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pcre.h
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1 /*************************************************
2 * Perl-Compatible Regular Expressions *
3 *************************************************/
4 
5 /* This is the public header file for the PCRE library, to be #included by
6 applications that call the PCRE functions.
7 
8  Copyright (c) 1997-2010 University of Cambridge
9 
10 -----------------------------------------------------------------------------
11 Redistribution and use in source and binary forms, with or without
12 modification, are permitted provided that the following conditions are met:
13 
14  * Redistributions of source code must retain the above copyright notice,
15  this list of conditions and the following disclaimer.
16 
17  * Redistributions in binary form must reproduce the above copyright
18  notice, this list of conditions and the following disclaimer in the
19  documentation and/or other materials provided with the distribution.
20 
21  * Neither the name of the University of Cambridge nor the names of its
22  contributors may be used to endorse or promote products derived from
23  this software without specific prior written permission.
24 
25 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
26 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
29 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 POSSIBILITY OF SUCH DAMAGE.
36 -----------------------------------------------------------------------------
37 */
38 
39 #ifndef _PCRE_H
40 #define _PCRE_H
41 
42 #define PCRE_STATIC
43 
44 /* The current PCRE version information. */
45 
46 #define PCRE_MAJOR 8
47 #define PCRE_MINOR 12
48 #define PCRE_PRERELEASE
49 #define PCRE_DATE 2011-01-15
50 
51 /* When an application links to a PCRE DLL in Windows, the symbols that are
52 imported have to be identified as such. When building PCRE, the appropriate
53 export setting is defined in pcre_internal.h, which includes this file. So we
54 don't change existing definitions of PCRE_EXP_DECL and PCRECPP_EXP_DECL. */
55 
56 #if defined(_WIN32) && !defined(PCRE_STATIC)
57 # ifndef PCRE_EXP_DECL
58 # define PCRE_EXP_DECL extern __declspec(dllimport)
59 # endif
60 # ifdef __cplusplus
61 # ifndef PCRECPP_EXP_DECL
62 # define PCRECPP_EXP_DECL extern __declspec(dllimport)
63 # endif
64 # ifndef PCRECPP_EXP_DEFN
65 # define PCRECPP_EXP_DEFN __declspec(dllimport)
66 # endif
67 # endif
68 #endif
69 
70 /* By default, we use the standard "extern" declarations. */
71 
72 #ifndef PCRE_EXP_DECL
73 # ifdef __cplusplus
74 # define PCRE_EXP_DECL extern "C"
75 # else
76 # define PCRE_EXP_DECL extern
77 # endif
78 #endif
79 
80 #ifdef __cplusplus
81 # ifndef PCRECPP_EXP_DECL
82 # define PCRECPP_EXP_DECL extern
83 # endif
84 # ifndef PCRECPP_EXP_DEFN
85 # define PCRECPP_EXP_DEFN
86 # endif
87 #endif
88 
89 /* Have to include stdlib.h in order to ensure that size_t is defined;
90 it is needed here for malloc. */
91 
92 #include <stdlib.h>
93 
94 /* Allow for C++ users */
95 
96 #ifdef __cplusplus
97 extern "C" {
98 #endif
99 
100 /* Options. Some are compile-time only, some are run-time only, and some are
101 both, so we keep them all distinct. However, almost all the bits in the options
