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Mon Feb 13 06:04:50 2012 UTC (2 years, 7 months ago) by zherczeg
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Partial matching support is added to the JIT compiler
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 /* When UTF encoding is being used, a character is no longer just a single
527 character. The macros for character handling generate simple sequences when
528 used in character-mode, and more complicated ones for UTF characters.
529 GETCHARLENTEST and other macros are not used when UTF is not supported,
530 so they are not defined. To make sure they can never even appear when
531 UTF support is omitted, we don't even define them. */
532
533 #ifndef SUPPORT_UTF
534
535 /* #define MAX_VALUE_FOR_SINGLE_CHAR */
536 /* #define HAS_EXTRALEN(c) */
537 /* #define GET_EXTRALEN(c) */
538 /* #define NOT_FIRSTCHAR(c) */
539 #define GETCHAR(c, eptr) c = *eptr;
540 #define GETCHARTEST(c, eptr) c = *eptr;
541 #define GETCHARINC(c, eptr) c = *eptr++;
542 #define GETCHARINCTEST(c, eptr) c = *eptr++;
543 #define GETCHARLEN(c, eptr, len) c = *eptr;
544 /* #define GETCHARLENTEST(c, eptr, len) */
545 /* #define BACKCHAR(eptr) */
546 /* #define FORWARDCHAR(eptr) */
547 /* #define ACROSSCHAR(condition, eptr, action) */
548
549 #else /* SUPPORT_UTF */
550
551 #ifdef COMPILE_PCRE8
552
553 /* These macros were originally written in the form of loops that used data
554 from the tables whose names start with PRIV(utf8_table). They were rewritten by
555 a user so as not to use loops, because in some environments this gives a
556 significant performance advantage, and it seems never to do any harm. */
557
558 /* Tells the biggest code point which can be encoded as a single character. */
559
560 #define MAX_VALUE_FOR_SINGLE_CHAR 127
561
562 /* Tests whether the code point needs extra characters to decode. */
563
564 #define HAS_EXTRALEN(c) ((c) >= 0xc0)
565
566 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
567 Otherwise it has an undefined behaviour. */
568
569 #define GET_EXTRALEN(c) (PRIV(utf8_table4)[(c) & 0x3f])
570
571 /* Returns TRUE, if the given character is not the first character
572 of a UTF sequence. */
573
574 #define NOT_FIRSTCHAR(c) (((c) & 0xc0) == 0x80)
575
576 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
577 advancing the pointer. */
578
579 #define GETUTF8(c, eptr) \
580 { \
581 if ((c & 0x20) == 0) \
582 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
583 else if ((c & 0x10) == 0) \
584 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
585 else if ((c & 0x08) == 0) \
586 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
587 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
588 else if ((c & 0x04) == 0) \
589 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
590 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
591 (eptr[4] & 0x3f); \
592 else \
593 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
594 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
595 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
596 }
597
598 /* Get the next UTF-8 character, not advancing the pointer. This is called when
599 we know we are in UTF-8 mode. */
600
601 #define GETCHAR(c, eptr) \
602 c = *eptr; \
603 if (c >= 0xc0) GETUTF8(c, eptr);
604
605 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
606 pointer. */
607
608 #define GETCHARTEST(c, eptr) \
609 c = *eptr; \
610 if (utf && c >= 0xc0) GETUTF8(c, eptr);
611
612 /* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
613 the pointer. */
614
615 #define GETUTF8INC(c, eptr) \
616 { \
617 if ((c & 0x20) == 0) \
618 c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
619 else if ((c & 0x10) == 0) \
620 { \
621 c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
622 eptr += 2; \
623 } \
624 else if ((c & 0x08) == 0) \
625 { \
626 c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
627 ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
628 eptr += 3; \
629 } \
630 else if ((c & 0x04) == 0) \
631 { \
632 c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
633 ((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
634 (eptr[3] & 0x3f); \
635 eptr += 4; \
636 } \
637 else \
638 { \
639 c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
640 ((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
641 ((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
642 eptr += 5; \
643 } \
644 }
645
646 /* Get the next UTF-8 character, advancing the pointer. This is called when we
647 know we are in UTF-8 mode. */
648
649 #define GETCHARINC(c, eptr) \
650 c = *eptr++; \
651 if (c >= 0xc0) GETUTF8INC(c, eptr);
652
653 /* Get the next character, testing for UTF-8 mode, and advancing the pointer.
654 This is called when we don't know if we are in UTF-8 mode. */
655
656 #define GETCHARINCTEST(c, eptr) \
657 c = *eptr++; \
658 if (utf && c >= 0xc0) GETUTF8INC(c, eptr);
659
660 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
661 advancing the pointer, incrementing the length. */
662
663 #define GETUTF8LEN(c, eptr, len) \
664 { \
665 if ((c & 0x20) == 0) \
666 { \
667 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
668 len++; \
669 } \
670 else if ((c & 0x10) == 0) \
671 { \
672 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
673 len += 2; \
674 } \
675 else if ((c & 0x08) == 0) \
676 {\
677 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
678 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
679 len += 3; \
680 } \
681 else if ((c & 0x04) == 0) \
682 { \
683 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
684 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
685 (eptr[4] & 0x3f); \
686 len += 4; \
687 } \
688 else \
689 {\
690 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
691 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
692 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
693 len += 5; \
694 } \
695 }
696
697 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
698 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
699
700 #define GETCHARLEN(c, eptr, len) \
701 c = *eptr; \
702 if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
703
704 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
705 pointer, incrementing length if there are extra bytes. This is called when we
706 do not know if we are in UTF-8 mode. */
707
708 #define GETCHARLENTEST(c, eptr, len) \
709 c = *eptr; \
710 if (utf && c >= 0xc0) GETUTF8LEN(c, eptr, len);
711
712 /* If the pointer is not at the start of a character, move it back until
713 it is. This is called only in UTF-8 mode - we don't put a test within the macro
714 because almost all calls are already within a block of UTF-8 only code. */
715
716 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
717
718 /* Same as above, just in the other direction. */
719 #define FORWARDCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr++
720
721 /* Same as above, but it allows a fully customizable form. */
722 #define ACROSSCHAR(condition, eptr, action) \
723 while((condition) && ((eptr) & 0xc0) == 0x80) action
724
725 #else /* COMPILE_PCRE8 */
726
727 #ifdef COMPILE_PCRE16
728
729 /* Tells the biggest code point which can be encoded as a single character. */
730
731 #define MAX_VALUE_FOR_SINGLE_CHAR 65535
732
733 /* Tests whether the code point needs extra characters to decode. */
734
735 #define HAS_EXTRALEN(c) (((c) & 0xfc00) == 0xd800)
736
737 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
738 Otherwise it has an undefined behaviour. */
739
740 #define GET_EXTRALEN(c) 1
741
742 /* Returns TRUE, if the given character is not the first character
743 of a UTF sequence. */
744
745 #define NOT_FIRSTCHAR(c) (((c) & 0xfc00) == 0xdc00)
746
747 /* Base macro to pick up the low surrogate of a UTF-16 character, not
748 advancing the pointer. */
749
750 #define GETUTF16(c, eptr) \
751 { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; }
752
753 /* Get the next UTF-16 character, not advancing the pointer. This is called when
754 we know we are in UTF-16 mode. */
755
756 #define GETCHAR(c, eptr) \
757 c = *eptr; \
758 if ((c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
759
760 /* Get the next UTF-16 character, testing for UTF-16 mode, and not advancing the
761 pointer. */
762
763 #define GETCHARTEST(c, eptr) \
764 c = *eptr; \
765 if (utf && (c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
766
767 /* Base macro to pick up the low surrogate of a UTF-16 character, advancing
768 the pointer. */
769
770 #define GETUTF16INC(c, eptr) \
771 { c = (((c & 0x3ff) << 10) | (*eptr++ & 0x3ff)) + 0x10000; }
772
773 /* Get the next UTF-16 character, advancing the pointer. This is called when we
774 know we are in UTF-16 mode. */
775
776 #define GETCHARINC(c, eptr) \
777 c = *eptr++; \
778 if ((c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
779
780 /* Get the next character, testing for UTF-16 mode, and advancing the pointer.
