1/*
2 * Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10#ifndef OSSL_INTERNAL_UNICODE_H
11# define OSSL_INTERNAL_UNICODE_H
12# pragma once
13
14typedef enum {
15    SURROGATE_MIN = 0xd800UL,
16    SURROGATE_MAX = 0xdfffUL,
17    UNICODE_MAX = 0x10ffffUL,
18    UNICODE_LIMIT
19} UNICODE_CONSTANTS;
20
21static ossl_unused ossl_inline int is_unicode_surrogate(unsigned long value)
22{
23    return value >= SURROGATE_MIN && value <= SURROGATE_MAX;
24}
25
26static ossl_unused ossl_inline int is_unicode_valid(unsigned long value)
27{
28    return value <= UNICODE_MAX && !is_unicode_surrogate(value);
29}
30
31#endif
32