include/internal/unicode.h

   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