2 * Copyright (c) 2012 Dag-Erling Smørgrav
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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14 * products derived from this software without specific prior written
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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29 * $Id: openpam_ctype.h 666 2013-03-17 14:22:17Z des $
32 #ifndef OPENPAM_CTYPE_H_INCLUDED
33 #define OPENPAM_CTYPE_H_INCLUDED
36 * Evaluates to non-zero if the argument is a digit.
38 #define is_digit(ch) \
39 (ch >= '0' && ch <= '9')
42 * Evaluates to non-zero if the argument is a hex digit.
44 #define is_xdigit(ch) \
45 ((ch >= '0' && ch <= '9') || \
46 (ch >= 'a' && ch <= 'f') || \
47 (ch >= 'A' && ch <= 'F'))
50 * Evaluates to non-zero if the argument is an uppercase letter.
52 #define is_upper(ch) \
53 (ch >= 'A' && ch <= 'Z')
56 * Evaluates to non-zero if the argument is a lowercase letter.
58 #define is_lower(ch) \
59 (ch >= 'a' && ch <= 'z')
62 * Evaluates to non-zero if the argument is a letter.
64 #define is_letter(ch) \
65 (is_upper(ch) || is_lower(ch))
68 * Evaluates to non-zero if the argument is a linear whitespace character.
69 * For the purposes of this macro, the definition of linear whitespace is
70 * extended to include the form feed and carraige return characters.
73 (ch == ' ' || ch == '\t' || ch == '\f' || ch == '\r')
76 * Evaluates to non-zero if the argument is a whitespace character.
79 (is_lws(ch) || ch == '\n')
82 * Evaluates to non-zero if the argument is a printable ASCII character.
83 * Assumes that the execution character set is a superset of ASCII.
86 (ch >= '!' && ch <= '~')
89 * Returns non-zero if the argument belongs to the POSIX Portable Filename
90 * Character Set. Assumes that the execution character set is a superset
94 (is_digit(ch) || is_letter(ch) || \
95 ch == '.' || ch == '_' || ch == '-')