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ppt.c revision 1.14 
      1 /*	$NetBSD: ppt.c,v 1.14 2002/11/26 23:07:36 atatat 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 1.14 2002/11/26 23:07:36 atatat Exp $");
     47 #endif
     48 #endif /* not lint */
     49 
     50 #include <err.h>
     51 #include <stdio.h>
     52 #include <stdlib.h>
     53 #include <string.h>
     54 #include <unistd.h>
     55 
     56 #define	EDGE	"___________"
     57 
     58        void	usage __P((void));
     59 	int	main __P((int, char *[]));
     60 static void	putppt __P((int));
     61 	int	getppt __P((const char *));
     62 
     63 void
     64 usage(void)
     65 {
     66 	extern char *__progname;
     67 	fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
     68 	exit(1);
     69 }
     70 
     71 int
     72 main(argc, argv)
     73 	int argc;
     74 	char **argv;
     75 {
     76 	char *p, buf[132];
     77 	int c, start, neednl, dflag;
     78 
     79 	/* Revoke setgid privileges */
     80 	setgid(getgid());
     81 
     82 	dflag = 0;
     83 	while ((c = getopt(argc, argv, "dh")) != -1)
     84 		switch(c) {
     85 		case 'd':
     86 			dflag = 1;
     87 			break;
     88 		case 'h':
     89 		case '?':
     90 		default:
     91 			usage();
     92 		}
     93 	argc -= optind;
     94 	argv += optind;
     95 
     96 	if (dflag) {
     97 		if (argc > 0)
     98 			usage();
     99 
    100 		start = 0;
    101 		neednl = 0;
    102 		while (fgets(buf, sizeof(buf), stdin) != NULL) {
    103 			c = getppt(buf);
    104 			if (c < 0) {
    105 				if (start) {
    106 					/* lost sync? */
    107 					if (neednl)
    108 						putchar('\n');
    109 					exit(0);
    110 				} else
    111 					continue;
    112 			}
    113 			start = 1;
    114 			putchar(c);
    115 			neednl = (c != '\n');
    116 		}
    117 		if (!feof(stdin))
    118 			err(1, "fgets");
    119 		if (neednl)
    120 			putchar('\n');
    121 	} else {
    122 		(void) puts(EDGE);
    123 		if (argc > 0)
    124 			while ((p = *argv++)) {
    125 				for (; *p; ++p)
    126 					putppt((int)*p);
    127 				if ((*(argv)))
    128 					putppt((int)' ');
    129 			}
    130 		else while ((c = getchar()) != EOF)
    131 			putppt(c);
    132 		(void) puts(EDGE);
    133 	}
    134 	exit(0);
    135 }
    136 
    137 static void
    138 putppt(c)
    139 	int c;
    140 {
    141 	int i;
    142 
    143 	(void) putchar('|');
    144 	for (i = 7; i >= 0; i--) {
    145 		if (i == 2)
    146 			(void) putchar('.');	/* feed hole */
    147 		if ((c&(1<<i)) != 0)
    148 			(void) putchar('o');
    149 		else
    150 			(void) putchar(' ');
    151 	}
    152 	(void) putchar('|');
    153 	(void) putchar('\n');
    154 }
    155 
    156 int
    157 getppt(const char *buf)
    158 {
    159 	const char *p = strchr(buf, '.');
    160 	int c;
    161 
    162 	if (p == NULL)
    163 		return (-1);
    164 
    165 	c = 0;
    166 	if (p[ 3] != ' ')
    167 		c |= 0001;
    168 	if (p[ 2] != ' ')
    169 		c |= 0002;
    170 	if (p[ 1] != ' ')
    171 		c |= 0004;
    172 	if (p[-1] != ' ')
    173 		c |= 0010;
    174 	if (p[-2] != ' ')
    175 		c |= 0020;
    176 	if (p[-3] != ' ')
    177 		c |= 0040;
    178 	if (p[-4] != ' ')
    179 		c |= 0100;
    180 	if (p[-5] != ' ')
    181 		c |= 0200;
    182 
    183 	return (c);
    184 }
    185