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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) 1997-2012 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_" or "_pcre16_" depending on
44 the PRIV macro. */
45
46 #ifndef PCRE_INTERNAL_H
47 #define PCRE_INTERNAL_H
48
49 /* Define PCRE_DEBUG to get debugging output on stdout. */
50
51 #if 0
52 #define PCRE_DEBUG
53 #endif
54
55 /* PCRE is compiled as an 8 bit library if it is not requested otherwise. */
56 #ifndef COMPILE_PCRE16
57 #define COMPILE_PCRE8
58 #endif
59
60 /* If SUPPORT_UCP is defined, SUPPORT_UTF must also be defined. The
61 "configure" script ensures this, but not everybody uses "configure". */
62
63 #if defined SUPPORT_UCP && !(defined SUPPORT_UTF)
64 #define SUPPORT_UTF 1
65 #endif
66
67 /* We define SUPPORT_UTF if SUPPORT_UTF8 is enabled for compatibility
68 reasons with existing code. */
69
70 #if defined SUPPORT_UTF8 && !(defined SUPPORT_UTF)
71 #define SUPPORT_UTF 1
72 #endif
73
74 /* Fixme: SUPPORT_UTF8 should be eventually disappear from the code.
75 Until then we define it if SUPPORT_UTF is defined. */
76
77 #if defined SUPPORT_UTF && !(defined SUPPORT_UTF8)
78 #define SUPPORT_UTF8 1
79 #endif
80
81 /* We do not support both EBCDIC and UTF-8/16 at the same time. The "configure"
82 script prevents both being selected, but not everybody uses "configure". */
83
84 #if defined EBCDIC && defined SUPPORT_UTF
85 #error The use of both EBCDIC and SUPPORT_UTF8/16 is not supported.
86 #endif
87
88 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
89 inline, and there are *still* stupid compilers about that don't like indented
90 pre-processor statements, or at least there were when I first wrote this. After
91 all, it had only been about 10 years then...
92
93 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
94 be absolutely sure we get our version. */
95
96 #undef DPRINTF
97 #ifdef PCRE_DEBUG
98 #define DPRINTF(p) printf p
99 #else
100 #define DPRINTF(p) /* Nothing */
101 #endif
102
103
104 /* Standard C headers plus the external interface definition. The only time
105 setjmp and stdarg are used is when NO_RECURSE is set. */
106
107 #include <ctype.h>
108 #include <limits.h>
109 #include <stddef.h>
110 #include <stdio.h>
111 #include <stdlib.h>
112 #include <string.h>
113
114 /* When compiling a DLL for Windows, the exported symbols have to be declared
115 using some MS magic. I found some useful information on this web page:
116 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
117 information there, using __declspec(dllexport) without "extern" we have a
118 definition; with "extern" we have a declaration. The settings here override the
119 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
120 which is all that is needed for applications (they just import the symbols). We
121 use:
122
123 PCRE_EXP_DECL for declarations
124 PCRE_EXP_DEFN for definitions of exported functions
125 PCRE_EXP_DATA_DEFN for definitions of exported variables
126
127 The reason for the two DEFN macros is that in non-Windows environments, one
128 does not want to have "extern" before variable definitions because it leads to
129 compiler warnings. So we distinguish between functions and variables. In
130 Windows, the two should always be the same.
131
132 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
133 which is an application, but needs to import this file in order to "peek" at
134 internals, can #include pcre.h first to get an application's-eye view.
135
136 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
137 special-purpose environments) might want to stick other stuff in front of
138 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
139 PCRE_EXP_DATA_DEFN only if they are not already set. */
140
141 #ifndef PCRE_EXP_DECL
142 # ifdef _WIN32
143 # ifndef PCRE_STATIC
144 # define PCRE_EXP_DECL extern __declspec(dllexport)
145 # define PCRE_EXP_DEFN __declspec(dllexport)
146 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
147 # else
148 # define PCRE_EXP_DECL extern
149 # define PCRE_EXP_DEFN
150 # define PCRE_EXP_DATA_DEFN
151 # endif
152 # else
153 # ifdef __cplusplus
154 # define PCRE_EXP_DECL extern "C"
155 # else
156 # define PCRE_EXP_DECL extern
157 # endif
158 # ifndef PCRE_EXP_DEFN
159 # define PCRE_EXP_DEFN PCRE_EXP_DECL
160 # endif
161 # ifndef PCRE_EXP_DATA_DEFN
162 # define PCRE_EXP_DATA_DEFN
163 # endif
164 # endif
165 #endif
166
167 /* When compiling with the MSVC compiler, it is sometimes necessary to include
168 a "calling convention" before exported function names. (This is secondhand
169 information; I know nothing about MSVC myself). For example, something like
170
171 void __cdecl function(....)
172
173 might be needed. In order so make this easy, all the exported functions have
174 PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
175 set, we ensure here that it has no effect. */
176
177 #ifndef PCRE_CALL_CONVENTION
178 #define PCRE_CALL_CONVENTION
179 #endif
180
181 /* We need to have types that specify unsigned 8, 16 and 32-bit integers. We
182 cannot determine these outside the compilation (e.g. by running a program as
183 part of "configure") because PCRE is often cross-compiled for use on other
184 systems. Instead we make use of the maximum sizes that are available at
185 preprocessor time in standard C environments. */
186
187 typedef unsigned char pcre_uint8;
188
189 #if USHRT_MAX == 65535
190 typedef unsigned short pcre_uint16;
191 typedef short pcre_int16;
192 #elif UINT_MAX == 65535
193 typedef unsigned int pcre_uint16;
194 typedef int pcre_int16;
195 #else
196 #error Cannot determine a type for 16-bit unsigned integers
197 #endif
198
199 #if UINT_MAX == 4294967295
200 typedef unsigned int pcre_uint32;
201 typedef int pcre_int32;
202 #elif ULONG_MAX == 4294967295
203 typedef unsigned long int pcre_uint32;
204 typedef long int pcre_int32;
205 #else
206 #error Cannot determine a type for 32-bit unsigned integers
207 #endif
208
209 /* When checking for integer overflow in pcre_compile(), we need to handle
210 large integers. If a 64-bit integer type is available, we can use that.
211 Otherwise we have to cast to double, which of course requires floating point
212 arithmetic. Handle this by defining a macro for the appropriate type. If
213 stdint.h is available, include it; it may define INT64_MAX. Systems that do not
214 have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
215 by "configure". */
216
217 #if HAVE_STDINT_H
218 #include <stdint.h>
219 #elif HAVE_INTTYPES_H
220 #include <inttypes.h>
221 #endif
222
223 #if defined INT64_MAX || defined int64_t
224 #define INT64_OR_DOUBLE int64_t
225 #else
226 #define INT64_OR_DOUBLE double
227 #endif
228
229 /* All character handling must be done as unsigned characters. Otherwise there
230 are problems with top-bit-set characters and functions such as isspace().
231 However, we leave the interface to the outside world as char * or short *,
232 because that should make things easier for callers. This character type is
233 called pcre_uchar.
234
235 The IN_UCHARS macro multiply its argument with the byte size of the current
236 pcre_uchar type. Useful for memcpy and such operations, whose require the
237 byte size of their input/output buffers.
238
239 The MAX_255 macro checks whether its pcre_uchar input is less than 256.
240
241 The TABLE_GET macro is designed for accessing elements of tables whose contain
242 exactly 256 items. When the character is able to contain more than 256
243 items, some check is needed before accessing these tables.
244 */
245
246 #ifdef COMPILE_PCRE8
247
248 typedef unsigned char pcre_uchar;
249 #define IN_UCHARS(x) (x)
250 #define MAX_255(c) 1
251 #define TABLE_GET(c, table, default) ((table)[c])
252
253 #else
254
255 #ifdef COMPILE_PCRE16
256 #if USHRT_MAX != 65535
257 /* This is a warning message. Change PCRE_UCHAR16 to a 16 bit data type in
258 pcre.h(.in) and disable (comment out) this message. */
259 #error Warning: PCRE_UCHAR16 is not a 16 bit data type.
260 #endif
261
262 typedef pcre_uint16 pcre_uchar;
263 #define IN_UCHARS(x) ((x) << 1)
264 #define MAX_255(c) ((c) <= 255u)
265 #define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
266
267 #else
268 #error Unsupported compiling mode
269 #endif /* COMPILE_PCRE16 */
270
271 #endif /* COMPILE_PCRE8 */
272
273 /* This is an unsigned int value that no character can ever have. UTF-8
274 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
275 0x0010ffff). */
276
277 #define NOTACHAR 0xffffffff
278
279 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
280 "any" and "anycrlf" at present). The following macros are used to package up
281 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
282 modules to indicate in which datablock the parameters exist, and what the
283 start/end of string field names are. */
284
285 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
286 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
287 #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
288
289 /* This macro checks for a newline at the given position */
290
291 #define IS_NEWLINE(p) \
292 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
293 ((p) < NLBLOCK->PSEND && \
294 PRIV(is_newline)((p), NLBLOCK->nltype, NLBLOCK->PSEND, \
295 &(NLBLOCK->nllen), utf)) \
296 : \
297 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
298 (p)[0] == NLBLOCK->nl[0] && \
299 (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
300 ) \
301 )
302
303 /* This macro checks for a newline immediately preceding the given position */
304
305 #define WAS_NEWLINE(p) \
306 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
307 ((p) > NLBLOCK->PSSTART && \
308 PRIV(was_newline)((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
309 &(NLBLOCK->nllen), utf)) \
310 : \
311 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
312 (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
313 (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
314 ) \
315 )
316
317 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
318 with a custom type. This makes it possible, for example, to allow pcre_exec()
319 to process subject strings that are discontinuous by using a smart pointer
320 class. It must always be possible to inspect all of the subject string in
321 pcre_exec() because of the way it backtracks. Two macros are required in the
322 normal case, for sign-unspecified and unsigned char pointers. The former is
323 used for the external interface and appears in pcre.h, which is why its name
324 must begin with PCRE_. */
325
326 #ifdef CUSTOM_SUBJECT_PTR
327 #define PCRE_PUCHAR CUSTOM_SUBJECT_PTR
328 #else
329 #define PCRE_PUCHAR const pcre_uchar *
330 #endif
331
332 /* Include the public PCRE header and the definitions of UCP character property
333 values. */
334
335 #include "pcre.h"
336 #include "ucp.h"
337
338 /* When compiling for use with the Virtual Pascal compiler, these functions
339 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
340 option on the command line. */
341
342 #ifdef VPCOMPAT
343 #define strlen(s) _strlen(s)
344 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
345 #define memcmp(s,c,n) _memcmp(s,c,n)
346 #define memcpy(d,s,n) _memcpy(d,s,n)
347 #define memmove(d,s,n) _memmove(d,s,n)
348 #define memset(s,c,n) _memset(s,c,n)
349 #else /* VPCOMPAT */
350
351 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
352 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
353 is set. Otherwise, include an emulating function for those systems that have
354 neither (there some non-Unix environments where this is the case). */
355
356 #ifndef HAVE_MEMMOVE
357 #undef memmove /* some systems may have a macro */
358 #ifdef HAVE_BCOPY
359 #define memmove(a, b, c) bcopy(b, a, c)
360 #else /* HAVE_BCOPY */
361 static void *
362 pcre_memmove(void *d, const void *s, size_t n)
363 {
364 size_t i;
365 unsigned char *dest = (unsigned char *)d;
366 const unsigned char *src = (const unsigned char *)s;
367 if (dest > src)
368 {
369 dest += n;
370 src += n;
371 for (i = 0; i < n; ++i) *(--dest) = *(--src);
372 return (void *)dest;
373 }
374 else
375 {
376 for (i = 0; i < n; ++i) *dest++ = *src++;
377 return (void *)(dest - n);
378 }
379 }
380 #define memmove(a, b, c) pcre_memmove(a, b, c)
381 #endif /* not HAVE_BCOPY */
382 #endif /* not HAVE_MEMMOVE */
383 #endif /* not VPCOMPAT */
384
385
386 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
387 in big-endian order) by default. These are used, for example, to link from the
388 start of a subpattern to its alternatives and its end. The use of 2 bytes per
389 offset limits the size of the compiled regex to around 64K, which is big enough
390 for almost everybody. However, I received a request for an even bigger limit.
