1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Copyright 1989, 1994 by Mortice Kern Systems Inc.
29 * All rights reserved.
30 */
31 /*
32 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
33 * Use is subject to license terms.
34 */
35
36 #ifndef _REGEX_H
37 #define _REGEX_H
38
39 #include <sys/feature_tests.h>
40 #include <sys/types.h>
41
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45
46
47 /*
48 * wchar_t is a built-in type in standard C++ and as such is not
49 * defined here when using standard C++. However, the GNU compiler
50 * fixincludes utility nonetheless creates its own version of this
51 * header for use by gcc and g++. In that version it adds a redundant
52 * guard for __cplusplus. To avoid the creation of a gcc/g++ specific
53 * header we need to include the following magic comment:
54 *
55 * we must use the C++ compiler's type
56 *
57 * The above comment should not be removed or changed until GNU
58 * gcc/fixinc/inclhack.def is updated to bypass this header.
59 */
60 #if !defined(__cplusplus) || (__cplusplus < 199711L && !defined(__GNUG__))
61 #ifndef _WCHAR_T
62 #define _WCHAR_T
63 #if defined(_LP64)
64 typedef int wchar_t;
65 #else
66 typedef long wchar_t;
67 #endif
68 #endif /* !_WCHAR_T */
69 #endif /* !defined(__cplusplus) ... */
70
71 typedef ssize_t regoff_t;
72
73 /* regcomp flags */
74 #define REG_BASIC 0x00
75 #define REG_EXTENDED 0x01 /* Use Extended Regular Expressions */
76 #define REG_NEWLINE 0x08 /* Treat \n as regular character */
77 #define REG_ICASE 0x04 /* Ignore case in match */
78 #define REG_NOSUB 0x02 /* Don't set subexpression */
79 #define REG_EGREP 0x1000 /* running as egrep(1) */
80
81 /* non-standard flags - note that most of these are not supported */
82 #define REG_DELIM 0x10 /* string[0] is delimiter */
83 #define REG_DEBUG 0x20 /* Debug recomp and regexec */
84 #define REG_ANCHOR 0x40 /* Implicit ^ and $ */
85 #define REG_WORDS 0x80 /* \< and \> match word boundries */
86
87 /* FreeBSD additions */
88 #define REG_DUMP 0x2000
89 #define REG_PEND 0x4000
90 #define REG_NOSPEC 0x8000
91 #define REG_STARTEND 0x10000
92
93 /* internal flags */
94 #define REG_MUST 0x100 /* check for regmust substring */
95
96 /* regexec flags */
97 #define REG_NOTBOL 0x200 /* string is not BOL */
98 #define REG_NOTEOL 0x400 /* string has no EOL */
99 #define REG_NOOPT 0x800 /* don't do regmust optimization */
100
101 /* regcomp and regexec return codes */
102 #define REG_OK 0 /* success (non-standard) */
103 #define REG_NOMATCH 1 /* regexec failed to match */
104 #define REG_ECOLLATE 2 /* invalid collation element ref. */
105 #define REG_EESCAPE 3 /* trailing \ in pattern */
106 #define REG_ENEWLINE 4 /* \n found before end of pattern */
107 #define REG_ENSUB 5 /* more than 9 \( \) pairs (OBS) */
108 #define REG_ESUBREG 6 /* number in \[0-9] invalid */
109 #define REG_EBRACK 7 /* [ ] imbalance */
110 #define REG_EPAREN 8 /* ( ) imbalance */
111 #define REG_EBRACE 9 /* \{ \} imbalance */
112 #define REG_ERANGE 10 /* invalid endpoint in range */
113 #define REG_ESPACE 11 /* no memory for compiled pattern */
114 #define REG_BADRPT 12 /* invalid repetition */
115 #define REG_ECTYPE 13 /* invalid char-class type */
116 #define REG_BADPAT 14 /* syntax error */
117 #define REG_BADBR 15 /* \{ \} contents bad */
118 #define REG_EFATAL 16 /* internal error, not POSIX.2 */
119 #define REG_ECHAR 17 /* invalid mulitbyte character */
120 #define REG_STACK 18 /* backtrack stack overflow */
121 #define REG_ENOSYS 19 /* function not supported (XPG4) */
122 #define REG__LAST 20 /* first unused code */
123 #define REG_EBOL 21 /* ^ anchor and not BOL */
124 #define REG_EEOL 22 /* $ anchor and not EOL */
125 #define _REG_BACKREF_MAX 9 /* Max # of subexp. backreference */
126
127 typedef struct { /* regcomp() data saved for regexec() */
128 size_t re_nsub; /* # of subexpressions in RE pattern */
129
130 /*
131 * Internal use only. Note that any changes to this structure
132 * have to preserve sizing, as it is baked into applications.
133 */
134 struct re_guts *re_g;
135 int re_magic;
136 const char *re_endp;
137
138 /* here for compat */
139 size_t re_len; /* # wchar_t chars in compiled pattern */
140 struct _regex_ext_t *re_sc; /* for binary compatibility */
141 } regex_t;
142
143 /* subexpression positions */
144 typedef struct {
145 #ifdef __STDC__
146 const char *rm_sp, *rm_ep; /* Start pointer, end pointer */
147 #else
148 char *rm_sp, *rm_ep; /* Start pointer, end pointer */
149 #endif
150 regoff_t rm_so, rm_eo; /* Start offset, end offset */
151 int rm_ss, rm_es; /* Used internally */
152 } regmatch_t;
153
154
155 /*
156 * Additional API and structs to support regular expression manipulations
157 * on wide characters.
158 */
159
160 #if defined(__STDC__)
161
162 extern int regcomp(regex_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD, int);
163 extern int regexec(const regex_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD,
164 size_t, regmatch_t *_RESTRICT_KYWD, int);
165 extern size_t regerror(int, const regex_t *_RESTRICT_KYWD,
166 char *_RESTRICT_KYWD, size_t);
167 extern void regfree(regex_t *);
168
169 #else /* defined(__STDC__) */
170
171 extern int regcomp();
172 extern int regexec();
173 extern size_t regerror();
174 extern void regfree();
175
176 #endif /* defined(__STDC__) */
177
178 #ifdef __cplusplus
179 }
180 #endif
181
182 #endif /* _REGEX_H */