Line data    Source code

       1              : /* SPDX-FileCopyrightText: Copyright 2026 Cozens Software Solutions Limited
       2              :  * SPDX-License-Identifier: PolyForm-Noncommercial-1.0.0 OR LicenseRef-PolyForm-Internal-Use-1.0.0 OR LicenseRef-COSOSO-Commercial
       3              :  */
       4              : 
       5              : #ifndef SOLIDSYSLOGUTF8_H
       6              : #define SOLIDSYSLOGUTF8_H
       7              : 
       8              : #include "SolidSyslogExternC.h"
       9              : 
      10              : #include <stdbool.h>
      11              : 
      12              : SOLIDSYSLOG_EXTERN_C_BEGIN
      13              : 
      14              :     /* Byte-level UTF-8 lead and continuation classifiers per RFC 3629 section 4.
      15              :      * These cover the disjoint top-bit patterns only - overlong / surrogate /
      16              :      * above-Unicode validity is composed on top by callers that need it. */
      17              : 
      18       577717 :     static inline bool SolidSyslogUtf8_IsAsciiByte(char byte)
      19              :     {
      20       577717 :         return ((unsigned char) byte & 0x80U) == 0U;
      21              :     }
      22              : 
      23          140 :     static inline bool SolidSyslogUtf8_IsContinuationByte(char byte)
      24              :     {
      25          140 :         return ((unsigned char) byte & 0xC0U) == 0x80U;
      26              :     }
      27              : 
      28        59763 :     static inline bool SolidSyslogUtf8_IsTwoByteLead(char byte)
      29              :     {
      30        59763 :         return ((unsigned char) byte & 0xE0U) == 0xC0U;
      31              :     }
      32              : 
      33        97287 :     static inline bool SolidSyslogUtf8_IsThreeByteLead(char byte)
      34              :     {
      35        97287 :         return ((unsigned char) byte & 0xF0U) == 0xE0U;
      36              :     }
      37              : 
      38       134708 :     static inline bool SolidSyslogUtf8_IsFourByteLead(char byte)
      39              :     {
      40       134708 :         return ((unsigned char) byte & 0xF8U) == 0xF0U;
      41              :     }
      42              : 
      43              : SOLIDSYSLOG_EXTERN_C_END
      44              : 
      45              : #endif /* SOLIDSYSLOGUTF8_H */