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      1 /*	$NetBSD: io.c,v 1.27 2012/10/13 20:36:06 dholland Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1980, 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[] = "@(#)io.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: io.c,v 1.27 2012/10/13 20:36:06 dholland Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <ctype.h>
     42 #include <curses.h>
     43 #include <signal.h>
     44 #include <stdarg.h>
     45 #include <stdlib.h>
     46 #include <string.h>
     47 #include <termios.h>
     48 #include <unistd.h>
     49 
     50 #include "deck.h"
     51 #include "cribbage.h"
     52 #include "cribcur.h"
     53 
     54 #define	LINESIZE		128
     55 
     56 #ifdef CTRL
     57 #undef CTRL
     58 #endif
     59 #define	CTRL(X)			(X - 'A' + 1)
     60 
     61 static int msgcrd(CARD, BOOLEAN, const char *, BOOLEAN);
     62 static void printcard(WINDOW *, unsigned, CARD, BOOLEAN);
     63 static int incard(CARD *);
     64 static void wait_for(int);
     65 static int readchar(void);
     66 
     67 static char linebuf[LINESIZE];
     68 
     69 static const char *const rankname[RANKS] = {
     70 	"ACE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN",
     71 	"EIGHT", "NINE", "TEN", "JACK", "QUEEN", "KING"
     72 };
     73 
     74 static const char *const rankchar[RANKS] = {
     75 	"A", "2", "3", "4", "5", "6", "7", "8", "9", "T", "J", "Q", "K"
     76 };
     77 
     78 static const char *const suitname[SUITS] = {
     79 	"SPADES", "HEARTS", "DIAMONDS", "CLUBS"
     80 };
     81 
     82 static const char *const suitchar[SUITS] = {"S", "H", "D", "C"};
     83 
     84 /*
     85  * msgcard:
     86  *	Call msgcrd in one of two forms
     87  */
     88 int
     89 msgcard(CARD c, BOOLEAN brief)
     90 {
     91 	if (brief)
     92 		return (msgcrd(c, TRUE, NULL, TRUE));
     93 	else
     94 		return (msgcrd(c, FALSE, " of ", FALSE));
     95 }
     96 
     97 /*
     98  * msgcrd:
     99  *	Print the value of a card in ascii
    100  */
    101 static int
    102 msgcrd(CARD c, BOOLEAN brfrank, const char *mid, BOOLEAN brfsuit)
    103 {
    104 	if (c.rank == EMPTY || c.suit == EMPTY)
    105 		return (FALSE);
    106 	if (brfrank)
    107 		addmsg("%1.1s", rankchar[c.rank]);
    108 	else
    109 		addmsg("%s", rankname[c.rank]);
    110 	if (mid != NULL)
    111 		addmsg("%s", mid);
    112 	if (brfsuit)
    113 		addmsg("%1.1s", suitchar[c.suit]);
    114 	else
    115 		addmsg("%s", suitname[c.suit]);
    116 	return (TRUE);
    117 }
    118 
    119 /*
    120  * printcard:
    121  *	Print out a card.
    122  */
    123 static void
    124 printcard(WINDOW *win, unsigned cardno, CARD c, BOOLEAN blank)
    125 {
    126 	prcard(win, cardno * 2, cardno, c, blank);
    127 }
    128 
    129 /*
    130  * prcard:
    131  *	Print out a card on the window at the specified location
    132  */
    133 void
    134 prcard(WINDOW *win, int y, int x, CARD c, BOOLEAN blank)
    135 {
    136 	if (c.rank == EMPTY)
    137 		return;
    138 
    139 	mvwaddstr(win, y + 0, x, "+-----+");
    140 	mvwaddstr(win, y + 1, x, "|     |");
    141 	mvwaddstr(win, y + 2, x, "|     |");
    142 	mvwaddstr(win, y + 3, x, "|     |");
    143 	mvwaddstr(win, y + 4, x, "+-----+");
    144 	if (!blank) {
    145 		mvwaddch(win, y + 1, x + 1, rankchar[c.rank][0]);
    146 		waddch(win, suitchar[c.suit][0]);
    147 		mvwaddch(win, y + 3, x + 4, rankchar[c.rank][0]);
    148 		waddch(win, suitchar[c.suit][0]);
    149 	}
    150 }
    151 
    152 /*
    153  * prhand:
    154  *	Print a hand of n cards
    155  */
    156 void
    157 prhand(const CARD h[], unsigned n, WINDOW *win, BOOLEAN blank)
    158 {
    159 	unsigned i;
    160 
    161 	werase(win);
    162 	for (i = 0; i < n; i++)
    163 		printcard(win, i, *h++, blank);
    164 	wrefresh(win);
    165 }
    166 
    167 /*
    168  * infrom:
    169  *	reads a card, supposedly in hand, accepting unambigous brief
    170  *	input, returns the index of the card found...
