91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/*
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* Copyright (c) 2018 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
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*
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* Change Date: 2024-01-15
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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#pragma once
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/**
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* @file pcre2.h - Utility functions for regular expression matching
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* with the bundled PCRE2 library.
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*/
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#include <maxscale/cdefs.h>
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MXS_BEGIN_DECLS
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#if defined (PCRE2_CODE_UNIT_WIDTH)
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#error PCRE2_CODE_UNIT_WIDTH already defined. Do not define, and include <maxscale/pcre2.h>.
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#else
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#define PCRE2_CODE_UNIT_WIDTH 8
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#endif
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#include <pcre2.h>
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/**
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* Print an error message explaining an error code.
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* @param errorcode value returned by pcre2 functions
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*/
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#define MXS_PCRE2_PRINT_ERROR(errorcode) \
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mxs_pcre2_print_error(errorcode, MXS_MODULE_NAME, __FILE__, __LINE__, __func__)
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typedef enum
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{
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MXS_PCRE2_MATCH,
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MXS_PCRE2_NOMATCH,
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MXS_PCRE2_ERROR
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} mxs_pcre2_result_t;
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mxs_pcre2_result_t mxs_pcre2_substitute(pcre2_code* re,
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const char* subject,
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const char* replace,
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char** dest,
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size_t* size);
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mxs_pcre2_result_t mxs_pcre2_simple_match(const char* pattern,
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const char* subject,
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int options,
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int* error);
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/**
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* Print an error message explaining an error code. Best used through the macro
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* MXS_PCRE2_PRINT_ERROR
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*/
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void mxs_pcre2_print_error(int errorcode,
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const char* module_name,
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const char* filename,
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int line_num,
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const char* func_name);
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/**
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* Check that @c subject is valid. A valid subject matches @c re_match yet does
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* not match @c re_exclude. If an error occurs, an error code is written to
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* @c match_error_out.
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*
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* @param re_match If not NULL, the subject must match this to be valid. If NULL,
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* all inputs are considered valid.
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* @param re_exclude If not NULL, will invalidate a matching subject. Even subjects
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* validated by @c re_match can be invalidated. If NULL, invalidates nothing.
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* @param md PCRE2 match data block
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* @param subject Subject string. Should NOT be an empty string.
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* @param length Length of subject. Can be zero for 0-terminated strings.
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* @param calling_module Which module the function was called from. Can be NULL.
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* Used for log messages.
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*
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* @return True, if subject is considered valid. False if subject is not valid or
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* an error occurred.
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*/
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bool mxs_pcre2_check_match_exclude(pcre2_code* re_match,
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pcre2_code* re_exclude,
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pcre2_match_data* md,
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const char* subject,
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int length,
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const char* calling_module);
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MXS_END_DECLS
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