781 This is called when we don't know if we are in UTF-16 mode. */
782
783 #define GETCHARINCTEST(c, eptr) \
784 c = *eptr++; \
785 if (utf && (c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
786
787 /* Base macro to pick up the low surrogate of a UTF-16 character, not
788 advancing the pointer, incrementing the length. */
789
790 #define GETUTF16LEN(c, eptr, len) \
791 { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; len++; }
792
793 /* Get the next UTF-16 character, not advancing the pointer, incrementing
794 length if there is a low surrogate. This is called when we know we are in
795 UTF-16 mode. */
796
797 #define GETCHARLEN(c, eptr, len) \
798 c = *eptr; \
799 if ((c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
800
801 /* Get the next UTF-816character, testing for UTF-16 mode, not advancing the
802 pointer, incrementing length if there is a low surrogate. This is called when
803 we do not know if we are in UTF-16 mode. */
804
805 #define GETCHARLENTEST(c, eptr, len) \
806 c = *eptr; \
807 if (utf && (c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
808
809 /* If the pointer is not at the start of a character, move it back until
810 it is. This is called only in UTF-16 mode - we don't put a test within the
811 macro because almost all calls are already within a block of UTF-16 only
812 code. */
813
814 #define BACKCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr--
815
816 /* Same as above, just in the other direction. */
817 #define FORWARDCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr++
818
819 /* Same as above, but it allows a fully customizable form. */
820 #define ACROSSCHAR(condition, eptr, action) \
821 if ((condition) && ((eptr) & 0xfc00) == 0xdc00) action
822
823 #endif
824
825 #endif /* COMPILE_PCRE8 */
826
827 #endif /* SUPPORT_UTF */
828
829
830 /* In case there is no definition of offsetof() provided - though any proper
831 Standard C system should have one. */
832
833 #ifndef offsetof
834 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
835 #endif
836
837
838 /* Private flags containing information about the compiled regex. They used to
839 live at the top end of the options word, but that got almost full, so now they
840 are in a 16-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as
841 the restrictions on partial matching have been lifted. It remains for backwards
842 compatibility. */
843
844 #ifdef COMPILE_PCRE8
845 #define PCRE_MODE 0x0001 /* compiled in 8 bit mode */
846 #endif
847 #ifdef COMPILE_PCRE16
848 #define PCRE_MODE 0x0002 /* compiled in 16 bit mode */
849 #endif
850 #define PCRE_FIRSTSET 0x0010 /* first_char is set */
851 #define PCRE_FCH_CASELESS 0x0020 /* caseless first char */
852 #define PCRE_REQCHSET 0x0040 /* req_byte is set */
853 #define PCRE_RCH_CASELESS 0x0080 /* caseless requested char */
854 #define PCRE_STARTLINE 0x0100 /* start after \n for multiline */
855 #define PCRE_NOPARTIAL 0x0200 /* can't use partial with this regex */
856 #define PCRE_JCHANGED 0x0400 /* j option used in regex */
857 #define PCRE_HASCRORLF 0x0800 /* explicit \r or \n in pattern */
858 #define PCRE_HASTHEN 0x1000 /* pattern contains (*THEN) */
859
860 /* Flags for the "extra" block produced by pcre_study(). */
861
862 #define PCRE_STUDY_MAPPED 0x0001 /* a map of starting chars exists */
863 #define PCRE_STUDY_MINLEN 0x0002 /* a minimum length field exists */
864
865 /* Masks for identifying the public options that are permitted at compile
866 time, run time, or study time, respectively. */
867
868 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
869 PCRE_NEWLINE_ANYCRLF)
870
871 #define PUBLIC_COMPILE_OPTIONS \
872 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
873 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
874 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
875 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
876 PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE)
877
878 #define PUBLIC_EXEC_OPTIONS \
879 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
880 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
881 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
882
883 #define PUBLIC_DFA_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_DFA_SHORTEST| \
886 PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
887 PCRE_NO_START_OPTIMIZE)
888
889 #define PUBLIC_STUDY_OPTIONS \
890 (PCRE_STUDY_JIT_COMPILE|PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE| \
891 PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE)
892
893 /* Magic number to provide a small check against being handed junk. */
894
895 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
896
897 /* This variable is used to detect a loaded regular expression
898 in different endianness. */
899
900 #define REVERSED_MAGIC_NUMBER 0x45524350UL /* 'ERCP' */
901
902 /* Negative values for the firstchar and reqchar variables */
903
904 #define REQ_UNSET (-2)
905 #define REQ_NONE (-1)
906
907 /* The maximum remaining length of subject we are prepared to search for a
908 req_byte match. */
909
910 #define REQ_BYTE_MAX 1000
911
912 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
913 environments where these macros are defined elsewhere. Unfortunately, there
914 is no way to do the same for the typedef. */
915
916 typedef int BOOL;
917
918 #ifndef FALSE
919 #define FALSE 0
920 #define TRUE 1
921 #endif
922
923 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
924 character constants like '*' because the compiler would emit their EBCDIC code,
925 which is different from their ASCII/UTF-8 code. Instead we define macros for
926 the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
927 is enabled. When UTF-8 support is not enabled, the definitions use character
928 literals. Both character and string versions of each character are needed, and
929 there are some longer strings as well.
930
931 This means that, on EBCDIC platforms, the PCRE library can handle either
932 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
933 would need different lookups depending on whether PCRE_UTF8 was set or not.
