minix/games/ppt/ppt.c

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/* $NetBSD: ppt.c,v 1.19 2011/08/29 20:30:37 joerg Exp $ */
/*
* Copyright (c) 1988, 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
__COPYRIGHT("@(#) Copyright (c) 1988, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)ppt.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: ppt.c,v 1.19 2011/08/29 20:30:37 joerg Exp $");
#endif
#endif /* not lint */
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define EDGE "___________"
static void putppt(int);
static int getppt(const char *);
__dead static void
usage(void)
{
extern char *__progname;
fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
exit(1);
}
int
main(int argc, char **argv)
{
char *p, buf[132];
int c, start, neednl, dflag;
/* Revoke setgid privileges */
setgid(getgid());
dflag = 0;
while ((c = getopt(argc, argv, "dh")) != -1)
switch(c) {
case 'd':
dflag = 1;
break;
case 'h':
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (dflag) {
if (argc > 0)
usage();
start = 0;
neednl = 0;
while (fgets(buf, sizeof(buf), stdin) != NULL) {
c = getppt(buf);
if (c < 0) {
if (start) {
/* lost sync? */
if (neednl)
putchar('\n');
exit(0);
} else
continue;
}
start = 1;
putchar(c);
neednl = (c != '\n');
}
if (!feof(stdin))
err(1, "fgets");
if (neednl)
putchar('\n');
} else {
(void) puts(EDGE);
if (argc > 0)
while ((p = *argv++)) {
for (; *p; ++p)
putppt((int)*p);
if ((*(argv)))
putppt((int)' ');
}
else while ((c = getchar()) != EOF)
putppt(c);
(void) puts(EDGE);
}
exit(0);
}
static void
putppt(int c)
{
int i;
(void) putchar('|');
for (i = 7; i >= 0; i--) {
if (i == 2)
(void) putchar('.'); /* feed hole */
if ((c&(1<<i)) != 0)
(void) putchar('o');
else
(void) putchar(' ');
}
(void) putchar('|');
(void) putchar('\n');
}
static int
getppt(const char *buf)
{
const char *p = strchr(buf, '.');
int c;
if (p == NULL)
return (-1);
c = 0;
if (p[ 3] != ' ')
c |= 0001;
if (p[ 2] != ' ')
c |= 0002;
if (p[ 1] != ' ')
c |= 0004;
if (p[-1] != ' ')
c |= 0010;
if (p[-2] != ' ')
c |= 0020;
if (p[-3] != ' ')
c |= 0040;
if (p[-4] != ' ')
c |= 0100;
if (p[-5] != ' ')
c |= 0200;
return (c);
}