xref: /original-bsd/games/bcd/bcd.c (revision 7bd6ee9e)
1 /*
2  * Copyright (c) 1989, 1993
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * Steve Hayman of the Indiana University Computer Science Dept.
7  *
8  * %sccs.include.redist.c%
9  */
10 
11 #ifndef lint
12 static char copyright[] =
13 "@(#) Copyright (c) 1989, 1993\n\
14 	The Regents of the University of California.  All rights reserved.\n";
15 #endif /* not lint */
16 
17 #ifndef lint
18 static char sccsid[] = "@(#)bcd.c	8.2 (Berkeley) 03/20/94";
19 #endif /* not lint */
20 
21 /*
22  * bcd --
23  *
24  * Read one line of standard input and produce something that looks like a
25  * punch card.  An attempt to reimplement /usr/games/bcd.  All I looked at
26  * was the man page.
27  *
28  * I couldn't find a BCD table handy so I wrote a shell script to deduce what
29  * the patterns were that the old bcd was using for each possible 8-bit
30  * character.  These are the results -- the low order 12 bits represent the
31  * holes.  (A 1 bit is a hole.)  These may be wrong, but they match the old
32  * program!
33  *
34  * Steve Hayman
35  * sahayman@iuvax.cs.indiana.edu
36  * 1989 11 30
37  *
38  *
39  * I found an error in the table. The same error is found in the SunOS 4.1.1
40  * version of bcd. It has apparently been around a long time. The error caused
41  * 'Q' and 'R' to have the same punch code. I only noticed the error due to
42  * someone pointing it out to me when the program was used to print a cover
43  * for an APA!  The table was wrong in 4 places. The other error was masked
44  * by the fact that the input is converted to upper case before lookup.
45  *
46  * Dyane Bruce
47  * db@diana.ocunix.on.ca
48  * Nov 5, 1993
49  */
50 
51 #include <sys/types.h>
52 
53 #include <stdio.h>
54 #include <ctype.h>
55 
56 u_short holes[256] = {
57     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
58     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
59     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
60     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
61     0x0,	 0x206,	  0x20a,   0x042,   0x442,   0x222,   0x800,   0x406,
62     0x812,	 0x412,	  0x422,   0xa00,   0x242,   0x400,   0x842,   0x300,
63     0x200,	 0x100,	  0x080,   0x040,   0x020,   0x010,   0x008,   0x004,
64     0x002,	 0x001,	  0x012,   0x40a,   0x80a,   0x212,   0x00a,   0x006,
65     0x022,	 0x900,	  0x880,   0x840,   0x820,   0x810,   0x808,   0x804,
66     0x802,	 0x801,	  0x500,   0x480,   0x440,   0x420,   0x410,   0x408,
67     0x404,	 0x402,	  0x401,   0x280,   0x240,   0x220,   0x210,   0x208,
68     0x204,	 0x202,	  0x201,   0x082,   0x822,   0x600,   0x282,   0x30f,
69     0x900,	 0x880,	  0x840,   0x820,   0x810,   0x808,   0x804,   0x802,
70     0x801,	 0x500,	  0x480,   0x440,   0x420,   0x410,   0x408,   0x404,
71     0x402,	 0x401,	  0x280,   0x240,   0x220,   0x210,   0x208,   0x204,
72     0x202,	 0x201,	  0x082,   0x806,   0x822,   0x600,   0x282,   0x0,
73     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
74     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
75     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
76     0x0,	 0x0,	  0x0,	   0x0,	    0x0,     0x0,     0x0,     0x0,
77     0x206,	 0x20a,	  0x042,   0x442,   0x222,   0x800,   0x406,   0x812,
78     0x412,	 0x422,	  0xa00,   0x242,   0x400,   0x842,   0x300,   0x200,
79     0x100,	 0x080,	  0x040,   0x020,   0x010,   0x008,   0x004,   0x002,
80     0x001,	 0x012,	  0x40a,   0x80a,   0x212,   0x00a,   0x006,   0x022,
81     0x900,	 0x880,	  0x840,   0x820,   0x810,   0x808,   0x804,   0x802,
82     0x801,	 0x500,	  0x480,   0x440,   0x420,   0x410,   0x408,   0x404,
83     0x402,	 0x401,	  0x280,   0x240,   0x220,   0x210,   0x208,   0x204,
84     0x202,	 0x201,	  0x082,   0x806,   0x822,   0x600,   0x282,   0x30f,
85     0x900,	 0x880,	  0x840,   0x820,   0x810,   0x808,   0x804,   0x802,
86     0x801,	 0x500,	  0x480,   0x440,   0x420,   0x410,   0x408,   0x404,
87     0x402,	 0x401,	  0x280,   0x240,   0x220,   0x210,   0x208,   0x204,
88     0x202,	 0x201,	  0x082,   0x806,   0x822,   0x600,   0x282,   0x0
89 };
90 
91 /*
92  * i'th bit of w.