934 This would make it impossible to use characters in switch/case statements,
935 which would reduce performance. For a theoretical use (which nobody has asked
936 for) in a minority area (EBCDIC platforms), this is not sensible. Any
937 application that did need both could compile two versions of the library, using
938 macros to give the functions distinct names. */
939
940 #ifndef SUPPORT_UTF
941
942 /* UTF-8 support is not enabled; use the platform-dependent character literals
943 so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
944
945 #define CHAR_HT '\t'
946 #define CHAR_VT '\v'
947 #define CHAR_FF '\f'
948 #define CHAR_CR '\r'
949 #define CHAR_NL '\n'
950 #define CHAR_BS '\b'
951 #define CHAR_BEL '\a'
952 #ifdef EBCDIC
953 #define CHAR_ESC '\047'
954 #define CHAR_DEL '\007'
955 #else
956 #define CHAR_ESC '\033'
957 #define CHAR_DEL '\177'
958 #endif
959
960 #define CHAR_SPACE ' '
961 #define CHAR_EXCLAMATION_MARK '!'
962 #define CHAR_QUOTATION_MARK '"'
963 #define CHAR_NUMBER_SIGN '#'
964 #define CHAR_DOLLAR_SIGN '$'
965 #define CHAR_PERCENT_SIGN '%'
966 #define CHAR_AMPERSAND '&'
967 #define CHAR_APOSTROPHE '\''
968 #define CHAR_LEFT_PARENTHESIS '('
969 #define CHAR_RIGHT_PARENTHESIS ')'
970 #define CHAR_ASTERISK '*'
971 #define CHAR_PLUS '+'
972 #define CHAR_COMMA ','
973 #define CHAR_MINUS '-'
974 #define CHAR_DOT '.'
975 #define CHAR_SLASH '/'
976 #define CHAR_0 '0'
977 #define CHAR_1 '1'
978 #define CHAR_2 '2'
979 #define CHAR_3 '3'
980 #define CHAR_4 '4'
981 #define CHAR_5 '5'
982 #define CHAR_6 '6'
983 #define CHAR_7 '7'
984 #define CHAR_8 '8'
985 #define CHAR_9 '9'
986 #define CHAR_COLON ':'
987 #define CHAR_SEMICOLON ';'
988 #define CHAR_LESS_THAN_SIGN '<'
989 #define CHAR_EQUALS_SIGN '='
990 #define CHAR_GREATER_THAN_SIGN '>'
991 #define CHAR_QUESTION_MARK '?'
992 #define CHAR_COMMERCIAL_AT '@'
993 #define CHAR_A 'A'
994 #define CHAR_B 'B'
995 #define CHAR_C 'C'
996 #define CHAR_D 'D'
997 #define CHAR_E 'E'
998 #define CHAR_F 'F'
999 #define CHAR_G 'G'
1000 #define CHAR_H 'H'
1001 #define CHAR_I 'I'
1002 #define CHAR_J 'J'
1003 #define CHAR_K 'K'
1004 #define CHAR_L 'L'
1005 #define CHAR_M 'M'
1006 #define CHAR_N 'N'
1007 #define CHAR_O 'O'
1008 #define CHAR_P 'P'
1009 #define CHAR_Q 'Q'
1010 #define CHAR_R 'R'
1011 #define CHAR_S 'S'
1012 #define CHAR_T 'T'
1013 #define CHAR_U 'U'
1014 #define CHAR_V 'V'
1015 #define CHAR_W 'W'
1016 #define CHAR_X 'X'
1017 #define CHAR_Y 'Y'
1018 #define CHAR_Z 'Z'
1019 #define CHAR_LEFT_SQUARE_BRACKET '['
1020 #define CHAR_BACKSLASH '\\'
1021 #define CHAR_RIGHT_SQUARE_BRACKET ']'
1022 #define CHAR_CIRCUMFLEX_ACCENT '^'
1023 #define CHAR_UNDERSCORE '_'
1024 #define CHAR_GRAVE_ACCENT '`'
1025 #define CHAR_a 'a'
1026 #define CHAR_b 'b'
1027 #define CHAR_c 'c'
1028 #define CHAR_d 'd'
1029 #define CHAR_e 'e'
1030 #define CHAR_f 'f'
1031 #define CHAR_g 'g'
1032 #define CHAR_h 'h'
1033 #define CHAR_i 'i'
1034 #define CHAR_j 'j'
1035 #define CHAR_k 'k'
1036 #define CHAR_l 'l'
1037 #define CHAR_m 'm'
1038 #define CHAR_n 'n'
1039 #define CHAR_o 'o'
1040 #define CHAR_p 'p'
1041 #define CHAR_q 'q'
1042 #define CHAR_r 'r'
1043 #define CHAR_s 's'
1044 #define CHAR_t 't'
1045 #define CHAR_u 'u'
1046 #define CHAR_v 'v'
1047 #define CHAR_w 'w'
1048 #define CHAR_x 'x'
1049 #define CHAR_y 'y'
1050 #define CHAR_z 'z'
1051 #define CHAR_LEFT_CURLY_BRACKET '{'
1052 #define CHAR_VERTICAL_LINE '|'
1053 #define CHAR_RIGHT_CURLY_BRACKET '}'
1054 #define CHAR_TILDE '~'
1055
1056 #define STR_HT "\t"
1057 #define STR_VT "\v"
1058 #define STR_FF "\f"
1059 #define STR_CR "\r"
1060 #define STR_NL "\n"
1061 #define STR_BS "\b"
1062 #define STR_BEL "\a"
1063 #ifdef EBCDIC
1064 #define STR_ESC "\047"
1065 #define STR_DEL "\007"
1066 #else
1067 #define STR_ESC "\033"
1068 #define STR_DEL "\177"
1069 #endif
1070
1071 #define STR_SPACE " "
1072 #define STR_EXCLAMATION_MARK "!"
1073 #define STR_QUOTATION_MARK "\""
1074 #define STR_NUMBER_SIGN "#"
1075 #define STR_DOLLAR_SIGN "$"
1076 #define STR_PERCENT_SIGN "%"
1077 #define STR_AMPERSAND "&"
1078 #define STR_APOSTROPHE "'"
1079 #define STR_LEFT_PARENTHESIS "("
1080 #define STR_RIGHT_PARENTHESIS ")"
1081 #define STR_ASTERISK "*"
1082 #define STR_PLUS "+"
1083 #define STR_COMMA ","
1084 #define STR_MINUS "-"
1085 #define STR_DOT "."
1086 #define STR_SLASH "/"
1087 #define STR_0 "0"
1088 #define STR_1 "1"
1089 #define STR_2 "2"
1090 #define STR_3 "3"
1091 #define STR_4 "4"
1092 #define STR_5 "5"
1093 #define STR_6 "6"
1094 #define STR_7 "7"
1095 #define STR_8 "8"
1096 #define STR_9 "9"
1097 #define STR_COLON ":"
1098 #define STR_SEMICOLON ";"
1099 #define STR_LESS_THAN_SIGN "<"
1100 #define STR_EQUALS_SIGN "="
1101 #define STR_GREATER_THAN_SIGN ">"
1102 #define STR_QUESTION_MARK "?"
