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getword.c revision 1.6 
      1 /*	$NetBSD: getword.c,v 1.6 1999/09/08 21:57:17 jsm 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)getword.c	8.1 (Berkeley) 5/31/93";
     40 #else
     41 __RCSID("$NetBSD: getword.c,v 1.6 1999/09/08 21:57:17 jsm Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include "hangman.h"
     46 
     47 /*
     48  * getword:
     49  *	Get a valid word out of the dictionary file
     50  */
     51 void
     52 getword()
     53 {
     54 	FILE *inf;
     55 	char *wp, *gp;
     56 	long pos;
     57 
     58 	inf = Dict;
     59 	for (;;) {
     60 		pos = (double) rand() / (RAND_MAX + 1.0) * (double) Dict_size;
     61 		fseek(inf, pos, SEEK_SET);
     62 		if (fgets(Word, BUFSIZ, inf) == NULL)
     63 			continue;
     64 		if (fgets(Word, BUFSIZ, inf) == NULL)
     65 			continue;
     66 		Word[strlen(Word) - 1] = '\0';
     67 		if (strlen(Word) < MINLEN)
     68 			continue;
     69 		for (wp = Word; *wp; wp++)
     70 			if (!islower(*wp))
     71 				goto cont;
     72 		break;
     73 cont:		;
     74 	}
     75 	gp = Known;
     76 	wp = Word;
     77 	while (*wp) {
     78 		*gp++ = '-';
     79 		wp++;
     80 	}
     81 	*gp = '\0';
     82 }
     83