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 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