1103 #define STR_COMMERCIAL_AT "@"
1104 #define STR_A "A"
1105 #define STR_B "B"
1106 #define STR_C "C"
1107 #define STR_D "D"
1108 #define STR_E "E"
1109 #define STR_F "F"
1110 #define STR_G "G"
1111 #define STR_H "H"
1112 #define STR_I "I"
1113 #define STR_J "J"
1114 #define STR_K "K"
1115 #define STR_L "L"
1116 #define STR_M "M"
1117 #define STR_N "N"
1118 #define STR_O "O"
1119 #define STR_P "P"
1120 #define STR_Q "Q"
1121 #define STR_R "R"
1122 #define STR_S "S"
1123 #define STR_T "T"
1124 #define STR_U "U"
1125 #define STR_V "V"
1126 #define STR_W "W"
1127 #define STR_X "X"
1128 #define STR_Y "Y"
1129 #define STR_Z "Z"
1130 #define STR_LEFT_SQUARE_BRACKET "["
1131 #define STR_BACKSLASH "\\"
1132 #define STR_RIGHT_SQUARE_BRACKET "]"
1133 #define STR_CIRCUMFLEX_ACCENT "^"
1134 #define STR_UNDERSCORE "_"
1135 #define STR_GRAVE_ACCENT "`"
1136 #define STR_a "a"
1137 #define STR_b "b"
1138 #define STR_c "c"
1139 #define STR_d "d"
1140 #define STR_e "e"
1141 #define STR_f "f"
1142 #define STR_g "g"
1143 #define STR_h "h"
1144 #define STR_i "i"
1145 #define STR_j "j"
1146 #define STR_k "k"
1147 #define STR_l "l"
1148 #define STR_m "m"
1149 #define STR_n "n"
1150 #define STR_o "o"
1151 #define STR_p "p"
1152 #define STR_q "q"
1153 #define STR_r "r"
1154 #define STR_s "s"
1155 #define STR_t "t"
1156 #define STR_u "u"
1157 #define STR_v "v"
1158 #define STR_w "w"
1159 #define STR_x "x"
1160 #define STR_y "y"
1161 #define STR_z "z"
1162 #define STR_LEFT_CURLY_BRACKET "{"
1163 #define STR_VERTICAL_LINE "|"
1164 #define STR_RIGHT_CURLY_BRACKET "}"
1165 #define STR_TILDE "~"
1166
1167 #define STRING_ACCEPT0 "ACCEPT\0"
1168 #define STRING_COMMIT0 "COMMIT\0"
1169 #define STRING_F0 "F\0"
1170 #define STRING_FAIL0 "FAIL\0"
1171 #define STRING_MARK0 "MARK\0"
1172 #define STRING_PRUNE0 "PRUNE\0"
1173 #define STRING_SKIP0 "SKIP\0"
1174 #define STRING_THEN "THEN"
1175
1176 #define STRING_alpha0 "alpha\0"
1177 #define STRING_lower0 "lower\0"
1178 #define STRING_upper0 "upper\0"
1179 #define STRING_alnum0 "alnum\0"
1180 #define STRING_ascii0 "ascii\0"
1181 #define STRING_blank0 "blank\0"
1182 #define STRING_cntrl0 "cntrl\0"
1183 #define STRING_digit0 "digit\0"
1184 #define STRING_graph0 "graph\0"
1185 #define STRING_print0 "print\0"
1186 #define STRING_punct0 "punct\0"
1187 #define STRING_space0 "space\0"
1188 #define STRING_word0 "word\0"
1189 #define STRING_xdigit "xdigit"
1190
1191 #define STRING_DEFINE "DEFINE"
1192
1193 #define STRING_CR_RIGHTPAR "CR)"
1194 #define STRING_LF_RIGHTPAR "LF)"
1195 #define STRING_CRLF_RIGHTPAR "CRLF)"
1196 #define STRING_ANY_RIGHTPAR "ANY)"
1197 #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
1198 #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
1199 #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
1200 #ifdef COMPILE_PCRE8
1201 #define STRING_UTF_RIGHTPAR "UTF8)"
1202 #endif
1203 #ifdef COMPILE_PCRE16
1204 #define STRING_UTF_RIGHTPAR "UTF16)"
1205 #endif
1206 #define STRING_UCP_RIGHTPAR "UCP)"
1207 #define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)"
1208
1209 #else /* SUPPORT_UTF */
1210
1211 /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
1212 works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
1213 only. */
1214
1215 #define CHAR_HT '\011'
1216 #define CHAR_VT '\013'
1217 #define CHAR_FF '\014'
1218 #define CHAR_CR '\015'
1219 #define CHAR_NL '\012'
1220 #define CHAR_BS '\010'
1221 #define CHAR_BEL '\007'
1222 #define CHAR_ESC '\033'
1223 #define CHAR_DEL '\177'
1224
1225 #define CHAR_SPACE '\040'
1226 #define CHAR_EXCLAMATION_MARK '\041'
1227 #define CHAR_QUOTATION_MARK '\042'
1228 #define CHAR_NUMBER_SIGN '\043'
1229 #define CHAR_DOLLAR_SIGN '\044'
1230 #define CHAR_PERCENT_SIGN '\045'
1231 #define CHAR_AMPERSAND '\046'
1232 #define CHAR_APOSTROPHE '\047'
1233 #define CHAR_LEFT_PARENTHESIS '\050'
1234 #define CHAR_RIGHT_PARENTHESIS '\051'
1235 #define CHAR_ASTERISK '\052'
1236 #define CHAR_PLUS '\053'
1237 #define CHAR_COMMA '\054'
1238 #define CHAR_MINUS '\055'
1239 #define CHAR_DOT '\056'
1240 #define CHAR_SLASH '\057'
1241 #define CHAR_0 '\060'
1242 #define CHAR_1 '\061'
1243 #define CHAR_2 '\062'
1244 #define CHAR_3 '\063'
1245 #define CHAR_4 '\064'
1246 #define CHAR_5 '\065'
1247 #define CHAR_6 '\066'
1248 #define CHAR_7 '\067'
1249 #define CHAR_8 '\070'
1250 #define CHAR_9 '\071'
1251 #define CHAR_COLON '\072'
1252 #define CHAR_SEMICOLON '\073'
1253 #define CHAR_LESS_THAN_SIGN '\074'
1254 #define CHAR_EQUALS_SIGN '\075'
1255 #define CHAR_GREATER_THAN_SIGN '\076'
1256 #define CHAR_QUESTION_MARK '\077'
1257 #define CHAR_COMMERCIAL_AT '\100'
1258 #define CHAR_A '\101'
1259 #define CHAR_B '\102'
1260 #define CHAR_C '\103'
1261 #define CHAR_D '\104'
1262 #define CHAR_E '\105'
1263 #define CHAR_F '\106'
1264 #define CHAR_G '\107'
1265 #define CHAR_H '\110'
1266 #define CHAR_I '\111'
1267 #define CHAR_J '\112'
1268 #define CHAR_K '\113'
1269 #define CHAR_L '\114'
1270 #define CHAR_M '\115'
1271 #define CHAR_N '\116'
1272 #define CHAR_O '\117'
1273 #define CHAR_P '\120'
1274 #define CHAR_Q '\121'
1275 #define CHAR_R '\122'
1276 #define CHAR_S '\123'
1277 #define CHAR_T '\124'
1278 #define CHAR_U '\125'
1279 #define CHAR_V '\126'
1280 #define CHAR_W '\127'
1281 #define CHAR_X '\130'
1282 #define CHAR_Y '\131'
1283 #define CHAR_Z '\132'
1284 #define CHAR_LEFT_SQUARE_BRACKET '\133'
1285 #define CHAR_BACKSLASH '\134'
1286 #define CHAR_RIGHT_SQUARE_BRACKET '\135'
1287 #define CHAR_CIRCUMFLEX_ACCENT '\136'
1288 #define CHAR_UNDERSCORE '\137'
1289 #define CHAR_GRAVE_ACCENT '\140'
1290 #define CHAR_a '\141'
1291 #define CHAR_b '\142'
1292 #define CHAR_c '\143'
1293 #define CHAR_d '\144'
