io.c

/*	$NetBSD: io.c,v 1.27 2012/10/13 20:36:06 dholland Exp $	*/

/*-
 * Copyright (c) 1980, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)io.c	8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: io.c,v 1.27 2012/10/13 20:36:06 dholland Exp $");
#endif
#endif /* not lint */

#include <ctype.h>
#include <curses.h>
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>

#include "deck.h"
#include "cribbage.h"
#include "cribcur.h"

#define	LINESIZE		128

#ifdef CTRL
#undef CTRL
#endif
#define	CTRL(X)			(X - 'A' + 1)

static int msgcrd(CARD, BOOLEAN, const char *, BOOLEAN);
static void printcard(WINDOW *, unsigned, CARD, BOOLEAN);
static int incard(CARD *);
static void wait_for(int);
static int readchar(void);

static char linebuf[LINESIZE];

static const char *const rankname[RANKS] = {
	"ACE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN",
	"EIGHT", "NINE", "TEN", "JACK", "QUEEN", "KING"
};

static const char *const rankchar[RANKS] = {
	"A", "2", "3", "4", "5", "6", "7", "8", "9", "T", "J", "Q", "K"
};

static const char *const suitname[SUITS] = {
	"SPADES", "HEARTS", "DIAMONDS", "CLUBS"
};

static const char *const suitchar[SUITS] = {"S", "H", "D", "C"};

/*
 * msgcard:
 *	Call msgcrd in one of two forms
 */
int
msgcard(CARD c, BOOLEAN brief)
{
	if (brief)
		return (msgcrd(c, TRUE, NULL, TRUE));
	else
		return (msgcrd(c, FALSE, " of ", FALSE));
}

/*
 * msgcrd:
 *	Print the value of a card in ascii
 */
static int
msgcrd(CARD c, BOOLEAN brfrank, const char *mid, BOOLEAN brfsuit)
{
	if (c.rank == EMPTY || c.suit == EMPTY)
		return (FALSE);
	if (brfrank)
		addmsg("%1.1s", rankchar[c.rank]);
	else
		addmsg("%s", rankname[c.rank]);
	if (mid != NULL)
		addmsg("%s", mid);
	if (brfsuit)
		addmsg("%1.1s", suitchar[c.suit]);
	else
		addmsg("%s", suitname[c.suit]);
	return (TRUE);
}

/*
 * printcard:
 *	Print out a card.
 */
static void
printcard(WINDOW *win, unsigned cardno, CARD c, BOOLEAN blank)
{
	prcard(win, cardno * 2, cardno, c, blank);
}

/*
 * prcard:
 *	Print out a card on the window at the specified location
 */
void
prcard(WINDOW *win, int y, int x, CARD c, BOOLEAN blank)
{
	if (c.rank == EMPTY)
		return;

	mvwaddstr(win, y + 0, x, "+-----+");
	mvwaddstr(win, y + 1, x, "|     |");
	mvwaddstr(win, y + 2, x, "|     |");
	mvwaddstr(win, y + 3, x, "|     |");
	mvwaddstr(win, y + 4, x, "+-----+");
	if (!blank) {
		mvwaddch(win, y + 1, x + 1, rankchar[c.rank][0]);
		waddch(win, suitchar[c.suit][0]);
		mvwaddch(win, y + 3, x + 4, rankchar[c.rank][0]);
		waddch(win, suitchar[c.suit][0]);
	}
}

/*
 * prhand:
 *	Print a hand of n cards
 */
void
prhand(const CARD h[], unsigned n, WINDOW *win, BOOLEAN blank)
{
	unsigned i;

	werase(win);
	for (i = 0; i < n; i++)
		printcard(win, i, *h++, blank);
	wrefresh(win);
}

/*
 * infrom:
 *	reads a card, supposedly in hand, accepting unambigous brief
 *	input, returns the index of the card found...
 */
int
infrom(const CARD hand[], int n, const char *prompt)
{
	int i, j;
	CARD crd;

	if (n < 1) {
		printf("\nINFROM: %d = n < 1!!\n", n);
		exit(74);
	}
	for (;;) {
		msg("%s", prompt);
		if (incard(&crd)) {	/* if card is full card */
			if (!is_one(crd, hand, n))
				msg("That's not in your hand");
			else {
				for (i = 0; i < n; i++)
					if (hand[i].rank == crd.rank &&
					    hand[i].suit == crd.suit)
						break;
				if (i >= n) {
			printf("\nINFROM: is_one or something messed up\n");
					exit(77);
				}
				return (i);
			}
		} else			/* if not full card... */
			if (crd.rank != EMPTY) {
				for (i = 0; i < n; i++)
					if (hand[i].rank == crd.rank)
						break;
				if (i >= n)
					msg("No such rank in your hand");
				else {
					for (j = i + 1; j < n; j++)
						if (hand[j].rank == crd.rank)
							break;
					if (j < n)
						msg("Ambiguous rank");
					else
						return (i);
				}
			} else
				msg("Sorry, I missed that");
	}
	/* NOTREACHED */
}

