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/** @file
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __WSUTIL_REGEX_H__
#define __WSUTIL_REGEX_H__
#include <wireshark.h>
#ifdef __cplusplus
extern "C" {
#endif
struct _ws_regex;
typedef struct _ws_regex ws_regex_t;
WS_DLL_PUBLIC ws_regex_t *
ws_regex_compile(const char *patt, char **errmsg);
#define WS_REGEX_CASELESS (1U << 0)
/* By default UTF-8 is off. This option also prevents it from being
* turned on using a pattern option. */
#define WS_REGEX_NEVER_UTF (1U << 1)
WS_DLL_PUBLIC ws_regex_t *
ws_regex_compile_ex(const char *patt, ssize_t size, char **errmsg, unsigned flags);
/** Matches a null-terminated subject string. */
WS_DLL_PUBLIC bool
ws_regex_matches(const ws_regex_t *re, const char *subj);
/** Matches a subject string length in 8 bit code units. */
WS_DLL_PUBLIC bool
ws_regex_matches_length(const ws_regex_t *re,
const char *subj, ssize_t subj_length);
/** Returns start and end position of the matched substring.
*
* pos_vect[0] is first codepoint in the matched substring.
* pos_vect[1] is the next to last codepoint in the matched substring.
* pos_vect[1] - pos_vect[0] is the matched substring length.
*/
WS_DLL_PUBLIC bool
ws_regex_matches_pos(const ws_regex_t *re,
const char *subj, ssize_t subj_length,
size_t pos_vect[2]);
WS_DLL_PUBLIC void
ws_regex_free(ws_regex_t *re);
WS_DLL_PUBLIC const char *
ws_regex_pattern(const ws_regex_t *re);
#ifdef __cplusplus
}
#endif
#endif /* __WSUTIL_REGEX_H__ */
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