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 /*
24 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
25 *
26 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
27 * Use is subject to license terms.
28 */
29
30 /*
31 * Copyright 1989, 1994 by Mortice Kern Systems Inc.
32 * All rights reserved.
33 */
34
35 /*
36 * Copyright 2017 Nexenta Systems, Inc.
37 */
38
39 #ifndef _REGEX_H
40 #define _REGEX_H
41
42 #include <sys/feature_tests.h>
43 #include <sys/types.h>
44
45 #ifdef __cplusplus
46 extern "C" {
47 #endif
48
49
50 /*
51 * wchar_t is a built-in type in standard C++ and as such is not
52 * defined here when using standard C++. However, the GNU compiler
53 * fixincludes utility nonetheless creates its own version of this
54 * header for use by gcc and g++. In that version it adds a redundant
55 * guard for __cplusplus. To avoid the creation of a gcc/g++ specific
56 * header we need to include the following magic comment:
57 *
58 * we must use the C++ compiler's type
59 *
60 * The above comment should not be removed or changed until GNU
61 * gcc/fixinc/inclhack.def is updated to bypass this header.
62 */
63 #if !defined(__cplusplus) || (__cplusplus < 199711L && !defined(__GNUG__))
64 #ifndef _WCHAR_T
65 #define _WCHAR_T
66 #if defined(_LP64)
67 typedef int wchar_t;
68 #else
69 typedef long wchar_t;
70 #endif
71 #endif /* !_WCHAR_T */
72 #endif /* !defined(__cplusplus) ... */
73
74 typedef ssize_t regoff_t;
75
76 /* regcomp flags */
77 #define REG_BASIC 0x00000
78 #define REG_EXTENDED 0x00001 /* Use Extended Regular Expressions */
79 #define REG_NOSUB 0x00002 /* Don't set subexpression */
80 #define REG_ICASE 0x00004 /* Ignore case in match */
81 #define REG_NEWLINE 0x00008 /* Treat \n as regular character */
82 #define REG_DELIM 0x00010 /* legacy, no effect */
83 #define REG_DEBUG 0x00020 /* legacy, no effect */
84 #define REG_ANCHOR 0x00040 /* legacy, no effect */
85 #define REG_WORDS 0x00080 /* legacy, no effect */
86 #define REG_EGREP 0x01000 /* legacy, no effect */
87 #define REG_DUMP 0x02000 /* internal */
88 #define REG_PEND 0x04000 /* NULs are ordinary characters */
89 #define REG_NOSPEC 0x08000 /* no special characters */
90
91 /* internal flags */
92 #define REG_MUST 0x00100 /* legacy, no effect */
93
94 /* regexec flags */
95 #define REG_NOTBOL 0x00200 /* string is not BOL */
96 #define REG_NOTEOL 0x00400 /* string has no EOL */
97 #define REG_NOOPT 0x00800 /* legacy, no effect */
98 #define REG_STARTEND 0x10000 /* match whole pattern */
99 #define REG_TRACE 0x20000 /* tracing of execution */
100 #define REG_LARGE 0x40000 /* force large representation */
101 #define REG_BACKR 0x80000 /* force use of backref code */
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 multibyte 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_ATOI 255 /* convert name to number (!) */
128 #define REG_ITOA 256 /* convert number to name (!) */
129
130 #define _REG_BACKREF_MAX 9 /* Max # of subexp. backreference */
131
132 typedef struct { /* regcomp() data saved for regexec() */
133 size_t re_nsub; /* # of subexpressions in RE pattern */
134
135 /*
136 * Internal use only. Note that any changes to this structure
137 * have to preserve sizing, as it is baked into applications.
138 */
139 struct re_guts *re_g;
140 int re_magic;
141 const char *re_endp;
142
143 /* here for compat */
144 size_t re_len; /* # wchar_t chars in compiled pattern */
145 struct _regex_ext_t *re_sc; /* for binary compatibility */
146 } regex_t;
147
148 /* subexpression positions */
149 typedef struct {
150 const char *rm_sp, *rm_ep; /* Start pointer, end pointer */
151 regoff_t rm_so, rm_eo; /* Start offset, end offset */
152 int rm_ss, rm_es; /* Used internally */
153 } regmatch_t;
154
155
156 /*
157 * IEEE Std 1003.2 ("POSIX.2") regular expressions API.
158 */
159
160 extern int regcomp(regex_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD, int);
161 extern int regexec(const regex_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD,
162 size_t, regmatch_t *_RESTRICT_KYWD, int);
163 extern size_t regerror(int, const regex_t *_RESTRICT_KYWD, char *_RESTRICT_KYWD,
164 size_t);
165 extern void regfree(regex_t *);
166
167 #ifdef __cplusplus
168 }
169 #endif
170
171 #endif /* _REGEX_H */