1: /*      $NetBSD: getword.c,v 1.9 2004/11/05 21:30:32 dsl 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
   35: static char sccsid[] = "@(#)getword.c   8.1 (Berkeley) 5/31/93";
   36: #else
   37: __RCSID("$NetBSD: getword.c,v 1.9 2004/11/05 21:30:32 dsl Exp $");
   38: #endif
   39: #endif /* not lint */
   40: 
   41: #include "hangman.h"
   42: 
   43: /*
   44:  * getword:
   45:  *      Get a valid word out of the dictionary file
   46:  */
   47: void
   48: getword()
   49: {
   50:         FILE *inf;
   51:         char *wp, *gp;
   52:         long pos;
   53: 
   54:         inf = Dict;
   55:         for (;;) {
   56:                 pos = (double) rand() / (RAND_MAX + 1.0) * (double) Dict_size;
   57:                 fseek(inf, pos, SEEK_SET);
   58:                 if (fgets(Word, BUFSIZ, inf) == NULL)
   59:                         continue;
   60:                 if (fgets(Word, BUFSIZ, inf) == NULL)
   61:                         continue;
   62:                 Word[strlen(Word) - 1] = '\0';
   63:                 if (strlen(Word) < Minlen)
   64:                         continue;
   65:                 for (wp = Word; *wp; wp++)
   66:                         if (!islower((unsigned char)*wp))
   67:                                 goto cont;
   68:                 break;
   69: cont:           ;
   70:         }
   71:         gp = Known;
   72:         wp = Word;
   73:         while (*wp) {
   74:                 *gp++ = '-';
   75:                 wp++;
   76:         }
   77:         *gp = '\0';
   78: }