93  */
94 #define	bit(w,i)	((w)&(1<<(i)))
95 
96 int
97 main(argc, argv)
98 	int argc;
99 	char **argv;
100 {
101 	char cardline[80];
102 
103 	/*
104 	 * The original bcd prompts with a "%" when reading from stdin,
105 	 * but this seems kind of silly.  So this one doesn't.
106 	 */
107 
108 	if (argc > 1) {
109 		while (--argc)
110 			printcard(*++argv);
111 	} else
112 		while (fgets(cardline, sizeof(cardline), stdin))
113 			printcard(cardline);
114 	exit(0);
115 }
116 
117 #define	COLUMNS	48
118 
119 printcard(str)
120 	register char *str;
121 {
122 	static char rowchars[] = "   123456789";
123 	register int i, row;
124 	register char *p;
125 	char *index();
126 
127 	/* ruthlessly remove newlines and truncate at 48 characters. */
128 	if ((p = index(str, '\n')))
129 		*p = '\0';
130 
131 	if (strlen(str) > COLUMNS)
132 		str[COLUMNS] = '\0';
133 
134 	/* make string upper case. */
135 	for (p = str; *p; ++p)
136 		if (isascii(*p) && islower(*p))
137 			*p = toupper(*p);
138 
139 	 /* top of card */
140 	putchar(' ');
141 	for (i = 1; i <= COLUMNS; ++i)
142 		putchar('_');
143 	putchar('\n');
144 
145 	/*
146 	 * line of text.  Leave a blank if the character doesn't have
147 	 * a hole pattern.
148 	 */
149 	p = str;
150 	putchar('/');
151 	for (i = 1; *p; i++, p++)
152 		if (holes[*p])
153 			putchar(*p);
154 		else
155 			putchar(' ');
156 	while (i++ <= COLUMNS)
157 		putchar(' ');
158 	putchar('|');
159 	putchar('\n');
160 
161 	/*
162 	 * 12 rows of potential holes; output a ']', which looks kind of
163 	 * like a hole, if the appropriate bit is set in the holes[] table.
164 	 * The original bcd output a '[', a backspace, five control A's,
165 	 * and then a ']'.  This seems a little excessive.
166 	 */
167 	for (row = 0; row <= 11; ++row) {
168 		putchar('|');
169 		for (i = 0, p = str; *p; i++, p++) {
170 			if (bit(holes[*p], 11 - row))
171 				putchar(']');
172 			else
173 				putchar(rowchars[row]);
174 		}
175 		while (i++ < COLUMNS)
176 			putchar(rowchars[row]);
177 		putchar('|');
178 		putchar('\n');
179 	}
180 
181 	/* bottom of card */
182 	putchar('|');
183 	for (i = 1; i <= COLUMNS; i++)
184 		putchar('_');
185 	putchar('|');
186 	putchar('\n');
187 }
188