1/*	$NetBSD: save.c,v 1.11 2003/08/07 09:37:03 agc Exp $	*/
2
3/*
4 * Copyright (c) 1983, 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	8.2 (Berkeley) 4/28/95";
36#else
37__RCSID("$NetBSD: save.c,v 1.11 2003/08/07 09:37:03 agc Exp $");
38#endif
39#endif				/* not lint */
40
41#include "extern.h"
42
43void
44restore(const char *filename)
45{
46	int     n;
47	int     tmp;
48	FILE   *fp;
49
50	if (filename == NULL)
51		exit(1); /* Error determining save file name.  */
52	if ((fp = fopen(filename, "r")) == 0) {
53		err(1, "fopen %s", filename);
54	}
55	fread(&WEIGHT, sizeof WEIGHT, 1, fp);
56	fread(&CUMBER, sizeof CUMBER, 1, fp);
57	fread(&ourclock, sizeof ourclock, 1, fp);
58	fread(&tmp, sizeof tmp, 1, fp);
59	location = tmp ? dayfile : nightfile;
60	for (n = 1; n <= NUMOFROOMS; n++) {
61		fread(location[n].link, sizeof location[n].link, 1, fp);
62		fread(location[n].objects, sizeof location[n].objects, 1, fp);
63	}
64	fread(inven, sizeof inven, 1, fp);
65	fread(wear, sizeof wear, 1, fp);
66	fread(injuries, sizeof injuries, 1, fp);
67	fread(notes, sizeof notes, 1, fp);
68	fread(&direction, sizeof direction, 1, fp);
69	fread(&position, sizeof position, 1, fp);
70	fread(&ourtime, sizeof ourtime, 1, fp);
71	fread(&fuel, sizeof fuel, 1, fp);
72	fread(&torps, sizeof torps, 1, fp);
73	fread(&carrying, sizeof carrying, 1, fp);
74	fread(&encumber, sizeof encumber, 1, fp);
75	fread(&rythmn, sizeof rythmn, 1, fp);
76	fread(&followfight, sizeof followfight, 1, fp);
77	fread(&ate, sizeof ate, 1, fp);
78	fread(&snooze, sizeof snooze, 1, fp);
79	fread(&meetgirl, sizeof meetgirl, 1, fp);
80	fread(&followgod, sizeof followgod, 1, fp);
81	fread(&godready, sizeof godready, 1, fp);
82	fread(&win, sizeof win, 1, fp);
83	fread(&wintime, sizeof wintime, 1, fp);
84	fread(&matchlight, sizeof matchlight, 1, fp);
85	fread(&matchcount, sizeof matchcount, 1, fp);
86	fread(&loved, sizeof loved, 1, fp);
87	fread(&pleasure, sizeof pleasure, 1, fp);
88	fread(&power, sizeof power, 1, fp);
89	/* We must check the last read, to catch truncated save files */
90	if (fread(&ego, sizeof ego, 1, fp) < 1)
91		errx(1, "save file %s too short", filename);
92	fclose(fp);
93}
94
95void
96save(const char *filename)
97{
98	int     n;
99	int     tmp;
100	FILE   *fp;
101
102	if (filename == NULL)
103		return; /* Error determining save file name.  */
104	if ((fp = fopen(filename, "w")) == NULL) {
105		warn("fopen %s", filename);
106		return;
107	}
108	printf("Saved in %s.\n", filename);
109	fwrite(&WEIGHT, sizeof WEIGHT, 1, fp);
110	fwrite(&CUMBER, sizeof CUMBER, 1, fp);
111	fwrite(&ourclock, sizeof ourclock, 1, fp);
112	tmp = location == dayfile;
113	fwrite(&tmp, sizeof tmp, 1, fp);
114	for (n = 1; n <= NUMOFROOMS; n++) {
115		fwrite(location[n].link, sizeof location[n].link, 1, fp);
116		fwrite(location[n].objects, sizeof location[n].objects, 1, fp);
117	}
118	fwrite(inven, sizeof inven, 1, fp);
119	fwrite(wear, sizeof wear, 1, fp);
120	fwrite(injuries, sizeof injuries, 1, fp);
121	fwrite(notes, sizeof notes, 1, fp);
122	fwrite(&direction, sizeof direction, 1, fp);
123	fwrite(&position, sizeof position, 1, fp);
124	fwrite(&ourtime, sizeof ourtime, 1, fp);
125	fwrite(&fuel, sizeof fuel, 1, fp);
126	fwrite(&torps, sizeof torps, 1, fp);
127	fwrite(&carrying, sizeof carrying, 1, fp);
128	fwrite(&encumber, sizeof encumber, 1, fp);
129	fwrite(&rythmn, sizeof rythmn, 1, fp);
130	fwrite(&followfight, sizeof followfight, 1, fp);
131	fwrite(&ate, sizeof ate, 1, fp);
132	fwrite(&snooze, sizeof snooze, 1, fp);
133	fwrite(&meetgirl, sizeof meetgirl, 1, fp);
134	fwrite(&followgod, sizeof followgod, 1, fp);
135	fwrite(&godready, sizeof godready, 1, fp);
136	fwrite(&win, sizeof win, 1, fp);
137	fwrite(&wintime, sizeof wintime, 1, fp);
138	fwrite(&matchlight, sizeof matchlight, 1, fp);
139	fwrite(&matchcount, sizeof matchcount, 1, fp);
140	fwrite(&loved, sizeof loved, 1, fp);
141	fwrite(&pleasure, sizeof pleasure, 1, fp);
142	fwrite(&power, sizeof power, 1, fp);
143	fwrite(&ego, sizeof ego, 1, fp);
144	fflush(fp);
145	if (ferror(fp))
146		warn("fwrite %s", filename);
147	fclose(fp);
148}
149
150/*
151 * Given a save file name (possibly from fgetln, so without terminating NUL),
152 * determine the name of the file to be saved to by adding the HOME
153 * directory if the name does not contain a slash.  Name will be allocated
154 * with malloc(3).
155 */
156char *
157save_file_name(const char *filename, size_t len)
158{
159	char   *home;
160	char   *newname;
161	size_t	tmpl;
162
163	if (memchr(filename, '/', len)) {
164		newname = malloc(len + 1);
165		if (newname == NULL) {
166			warn(NULL);
167			return NULL;
168		}
169		memcpy(newname, filename, len);
170		newname[len] = 0;
171	} else {
172		home = getenv("HOME");
173		if (home != NULL) {
174			tmpl = strlen(home);
175			newname = malloc(tmpl + len + 2);
176			if (newname == NULL) {
177				warn(NULL);
178				return NULL;
179			}
180			memcpy(newname, home, tmpl);
181			newname[tmpl] = '/';
182			memcpy(newname + tmpl + 1, filename, len);
183			newname[tmpl + len + 1] = 0;
184		} else {
185			newname = malloc(len + 1);
186			if (newname == NULL) {
187				warn(NULL);
188				return NULL;
189			}
190			memcpy(newname, filename, len);
191			newname[len] = 0;
192		}
193	}
194	return newname;
195}
196