391 For this reason, and also to make the code easier to maintain, the storing and
392 loading of offsets from the byte string is now handled by the macros that are
393 defined here.
394
395 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
396 the config.h file, but can be overridden by using -D on the command line. This
397 is automated on Unix systems via the "configure" command. */
398
399 #ifdef COMPILE_PCRE8
400
401 #if LINK_SIZE == 2
402
403 #define PUT(a,n,d) \
404 (a[n] = (d) >> 8), \
405 (a[(n)+1] = (d) & 255)
406
407 #define GET(a,n) \
408 (((a)[n] << 8) | (a)[(n)+1])
409
410 #define MAX_PATTERN_SIZE (1 << 16)
411
412
413 #elif LINK_SIZE == 3
414
415 #define PUT(a,n,d) \
416 (a[n] = (d) >> 16), \
417 (a[(n)+1] = (d) >> 8), \
418 (a[(n)+2] = (d) & 255)
419
420 #define GET(a,n) \
421 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
422
423 #define MAX_PATTERN_SIZE (1 << 24)
424
425
426 #elif LINK_SIZE == 4
427
428 #define PUT(a,n,d) \
429 (a[n] = (d) >> 24), \
430 (a[(n)+1] = (d) >> 16), \
431 (a[(n)+2] = (d) >> 8), \
432 (a[(n)+3] = (d) & 255)
433
434 #define GET(a,n) \
435 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
436
437 /* Keep it positive */
438 #define MAX_PATTERN_SIZE (1 << 30)
439
440 #else
441 #error LINK_SIZE must be either 2, 3, or 4
442 #endif
443
444 #else /* COMPILE_PCRE8 */
445
446 #ifdef COMPILE_PCRE16
447
448 #if LINK_SIZE == 2
449
450 #undef LINK_SIZE
451 #define LINK_SIZE 1
452
453 #define PUT(a,n,d) \
454 (a[n] = (d))
455
456 #define GET(a,n) \
457 (a[n])
458
459 #define MAX_PATTERN_SIZE (1 << 16)
460
461 #elif LINK_SIZE == 3 || LINK_SIZE == 4
462
463 #undef LINK_SIZE
464 #define LINK_SIZE 2
465
466 #define PUT(a,n,d) \
467 (a[n] = (d) >> 16), \
468 (a[(n)+1] = (d) & 65535)
469
470 #define GET(a,n) \
471 (((a)[n] << 16) | (a)[(n)+1])
472
473 /* Keep it positive */
474 #define MAX_PATTERN_SIZE (1 << 30)
475
476 #else
477 #error LINK_SIZE must be either 2, 3, or 4
478 #endif
479
480 #else
481 #error Unsupported compiling mode
482 #endif /* COMPILE_PCRE16 */
483
484 #endif /* COMPILE_PCRE8 */
485
486 /* Convenience macro defined in terms of the others */
487
488 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
489
490
491 /* PCRE uses some other 2-byte quantities that do not change when the size of
492 offsets changes. There are used for repeat counts and for other things such as
493 capturing parenthesis numbers in back references. */
494
495 #ifdef COMPILE_PCRE8
496
497 #define IMM2_SIZE 2
498
499 #define PUT2(a,n,d) \
500 a[n] = (d) >> 8; \
501 a[(n)+1] = (d) & 255
502
503 #define GET2(a,n) \
504 (((a)[n] << 8) | (a)[(n)+1])
505
506 #else /* COMPILE_PCRE8 */
507
508 #ifdef COMPILE_PCRE16
509
510 #define IMM2_SIZE 1
511
512 #define PUT2(a,n,d) \
513 a[n] = d
514
515 #define GET2(a,n) \
516 a[n]
517
518 #else
519 #error Unsupported compiling mode
520 #endif /* COMPILE_PCRE16 */
521
522 #endif /* COMPILE_PCRE8 */
523
524 #define PUT2INC(a,n,d) PUT2(a,n,d), a += IMM2_SIZE
525
526 /* The maximum length of a MARK name is currently one data unit; it may be
527 changed in future to be a fixed number of bytes or to depend on LINK_SIZE. */
528
529 #define MAX_MARK ((1 << (sizeof(pcre_uchar)*8)) - 1)
530
531 /* When UTF encoding is being used, a character is no longer just a single
532 character. The macros for character handling generate simple sequences when
533 used in character-mode, and more complicated ones for UTF characters.
534 GETCHARLENTEST and other macros are not used when UTF is not supported,
535 so they are not defined. To make sure they can never even appear when
536 UTF support is omitted, we don't even define them. */
537
538 #ifndef SUPPORT_UTF
539
540 /* #define MAX_VALUE_FOR_SINGLE_CHAR */
541 /* #define HAS_EXTRALEN(c) */
542 /* #define GET_EXTRALEN(c) */
543 /* #define NOT_FIRSTCHAR(c) */
544 #define GETCHAR(c, eptr) c = *eptr;
545 #define GETCHARTEST(c, eptr) c = *eptr;
546 #define GETCHARINC(c, eptr) c = *eptr++;
547 #define GETCHARINCTEST(c, eptr) c = *eptr++;
548 #define GETCHARLEN(c, eptr, len) c = *eptr;
549 /* #define GETCHARLENTEST(c, eptr, len) */
550 /* #define BACKCHAR(eptr) */
551 /* #define FORWARDCHAR(eptr) */
552 /* #define ACROSSCHAR(condition, eptr, action) */
553
554 #else /* SUPPORT_UTF */
555
556 #ifdef COMPILE_PCRE8
557
558 /* These macros were originally written in the form of loops that used data
559 from the tables whose names start with PRIV(utf8_table). They were rewritten by
560 a user so as not to use loops, because in some environments this gives a
561 significant performance advantage, and it seems never to do any harm. */
562
563 /* Tells the biggest code point which can be encoded as a single character. */
564
565 #define MAX_VALUE_FOR_SINGLE_CHAR 127
566
567 /* Tests whether the code point needs extra characters to decode. */
568
569 #define HAS_EXTRALEN(c) ((c) >= 0xc0)
570
571 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
572 Otherwise it has an undefined behaviour. */
573
574 #define GET_EXTRALEN(c) (PRIV(utf8_table4)[(c) & 0x3f])
575
576 /* Returns TRUE, if the given character is not the first character
577 of a UTF sequence. */
578
579 #define NOT_FIRSTCHAR(c) (((c) & 0xc0) == 0x80)
580
581 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
582 advancing the pointer. */
583
584 #define GETUTF8(c, eptr) \
585 { \
586 if ((c & 0x20) == 0) \
587 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
588 else if ((c & 0x10) == 0) \
589 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
590 else if ((c & 0x08) == 0) \
591 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
592 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
593 else if ((c & 0x04) == 0) \
594 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
595 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
596 (eptr[4] & 0x3f); \
597 else \
598 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
599 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
600 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
601 }
602
603 /* Get the next UTF-8 character, not advancing the pointer. This is called when
604 we know we are in UTF-8 mode. */
605
606 #define GETCHAR(c, eptr) \
607 c = *eptr; \
608 if (c >= 0xc0) GETUTF8(c, eptr);
609
610 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
611 pointer. */
612
613 #define GETCHARTEST(c, eptr) \
614 c = *eptr; \
615 if (utf && c >= 0xc0) GETUTF8(c, eptr);
616
617 /* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
618 the pointer. */
619
620 #define GETUTF8INC(c, eptr) \
621 { \
622 if ((c & 0x20) == 0) \
623 c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
624 else if ((c & 0x10) == 0) \
625 { \
626 c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
627 eptr += 2; \
628 } \
629 else if ((c & 0x08) == 0) \
630 { \
631 c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
632 ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
633 eptr += 3; \
634 } \
635 else if ((c & 0x04) == 0) \
636 { \
637 c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
638 ((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
639 (eptr[3] & 0x3f); \
640 eptr += 4; \
641 } \
642 else \
643 { \
644 c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
645 ((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
646 ((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
647 eptr += 5; \
648 } \
649 }
650
651 /* Get the next UTF-8 character, advancing the pointer. This is called when we
652 know we are in UTF-8 mode. */
653
654 #define GETCHARINC(c, eptr) \
655 c = *eptr++; \
656 if (c >= 0xc0) GETUTF8INC(c, eptr);
657
658 /* Get the next character, testing for UTF-8 mode, and advancing the pointer.
659 This is called when we don't know if we are in UTF-8 mode. */
660
661 #define GETCHARINCTEST(c, eptr) \
662 c = *eptr++; \
663 if (utf && c >= 0xc0) GETUTF8INC(c, eptr);
664
665 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
666 advancing the pointer, incrementing the length. */
667
668 #define GETUTF8LEN(c, eptr, len) \
669 { \
670 if ((c & 0x20) == 0) \
671 { \
672 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
673 len++; \
674 } \
675 else if ((c & 0x10) == 0) \
676 { \
677 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
678 len += 2; \
679 } \
680 else if ((c & 0x08) == 0) \
681 {\
682 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
683 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
684 len += 3; \
685 } \
686 else if ((c & 0x04) == 0) \
687 { \
688 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
689 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
690 (eptr[4] & 0x3f); \
691 len += 4; \
692 } \
693 else \
694 {\
695 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
696 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
697 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
698 len += 5; \
699 } \
700 }
701
702 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
703 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
704
705 #define GETCHARLEN(c, eptr, len) \
706 c = *eptr; \
707 if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
708
709 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
710 pointer, incrementing length if there are extra bytes. This is called when we
711 do not know if we are in UTF-8 mode. */
712
713 #define GETCHARLENTEST(c, eptr, len) \
714 c = *eptr; \
715 if (utf && c >= 0xc0) GETUTF8LEN(c, eptr, len);
716
717 /* If the pointer is not at the start of a character, move it back until
718 it is. This is called only in UTF-8 mode - we don't put a test within the macro
719 because almost all calls are already within a block of UTF-8 only code. */
720
721 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
722
723 /* Same as above, just in the other direction. */
724 #define FORWARDCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr++
725
726 /* Same as above, but it allows a fully customizable form. */
727 #define ACROSSCHAR(condition, eptr, action) \
728 while((condition) && ((eptr) & 0xc0) == 0x80) action
729
730 #else /* COMPILE_PCRE8 */
731
732 #ifdef COMPILE_PCRE16
733
734 /* Tells the biggest code point which can be encoded as a single character. */
735
736 #define MAX_VALUE_FOR_SINGLE_CHAR 65535
737
738 /* Tests whether the code point needs extra characters to decode. */
739
740 #define HAS_EXTRALEN(c) (((c) & 0xfc00) == 0xd800)
741
742 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
743 Otherwise it has an undefined behaviour. */
744
745 #define GET_EXTRALEN(c) 1
746
747 /* Returns TRUE, if the given character is not the first character
748 of a UTF sequence. */
749
750 #define NOT_FIRSTCHAR(c) (((c) & 0xfc00) == 0xdc00)
751
752 /* Base macro to pick up the low surrogate of a UTF-16 character, not
753 advancing the pointer. */
754
755 #define GETUTF16(c, eptr) \
756 { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; }
757
758 /* Get the next UTF-16 character, not advancing the pointer. This is called when
759 we know we are in UTF-16 mode. */
760
761 #define GETCHAR(c, eptr) \
762 c = *eptr; \
763 if ((c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
764
765 /* Get the next UTF-16 character, testing for UTF-16 mode, and not advancing the
766 pointer. */
767
768 #define GETCHARTEST(c, eptr) \
769 c = *eptr; \
770 if (utf && (c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
771
772 /* Base macro to pick up the low surrogate of a UTF-16 character, advancing
773 the pointer. */
774
775 #define GETUTF16INC(c, eptr) \
776 { c = (((c & 0x3ff) << 10) | (*eptr++ & 0x3ff)) + 0x10000; }
777
778 /* Get the next UTF-16 character, advancing the pointer. This is called when we
779 know we are in UTF-16 mode. */
780
781 #define GETCHARINC(c, eptr) \
782 c = *eptr++; \
783 if ((c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
784
785 /* Get the next character, testing for UTF-16 mode, and advancing the pointer.
