1 /*
2 FUNCTION
3 	<<unctrl>>---get printable representation of a character
4 
5 INDEX
6 	unctrl
7 INDEX
8 	unctrllen
9 
10 SYNOPSIS
11 	#include <unctrl.h>
12 	char *unctrl(int <[c]>);
13 	int unctrllen(int <[c]>);
14 
15 DESCRIPTION
16 <<unctrl>> is a macro which returns the printable representation of <[c]>
17 as a string.
18 <<unctrllen>> is a macro which returns the length of the printable
19 representation of <[c]>.
20 
21 RETURNS
22 <<unctrl>> returns a string of the printable representation of <[c]>.
23 
24 <<unctrllen>> returns the length of the string which is the printable
25 representation of <[c]>.
26 
27 PORTABILITY
28 <<unctrl>> and <<unctrllen>> are not ANSI C.
29 
30 No supporting OS subroutines are required.
31 */
32 
33 /*
34  * Copyright (c) 1981, 1993
35  *	The Regents of the University of California.  All rights reserved.
36  *
37  * Redistribution and use in source and binary forms, with or without
38  * modification, are permitted provided that the following conditions
39  * are met:
40  * 1. Redistributions of source code must retain the above copyright
41  *    notice, this list of conditions and the following disclaimer.
42  * 2. Redistributions in binary form must reproduce the above copyright
43  *    notice, this list of conditions and the following disclaimer in the
44  *    documentation and/or other materials provided with the distribution.
45  * 3. Neither the name of the University nor the names of its contributors
46  *    may be used to endorse or promote products derived from this software
47  *    without specific prior written permission.
48  *
49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59  * SUCH DAMAGE.
60  */
61 
62 #include <_ansi.h>
63 
64 #if defined(LIBC_SCCS) && !defined(lint)
65 static char sccsid[] = "@(#)unctrl.c	8.1 (Berkeley) 6/4/93";
66 #endif /* LIBC_SCCS and not lint */
67 
68 const char * const __unctrl[256] = {
69 	"^@",  "^A",  "^B",  "^C",  "^D",  "^E",  "^F",  "^G",
70 	"^H",  "^I",  "^J",  "^K",  "^L",  "^M",  "^N",  "^O",
71 	"^P",  "^Q",  "^R",  "^S",  "^T",  "^U",  "^V",  "^W",
72 	"^X",  "^Y",  "^Z",  "^[", "^\\",  "^]",  "^~",  "^_",
73 	 " ",   "!",  "\"",   "#",   "$",   "%",   "&",   "'",
74 	 "(",   ")",   "*",   "+",   ",",   "-",   ".",   "/",
75 	 "0",   "1",   "2",   "3",   "4",   "5",   "6",   "7",
76 	 "8",   "9",   ":",   ";",   "<",   "=",   ">",   "?",
77 	 "@",   "A",   "B",   "C",   "D",   "E",   "F",   "G",