    171  */
    172 int
    173 infrom(const CARD hand[], int n, const char *prompt)
    174 {
    175 	int i, j;
    176 	CARD crd;
    177 
    178 	if (n < 1) {
    179 		printf("\nINFROM: %d = n < 1!!\n", n);
    180 		exit(74);
    181 	}
    182 	for (;;) {
    183 		msg("%s", prompt);
    184 		if (incard(&crd)) {	/* if card is full card */
    185 			if (!is_one(crd, hand, n))
    186 				msg("That's not in your hand");
    187 			else {
    188 				for (i = 0; i < n; i++)
    189 					if (hand[i].rank == crd.rank &&
    190 					    hand[i].suit == crd.suit)
    191 						break;
    192 				if (i >= n) {
    193 			printf("\nINFROM: is_one or something messed up\n");
    194 					exit(77);
    195 				}
    196 				return (i);
    197 			}
    198 		} else			/* if not full card... */
    199 			if (crd.rank != EMPTY) {
    200 				for (i = 0; i < n; i++)
    201 					if (hand[i].rank == crd.rank)
    202 						break;
    203 				if (i >= n)
    204 					msg("No such rank in your hand");
    205 				else {
    206 					for (j = i + 1; j < n; j++)
    207 						if (hand[j].rank == crd.rank)
    208 							break;
    209 					if (j < n)
    210 						msg("Ambiguous rank");
    211 					else
    212 						return (i);
    213 				}
    214 			} else
    215 				msg("Sorry, I missed that");
    216 	}
    217 	/* NOTREACHED */
    218 }
    219 
    220 /*
    221  * incard:
    222  *	Inputs a card in any format.  It reads a line ending with a CR
    223  *	and then parses it.
    224  */
    225 static int
    226 incard(CARD *crd)
    227 {
    228 	int i;
    229 	int rnk, sut;
    230 	char *line, *p, *p1;
    231 	BOOLEAN retval;
    232 
    233 	retval = FALSE;
    234 	rnk = sut = EMPTY;
    235 	if (!(line = get_line()))
    236 		goto gotit;
    237 	p = p1 = line;
    238 	while (*p1 != ' ' && *p1 != '\0')
    239 		++p1;
    240 	*p1++ = '\0';
    241 	if (*p == '\0')
    242 		goto gotit;
    243 
    244 	/* IMPORTANT: no real card has 2 char first name */
    245 	if (strlen(p) == 2) {	/* check for short form */
    246 		rnk = EMPTY;
    247 		for (i = 0; i < RANKS; i++) {
    248 			if (*p == *rankchar[i]) {
    249 				rnk = i;
    250 				break;
    251 			}
    252 		}
    253 		if (rnk == EMPTY)
    254 			goto gotit;	/* it's nothing... */
    255 		++p;		/* advance to next char */
    256 		sut = EMPTY;
    257 		for (i = 0; i < SUITS; i++) {
    258 			if (*p == *suitchar[i]) {
    259 				sut = i;
    260 				break;
    261 			}
    262 		}
    263 		if (sut != EMPTY)
    264 			retval = TRUE;
    265 		goto gotit;
    266 	}
    267 	rnk = EMPTY;
    268 	for (i = 0; i < RANKS; i++) {
    269 		if (!strcmp(p, rankname[i]) || !strcmp(p, rankchar[i])) {
    270 			rnk = i;
    271 			break;
    272 		}
    273 	}
    274 	if (rnk == EMPTY)
    275 		goto gotit;
    276 	p = p1;
    277 	while (*p1 != ' ' && *p1 != '\0')
    278 		++p1;
    279 	*p1++ = '\0';
    280 	if (*p == '\0')
    281 		goto gotit;
    282 	if (!strcmp("OF", p)) {
    283 		p = p1;
    284 		while (*p1 != ' ' && *p1 != '\0')
    285 			++p1;
    286 		*p1++ = '\0';
    287 		if (*p == '\0')
    288 			goto gotit;
    289 	}
    290 	sut = EMPTY;
    291 	for (i = 0; i < SUITS; i++) {
    292 		if (!strcmp(p, suitname[i]) || !strcmp(p, suitchar[i])) {
    293 			sut = i;
    294 			break;
    295 		}
    296 	}
    297 	if (sut != EMPTY)
    298 		retval = TRUE;
    299 gotit:
    300 	(*crd).rank = rnk;
    301 	(*crd).suit = sut;
    302 	return (retval);
    303 }
    304 
    305 /*
    306  * getuchar:
    307  *	Reads and converts to upper case
    308  */
    309 int
    310 getuchar(void)
    311 {
    312 	int c;
    313 
    314 	c = readchar();
    315 	if (islower(c))
    316 		c = toupper(c);
    317 	waddch(Msgwin, c);
    318 	return (c);
    319 }
    320 
    321 /*
    322  * number:
    323  *	Reads in a decimal number and makes sure it is between "lo" and
    324  *	"hi" inclusive.