1294 #define CHAR_e '\145'
1295 #define CHAR_f '\146'
1296 #define CHAR_g '\147'
1297 #define CHAR_h '\150'
1298 #define CHAR_i '\151'
1299 #define CHAR_j '\152'
1300 #define CHAR_k '\153'
1301 #define CHAR_l '\154'
1302 #define CHAR_m '\155'
1303 #define CHAR_n '\156'
1304 #define CHAR_o '\157'
1305 #define CHAR_p '\160'
1306 #define CHAR_q '\161'
1307 #define CHAR_r '\162'
1308 #define CHAR_s '\163'
1309 #define CHAR_t '\164'
1310 #define CHAR_u '\165'
1311 #define CHAR_v '\166'
1312 #define CHAR_w '\167'
1313 #define CHAR_x '\170'
1314 #define CHAR_y '\171'
1315 #define CHAR_z '\172'
1316 #define CHAR_LEFT_CURLY_BRACKET '\173'
1317 #define CHAR_VERTICAL_LINE '\174'
1318 #define CHAR_RIGHT_CURLY_BRACKET '\175'
1319 #define CHAR_TILDE '\176'
1320
1321 #define STR_HT "\011"
1322 #define STR_VT "\013"
1323 #define STR_FF "\014"
1324 #define STR_CR "\015"
1325 #define STR_NL "\012"
1326 #define STR_BS "\010"
1327 #define STR_BEL "\007"
1328 #define STR_ESC "\033"
1329 #define STR_DEL "\177"
1330
1331 #define STR_SPACE "\040"
1332 #define STR_EXCLAMATION_MARK "\041"
1333 #define STR_QUOTATION_MARK "\042"
1334 #define STR_NUMBER_SIGN "\043"
1335 #define STR_DOLLAR_SIGN "\044"
1336 #define STR_PERCENT_SIGN "\045"
1337 #define STR_AMPERSAND "\046"
1338 #define STR_APOSTROPHE "\047"
1339 #define STR_LEFT_PARENTHESIS "\050"
1340 #define STR_RIGHT_PARENTHESIS "\051"
1341 #define STR_ASTERISK "\052"
1342 #define STR_PLUS "\053"
1343 #define STR_COMMA "\054"
1344 #define STR_MINUS "\055"
1345 #define STR_DOT "\056"
1346 #define STR_SLASH "\057"
1347 #define STR_0 "\060"
1348 #define STR_1 "\061"
1349 #define STR_2 "\062"
1350 #define STR_3 "\063"
1351 #define STR_4 "\064"
1352 #define STR_5 "\065"
1353 #define STR_6 "\066"
1354 #define STR_7 "\067"
1355 #define STR_8 "\070"
1356 #define STR_9 "\071"
1357 #define STR_COLON "\072"
1358 #define STR_SEMICOLON "\073"
1359 #define STR_LESS_THAN_SIGN "\074"
1360 #define STR_EQUALS_SIGN "\075"
1361 #define STR_GREATER_THAN_SIGN "\076"
1362 #define STR_QUESTION_MARK "\077"
1363 #define STR_COMMERCIAL_AT "\100"
1364 #define STR_A "\101"
1365 #define STR_B "\102"
1366 #define STR_C "\103"
1367 #define STR_D "\104"
1368 #define STR_E "\105"
1369 #define STR_F "\106"
1370 #define STR_G "\107"
1371 #define STR_H "\110"
1372 #define STR_I "\111"
1373 #define STR_J "\112"
1374 #define STR_K "\113"
1375 #define STR_L "\114"
1376 #define STR_M "\115"
1377 #define STR_N "\116"
1378 #define STR_O "\117"
1379 #define STR_P "\120"
1380 #define STR_Q "\121"
1381 #define STR_R "\122"
1382 #define STR_S "\123"
1383 #define STR_T "\124"
1384 #define STR_U "\125"
1385 #define STR_V "\126"
1386 #define STR_W "\127"
1387 #define STR_X "\130"
1388 #define STR_Y "\131"
1389 #define STR_Z "\132"
1390 #define STR_LEFT_SQUARE_BRACKET "\133"
1391 #define STR_BACKSLASH "\134"
1392 #define STR_RIGHT_SQUARE_BRACKET "\135"
1393 #define STR_CIRCUMFLEX_ACCENT "\136"
1394 #define STR_UNDERSCORE "\137"
1395 #define STR_GRAVE_ACCENT "\140"
1396 #define STR_a "\141"
1397 #define STR_b "\142"
1398 #define STR_c "\143"
1399 #define STR_d "\144"
1400 #define STR_e "\145"
1401 #define STR_f "\146"
1402 #define STR_g "\147"
1403 #define STR_h "\150"
1404 #define STR_i "\151"
1405 #define STR_j "\152"
1406 #define STR_k "\153"
1407 #define STR_l "\154"
1408 #define STR_m "\155"
1409 #define STR_n "\156"
1410 #define STR_o "\157"
1411 #define STR_p "\160"
1412 #define STR_q "\161"
1413 #define STR_r "\162"
1414 #define STR_s "\163"
1415 #define STR_t "\164"
1416 #define STR_u "\165"
1417 #define STR_v "\166"
1418 #define STR_w "\167"
1419 #define STR_x "\170"
1420 #define STR_y "\171"
1421 #define STR_z "\172"
1422 #define STR_LEFT_CURLY_BRACKET "\173"
1423 #define STR_VERTICAL_LINE "\174"
1424 #define STR_RIGHT_CURLY_BRACKET "\175"
1425 #define STR_TILDE "\176"
1426
1427 #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1428 #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1429 #define STRING_F0 STR_F "\0"
1430 #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
1431 #define STRING_MARK0 STR_M STR_A STR_R STR_K "\0"
1432 #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
1433 #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
1434 #define STRING_THEN STR_T STR_H STR_E STR_N
1435
1436 #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
1437 #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
1438 #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
1439 #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
1440 #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
1441 #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
1442 #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
1443 #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
1444 #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
1445 #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
1446 #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
1447 #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
1448 #define STRING_word0 STR_w STR_o STR_r STR_d "\0"
1449 #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
1450
1451 #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
1452
1453 #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
1454 #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
1455 #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1456 #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1457 #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1458 #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
1459 #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
1460 #ifdef COMPILE_PCRE8
1461 #define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1462 #endif