/*
 * incard:
 *	Inputs a card in any format.  It reads a line ending with a CR
 *	and then parses it.
 */
static int
incard(CARD *crd)
{
	int i;
	int rnk, sut;
	char *line, *p, *p1;
	BOOLEAN retval;

	retval = FALSE;
	rnk = sut = EMPTY;
	if (!(line = get_line()))
		goto gotit;
	p = p1 = line;
	while (*p1 != ' ' && *p1 != '\0')
		++p1;
	*p1++ = '\0';
	if (*p == '\0')
		goto gotit;

	/* IMPORTANT: no real card has 2 char first name */
	if (strlen(p) == 2) {	/* check for short form */
		rnk = EMPTY;
		for (i = 0; i < RANKS; i++) {
			if (*p == *rankchar[i]) {
				rnk = i;
				break;
			}
		}
		if (rnk == EMPTY)
			goto gotit;	/* it's nothing... */
		++p;		/* advance to next char */
		sut = EMPTY;
		for (i = 0; i < SUITS; i++) {
			if (*p == *suitchar[i]) {
				sut = i;
				break;
			}
		}
		if (sut != EMPTY)
			retval = TRUE;
		goto gotit;
	}
	rnk = EMPTY;
	for (i = 0; i < RANKS; i++) {
		if (!strcmp(p, rankname[i]) || !strcmp(p, rankchar[i])) {
			rnk = i;
			break;
		}
	}
	if (rnk == EMPTY)
		goto gotit;
	p = p1;
	while (*p1 != ' ' && *p1 != '\0')
		++p1;
	*p1++ = '\0';
	if (*p == '\0')
		goto gotit;
	if (!strcmp("OF", p)) {
		p = p1;
		while (*p1 != ' ' && *p1 != '\0')
			++p1;
		*p1++ = '\0';
		if (*p == '\0')
			goto gotit;
	}
	sut = EMPTY;
	for (i = 0; i < SUITS; i++) {
		if (!strcmp(p, suitname[i]) || !strcmp(p, suitchar[i])) {
			sut = i;
			break;
		}
	}
	if (sut != EMPTY)
		retval = TRUE;
gotit:
	(*crd).rank = rnk;
	(*crd).suit = sut;
	return (retval);
}

/*
 * getuchar:
 *	Reads and converts to upper case
 */
int
getuchar(void)
{
	int c;

	c = readchar();
	if (islower(c))
		c = toupper(c);
	waddch(Msgwin, c);
	return (c);
}

/*
 * number:
 *	Reads in a decimal number and makes sure it is between "lo" and
 *	"hi" inclusive.
 */
int
number(int lo, int hi, const char *prompt)
{
	char *p;
	int sum;

	for (sum = 0;;) {
		msg("%s", prompt);
		if (!(p = get_line()) || *p == '\0') {
			msg(quiet ? "Not a number" :
			    "That doesn't look like a number");
			continue;
		}
		sum = 0;

		if (!isdigit((unsigned char)*p))
			sum = lo - 1;
		else
			while (isdigit((unsigned char)*p)) {
				sum = 10 * sum + (*p - '0');
				++p;
			}

		if (*p != ' ' && *p != '\t' && *p != '\0')
			sum = lo - 1;
		if (sum >= lo && sum <= hi)
			break;
		if (sum == lo - 1)
			msg("that doesn't look like a number, try again --> ");
		else
		msg("%d is not between %d and %d inclusive, try again --> ",
			    sum, lo, hi);
	}
	return (sum);
}

/*
 * msg:
 *	Display a message at the top of the screen.
 */
static char Msgbuf[BUFSIZ] = {'\0'};
static int Mpos = 0;
static int Newpos = 0;

void
msg(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	(void)vsnprintf(&Msgbuf[Newpos], sizeof(Msgbuf)-Newpos, fmt, ap);
	Newpos = strlen(Msgbuf);
	va_end(ap);
	endmsg();
}

/*
 * addmsg:
 *	Add things to the current message
 */
void
addmsg(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	(void)vsnprintf(&Msgbuf[Newpos], sizeof(Msgbuf)-Newpos, fmt, ap);
	Newpos = strlen(Msgbuf);
	va_end(ap);
}

/*
 * endmsg:
 *	Display a new msg.
 */
static int Lineno = 0;

void
endmsg(void)
{
	static int lastline = 0;
	int len;
	char *mp, *omp;

