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 2014 Garrett D'Amore <garrett@damore.org>
24 *
25 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
27 */
28
29 /*
30 * Copyright 1989, 1994 by Mortice Kern Systems Inc.
31 * All rights reserved.
32 */
33 /*
34 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
35 * Use is subject to license terms.
36 */
37
38 #ifndef _REGEX_H
39 #define _REGEX_H
40
41 #include <sys/feature_tests.h>
42 #include <sys/types.h>
43
44 #ifdef __cplusplus
45 extern "C" {
46 #endif
47
48
49 /*
50 * wchar_t is a built-in type in standard C++ and as such is not
51 * defined here when using standard C++. However, the GNU compiler
52 * fixincludes utility nonetheless creates its own version of this
53 * header for use by gcc and g++. In that version it adds a redundant
54 * guard for __cplusplus. To avoid the creation of a gcc/g++ specific
55 * header we need to include the following magic comment:
56 *
57 * we must use the C++ compiler's type
58 *
59 * The above comment should not be removed or changed until GNU
60 * gcc/fixinc/inclhack.def is updated to bypass this header.
61 */
62 #if !defined(__cplusplus) || (__cplusplus < 199711L && !defined(__GNUG__))
63 #ifndef _WCHAR_T
64 #define _WCHAR_T
65 #if defined(_LP64)
66 typedef int wchar_t;
67 #else
68 typedef long wchar_t;
69 #endif
70 #endif /* !_WCHAR_T */
71 #endif /* !defined(__cplusplus) ... */
72
73 typedef ssize_t regoff_t;
74
75 /* regcomp flags */
76 #define REG_BASIC 0x00
77 #define REG_EXTENDED 0x01 /* Use Extended Regular Expressions */
78 #define REG_NEWLINE 0x08 /* Treat \n as regular character */
79 #define REG_ICASE 0x04 /* Ignore case in match */
80 #define REG_NOSUB 0x02 /* Don't set subexpression */
81 #define REG_EGREP 0x1000 /* running as egrep(1) */
82
83 /* non-standard flags - note that most of these are not supported */
84 #define REG_DELIM 0x10 /* string[0] is delimiter */
85 #define REG_DEBUG 0x20 /* Debug recomp and regexec */
86 #define REG_ANCHOR 0x40 /* Implicit ^ and $ */
87 #define REG_WORDS 0x80 /* \< and \> match word boundries */
88
89 /* FreeBSD additions */
90 #define REG_DUMP 0x2000
91 #define REG_PEND 0x4000
92 #define REG_NOSPEC 0x8000
93 #define REG_STARTEND 0x10000
94
95 /* internal flags */
96 #define REG_MUST 0x100 /* check for regmust substring */
97
98 /* regexec flags */
99 #define REG_NOTBOL 0x200 /* string is not BOL */
100 #define REG_NOTEOL 0x400 /* string has no EOL */
101 #define REG_NOOPT 0x800 /* don't do regmust optimization */
102
103 /* regcomp and regexec return codes */
104 #define REG_OK 0 /* success (non-standard) */
105 #define REG_NOMATCH 1 /* regexec failed to match */
106 #define REG_ECOLLATE 2 /* invalid collation element ref. */
107 #define REG_EESCAPE 3 /* trailing \ in pattern */
108 #define REG_ENEWLINE 4 /* \n found before end of pattern */
109 #define REG_ENSUB 5 /* more than 9 \( \) pairs (OBS) */
110 #define REG_ESUBREG 6 /* number in \[0-9] invalid */
111 #define REG_EBRACK 7 /* [ ] imbalance */
112 #define REG_EPAREN 8 /* ( ) imbalance */
113 #define REG_EBRACE 9 /* \{ \} imbalance */
114 #define REG_ERANGE 10 /* invalid endpoint in range */
115 #define REG_ESPACE 11 /* no memory for compiled pattern */
116 #define REG_BADRPT 12 /* invalid repetition */
117 #define REG_ECTYPE 13 /* invalid char-class type */
118 #define REG_BADPAT 14 /* syntax error */
119 #define REG_BADBR 15 /* \{ \} contents bad */
120 #define REG_EFATAL 16 /* internal error, not POSIX.2 */
121 #define REG_ECHAR 17 /* invalid mulitbyte character */
122 #define REG_STACK 18 /* backtrack stack overflow */
123 #define REG_ENOSYS 19 /* function not supported (XPG4) */
124 #define REG__LAST 20 /* first unused code */
125 #define REG_EBOL 21 /* ^ anchor and not BOL */
126 #define REG_EEOL 22 /* $ anchor and not EOL */
127 #define _REG_BACKREF_MAX 9 /* Max # of subexp. backreference */
128
129 typedef struct { /* regcomp() data saved for regexec() */
130 size_t re_nsub; /* # of subexpressions in RE pattern */
131
132 /*
133 * Internal use only. Note that any changes to this structure
134 * have to preserve sizing, as it is baked into applications.
135 */
136 struct re_guts *re_g;
137 int re_magic;
138 const char *re_endp;
139
140 /* here for compat */
141 size_t re_len; /* # wchar_t chars in compiled pattern */
142 struct _regex_ext_t *re_sc; /* for binary compatibility */
143 } regex_t;
144
145 /* subexpression positions */
146 typedef struct {
147 const char *rm_sp, *rm_ep; /* Start pointer, end pointer */
148 regoff_t rm_so, rm_eo; /* Start offset, end offset */
149 int rm_ss, rm_es; /* Used internally */
150 } regmatch_t;
151
152
153 /*
154 * Additional API and structs to support regular expression manipulations
155 * on wide characters.
156 */
157
158 extern int regcomp(regex_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD, int);
159 extern int regexec(const regex_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD,
160 size_t, regmatch_t *_RESTRICT_KYWD, int);
161 extern size_t regerror(int, const regex_t *_RESTRICT_KYWD,
162 char *_RESTRICT_KYWD, size_t);
163 extern void regfree(regex_t *);
164
165 #ifdef __cplusplus
166 }
167 #endif
168
169 #endif /* _REGEX_H */