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      1 /*	$NetBSD: ppt.c,v 1.19 2011/08/29 20:30:37 joerg 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\
     35  The Regents of the University of California.  All rights reserved.");
     36 #endif /* not lint */
     37 
     38 #ifndef lint
     39 #if 0
     40 static char sccsid[] = "@(#)ppt.c	8.1 (Berkeley) 5/31/93";
     41 #else
     42 __RCSID("$NetBSD: ppt.c,v 1.19 2011/08/29 20:30:37 joerg Exp $");
     43 #endif
     44 #endif /* not lint */
     45 
     46 #include <err.h>
     47 #include <stdio.h>
     48 #include <stdlib.h>
     49 #include <string.h>
     50 #include <unistd.h>
     51 
     52 #define	EDGE	"___________"
     53 
     54 static void putppt(int);
     55 static int getppt(const char *);
     56 
     57 __dead static void
     58 usage(void)
     59 {
     60 	extern char *__progname;
     61 	fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
     62 	exit(1);
     63 }
     64 
     65 int
     66 main(int argc, char **argv)
     67 {
     68 	char *p, buf[132];
     69 	int c, start, neednl, dflag;
     70 
     71 	/* Revoke setgid privileges */
     72 	setgid(getgid());
     73 
     74 	dflag = 0;
     75 	while ((c = getopt(argc, argv, "dh")) != -1)
     76 		switch(c) {
     77 		case 'd':
     78 			dflag = 1;
     79 			break;
     80 		case 'h':
     81 		case '?':
     82 		default:
     83 			usage();
     84 		}
     85 	argc -= optind;
     86 	argv += optind;
     87 
     88 	if (dflag) {
     89 		if (argc > 0)
     90 			usage();
     91 
     92 		start = 0;
     93 		neednl = 0;
     94 		while (fgets(buf, sizeof(buf), stdin) != NULL) {
     95 			c = getppt(buf);
     96 			if (c < 0) {
     97 				if (start) {
     98 					/* lost sync? */
     99 					if (neednl)
    100 						putchar('\n');
    101 					exit(0);
    102 				} else
    103 					continue;
    104 			}
    105 			start = 1;
    106 			putchar(c);
    107 			neednl = (c != '\n');
    108 		}
    109 		if (!feof(stdin))
    110 			err(1, "fgets");
    111 		if (neednl)
    112 			putchar('\n');
    113 	} else {
    114 		(void) puts(EDGE);
    115 		if (argc > 0)
    116 			while ((p = *argv++)) {
    117 				for (; *p; ++p)
    118 					putppt((int)*p);
    119 				if ((*(argv)))
    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(int c)
    131 {
    132 	int i;
    133 
    134 	(void) putchar('|');
    135 	for (i = 7; i >= 0; i--) {
    136 		if (i == 2)
    137 			(void) putchar('.');	/* feed hole */
    138 		if ((c&(1<<i)) != 0)
    139 			(void) putchar('o');
    140 		else
    141 			(void) putchar(' ');
    142 	}
    143 	(void) putchar('|');
    144 	(void) putchar('\n');
    145 }
    146 
    147 static int
    148 getppt(const char *buf)
    149 {
    150 	const char *p = strchr(buf, '.');
    151 	int c;
    152 
    153 	if (p == NULL)
    154 		return (-1);
    155 
    156 	c = 0;
    157 	if (p[ 3] != ' ')
    158 		c |= 0001;
    159 	if (p[ 2] != ' ')
    160 		c |= 0002;
    161 	if (p[ 1] != ' ')
    162 		c |= 0004;
    163 	if (p[-1] != ' ')
    164 		c |= 0010;
    165 	if (p[-2] != ' ')
    166 		c |= 0020;
    167 	if (p[-3] != ' ')
    168 		c |= 0040;
    169 	if (p[-4] != ' ')
    170 		c |= 0100;
    171 	if (p[-5] != ' ')
    172 		c |= 0200;
    173 
    174 	return (c);
    175 }
    176