786 This is called when we don't know if we are in UTF-16 mode. */
787
788 #define GETCHARINCTEST(c, eptr) \
789 c = *eptr++; \
790 if (utf && (c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
791
792 /* Base macro to pick up the low surrogate of a UTF-16 character, not
793 advancing the pointer, incrementing the length. */
794
795 #define GETUTF16LEN(c, eptr, len) \
796 { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; len++; }
797
798 /* Get the next UTF-16 character, not advancing the pointer, incrementing
799 length if there is a low surrogate. This is called when we know we are in
800 UTF-16 mode. */
801
802 #define GETCHARLEN(c, eptr, len) \
803 c = *eptr; \
804 if ((c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
805
806 /* Get the next UTF-816character, testing for UTF-16 mode, not advancing the
807 pointer, incrementing length if there is a low surrogate. This is called when
808 we do not know if we are in UTF-16 mode. */
809
810 #define GETCHARLENTEST(c, eptr, len) \
811 c = *eptr; \
812 if (utf && (c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
813
814 /* If the pointer is not at the start of a character, move it back until
815 it is. This is called only in UTF-16 mode - we don't put a test within the
816 macro because almost all calls are already within a block of UTF-16 only
817 code. */
818
819 #define BACKCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr--
820
821 /* Same as above, just in the other direction. */
822 #define FORWARDCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr++
823
824 /* Same as above, but it allows a fully customizable form. */
825 #define ACROSSCHAR(condition, eptr, action) \
826 if ((condition) && ((eptr) & 0xfc00) == 0xdc00) action
827
828 #endif
829
830 #endif /* COMPILE_PCRE8 */
831
832 #endif /* SUPPORT_UTF */
833
834
835 /* In case there is no definition of offsetof() provided - though any proper
836 Standard C system should have one. */
837
838 #ifndef offsetof
839 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
840 #endif
841
842
843 /* Private flags containing information about the compiled regex. They used to
844 live at the top end of the options word, but that got almost full, so now they
845 are in a 16-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as
846 the restrictions on partial matching have been lifted. It remains for backwards
847 compatibility. */
848
849 #ifdef COMPILE_PCRE8
850 #define PCRE_MODE 0x0001 /* compiled in 8 bit mode */
851 #endif
852 #ifdef COMPILE_PCRE16
853 #define PCRE_MODE 0x0002 /* compiled in 16 bit mode */
854 #endif
855 #define PCRE_FIRSTSET 0x0010 /* first_char is set */
856 #define PCRE_FCH_CASELESS 0x0020 /* caseless first char */
857 #define PCRE_REQCHSET 0x0040 /* req_byte is set */
858 #define PCRE_RCH_CASELESS 0x0080 /* caseless requested char */
859 #define PCRE_STARTLINE 0x0100 /* start after \n for multiline */
860 #define PCRE_NOPARTIAL 0x0200 /* can't use partial with this regex */
861 #define PCRE_JCHANGED 0x0400 /* j option used in regex */
862 #define PCRE_HASCRORLF 0x0800 /* explicit \r or \n in pattern */
863 #define PCRE_HASTHEN 0x1000 /* pattern contains (*THEN) */
864
865 /* Flags for the "extra" block produced by pcre_study(). */
866
867 #define PCRE_STUDY_MAPPED 0x0001 /* a map of starting chars exists */
868 #define PCRE_STUDY_MINLEN 0x0002 /* a minimum length field exists */
869
870 /* Masks for identifying the public options that are permitted at compile
871 time, run time, or study time, respectively. */
872
873 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
874 PCRE_NEWLINE_ANYCRLF)
875
876 #define PUBLIC_COMPILE_OPTIONS \
877 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
878 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
879 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
880 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
881 PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE)
882
883 #define PUBLIC_EXEC_OPTIONS \
884 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
885 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
886 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
887
888 #define PUBLIC_DFA_EXEC_OPTIONS \
889 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
890 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
891 PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
892 PCRE_NO_START_OPTIMIZE)
893
894 #define PUBLIC_STUDY_OPTIONS \
895 (PCRE_STUDY_JIT_COMPILE|PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE| \
896 PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE)
897
898 /* Magic number to provide a small check against being handed junk. */
899
900 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
901
902 /* This variable is used to detect a loaded regular expression
903 in different endianness. */
904
905 #define REVERSED_MAGIC_NUMBER 0x45524350UL /* 'ERCP' */
906
907 /* Negative values for the firstchar and reqchar variables */
908
909 #define REQ_UNSET (-2)
910 #define REQ_NONE (-1)
911
912 /* The maximum remaining length of subject we are prepared to search for a
913 req_byte match. */
914
915 #define REQ_BYTE_MAX 1000
916
917 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
918 environments where these macros are defined elsewhere. Unfortunately, there
919 is no way to do the same for the typedef. */
920
921 typedef int BOOL;
922
923 #ifndef FALSE
924 #define FALSE 0
925 #define TRUE 1
926 #endif
927
928 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
929 character constants like '*' because the compiler would emit their EBCDIC code,
930 which is different from their ASCII/UTF-8 code. Instead we define macros for
931 the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
932 is enabled. When UTF-8 support is not enabled, the definitions use character
933 literals. Both character and string versions of each character are needed, and
934 there are some longer strings as well.
935
936 This means that, on EBCDIC platforms, the PCRE library can handle either
937 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
938 would need different lookups depending on whether PCRE_UTF8 was set or not.
939 This would make it impossible to use characters in switch/case statements,
940 which would reduce performance. For a theoretical use (which nobody has asked
941 for) in a minority area (EBCDIC platforms), this is not sensible. Any
942 application that did need both could compile two versions of the library, using
943 macros to give the functions distinct names. */
944
945 #ifndef SUPPORT_UTF
946
947 /* UTF-8 support is not enabled; use the platform-dependent character literals
948 so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
949
950 #define CHAR_HT '\t'
951 #define CHAR_VT '\v'
952 #define CHAR_FF '\f'
953 #define CHAR_CR '\r'
954 #define CHAR_NL '\n'
955 #define CHAR_BS '\b'
956 #define CHAR_BEL '\a'
957 #ifdef EBCDIC
958 #define CHAR_ESC '\047'
959 #define CHAR_DEL '\007'
960 #else
961 #define CHAR_ESC '\033'
962 #define CHAR_DEL '\177'
963 #endif
964
965 #define CHAR_SPACE ' '
966 #define CHAR_EXCLAMATION_MARK '!'
967 #define CHAR_QUOTATION_MARK '"'
968 #define CHAR_NUMBER_SIGN '#'
969 #define CHAR_DOLLAR_SIGN '$'
970 #define CHAR_PERCENT_SIGN '%'
971 #define CHAR_AMPERSAND '&'
972 #define CHAR_APOSTROPHE '\''
973 #define CHAR_LEFT_PARENTHESIS '('
974 #define CHAR_RIGHT_PARENTHESIS ')'
975 #define CHAR_ASTERISK '*'
976 #define CHAR_PLUS '+'
977 #define CHAR_COMMA ','
978 #define CHAR_MINUS '-'
979 #define CHAR_DOT '.'
980 #define CHAR_SLASH '/'
981 #define CHAR_0 '0'
982 #define CHAR_1 '1'
983 #define CHAR_2 '2'
984 #define CHAR_3 '3'
985 #define CHAR_4 '4'
986 #define CHAR_5 '5'
987 #define CHAR_6 '6'
988 #define CHAR_7 '7'
989 #define CHAR_8 '8'
990 #define CHAR_9 '9'
991 #define CHAR_COLON ':'
992 #define CHAR_SEMICOLON ';'
993 #define CHAR_LESS_THAN_SIGN '<'
994 #define CHAR_EQUALS_SIGN '='
995 #define CHAR_GREATER_THAN_SIGN '>'
996 #define CHAR_QUESTION_MARK '?'
997 #define CHAR_COMMERCIAL_AT '@'
998 #define CHAR_A 'A'
999 #define CHAR_B 'B'
1000 #define CHAR_C 'C'
1001 #define CHAR_D 'D'
1002 #define CHAR_E 'E'
1003 #define CHAR_F 'F'
1004 #define CHAR_G 'G'
1005 #define CHAR_H 'H'
1006 #define CHAR_I 'I'
1007 #define CHAR_J 'J'
1008 #define CHAR_K 'K'
1009 #define CHAR_L 'L'
1010 #define CHAR_M 'M'
1011 #define CHAR_N 'N'
1012 #define CHAR_O 'O'
1013 #define CHAR_P 'P'
1014 #define CHAR_Q 'Q'
1015 #define CHAR_R 'R'
1016 #define CHAR_S 'S'
1017 #define CHAR_T 'T'
1018 #define CHAR_U 'U'
1019 #define CHAR_V 'V'
1020 #define CHAR_W 'W'
1021 #define CHAR_X 'X'
1022 #define CHAR_Y 'Y'
1023 #define CHAR_Z 'Z'
1024 #define CHAR_LEFT_SQUARE_BRACKET '['
1025 #define CHAR_BACKSLASH '\\'
1026 #define CHAR_RIGHT_SQUARE_BRACKET ']'
1027 #define CHAR_CIRCUMFLEX_ACCENT '^'
1028 #define CHAR_UNDERSCORE '_'
1029 #define CHAR_GRAVE_ACCENT '`'
1030 #define CHAR_a 'a'
1031 #define CHAR_b 'b'
1032 #define CHAR_c 'c'
1033 #define CHAR_d 'd'
1034 #define CHAR_e 'e'
1035 #define CHAR_f 'f'
1036 #define CHAR_g 'g'
1037 #define CHAR_h 'h'
1038 #define CHAR_i 'i'
1039 #define CHAR_j 'j'
1040 #define CHAR_k 'k'
1041 #define CHAR_l 'l'
1042 #define CHAR_m 'm'
1043 #define CHAR_n 'n'
1044 #define CHAR_o 'o'
1045 #define CHAR_p 'p'
1046 #define CHAR_q 'q'
1047 #define CHAR_r 'r'
1048 #define CHAR_s 's'
1049 #define CHAR_t 't'
1050 #define CHAR_u 'u'
1051 #define CHAR_v 'v'
1052 #define CHAR_w 'w'
1053 #define CHAR_x 'x'
1054 #define CHAR_y 'y'
1055 #define CHAR_z 'z'
1056 #define CHAR_LEFT_CURLY_BRACKET '{'
1057 #define CHAR_VERTICAL_LINE '|'
1058 #define CHAR_RIGHT_CURLY_BRACKET '}'
1059 #define CHAR_TILDE '~'
1060
1061 #define STR_HT "\t"
1062 #define STR_VT "\v"
1063 #define STR_FF "\f"
1064 #define STR_CR "\r"
1065 #define STR_NL "\n"
1066 #define STR_BS "\b"
1067 #define STR_BEL "\a"
1068 #ifdef EBCDIC
1069 #define STR_ESC "\047"
1070 #define STR_DEL "\007"
1071 #else
1072 #define STR_ESC "\033"
1073 #define STR_DEL "\177"
1074 #endif
1075
1076 #define STR_SPACE " "
1077 #define STR_EXCLAMATION_MARK "!"
