/[pcre]/code/trunk/pcre_internal.h
ViewVC logotype

Contents of /code/trunk/pcre_internal.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 514 - (show annotations) (download)
Mon May 3 12:54:22 2010 UTC (4 years, 7 months ago) by ph10
File MIME type: text/plain
File size: 75481 byte(s)
Add support for \N.

1 /*************************************************
2 * Perl-Compatible Regular Expressions *
3 *************************************************/
4
5
6 /* PCRE is a library of functions to support regular expressions whose syntax
7 and semantics are as close as possible to those of the Perl 5 language.
8
9 Written by Philip Hazel
10 Copyright (c) 1997-2010 University of Cambridge
11
12 -----------------------------------------------------------------------------
13 Redistribution and use in source and binary forms, with or without
14 modification, are permitted provided that the following conditions are met:
15
16 * Redistributions of source code must retain the above copyright notice,
17 this list of conditions and the following disclaimer.
18
19 * Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
22
23 * Neither the name of the University of Cambridge nor the names of its
24 contributors may be used to endorse or promote products derived from
25 this software without specific prior written permission.
26
27 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
28 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
31 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 POSSIBILITY OF SUCH DAMAGE.
38 -----------------------------------------------------------------------------
39 */
40
41 /* This header contains definitions that are shared between the different
42 modules, but which are not relevant to the exported API. This includes some
43 functions whose names all begin with "_pcre_". */
44
45 #ifndef PCRE_INTERNAL_H
46 #define PCRE_INTERNAL_H
47
48 /* Define PCRE_DEBUG to get debugging output on stdout. */
49
50 #if 0
51 #define PCRE_DEBUG
52 #endif
53
54 /* We do not support both EBCDIC and UTF-8 at the same time. The "configure"
55 script prevents both being selected, but not everybody uses "configure". */
56
57 #if defined EBCDIC && defined SUPPORT_UTF8
58 #error The use of both EBCDIC and SUPPORT_UTF8 is not supported.
59 #endif
60
61 /* If SUPPORT_UCP is defined, SUPPORT_UTF8 must also be defined. The
62 "configure" script ensures this, but not everybody uses "configure". */
63
64 #if defined SUPPORT_UCP && !defined SUPPORT_UTF8
65 #define SUPPORT_UTF8 1
66 #endif
67
68 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
69 inline, and there are *still* stupid compilers about that don't like indented
70 pre-processor statements, or at least there were when I first wrote this. After
71 all, it had only been about 10 years then...
72
73 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
74 be absolutely sure we get our version. */
75
76 #undef DPRINTF
77 #ifdef PCRE_DEBUG
78 #define DPRINTF(p) printf p
79 #else
80 #define DPRINTF(p) /* Nothing */
81 #endif
82
83
84 /* Standard C headers plus the external interface definition. The only time
85 setjmp and stdarg are used is when NO_RECURSE is set. */
86
87 #include <ctype.h>
88 #include <limits.h>
89 #include <stddef.h>
90 #include <stdio.h>
91 #include <stdlib.h>
92 #include <string.h>
93
94 /* When compiling a DLL for Windows, the exported symbols have to be declared
95 using some MS magic. I found some useful information on this web page:
96 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
97 information there, using __declspec(dllexport) without "extern" we have a
98 definition; with "extern" we have a declaration. The settings here override the
99 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
100 which is all that is needed for applications (they just import the symbols). We
101 use:
102
103 PCRE_EXP_DECL for declarations
104 PCRE_EXP_DEFN for definitions of exported functions
105 PCRE_EXP_DATA_DEFN for definitions of exported variables
106
107 The reason for the two DEFN macros is that in non-Windows environments, one
108 does not want to have "extern" before variable definitions because it leads to
109 compiler warnings. So we distinguish between functions and variables. In
110 Windows, the two should always be the same.
111
112 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
113 which is an application, but needs to import this file in order to "peek" at
114 internals, can #include pcre.h first to get an application's-eye view.
115
116 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
117 special-purpose environments) might want to stick other stuff in front of
118 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
119 PCRE_EXP_DATA_DEFN only if they are not already set. */
120
121 #ifndef PCRE_EXP_DECL
122 # ifdef _WIN32
123 # ifndef PCRE_STATIC
124 # define PCRE_EXP_DECL extern __declspec(dllexport)
125 # define PCRE_EXP_DEFN __declspec(dllexport)
126 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
127 # else
128 # define PCRE_EXP_DECL extern
129 # define PCRE_EXP_DEFN
130 # define PCRE_EXP_DATA_DEFN
131 # endif
132 # else
133 # ifdef __cplusplus
134 # define PCRE_EXP_DECL extern "C"
135 # else
136 # define PCRE_EXP_DECL extern
137 # endif
138 # ifndef PCRE_EXP_DEFN
139 # define PCRE_EXP_DEFN PCRE_EXP_DECL
140 # endif
141 # ifndef PCRE_EXP_DATA_DEFN
142 # define PCRE_EXP_DATA_DEFN
143 # endif
144 # endif
145 #endif
146
147 /* When compiling with the MSVC compiler, it is sometimes necessary to include
148 a "calling convention" before exported function names. (This is secondhand
149 information; I know nothing about MSVC myself). For example, something like
150
151 void __cdecl function(....)
152
153 might be needed. In order so make this easy, all the exported functions have
154 PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
155 set, we ensure here that it has no effect. */
156
157 #ifndef PCRE_CALL_CONVENTION
158 #define PCRE_CALL_CONVENTION
159 #endif
160
161 /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
162 cannot determine these outside the compilation (e.g. by running a program as
163 part of "configure") because PCRE is often cross-compiled for use on other
164 systems. Instead we make use of the maximum sizes that are available at
165 preprocessor time in standard C environments. */
166
167 #if USHRT_MAX == 65535
168 typedef unsigned short pcre_uint16;
169 typedef short pcre_int16;
170 #elif UINT_MAX == 65535
171 typedef unsigned int pcre_uint16;
172 typedef int pcre_int16;
173 #else
174 #error Cannot determine a type for 16-bit unsigned integers
175 #endif
176
177 #if UINT_MAX == 4294967295
178 typedef unsigned int pcre_uint32;
179 typedef int pcre_int32;
180 #elif ULONG_MAX == 4294967295
181 typedef unsigned long int pcre_uint32;
182 typedef long int pcre_int32;
183 #else
184 #error Cannot determine a type for 32-bit unsigned integers
185 #endif
186
187 /* When checking for integer overflow in pcre_compile(), we need to handle
188 large integers. If a 64-bit integer type is available, we can use that.
189 Otherwise we have to cast to double, which of course requires floating point
190 arithmetic. Handle this by defining a macro for the appropriate type. If
191 stdint.h is available, include it; it may define INT64_MAX. Systems that do not
192 have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
193 by "configure". */
194
195 #if HAVE_STDINT_H
196 #include <stdint.h>
197 #elif HAVE_INTTYPES_H
198 #include <inttypes.h>
199 #endif
200
201 #if defined INT64_MAX || defined int64_t
202 #define INT64_OR_DOUBLE int64_t
203 #else
204 #define INT64_OR_DOUBLE double
205 #endif
206
207 /* All character handling must be done as unsigned characters. Otherwise there
208 are problems with top-bit-set characters and functions such as isspace().
