Daan De Meyer
75db32dcd8
To avoid having "#if HAVE_PCRE2" all throughout the code, let's confine the pcre2 header specific stuff to pcre2-util.c. Instead of exposing all the individual symbols from pcre2, let's only expose three high level functions that do all we need: - pcre2_pattern_compile(): Compile the regex - pcre2_pattern_matches(): Check if the compiled regex matches a message - pcre2_pattern_free(): Free the compiled regex We expose the compiled pcre2 pattern (which is of type pcre2_code *) as a void pointer to avoid having to include pcre2.h in all code where we work with compiled pcre2 patterns. For readability, we typedef void to pcre2_pattern and use that as the type specifier for compiled pcre2 patterns.
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "macro.h"
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#if HAVE_PCRE2
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#define PCRE2_CODE_UNIT_WIDTH 8
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#include <pcre2.h>
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extern pcre2_match_data* (*sym_pcre2_match_data_create)(uint32_t, pcre2_general_context *);
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extern void (*sym_pcre2_match_data_free)(pcre2_match_data *);
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extern void (*sym_pcre2_code_free)(pcre2_code *);
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extern pcre2_code* (*sym_pcre2_compile)(PCRE2_SPTR, PCRE2_SIZE, uint32_t, int *, PCRE2_SIZE *, pcre2_compile_context *);
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extern int (*sym_pcre2_get_error_message)(int, PCRE2_UCHAR *, PCRE2_SIZE);
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extern int (*sym_pcre2_match)(const pcre2_code *, PCRE2_SPTR, PCRE2_SIZE, PCRE2_SIZE, uint32_t, pcre2_match_data *, pcre2_match_context *);
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extern PCRE2_SIZE* (*sym_pcre2_get_ovector_pointer)(pcre2_match_data *);
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DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(pcre2_match_data*, sym_pcre2_match_data_free, NULL);
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DEFINE_TRIVIAL_CLEANUP_FUNC_FULL(pcre2_code*, sym_pcre2_code_free, NULL);
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#else
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typedef struct {} pcre2_code;
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#endif
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typedef enum {
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PATTERN_COMPILE_CASE_AUTO,
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PATTERN_COMPILE_CASE_SENSITIVE,
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PATTERN_COMPILE_CASE_INSENSITIVE,
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_PATTERN_COMPILE_CASE_MAX,
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_PATTERN_COMPILE_CASE_INVALID = -EINVAL,
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} PatternCompileCase;
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int pattern_compile_and_log(const char *pattern, PatternCompileCase case_, pcre2_code **ret);
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int pattern_matches_and_log(pcre2_code *compiled_pattern, const char *message, size_t size, size_t *ret_ovec);
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void *pattern_free(pcre2_code *p);
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DEFINE_TRIVIAL_CLEANUP_FUNC(pcre2_code*, pattern_free);
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int dlopen_pcre2(void);
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