1078 #define STR_QUOTATION_MARK "\""
1079 #define STR_NUMBER_SIGN "#"
1080 #define STR_DOLLAR_SIGN "$"
1081 #define STR_PERCENT_SIGN "%"
1082 #define STR_AMPERSAND "&"
1083 #define STR_APOSTROPHE "'"
1084 #define STR_LEFT_PARENTHESIS "("
1085 #define STR_RIGHT_PARENTHESIS ")"
1086 #define STR_ASTERISK "*"
1087 #define STR_PLUS "+"
1088 #define STR_COMMA ","
1089 #define STR_MINUS "-"
1090 #define STR_DOT "."
1091 #define STR_SLASH "/"
1092 #define STR_0 "0"
1093 #define STR_1 "1"
1094 #define STR_2 "2"
1095 #define STR_3 "3"
1096 #define STR_4 "4"
1097 #define STR_5 "5"
1098 #define STR_6 "6"
1099 #define STR_7 "7"
1100 #define STR_8 "8"
1101 #define STR_9 "9"
1102 #define STR_COLON ":"
1103 #define STR_SEMICOLON ";"
1104 #define STR_LESS_THAN_SIGN "<"
1105 #define STR_EQUALS_SIGN "="
1106 #define STR_GREATER_THAN_SIGN ">"
1107 #define STR_QUESTION_MARK "?"
1108 #define STR_COMMERCIAL_AT "@"
1109 #define STR_A "A"
1110 #define STR_B "B"
1111 #define STR_C "C"
1112 #define STR_D "D"
1113 #define STR_E "E"
1114 #define STR_F "F"
1115 #define STR_G "G"
1116 #define STR_H "H"
1117 #define STR_I "I"
1118 #define STR_J "J"
1119 #define STR_K "K"
1120 #define STR_L "L"
1121 #define STR_M "M"
1122 #define STR_N "N"
1123 #define STR_O "O"
1124 #define STR_P "P"
1125 #define STR_Q "Q"
1126 #define STR_R "R"
1127 #define STR_S "S"
1128 #define STR_T "T"
1129 #define STR_U "U"
1130 #define STR_V "V"
1131 #define STR_W "W"
1132 #define STR_X "X"
1133 #define STR_Y "Y"
1134 #define STR_Z "Z"
1135 #define STR_LEFT_SQUARE_BRACKET "["
1136 #define STR_BACKSLASH "\\"
1137 #define STR_RIGHT_SQUARE_BRACKET "]"
1138 #define STR_CIRCUMFLEX_ACCENT "^"
1139 #define STR_UNDERSCORE "_"
1140 #define STR_GRAVE_ACCENT "`"
1141 #define STR_a "a"
1142 #define STR_b "b"
1143 #define STR_c "c"
1144 #define STR_d "d"
1145 #define STR_e "e"
1146 #define STR_f "f"
1147 #define STR_g "g"
1148 #define STR_h "h"
1149 #define STR_i "i"
1150 #define STR_j "j"
1151 #define STR_k "k"
1152 #define STR_l "l"
1153 #define STR_m "m"
1154 #define STR_n "n"
1155 #define STR_o "o"
1156 #define STR_p "p"
1157 #define STR_q "q"
1158 #define STR_r "r"
1159 #define STR_s "s"
1160 #define STR_t "t"
1161 #define STR_u "u"
1162 #define STR_v "v"
1163 #define STR_w "w"
1164 #define STR_x "x"
1165 #define STR_y "y"
1166 #define STR_z "z"
1167 #define STR_LEFT_CURLY_BRACKET "{"
1168 #define STR_VERTICAL_LINE "|"
1169 #define STR_RIGHT_CURLY_BRACKET "}"
1170 #define STR_TILDE "~"
1171
1172 #define STRING_ACCEPT0 "ACCEPT\0"
1173 #define STRING_COMMIT0 "COMMIT\0"
1174 #define STRING_F0 "F\0"
1175 #define STRING_FAIL0 "FAIL\0"
1176 #define STRING_MARK0 "MARK\0"
1177 #define STRING_PRUNE0 "PRUNE\0"
1178 #define STRING_SKIP0 "SKIP\0"
1179 #define STRING_THEN "THEN"
1180
1181 #define STRING_alpha0 "alpha\0"
1182 #define STRING_lower0 "lower\0"
1183 #define STRING_upper0 "upper\0"
1184 #define STRING_alnum0 "alnum\0"
1185 #define STRING_ascii0 "ascii\0"
1186 #define STRING_blank0 "blank\0"
1187 #define STRING_cntrl0 "cntrl\0"
1188 #define STRING_digit0 "digit\0"
1189 #define STRING_graph0 "graph\0"
1190 #define STRING_print0 "print\0"
1191 #define STRING_punct0 "punct\0"
1192 #define STRING_space0 "space\0"
1193 #define STRING_word0 "word\0"
1194 #define STRING_xdigit "xdigit"
1195
1196 #define STRING_DEFINE "DEFINE"
1197
1198 #define STRING_CR_RIGHTPAR "CR)"
1199 #define STRING_LF_RIGHTPAR "LF)"
1200 #define STRING_CRLF_RIGHTPAR "CRLF)"
1201 #define STRING_ANY_RIGHTPAR "ANY)"
1202 #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
1203 #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
1204 #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
1205 #ifdef COMPILE_PCRE8
1206 #define STRING_UTF_RIGHTPAR "UTF8)"
1207 #endif
1208 #ifdef COMPILE_PCRE16
1209 #define STRING_UTF_RIGHTPAR "UTF16)"
1210 #endif
1211 #define STRING_UCP_RIGHTPAR "UCP)"
1212 #define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)"
1213
1214 #else /* SUPPORT_UTF */
1215
1216 /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
1217 works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
1218 only. */
1219
1220 #define CHAR_HT '\011'
1221 #define CHAR_VT '\013'
1222 #define CHAR_FF '\014'
1223 #define CHAR_CR '\015'
1224 #define CHAR_NL '\012'
1225 #define CHAR_BS '\010'
1226 #define CHAR_BEL '\007'
1227 #define CHAR_ESC '\033'
1228 #define CHAR_DEL '\177'
1229
1230 #define CHAR_SPACE '\040'
1231 #define CHAR_EXCLAMATION_MARK '\041'
1232 #define CHAR_QUOTATION_MARK '\042'
1233 #define CHAR_NUMBER_SIGN '\043'
1234 #define CHAR_DOLLAR_SIGN '\044'
1235 #define CHAR_PERCENT_SIGN '\045'
1236 #define CHAR_AMPERSAND '\046'
1237 #define CHAR_APOSTROPHE '\047'
1238 #define CHAR_LEFT_PARENTHESIS '\050'
1239 #define CHAR_RIGHT_PARENTHESIS '\051'
1240 #define CHAR_ASTERISK '\052'
1241 #define CHAR_PLUS '\053'
1242 #define CHAR_COMMA '\054'
1243 #define CHAR_MINUS '\055'
1244 #define CHAR_DOT '\056'
1245 #define CHAR_SLASH '\057'
1246 #define CHAR_0 '\060'
1247 #define CHAR_1 '\061'
1248 #define CHAR_2 '\062'
1249 #define CHAR_3 '\063'
1250 #define CHAR_4 '\064'
1251 #define CHAR_5 '\065'
1252 #define CHAR_6 '\066'
1253 #define CHAR_7 '\067'
1254 #define CHAR_8 '\070'
1255 #define CHAR_9 '\071'
1256 #define CHAR_COLON '\072'
1257 #define CHAR_SEMICOLON '\073'
1258 #define CHAR_LESS_THAN_SIGN '\074'
1259 #define CHAR_EQUALS_SIGN '\075'
1260 #define CHAR_GREATER_THAN_SIGN '\076'
1261 #define CHAR_QUESTION_MARK '\077'
1262 #define CHAR_COMMERCIAL_AT '\100'
1263 #define CHAR_A '\101'
1264 #define CHAR_B '\102'
1265 #define CHAR_C '\103'
1266 #define CHAR_D '\104'
1267 #define CHAR_E '\105'
1268 #define CHAR_F '\106'
1269 #define CHAR_G '\107'
1270 #define CHAR_H '\110'
1271 #define CHAR_I '\111'
1272 #define CHAR_J '\112'
1273 #define CHAR_K '\113'
1274 #define CHAR_L '\114'
1275 #define CHAR_M '\115'
1276 #define CHAR_N '\116'
1277 #define CHAR_O '\117'
1278 #define CHAR_P '\120'
1279 #define CHAR_Q '\121'
1280 #define CHAR_R '\122'
1281 #define CHAR_S '\123'
1282 #define CHAR_T '\124'
1283 #define CHAR_U '\125'
1284 #define CHAR_V '\126'
1285 #define CHAR_W '\127'
1286 #define CHAR_X '\130'
1287 #define CHAR_Y '\131'
1288 #define CHAR_Z '\132'
1289 #define CHAR_LEFT_SQUARE_BRACKET '\133'
1290 #define CHAR_BACKSLASH '\134'
1291 #define CHAR_RIGHT_SQUARE_BRACKET '\135'
1292 #define CHAR_CIRCUMFLEX_ACCENT '\136'
1293 #define CHAR_UNDERSCORE '\137'
1294 #define CHAR_GRAVE_ACCENT '\140'
1295 #define CHAR_a '\141'
1296 #define CHAR_b '\142'
1297 #define CHAR_c '\143'
1298 #define CHAR_d '\144'
1299 #define CHAR_e '\145'
1300 #define CHAR_f '\146'
1301 #define CHAR_g '\147'
1302 #define CHAR_h '\150'
1303 #define CHAR_i '\151'
1304 #define CHAR_j '\152'
1305 #define CHAR_k '\153'
1306 #define CHAR_l '\154'
1307 #define CHAR_m '\155'
1308 #define CHAR_n '\156'
1309 #define CHAR_o '\157'
1310 #define CHAR_p '\160'
1311 #define CHAR_q '\161'
1312 #define CHAR_r '\162'
1313 #define CHAR_s '\163'
1314 #define CHAR_t '\164'
1315 #define CHAR_u '\165'
1316 #define CHAR_v '\166'
1317 #define CHAR_w '\167'
1318 #define CHAR_x '\170'
1319 #define CHAR_y '\171'
1320 #define CHAR_z '\172'
1321 #define CHAR_LEFT_CURLY_BRACKET '\173'
1322 #define CHAR_VERTICAL_LINE '\174'
1323 #define CHAR_RIGHT_CURLY_BRACKET '\175'
1324 #define CHAR_TILDE '\176'
1325
1326 #define STR_HT "\011"
1327 #define STR_VT "\013"
1328 #define STR_FF "\014"
1329 #define STR_CR "\015"
1330 #define STR_NL "\012"
1331 #define STR_BS "\010"
1332 #define STR_BEL "\007"
1333 #define STR_ESC "\033"
1334 #define STR_DEL "\177"
1335
1336 #define STR_SPACE "\040"
1337 #define STR_EXCLAMATION_MARK "\041"
1338 #define STR_QUOTATION_MARK "\042"
1339 #define STR_NUMBER_SIGN "\043"
1340 #define STR_DOLLAR_SIGN "\044"
1341 #define STR_PERCENT_SIGN "\045"
1342 #define STR_AMPERSAND "\046"
1343 #define STR_APOSTROPHE "\047"
1344 #define STR_LEFT_PARENTHESIS "\050"
1345 #define STR_RIGHT_PARENTHESIS "\051"
1346 #define STR_ASTERISK "\052"
1347 #define STR_PLUS "\053"
1348 #define STR_COMMA "\054"
1349 #define STR_MINUS "\055"
1350 #define STR_DOT "\056"
1351 #define STR_SLASH "\057"
1352 #define STR_0 "\060"
1353 #define STR_1 "\061"
1354 #define STR_2 "\062"
1355 #define STR_3 "\063"
1356 #define STR_4 "\064"
1357 #define STR_5 "\065"
1358 #define STR_6 "\066"
1359 #define STR_7 "\067"
1360 #define STR_8 "\070"
1361 #define STR_9 "\071"
1362 #define STR_COLON "\072"
1363 #define STR_SEMICOLON "\073"
1364 #define STR_LESS_THAN_SIGN "\074"
1365 #define STR_EQUALS_SIGN "\075"
1366 #define STR_GREATER_THAN_SIGN "\076"
1367 #define STR_QUESTION_MARK "\077"
1368 #define STR_COMMERCIAL_AT "\100"
1369 #define STR_A "\101"
1370 #define STR_B "\102"
1371 #define STR_C "\103"
1372 #define STR_D "\104"
1373 #define STR_E "\105"
1374 #define STR_F "\106"
1375 #define STR_G "\107"
1376 #define STR_H "\110"
1377 #define STR_I "\111"
1378 #define STR_J "\112"
1379 #define STR_K "\113"
1380 #define STR_L "\114"
1381 #define STR_M "\115"
1382 #define STR_N "\116"
1383 #define STR_O "\117"
1384 #define STR_P "\120"
1385 #define STR_Q "\121"
1386 #define STR_R "\122"
1387 #define STR_S "\123"
1388 #define STR_T "\124"
1389 #define STR_U "\125"
1390 #define STR_V "\126"
1391 #define STR_W "\127"
1392 #define STR_X "\130"
1393 #define STR_Y "\131"
1394 #define STR_Z "\132"
1395 #define STR_LEFT_SQUARE_BRACKET "\133"
1396 #define STR_BACKSLASH "\134"
1397 #define STR_RIGHT_SQUARE_BRACKET "\135"
