openpam_ctype.h revision 1.3 
1/*	$NetBSD: openpam_ctype.h,v 1.3 2017/05/06 19:50:09 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2012-2014 Dag-Erling Sm��rgrav
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote
16 *    products derived from this software without specific prior written
17 *    permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $OpenPAM: openpam_ctype.h 938 2017-04-30 21:34:42Z des $
32 */
33
34#ifndef OPENPAM_CTYPE_H_INCLUDED
35#define OPENPAM_CTYPE_H_INCLUDED
36
37/*
38 * Evaluates to non-zero if the argument is a digit.
39 */
40#define is_digit(ch)				\
41	(ch >= '0' && ch <= '9')
42
43/*
44 * Evaluates to non-zero if the argument is a hex digit.
45 */
46#define is_xdigit(ch)				\
47	((ch >= '0' && ch <= '9') ||		\
48	 (ch >= 'a' && ch <= 'f') ||		\
49	 (ch >= 'A' && ch <= 'F'))
50
51/*
52 * Evaluates to non-zero if the argument is an uppercase letter.
53 */
54#define is_upper(ch)				\
55	(ch >= 'A' && ch <= 'Z')
56
57/*
58 * Evaluates to non-zero if the argument is a lowercase letter.
59 */
60#define is_lower(ch)				\
61	(ch >= 'a' && ch <= 'z')
62
63/*
64 * Evaluates to non-zero if the argument is a letter.
65 */
66#define is_letter(ch)				\
67	(is_upper(ch) || is_lower(ch))
68
69/*
70 * Evaluates to non-zero if the argument is a linear whitespace character.
71 * For the purposes of this macro, the definition of linear whitespace is
72 * extended to include the form feed and carraige return characters.
73 */
74#define is_lws(ch)				\
75	(ch == ' ' || ch == '\t' || ch == '\f' || ch == '\r')
76
77/*
78 * Evaluates to non-zero if the argument is a whitespace character.
79 */
80#define is_ws(ch)				\
81	(is_lws(ch) || ch == '\n')
82
83/*
84 * Evaluates to non-zero if the argument is a printable ASCII character.
85 * Assumes that the execution character set is a superset of ASCII.
86 */
87#define is_p(ch) \
88	(ch >= '!' && ch <= '~')
89
90/*
91 * Returns non-zero if the argument belongs to the POSIX Portable Filename
92 * Character Set.  Assumes that the execution character set is a superset
93 * of ASCII.
94 */
95#define is_pfcs(ch)				\
96	(is_digit(ch) || is_letter(ch)  ||	\
97	 ch == '.' || ch == '_' || ch == '-')
98
99#endif
100