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/* $NetBSD: regex.h,v 1.9 1998/12/09 20:58:55 drochner Exp $ */

/*-
* Copyright (c) 1992 Henry Spencer.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Henry Spencer of the University of Toronto.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)regex.h 8.2 (Berkeley) 1/3/94
*/

#ifndef _REGEX_H_
#define _REGEX_H_

#include <sys/cdefs.h>
#include <sys/types.h>

/* types */
#if 1 /* __LIBC12_SOURCE__ - should go away */
typedef off_t regoff_t;
#else
typedef size_t regoff_t;
#endif

typedef struct {
int re_magic;
size_t re_nsub; /* number of parenthesized subexpressions */
const char *re_endp; /* end pointer for REG_PEND */
struct re_guts *re_g; /* none of your business :-) */
} regex_t;

typedef struct {
regoff_t rm_so; /* start of match */
regoff_t rm_eo; /* end of match */
} regmatch_t;

/* regcomp() flags */
#define REG_BASIC 0000
#define REG_EXTENDED 0001
#define REG_ICASE 0002
#define REG_NOSUB 0004
#define REG_NEWLINE 0010
#define REG_NOSPEC 0020
#define REG_PEND 0040
#define REG_DUMP 0200

/* regerror() flags */
#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_EMPTY 14
#define REG_ASSERT 15
#define REG_INVARG 16
#define REG_ENOSYS 17
#define REG_ATOI 255 /* convert name to number (!) */
#define REG_ITOA 0400 /* convert number to name (!) */

/* regexec() flags */
#define REG_NOTBOL 00001
#define REG_NOTEOL 00002
#define REG_STARTEND 00004
#define REG_TRACE 00400 /* tracing of execution */
#define REG_LARGE 01000 /* force large representation */
#define REG_BACKR 02000 /* force use of backref code */

__BEGIN_DECLS
int regcomp __P((regex_t *, const char *, int));
size_t regerror __P((int, const regex_t *, char *, size_t));
int regexec __P((const regex_t *,
const char *, size_t, regmatch_t [], int));
void regfree __P((regex_t *));
__END_DECLS

#endif /* !_REGEX_H_ */
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