1398 #define STR_CIRCUMFLEX_ACCENT "\136"
1399 #define STR_UNDERSCORE "\137"
1400 #define STR_GRAVE_ACCENT "\140"
1401 #define STR_a "\141"
1402 #define STR_b "\142"
1403 #define STR_c "\143"
1404 #define STR_d "\144"
1405 #define STR_e "\145"
1406 #define STR_f "\146"
1407 #define STR_g "\147"
1408 #define STR_h "\150"
1409 #define STR_i "\151"
1410 #define STR_j "\152"
1411 #define STR_k "\153"
1412 #define STR_l "\154"
1413 #define STR_m "\155"
1414 #define STR_n "\156"
1415 #define STR_o "\157"
1416 #define STR_p "\160"
1417 #define STR_q "\161"
1418 #define STR_r "\162"
1419 #define STR_s "\163"
1420 #define STR_t "\164"
1421 #define STR_u "\165"
1422 #define STR_v "\166"
1423 #define STR_w "\167"
1424 #define STR_x "\170"
1425 #define STR_y "\171"
1426 #define STR_z "\172"
1427 #define STR_LEFT_CURLY_BRACKET "\173"
1428 #define STR_VERTICAL_LINE "\174"
1429 #define STR_RIGHT_CURLY_BRACKET "\175"
1430 #define STR_TILDE "\176"
1431
1432 #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1433 #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1434 #define STRING_F0 STR_F "\0"
1435 #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
1436 #define STRING_MARK0 STR_M STR_A STR_R STR_K "\0"
1437 #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
1438 #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
1439 #define STRING_THEN STR_T STR_H STR_E STR_N
1440
1441 #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
1442 #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
1443 #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
1444 #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
1445 #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
1446 #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
1447 #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
1448 #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
1449 #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
1450 #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
1451 #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
1452 #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
1453 #define STRING_word0 STR_w STR_o STR_r STR_d "\0"
1454 #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
1455
1456 #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
1457
1458 #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
1459 #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
1460 #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1461 #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1462 #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1463 #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
1464 #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
1465 #ifdef COMPILE_PCRE8
1466 #define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1467 #endif
1468 #ifdef COMPILE_PCRE16
1469 #define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_1 STR_6 STR_RIGHT_PARENTHESIS
1470 #endif
1471 #define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
1472 #define STRING_NO_START_OPT_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_S STR_T STR_A STR_R STR_T STR_UNDERSCORE STR_O STR_P STR_T STR_RIGHT_PARENTHESIS
1473
1474 #endif /* SUPPORT_UTF */
1475
1476 /* Escape items that are just an encoding of a particular data value. */
1477
1478 #ifndef ESC_e
1479 #define ESC_e CHAR_ESC
1480 #endif
1481
1482 #ifndef ESC_f
1483 #define ESC_f CHAR_FF
1484 #endif
1485
1486 #ifndef ESC_n
1487 #define ESC_n CHAR_NL
1488 #endif
1489
1490 #ifndef ESC_r
1491 #define ESC_r CHAR_CR
1492 #endif
1493
1494 /* We can't officially use ESC_t because it is a POSIX reserved identifier
1495 (presumably because of all the others like size_t). */
1496
1497 #ifndef ESC_tee
1498 #define ESC_tee CHAR_HT
1499 #endif
1500
1501 /* Codes for different types of Unicode property */
1502
1503 #define PT_ANY 0 /* Any property - matches all chars */
1504 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
1505 #define PT_GC 2 /* Specified general characteristic (e.g. L) */
1506 #define PT_PC 3 /* Specified particular characteristic (e.g. Lu) */
1507 #define PT_SC 4 /* Script (e.g. Han) */
1508 #define PT_ALNUM 5 /* Alphanumeric - the union of L and N */
1509 #define PT_SPACE 6 /* Perl space - Z plus 9,10,12,13 */
1510 #define PT_PXSPACE 7 /* POSIX space - Z plus 9,10,11,12,13 */
1511 #define PT_WORD 8 /* Word - L plus N plus underscore */
1512
1513 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1514 contain characters with values greater than 255. */
1515
1516 #define XCL_NOT 0x01 /* Flag: this is a negative class */
1517 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
1518
1519 #define XCL_END 0 /* Marks end of individual items */
1520 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
1521 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
1522 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
1523 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
1524
1525 /* These are escaped items that aren't just an encoding of a particular data
1526 value such as \n. They must have non-zero values, as check_escape() returns
1527 their negation. Also, they must appear in the same order as in the opcode
1528 definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
1529 corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1530 used for [^] in JavaScript compatibility mode, and for \C in non-utf mode. In
1531 non-DOTALL mode, "." behaves like \N.
1532
1533 The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
1534 when PCRE_UCP is set, when replacement of \d etc by \p sequences is required.
1535 They must be contiguous, and remain in order so that the replacements can be
1536 looked up from a table.
1537
1538 The final escape must be ESC_REF as subsequent values are used for
1539 backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
1540 greater than ESC_b and less than ESC_Z to detect the types that may be
1541 repeated. These are the types that consume characters. If any new escapes are
1542 put in between that don't consume a character, that code will have to change.
1543 */
1544
1545 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1546 ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1547 ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
1548 ESC_E, ESC_Q, ESC_g, ESC_k,
1549 ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu,
1550 ESC_REF };
1551
1552 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1553 OP_EOD must correspond in order to the list of escapes immediately above.
1554
1555 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1556 that follow must also be updated to match. There are also tables called
1557 "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1558
1559 enum {
1560 OP_END, /* 0 End of pattern */
1561
1562 /* Values corresponding to backslashed metacharacters */
1563
1564 OP_SOD, /* 1 Start of data: \A */
1565 OP_SOM, /* 2 Start of match (subject + offset): \G */
1566 OP_SET_SOM, /* 3 Set start of match (\K) */
1567 OP_NOT_WORD_BOUNDARY, /* 4 \B */
1568 OP_WORD_BOUNDARY, /* 5 \b */
1569 OP_NOT_DIGIT, /* 6 \D */
1570 OP_DIGIT, /* 7 \d */
1571 OP_NOT_WHITESPACE, /* 8 \S */
1572 OP_WHITESPACE, /* 9 \s */
1573 OP_NOT_WORDCHAR, /* 10 \W */
1574 OP_WORDCHAR, /* 11 \w */
1575
1576 OP_ANY, /* 12 Match any character except newline */
1577 OP_ALLANY, /* 13 Match any character */
1578 OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1579 OP_NOTPROP, /* 15 \P (not Unicode property) */
1580 OP_PROP, /* 16 \p (Unicode property) */
1581 OP_ANYNL, /* 17 \R (any newline sequence) */
1582 OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
1583 OP_HSPACE, /* 19 \h (horizontal whitespace) */
1584 OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
1585 OP_VSPACE, /* 21 \v (vertical whitespace) */
1586 OP_EXTUNI, /* 22 \X (extended Unicode sequence */
1587 OP_EODN, /* 23 End of data or \n at end of data: \Z. */
1588 OP_EOD, /* 24 End of data: \z */
1589
1590 OP_CIRC, /* 25 Start of line - not multiline */
1591 OP_CIRCM, /* 26 Start of line - multiline */
1592 OP_DOLL, /* 27 End of line - not multiline */
1593 OP_DOLLM, /* 28 End of line - multiline */
1594 OP_CHAR, /* 29 Match one character, casefully */
1595 OP_CHARI, /* 30 Match one character, caselessly */
1596 OP_NOT, /* 31 Match one character, not the given one, casefully */
1597 OP_NOTI, /* 32 Match one character, not the given one, caselessly */
1598
1599 /* The following sets of 13 opcodes must always be kept in step because
1600 the offset from the first one is used to generate the others. */
1601
1602 /**** Single characters, caseful, must precede the caseless ones ****/
1603
1604 OP_STAR, /* 33 The maximizing and minimizing versions of */
1605 OP_MINSTAR, /* 34 these six opcodes must come in pairs, with */
1606 OP_PLUS, /* 35 the minimizing one second. */
1607 OP_MINPLUS, /* 36 */
1608 OP_QUERY, /* 37 */
1609 OP_MINQUERY, /* 38 */
1610
1611 OP_UPTO, /* 39 From 0 to n matches of one character, caseful*/
1612 OP_MINUPTO, /* 40 */
1613 OP_EXACT, /* 41 Exactly n matches */
1614
1615 OP_POSSTAR, /* 42 Possessified star, caseful */
1616 OP_POSPLUS, /* 43 Possessified plus, caseful */
1617 OP_POSQUERY, /* 44 Posesssified query, caseful */
1618 OP_POSUPTO, /* 45 Possessified upto, caseful */
1619
1620 /**** Single characters, caseless, must follow the caseful ones */
1621
1622 OP_STARI, /* 46 */