78 	 "H",   "I",   "J",   "K",   "L",   "M",   "N",   "O",
79 	 "P",   "Q",   "R",   "S",   "T",   "U",   "V",   "W",
80 	 "X",   "Y",   "Z",   "[",  "\\",   "]",   "^",   "_",
81 	 "`",   "a",   "b",   "c",   "d",   "e",   "f",   "g",
82 	 "h",   "i",   "j",   "k",   "l",   "m",   "n",   "o",
83 	 "p",   "q",   "r",   "s",   "t",   "u",   "v",   "w",
84 	 "x",   "y",   "z",   "{",   "|",   "}",   "~",   "^?",
85 
86 	"0x80", "0x81",	"0x82", "0x83", "0x84", "0x85", "0x86", "0x87",
87 	"0x88", "0x89",	"0x8a", "0x8b", "0x8c", "0x8d", "0x8e", "0x8f",
88 	"0x90", "0x91",	"0x92", "0x93", "0x94", "0x95", "0x96", "0x97",
89 	"0x98", "0x99",	"0x9a", "0x9b", "0x9c", "0x9d", "0x9e", "0x9f",
90 	"0xa0", "0xa1",	"0xa2", "0xa3", "0xa4", "0xa5", "0xa6", "0xa7",
91 	"0xa8", "0xa9",	"0xaa", "0xab", "0xac", "0xad", "0xae", "0xaf",
92 	"0xb0", "0xb1",	"0xb2", "0xb3", "0xb4", "0xb5", "0xb6", "0xb7",
93 	"0xb8", "0xb9",	"0xba", "0xbb", "0xbc", "0xbd", "0xbe", "0xbf",
94 	"0xc0", "0xc1",	"0xc2", "0xc3", "0xc4", "0xc5", "0xc6", "0xc7",
95 	"0xc8", "0xc9",	"0xca", "0xcb", "0xcc", "0xcd", "0xce", "0xcf",
96 	"0xd0", "0xd1",	"0xd2", "0xd3", "0xd4", "0xd5", "0xd6", "0xd7",
97 	"0xd8", "0xd9",	"0xda", "0xdb", "0xdc", "0xdd", "0xde", "0xdf",
98 	"0xe0", "0xe1",	"0xe2", "0xe3", "0xe4", "0xe5", "0xe6", "0xe7",
99 	"0xe8", "0xe9",	"0xea", "0xeb", "0xec", "0xed", "0xee", "0xef",
100 	"0xf0", "0xf1",	"0xf2", "0xf3", "0xf4", "0xf5", "0xf6", "0xf7",
101 	"0xf8", "0xf9",	"0xfa", "0xfb", "0xfc", "0xfd", "0xfe", "0xff",
102 };
103 
104 const char __unctrllen[256] = {
105 	2, 2, 2, 2, 2, 2, 2, 2,
106 	2, 2, 2, 2, 2, 2, 2, 2,
107 	2, 2, 2, 2, 2, 2, 2, 2,
108 	2, 2, 2, 2, 2, 2, 2, 2,
109 	1, 1, 1, 1, 1, 1, 1, 1,
110 	1, 1, 1, 1, 1, 1, 1, 1,
111 	1, 1, 1, 1, 1, 1, 1, 1,
112 	1, 1, 1, 1, 1, 1, 1, 1,
113 	1, 1, 1, 1, 1, 1, 1, 1,
114 	1, 1, 1, 1, 1, 1, 1, 1,
115 	1, 1, 1, 1, 1, 1, 1, 1,
116 	1, 1, 1, 1, 1, 1, 1, 1,
117 	1, 1, 1, 1, 1, 1, 1, 1,
118 	1, 1, 1, 1, 1, 1, 1, 1,
119 	1, 1, 1, 1, 1, 1, 1, 1,
120 	1, 1, 1, 1, 1, 1, 1, 2,
121 	4, 4, 4, 4, 4, 4, 4, 4,
122 	4, 4, 4, 4, 4, 4, 4, 4,
123 	4, 4, 4, 4, 4, 4, 4, 4,
124 	4, 4, 4, 4, 4, 4, 4, 4,
125 	4, 4, 4, 4, 4, 4, 4, 4,
126 	4, 4, 4, 4, 4, 4, 4, 4,
127 	4, 4, 4, 4, 4, 4, 4, 4,
128 	4, 4, 4, 4, 4, 4, 4, 4,
129 	4, 4, 4, 4, 4, 4, 4, 4,
130 	4, 4, 4, 4, 4, 4, 4, 4,
131 	4, 4, 4, 4, 4, 4, 4, 4,
132 	4, 4, 4, 4, 4, 4, 4, 4,
133 	4, 4, 4, 4, 4, 4, 4, 4,
134 	4, 4, 4, 4, 4, 4, 4, 4,
135 	4, 4, 4, 4, 4, 4, 4, 4,
136 	4, 4, 4, 4, 4, 4, 4, 4,
137 };
138