1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
14 */
15
16 /*
17 * ASCII versions of ctype character classification functions. This avoids
18 * pulling in the entire locale framework that is in libc.
19 */
20
21 int
isdigit(int c)22 isdigit(int c)
23 {
24 return ((c >= '0' && c <= '9') ? 1 : 0);
25 }
26
27 int
isupper(int c)28 isupper(int c)
29 {
30 return ((c >= 'A' && c <= 'Z') ? 1 : 0);
31 }
32
33
34 int
islower(int c)35 islower(int c)
36 {
37 return ((c >= 'a' && c <= 'z') ? 1 : 0);
38 }
39
40 int
isspace(int c)41 isspace(int c)
42 {
43 return (((c == ' ') || (c == '\t') || (c == '\r') || (c == '\n') ||
44 (c == '\v') || (c == '\f')) ? 1 : 0);
45 }
46
47 int
isxdigit(int c)48 isxdigit(int c)
49 {
50 return ((isdigit(c) || (c >= 'A' && c <= 'F') ||
51 (c >= 'a' && c <= 'f')) ? 1 : 0);
52 }
53
54 int
isalpha(int c)55 isalpha(int c)
56 {
57 return ((isupper(c) || islower(c)) ? 1 : 0);
58 }
59
60
61 int
isalnum(int c)62 isalnum(int c)
63 {
64 return ((isalpha(c) || isdigit(c)) ? 1 : 0);
65 }
66
67 int
ispunct(int c)68 ispunct(int c)
69 {
70 return (((c >= '!') && (c <= '/')) ||
71 ((c >= ':') && (c <= '@')) ||
72 ((c >= '[') && (c <= '`')) ||
73 ((c >= '{') && (c <= '~')));
74 }
75
76 int
iscntrl(int c)77 iscntrl(int c)
78 {
79 return ((c < 0x20) || (c == 0x7f));
80 }
81
82 int
isprint(int c)83 isprint(int c)
84 {
85 /*
86 * Almost the inverse of iscntrl, but be careful that c > 0x7f
87 * returns false for everything.
88 */
89 return ((c >= ' ') && (c <= '~'));
90 }
91
92 int
isgraph(int c)93 isgraph(int c)
94 {
95 /* isgraph is like is print, but excludes <space> */
96 return ((c >= '!') && (c <= '~'));
97 }
98