1463 #ifdef COMPILE_PCRE16
1464 #define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_1 STR_6 STR_RIGHT_PARENTHESIS
1465 #endif
1466 #define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
1467 #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
1468
1469 #endif /* SUPPORT_UTF */
1470
1471 /* Escape items that are just an encoding of a particular data value. */
1472
1473 #ifndef ESC_e
1474 #define ESC_e CHAR_ESC
1475 #endif
1476
1477 #ifndef ESC_f
1478 #define ESC_f CHAR_FF
1479 #endif
1480
1481 #ifndef ESC_n
1482 #define ESC_n CHAR_NL
1483 #endif
1484
1485 #ifndef ESC_r
1486 #define ESC_r CHAR_CR
1487 #endif
1488
1489 /* We can't officially use ESC_t because it is a POSIX reserved identifier
1490 (presumably because of all the others like size_t). */
1491
1492 #ifndef ESC_tee
1493 #define ESC_tee CHAR_HT
1494 #endif
1495
1496 /* Codes for different types of Unicode property */
1497
1498 #define PT_ANY 0 /* Any property - matches all chars */
1499 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
1500 #define PT_GC 2 /* Specified general characteristic (e.g. L) */
1501 #define PT_PC 3 /* Specified particular characteristic (e.g. Lu) */
1502 #define PT_SC 4 /* Script (e.g. Han) */
1503 #define PT_ALNUM 5 /* Alphanumeric - the union of L and N */
1504 #define PT_SPACE 6 /* Perl space - Z plus 9,10,12,13 */
1505 #define PT_PXSPACE 7 /* POSIX space - Z plus 9,10,11,12,13 */
1506 #define PT_WORD 8 /* Word - L plus N plus underscore */
1507
1508 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1509 contain characters with values greater than 255. */
1510
1511 #define XCL_NOT 0x01 /* Flag: this is a negative class */
1512 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
1513
1514 #define XCL_END 0 /* Marks end of individual items */
1515 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
1516 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
1517 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
1518 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
1519
1520 /* These are escaped items that aren't just an encoding of a particular data
1521 value such as \n. They must have non-zero values, as check_escape() returns
1522 their negation. Also, they must appear in the same order as in the opcode
1523 definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
1524 corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1525 used for [^] in JavaScript compatibility mode, and for \C in non-utf mode. In
1526 non-DOTALL mode, "." behaves like \N.
1527
1528 The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
1529 when PCRE_UCP is set, when replacement of \d etc by \p sequences is required.
1530 They must be contiguous, and remain in order so that the replacements can be
1531 looked up from a table.
1532
1533 The final escape must be ESC_REF as subsequent values are used for
1534 backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
1535 greater than ESC_b and less than ESC_Z to detect the types that may be
1536 repeated. These are the types that consume characters. If any new escapes are
1537 put in between that don't consume a character, that code will have to change.
1538 */
1539
1540 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1541 ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1542 ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
1543 ESC_E, ESC_Q, ESC_g, ESC_k,
1544 ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu,
1545 ESC_REF };
1546
1547 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1548 OP_EOD must correspond in order to the list of escapes immediately above.
1549
1550 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1551 that follow must also be updated to match. There are also tables called
1552 "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1553
1554 enum {
1555 OP_END, /* 0 End of pattern */
1556
1557 /* Values corresponding to backslashed metacharacters */
1558
1559 OP_SOD, /* 1 Start of data: \A */
1560 OP_SOM, /* 2 Start of match (subject + offset): \G */
1561 OP_SET_SOM, /* 3 Set start of match (\K) */
1562 OP_NOT_WORD_BOUNDARY, /* 4 \B */
1563 OP_WORD_BOUNDARY, /* 5 \b */
1564 OP_NOT_DIGIT, /* 6 \D */
1565 OP_DIGIT, /* 7 \d */
1566 OP_NOT_WHITESPACE, /* 8 \S */
1567 OP_WHITESPACE, /* 9 \s */
1568 OP_NOT_WORDCHAR, /* 10 \W */
1569 OP_WORDCHAR, /* 11 \w */
1570
1571 OP_ANY, /* 12 Match any character except newline */
1572 OP_ALLANY, /* 13 Match any character */
1573 OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1574 OP_NOTPROP, /* 15 \P (not Unicode property) */
1575 OP_PROP, /* 16 \p (Unicode property) */
1576 OP_ANYNL, /* 17 \R (any newline sequence) */
1577 OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
1578 OP_HSPACE, /* 19 \h (horizontal whitespace) */
1579 OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
1580 OP_VSPACE, /* 21 \v (vertical whitespace) */
1581 OP_EXTUNI, /* 22 \X (extended Unicode sequence */
1582 OP_EODN, /* 23 End of data or \n at end of data: \Z. */
1583 OP_EOD, /* 24 End of data: \z */
1584
1585 OP_CIRC, /* 25 Start of line - not multiline */
1586 OP_CIRCM, /* 26 Start of line - multiline */
1587 OP_DOLL, /* 27 End of line - not multiline */
1588 OP_DOLLM, /* 28 End of line - multiline */
1589 OP_CHAR, /* 29 Match one character, casefully */
1590 OP_CHARI, /* 30 Match one character, caselessly */
1591 OP_NOT, /* 31 Match one character, not the given one, casefully */
1592 OP_NOTI, /* 32 Match one character, not the given one, caselessly */
1593
1594 /* The following sets of 13 opcodes must always be kept in step because
1595 the offset from the first one is used to generate the others. */
