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ppt.c revision 1.10 
      1 /*	$NetBSD: ppt.c,v 1.10 2002/11/26 03:47:46 kim Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988, 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
     39 	The Regents of the University of California.  All rights reserved.\n");
     40 #endif /* not lint */
     41 
     42 #ifndef lint
     43 #if 0
     44 static char sccsid[] = "@(#)ppt.c	8.1 (Berkeley) 5/31/93";
     45 #else
     46 __RCSID("$NetBSD: ppt.c,v 1.10 2002/11/26 03:47:46 kim Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <stdio.h>
     51 #include <stdlib.h>
     52 #include <string.h>
     53 #include <unistd.h>
     54 
     55 #define	EDGE	"___________"
     56 
     57 	int	main __P((int, char *[]));
     58 static void	putppt __P((int));
     59 	int	getppt __P((const char *));
     60 
     61 void
     62 usage(void)
     63 {
     64 	extern char *__progname;
     65 	fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
     66 	exit(1);
     67 }
     68 
     69 int
     70 main(argc, argv)
     71 	int argc;
     72 	char **argv;
     73 {
     74 	char *p, buf[132];
     75 	int c, start, dflag;
     76 
     77 	/* Revoke setgid privileges */
     78 	setgid(getgid());
     79 
     80 	while ((c = getopt(argc, argv, "dh")) != -1)
     81 		switch(c) {
     82 		case 'd':
     83 			dflag = 1;
     84 			break;
     85 		case '?': case 'h':
     86 		default:
     87 			usage();
     88 		}
     89 	argc -= optind;
     90 	argv += optind;
     91 
     92 	if (dflag) {
     93 		if (argc > 0)
     94 			usage();
     95 
     96 		start = 0;
     97 		while (fgets(buf, sizeof(buf), stdin) != NULL) {
     98 			c = getppt(buf);
     99 			if (c < 0) {
    100 				if (start) {
    101 					/* lost sync */
    102 					putchar('\n');
    103 					exit(0);
    104 				} else
    105 					continue;
    106 			}
    107 			start = 1;
    108 			putchar(c);
    109 		}
    110 		if (!feof(stdin))
    111 			err(1, "fgets");
    112 		putchar('\n');
    113 	} else {
    114 		(void) puts(EDGE);
    115 		if (argc > 1)
    116 			while ((p = *++argv)) {
    117 				for (; *p; ++p)
    118 					putppt((int)*p);
    119 				if ((*(argv + 1)))
    120 					putppt((int)' ');
    121 			}
    122 		else while ((c = getchar()) != EOF)
    123 			putppt(c);
    124 		(void) puts(EDGE);
    125 	}
    126 	exit(0);
    127 }
    128 
    129 static void
    130 putppt(c)
    131 	int c;
    132 {
    133 	int i;
    134 
    135 	(void) putchar('|');
    136 	for (i = 7; i >= 0; i--) {
    137 		if (i == 2)
    138 			(void) putchar('.');	/* feed hole */
    139 		if ((c&(1<<i)) != 0)
    140 			(void) putchar('o');
    141 		else
    142 			(void) putchar(' ');
    143 	}
    144 	(void) putchar('|');
    145 	(void) putchar('\n');
    146 }
    147 
    148 int
    149 getppt(const char *buf)
    150 {
    151 	const char *p = strchr(buf, '.');
    152 	int c;
    153 
    154 	if (p == NULL)
    155 		return (-1);
    156 
    157 	c = 0;
    158 	if (p[ 3] != ' ')
    159 		c |= 0001;
    160 	if (p[ 2] != ' ')
    161 		c |= 0002;
    162 	if (p[ 1] != ' ')
    163 		c |= 0004;
    164 	if (p[-1] != ' ')
    165 		c |= 0010;
    166 	if (p[-2] != ' ')
    167 		c |= 0020;
    168 	if (p[-3] != ' ')
    169 		c |= 0040;
    170 	if (p[-4] != ' ')
    171 		c |= 0100;
    172 	if (p[-5] != ' ')
    173 		c |= 0200;
    174 
    175 	return (c);
    176 }
    177