209 However, we leave the interface to the outside world as char *, because that
210 should make things easier for callers. We define a short type for unsigned char
211 to save lots of typing. I tried "uchar", but it causes problems on Digital
212 Unix, where it is defined in sys/types, so use "uschar" instead. */
213
214 typedef unsigned char uschar;
215
216 /* This is an unsigned int value that no character can ever have. UTF-8
217 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
218 0x0010ffff). */
219
220 #define NOTACHAR 0xffffffff
221
222 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
223 "any" and "anycrlf" at present). The following macros are used to package up
224 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
225 modules to indicate in which datablock the parameters exist, and what the
226 start/end of string field names are. */
227
228 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
229 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
230 #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
231
232 /* This macro checks for a newline at the given position */
233
234 #define IS_NEWLINE(p) \
235 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
236 ((p) < NLBLOCK->PSEND && \
237 _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\
238 utf8)) \
239 : \
240 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
241 (p)[0] == NLBLOCK->nl[0] && \
242 (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
243 ) \
244 )
245
246 /* This macro checks for a newline immediately preceding the given position */
247
248 #define WAS_NEWLINE(p) \
249 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
250 ((p) > NLBLOCK->PSSTART && \
251 _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
252 &(NLBLOCK->nllen), utf8)) \
253 : \
254 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
255 (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
256 (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
257 ) \
258 )
259
260 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
261 with a custom type. This makes it possible, for example, to allow pcre_exec()
262 to process subject strings that are discontinuous by using a smart pointer
263 class. It must always be possible to inspect all of the subject string in
264 pcre_exec() because of the way it backtracks. Two macros are required in the
265 normal case, for sign-unspecified and unsigned char pointers. The former is
266 used for the external interface and appears in pcre.h, which is why its name
267 must begin with PCRE_. */
268
269 #ifdef CUSTOM_SUBJECT_PTR
270 #define PCRE_SPTR CUSTOM_SUBJECT_PTR
271 #define USPTR CUSTOM_SUBJECT_PTR
272 #else
273 #define PCRE_SPTR const char *
274 #define USPTR const unsigned char *
275 #endif
276
277
278
279 /* Include the public PCRE header and the definitions of UCP character property
280 values. */
281
282 #include "pcre.h"
283 #include "ucp.h"
284
285 /* When compiling for use with the Virtual Pascal compiler, these functions
286 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
287 option on the command line. */
288
289 #ifdef VPCOMPAT
290 #define strlen(s) _strlen(s)
291 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
292 #define memcmp(s,c,n) _memcmp(s,c,n)
293 #define memcpy(d,s,n) _memcpy(d,s,n)
294 #define memmove(d,s,n) _memmove(d,s,n)
295 #define memset(s,c,n) _memset(s,c,n)
296 #else /* VPCOMPAT */
297
298 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
299 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
300 is set. Otherwise, include an emulating function for those systems that have
301 neither (there some non-Unix environments where this is the case). */
302
303 #ifndef HAVE_MEMMOVE
304 #undef memmove /* some systems may have a macro */
305 #ifdef HAVE_BCOPY
306 #define memmove(a, b, c) bcopy(b, a, c)
307 #else /* HAVE_BCOPY */
308 static void *
309 pcre_memmove(void *d, const void *s, size_t n)
310 {
311 size_t i;
312 unsigned char *dest = (unsigned char *)d;
313 const unsigned char *src = (const unsigned char *)s;
314 if (dest > src)
315 {
316 dest += n;
317 src += n;
318 for (i = 0; i < n; ++i) *(--dest) = *(--src);
319 return (void *)dest;
320 }
321 else
322 {
323 for (i = 0; i < n; ++i) *dest++ = *src++;
324 return (void *)(dest - n);
325 }
326 }
327 #define memmove(a, b, c) pcre_memmove(a, b, c)
328 #endif /* not HAVE_BCOPY */
329 #endif /* not HAVE_MEMMOVE */
330 #endif /* not VPCOMPAT */
331
332
333 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
334 in big-endian order) by default. These are used, for example, to link from the
335 start of a subpattern to its alternatives and its end. The use of 2 bytes per
336 offset limits the size of the compiled regex to around 64K, which is big enough
337 for almost everybody. However, I received a request for an even bigger limit.
338 For this reason, and also to make the code easier to maintain, the storing and
339 loading of offsets from the byte string is now handled by the macros that are
340 defined here.
341
342 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
343 the config.h file, but can be overridden by using -D on the command line. This
344 is automated on Unix systems via the "configure" command. */
345
346 #if LINK_SIZE == 2
347
348 #define PUT(a,n,d) \
349 (a[n] = (d) >> 8), \
350 (a[(n)+1] = (d) & 255)
351
352 #define GET(a,n) \
353 (((a)[n] << 8) | (a)[(n)+1])
354
355 #define MAX_PATTERN_SIZE (1 << 16)
356
357
358 #elif LINK_SIZE == 3
359
360 #define PUT(a,n,d) \
361 (a[n] = (d) >> 16), \
362 (a[(n)+1] = (d) >> 8), \
363 (a[(n)+2] = (d) & 255)
364
365 #define GET(a,n) \
366 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
367
368 #define MAX_PATTERN_SIZE (1 << 24)
369
370
371 #elif LINK_SIZE == 4
372
373 #define PUT(a,n,d) \
374 (a[n] = (d) >> 24), \
375 (a[(n)+1] = (d) >> 16), \
376 (a[(n)+2] = (d) >> 8), \
377 (a[(n)+3] = (d) & 255)
378
379 #define GET(a,n) \
380 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
381
382 #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */
383
384
385 #else
386 #error LINK_SIZE must be either 2, 3, or 4
387 #endif
388
389
390 /* Convenience macro defined in terms of the others */
391
392 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
393
394
395 /* PCRE uses some other 2-byte quantities that do not change when the size of
396 offsets changes. There are used for repeat counts and for other things such as
397 capturing parenthesis numbers in back references. */
398
399 #define PUT2(a,n,d) \
400 a[n] = (d) >> 8; \
401 a[(n)+1] = (d) & 255
402
403 #define GET2(a,n) \
404 (((a)[n] << 8) | (a)[(n)+1])
405
406 #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2
407
408
409 /* When UTF-8 encoding is being used, a character is no longer just a single
410 byte. The macros for character handling generate simple sequences when used in
411 byte-mode, and more complicated ones for UTF-8 characters. BACKCHAR should
412 never be called in byte mode. To make sure it can never even appear when UTF-8
413 support is omitted, we don't even define it. */
414
415 #ifndef SUPPORT_UTF8
416 #define GETCHAR(c, eptr) c = *eptr;
417 #define GETCHARTEST(c, eptr) c = *eptr;
418 #define GETCHARINC(c, eptr) c = *eptr++;
419 #define GETCHARINCTEST(c, eptr) c = *eptr++;
420 #define GETCHARLEN(c, eptr, len) c = *eptr;
421 /* #define BACKCHAR(eptr) */
422
423 #else /* SUPPORT_UTF8 */
424
425 /* Get the next UTF-8 character, not advancing the pointer. This is called when
426 we know we are in UTF-8 mode. */
427
428 #define GETCHAR(c, eptr) \
429 c = *eptr; \
430 if (c >= 0xc0) \
431 { \
432 int gcii; \
433 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
434 int gcss = 6*gcaa; \
435 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
436 for (gcii = 1; gcii <= gcaa; gcii++) \
437 { \
438 gcss -= 6; \
439 c |= (eptr[gcii] & 0x3f) << gcss; \
440 } \
441 }
442
443 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
444 pointer. */
445
446 #define GETCHARTEST(c, eptr) \
447 c = *eptr; \
448 if (utf8 && c >= 0xc0) \
449 { \
450 int gcii; \
451 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
452 int gcss = 6*gcaa; \
453 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
454 for (gcii = 1; gcii <= gcaa; gcii++) \
455 { \
456 gcss -= 6; \
457 c |= (eptr[gcii] & 0x3f) << gcss; \
458 } \
459 }
460
461 /* Get the next UTF-8 character, advancing the pointer. This is called when we
462 know we are in UTF-8 mode. */
463
464 #define GETCHARINC(c, eptr) \
465 c = *eptr++; \
466 if (c >= 0xc0) \
467 { \
468 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
469 int gcss = 6*gcaa; \
470 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
471 while (gcaa-- > 0) \
472 { \
473 gcss -= 6; \
474 c |= (*eptr++ & 0x3f) << gcss; \
475 } \
476 }
477
478 /* Get the next character, testing for UTF-8 mode, and advancing the pointer */
479
480 #define GETCHARINCTEST(c, eptr) \
481 c = *eptr++; \
482 if (utf8 && c >= 0xc0) \
483 { \
484 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
485 int gcss = 6*gcaa; \
486 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
487 while (gcaa-- > 0) \
488 { \
489 gcss -= 6; \
490 c |= (*eptr++ & 0x3f) << gcss; \
491 } \
492 }
493
494 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