    325  */
    326 int
    327 number(int lo, int hi, const char *prompt)
    328 {
    329 	char *p;
    330 	int sum;
    331 
    332 	for (sum = 0;;) {
    333 		msg("%s", prompt);
    334 		if (!(p = get_line()) || *p == '\0') {
    335 			msg(quiet ? "Not a number" :
    336 			    "That doesn't look like a number");
    337 			continue;
    338 		}
    339 		sum = 0;
    340 
    341 		if (!isdigit((unsigned char)*p))
    342 			sum = lo - 1;
    343 		else
    344 			while (isdigit((unsigned char)*p)) {
    345 				sum = 10 * sum + (*p - '0');
    346 				++p;
    347 			}
    348 
    349 		if (*p != ' ' && *p != '\t' && *p != '\0')
    350 			sum = lo - 1;
    351 		if (sum >= lo && sum <= hi)
    352 			break;
    353 		if (sum == lo - 1)
    354 			msg("that doesn't look like a number, try again --> ");
    355 		else
    356 		msg("%d is not between %d and %d inclusive, try again --> ",
    357 			    sum, lo, hi);
    358 	}
    359 	return (sum);
    360 }
    361 
    362 /*
    363  * msg:
    364  *	Display a message at the top of the screen.
    365  */
    366 static char Msgbuf[BUFSIZ] = {'\0'};
    367 static int Mpos = 0;
    368 static int Newpos = 0;
    369 
    370 void
    371 msg(const char *fmt, ...)
    372 {
    373 	va_list ap;
    374 
    375 	va_start(ap, fmt);
    376 	(void)vsnprintf(&Msgbuf[Newpos], sizeof(Msgbuf)-Newpos, fmt, ap);
    377 	Newpos = strlen(Msgbuf);
    378 	va_end(ap);
    379 	endmsg();
    380 }
    381 
    382 /*
    383  * addmsg:
    384  *	Add things to the current message
    385  */
    386 void
    387 addmsg(const char *fmt, ...)
    388 {
    389 	va_list ap;
    390 
    391 	va_start(ap, fmt);
    392 	(void)vsnprintf(&Msgbuf[Newpos], sizeof(Msgbuf)-Newpos, fmt, ap);
    393 	Newpos = strlen(Msgbuf);
    394 	va_end(ap);
    395 }
    396 
    397 /*
    398  * endmsg:
    399  *	Display a new msg.
    400  */
    401 static int Lineno = 0;
    402 
    403 void
    404 endmsg(void)
    405 {
    406 	static int lastline = 0;
    407 	int len;
    408 	char *mp, *omp;
    409 
    410 	/* All messages should start with uppercase */
    411 	mvaddch(lastline + Y_MSG_START, SCORE_X, ' ');
    412 	if (islower((unsigned char)Msgbuf[0]) && Msgbuf[1] != ')')
    413 		Msgbuf[0] = toupper((unsigned char)Msgbuf[0]);
    414 	mp = Msgbuf;
    415 	len = strlen(mp);
    416 	if (len / MSG_X + Lineno >= MSG_Y) {
    417 		while (Lineno < MSG_Y) {
    418 			wmove(Msgwin, Lineno++, 0);
    419 			wclrtoeol(Msgwin);
    420 		}
    421 		Lineno = 0;
    422 	}
    423 	mvaddch(Lineno + Y_MSG_START, SCORE_X, '*');
    424 	lastline = Lineno;
    425 	do {
    426 		mvwaddstr(Msgwin, Lineno, 0, mp);
    427 		if ((len = strlen(mp)) > MSG_X) {
    428 			omp = mp;
    429 			for (mp = &mp[MSG_X - 1]; *mp != ' '; mp--)
    430 				continue;
    431 			while (*mp == ' ')
    432 				mp--;
    433 			mp++;
    434 			wmove(Msgwin, Lineno, mp - omp);
    435 			wclrtoeol(Msgwin);
    436 		}
    437 		if (++Lineno >= MSG_Y)
    438 			Lineno = 0;
    439 	} while (len > MSG_X);
    440 	wclrtoeol(Msgwin);
    441 	Mpos = len;
    442 	Newpos = 0;
    443 	wrefresh(Msgwin);
    444 	refresh();
    445 	wrefresh(Msgwin);
    446 }
    447 
    448 /*
    449  * do_wait:
    450  *	Wait for the user to type ' ' before doing anything else
    451  */
    452 void