1623 OP_MINSTARI, /* 47 */
1624 OP_PLUSI, /* 48 */
1625 OP_MINPLUSI, /* 49 */
1626 OP_QUERYI, /* 50 */
1627 OP_MINQUERYI, /* 51 */
1628
1629 OP_UPTOI, /* 52 From 0 to n matches of one character, caseless */
1630 OP_MINUPTOI, /* 53 */
1631 OP_EXACTI, /* 54 */
1632
1633 OP_POSSTARI, /* 55 Possessified star, caseless */
1634 OP_POSPLUSI, /* 56 Possessified plus, caseless */
1635 OP_POSQUERYI, /* 57 Posesssified query, caseless */
1636 OP_POSUPTOI, /* 58 Possessified upto, caseless */
1637
1638 /**** The negated ones must follow the non-negated ones, and match them ****/
1639 /**** Negated single character, caseful; must precede the caseless ones ****/
1640
1641 OP_NOTSTAR, /* 59 The maximizing and minimizing versions of */
1642 OP_NOTMINSTAR, /* 60 these six opcodes must come in pairs, with */
1643 OP_NOTPLUS, /* 61 the minimizing one second. They must be in */
1644 OP_NOTMINPLUS, /* 62 exactly the same order as those above. */
1645 OP_NOTQUERY, /* 63 */
1646 OP_NOTMINQUERY, /* 64 */
1647
1648 OP_NOTUPTO, /* 65 From 0 to n matches, caseful */
1649 OP_NOTMINUPTO, /* 66 */
1650 OP_NOTEXACT, /* 67 Exactly n matches */
1651
1652 OP_NOTPOSSTAR, /* 68 Possessified versions, caseful */
1653 OP_NOTPOSPLUS, /* 69 */
1654 OP_NOTPOSQUERY, /* 70 */
1655 OP_NOTPOSUPTO, /* 71 */
1656
1657 /**** Negated single character, caseless; must follow the caseful ones ****/
1658
1659 OP_NOTSTARI, /* 72 */
1660 OP_NOTMINSTARI, /* 73 */
1661 OP_NOTPLUSI, /* 74 */
1662 OP_NOTMINPLUSI, /* 75 */
1663 OP_NOTQUERYI, /* 76 */
1664 OP_NOTMINQUERYI, /* 77 */
1665
1666 OP_NOTUPTOI, /* 78 From 0 to n matches, caseless */
1667 OP_NOTMINUPTOI, /* 79 */
1668 OP_NOTEXACTI, /* 80 Exactly n matches */
1669
1670 OP_NOTPOSSTARI, /* 81 Possessified versions, caseless */
1671 OP_NOTPOSPLUSI, /* 82 */
1672 OP_NOTPOSQUERYI, /* 83 */
1673 OP_NOTPOSUPTOI, /* 84 */
1674
1675 /**** Character types ****/
1676
1677 OP_TYPESTAR, /* 85 The maximizing and minimizing versions of */
1678 OP_TYPEMINSTAR, /* 86 these six opcodes must come in pairs, with */
1679 OP_TYPEPLUS, /* 87 the minimizing one second. These codes must */
1680 OP_TYPEMINPLUS, /* 88 be in exactly the same order as those above. */
1681 OP_TYPEQUERY, /* 89 */
1682 OP_TYPEMINQUERY, /* 90 */
1683
1684 OP_TYPEUPTO, /* 91 From 0 to n matches */
1685 OP_TYPEMINUPTO, /* 92 */
1686 OP_TYPEEXACT, /* 93 Exactly n matches */
1687
1688 OP_TYPEPOSSTAR, /* 94 Possessified versions */
1689 OP_TYPEPOSPLUS, /* 95 */
1690 OP_TYPEPOSQUERY, /* 96 */
1691 OP_TYPEPOSUPTO, /* 97 */
1692
1693 /* These are used for character classes and back references; only the
1694 first six are the same as the sets above. */
1695
1696 OP_CRSTAR, /* 98 The maximizing and minimizing versions of */
1697 OP_CRMINSTAR, /* 99 all these opcodes must come in pairs, with */
1698 OP_CRPLUS, /* 100 the minimizing one second. These codes must */
1699 OP_CRMINPLUS, /* 101 be in exactly the same order as those above. */
1700 OP_CRQUERY, /* 102 */
1701 OP_CRMINQUERY, /* 103 */
1702
1703 OP_CRRANGE, /* 104 These are different to the three sets above. */
1704 OP_CRMINRANGE, /* 105 */
1705
1706 /* End of quantifier opcodes */
1707
1708 OP_CLASS, /* 106 Match a character class, chars < 256 only */
1709 OP_NCLASS, /* 107 Same, but the bitmap was created from a negative
1710 class - the difference is relevant only when a
1711 character > 255 is encountered. */
1712 OP_XCLASS, /* 108 Extended class for handling > 255 chars within the
1713 class. This does both positive and negative. */
1714 OP_REF, /* 109 Match a back reference, casefully */
1715 OP_REFI, /* 110 Match a back reference, caselessly */
1716 OP_RECURSE, /* 111 Match a numbered subpattern (possibly recursive) */
1717 OP_CALLOUT, /* 112 Call out to external function if provided */
1718
1719 OP_ALT, /* 113 Start of alternation */
1720 OP_KET, /* 114 End of group that doesn't have an unbounded repeat */
1721 OP_KETRMAX, /* 115 These two must remain together and in this */
1722 OP_KETRMIN, /* 116 order. They are for groups the repeat for ever. */
1723 OP_KETRPOS, /* 117 Possessive unlimited repeat. */
1724
1725 /* The assertions must come before BRA, CBRA, ONCE, and COND, and the four
1726 asserts must remain in order. */
1727
1728 OP_REVERSE, /* 118 Move pointer back - used in lookbehind assertions */
1729 OP_ASSERT, /* 119 Positive lookahead */
1730 OP_ASSERT_NOT, /* 120 Negative lookahead */
1731 OP_ASSERTBACK, /* 121 Positive lookbehind */
1732 OP_ASSERTBACK_NOT, /* 122 Negative lookbehind */
1733
1734 /* ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately
1735 after the assertions, with ONCE first, as there's a test for >= ONCE for a
1736 subpattern that isn't an assertion. The POS versions must immediately follow
1737 the non-POS versions in each case. */
1738
1739 OP_ONCE, /* 123 Atomic group, contains captures */
1740 OP_ONCE_NC, /* 124 Atomic group containing no captures */
1741 OP_BRA, /* 125 Start of non-capturing bracket */
1742 OP_BRAPOS, /* 126 Ditto, with unlimited, possessive repeat */
1743 OP_CBRA, /* 127 Start of capturing bracket */
1744 OP_CBRAPOS, /* 128 Ditto, with unlimited, possessive repeat */
1745 OP_COND, /* 129 Conditional group */
1746
1747 /* These five must follow the previous five, in the same order. There's a
1748 check for >= SBRA to distinguish the two sets. */
1749
1750 OP_SBRA, /* 130 Start of non-capturing bracket, check empty */
1751 OP_SBRAPOS, /* 131 Ditto, with unlimited, possessive repeat */
1752 OP_SCBRA, /* 132 Start of capturing bracket, check empty */
1753 OP_SCBRAPOS, /* 133 Ditto, with unlimited, possessive repeat */
1754 OP_SCOND, /* 134 Conditional group, check empty */
1755
1756 /* The next two pairs must (respectively) be kept together. */
1757
1758 OP_CREF, /* 135 Used to hold a capture number as condition */
1759 OP_NCREF, /* 136 Same, but generated by a name reference*/
1760 OP_RREF, /* 137 Used to hold a recursion number as condition */
1761 OP_NRREF, /* 138 Same, but generated by a name reference*/
1762 OP_DEF, /* 139 The DEFINE condition */
1763
1764 OP_BRAZERO, /* 140 These two must remain together and in this */
1765 OP_BRAMINZERO, /* 141 order. */
1766 OP_BRAPOSZERO, /* 142 */
1767
1768 /* These are backtracking control verbs */
1769
1770 OP_MARK, /* 143 always has an argument */
1771 OP_PRUNE, /* 144 */
1772 OP_PRUNE_ARG, /* 145 same, but with argument */
1773 OP_SKIP, /* 146 */
1774 OP_SKIP_ARG, /* 147 same, but with argument */
1775 OP_THEN, /* 148 */
1776 OP_THEN_ARG, /* 149 same, but with argument */
1777 OP_COMMIT, /* 150 */
1778
1779 /* These are forced failure and success verbs */
1780
1781 OP_FAIL, /* 151 */
1782 OP_ACCEPT, /* 152 */
1783 OP_ASSERT_ACCEPT, /* 153 Used inside assertions */
1784 OP_CLOSE, /* 154 Used before OP_ACCEPT to close open captures */
1785
1786 /* This is used to skip a subpattern with a {0} quantifier */
1787
1788 OP_SKIPZERO, /* 155 */
1789
1790 /* This is not an opcode, but is used to check that tables indexed by opcode
1791 are the correct length, in order to catch updating errors - there have been
1792 some in the past. */
1793
1794 OP_TABLE_LENGTH
1795 };
1796
1797 /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
1798 definitions that follow must also be updated to match. There are also tables
1799 called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1800
1801
1802 /* This macro defines textual names for all the opcodes. These are used only
1803 for debugging, and some of them are only partial names. The macro is referenced
1804 only in pcre_printint.c, which fills out the full names in many cases (and in
1805 some cases doesn't actually use these names at all). */
1806
1807 #define OP_NAME_LIST \
1808 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
1809 "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
1810 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
1811 "extuni", "\\Z", "\\z", \
1812 "^", "^", "$", "$", "char", "chari", "not", "noti", \
1813 "*", "*?", "+", "+?", "?", "??", \
1814 "{", "{", "{", \
1815 "*+","++", "?+", "{", \
1816 "*", "*?", "+", "+?", "?", "??", \
1817 "{", "{", "{", \
1818 "*+","++", "?+", "{", \
1819 "*", "*?", "+", "+?", "?", "??", \
1820 "{", "{", "{", \
1821 "*+","++", "?+", "{", \
1822 "*", "*?", "+", "+?", "?", "??", \
1823 "{", "{", "{", \
1824 "*+","++", "?+", "{", \
1825 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1826 "*+","++", "?+", "{", \
1827 "*", "*?", "+", "+?", "?", "??", "{", "{", \
1828 "class", "nclass", "xclass", "Ref", "Refi", \
1829 "Recurse", "Callout", \
1830 "Alt", "Ket", "KetRmax", "KetRmin", "KetRpos", \
1831 "Reverse", "Assert", "Assert not", "AssertB", "AssertB not", \
1832 "Once", "Once_NC", \
1833 "Bra", "BraPos", "CBra", "CBraPos", \
1834 "Cond", \
1835 "SBra", "SBraPos", "SCBra", "SCBraPos", \
1836 "SCond", \
1837 "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def", \
1838 "Brazero", "Braminzero", "Braposzero", \
1839 "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \
1840 "*THEN", "*THEN", "*COMMIT", "*FAIL", \
1841 "*ACCEPT", "*ASSERT_ACCEPT", \
1842 "Close", "Skip zero"
1843
1844
1845 /* This macro defines the length of fixed length operations in the compiled
1846 regex. The lengths are used when searching for specific things, and also in the
1847 debugging printing of a compiled regex. We use a macro so that it can be
1848 defined close to the definitions of the opcodes themselves.