495 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
496
497 #define GETCHARLEN(c, eptr, len) \
498 c = *eptr; \
499 if (c >= 0xc0) \
500 { \
501 int gcii; \
502 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
503 int gcss = 6*gcaa; \
504 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
505 for (gcii = 1; gcii <= gcaa; gcii++) \
506 { \
507 gcss -= 6; \
508 c |= (eptr[gcii] & 0x3f) << gcss; \
509 } \
510 len += gcaa; \
511 }
512
513 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
514 pointer, incrementing length if there are extra bytes. This is called when we
515 know we are in UTF-8 mode. */
516
517 #define GETCHARLENTEST(c, eptr, len) \
518 c = *eptr; \
519 if (utf8 && c >= 0xc0) \
520 { \
521 int gcii; \
522 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
523 int gcss = 6*gcaa; \
524 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
525 for (gcii = 1; gcii <= gcaa; gcii++) \
526 { \
527 gcss -= 6; \
528 c |= (eptr[gcii] & 0x3f) << gcss; \
529 } \
530 len += gcaa; \
531 }
532
533 /* If the pointer is not at the start of a character, move it back until
534 it is. This is called only in UTF-8 mode - we don't put a test within the macro
535 because almost all calls are already within a block of UTF-8 only code. */
536
537 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
538
539 #endif
540
541
542 /* In case there is no definition of offsetof() provided - though any proper
543 Standard C system should have one. */
544
545 #ifndef offsetof
546 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
547 #endif
548
549
550 /* These are the public options that can change during matching. */
551
552 #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
553
554 /* Private flags containing information about the compiled regex. They used to
555 live at the top end of the options word, but that got almost full, so now they
556 are in a 16-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as
557 the restrictions on partial matching have been lifted. It remains for backwards
558 compatibility. */
559
560 #define PCRE_NOPARTIAL 0x0001 /* can't use partial with this regex */
561 #define PCRE_FIRSTSET 0x0002 /* first_byte is set */
562 #define PCRE_REQCHSET 0x0004 /* req_byte is set */
563 #define PCRE_STARTLINE 0x0008 /* start after \n for multiline */
564 #define PCRE_JCHANGED 0x0010 /* j option used in regex */
565 #define PCRE_HASCRORLF 0x0020 /* explicit \r or \n in pattern */
566
567 /* Options for the "extra" block produced by pcre_study(). */
568
569 #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
570 #define PCRE_STUDY_MINLEN 0x02 /* a minimum length field exists */
571
572 /* Masks for identifying the public options that are permitted at compile
573 time, run time, or study time, respectively. */
574
575 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
576 PCRE_NEWLINE_ANYCRLF)
577
578 #define PUBLIC_COMPILE_OPTIONS \
579 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
580 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
581 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
582 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
583 PCRE_JAVASCRIPT_COMPAT)
584
585 #define PUBLIC_EXEC_OPTIONS \
586 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
587 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
588 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
589
590 #define PUBLIC_DFA_EXEC_OPTIONS \
591 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
592 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
593 PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
594 PCRE_NO_START_OPTIMIZE)
595
596 #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
597
598 /* Magic number to provide a small check against being handed junk. Also used
599 to detect whether a pattern was compiled on a host of different endianness. */
600
601 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
602
603 /* Negative values for the firstchar and reqchar variables */
604
605 #define REQ_UNSET (-2)
606 #define REQ_NONE (-1)
607
608 /* The maximum remaining length of subject we are prepared to search for a
609 req_byte match. */
610
611 #define REQ_BYTE_MAX 1000
612
613 /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
614 variable-length repeat, or a anything other than literal characters. */
615
616 #define REQ_CASELESS 0x0100 /* indicates caselessness */
617 #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
618
619 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
620 environments where these macros are defined elsewhere. Unfortunately, there
621 is no way to do the same for the typedef. */
622
623 typedef int BOOL;
624
625 #ifndef FALSE
626 #define FALSE 0
627 #define TRUE 1
628 #endif
629
630 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
631 character constants like '*' because the compiler would emit their EBCDIC code,
632 which is different from their ASCII/UTF-8 code. Instead we define macros for
633 the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
634 is enabled. When UTF-8 support is not enabled, the definitions use character
635 literals. Both character and string versions of each character are needed, and
636 there are some longer strings as well.
637
638 This means that, on EBCDIC platforms, the PCRE library can handle either
639 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
640 would need different lookups depending on whether PCRE_UTF8 was set or not.
641 This would make it impossible to use characters in switch/case statements,
642 which would reduce performance. For a theoretical use (which nobody has asked
643 for) in a minority area (EBCDIC platforms), this is not sensible. Any
644 application that did need both could compile two versions of the library, using
645 macros to give the functions distinct names. */
646
647 #ifndef SUPPORT_UTF8
648
649 /* UTF-8 support is not enabled; use the platform-dependent character literals
650 so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
651
652 #define CHAR_HT '\t'
653 #define CHAR_VT '\v'
654 #define CHAR_FF '\f'
655 #define CHAR_CR '\r'
656 #define CHAR_NL '\n'
657 #define CHAR_BS '\b'
658 #define CHAR_BEL '\a'
659 #ifdef EBCDIC
660 #define CHAR_ESC '\047'
661 #define CHAR_DEL '\007'
662 #else
663 #define CHAR_ESC '\033'
664 #define CHAR_DEL '\177'
665 #endif
666
667 #define CHAR_SPACE ' '
668 #define CHAR_EXCLAMATION_MARK '!'
669 #define CHAR_QUOTATION_MARK '"'
670 #define CHAR_NUMBER_SIGN '#'
671 #define CHAR_DOLLAR_SIGN '$'
672 #define CHAR_PERCENT_SIGN '%'
673 #define CHAR_AMPERSAND '&'
674 #define CHAR_APOSTROPHE '\''
675 #define CHAR_LEFT_PARENTHESIS '('
676 #define CHAR_RIGHT_PARENTHESIS ')'
677 #define CHAR_ASTERISK '*'
678 #define CHAR_PLUS '+'
679 #define CHAR_COMMA ','
680 #define CHAR_MINUS '-'
681 #define CHAR_DOT '.'
682 #define CHAR_SLASH '/'
683 #define CHAR_0 '0'
684 #define CHAR_1 '1'
685 #define CHAR_2 '2'
686 #define CHAR_3 '3'
687 #define CHAR_4 '4'
688 #define CHAR_5 '5'
689 #define CHAR_6 '6'
690 #define CHAR_7 '7'
691 #define CHAR_8 '8'
692 #define CHAR_9 '9'
693 #define CHAR_COLON ':'
694 #define CHAR_SEMICOLON ';'
695 #define CHAR_LESS_THAN_SIGN '<'
696 #define CHAR_EQUALS_SIGN '='
697 #define CHAR_GREATER_THAN_SIGN '>'
698 #define CHAR_QUESTION_MARK '?'
699 #define CHAR_COMMERCIAL_AT '@'
700 #define CHAR_A 'A'
701 #define CHAR_B 'B'
702 #define CHAR_C 'C'
703 #define CHAR_D 'D'
704 #define CHAR_E 'E'
705 #define CHAR_F 'F'
706 #define CHAR_G 'G'
707 #define CHAR_H 'H'
708 #define CHAR_I 'I'
709 #define CHAR_J 'J'
710 #define CHAR_K 'K'
711 #define CHAR_L 'L'
712 #define CHAR_M 'M'
713 #define CHAR_N 'N'
714 #define CHAR_O 'O'
715 #define CHAR_P 'P'
716 #define CHAR_Q 'Q'
717 #define CHAR_R 'R'
718 #define CHAR_S 'S'
719 #define CHAR_T 'T'
720 #define CHAR_U 'U'
721 #define CHAR_V 'V'
722 #define CHAR_W 'W'
723 #define CHAR_X 'X'
724 #define CHAR_Y 'Y'
725 #define CHAR_Z 'Z'
726 #define CHAR_LEFT_SQUARE_BRACKET '['
727 #define CHAR_BACKSLASH '\\'
728 #define CHAR_RIGHT_SQUARE_BRACKET ']'
729 #define CHAR_CIRCUMFLEX_ACCENT '^'
730 #define CHAR_UNDERSCORE '_'
731 #define CHAR_GRAVE_ACCENT '`'
732 #define CHAR_a 'a'
733 #define CHAR_b 'b'
734 #define CHAR_c 'c'
735 #define CHAR_d 'd'
736 #define CHAR_e 'e'
737 #define CHAR_f 'f'
738 #define CHAR_g 'g'
739 #define CHAR_h 'h'
740 #define CHAR_i 'i'
741 #define CHAR_j 'j'
742 #define CHAR_k 'k'
743 #define CHAR_l 'l'
744 #define CHAR_m 'm'
745 #define CHAR_n 'n'
746 #define CHAR_o 'o'
747 #define CHAR_p 'p'
748 #define CHAR_q 'q'
749 #define CHAR_r 'r'
750 #define CHAR_s 's'
751 #define CHAR_t 't'
752 #define CHAR_u 'u'
753 #define CHAR_v 'v'
754 #define CHAR_w 'w'
755 #define CHAR_x 'x'
756 #define CHAR_y 'y'
757 #define CHAR_z 'z'
758 #define CHAR_LEFT_CURLY_BRACKET '{'
759 #define CHAR_VERTICAL_LINE '|'
760 #define CHAR_RIGHT_CURLY_BRACKET '}'
761 #define CHAR_TILDE '~'
762
763 #define STR_HT "\t"
764 #define STR_VT "\v"
765 #define STR_FF "\f"
766 #define STR_CR "\r"
767 #define STR_NL "\n"
768 #define STR_BS "\b"
769 #define STR_BEL "\a"
770 #ifdef EBCDIC
771 #define STR_ESC "\047"
772 #define STR_DEL "\007"
773 #else
774 #define STR_ESC "\033"
775 #define STR_DEL "\177"
776 #endif
777
778 #define STR_SPACE " "
779 #define STR_EXCLAMATION_MARK "!"
