if (*fs == tty.sg_erase)  {
  78                                 if (fs > fname)  {
  79                                         fs--;
  80                                         if (tflag)
  81                                                 curmove (curr,curc-1);
  82                                         else
  83                                                 writec (*fs);
  84                                 } else
  85                                         writec ('\007');
  86                                 continue;
  87                         }
  88                         writec (*fs++);
  89                 }
  90                 *fs = '\0';
  91                 if ((fdesc = open(fname,2)) == -1 && errno == 2)  {
  92                         if ((fdesc = creat (fname,0700)) != -1)
  93                         break;
  94                 }
  95                 if (fdesc != -1)  {
  96                         if (tflag)  {
  97                                 curmove (18,0);
  98                                 clend();
  99                         } else
 100                                 writec ('\n');
 101                         writel (exist1);
 102                         writel (fname);
 103                         writel (exist2);
 104                         cflag = 0;
 105                         close (fdesc);
 106                         if (yorn (0))  {
 107                                 unlink (fname);
 108                                 fdesc = creat (fname,0700);
 109                                 break;
 110                         } else  {
 111                                 cflag = 1;
 112                                 continue;
 113                         }
 114                 }
 115                 writel (cantuse);
 116                 writel (fname);
 117                 writel (".\n");
 118                 close (fdesc);
 119                 cflag = 1;
 120         }
 121         write (fdesc,board,sizeof board);
 122         write (fdesc,off,sizeof off);
 123         write (fdesc,in,sizeof in);
 124         write (fdesc,dice,sizeof dice);
 125         write (fdesc,&cturn,sizeof cturn);
 126         write (fdesc,&dlast,sizeof dlast);
 127         write (fdesc,&pnum,sizeof pnum);
 128         write (fdesc,&rscore,sizeof rscore);
 129         write (fdesc,&wscore,sizeof wscore);
 130         write (fdesc,&gvalue,sizeof gvalue);
 131         write (fdesc,&raflag,sizeof raflag);
 132         close (fdesc);
 133         if (tflag)
 134                 curmove (18,0);
 135         writel (saved);
 136         writel (fname);
 137         writel (type);
 138         writel (fname);
 139         writel (rec);
 140         if (tflag)
 141                 clend();
 142         getout ();
 143 }
 144 \f
 145 recover (s)
 146 char    *s;
 147
 148 {
 149         register int    i;
 150         int             fdesc;
 151
 152         if ((fdesc = open (s,0)) == -1)
 153                 norec (s);
 154         read (fdesc,board,sizeof board);
 155         read (fdesc,off,sizeof off);
 156         read (fdesc,in,sizeof in);
 157         read (fdesc,dice,sizeof dice);
 158         read (fdesc,&cturn,sizeof cturn);
 159         read (fdesc,&dlast,sizeof dlast);
 160         read (fdesc,&pnum,sizeof pnum);
 161         read (fdesc,&rscore,sizeof rscore);
 162         read (fdesc,&wscore,sizeof wscore);
 163         read (fdesc,&gvalue,sizeof gvalue);
 164         read (fdesc,&raflag,sizeof raflag);
 165         close (fdesc);
 166         rflag = 1;
 167 }
 168
 169 norec (s)
 170 register char   *s;
 171
 172 {
 173         register char   *c;
 174
 175         tflag = 0;
 176         writel (cantrec);
 177         c = s;
 178         while (*c != '\0')
 179                 writec (*c++);
 180         getout ();
 181 }