1 /* $OpenBSD: getword.c,v 1.11 2016/09/11 09:32:47 tb Exp $ */
2 /* $NetBSD: getword.c,v 1.4 1995/03/23 08:32:45 cgd Exp $ */
3
4 /*
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <ctype.h>
34 #include <curses.h>
35 #include <err.h>
36 #include <stdlib.h>
37 #include <string.h>
38
39 #include "hangman.h"
40 #include "pathnames.h"
41
42 /*
43 * getword:
44 * Get a valid word out of the dictionary file
45 */
46 void
getword(void)47 getword(void)
48 {
49 FILE *inf;
50 char *wp, *gp;
51 long pos;
52 int badwords, countwords;
53 size_t wordlen;
54
55 inf = Dict;
56 badwords = 0;
57 /* Make sure the dictionary file is valid if it's not the default */
58 countwords = strcmp(Dict_name, _PATH_DICT);
59 while (badwords < MAXBADWORDS) {
60 if (countwords)
61 badwords++;
62 pos = arc4random_uniform(Dict_size);
63 fseek(inf, pos, SEEK_SET);
64 if (fgets(Word, BUFSIZ, inf) == NULL)
65 continue;
66 if (fgets(Word, BUFSIZ, inf) == NULL)
67 continue;
68 wordlen = strlen(Word);
69 if (wordlen > 0 && Word[wordlen - 1] == '\n')
70 Word[wordlen - 1] = '\0';
71 if (wordlen < MINLEN || wordlen > MAXLEN)
72 continue;
73 for (wp = Word; *wp; wp++)
74 if (!islower((unsigned char)*wp))
75 goto cont;
76 break;
77 cont: ;
78 }
79 if (badwords >= MAXBADWORDS) {
80 mvcur(0, COLS - 1, LINES - 1, 0);
81 endwin();
82 errx(1, "file %s appears to be incorrectly formatted\n"
83 "(Need one lower-case word per line)", Dict_name);
84 }
85 gp = Known;
86 wp = Word;
87 while (*wp) {
88 *gp++ = '-';
89 wp++;
90 }
91 *gp = '\0';
92 }
93