780 #define STR_QUOTATION_MARK "\""
781 #define STR_NUMBER_SIGN "#"
782 #define STR_DOLLAR_SIGN "$"
783 #define STR_PERCENT_SIGN "%"
784 #define STR_AMPERSAND "&"
785 #define STR_APOSTROPHE "'"
786 #define STR_LEFT_PARENTHESIS "("
787 #define STR_RIGHT_PARENTHESIS ")"
788 #define STR_ASTERISK "*"
789 #define STR_PLUS "+"
790 #define STR_COMMA ","
791 #define STR_MINUS "-"
792 #define STR_DOT "."
793 #define STR_SLASH "/"
794 #define STR_0 "0"
795 #define STR_1 "1"
796 #define STR_2 "2"
797 #define STR_3 "3"
798 #define STR_4 "4"
799 #define STR_5 "5"
800 #define STR_6 "6"
801 #define STR_7 "7"
802 #define STR_8 "8"
803 #define STR_9 "9"
804 #define STR_COLON ":"
805 #define STR_SEMICOLON ";"
806 #define STR_LESS_THAN_SIGN "<"
807 #define STR_EQUALS_SIGN "="
808 #define STR_GREATER_THAN_SIGN ">"
809 #define STR_QUESTION_MARK "?"
810 #define STR_COMMERCIAL_AT "@"
811 #define STR_A "A"
812 #define STR_B "B"
813 #define STR_C "C"
814 #define STR_D "D"
815 #define STR_E "E"
816 #define STR_F "F"
817 #define STR_G "G"
818 #define STR_H "H"
819 #define STR_I "I"
820 #define STR_J "J"
821 #define STR_K "K"
822 #define STR_L "L"
823 #define STR_M "M"
824 #define STR_N "N"
825 #define STR_O "O"
826 #define STR_P "P"
827 #define STR_Q "Q"
828 #define STR_R "R"
829 #define STR_S "S"
830 #define STR_T "T"
831 #define STR_U "U"
832 #define STR_V "V"
833 #define STR_W "W"
834 #define STR_X "X"
835 #define STR_Y "Y"
836 #define STR_Z "Z"
837 #define STR_LEFT_SQUARE_BRACKET "["
838 #define STR_BACKSLASH "\\"
839 #define STR_RIGHT_SQUARE_BRACKET "]"
840 #define STR_CIRCUMFLEX_ACCENT "^"
841 #define STR_UNDERSCORE "_"
842 #define STR_GRAVE_ACCENT "`"
843 #define STR_a "a"
844 #define STR_b "b"
845 #define STR_c "c"
846 #define STR_d "d"
847 #define STR_e "e"
848 #define STR_f "f"
849 #define STR_g "g"
850 #define STR_h "h"
851 #define STR_i "i"
852 #define STR_j "j"
853 #define STR_k "k"
854 #define STR_l "l"
855 #define STR_m "m"
856 #define STR_n "n"
857 #define STR_o "o"
858 #define STR_p "p"
859 #define STR_q "q"
860 #define STR_r "r"
861 #define STR_s "s"
862 #define STR_t "t"
863 #define STR_u "u"
864 #define STR_v "v"
865 #define STR_w "w"
866 #define STR_x "x"
867 #define STR_y "y"
868 #define STR_z "z"
869 #define STR_LEFT_CURLY_BRACKET "{"
870 #define STR_VERTICAL_LINE "|"
871 #define STR_RIGHT_CURLY_BRACKET "}"
872 #define STR_TILDE "~"
873
874 #define STRING_ACCEPT0 "ACCEPT\0"
875 #define STRING_COMMIT0 "COMMIT\0"
876 #define STRING_F0 "F\0"
877 #define STRING_FAIL0 "FAIL\0"
878 #define STRING_MARK0 "MARK\0"
879 #define STRING_PRUNE0 "PRUNE\0"
880 #define STRING_SKIP0 "SKIP\0"
881 #define STRING_THEN "THEN"
882
883 #define STRING_alpha0 "alpha\0"
884 #define STRING_lower0 "lower\0"
885 #define STRING_upper0 "upper\0"
886 #define STRING_alnum0 "alnum\0"
887 #define STRING_ascii0 "ascii\0"
888 #define STRING_blank0 "blank\0"
889 #define STRING_cntrl0 "cntrl\0"
890 #define STRING_digit0 "digit\0"
891 #define STRING_graph0 "graph\0"
892 #define STRING_print0 "print\0"
893 #define STRING_punct0 "punct\0"
894 #define STRING_space0 "space\0"
895 #define STRING_word0 "word\0"
896 #define STRING_xdigit "xdigit"
897
898 #define STRING_DEFINE "DEFINE"
899
900 #define STRING_CR_RIGHTPAR "CR)"
901 #define STRING_LF_RIGHTPAR "LF)"
902 #define STRING_CRLF_RIGHTPAR "CRLF)"
903 #define STRING_ANY_RIGHTPAR "ANY)"
904 #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
905 #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
906 #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
907 #define STRING_UTF8_RIGHTPAR "UTF8)"
908
909 #else /* SUPPORT_UTF8 */
910
911 /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
912 works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
913 only. */
914
915 #define CHAR_HT '\011'
916 #define CHAR_VT '\013'
917 #define CHAR_FF '\014'
918 #define CHAR_CR '\015'
919 #define CHAR_NL '\012'
920 #define CHAR_BS '\010'
921 #define CHAR_BEL '\007'
922 #define CHAR_ESC '\033'
923 #define CHAR_DEL '\177'
924
925 #define CHAR_SPACE '\040'
926 #define CHAR_EXCLAMATION_MARK '\041'
927 #define CHAR_QUOTATION_MARK '\042'
928 #define CHAR_NUMBER_SIGN '\043'
929 #define CHAR_DOLLAR_SIGN '\044'
930 #define CHAR_PERCENT_SIGN '\045'
931 #define CHAR_AMPERSAND '\046'
932 #define CHAR_APOSTROPHE '\047'
933 #define CHAR_LEFT_PARENTHESIS '\050'
934 #define CHAR_RIGHT_PARENTHESIS '\051'
935 #define CHAR_ASTERISK '\052'
936 #define CHAR_PLUS '\053'
937 #define CHAR_COMMA '\054'
938 #define CHAR_MINUS '\055'
939 #define CHAR_DOT '\056'
940 #define CHAR_SLASH '\057'
941 #define CHAR_0 '\060'
942 #define CHAR_1 '\061'
943 #define CHAR_2 '\062'
944 #define CHAR_3 '\063'
945 #define CHAR_4 '\064'
946 #define CHAR_5 '\065'
947 #define CHAR_6 '\066'
948 #define CHAR_7 '\067'
949 #define CHAR_8 '\070'
950 #define CHAR_9 '\071'
951 #define CHAR_COLON '\072'
952 #define CHAR_SEMICOLON '\073'
953 #define CHAR_LESS_THAN_SIGN '\074'
954 #define CHAR_EQUALS_SIGN '\075'
955 #define CHAR_GREATER_THAN_SIGN '\076'
956 #define CHAR_QUESTION_MARK '\077'
957 #define CHAR_COMMERCIAL_AT '\100'
958 #define CHAR_A '\101'
959 #define CHAR_B '\102'
960 #define CHAR_C '\103'
961 #define CHAR_D '\104'
962 #define CHAR_E '\105'
963 #define CHAR_F '\106'
964 #define CHAR_G '\107'
965 #define CHAR_H '\110'
966 #define CHAR_I '\111'
967 #define CHAR_J '\112'
968 #define CHAR_K '\113'
969 #define CHAR_L '\114'
970 #define CHAR_M '\115'
971 #define CHAR_N '\116'
972 #define CHAR_O '\117'
973 #define CHAR_P '\120'
974 #define CHAR_Q '\121'
975 #define CHAR_R '\122'
976 #define CHAR_S '\123'
977 #define CHAR_T '\124'
978 #define CHAR_U '\125'
979 #define CHAR_V '\126'
980 #define CHAR_W '\127'
981 #define CHAR_X '\130'
982 #define CHAR_Y '\131'
983 #define CHAR_Z '\132'
984 #define CHAR_LEFT_SQUARE_BRACKET '\133'
985 #define CHAR_BACKSLASH '\134'
986 #define CHAR_RIGHT_SQUARE_BRACKET '\135'
987 #define CHAR_CIRCUMFLEX_ACCENT '\136'
988 #define CHAR_UNDERSCORE '\137'
989 #define CHAR_GRAVE_ACCENT '\140'
990 #define CHAR_a '\141'
991 #define CHAR_b '\142'
992 #define CHAR_c '\143'
993 #define CHAR_d '\144'
994 #define CHAR_e '\145'
995 #define CHAR_f '\146'
996 #define CHAR_g '\147'
997 #define CHAR_h '\150'
998 #define CHAR_i '\151'
999 #define CHAR_j '\152'
1000 #define CHAR_k '\153'
1001 #define CHAR_l '\154'
1002 #define CHAR_m '\155'
1003 #define CHAR_n '\156'
1004 #define CHAR_o '\157'
1005 #define CHAR_p '\160'
1006 #define CHAR_q '\161'
1007 #define CHAR_r '\162'
1008 #define CHAR_s '\163'
1009 #define CHAR_t '\164'
1010 #define CHAR_u '\165'
1011 #define CHAR_v '\166'
1012 #define CHAR_w '\167'
1013 #define CHAR_x '\170'
1014 #define CHAR_y '\171'
1015 #define CHAR_z '\172'
1016 #define CHAR_LEFT_CURLY_BRACKET '\173'
1017 #define CHAR_VERTICAL_LINE '\174'
1018 #define CHAR_RIGHT_CURLY_BRACKET '\175'
1019 #define CHAR_TILDE '\176'
1020
1021 #define STR_HT "\011"
1022 #define STR_VT "\013"
1023 #define STR_FF "\014"
1024 #define STR_CR "\015"
1025 #define STR_NL "\012"
1026 #define STR_BS "\010"
1027 #define STR_BEL "\007"
1028 #define STR_ESC "\033"
1029 #define STR_DEL "\177"
1030
1031 #define STR_SPACE "\040"
1032 #define STR_EXCLAMATION_MARK "\041"
1033 #define STR_QUOTATION_MARK "\042"
1034 #define STR_NUMBER_SIGN "\043"
1035 #define STR_DOLLAR_SIGN "\044"
