/*

 * Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

/*

 * This version of ctype.h provides a standardised and platform

 * independent implementation that supports seven bit ASCII characters.

 * The specific intent is to not pass extended ASCII characters (> 127)

 * even if the host operating system would.

 *

 * There is EBCDIC support included for machines which use this.  However,

 * there are a number of concerns about how well EBCDIC is supported

 * throughout the rest of the source code.  Refer to issue #4154 for

 * details.

 */

#ifndef OSSL_CRYPTO_CTYPE_H

# define OSSL_CRYPTO_CTYPE_H

# define CTYPE_MASK_lower       0x1

# define CTYPE_MASK_upper       0x2

# define CTYPE_MASK_digit       0x4

# define CTYPE_MASK_space       0x8

# define CTYPE_MASK_xdigit      0x10

# define CTYPE_MASK_blank       0x20

# define CTYPE_MASK_cntrl       0x40

# define CTYPE_MASK_graph       0x80

# define CTYPE_MASK_print       0x100

# define CTYPE_MASK_punct       0x200

# define CTYPE_MASK_base64      0x400

# define CTYPE_MASK_asn1print   0x800

# define CTYPE_MASK_alpha   (CTYPE_MASK_lower | CTYPE_MASK_upper)

# define CTYPE_MASK_alnum   (CTYPE_MASK_alpha | CTYPE_MASK_digit)

/*

 * The ascii mask assumes that any other classification implies that

 * the character is ASCII and that there are no ASCII characters

 * that aren't in any of the classifications.

 *

 * This assumption holds at the moment, but it might not in the future.

 */

# define CTYPE_MASK_ascii   (~0)

# ifdef CHARSET_EBCDIC

int ossl_toascii(int c);

int ossl_fromascii(int c);

# else

#  define ossl_toascii(c)       (c)

#  define ossl_fromascii(c)     (c)

# endif

int ossl_ctype_check(int c, unsigned int mask);

int ossl_tolower(int c);

int ossl_toupper(int c);

int ascii_isdigit(const char inchar);

# define ossl_isalnum(c)        (ossl_ctype_check((c), CTYPE_MASK_alnum))

# define ossl_isalpha(c)        (ossl_ctype_check((c), CTYPE_MASK_alpha))

# ifdef CHARSET_EBCDIC

# define ossl_isascii(c)        (ossl_ctype_check((c), CTYPE_MASK_ascii))

# else

# define ossl_isascii(c)        (((c) & ~127) == 0)

# endif

# define ossl_isblank(c)        (ossl_ctype_check((c), CTYPE_MASK_blank))

# define ossl_iscntrl(c)        (ossl_ctype_check((c), CTYPE_MASK_cntrl))

# define ossl_isdigit(c)        (ossl_ctype_check((c), CTYPE_MASK_digit))

# define ossl_isgraph(c)        (ossl_ctype_check((c), CTYPE_MASK_graph))

# define ossl_islower(c)        (ossl_ctype_check((c), CTYPE_MASK_lower))

# define ossl_isprint(c)        (ossl_ctype_check((c), CTYPE_MASK_print))

# define ossl_ispunct(c)        (ossl_ctype_check((c), CTYPE_MASK_punct))

# define ossl_isspace(c)        (ossl_ctype_check((c), CTYPE_MASK_space))

# define ossl_isupper(c)        (ossl_ctype_check((c), CTYPE_MASK_upper))

# define ossl_isxdigit(c)       (ossl_ctype_check((c), CTYPE_MASK_xdigit))

# define ossl_isbase64(c)       (ossl_ctype_check((c), CTYPE_MASK_base64))

# define ossl_isasn1print(c)    (ossl_ctype_check((c), CTYPE_MASK_asn1print))

#endif