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      1 /*	$NetBSD: getguess.c,v 1.10 2012/10/13 21:01:13 dholland 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[] = "@(#)getguess.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: getguess.c,v 1.10 2012/10/13 21:01:13 dholland Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <sys/ttydefaults.h>
     42 #include "hangman.h"
     43 
     44 /*
     45  * getguess:
     46  *	Get another guess
     47  */
     48 void
     49 getguess(void)
     50 {
     51 	int i;
     52 	int ch;
     53 	bool correct;
     54 
     55 	leaveok(stdscr, FALSE);
     56 	for (;;) {
     57 		move(PROMPTY, PROMPTX + sizeof "Guess: ");
     58 		refresh();
     59 		ch = readch();
     60 		if (isalpha(ch)) {
     61 			if (isupper(ch))
     62 				ch = tolower(ch);
     63 			if (Guessed[ch - 'a'])
     64 				mvprintw(MESGY, MESGX, "Already guessed '%c'",
     65 				    ch);
     66 			else
     67 				break;
     68 		} else
     69 			if (ch == CTRL('D'))
     70 				die(0);
     71 			else
     72 				mvprintw(MESGY, MESGX,
     73 				    "Not a valid guess: '%s'", unctrl(ch));
     74 	}
     75 	leaveok(stdscr, TRUE);
     76 	move(MESGY, MESGX);
     77 	clrtoeol();
     78 
     79 	Guessed[ch - 'a'] = true;
     80 	correct = false;
     81 	for (i = 0; Word[i] != '\0'; i++)
     82 		if (Word[i] == ch) {
     83 			Known[i] = ch;
     84 			correct = true;
     85 		}
     86 	if (!correct)
     87 		Errors++;
     88 }
     89 /*
     90  * readch;
     91  *	Read a character from the input
     92  */
     93 int
     94 readch(void)
     95 {
     96 	int cnt;
     97 	char ch;
     98 
     99 	cnt = 0;
    100 	for (;;) {
    101 		if (read(0, &ch, sizeof ch) <= 0) {
    102 			if (++cnt > 100)
    103 				die(0);
    104 		} else
    105 			if (ch == CTRL('L')) {
    106 				wrefresh(curscr);
    107 			} else
    108 				return ch;
    109 	}
    110 }
    111