1596
1597 /**** Single characters, caseful, must precede the caseless ones ****/
1598
1599 OP_STAR, /* 33 The maximizing and minimizing versions of */
1600 OP_MINSTAR, /* 34 these six opcodes must come in pairs, with */
1601 OP_PLUS, /* 35 the minimizing one second. */
1602 OP_MINPLUS, /* 36 */
1603 OP_QUERY, /* 37 */
1604 OP_MINQUERY, /* 38 */
1605
1606 OP_UPTO, /* 39 From 0 to n matches of one character, caseful*/
1607 OP_MINUPTO, /* 40 */
1608 OP_EXACT, /* 41 Exactly n matches */
1609
1610 OP_POSSTAR, /* 42 Possessified star, caseful */
1611 OP_POSPLUS, /* 43 Possessified plus, caseful */
1612 OP_POSQUERY, /* 44 Posesssified query, caseful */
1613 OP_POSUPTO, /* 45 Possessified upto, caseful */
1614
1615 /**** Single characters, caseless, must follow the caseful ones */
1616
1617 OP_STARI, /* 46 */
1618 OP_MINSTARI, /* 47 */
1619 OP_PLUSI, /* 48 */
1620 OP_MINPLUSI, /* 49 */
1621 OP_QUERYI, /* 50 */
1622 OP_MINQUERYI, /* 51 */
1623
1624 OP_UPTOI, /* 52 From 0 to n matches of one character, caseless */
1625 OP_MINUPTOI, /* 53 */
1626 OP_EXACTI, /* 54 */
1627
1628 OP_POSSTARI, /* 55 Possessified star, caseless */
1629 OP_POSPLUSI, /* 56 Possessified plus, caseless */
1630 OP_POSQUERYI, /* 57 Posesssified query, caseless */
1631 OP_POSUPTOI, /* 58 Possessified upto, caseless */
1632
1633 /**** The negated ones must follow the non-negated ones, and match them ****/
1634 /**** Negated single character, caseful; must precede the caseless ones ****/
1635
1636 OP_NOTSTAR, /* 59 The maximizing and minimizing versions of */
1637 OP_NOTMINSTAR, /* 60 these six opcodes must come in pairs, with */
1638 OP_NOTPLUS, /* 61 the minimizing one second. They must be in */
1639 OP_NOTMINPLUS, /* 62 exactly the same order as those above. */
1640 OP_NOTQUERY, /* 63 */
1641 OP_NOTMINQUERY, /* 64 */
1642
1643 OP_NOTUPTO, /* 65 From 0 to n matches, caseful */
1644 OP_NOTMINUPTO, /* 66 */
1645 OP_NOTEXACT, /* 67 Exactly n matches */
1646
1647 OP_NOTPOSSTAR, /* 68 Possessified versions, caseful */
1648 OP_NOTPOSPLUS, /* 69 */
1649 OP_NOTPOSQUERY, /* 70 */
1650 OP_NOTPOSUPTO, /* 71 */
1651
1652 /**** Negated single character, caseless; must follow the caseful ones ****/
1653
1654 OP_NOTSTARI, /* 72 */
1655 OP_NOTMINSTARI, /* 73 */
1656 OP_NOTPLUSI, /* 74 */
1657 OP_NOTMINPLUSI, /* 75 */
1658 OP_NOTQUERYI, /* 76 */
1659 OP_NOTMINQUERYI, /* 77 */
1660
1661 OP_NOTUPTOI, /* 78 From 0 to n matches, caseless */
1662 OP_NOTMINUPTOI, /* 79 */
1663 OP_NOTEXACTI, /* 80 Exactly n matches */
1664
1665 OP_NOTPOSSTARI, /* 81 Possessified versions, caseless */
1666 OP_NOTPOSPLUSI, /* 82 */
1667 OP_NOTPOSQUERYI, /* 83 */
1668 OP_NOTPOSUPTOI, /* 84 */
1669
1670 /**** Character types ****/
1671
1672 OP_TYPESTAR, /* 85 The maximizing and minimizing versions of */
1673 OP_TYPEMINSTAR, /* 86 these six opcodes must come in pairs, with */
1674 OP_TYPEPLUS, /* 87 the minimizing one second. These codes must */
1675 OP_TYPEMINPLUS, /* 88 be in exactly the same order as those above. */
1676 OP_TYPEQUERY, /* 89 */
1677 OP_TYPEMINQUERY, /* 90 */
1678
1679 OP_TYPEUPTO, /* 91 From 0 to n matches */
1680 OP_TYPEMINUPTO, /* 92 */
1681 OP_TYPEEXACT, /* 93 Exactly n matches */
1682
1683 OP_TYPEPOSSTAR, /* 94 Possessified versions */
1684 OP_TYPEPOSPLUS, /* 95 */
1685 OP_TYPEPOSQUERY, /* 96 */
1686 OP_TYPEPOSUPTO, /* 97 */
1687
1688 /* These are used for character classes and back references; only the
1689 first six are the same as the sets above. */
1690
1691 OP_CRSTAR, /* 98 The maximizing and minimizing versions of */
1692 OP_CRMINSTAR, /* 99 all these opcodes must come in pairs, with */
1693 OP_CRPLUS, /* 100 the minimizing one second. These codes must */
1694 OP_CRMINPLUS, /* 101 be in exactly the same order as those above. */
1695 OP_CRQUERY, /* 102 */
1696 OP_CRMINQUERY, /* 103 */
1697
1698 OP_CRRANGE, /* 104 These are different to the three sets above. */
1699 OP_CRMINRANGE, /* 105 */
1700
1701 /* End of quantifier opcodes */
1702
1703 OP_CLASS, /* 106 Match a character class, chars < 256 only */
1704 OP_NCLASS, /* 107 Same, but the bitmap was created from a negative
1705 class - the difference is relevant only when a
1706 character > 255 is encountered. */
1707 OP_XCLASS, /* 108 Extended class for handling > 255 chars within the
1708 class. This does both positive and negative. */
1709 OP_REF, /* 109 Match a back reference, casefully */
1710 OP_REFI, /* 110 Match a back reference, caselessly */
1711 OP_RECURSE, /* 111 Match a numbered subpattern (possibly recursive) */
1712 OP_CALLOUT, /* 112 Call out to external function if provided */
1713
1714 OP_ALT, /* 113 Start of alternation */
1715 OP_KET, /* 114 End of group that doesn't have an unbounded repeat */
1716 OP_KETRMAX, /* 115 These two must remain together and in this */
1717 OP_KETRMIN, /* 116 order. They are for groups the repeat for ever. */
1718 OP_KETRPOS, /* 117 Possessive unlimited repeat. */
1719
1720 /* The assertions must come before BRA, CBRA, ONCE, and COND, and the four
1721 asserts must remain in order. */
1722
1723 OP_REVERSE, /* 118 Move pointer back - used in lookbehind assertions */
1724 OP_ASSERT, /* 119 Positive lookahead */
1725 OP_ASSERT_NOT, /* 120 Negative lookahead */
1726 OP_ASSERTBACK, /* 121 Positive lookbehind */
1727 OP_ASSERTBACK_NOT, /* 122 Negative lookbehind */
1728
1729 /* ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately
1730 after the assertions, with ONCE first, as there's a test for >= ONCE for a
1731 subpattern that isn't an assertion. The POS versions must immediately follow
1732 the non-POS versions in each case. */
1733
1734 OP_ONCE, /* 123 Atomic group, contains captures */