	/* All messages should start with uppercase */
	mvaddch(lastline + Y_MSG_START, SCORE_X, ' ');
	if (islower((unsigned char)Msgbuf[0]) && Msgbuf[1] != ')')
		Msgbuf[0] = toupper((unsigned char)Msgbuf[0]);
	mp = Msgbuf;
	len = strlen(mp);
	if (len / MSG_X + Lineno >= MSG_Y) {
		while (Lineno < MSG_Y) {
			wmove(Msgwin, Lineno++, 0);
			wclrtoeol(Msgwin);
		}
		Lineno = 0;
	}
	mvaddch(Lineno + Y_MSG_START, SCORE_X, '*');
	lastline = Lineno;
	do {
		mvwaddstr(Msgwin, Lineno, 0, mp);
		if ((len = strlen(mp)) > MSG_X) {
			omp = mp;
			for (mp = &mp[MSG_X - 1]; *mp != ' '; mp--)
				continue;
			while (*mp == ' ')
				mp--;
			mp++;
			wmove(Msgwin, Lineno, mp - omp);
			wclrtoeol(Msgwin);
		}
		if (++Lineno >= MSG_Y)
			Lineno = 0;
	} while (len > MSG_X);
	wclrtoeol(Msgwin);
	Mpos = len;
	Newpos = 0;
	wrefresh(Msgwin);
	refresh();
	wrefresh(Msgwin);
}

/*
 * do_wait:
 *	Wait for the user to type ' ' before doing anything else
 */
void
do_wait(void)
{
	static const char prompt[] = {'-', '-', 'M', 'o', 'r', 'e', '-', '-', '\0'};

	if ((int)(Mpos + sizeof prompt) < MSG_X)
		wmove(Msgwin, Lineno > 0 ? Lineno - 1 : MSG_Y - 1, Mpos);
	else {
		mvwaddch(Msgwin, Lineno, 0, ' ');
		wclrtoeol(Msgwin);
		if (++Lineno >= MSG_Y)
			Lineno = 0;
	}
	waddstr(Msgwin, prompt);
	wrefresh(Msgwin);
	wait_for(' ');
}

/*
 * wait_for
 *	Sit around until the guy types the right key
 */
static void
wait_for(int ch)
{
	int c;

	if (ch == '\n')
		while ((c = readchar()) != '\n')
			continue;
	else
		while (readchar() != ch)
			continue;
}

/*
 * readchar:
 *	Reads and returns a character, checking for gross input errors
 */
static int
readchar(void)
{
	int cnt;
	unsigned char c;

over:
	cnt = 0;
	while (read(STDIN_FILENO, &c, sizeof(unsigned char)) <= 0)
		if (cnt++ > 100) {	/* if we are getting infinite EOFs */
			bye();		/* quit the game */
			exit(1);
		}
	if (c == CTRL('L')) {
		wrefresh(curscr);
		goto over;
	}
	if (c == '\r')
		return ('\n');
	else
		return (c);
}

/*
 * get_line:
 *      Reads the next line up to '\n' or EOF.  Multiple spaces are
 *	compressed to one space; a space is inserted before a ','
 */
char *
get_line(void)
{
	size_t pos;
	int c, oy, ox;
	WINDOW *oscr;

	oscr = stdscr;
	stdscr = Msgwin;
	getyx(stdscr, oy, ox);
	refresh();
	/* loop reading in the string, and put it in a temporary buffer */
	for (pos = 0; (c = readchar()) != '\n'; clrtoeol(), refresh()) {
			if (c == erasechar()) {	/* process erase character */
				if (pos > 0) {
					int i;

					pos--;
					for (i = strlen(unctrl(linebuf[pos])); i; i--)
						addch('\b');
				}
				continue;
			} else
				if (c == killchar()) {	/* process kill
							 * character */
					pos = 0;
					move(oy, ox);
					continue;
				} else
					if (pos == 0 && c == ' ')
						continue;
		if (pos >= LINESIZE - 1 || !(isprint(c) || c == ' '))
			putchar(CTRL('G'));
		else {
			if (islower(c))
				c = toupper(c);
			linebuf[pos++] = c;
			addstr(unctrl(c));
			Mpos++;
		}
	}
	linebuf[pos] = '\0';
	stdscr = oscr;
	return (linebuf);
}

void
receive_intr(int signo __unused)
{
	bye();
	exit(1);
}

/*
 * bye:
 *	Leave the program, cleaning things up as we go.
 */
void
bye(void)
{
	signal(SIGINT, SIG_IGN);
	mvcur(0, COLS - 1, LINES - 1, 0);
	fflush(stdout);
	endwin();
	putchar('\n');
}