1849
1850 As things have been extended, some of these are no longer fixed lenths, but are
1851 minima instead. For example, the length of a single-character repeat may vary
1852 in UTF-8 mode. The code that uses this table must know about such things. */
1853
1854 #define OP_LENGTHS \
1855 1, /* End */ \
1856 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
1857 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
1858 1, 1, 1, /* Any, AllAny, Anybyte */ \
1859 3, 3, /* \P, \p */ \
1860 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1861 1, /* \X */ \
1862 1, 1, 1, 1, 1, 1, /* \Z, \z, ^, ^M, $, $M */ \
1863 2, /* Char - the minimum length */ \
1864 2, /* Chari - the minimum length */ \
1865 2, /* not */ \
1866 2, /* noti */ \
1867 /* Positive single-char repeats ** These are */ \
1868 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
1869 2+IMM2_SIZE, 2+IMM2_SIZE, /* upto, minupto ** mode */ \
1870 2+IMM2_SIZE, /* exact */ \
1871 2, 2, 2, 2+IMM2_SIZE, /* *+, ++, ?+, upto+ */ \
1872 2, 2, 2, 2, 2, 2, /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8 */ \
1873 2+IMM2_SIZE, 2+IMM2_SIZE, /* upto I, minupto I */ \
1874 2+IMM2_SIZE, /* exact I */ \
1875 2, 2, 2, 2+IMM2_SIZE, /* *+I, ++I, ?+I, upto+I */ \
1876 /* Negative single-char repeats - only for chars < 256 */ \
1877 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
1878 2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto, minupto */ \
1879 2+IMM2_SIZE, /* NOT exact */ \
1880 2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *, +, ?, upto */ \
1881 2, 2, 2, 2, 2, 2, /* NOT *I, *?I, +I, +?I, ?I, ??I */ \
1882 2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto I, minupto I */ \
1883 2+IMM2_SIZE, /* NOT exact I */ \
1884 2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *I, +I, ?I, upto I */ \
1885 /* Positive type repeats */ \
1886 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
1887 2+IMM2_SIZE, 2+IMM2_SIZE, /* Type upto, minupto */ \
1888 2+IMM2_SIZE, /* Type exact */ \
1889 2, 2, 2, 2+IMM2_SIZE, /* Possessive *+, ++, ?+, upto+ */ \
1890 /* Character class & ref repeats */ \
1891 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1892 1+2*IMM2_SIZE, 1+2*IMM2_SIZE, /* CRRANGE, CRMINRANGE */ \
1893 1+(32/sizeof(pcre_uchar)), /* CLASS */ \
1894 1+(32/sizeof(pcre_uchar)), /* NCLASS */ \
1895 0, /* XCLASS - variable length */ \
1896 1+IMM2_SIZE, /* REF */ \
1897 1+IMM2_SIZE, /* REFI */ \
1898 1+LINK_SIZE, /* RECURSE */ \
1899 2+2*LINK_SIZE, /* CALLOUT */ \
1900 1+LINK_SIZE, /* Alt */ \
1901 1+LINK_SIZE, /* Ket */ \
1902 1+LINK_SIZE, /* KetRmax */ \
1903 1+LINK_SIZE, /* KetRmin */ \
1904 1+LINK_SIZE, /* KetRpos */ \
1905 1+LINK_SIZE, /* Reverse */ \
1906 1+LINK_SIZE, /* Assert */ \
1907 1+LINK_SIZE, /* Assert not */ \
1908 1+LINK_SIZE, /* Assert behind */ \
1909 1+LINK_SIZE, /* Assert behind not */ \
1910 1+LINK_SIZE, /* ONCE */ \
1911 1+LINK_SIZE, /* ONCE_NC */ \
1912 1+LINK_SIZE, /* BRA */ \
1913 1+LINK_SIZE, /* BRAPOS */ \
1914 1+LINK_SIZE+IMM2_SIZE, /* CBRA */ \
1915 1+LINK_SIZE+IMM2_SIZE, /* CBRAPOS */ \
1916 1+LINK_SIZE, /* COND */ \
1917 1+LINK_SIZE, /* SBRA */ \
1918 1+LINK_SIZE, /* SBRAPOS */ \
1919 1+LINK_SIZE+IMM2_SIZE, /* SCBRA */ \
1920 1+LINK_SIZE+IMM2_SIZE, /* SCBRAPOS */ \
1921 1+LINK_SIZE, /* SCOND */ \
1922 1+IMM2_SIZE, 1+IMM2_SIZE, /* CREF, NCREF */ \
1923 1+IMM2_SIZE, 1+IMM2_SIZE, /* RREF, NRREF */ \
1924 1, /* DEF */ \
1925 1, 1, 1, /* BRAZERO, BRAMINZERO, BRAPOSZERO */ \
1926 3, 1, 3, /* MARK, PRUNE, PRUNE_ARG */ \
1927 1, 3, /* SKIP, SKIP_ARG */ \
1928 1, 3, /* THEN, THEN_ARG */ \
1929 1, 1, 1, 1, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */ \
1930 1+IMM2_SIZE, 1 /* CLOSE, SKIPZERO */
1931
1932 /* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion"
1933 condition. */
1934
1935 #define RREF_ANY 0xffff
1936
1937 /* Compile time error code numbers. They are given names so that they can more
1938 easily be tracked. When a new number is added, the table called eint in
1939 pcreposix.c must be updated. */
1940
1941 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
1942 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
1943 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
1944 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1945 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1946 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1947 ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
1948 ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERRCOUNT };
1949
1950 /* JIT compiling modes. The function list is indexed by them. */
1951 enum { JIT_COMPILE, JIT_PARTIAL_SOFT_COMPILE, JIT_PARTIAL_HARD_COMPILE,
1952 JIT_NUMBER_OF_COMPILE_MODES };
1953
1954 /* The real format of the start of the pcre block; the index of names and the
1955 code vector run on as long as necessary after the end. We store an explicit
1956 offset to the name table so that if a regex is compiled on one host, saved, and
1957 then run on another where the size of pointers is different, all might still
1958 be well. For the case of compiled-on-4 and run-on-8, we include an extra
1959 pointer that is always NULL. For future-proofing, a few dummy fields were
1960 originally included - even though you can never get this planning right - but
1961 there is only one left now.
1962
1963 NOTE NOTE NOTE:
1964 Because people can now save and re-use compiled patterns, any additions to this
1965 structure should be made at the end, and something earlier (e.g. a new
1966 flag in the options or one of the dummy fields) should indicate that the new
1967 fields are present. Currently PCRE always sets the dummy fields to zero.
1968 NOTE NOTE NOTE
1969 */
1970
1971 #ifdef COMPILE_PCRE8
1972 #define REAL_PCRE real_pcre
1973 #else
1974 #define REAL_PCRE real_pcre16
1975 #endif
1976
1977 typedef struct REAL_PCRE {
1978 pcre_uint32 magic_number;
1979 pcre_uint32 size; /* Total that was malloced */
1980 pcre_uint32 options; /* Public options */
1981 pcre_uint16 flags; /* Private flags */
1982 pcre_uint16 max_lookbehind; /* Longest lookbehind (characters) */
1983 pcre_uint16 top_bracket; /* Highest numbered group */
1984 pcre_uint16 top_backref; /* Highest numbered back reference */
1985 pcre_uint16 first_char; /* Starting character */
1986 pcre_uint16 req_char; /* This character must be seen */
1987 pcre_uint16 name_table_offset; /* Offset to name table that follows */
1988 pcre_uint16 name_entry_size; /* Size of any name items */
1989 pcre_uint16 name_count; /* Number of name items */
1990 pcre_uint16 ref_count; /* Reference count */
1991 const pcre_uint8 *tables; /* Pointer to tables or NULL for std */
1992 const pcre_uint8 *nullpad; /* NULL padding */
1993 } REAL_PCRE;
1994
1995 /* The format of the block used to store data from pcre_study(). The same
1996 remark (see NOTE above) about extending this structure applies. */
1997
1998 typedef struct pcre_study_data {
1999 pcre_uint32 size; /* Total that was malloced */
2000 pcre_uint32 flags; /* Private flags */
2001 pcre_uint8 start_bits[32]; /* Starting char bits */
2002 pcre_uint32 minlength; /* Minimum subject length */
2003 } pcre_study_data;
2004
2005 /* Structure for building a chain of open capturing subpatterns during
2006 compiling, so that instructions to close them can be compiled when (*ACCEPT) is
2007 encountered. This is also used to identify subpatterns that contain recursive
2008 back references to themselves, so that they can be made atomic. */
2009
2010 typedef struct open_capitem {
2011 struct open_capitem *next; /* Chain link */
2012 pcre_uint16 number; /* Capture number */
2013 pcre_uint16 flag; /* Set TRUE if recursive back ref */
2014 } open_capitem;
2015
2016 /* Structure for passing "static" information around between the functions
2017 doing the compiling, so that they are thread-safe. */
2018
2019 typedef struct compile_data {
2020 const pcre_uint8 *lcc; /* Points to lower casing table */
2021 const pcre_uint8 *fcc; /* Points to case-flipping table */
2022 const pcre_uint8 *cbits; /* Points to character type table */
2023 const pcre_uint8 *ctypes; /* Points to table of type maps */
2024 const pcre_uchar *start_workspace;/* The start of working space */
2025 const pcre_uchar *start_code; /* The start of the compiled code */
2026 const pcre_uchar *start_pattern; /* The start of the pattern */
2027 const pcre_uchar *end_pattern; /* The end of the pattern */
2028 open_capitem *open_caps; /* Chain of open capture items */
2029 pcre_uchar *hwm; /* High watermark of workspace */
2030 pcre_uchar *name_table; /* The name/number table */
2031 int names_found; /* Number of entries so far */
2032 int name_entry_size; /* Size of each entry */
2033 int workspace_size; /* Size of workspace */
2034 int bracount; /* Count of capturing parens as we compile */
2035 int final_bracount; /* Saved value after first pass */
2036 int max_lookbehind; /* Maximum lookbehind (characters) */
2037 int top_backref; /* Maximum back reference */
2038 unsigned int backref_map; /* Bitmap of low back refs */
2039 int assert_depth; /* Depth of nested assertions */
2040 int external_options; /* External (initial) options */
2041 int external_flags; /* External flag bits to be set */
2042 int req_varyopt; /* "After variable item" flag for reqbyte */
2043 BOOL had_accept; /* (*ACCEPT) encountered */
2044 BOOL check_lookbehind; /* Lookbehinds need later checking */
2045 int nltype; /* Newline type */
2046 int nllen; /* Newline string length */
2047 pcre_uchar nl[4]; /* Newline string when fixed length */
2048 } compile_data;
2049
2050 /* Structure for maintaining a chain of pointers to the currently incomplete
2051 branches, for testing for left recursion while compiling. */
2052
2053 typedef struct branch_chain {
2054 struct branch_chain *outer;
2055 pcre_uchar *current_branch;
2056 } branch_chain;
2057
2058 /* Structure for items in a linked list that represents an explicit recursive
2059 call within the pattern; used by pcre_exec(). */
2060
2061 typedef struct recursion_info {
2062 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
2063 int group_num; /* Number of group that was called */
2064 int *offset_save; /* Pointer to start of saved offsets */
2065 int saved_max; /* Number of saved offsets */
2066 PCRE_PUCHAR subject_position; /* Position at start of recursion */
2067 } recursion_info;
2068
2069 /* A similar structure for pcre_dfa_exec(). */
2070
2071 typedef struct dfa_recursion_info {
2072 struct dfa_recursion_info *prevrec;
2073 int group_num;
2074 PCRE_PUCHAR subject_position;
2075 } dfa_recursion_info;
2076
2077 /* Structure for building a chain of data for holding the values of the subject