1036 #define STR_PERCENT_SIGN "\045"
1037 #define STR_AMPERSAND "\046"
1038 #define STR_APOSTROPHE "\047"
1039 #define STR_LEFT_PARENTHESIS "\050"
1040 #define STR_RIGHT_PARENTHESIS "\051"
1041 #define STR_ASTERISK "\052"
1042 #define STR_PLUS "\053"
1043 #define STR_COMMA "\054"
1044 #define STR_MINUS "\055"
1045 #define STR_DOT "\056"
1046 #define STR_SLASH "\057"
1047 #define STR_0 "\060"
1048 #define STR_1 "\061"
1049 #define STR_2 "\062"
1050 #define STR_3 "\063"
1051 #define STR_4 "\064"
1052 #define STR_5 "\065"
1053 #define STR_6 "\066"
1054 #define STR_7 "\067"
1055 #define STR_8 "\070"
1056 #define STR_9 "\071"
1057 #define STR_COLON "\072"
1058 #define STR_SEMICOLON "\073"
1059 #define STR_LESS_THAN_SIGN "\074"
1060 #define STR_EQUALS_SIGN "\075"
1061 #define STR_GREATER_THAN_SIGN "\076"
1062 #define STR_QUESTION_MARK "\077"
1063 #define STR_COMMERCIAL_AT "\100"
1064 #define STR_A "\101"
1065 #define STR_B "\102"
1066 #define STR_C "\103"
1067 #define STR_D "\104"
1068 #define STR_E "\105"
1069 #define STR_F "\106"
1070 #define STR_G "\107"
1071 #define STR_H "\110"
1072 #define STR_I "\111"
1073 #define STR_J "\112"
1074 #define STR_K "\113"
1075 #define STR_L "\114"
1076 #define STR_M "\115"
1077 #define STR_N "\116"
1078 #define STR_O "\117"
1079 #define STR_P "\120"
1080 #define STR_Q "\121"
1081 #define STR_R "\122"
1082 #define STR_S "\123"
1083 #define STR_T "\124"
1084 #define STR_U "\125"
1085 #define STR_V "\126"
1086 #define STR_W "\127"
1087 #define STR_X "\130"
1088 #define STR_Y "\131"
1089 #define STR_Z "\132"
1090 #define STR_LEFT_SQUARE_BRACKET "\133"
1091 #define STR_BACKSLASH "\134"
1092 #define STR_RIGHT_SQUARE_BRACKET "\135"
1093 #define STR_CIRCUMFLEX_ACCENT "\136"
1094 #define STR_UNDERSCORE "\137"
1095 #define STR_GRAVE_ACCENT "\140"
1096 #define STR_a "\141"
1097 #define STR_b "\142"
1098 #define STR_c "\143"
1099 #define STR_d "\144"
1100 #define STR_e "\145"
1101 #define STR_f "\146"
1102 #define STR_g "\147"
1103 #define STR_h "\150"
1104 #define STR_i "\151"
1105 #define STR_j "\152"
1106 #define STR_k "\153"
1107 #define STR_l "\154"
1108 #define STR_m "\155"
1109 #define STR_n "\156"
1110 #define STR_o "\157"
1111 #define STR_p "\160"
1112 #define STR_q "\161"
1113 #define STR_r "\162"
1114 #define STR_s "\163"
1115 #define STR_t "\164"
1116 #define STR_u "\165"
1117 #define STR_v "\166"
1118 #define STR_w "\167"
1119 #define STR_x "\170"
1120 #define STR_y "\171"
1121 #define STR_z "\172"
1122 #define STR_LEFT_CURLY_BRACKET "\173"
1123 #define STR_VERTICAL_LINE "\174"
1124 #define STR_RIGHT_CURLY_BRACKET "\175"
1125 #define STR_TILDE "\176"
1126
1127 #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1128 #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1129 #define STRING_F0 STR_F "\0"
1130 #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
1131 #define STRING_MARK0 STR_M STR_A STR_R STR_K "\0"
1132 #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
1133 #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
1134 #define STRING_THEN STR_T STR_H STR_E STR_N
1135
1136 #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
1137 #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
1138 #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
1139 #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
1140 #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
1141 #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
1142 #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
1143 #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
1144 #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
1145 #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
1146 #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
1147 #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
1148 #define STRING_word0 STR_w STR_o STR_r STR_d "\0"
1149 #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
1150
1151 #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
1152
1153 #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
1154 #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
1155 #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1156 #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1157 #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1158 #define STRING_BSR_ANYCRLF_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1159 #define STRING_BSR_UNICODE_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS
1160 #define STRING_UTF8_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1161
1162 #endif /* SUPPORT_UTF8 */
1163
1164 /* Escape items that are just an encoding of a particular data value. */
1165
1166 #ifndef ESC_e
1167 #define ESC_e CHAR_ESC
1168 #endif
1169
1170 #ifndef ESC_f
1171 #define ESC_f CHAR_FF
1172 #endif
1173
1174 #ifndef ESC_n
1175 #define ESC_n CHAR_NL
1176 #endif
1177
1178 #ifndef ESC_r
1179 #define ESC_r CHAR_CR
1180 #endif
1181
1182 /* We can't officially use ESC_t because it is a POSIX reserved identifier
1183 (presumably because of all the others like size_t). */
1184
1185 #ifndef ESC_tee
1186 #define ESC_tee CHAR_HT
1187 #endif
1188
1189 /* Codes for different types of Unicode property */
1190
1191 #define PT_ANY 0 /* Any property - matches all chars */
1192 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
1193 #define PT_GC 2 /* General characteristic (e.g. L) */
1194 #define PT_PC 3 /* Particular characteristic (e.g. Lu) */
1195 #define PT_SC 4 /* Script (e.g. Han) */
1196
1197 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1198 contain UTF-8 characters with values greater than 255. */
1199
1200 #define XCL_NOT 0x01 /* Flag: this is a negative class */
1201 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
1202
1203 #define XCL_END 0 /* Marks end of individual items */
1204 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
1205 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
1206 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
1207 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
1208
1209 /* These are escaped items that aren't just an encoding of a particular data
1210 value such as \n. They must have non-zero values, as check_escape() returns
1211 their negation. Also, they must appear in the same order as in the opcode
1212 definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
1213 corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1214 used for [^] in JavaScript compatibility mode. In non-DOTALL mode, "." behaves
1215 like \N.
1216
1217 The final escape must be ESC_REF as subsequent values are used for
1218 backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
1219 greater than ESC_b and less than ESC_Z to detect the types that may be
1220 repeated. These are the types that consume characters. If any new escapes are
1221 put in between that don't consume a character, that code will have to change.
1222 */
1223
1224 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1225 ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1226 ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_g, ESC_k,
1227 ESC_REF };
1228
1229
1230 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1231 OP_EOD must correspond in order to the list of escapes immediately above.
