initdeck.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

# include	<stdio.h>
# include	"deck.h"

/*
 *	This program initializes the card files for monopoly.
 * It reads in a data file with Com. Chest cards, followed by
 * the Chance card.  The two are seperated by a line of "%-".
 * All other cards are seperated by lines of "%%".  In the front
 * of the file is the data for the decks in the same order.
 * This includes the seek pointer for the start of each card.
 * All cards start with their execution code, followed by the
 * string to print, terminated with a null byte.
 */

# define	TRUE	1
# define	FALSE	0

# define	bool	char
# define	reg	register

char	*infile		= "../cards.inp",	/* input file		*/
	*outfile	= "cards.pck";		/* "packed" file	*/

long	ftell();

DECK	deck[2];

FILE	*inf, *outf;

main(ac, av)
int	ac;
char	*av[]; {

	getargs(ac, av);
	if ((inf = fopen(infile, "r")) == NULL) {
		perror(infile);
		exit(1);
	}
	count();
	/*
	 * allocate space for pointers.
	 */
	CC_D.offsets = calloc(CC_D.num_cards + 1, sizeof (long));
	CH_D.offsets = calloc(CH_D.num_cards + 1, sizeof (long));
	fseek(inf, 0L, 0);
	if ((outf = fopen(outfile, "w")) == NULL) {
		perror(outfile);
		exit(0);
	}

	fwrite(deck, sizeof (DECK), 2, outf);
	fwrite(CC_D.offsets, sizeof (long), CC_D.num_cards, outf);
	fwrite(CH_D.offsets, sizeof (long), CH_D.num_cards, outf);
	putem();

	fclose(inf);
	fseek(outf, 0, 0L);
	fwrite(deck, sizeof (DECK), 2, outf);
	fwrite(CC_D.offsets, sizeof (long), CC_D.num_cards, outf);
	fwrite(CH_D.offsets, sizeof (long), CH_D.num_cards, outf);
	fclose(outf);
	printf("There were %d com. chest and %d chance cards\n", CC_D.num_cards, CH_D.num_cards);
	exit(0);
}

getargs(ac, av)
int	ac;
char	*av[]; {

	if (ac > 2) {
		infile = av[2] ? av[2] : infile;
		if (ac > 3)
			outfile = av[3];
	}
}
/*
 * count the cards
 */
count() {

	reg bool	newline;
	reg DECK	*in_deck;
	reg char	c;

	newline = TRUE;
	in_deck = &CC_D;
	while ((c=getc(inf)) != EOF)
		if (newline && c == '%') {
			newline = FALSE;
			in_deck->num_cards++;
			if (getc(inf) == '-')
				in_deck = &CH_D;
		}
		else
			newline = (c == '\n');
	in_deck->num_cards++;
}
/*
 *	put strings in the file
 */
putem() {

	reg bool	newline;
	reg DECK	*in_deck;
	reg char	c;
	reg int		num;

	in_deck = &CC_D;
	CC_D.num_cards = 1;
	CH_D.num_cards = 0;
	CC_D.offsets[0] = ftell(outf);
	putc(getc(inf), outf);
	putc(getc(inf), outf);
	for (num = 0; (c=getc(inf)) != '\n'; )
		num = num * 10 + (c - '0');
	putw(num, outf);
	newline = FALSE;
	while ((c=getc(inf)) != EOF)
		if (newline && c == '%') {
			putc('\0', outf);
			newline = FALSE;
			if (getc(inf) == '-')
				in_deck = &CH_D;
			while (getc(inf) != '\n')
				continue;
			in_deck->offsets[in_deck->num_cards++] = ftell(outf);
			if ((c=getc(inf)) == EOF)
				break;
			putc(c, outf);
			putc(c = getc(inf), outf);
			for (num = 0; (c=getc(inf)) != EOF && c != '\n'; )
				num = num * 10 + (c - '0');
			putw(num, outf);
		}
		else {
			putc(c, outf);
			newline = (c == '\n');
		}
	putc('\0', outf);
}