102 word are now used. In the long run, we may have to re-use some of the
103 compile-time only bits for runtime options, or vice versa. */
104 
105 #define PCRE_CASELESS 0x00000001 /* Compile */
106 #define PCRE_MULTILINE 0x00000002 /* Compile */
107 #define PCRE_DOTALL 0x00000004 /* Compile */
108 #define PCRE_EXTENDED 0x00000008 /* Compile */
109 #define PCRE_ANCHORED 0x00000010 /* Compile, exec, DFA exec */
110 #define PCRE_DOLLAR_ENDONLY 0x00000020 /* Compile */
111 #define PCRE_EXTRA 0x00000040 /* Compile */
112 #define PCRE_NOTBOL 0x00000080 /* Exec, DFA exec */
113 #define PCRE_NOTEOL 0x00000100 /* Exec, DFA exec */
114 #define PCRE_UNGREEDY 0x00000200 /* Compile */
115 #define PCRE_NOTEMPTY 0x00000400 /* Exec, DFA exec */
116 #define PCRE_UTF8 0x00000800 /* Compile */
117 #define PCRE_NO_AUTO_CAPTURE 0x00001000 /* Compile */
118 #define PCRE_NO_UTF8_CHECK 0x00002000 /* Compile, exec, DFA exec */
119 #define PCRE_AUTO_CALLOUT 0x00004000 /* Compile */
120 #define PCRE_PARTIAL_SOFT 0x00008000 /* Exec, DFA exec */
121 #define PCRE_PARTIAL 0x00008000 /* Backwards compatible synonym */
122 #define PCRE_DFA_SHORTEST 0x00010000 /* DFA exec */
123 #define PCRE_DFA_RESTART 0x00020000 /* DFA exec */
124 #define PCRE_FIRSTLINE 0x00040000 /* Compile */
125 #define PCRE_DUPNAMES 0x00080000 /* Compile */
126 #define PCRE_NEWLINE_CR 0x00100000 /* Compile, exec, DFA exec */
127 #define PCRE_NEWLINE_LF 0x00200000 /* Compile, exec, DFA exec */
128 #define PCRE_NEWLINE_CRLF 0x00300000 /* Compile, exec, DFA exec */
129 #define PCRE_NEWLINE_ANY 0x00400000 /* Compile, exec, DFA exec */
130 #define PCRE_NEWLINE_ANYCRLF 0x00500000 /* Compile, exec, DFA exec */
131 #define PCRE_BSR_ANYCRLF 0x00800000 /* Compile, exec, DFA exec */
132 #define PCRE_BSR_UNICODE 0x01000000 /* Compile, exec, DFA exec */
133 #define PCRE_JAVASCRIPT_COMPAT 0x02000000 /* Compile */
134 #define PCRE_NO_START_OPTIMIZE 0x04000000 /* Compile, exec, DFA exec */
135 #define PCRE_NO_START_OPTIMISE 0x04000000 /* Synonym */
136 #define PCRE_PARTIAL_HARD 0x08000000 /* Exec, DFA exec */
137 #define PCRE_NOTEMPTY_ATSTART 0x10000000 /* Exec, DFA exec */
138 #define PCRE_UCP 0x20000000 /* Compile */
139 
140 /* Exec-time and get/set-time error codes */
141 
142 #define PCRE_ERROR_NOMATCH (-1)
143 #define PCRE_ERROR_NULL (-2)
144 #define PCRE_ERROR_BADOPTION (-3)
145 #define PCRE_ERROR_BADMAGIC (-4)
146 #define PCRE_ERROR_UNKNOWN_OPCODE (-5)
147 #define PCRE_ERROR_UNKNOWN_NODE (-5) /* For backward compatibility */
148 #define PCRE_ERROR_NOMEMORY (-6)
149 #define PCRE_ERROR_NOSUBSTRING (-7)
150 #define PCRE_ERROR_MATCHLIMIT (-8)
151 #define PCRE_ERROR_CALLOUT (-9) /* Never used by PCRE itself */
152 #define PCRE_ERROR_BADUTF8 (-10)
153 #define PCRE_ERROR_BADUTF8_OFFSET (-11)
154 #define PCRE_ERROR_PARTIAL (-12)
155 #define PCRE_ERROR_BADPARTIAL (-13)
156 #define PCRE_ERROR_INTERNAL (-14)
157 #define PCRE_ERROR_BADCOUNT (-15)
158 #define PCRE_ERROR_DFA_UITEM (-16)
159 #define PCRE_ERROR_DFA_UCOND (-17)
160 #define PCRE_ERROR_DFA_UMLIMIT (-18)
161 #define PCRE_ERROR_DFA_WSSIZE (-19)
162 #define PCRE_ERROR_DFA_RECURSE (-20)
163 #define PCRE_ERROR_RECURSIONLIMIT (-21)
164 #define PCRE_ERROR_NULLWSLIMIT (-22) /* No longer actually used */
165 #define PCRE_ERROR_BADNEWLINE (-23)
166 #define PCRE_ERROR_BADOFFSET (-24)