1232
1233 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1234 that follow must also be updated to match. There are also tables called
1235 "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1236
1237 enum {
1238 OP_END, /* 0 End of pattern */
1239
1240 /* Values corresponding to backslashed metacharacters */
1241
1242 OP_SOD, /* 1 Start of data: \A */
1243 OP_SOM, /* 2 Start of match (subject + offset): \G */
1244 OP_SET_SOM, /* 3 Set start of match (\K) */
1245 OP_NOT_WORD_BOUNDARY, /* 4 \B */
1246 OP_WORD_BOUNDARY, /* 5 \b */
1247 OP_NOT_DIGIT, /* 6 \D */
1248 OP_DIGIT, /* 7 \d */
1249 OP_NOT_WHITESPACE, /* 8 \S */
1250 OP_WHITESPACE, /* 9 \s */
1251 OP_NOT_WORDCHAR, /* 10 \W */
1252 OP_WORDCHAR, /* 11 \w */
1253 OP_ANY, /* 12 Match any character except newline */
1254 OP_ALLANY, /* 13 Match any character */
1255 OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1256 OP_NOTPROP, /* 15 \P (not Unicode property) */
1257 OP_PROP, /* 16 \p (Unicode property) */
1258 OP_ANYNL, /* 17 \R (any newline sequence) */
1259 OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
1260 OP_HSPACE, /* 19 \h (horizontal whitespace) */
1261 OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
1262 OP_VSPACE, /* 21 \v (vertical whitespace) */
1263 OP_EXTUNI, /* 22 \X (extended Unicode sequence */
1264 OP_EODN, /* 23 End of data or \n at end of data: \Z. */
1265 OP_EOD, /* 24 End of data: \z */
1266
1267 OP_OPT, /* 25 Set runtime options */
1268 OP_CIRC, /* 26 Start of line - varies with multiline switch */
1269 OP_DOLL, /* 27 End of line - varies with multiline switch */
1270 OP_CHAR, /* 28 Match one character, casefully */
1271 OP_CHARNC, /* 29 Match one character, caselessly */
1272 OP_NOT, /* 30 Match one character, not the following one */
1273
1274 OP_STAR, /* 31 The maximizing and minimizing versions of */
1275 OP_MINSTAR, /* 32 these six opcodes must come in pairs, with */
1276 OP_PLUS, /* 33 the minimizing one second. */
1277 OP_MINPLUS, /* 34 This first set applies to single characters.*/
1278 OP_QUERY, /* 35 */
1279 OP_MINQUERY, /* 36 */
1280
1281 OP_UPTO, /* 37 From 0 to n matches */
1282 OP_MINUPTO, /* 38 */
1283 OP_EXACT, /* 39 Exactly n matches */
1284
1285 OP_POSSTAR, /* 40 Possessified star */
1286 OP_POSPLUS, /* 41 Possessified plus */
1287 OP_POSQUERY, /* 42 Posesssified query */
1288 OP_POSUPTO, /* 43 Possessified upto */
1289
1290 OP_NOTSTAR, /* 44 The maximizing and minimizing versions of */
1291 OP_NOTMINSTAR, /* 45 these six opcodes must come in pairs, with */
1292 OP_NOTPLUS, /* 46 the minimizing one second. They must be in */
1293 OP_NOTMINPLUS, /* 47 exactly the same order as those above. */
1294 OP_NOTQUERY, /* 48 This set applies to "not" single characters. */
1295 OP_NOTMINQUERY, /* 49 */
1296
1297 OP_NOTUPTO, /* 50 From 0 to n matches */
1298 OP_NOTMINUPTO, /* 51 */
1299 OP_NOTEXACT, /* 52 Exactly n matches */
1300
1301 OP_NOTPOSSTAR, /* 53 Possessified versions */
1302 OP_NOTPOSPLUS, /* 54 */
1303 OP_NOTPOSQUERY, /* 55 */
1304 OP_NOTPOSUPTO, /* 56 */
1305
1306 OP_TYPESTAR, /* 57 The maximizing and minimizing versions of */
1307 OP_TYPEMINSTAR, /* 58 these six opcodes must come in pairs, with */
1308 OP_TYPEPLUS, /* 59 the minimizing one second. These codes must */
1309 OP_TYPEMINPLUS, /* 60 be in exactly the same order as those above. */
1310 OP_TYPEQUERY, /* 61 This set applies to character types such as \d */
1311 OP_TYPEMINQUERY, /* 62 */
1312
1313 OP_TYPEUPTO, /* 63 From 0 to n matches */
1314 OP_TYPEMINUPTO, /* 64 */
1315 OP_TYPEEXACT, /* 65 Exactly n matches */
1316
1317 OP_TYPEPOSSTAR, /* 66 Possessified versions */
1318 OP_TYPEPOSPLUS, /* 67 */
1319 OP_TYPEPOSQUERY, /* 68 */
1320 OP_TYPEPOSUPTO, /* 69 */
1321
1322 OP_CRSTAR, /* 70 The maximizing and minimizing versions of */
1323 OP_CRMINSTAR, /* 71 all these opcodes must come in pairs, with */
1324 OP_CRPLUS, /* 72 the minimizing one second. These codes must */
1325 OP_CRMINPLUS, /* 73 be in exactly the same order as those above. */
1326 OP_CRQUERY, /* 74 These are for character classes and back refs */
1327 OP_CRMINQUERY, /* 75 */
1328 OP_CRRANGE, /* 76 These are different to the three sets above. */
1329 OP_CRMINRANGE, /* 77 */
1330
1331 OP_CLASS, /* 78 Match a character class, chars < 256 only */
1332 OP_NCLASS, /* 79 Same, but the bitmap was created from a negative
1333 class - the difference is relevant only when a UTF-8
1334 character > 255 is encountered. */
1335
1336 OP_XCLASS, /* 80 Extended class for handling UTF-8 chars within the
1337 class. This does both positive and negative. */
1338
1339 OP_REF, /* 81 Match a back reference */
1340 OP_RECURSE, /* 82 Match a numbered subpattern (possibly recursive) */
1341 OP_CALLOUT, /* 83 Call out to external function if provided */
1342
1343 OP_ALT, /* 84 Start of alternation */
1344 OP_KET, /* 85 End of group that doesn't have an unbounded repeat */
1345 OP_KETRMAX, /* 86 These two must remain together and in this */
1346 OP_KETRMIN, /* 87 order. They are for groups the repeat for ever. */
1347
1348 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
1349
1350 OP_ASSERT, /* 88 Positive lookahead */
1351 OP_ASSERT_NOT, /* 89 Negative lookahead */
1352 OP_ASSERTBACK, /* 90 Positive lookbehind */
1353 OP_ASSERTBACK_NOT, /* 91 Negative lookbehind */
1354 OP_REVERSE, /* 92 Move pointer back - used in lookbehind assertions */
1355
1356 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
1357 as there's a test for >= ONCE for a subpattern that isn't an assertion. */
1358
1359 OP_ONCE, /* 93 Atomic group */
1360 OP_BRA, /* 94 Start of non-capturing bracket */
1361 OP_CBRA, /* 95 Start of capturing bracket */
1362 OP_COND, /* 96 Conditional group */
1363
1364 /* These three must follow the previous three, in the same order. There's a
1365 check for >= SBRA to distinguish the two sets. */
1366
1367 OP_SBRA, /* 97 Start of non-capturing bracket, check empty */
1368 OP_SCBRA, /* 98 Start of capturing bracket, check empty */
1369 OP_SCOND, /* 99 Conditional group, check empty */
1370
1371 /* The next two pairs must (respectively) be kept together. */
1372
1373 OP_CREF, /* 100 Used to hold a capture number as condition */
1374 OP_NCREF, /* 101 Same, but generaged by a name reference*/
1375 OP_RREF, /* 102 Used to hold a recursion number as condition */
1376 OP_NRREF, /* 103 Same, but generaged by a name reference*/
1377 OP_DEF, /* 104 The DEFINE condition */
1378
1379 OP_BRAZERO, /* 105 These two must remain together and in this */
1380 OP_BRAMINZERO, /* 106 order. */
1381
1382 /* These are backtracking control verbs */
1383
1384 OP_MARK, /* 107 always has an argument */
1385 OP_PRUNE, /* 108 */
1386 OP_PRUNE_ARG, /* 109 same, but with argument */
1387 OP_SKIP, /* 110 */
1388 OP_SKIP_ARG, /* 111 same, but with argument */
1389 OP_THEN, /* 112 */
1390 OP_THEN_ARG, /* 113 same, but with argument */
1391 OP_COMMIT, /* 114 */
1392
1393 /* These are forced failure and success verbs */
1394
1395 OP_FAIL, /* 115 */
1396 OP_ACCEPT, /* 116 */
1397 OP_CLOSE, /* 117 Used before OP_ACCEPT to close open captures */
1398
1399 /* This is used to skip a subpattern with a {0} quantifier */
1400
1401 OP_SKIPZERO, /* 118 */
1402
1403 /* This is not an opcode, but is used to check that tables indexed by opcode
1404 are the correct length, in order to catch updating errors - there have been
1405 some in the past. */
1406
1407 OP_TABLE_LENGTH
1408 };
1409
1410 /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
1411 definitions that follow must also be updated to match. There are also tables
1412 called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1413
1414
1415 /* This macro defines textual names for all the opcodes. These are used only
1416 for debugging. The macro is referenced only in pcre_printint.c. */
1417
1418 #define OP_NAME_LIST \
1419 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
1420 "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
1421 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
1422 "extuni", "\\Z", "\\z", \
1423 "Opt", "^", "$", "char", "charnc", "not", \
1424 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1425 "*+","++", "?+", "{", \
1426 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1427 "*+","++", "?+", "{", \
1428 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1429 "*+","++", "?+", "{", \
1430 "*", "*?", "+", "+?", "?", "??", "{", "{", \
1431 "class", "nclass", "xclass", "Ref", "Recurse", "Callout", \
1432 "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
1433 "AssertB", "AssertB not", "Reverse", \
1434 "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond", \
1435 "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def", \
1436 "Brazero", "Braminzero", \
1437 "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \
1438 "*THEN", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT", \
1439 "Close", "Skip zero"
1440
1441
1442 /* This macro defines the length of fixed length operations in the compiled
1443 regex. The lengths are used when searching for specific things, and also in the
1444 debugging printing of a compiled regex. We use a macro so that it can be
1445 defined close to the definitions of the opcodes themselves.
