hangman/getword.c

   1 /*      $NetBSD: getword.c,v 1.4 1995/03/23 08:32:45 cgd 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 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)getword.c   8.1 (Berkeley) 5/31/93";
  39 #else
  40 static char rcsid[] = "$NetBSD: getword.c,v 1.4 1995/03/23 08:32:45 cgd Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 #include "hangman.h"
  45 #include <stdlib.h>
  46
  47 /*
  48  * getword:
  49  *      Get a valid word out of the dictionary file
  50  */
  51 getword()
  52 {
  53         register FILE           *inf;
  54         register char           *wp, *gp;
  55         register long            pos;
  56
  57         inf = Dict;
  58         for (;;) {
  59                 pos = (double)rand() / (RAND_MAX + 1.0) * (double)Dict_size;
  60                 fseek(inf, pos, 0);
  61                 if (fgets(Word, BUFSIZ, inf) == NULL)
  62                         continue;
  63                 if (fgets(Word, BUFSIZ, inf) == NULL)
  64                         continue;
  65                 Word[strlen(Word) - 1] = '\0';
  66                 if (strlen(Word) < MINLEN)
  67                         continue;
  68                 for (wp = Word; *wp; wp++)
  69                         if (!islower(*wp))
  70                                 goto cont;
  71                 break;
  72 cont:           ;
  73         }
  74         gp = Known;
  75         wp = Word;
  76         while (*wp) {
  77                 *gp++ = '-';
  78                 wp++;
  79         }
  80         *gp = '\0';
  81 }