2 * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 * This version of ctype.h provides a standardised and platform
12 * independent implementation that supports seven bit ASCII characters.
13 * The specific intent is to not pass extended ASCII characters (> 127)
14 * even if the host operating system would.
16 * There is EBCDIC support included for machines which use this. However,
17 * there are a number of concerns about how well EBCDIC is supported
18 * throughout the rest of the source code. Refer to issue #4154 for
21 #ifndef OSSL_CRYPTO_CTYPE_H
22 # define OSSL_CRYPTO_CTYPE_H
25 # define CTYPE_MASK_lower 0x1
26 # define CTYPE_MASK_upper 0x2
27 # define CTYPE_MASK_digit 0x4
28 # define CTYPE_MASK_space 0x8
29 # define CTYPE_MASK_xdigit 0x10
30 # define CTYPE_MASK_blank 0x20
31 # define CTYPE_MASK_cntrl 0x40
32 # define CTYPE_MASK_graph 0x80
33 # define CTYPE_MASK_print 0x100
34 # define CTYPE_MASK_punct 0x200
35 # define CTYPE_MASK_base64 0x400
36 # define CTYPE_MASK_asn1print 0x800
38 # define CTYPE_MASK_alpha (CTYPE_MASK_lower | CTYPE_MASK_upper)
39 # define CTYPE_MASK_alnum (CTYPE_MASK_alpha | CTYPE_MASK_digit)
42 * The ascii mask assumes that any other classification implies that
43 * the character is ASCII and that there are no ASCII characters
44 * that aren't in any of the classifications.
46 * This assumption holds at the moment, but it might not in the future.
48 # define CTYPE_MASK_ascii (~0)
50 # ifdef CHARSET_EBCDIC
51 int ossl_toascii(int c);
52 int ossl_fromascii(int c);
54 # define ossl_toascii(c) (c)
55 # define ossl_fromascii(c) (c)
57 int ossl_ctype_check(int c, unsigned int mask);
58 int ossl_tolower(int c);
59 int ossl_toupper(int c);
61 int ossl_ascii_isdigit(const char inchar);
63 # define ossl_isalnum(c) (ossl_ctype_check((c), CTYPE_MASK_alnum))
64 # define ossl_isalpha(c) (ossl_ctype_check((c), CTYPE_MASK_alpha))
65 # ifdef CHARSET_EBCDIC
66 # define ossl_isascii(c) (ossl_ctype_check((c), CTYPE_MASK_ascii))
68 # define ossl_isascii(c) (((c) & ~127) == 0)
70 # define ossl_isblank(c) (ossl_ctype_check((c), CTYPE_MASK_blank))
71 # define ossl_iscntrl(c) (ossl_ctype_check((c), CTYPE_MASK_cntrl))
72 # define ossl_isdigit(c) (ossl_ctype_check((c), CTYPE_MASK_digit))
73 # define ossl_isgraph(c) (ossl_ctype_check((c), CTYPE_MASK_graph))
74 # define ossl_islower(c) (ossl_ctype_check((c), CTYPE_MASK_lower))
75 # define ossl_isprint(c) (ossl_ctype_check((c), CTYPE_MASK_print))
76 # define ossl_ispunct(c) (ossl_ctype_check((c), CTYPE_MASK_punct))
77 # define ossl_isspace(c) (ossl_ctype_check((c), CTYPE_MASK_space))
78 # define ossl_isupper(c) (ossl_ctype_check((c), CTYPE_MASK_upper))
79 # define ossl_isxdigit(c) (ossl_ctype_check((c), CTYPE_MASK_xdigit))
80 # define ossl_isbase64(c) (ossl_ctype_check((c), CTYPE_MASK_base64))
81 # define ossl_isasn1print(c) (ossl_ctype_check((c), CTYPE_MASK_asn1print))