1446
1447 As things have been extended, some of these are no longer fixed lenths, but are
1448 minima instead. For example, the length of a single-character repeat may vary
1449 in UTF-8 mode. The code that uses this table must know about such things. */
1450
1451 #define OP_LENGTHS \
1452 1, /* End */ \
1453 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
1454 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
1455 1, 1, 1, /* Any, AllAny, Anybyte */ \
1456 3, 3, /* \P, \p */ \
1457 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1458 1, /* \X */ \
1459 1, 1, 2, 1, 1, /* \Z, \z, Opt, ^, $ */ \
1460 2, /* Char - the minimum length */ \
1461 2, /* Charnc - the minimum length */ \
1462 2, /* not */ \
1463 /* Positive single-char repeats ** These are */ \
1464 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
1465 4, 4, 4, /* upto, minupto, exact ** UTF-8 mode */ \
1466 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
1467 /* Negative single-char repeats - only for chars < 256 */ \
1468 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
1469 4, 4, 4, /* NOT upto, minupto, exact */ \
1470 2, 2, 2, 4, /* Possessive *, +, ?, upto */ \
1471 /* Positive type repeats */ \
1472 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
1473 4, 4, 4, /* Type upto, minupto, exact */ \
1474 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
1475 /* Character class & ref repeats */ \
1476 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1477 5, 5, /* CRRANGE, CRMINRANGE */ \
1478 33, /* CLASS */ \
1479 33, /* NCLASS */ \
1480 0, /* XCLASS - variable length */ \
1481 3, /* REF */ \
1482 1+LINK_SIZE, /* RECURSE */ \
1483 2+2*LINK_SIZE, /* CALLOUT */ \
1484 1+LINK_SIZE, /* Alt */ \
1485 1+LINK_SIZE, /* Ket */ \
1486 1+LINK_SIZE, /* KetRmax */ \
1487 1+LINK_SIZE, /* KetRmin */ \
1488 1+LINK_SIZE, /* Assert */ \
1489 1+LINK_SIZE, /* Assert not */ \
1490 1+LINK_SIZE, /* Assert behind */ \
1491 1+LINK_SIZE, /* Assert behind not */ \
1492 1+LINK_SIZE, /* Reverse */ \
1493 1+LINK_SIZE, /* ONCE */ \
1494 1+LINK_SIZE, /* BRA */ \
1495 3+LINK_SIZE, /* CBRA */ \
1496 1+LINK_SIZE, /* COND */ \
1497 1+LINK_SIZE, /* SBRA */ \
1498 3+LINK_SIZE, /* SCBRA */ \
1499 1+LINK_SIZE, /* SCOND */ \
1500 3, 3, /* CREF, NCREF */ \
1501 3, 3, /* RREF, NRREF */ \
1502 1, /* DEF */ \
1503 1, 1, /* BRAZERO, BRAMINZERO */ \
1504 3, 1, 3, /* MARK, PRUNE, PRUNE_ARG, */ \
1505 1, 3, 1, 3, /* SKIP, SKIP_ARG, THEN, THEN_ARG, */ \
1506 1, 1, 1, 3, 1 /* COMMIT, FAIL, ACCEPT, CLOSE, SKIPZERO */
1507
1508
1509 /* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion"
1510 condition. */
1511
1512 #define RREF_ANY 0xffff
1513
1514 /* Compile time error code numbers. They are given names so that they can more
1515 easily be tracked. When a new number is added, the table called eint in
1516 pcreposix.c must be updated. */
1517
1518 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
1519 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
1520 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
1521 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1522 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1523 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1524 ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERRCOUNT };
1525
1526 /* The real format of the start of the pcre block; the index of names and the
1527 code vector run on as long as necessary after the end. We store an explicit
1528 offset to the name table so that if a regex is compiled on one host, saved, and
1529 then run on another where the size of pointers is different, all might still
1530 be well. For the case of compiled-on-4 and run-on-8, we include an extra
1531 pointer that is always NULL. For future-proofing, a few dummy fields were
1532 originally included - even though you can never get this planning right - but
1533 there is only one left now.
1534
1535 NOTE NOTE NOTE:
1536 Because people can now save and re-use compiled patterns, any additions to this
1537 structure should be made at the end, and something earlier (e.g. a new
1538 flag in the options or one of the dummy fields) should indicate that the new
1539 fields are present. Currently PCRE always sets the dummy fields to zero.
1540 NOTE NOTE NOTE
1541 */
1542
1543 typedef struct real_pcre {
1544 pcre_uint32 magic_number;
1545 pcre_uint32 size; /* Total that was malloced */
1546 pcre_uint32 options; /* Public options */
1547 pcre_uint16 flags; /* Private flags */
1548 pcre_uint16 dummy1; /* For future use */
1549 pcre_uint16 top_bracket;
1550 pcre_uint16 top_backref;
1551 pcre_uint16 first_byte;
1552 pcre_uint16 req_byte;
1553 pcre_uint16 name_table_offset; /* Offset to name table that follows */
1554 pcre_uint16 name_entry_size; /* Size of any name items */
1555 pcre_uint16 name_count; /* Number of name items */
1556 pcre_uint16 ref_count; /* Reference count */
1557
1558 const unsigned char *tables; /* Pointer to tables or NULL for std */
1559 const unsigned char *nullpad; /* NULL padding */
1560 } real_pcre;
1561
1562 /* The format of the block used to store data from pcre_study(). The same
1563 remark (see NOTE above) about extending this structure applies. */
1564
1565 typedef struct pcre_study_data {
1566 pcre_uint32 size; /* Total that was malloced */
1567 pcre_uint32 flags; /* Private flags */
1568 uschar start_bits[32]; /* Starting char bits */
1569 pcre_uint32 minlength; /* Minimum subject length */
1570 } pcre_study_data;
1571
1572 /* Structure for building a chain of open capturing subpatterns during
1573 compiling, so that instructions to close them can be compiled when (*ACCEPT) is
1574 encountered. This is also used to identify subpatterns that contain recursive
1575 back references to themselves, so that they can be made atomic. */
1576
1577 typedef struct open_capitem {
1578 struct open_capitem *next; /* Chain link */
1579 pcre_uint16 number; /* Capture number */
1580 pcre_uint16 flag; /* Set TRUE if recursive back ref */
1581 } open_capitem;
1582
1583 /* Structure for passing "static" information around between the functions
1584 doing the compiling, so that they are thread-safe. */
1585
1586 typedef struct compile_data {
1587 const uschar *lcc; /* Points to lower casing table */
1588 const uschar *fcc; /* Points to case-flipping table */
1589 const uschar *cbits; /* Points to character type table */
1590 const uschar *ctypes; /* Points to table of type maps */
1591 const uschar *start_workspace;/* The start of working space */
1592 const uschar *start_code; /* The start of the compiled code */
1593 const uschar *start_pattern; /* The start of the pattern */
1594 const uschar *end_pattern; /* The end of the pattern */
1595 open_capitem *open_caps; /* Chain of open capture items */
1596 uschar *hwm; /* High watermark of workspace */
1597 uschar *name_table; /* The name/number table */
1598 int names_found; /* Number of entries so far */
1599 int name_entry_size; /* Size of each entry */
1600 int bracount; /* Count of capturing parens as we compile */
1601 int final_bracount; /* Saved value after first pass */
1602 int top_backref; /* Maximum back reference */
1603 unsigned int backref_map; /* Bitmap of low back refs */
1604 int external_options; /* External (initial) options */
1605 int external_flags; /* External flag bits to be set */
1606 int req_varyopt; /* "After variable item" flag for reqbyte */
1607 BOOL had_accept; /* (*ACCEPT) encountered */
1608 BOOL check_lookbehind; /* Lookbehinds need later checking */
1609 int nltype; /* Newline type */
1610 int nllen; /* Newline string length */
1611 uschar nl[4]; /* Newline string when fixed length */
1612 } compile_data;
1613
1614 /* Structure for maintaining a chain of pointers to the currently incomplete
1615 branches, for testing for left recursion. */
1616
1617 typedef struct branch_chain {
1618 struct branch_chain *outer;
1619 uschar *current_branch;
1620 } branch_chain;
1621
1622 /* Structure for items in a linked list that represents an explicit recursive
1623 call within the pattern. */
1624
1625 typedef struct recursion_info {