2078 pointer at the start of each subpattern, so as to detect when an empty string
2079 has been matched by a subpattern - to break infinite loops; used by
2080 pcre_exec(). */
2081
2082 typedef struct eptrblock {
2083 struct eptrblock *epb_prev;
2084 PCRE_PUCHAR epb_saved_eptr;
2085 } eptrblock;
2086
2087
2088 /* Structure for passing "static" information around between the functions
2089 doing traditional NFA matching, so that they are thread-safe. */
2090
2091 typedef struct match_data {
2092 unsigned long int match_call_count; /* As it says */
2093 unsigned long int match_limit; /* As it says */
2094 unsigned long int match_limit_recursion; /* As it says */
2095 int *offset_vector; /* Offset vector */
2096 int offset_end; /* One past the end */
2097 int offset_max; /* The maximum usable for return data */
2098 int nltype; /* Newline type */
2099 int nllen; /* Newline string length */
2100 int name_count; /* Number of names in name table */
2101 int name_entry_size; /* Size of entry in names table */
2102 pcre_uchar *name_table; /* Table of names */
2103 pcre_uchar nl[4]; /* Newline string when fixed */
2104 const pcre_uint8 *lcc; /* Points to lower casing table */
2105 const pcre_uint8 *fcc; /* Points to case-flipping table */
2106 const pcre_uint8 *ctypes; /* Points to table of type maps */
2107 BOOL offset_overflow; /* Set if too many extractions */
2108 BOOL notbol; /* NOTBOL flag */
2109 BOOL noteol; /* NOTEOL flag */
2110 BOOL utf; /* UTF-8 / UTF-16 flag */
2111 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
2112 BOOL use_ucp; /* PCRE_UCP flag */
2113 BOOL endonly; /* Dollar not before final \n */
2114 BOOL notempty; /* Empty string match not wanted */
2115 BOOL notempty_atstart; /* Empty string match at start not wanted */
2116 BOOL hitend; /* Hit the end of the subject at some point */
2117 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
2118 BOOL hasthen; /* Pattern contains (*THEN) */
2119 BOOL ignore_skip_arg; /* For re-run when SKIP name not found */
2120 const pcre_uchar *start_code; /* For use when recursing */
2121 PCRE_PUCHAR start_subject; /* Start of the subject string */
2122 PCRE_PUCHAR end_subject; /* End of the subject string */
2123 PCRE_PUCHAR start_match_ptr; /* Start of matched string */
2124 PCRE_PUCHAR end_match_ptr; /* Subject position at end match */
2125 PCRE_PUCHAR start_used_ptr; /* Earliest consulted character */
2126 int partial; /* PARTIAL options */
2127 int end_offset_top; /* Highwater mark at end of match */
2128 int capture_last; /* Most recent capture number */
2129 int start_offset; /* The start offset value */
2130 int match_function_type; /* Set for certain special calls of MATCH() */
2131 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
2132 int eptrn; /* Next free eptrblock */
2133 recursion_info *recursive; /* Linked list of recursion data */
2134 void *callout_data; /* To pass back to callouts */
2135 const pcre_uchar *mark; /* Mark pointer to pass back on success */
2136 const pcre_uchar *nomatch_mark;/* Mark pointer to pass back on failure */
2137 const pcre_uchar *once_target; /* Where to back up to for atomic groups */
2138 #ifdef NO_RECURSE
2139 void *match_frames_base; /* For remembering malloc'd frames */
2140 #endif
2141 } match_data;
2142
2143 /* A similar structure is used for the same purpose by the DFA matching
2144 functions. */
2145
2146 typedef struct dfa_match_data {
2147 const pcre_uchar *start_code; /* Start of the compiled pattern */
2148 const pcre_uchar *start_subject ; /* Start of the subject string */
2149 const pcre_uchar *end_subject; /* End of subject string */
2150 const pcre_uchar *start_used_ptr; /* Earliest consulted character */
2151 const pcre_uint8 *tables; /* Character tables */
2152 int start_offset; /* The start offset value */
2153 int moptions; /* Match options */
2154 int poptions; /* Pattern options */
2155 int nltype; /* Newline type */
2156 int nllen; /* Newline string length */
2157 pcre_uchar nl[4]; /* Newline string when fixed */
2158 void *callout_data; /* To pass back to callouts */
2159 dfa_recursion_info *recursive; /* Linked list of recursion data */
2160 } dfa_match_data;
2161
2162 /* Bit definitions for entries in the pcre_ctypes table. */
2163
2164 #define ctype_space 0x01
2165 #define ctype_letter 0x02
2166 #define ctype_digit 0x04
2167 #define ctype_xdigit 0x08
2168 #define ctype_word 0x10 /* alphanumeric or '_' */
2169 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
2170
2171 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
2172 of bits for a class map. Some classes are built by combining these tables. */
2173
2174 #define cbit_space 0 /* [:space:] or \s */
2175 #define cbit_xdigit 32 /* [:xdigit:] */
2176 #define cbit_digit 64 /* [:digit:] or \d */
2177 #define cbit_upper 96 /* [:upper:] */
2178 #define cbit_lower 128 /* [:lower:] */
2179 #define cbit_word 160 /* [:word:] or \w */
2180 #define cbit_graph 192 /* [:graph:] */
2181 #define cbit_print 224 /* [:print:] */
2182 #define cbit_punct 256 /* [:punct:] */
2183 #define cbit_cntrl 288 /* [:cntrl:] */
2184 #define cbit_length 320 /* Length of the cbits table */
2185
2186 /* Offsets of the various tables from the base tables pointer, and
2187 total length. */
2188
2189 #define lcc_offset 0
2190 #define fcc_offset 256
2191 #define cbits_offset 512
2192 #define ctypes_offset (cbits_offset + cbit_length)
2193 #define tables_length (ctypes_offset + 256)
2194
2195 /* Internal function and data prefixes. */
2196
2197 #ifdef COMPILE_PCRE8
2198 #ifndef PUBL
2199 #define PUBL(name) pcre_##name
2200 #endif
2201 #ifndef PRIV
2202 #define PRIV(name) _pcre_##name
2203 #endif
2204 #else /* COMPILE_PCRE8 */
2205 #ifdef COMPILE_PCRE16
2206 #ifndef PUBL
2207 #define PUBL(name) pcre16_##name
2208 #endif
2209 #ifndef PRIV
2210 #define PRIV(name) _pcre16_##name
2211 #endif
2212 #else
2213 #error Unsupported compiling mode
2214 #endif /* COMPILE_PCRE16 */
2215 #endif /* COMPILE_PCRE8 */
2216
2217 /* Layout of the UCP type table that translates property names into types and
2218 codes. Each entry used to point directly to a name, but to reduce the number of
2219 relocations in shared libraries, it now has an offset into a single string
2220 instead. */
2221
2222 typedef struct {
2223 pcre_uint16 name_offset;
2224 pcre_uint16 type;
2225 pcre_uint16 value;
2226 } ucp_type_table;
2227
2228
2229 /* Internal shared data tables. These are tables that are used by more than one
2230 of the exported public functions. They have to be "external" in the C sense,
2231 but are not part of the PCRE public API. The data for these tables is in the
2232 pcre_tables.c module. */
2233
2234 #ifdef COMPILE_PCRE8
2235
2236 extern const int PRIV(utf8_table1)[];
2237 extern const int PRIV(utf8_table1_size);
2238 extern const int PRIV(utf8_table2)[];
2239 extern const int PRIV(utf8_table3)[];
2240 extern const pcre_uint8 PRIV(utf8_table4)[];
2241
2242 #endif /* COMPILE_PCRE8 */
2243
2244 extern const char PRIV(utt_names)[];
2245 extern const ucp_type_table PRIV(utt)[];
2246 extern const int PRIV(utt_size);
2247
2248 extern const pcre_uint8 PRIV(default_tables)[];
2249
2250 extern const pcre_uint8 PRIV(OP_lengths)[];
2251
2252
2253 /* Internal shared functions. These are functions that are used by more than
2254 one of the exported public functions. They have to be "external" in the C
2255 sense, but are not part of the PCRE public API. */
2256
2257 /* String comparison functions. */
2258 #ifdef COMPILE_PCRE8
2259
2260 #define STRCMP_UC_UC(str1, str2) \
2261 strcmp((char *)(str1), (char *)(str2))
2262 #define STRCMP_UC_C8(str1, str2) \
2263 strcmp((char *)(str1), (str2))
2264 #define STRNCMP_UC_UC(str1, str2, num) \
2265 strncmp((char *)(str1), (char *)(str2), (num))
2266 #define STRNCMP_UC_C8(str1, str2, num) \
2267 strncmp((char *)(str1), (str2), (num))
2268 #define STRLEN_UC(str) strlen((const char *)str)
2269
2270 #else
2271
2272 extern int PRIV(strcmp_uc_uc)(const pcre_uchar *,
2273 const pcre_uchar *);
2274 extern int PRIV(strcmp_uc_c8)(const pcre_uchar *,
2275 const char *);
2276 extern int PRIV(strncmp_uc_uc)(const pcre_uchar *,
2277 const pcre_uchar *, unsigned int num);
2278 extern int PRIV(strncmp_uc_c8)(const pcre_uchar *,
2279 const char *, unsigned int num);
2280 extern unsigned int PRIV(strlen_uc)(const pcre_uchar *str);
2281
2282 #define STRCMP_UC_UC(str1, str2) \
2283 PRIV(strcmp_uc_uc)((str1), (str2))
2284 #define STRCMP_UC_C8(str1, str2) \
2285 PRIV(strcmp_uc_c8)((str1), (str2))
2286 #define STRNCMP_UC_UC(str1, str2, num) \
2287 PRIV(strncmp_uc_uc)((str1), (str2), (num))
2288 #define STRNCMP_UC_C8(str1, str2, num) \
2289 PRIV(strncmp_uc_c8)((str1), (str2), (num))
2290 #define STRLEN_UC(str) PRIV(strlen_uc)(str)
2291
2292 #endif /* COMPILE_PCRE8 */
2293
2294 extern const pcre_uchar *PRIV(find_bracket)(const pcre_uchar *, BOOL, int);
2295 extern BOOL PRIV(is_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2296 int *, BOOL);
2297 extern int PRIV(ord2utf)(pcre_uint32, pcre_uchar *);
2298 extern int PRIV(valid_utf)(PCRE_PUCHAR, int, int *);
2299 extern BOOL PRIV(was_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2300 int *, BOOL);
2301 extern BOOL PRIV(xclass)(int, const pcre_uchar *, BOOL);
2302
2303 #ifdef SUPPORT_JIT
2304 extern void PRIV(jit_compile)(const REAL_PCRE *,
2305 PUBL(extra) *, int);
2306 extern int PRIV(jit_exec)(const REAL_PCRE *, const PUBL(extra) *,
2307 const pcre_uchar *, int, int, int, int *, int);
2308 extern void PRIV(jit_free)(void *);
2309 extern int PRIV(jit_get_size)(void *);
2310 extern const char* PRIV(jit_get_target)(void);
2311 #endif
2312
2313 /* Unicode character database (UCD) */
2314
2315 typedef struct {
2316 pcre_uint8 script;
2317 pcre_uint8 chartype;
2318 pcre_int32 other_case;
2319 } ucd_record;
2320
2321 extern const ucd_record PRIV(ucd_records)[];
2322 extern const pcre_uint8 PRIV(ucd_stage1)[];
2323 extern const pcre_uint16 PRIV(ucd_stage2)[];
2324 extern const int PRIV(ucp_gentype)[];
2325 #ifdef SUPPORT_JIT
2326 extern const int PRIV(ucp_typerange)[];
2327 #endif
2328
2329 #ifdef SUPPORT_UCP
2330 /* UCD access macros */
2331
2332 #define UCD_BLOCK_SIZE 128
2333 #define GET_UCD(ch) (PRIV(ucd_records) + \
2334 PRIV(ucd_stage2)[PRIV(ucd_stage1)[(ch) / UCD_BLOCK_SIZE] * \
2335 UCD_BLOCK_SIZE + (ch) % UCD_BLOCK_SIZE])
2336
2337 #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
2338 #define UCD_SCRIPT(ch) GET_UCD(ch)->script
2339 #define UCD_CATEGORY(ch) PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
2340 #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case)
2341
2342 #endif /* SUPPORT_UCP */
2343
2344 #endif
2345
2346 /* End of pcre_internal.h */

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