games - backgammon - use defined names instead of magic numbers.
[games.git] / games / backgammon / common_source / save.c
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1/*
2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. 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.
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32 *
33 * @(#)save.c 8.1 (Berkeley) 5/31/93
34 * $FreeBSD: src/games/backgammon/common_source/save.c,v 1.8 1999/11/30 03:48:27 billf Exp $
120e5d0e 35 * $DragonFly: src/games/backgammon/common_source/save.c,v 1.4 2006/08/08 16:36:11 pavalos Exp $
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36 */
37
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38#include <fcntl.h>
39#include <errno.h>
40#include "back.h"
41
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42static void norec(const char *);
43
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44static const char confirm[] = "Are you sure you want to leave now?";
45static const char prompt[] = "Enter a file name: ";
46static const char exist1[] = "The file '";
47static const char exist2[] =
48 "' already exists.\nAre you sure you want to use this file?";
49static const char cantuse[] = "\nCan't use ";
50static const char saved[] = "This game has been saved on the file '";
51static const char type[] = "'.\nType \"backgammon ";
52static const char rec[] = "\" to recover your game.\n\n";
53static const char cantrec[] = "Can't recover file: ";
54
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55void
56save(int n)
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57{
58 int fdesc;
59 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') {
ff8baa3a 77 if (*fs == tty.c_cc[VERASE]) {
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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,O_RDWR)) == -1 && errno == ENOENT) {
92 if ((fdesc = creat (fname,0600)) != -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");
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118 cflag = 1;
119 }
120 write (fdesc,board,sizeof board);
121 write (fdesc,off,sizeof off);
122 write (fdesc,in,sizeof in);
123 write (fdesc,dice,sizeof dice);
124 write (fdesc,&cturn,sizeof cturn);
125 write (fdesc,&dlast,sizeof dlast);
126 write (fdesc,&pnum,sizeof pnum);
127 write (fdesc,&rscore,sizeof rscore);
128 write (fdesc,&wscore,sizeof wscore);
129 write (fdesc,&gvalue,sizeof gvalue);
130 write (fdesc,&raflag,sizeof raflag);
131 close (fdesc);
132 if (tflag)
133 curmove (18,0);
134 writel (saved);
135 writel (fname);
136 writel (type);
137 writel (fname);
138 writel (rec);
139 if (tflag)
140 clend();
141 getout ();
142}
984263bc 143
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144void
145recover(const char *s)
984263bc 146{
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147 int fdesc;
148
149 if ((fdesc = open (s,O_RDONLY)) == -1)
150 norec (s);
151 read (fdesc,board,sizeof board);
152 read (fdesc,off,sizeof off);
153 read (fdesc,in,sizeof in);
154 read (fdesc,dice,sizeof dice);
155 read (fdesc,&cturn,sizeof cturn);
156 read (fdesc,&dlast,sizeof dlast);
157 read (fdesc,&pnum,sizeof pnum);
158 read (fdesc,&rscore,sizeof rscore);
159 read (fdesc,&wscore,sizeof wscore);
160 read (fdesc,&gvalue,sizeof gvalue);
161 read (fdesc,&raflag,sizeof raflag);
162 close (fdesc);
163 rflag = 1;
164}
165
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166static void
167norec(const char *s)
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168{
169 const char *c;
170
171 tflag = 0;
172 writel (cantrec);
173 c = s;
174 while (*c != '\0')
175 writec (*c++);
176 getout ();
177}