1626 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
1627 int group_num; /* Number of group that was called */
1628 const uschar *after_call; /* "Return value": points after the call in the expr */
1629 int *offset_save; /* Pointer to start of saved offsets */
1630 int saved_max; /* Number of saved offsets */
1631 int save_offset_top; /* Current value of offset_top */
1632 } recursion_info;
1633
1634 /* Structure for building a chain of data for holding the values of the subject
1635 pointer at the start of each subpattern, so as to detect when an empty string
1636 has been matched by a subpattern - to break infinite loops. */
1637
1638 typedef struct eptrblock {
1639 struct eptrblock *epb_prev;
1640 USPTR epb_saved_eptr;
1641 } eptrblock;
1642
1643
1644 /* Structure for passing "static" information around between the functions
1645 doing traditional NFA matching, so that they are thread-safe. */
1646
1647 typedef struct match_data {
1648 unsigned long int match_call_count; /* As it says */
1649 unsigned long int match_limit; /* As it says */
1650 unsigned long int match_limit_recursion; /* As it says */
1651 int *offset_vector; /* Offset vector */
1652 int offset_end; /* One past the end */
1653 int offset_max; /* The maximum usable for return data */
1654 int nltype; /* Newline type */
1655 int nllen; /* Newline string length */
1656 int name_count; /* Number of names in name table */
1657 int name_entry_size; /* Size of entry in names table */
1658 uschar *name_table; /* Table of names */
1659 uschar nl[4]; /* Newline string when fixed */
1660 const uschar *lcc; /* Points to lower casing table */
1661 const uschar *ctypes; /* Points to table of type maps */
1662 BOOL offset_overflow; /* Set if too many extractions */
1663 BOOL notbol; /* NOTBOL flag */
1664 BOOL noteol; /* NOTEOL flag */
1665 BOOL utf8; /* UTF8 flag */
1666 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
1667 BOOL endonly; /* Dollar not before final \n */
1668 BOOL notempty; /* Empty string match not wanted */
1669 BOOL notempty_atstart; /* Empty string match at start not wanted */
1670 BOOL hitend; /* Hit the end of the subject at some point */
1671 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
1672 const uschar *start_code; /* For use when recursing */
1673 USPTR start_subject; /* Start of the subject string */
1674 USPTR end_subject; /* End of the subject string */
1675 USPTR start_match_ptr; /* Start of matched string */
1676 USPTR end_match_ptr; /* Subject position at end match */
1677 USPTR start_used_ptr; /* Earliest consulted character */
1678 int partial; /* PARTIAL options */
1679 int end_offset_top; /* Highwater mark at end of match */
1680 int capture_last; /* Most recent capture number */
1681 int start_offset; /* The start offset value */
1682 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1683 int eptrn; /* Next free eptrblock */
1684 recursion_info *recursive; /* Linked list of recursion data */
1685 void *callout_data; /* To pass back to callouts */
1686 const uschar *mark; /* Mark pointer to pass back */
1687 } match_data;
1688
1689 /* A similar structure is used for the same purpose by the DFA matching
1690 functions. */
1691
1692 typedef struct dfa_match_data {
1693 const uschar *start_code; /* Start of the compiled pattern */
1694 const uschar *start_subject; /* Start of the subject string */
1695 const uschar *end_subject; /* End of subject string */
1696 const uschar *start_used_ptr; /* Earliest consulted character */
1697 const uschar *tables; /* Character tables */
1698 int start_offset; /* The start offset value */
1699 int moptions; /* Match options */
1700 int poptions; /* Pattern options */
1701 int nltype; /* Newline type */
1702 int nllen; /* Newline string length */
1703 uschar nl[4]; /* Newline string when fixed */
1704 void *callout_data; /* To pass back to callouts */
1705 } dfa_match_data;
1706
1707 /* Bit definitions for entries in the pcre_ctypes table. */
1708
1709 #define ctype_space 0x01
1710 #define ctype_letter 0x02
1711 #define ctype_digit 0x04
1712 #define ctype_xdigit 0x08
1713 #define ctype_word 0x10 /* alphanumeric or '_' */
1714 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1715
1716 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1717 of bits for a class map. Some classes are built by combining these tables. */
1718
1719 #define cbit_space 0 /* [:space:] or \s */
1720 #define cbit_xdigit 32 /* [:xdigit:] */
1721 #define cbit_digit 64 /* [:digit:] or \d */
1722 #define cbit_upper 96 /* [:upper:] */
1723 #define cbit_lower 128 /* [:lower:] */
1724 #define cbit_word 160 /* [:word:] or \w */
1725 #define cbit_graph 192 /* [:graph:] */
1726 #define cbit_print 224 /* [:print:] */
1727 #define cbit_punct 256 /* [:punct:] */
1728 #define cbit_cntrl 288 /* [:cntrl:] */
1729 #define cbit_length 320 /* Length of the cbits table */
1730
1731 /* Offsets of the various tables from the base tables pointer, and
1732 total length. */
1733
1734 #define lcc_offset 0
1735 #define fcc_offset 256
1736 #define cbits_offset 512
1737 #define ctypes_offset (cbits_offset + cbit_length)
1738 #define tables_length (ctypes_offset + 256)
1739
1740 /* Layout of the UCP type table that translates property names into types and
1741 codes. Each entry used to point directly to a name, but to reduce the number of
1742 relocations in shared libraries, it now has an offset into a single string
1743 instead. */
1744
1745 typedef struct {
1746 pcre_uint16 name_offset;
1747 pcre_uint16 type;
1748 pcre_uint16 value;
1749 } ucp_type_table;
1750
1751
1752 /* Internal shared data tables. These are tables that are used by more than one
1753 of the exported public functions. They have to be "external" in the C sense,
1754 but are not part of the PCRE public API. The data for these tables is in the
1755 pcre_tables.c module. */
1756
1757 extern const int _pcre_utf8_table1[];
1758 extern const int _pcre_utf8_table2[];
1759 extern const int _pcre_utf8_table3[];
1760 extern const uschar _pcre_utf8_table4[];
1761
1762 extern const int _pcre_utf8_table1_size;
1763
1764 extern const char _pcre_utt_names[];
1765 extern const ucp_type_table _pcre_utt[];
1766 extern const int _pcre_utt_size;
1767
1768 extern const uschar _pcre_default_tables[];
1769
1770 extern const uschar _pcre_OP_lengths[];
1771
1772
1773 /* Internal shared functions. These are functions that are used by more than
1774 one of the exported public functions. They have to be "external" in the C
1775 sense, but are not part of the PCRE public API. */
1776
1777 extern const uschar *_pcre_find_bracket(const uschar *, BOOL, int);
1778 extern BOOL _pcre_is_newline(USPTR, int, USPTR, int *, BOOL);
1779 extern int _pcre_ord2utf8(int, uschar *);
1780 extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1781 const pcre_study_data *, pcre_study_data *);
1782 extern int _pcre_valid_utf8(USPTR, int);
1783 extern BOOL _pcre_was_newline(USPTR, int, USPTR, int *, BOOL);
1784 extern BOOL _pcre_xclass(int, const uschar *);
1785
1786
1787 /* Unicode character database (UCD) */
1788
1789 typedef struct {
1790 uschar script;
1791 uschar chartype;
1792 pcre_int32 other_case;
1793 } ucd_record;
1794
1795 extern const ucd_record _pcre_ucd_records[];
1796 extern const uschar _pcre_ucd_stage1[];
1797 extern const pcre_uint16 _pcre_ucd_stage2[];
1798 extern const int _pcre_ucp_gentype[];
1799
1800
1801 /* UCD access macros */
1802
1803 #define UCD_BLOCK_SIZE 128
1804 #define GET_UCD(ch) (_pcre_ucd_records + \
1805 _pcre_ucd_stage2[_pcre_ucd_stage1[(ch) / UCD_BLOCK_SIZE] * \
1806 UCD_BLOCK_SIZE + ch % UCD_BLOCK_SIZE])
1807
1808 #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
1809 #define UCD_SCRIPT(ch) GET_UCD(ch)->script
1810 #define UCD_CATEGORY(ch) _pcre_ucp_gentype[UCD_CHARTYPE(ch)]
1811 #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case)
1812
1813 #endif
1814
1815 /* End of pcre_internal.h */

Properties

Name Value
svn:eol-style native
svn:keywords "Author Date Id Revision Url"

webmaster@exim.org
ViewVC Help
Powered by ViewVC 1.1.12