1/*-
  2 * SPDX-License-Identifier: BSD-3-Clause
  3 *
  4 * Copyright (c) 1992 Henry Spencer.
  5 * Copyright (c) 1992, 1993
  6 *	The Regents of the University of California.  All rights reserved.
  7 *
  8 * This code is derived from software contributed to Berkeley by
  9 * Henry Spencer of the University of Toronto.
 10 *
 11 * Redistribution and use in source and binary forms, with or without
 12 * modification, are permitted provided that the following conditions
 13 * are met:
 14 * 1. Redistributions of source code must retain the above copyright
 15 *    notice, this list of conditions and the following disclaimer.
 16 * 2. Redistributions in binary form must reproduce the above copyright
 17 *    notice, this list of conditions and the following disclaimer in the
 18 *    documentation and/or other materials provided with the distribution.
 19 * 3. Neither the name of the University nor the names of its contributors
 20 *    may be used to endorse or promote products derived from this software
 21 *    without specific prior written permission.
 22 *
 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 33 * SUCH DAMAGE.
 34 *
 35 *	@(#)regex.h	8.2 (Berkeley) 1/3/94
 36 */
 37
 38#ifndef _REGEX_H_
 39#define	_REGEX_H_
 40
 41#include <sys/cdefs.h>
 42#include <sys/_types.h>
 43
 44/* types */
 45typedef	__off_t		regoff_t;
 46
 47#ifndef _SIZE_T_DECLARED
 48typedef	__size_t	size_t;
 49#define	_SIZE_T_DECLARED
 50#endif
 51
 52typedef struct {
 53	int re_magic;
 54	size_t re_nsub;		/* number of parenthesized subexpressions */
 55	const char *re_endp;	/* end pointer for REG_PEND */
 56	struct re_guts *re_g;	/* none of your business :-) */
 57} regex_t;
 58
 59typedef struct {
 60	regoff_t rm_so;		/* start of match */
 61	regoff_t rm_eo;		/* end of match */
 62} regmatch_t;
 63
 64/* regcomp() flags */
 65#define	REG_BASIC	0000
 66#define	REG_EXTENDED	0001
 67#define	REG_ICASE	0002
 68#define	REG_NOSUB	0004
 69#define	REG_NEWLINE	0010
 70#define	REG_NOSPEC	0020
 71#define	REG_PEND	0040
 72#define	REG_DUMP	0200
 73#define	REG_POSIX	0400	/* only POSIX-compliant regex (libregex) */
 74
 75/* regerror() flags */
 76#define	REG_ENOSYS	(-1)
 77#define	REG_NOMATCH	 1
 78#define	REG_BADPAT	 2
 79#define	REG_ECOLLATE	 3
 80#define	REG_ECTYPE	 4
 81#define	REG_EESCAPE	 5
 82#define	REG_ESUBREG	 6
 83#define	REG_EBRACK	 7
 84#define	REG_EPAREN	 8
 85#define	REG_EBRACE	 9
 86#define	REG_BADBR	10
 87#define	REG_ERANGE	11
 88#define	REG_ESPACE	12
 89#define	REG_BADRPT	13
 90#define	REG_EMPTY	14
 91#define	REG_ASSERT	15
 92#define	REG_INVARG	16
 93#define	REG_ILLSEQ	17
 94#define	REG_ATOI	255	/* convert name to number (!) */
 95#define	REG_ITOA	0400	/* convert number to name (!) */
 96
 97/* regexec() flags */
 98#define	REG_NOTBOL	00001
 99#define	REG_NOTEOL	00002
100#define	REG_STARTEND	00004
101#define	REG_TRACE	00400	/* tracing of execution */
102#define	REG_LARGE	01000	/* force large representation */
103#define	REG_BACKR	02000	/* force use of backref code */
104
105__BEGIN_DECLS
106int	regcomp(regex_t * __restrict, const char * __restrict, int);
107size_t	regerror(int, const regex_t * __restrict, char * __restrict, size_t);
108/*
109 * XXX forth parameter should be `regmatch_t [__restrict]', but isn't because
110 * of a bug in GCC 3.2 (when -std=c99 is specified) which perceives this as a
111 * syntax error.
112 */
113int	regexec(const regex_t * __restrict, const char * __restrict, size_t,
114	    regmatch_t * __restrict, int);
115void	regfree(regex_t *);
116__END_DECLS
117
118#endif /* !_REGEX_H_ */