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 14 typedef enum { 15 SURROGATE_MIN = 0xd800UL, 16 SURROGATE_MAX = 0xdfffUL, 17 UNICODE_MAX = 0x10ffffUL, 18 UNICODE_LIMIT 19 } UNICODE_CONSTANTS; 20 21 static ossl_unused ossl_inline int is_unicode_surrogate(unsigned long value) 22 { 23 return value >= SURROGATE_MIN && value <= SURROGATE_MAX; 24 } 25 26 static 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