1 /*-
2  * Copyright (c) 1992 Henry Spencer.
3  * Copyright (c) 1992, 1993
4  *	The Regents of the University of California.  All rights reserved.
5  *
6  * This code is derived from software contributed to Berkeley by
7  * Henry Spencer of the University of Toronto.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  *	@(#)regex.h	8.2 (Berkeley) 1/3/94
34  * $FreeBSD: src/include/regex.h,v 1.4 2002/03/23 17:24:53 imp Exp $
35  */
36 
37 #ifndef _REGEX_H_
38 #define	_REGEX_H_
39 
40 #include <sys/cdefs.h>
41 
42 /* types */
43 typedef ptrdiff_t regoff_t;
44 
45 typedef struct {
46 	int re_magic;
47 	size_t re_nsub;		/* number of parenthesized subexpressions */
48 	__const char *re_endp;	/* end pointer for REG_PEND */
49 	struct re_guts *re_g;	/* none of your business :-) */
50 } regex_t;
51 
52 typedef struct {
53 	regoff_t rm_so;		/* start of match */
54 	regoff_t rm_eo;		/* end of match */
55 } regmatch_t;
56 
57 /* regcomp() flags */
58 #define	REG_BASIC	0000
59 #define	REG_EXTENDED	0001
60 #define	REG_ICASE	0002
61 #define	REG_NOSUB	0004
62 #define	REG_NEWLINE	0010
63 #define	REG_NOSPEC	0020
64 #define	REG_PEND	0040
65 #define	REG_DUMP	0200
66 
67 /* regerror() flags */
68 #define	REG_NOMATCH	 1
69 #define	REG_BADPAT	 2
70 #define	REG_ECOLLATE	 3
71 #define	REG_ECTYPE	 4
72 #define	REG_EESCAPE	 5
73 #define	REG_ESUBREG	 6
74 #define	REG_EBRACK	 7
75 #define	REG_EPAREN	 8
76 #define	REG_EBRACE	 9
77 #define	REG_BADBR	10
78 #define	REG_ERANGE	11
79 #define	REG_ESPACE	12
80 #define	REG_BADRPT	13
81 #define	REG_EMPTY	14
82 #define	REG_ASSERT	15
83 #define	REG_INVARG	16
84 #define	REG_ATOI	255	/* convert name to number (!) */
85 #define	REG_ITOA	0400	/* convert number to name (!) */
86 
87 /* regexec() flags */
88 #define	REG_NOTBOL	00001
89 #define	REG_NOTEOL	00002
90 #define	REG_STARTEND	00004
91 #define	REG_TRACE	00400	/* tracing of execution */
92 #define	REG_LARGE	01000	/* force large representation */
93 #define	REG_BACKR	02000	/* force use of backref code */
94 
95 __BEGIN_DECLS
96 int	regcomp(regex_t *__restrict, const char *__restrict, int);
97 size_t	regerror(int, const regex_t *__restrict, char *__restrict, size_t);
98 int	regexec(const regex_t *__restrict, const char *__restrict,
99 			size_t, regmatch_t [__restrict], int);
100 void	regfree(regex_t *);
101 __END_DECLS
102 
103 #endif /* !_REGEX_H_ */
104