n_pcre.h

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/*
 * Nilorea Library
 * Copyright (C) 2005-2026 Castagnier Mickael
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef __NILOREA_PCRE_HELPERS__
#define __NILOREA_PCRE_HELPERS__
 
#ifdef __cplusplus
extern "C" {
#endif
 
/* PCRE2 uses a different API than legacy PCRE (pcre.h).
 * We use the 8-bit library (char / UTF-8 style strings). */
#ifndef PCRE2_CODE_UNIT_WIDTH
#define PCRE2_CODE_UNIT_WIDTH 8
#endif
#include <pcre2.h>
 
#include <nilorea/n_common.h>
#include <nilorea/n_str.h>
 
/* Compatibility aliases.
 * The legacy PCRE (pcre.h) used PCRE_* option names. PCRE2 uses PCRE2_*.
 * If your existing code still passes PCRE_* flags to npcre_new(), these
 * aliases let it keep compiling.
 */
#ifndef PCRE_CASELESS
#define PCRE_CASELESS PCRE2_CASELESS
#endif
#ifndef PCRE_MULTILINE
#define PCRE_MULTILINE PCRE2_MULTILINE
#endif
#ifndef PCRE_DOTALL
#define PCRE_DOTALL PCRE2_DOTALL
#endif
#ifndef PCRE_EXTENDED
#define PCRE_EXTENDED PCRE2_EXTENDED
#endif
#ifndef PCRE_ANCHORED
#define PCRE_ANCHORED PCRE2_ANCHORED
#endif
#ifndef PCRE_UTF8
#define PCRE_UTF8 PCRE2_UTF
#endif
#ifndef PCRE_UCP
#define PCRE_UCP PCRE2_UCP
#endif
 
/* pcre2_substring_list_free() had a const PCRE2_UCHAR** argument up to 10.41,
 * then it was changed to PCRE2_UCHAR** in 10.42 to fix the mismatch with
 * pcre2_substring_list(). Use void* as intermediate to satisfy both. */
#ifdef PCRE2_LIST_FREE_CONST
#define PCRE2_LIST_FREE_CAST(x) ((const PCRE2_UCHAR8**)(void*)(x))
#else
#define PCRE2_LIST_FREE_CAST(x) ((PCRE2_UCHAR8**)(void*)(x))
#endif
 
#define npcre_print_error(__LEVEL__, __rc__)                                 \
    do {                                                                     \
        _npcre_print_error(__LEVEL__, __FILE__, __func__, __LINE__, __rc__); \
    } while (0)
 
typedef struct N_PCRE {
    char* regexp_str;
    pcre2_code* regexp;
    pcre2_match_data* match_data;
    PCRE2_UCHAR8** match_list;
    int captured;
    pthread_rwlock_t rwlock;
} N_PCRE;
 
N_PCRE* npcre_new(char* str, int flags);
int npcre_delete(N_PCRE** pcre);
int npcre_clean_match(N_PCRE* pcre);
int npcre_match(char* str, N_PCRE* pcre);
int npcre_match_capture(char* str, N_PCRE* pcre);
N_STR* npcre_replace(N_PCRE* pcre, const char* subject, size_t subject_len, const char* replacement);
int _npcre_print_error(int LOG_LEVEL, const char* file, const char* func, int line, int rc);
 
#ifdef __cplusplus
}
#endif
/* #ifndef __NILOREA_PCRE_HELPERS__ */
#endif