1 /* $NetBSD: bcd.c,v 1.17 2009/08/12 05:21:28 dholland Exp $ */
2
3 /*
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Steve Hayman of the Indiana University Computer Science Dept.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 #ifndef lint
37 __COPYRIGHT("@(#) Copyright (c) 1989, 1993\
38 The Regents of the University of California. All rights reserved.");
39 #endif /* not lint */
40
41 #ifndef lint
42 #if 0
43 static char sccsid[] = "@(#)bcd.c 8.2 (Berkeley) 3/20/94";
44 #else
45 __RCSID("$NetBSD: bcd.c,v 1.17 2009/08/12 05:21:28 dholland Exp $");
46 #endif
47 #endif /* not lint */
48
49 /*
50 * bcd --
51 *
52 * Read one line of standard input and produce something that looks like a
53 * punch card. An attempt to reimplement /usr/games/bcd. All I looked at
54 * was the man page.
55 *
56 * I couldn't find a BCD table handy so I wrote a shell script to deduce what
57 * the patterns were that the old bcd was using for each possible 8-bit
58 * character. These are the results -- the low order 12 bits represent the
59 * holes. (A 1 bit is a hole.) These may be wrong, but they match the old
60 * program!
61 *
62 * Steve Hayman
63 * sahayman@iuvax.cs.indiana.edu
64 * 1989 11 30
65 *
66 *
67 * I found an error in the table. The same error is found in the SunOS 4.1.1
68 * version of bcd. It has apparently been around a long time. The error caused
69 * 'Q' and 'R' to have the same punch code. I only noticed the error due to
70 * someone pointing it out to me when the program was used to print a cover
71 * for an APA! The table was wrong in 4 places. The other error was masked
72 * by the fact that the input is converted to upper case before lookup.
73 *
74 * Dyane Bruce
75 * db@diana.ocunix.on.ca
76 * Nov 5, 1993
77 */
78
79 #include <sys/types.h>
80
81 #include <stdio.h>
82 #include <stdlib.h>
83 #include <string.h>
84 #include <ctype.h>
85 #include <unistd.h>
86
87 static const u_short holes[256] = {
88 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
89 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
90 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
91 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
92 0x0, 0x206, 0x20a, 0x042, 0x442, 0x222, 0x800, 0x406,
93 0x812, 0x412, 0x422, 0xa00, 0x242, 0x400, 0x842, 0x300,
94 0x200, 0x100, 0x080, 0x040, 0x020, 0x010, 0x008, 0x004,
95 0x002, 0x001, 0x012, 0x40a, 0x80a, 0x212, 0x00a, 0x006,
96 0x022, 0x900, 0x880, 0x840, 0x820, 0x810, 0x808, 0x804,
97 0x802, 0x801, 0x500, 0x480, 0x440, 0x420, 0x410, 0x408,
98 0x404, 0x402, 0x401, 0x280, 0x240, 0x220, 0x210, 0x208,
99 0x204, 0x202, 0x201, 0x082, 0x822, 0x600, 0x282, 0x30f,
100 0x900, 0x880, 0x840, 0x820, 0x810, 0x808, 0x804, 0x802,
101 0x801, 0x500, 0x480, 0x440, 0x420, 0x410, 0x408, 0x404,
102 0x402, 0x401, 0x280, 0x240, 0x220, 0x210, 0x208, 0x204,
103 0x202, 0x201, 0x082, 0x806, 0x822, 0x600, 0x282, 0x0,
104 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
105 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
106 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
107 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
108 0x206, 0x20a, 0x042, 0x442, 0x222, 0x800, 0x406, 0x812,
109 0x412, 0x422, 0xa00, 0x242, 0x400, 0x842, 0x300, 0x200,
110 0x100, 0x080, 0x040, 0x020, 0x010, 0x008, 0x004, 0x002,
111 0x001, 0x012, 0x40a, 0x80a, 0x212, 0x00a, 0x006, 0x022,
112 0x900, 0x880, 0x840, 0x820, 0x810, 0x808, 0x804, 0x802,
113 0x801, 0x500, 0x480, 0x440, 0x420, 0x410, 0x408, 0x404,
114 0x402, 0x401, 0x280, 0x240, 0x220, 0x210, 0x208, 0x204,
115 0x202, 0x201, 0x082, 0x806, 0x822, 0x600, 0x282, 0x30f,
116 0x900, 0x880, 0x840, 0x820, 0x810, 0x808, 0x804, 0x802,
117 0x801, 0x500, 0x480, 0x440, 0x420, 0x410, 0x408, 0x404,
118 0x402, 0x401, 0x280, 0x240, 0x220, 0x210, 0x208, 0x204,
119 0x202, 0x201, 0x082, 0x806, 0x822, 0x600, 0x282, 0x0
120 };
121
122 /*
123 * i'th bit of w.
124 */
125 #define bit(w,i) ((w)&(1<<(i)))
126
127 static void printcard(char *);
128
129 int
main(int argc,char ** argv)130 main(int argc, char **argv)
131 {
132 char cardline[80];
133
134 /* revoke setgid privileges */
135 setgid(getgid());
136
137 /*
138 * The original bcd prompts with a "%" when reading from stdin,
139 * but this seems kind of silly. So this one doesn't.
140 */
141
142 if (argc > 1) {
143 while (--argc)
144 printcard(*++argv);
145 } else
146 while (fgets(cardline, sizeof(cardline), stdin))
147 printcard(cardline);
148 exit(0);
149 }
150
151 #define COLUMNS 48
152
153 static void
printcard(char * str)154 printcard(char *str)
155 {
156 static const char rowchars[] = " 123456789";
157 int i, row;
158 char *p;
159
160 /* ruthlessly remove newlines and truncate at 48 characters. */
161 if ((p = strchr(str, '\n')))
162 *p = '\0';
163
164 if (strlen(str) > COLUMNS)
165 str[COLUMNS] = '\0';
166
167 /* make string upper case. */
168 for (p = str; *p; ++p)
169 if (isascii((unsigned char)*p) && islower((unsigned char)*p))
170 *p = toupper((unsigned char) *p);
171
172 /* top of card */
173 putchar(' ');
174 for (i = 1; i <= COLUMNS; ++i)
175 putchar('_');
176 putchar('\n');
177
178 /*
179 * line of text. Leave a blank if the character doesn't have
180 * a hole pattern.
181 */
182 p = str;
183 putchar('/');
184 for (i = 1; *p; i++, p++)
185 if (holes[(unsigned char)*p])
186 putchar(*p);
187 else
188 putchar(' ');
189 while (i++ <= COLUMNS)
190 putchar(' ');
191 putchar('|');
192 putchar('\n');
193
194 /*
195 * 12 rows of potential holes; output a ']', which looks kind of
196 * like a hole, if the appropriate bit is set in the holes[] table.
197 * The original bcd output a '[', a backspace, five control A's,
198 * and then a ']'. This seems a little excessive.
199 */
200 for (row = 0; row <= 11; ++row) {
201 putchar('|');
202 for (i = 0, p = str; *p; i++, p++) {
203 if (bit(holes[(unsigned char)*p], 11 - row))
204 putchar(']');
205 else
206 putchar(rowchars[row]);
207 }
208 while (i++ < COLUMNS)
209 putchar(rowchars[row]);
210 putchar('|');
211 putchar('\n');
212 }
213
214 /* bottom of card */
215 putchar('|');
216 for (i = 1; i <= COLUMNS; i++)
217 putchar('_');
218 putchar('|');
219 putchar('\n');
220 }
221