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      1 /*	$NetBSD: save.c,v 1.16 2012/10/13 19:19:39 dholland 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)save.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: save.c,v 1.16 2012/10/13 19:19:39 dholland Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <errno.h>
     42 
     43 #include "back.h"
     44 
     45 static const char confirm[] = "Are you sure you want to leave now?";
     46 static const char prompt[] = "Enter a file name:  ";
     47 static const char exist1[] = "The file '";
     48 static const char exist2[] =
     49 "' already exists.\nAre you sure you want to use this file?";
     50 static const char cantuse[] = "\nCan't use ";
     51 static const char saved[] = "This game has been saved on the file '";
     52 static const char type[] = "'.\nType \"backgammon ";
     53 static const char rec[] = "\" to recover your game.\n\n";
     54 static const char cantrec[] = "Can't recover file:  ";
     55 
     56 static void norec(const char *) __dead;
     57 
     58 void
     59 save(struct move *mm, int n)
     60 {
     61 	int     fdesc;
     62 	char   *fs;
     63 	char    fname[50];
     64 
     65 	if (n) {
     66 		if (tflag) {
     67 			curmove(20, 0);
     68 			clend();
     69 		} else
     70 			writec('\n');
     71 		writel(confirm);
     72 		if (!yorn(0))
     73 			return;
     74 	}
     75 	cflag = 1;
     76 	for (;;) {
     77 		writel(prompt);
     78 		fs = fname;
     79 		while ((*fs = readc()) != '\n') {
     80 			if (*fs == old.c_cc[VERASE]) {
     81 				if (fs > fname) {
     82 					fs--;
     83 					if (tflag)
     84 						curmove(curr, curc - 1);
     85 					else
     86 						writec(*fs);
     87 				} else
     88 					writec('\007');
     89 				continue;
     90 			}
     91 			writec(*fs++);
     92 		}
     93 		*fs = '\0';
     94 		if ((fdesc = open(fname, O_RDWR)) == -1 && errno == ENOENT) {
     95 			if ((fdesc = creat(fname, 0600)) != -1)
     96 				break;
     97 		}
     98 		if (fdesc != -1) {
     99 			if (tflag) {
    100 				curmove(18, 0);
    101 				clend();
    102 			} else
    103 				writec('\n');
    104 			writel(exist1);
    105 			writel(fname);
    106 			writel(exist2);
    107 			cflag = 0;
    108 			close(fdesc);
    109 			if (yorn(0)) {
    110 				unlink(fname);
    111 				fdesc = creat(fname, 0600);
    112 				break;
    113 			} else {
    114 				cflag = 1;
    115 				continue;
    116 			}
    117 		}
    118 		writel(cantuse);
    119 		writel(fname);
    120 		writel(".\n");
    121 		cflag = 1;
    122 	}
    123 	write(fdesc, board, sizeof board);
    124 	write(fdesc, off, sizeof off);
    125 	write(fdesc, in, sizeof in);
    126 	write(fdesc, mm->dice, sizeof mm->dice);
    127 	write(fdesc, &cturn, sizeof cturn);
    128 	write(fdesc, &dlast, sizeof dlast);
    129 	write(fdesc, &pnum, sizeof pnum);
    130 	write(fdesc, &rscore, sizeof rscore);
    131 	write(fdesc, &wscore, sizeof wscore);
    132 	write(fdesc, &gvalue, sizeof gvalue);
    133 	write(fdesc, &raflag, sizeof raflag);
    134 	close(fdesc);
    135 	if (tflag)
    136 		curmove(18, 0);
    137 	writel(saved);
    138 	writel(fname);
    139 	writel(type);
    140 	writel(fname);
    141 	writel(rec);
    142 	if (tflag)
    143 		clend();
    144 	getout(0);
    145 }
    146 
    147 void
    148 recover(struct move *mm, const char *s)
    149 {
    150 	int     fdesc;
    151 
    152 	if ((fdesc = open(s, O_RDONLY)) == -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, mm->dice, sizeof mm->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 static void
    170 norec(const char *s)
    171 {
    172 	const char   *c;
    173 
    174 	tflag = 0;
    175 	writel(cantrec);
    176 	c = s;
    177 	while (*c != '\0')
    178 		writec(*c++);
    179 	getout(0);
    180 }
    181