xref: /freebsd/include/regex.h (revision f5147e312f43a9050468de539aeafa072caa1a60)
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  * $FreeBSD$
37  */
38 
39 #ifndef _REGEX_H_
40 #define	_REGEX_H_
41 
42 #include <sys/cdefs.h>
43 #include <sys/_types.h>
44 
45 /* types */
46 typedef	__off_t		regoff_t;
47 
48 #ifndef _SIZE_T_DECLARED
49 typedef	__size_t	size_t;
50 #define	_SIZE_T_DECLARED
51 #endif
52 
53 typedef struct {
54 	int re_magic;
55 	size_t re_nsub;		/* number of parenthesized subexpressions */
56 	const char *re_endp;	/* end pointer for REG_PEND */
57 	struct re_guts *re_g;	/* none of your business :-) */
58 } regex_t;
59 
60 typedef struct {
61 	regoff_t rm_so;		/* start of match */
62 	regoff_t rm_eo;		/* end of match */
63 } regmatch_t;
64 
65 /* regcomp() flags */
66 #define	REG_BASIC	0000
67 #define	REG_EXTENDED	0001
68 #define	REG_ICASE	0002
69 #define	REG_NOSUB	0004
70 #define	REG_NEWLINE	0010
71 #define	REG_NOSPEC	0020
72 #define	REG_PEND	0040
73 #define	REG_DUMP	0200
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
106 int	regcomp(regex_t * __restrict, const char * __restrict, int);
107 size_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  */
113 int	regexec(const regex_t * __restrict, const char * __restrict, size_t,
114 	    regmatch_t * __restrict, int);
115 void	regfree(regex_t *);
116 __END_DECLS
117 
118 #endif /* !_REGEX_H_ */
119