/****************************************************************************
 * include/regex.h
 *
 * SPDX-License-Identifier: BSD-2-Clause
 * SPDX-FileCopyrightText: 2001-2009 Ville Laurikari <vl@iki.fi>
 *
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
 *  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
 *  HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

#ifndef __INCLUDE_REGEX_H
#define __INCLUDE_REGEX_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <sys/types.h>

#define regoff_t int

typedef struct re_pattern_buffer
{
  size_t re_nsub;
  FAR void *__opaque;
  FAR void *__padding[4];
  size_t __nsub2;
  char __padding2;
} regex_t;

typedef struct
{
  regoff_t rm_so;
  regoff_t rm_eo;
} regmatch_t;

#define RE_DUP_MAX      255

#define REG_EXTENDED    1
#define REG_ICASE       2
#define REG_NEWLINE     4
#define REG_NOSUB       8

#define REG_NOTBOL      1
#define REG_NOTEOL      2

#define REG_OK          0
#define REG_NOMATCH     1
#define REG_BADPAT      2
#define REG_ECOLLATE    3
#define REG_ECTYPE      4
#define REG_EESCAPE     5
#define REG_ESUBREG     6
#define REG_EBRACK      7
#define REG_EPAREN      8
#define REG_EBRACE      9
#define REG_BADBR       10
#define REG_ERANGE      11
#define REG_ESPACE      12
#define REG_BADRPT      13

#define REG_ENOSYS      -1

#ifdef __cplusplus
extern "C"
{
#endif

int regcomp(FAR regex_t *__restrict, FAR const char *__restrict, int);

int regexec(FAR const regex_t * __restrict, FAR const char *__restrict,
            size_t, FAR regmatch_t *__restrict, int);
void regfree(FAR regex_t *);

size_t regerror(int, FAR const regex_t *__restrict, FAR char *__restrict,
                size_t);

#ifdef __cplusplus
}
#endif

#endif /* __INCLUDE_REGEX_H */