167 #define PCRE_ERROR_SHORTUTF8 (-25)
168 
169 /* Request types for pcre_fullinfo() */
170 
171 #define PCRE_INFO_OPTIONS 0
172 #define PCRE_INFO_SIZE 1
173 #define PCRE_INFO_CAPTURECOUNT 2
174 #define PCRE_INFO_BACKREFMAX 3
175 #define PCRE_INFO_FIRSTBYTE 4
176 #define PCRE_INFO_FIRSTCHAR 4 /* For backwards compatibility */
177 #define PCRE_INFO_FIRSTTABLE 5
178 #define PCRE_INFO_LASTLITERAL 6
179 #define PCRE_INFO_NAMEENTRYSIZE 7
180 #define PCRE_INFO_NAMECOUNT 8
181 #define PCRE_INFO_NAMETABLE 9
182 #define PCRE_INFO_STUDYSIZE 10
183 #define PCRE_INFO_DEFAULT_TABLES 11
184 #define PCRE_INFO_OKPARTIAL 12
185 #define PCRE_INFO_JCHANGED 13
186 #define PCRE_INFO_HASCRORLF 14
187 #define PCRE_INFO_MINLENGTH 15
188 
189 /* Request types for pcre_config(). Do not re-arrange, in order to remain
190 compatible. */
191 
192 #define PCRE_CONFIG_UTF8 0
193 #define PCRE_CONFIG_NEWLINE 1
194 #define PCRE_CONFIG_LINK_SIZE 2
195 #define PCRE_CONFIG_POSIX_MALLOC_THRESHOLD 3
196 #define PCRE_CONFIG_MATCH_LIMIT 4
197 #define PCRE_CONFIG_STACKRECURSE 5
198 #define PCRE_CONFIG_UNICODE_PROPERTIES 6
199 #define PCRE_CONFIG_MATCH_LIMIT_RECURSION 7
200 #define PCRE_CONFIG_BSR 8
201 
202 /* Bit flags for the pcre_extra structure. Do not re-arrange or redefine
203 these bits, just add new ones on the end, in order to remain compatible. */
204 
205 #define PCRE_EXTRA_STUDY_DATA 0x0001
206 #define PCRE_EXTRA_MATCH_LIMIT 0x0002
207 #define PCRE_EXTRA_CALLOUT_DATA 0x0004
208 #define PCRE_EXTRA_TABLES 0x0008
209 #define PCRE_EXTRA_MATCH_LIMIT_RECURSION 0x0010
210 #define PCRE_EXTRA_MARK 0x0020
211 
212 /* Types */
213 
214 struct real_pcre; /* declaration; the definition is private */
215 typedef struct real_pcre pcre;
216 
217 /* When PCRE is compiled as a C++ library, the subject pointer type can be
218 replaced with a custom type. For conventional use, the public interface is a
219 const char *. */
220 
221 #ifndef PCRE_SPTR
222 #define PCRE_SPTR const char *
223 #endif
224 
225 /* The structure for passing additional data to pcre_exec(). This is defined in
226 such as way as to be extensible. Always add new fields at the end, in order to
227 remain compatible. */
228 
229 typedef struct pcre_extra {
230  unsigned long int flags; /* Bits for which fields are set */
231  void *study_data; /* Opaque data from pcre_study() */
232  unsigned long int match_limit; /* Maximum number of calls to match() */
233  void *callout_data; /* Data passed back in callouts */
234  const unsigned char *tables; /* Pointer to character tables */
235  unsigned long int match_limit_recursion; /* Max recursive calls to match() */
236  unsigned char **mark; /* For passing back a mark pointer */
237 } pcre_extra;
238 
239 /* The structure for passing out data via the pcre_callout_function. We use a
240 structure so that new fields can be added on the end in future versions,
241 without changing the API of the function, thereby allowing old clients to work
242 without modification. */
243 
244 typedef struct pcre_callout_block {
245  int version; /* Identifies version of block */
246  /* ------------------------ Version 0 ------------------------------- */
247  int callout_number; /* Number compiled into pattern */
248  int *offset_vector; /* The offset vector */
249  PCRE_SPTR subject; /* The subject being matched */
