1/*	$NetBSD: save.c,v 1.15 2012/10/13 18:44:15 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
35static char sccsid[] = "@(#)save.c	8.1 (Berkeley) 5/31/93";
36#else
37__RCSID("$NetBSD: save.c,v 1.15 2012/10/13 18:44:15 dholland Exp $");
38#endif
39#endif /* not lint */
40
41#include <errno.h>
42
43#include "back.h"
44
45static const char confirm[] = "Are you sure you want to leave now?";
46static const char prompt[] = "Enter a file name:  ";
47static const char exist1[] = "The file '";
48static const char exist2[] =
49"' already exists.\nAre you sure you want to use this file?";
50static const char cantuse[] = "\nCan't use ";
51static const char saved[] = "This game has been saved on the file '";
52static const char type[] = "'.\nType \"backgammon ";
53static const char rec[] = "\" to recover your game.\n\n";
54static const char cantrec[] = "Can't recover file:  ";
55
56static void norec(const char *) __dead;
57
58void
59save(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
147void
148recover(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
169static void
170norec(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