1 /* $OpenBSD: isctype.c,v 1.11 2005/08/08 08:05:34 espie Exp $ */
2 /*
3 * Copyright (c) 1989 The Regents of the University of California.
4 * All rights reserved.
5 * (c) UNIX System Laboratories, Inc.
6 * All or some portions of this file are derived from material licensed
7 * to the University of California by American Telephone and Telegraph
8 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
9 * the permission of UNIX System Laboratories, Inc.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #define _ANSI_LIBRARY
37 #include <ctype.h>
38 #include <stdio.h>
39
40 #undef isalnum
41 int
isalnum(int c)42 isalnum(int c)
43 {
44 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_U|_L|_N)));
45 }
46
47 #undef isalpha
48 int
isalpha(int c)49 isalpha(int c)
50 {
51 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_U|_L)));
52 }
53
54 #undef isblank
55 int
isblank(int c)56 isblank(int c)
57 {
58 return (c == ' ' || c == '\t');
59 }
60
61 #undef iscntrl
62 int
iscntrl(int c)63 iscntrl(int c)
64 {
65 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _C));
66 }
67
68 #undef isdigit
69 int
isdigit(int c)70 isdigit(int c)
71 {
72 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _N));
73 }
74
75 #undef isgraph
76 int
isgraph(int c)77 isgraph(int c)
78 {
79 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_P|_U|_L|_N)));
80 }
81
82 #undef islower
83 int
islower(int c)84 islower(int c)
85 {
86 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _L));
87 }
88
89 #undef isprint
90 int
isprint(int c)91 isprint(int c)
92 {
93 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_P|_U|_L|_N|_B)));
94 }
95
96 #undef ispunct
97 int
ispunct(int c)98 ispunct(int c)
99 {
100 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _P));
101 }
102
103 #undef isspace
104 int
isspace(int c)105 isspace(int c)
106 {
107 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _S));
108 }
109
110 #undef isupper
111 int
isupper(int c)112 isupper(int c)
113 {
114 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & _U));
115 }
116
117 #undef isxdigit
118 int
isxdigit(int c)119 isxdigit(int c)
120 {
121 return (c == EOF ? 0 : ((_ctype_ + 1)[(unsigned char)c] & (_N|_X)));
122 }
123
124 #undef isascii
125 int
isascii(int c)126 isascii(int c)
127 {
128 return ((unsigned int)c <= 0177);
129 }
130
131 #undef toascii
132 int
toascii(int c)133 toascii(int c)
134 {
135 return (c & 0177);
136 }
137
138 #undef _toupper
139 int
_toupper(int c)140 _toupper(int c)
141 {
142 return (c - 'a' + 'A');
143 }
144
145 #undef _tolower
146 int
_tolower(int c)147 _tolower(int c)
148 {
149 return (c - 'A' + 'a');
150 }
151