250  int subject_length; /* The length of the subject */
251  int start_match; /* Offset to start of this match attempt */
252  int current_position; /* Where we currently are in the subject */
253  int capture_top; /* Max current capture */
254  int capture_last; /* Most recently closed capture */
255  void *callout_data; /* Data passed in with the call */
256  /* ------------------- Added for Version 1 -------------------------- */
257  int pattern_position; /* Offset to next item in the pattern */
258  int next_item_length; /* Length of next item in the pattern */
259  /* ------------------------------------------------------------------ */
261 
262 /* Indirection for store get and free functions. These can be set to
263 alternative malloc/free functions if required. Special ones are used in the
264 non-recursive case for "frames". There is also an optional callout function
265 that is triggered by the (?) regex item. For Virtual Pascal, these definitions
266 have to take another form. */
267 
268 #ifndef VPCOMPAT
269 PCRE_EXP_DECL void *(*pcre_malloc)(size_t);
270 PCRE_EXP_DECL void (*pcre_free)(void *);
271 PCRE_EXP_DECL void *(*pcre_stack_malloc)(size_t);
274 #else /* VPCOMPAT */
275 PCRE_EXP_DECL void *pcre_malloc(size_t);
276 PCRE_EXP_DECL void pcre_free(void *);
277 PCRE_EXP_DECL void *pcre_stack_malloc(size_t);
278 PCRE_EXP_DECL void pcre_stack_free(void *);
280 #endif /* VPCOMPAT */
281 
282 /* Exported PCRE functions */
283 
284 PCRE_EXP_DECL pcre *pcre_compile(const char *, int, const char **, int *,
285  const unsigned char *);
286 PCRE_EXP_DECL pcre *pcre_compile2(const char *, int, int *, const char **,
287  int *, const unsigned char *);
288 PCRE_EXP_DECL int pcre_config(int, void *);
289 PCRE_EXP_DECL int pcre_copy_named_substring(const pcre *, const char *,
290  int *, int, const char *, char *, int);
291 PCRE_EXP_DECL int pcre_copy_substring(const char *, int *, int, int, char *,
292  int);
293 PCRE_EXP_DECL int pcre_dfa_exec(const pcre *, const pcre_extra *,
294  const char *, int, int, int, int *, int , int *, int);
295 PCRE_EXP_DECL int pcre_exec(const pcre *, const pcre_extra *, PCRE_SPTR,
296  int, int, int, int *, int);
297 PCRE_EXP_DECL void pcre_free_substring(const char *);
298 PCRE_EXP_DECL void pcre_free_substring_list(const char **);
299 PCRE_EXP_DECL int pcre_fullinfo(const pcre *, const pcre_extra *, int,
300  void *);
301 PCRE_EXP_DECL int pcre_get_named_substring(const pcre *, const char *,
302  int *, int, const char *, const char **);
303 PCRE_EXP_DECL int pcre_get_stringnumber(const pcre *, const char *);
304 PCRE_EXP_DECL int pcre_get_stringtable_entries(const pcre *, const char *,
305  char **, char **);
306 PCRE_EXP_DECL int pcre_get_substring(const char *, int *, int, int,
307  const char **);
308 PCRE_EXP_DECL int pcre_get_substring_list(const char *, int *, int,
309  const char ***);
310 PCRE_EXP_DECL int pcre_info(const pcre *, int *, int *);
311 PCRE_EXP_DECL const unsigned char *pcre_maketables(void);
312 PCRE_EXP_DECL int pcre_refcount(pcre *, int);
313 PCRE_EXP_DECL pcre_extra *pcre_study(const pcre *, int, const char **);
314 PCRE_EXP_DECL const char *pcre_version(void);
315 
316 #ifdef __cplusplus
317 } /* extern "C" */
318 #endif
319 
320 #endif /* End of pcre.h */