1/*	$NetBSD: ppt.c,v 1.18 2009/08/12 08:24:20 dholland 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
40static char sccsid[] = "@(#)ppt.c	8.1 (Berkeley) 5/31/93";
41#else
42__RCSID("$NetBSD: ppt.c,v 1.18 2009/08/12 08:24:20 dholland 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
54static void putppt(int);
55static int getppt(const char *);
56
57__dead static void
58usage(void)
59{
60	extern char *__progname;
61	fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
62	exit(1);
63}
64
65int
66main(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
129static void
130putppt(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
147static int
148getppt(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