    453 do_wait(void)
    454 {
    455 	static const char prompt[] = {'-', '-', 'M', 'o', 'r', 'e', '-', '-', '\0'};
    456 
    457 	if ((int)(Mpos + sizeof prompt) < MSG_X)
    458 		wmove(Msgwin, Lineno > 0 ? Lineno - 1 : MSG_Y - 1, Mpos);
    459 	else {
    460 		mvwaddch(Msgwin, Lineno, 0, ' ');
    461 		wclrtoeol(Msgwin);
    462 		if (++Lineno >= MSG_Y)
    463 			Lineno = 0;
    464 	}
    465 	waddstr(Msgwin, prompt);
    466 	wrefresh(Msgwin);
    467 	wait_for(' ');
    468 }
    469 
    470 /*
    471  * wait_for
    472  *	Sit around until the guy types the right key
    473  */
    474 static void
    475 wait_for(int ch)
    476 {
    477 	int c;
    478 
    479 	if (ch == '\n')
    480 		while ((c = readchar()) != '\n')
    481 			continue;
    482 	else
    483 		while (readchar() != ch)
    484 			continue;
    485 }
    486 
    487 /*
    488  * readchar:
    489  *	Reads and returns a character, checking for gross input errors
    490  */
    491 static int
    492 readchar(void)
    493 {
    494 	int cnt;
    495 	unsigned char c;
    496 
    497 over:
    498 	cnt = 0;
    499 	while (read(STDIN_FILENO, &c, sizeof(unsigned char)) <= 0)
    500 		if (cnt++ > 100) {	/* if we are getting infinite EOFs */
    501 			bye();		/* quit the game */
    502 			exit(1);
    503 		}
    504 	if (c == CTRL('L')) {
    505 		wrefresh(curscr);
    506 		goto over;
    507 	}
    508 	if (c == '\r')
    509 		return ('\n');
    510 	else
    511 		return (c);
    512 }
    513 
    514 /*
    515  * get_line:
    516  *      Reads the next line up to '\n' or EOF.  Multiple spaces are
    517  *	compressed to one space; a space is inserted before a ','
    518  */
    519 char *
    520 get_line(void)
    521 {
    522 	size_t pos;
    523 	int c, oy, ox;
    524 	WINDOW *oscr;
    525 
    526 	oscr = stdscr;
    527 	stdscr = Msgwin;
    528 	getyx(stdscr, oy, ox);
    529 	refresh();
    530 	/* loop reading in the string, and put it in a temporary buffer */
    531 	for (pos = 0; (c = readchar()) != '\n'; clrtoeol(), refresh()) {
    532 			if (c == erasechar()) {	/* process erase character */
    533 				if (pos > 0) {
    534 					int i;
    535 
    536 					pos--;
    537 					for (i = strlen(unctrl(linebuf[pos])); i; i--)
    538 						addch('\b');
    539 				}
    540 				continue;
    541 			} else
    542 				if (c == killchar()) {	/* process kill
    543 							 * character */
    544 					pos = 0;
    545 					move(oy, ox);
    546 					continue;
    547 				} else
    548 					if (pos == 0 && c == ' ')
    549 						continue;
    550 		if (pos >= LINESIZE - 1 || !(isprint(c) || c == ' '))
    551 			putchar(CTRL('G'));
    552 		else {
    553 			if (islower(c))
    554 				c = toupper(c);
    555 			linebuf[pos++] = c;
    556 			addstr(unctrl(c));
    557 			Mpos++;
    558 		}
    559 	}
    560 	linebuf[pos] = '\0';
    561 	stdscr = oscr;
    562 	return (linebuf);
    563 }
    564 
    565 void
    566 receive_intr(int signo __unused)
    567 {
    568 	bye();
    569 	exit(1);
    570 }
    571 
    572 /*
    573  * bye:
    574  *	Leave the program, cleaning things up as we go.
    575  */
    576 void
    577 bye(void)
    578 {
    579 	signal(SIGINT, SIG_IGN);
    580 	mvcur(0, COLS - 1, LINES - 1, 0);
    581 	fflush(stdout);
    582 	endwin();
    583 	putchar('\n');
    584 }
    585