1735 OP_ONCE_NC, /* 124 Atomic group containing no captures */
1736 OP_BRA, /* 125 Start of non-capturing bracket */
1737 OP_BRAPOS, /* 126 Ditto, with unlimited, possessive repeat */
1738 OP_CBRA, /* 127 Start of capturing bracket */
1739 OP_CBRAPOS, /* 128 Ditto, with unlimited, possessive repeat */
1740 OP_COND, /* 129 Conditional group */
1741
1742 /* These five must follow the previous five, in the same order. There's a
1743 check for >= SBRA to distinguish the two sets. */
1744
1745 OP_SBRA, /* 130 Start of non-capturing bracket, check empty */
1746 OP_SBRAPOS, /* 131 Ditto, with unlimited, possessive repeat */
1747 OP_SCBRA, /* 132 Start of capturing bracket, check empty */
1748 OP_SCBRAPOS, /* 133 Ditto, with unlimited, possessive repeat */
1749 OP_SCOND, /* 134 Conditional group, check empty */
1750
1751 /* The next two pairs must (respectively) be kept together. */
1752
1753 OP_CREF, /* 135 Used to hold a capture number as condition */
1754 OP_NCREF, /* 136 Same, but generated by a name reference*/
1755 OP_RREF, /* 137 Used to hold a recursion number as condition */
1756 OP_NRREF, /* 138 Same, but generated by a name reference*/
1757 OP_DEF, /* 139 The DEFINE condition */
1758
1759 OP_BRAZERO, /* 140 These two must remain together and in this */
1760 OP_BRAMINZERO, /* 141 order. */
1761 OP_BRAPOSZERO, /* 142 */
1762
1763 /* These are backtracking control verbs */
1764
1765 OP_MARK, /* 143 always has an argument */
1766 OP_PRUNE, /* 144 */
1767 OP_PRUNE_ARG, /* 145 same, but with argument */
1768 OP_SKIP, /* 146 */
1769 OP_SKIP_ARG, /* 147 same, but with argument */
1770 OP_THEN, /* 148 */
1771 OP_THEN_ARG, /* 149 same, but with argument */
1772 OP_COMMIT, /* 150 */
1773
1774 /* These are forced failure and success verbs */
1775
1776 OP_FAIL, /* 151 */
1777 OP_ACCEPT, /* 152 */
1778 OP_ASSERT_ACCEPT, /* 153 Used inside assertions */
1779 OP_CLOSE, /* 154 Used before OP_ACCEPT to close open captures */
1780
1781 /* This is used to skip a subpattern with a {0} quantifier */
1782
1783 OP_SKIPZERO, /* 155 */
1784
1785 /* This is not an opcode, but is used to check that tables indexed by opcode
1786 are the correct length, in order to catch updating errors - there have been
1787 some in the past. */
1788
1789 OP_TABLE_LENGTH
1790 };
1791
1792 /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
1793 definitions that follow must also be updated to match. There are also tables
1794 called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1795
1796
1797 /* This macro defines textual names for all the opcodes. These are used only
1798 for debugging, and some of them are only partial names. The macro is referenced
1799 only in pcre_printint.c, which fills out the full names in many cases (and in
1800 some cases doesn't actually use these names at all). */
1801
1802 #define OP_NAME_LIST \
1803 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
1804 "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
1805 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
1806 "extuni", "\\Z", "\\z", \
1807 "^", "^", "$", "$", "char", "chari", "not", "noti", \
1808 "*", "*?", "+", "+?", "?", "??", \
1809 "{", "{", "{", \
1810 "*+","++", "?+", "{", \
1811 "*", "*?", "+", "+?", "?", "??", \
1812 "{", "{", "{", \
1813 "*+","++", "?+", "{", \
1814 "*", "*?", "+", "+?", "?", "??", \
1815 "{", "{", "{", \
1816 "*+","++", "?+", "{", \
1817 "*", "*?", "+", "+?", "?", "??", \
1818 "{", "{", "{", \
1819 "*+","++", "?+", "{", \
1820 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1821 "*+","++", "?+", "{", \
1822 "*", "*?", "+", "+?", "?", "??", "{", "{", \
1823 "class", "nclass", "xclass", "Ref", "Refi", \
1824 "Recurse", "Callout", \
1825 "Alt", "Ket", "KetRmax", "KetRmin", "KetRpos", \
1826 "Reverse", "Assert", "Assert not", "AssertB", "AssertB not", \
1827 "Once", "Once_NC", \
1828 "Bra", "BraPos", "CBra", "CBraPos", \
1829 "Cond", \
1830 "SBra", "SBraPos", "SCBra", "SCBraPos", \
1831 "SCond", \
1832 "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def", \
1833 "Brazero", "Braminzero", "Braposzero", \
1834 "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \
1835 "*THEN", "*THEN", "*COMMIT", "*FAIL", \
1836 "*ACCEPT", "*ASSERT_ACCEPT", \
1837 "Close", "Skip zero"
1838
1839
1840 /* This macro defines the length of fixed length operations in the compiled
1841 regex. The lengths are used when searching for specific things, and also in the
1842 debugging printing of a compiled regex. We use a macro so that it can be
1843 defined close to the definitions of the opcodes themselves.
1844
1845 As things have been extended, some of these are no longer fixed lenths, but are
1846 minima instead. For example, the length of a single-character repeat may vary
1847 in UTF-8 mode. The code that uses this table must know about such things. */
1848
1849 #define OP_LENGTHS \
1850 1, /* End */ \
1851 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
1852 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
1853 1, 1, 1, /* Any, AllAny, Anybyte */ \
1854 3, 3, /* \P, \p */ \
1855 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1856 1, /* \X */ \
1857 1, 1, 1, 1, 1, 1, /* \Z, \z, ^, ^M, $, $M */ \
1858 2, /* Char - the minimum length */ \
1859 2, /* Chari - the minimum length */ \
1860 2, /* not */ \
1861 2, /* noti */ \
1862 /* Positive single-char repeats ** These are */ \
1863 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
1864 2+IMM2_SIZE, 2+IMM2_SIZE, /* upto, minupto ** mode */ \
1865 2+IMM2_SIZE, /* exact */ \
1866 2, 2, 2, 2+IMM2_SIZE, /* *+, ++, ?+, upto+ */ \
1867 2, 2, 2, 2, 2, 2, /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8 */ \
1868 2+IMM2_SIZE, 2+IMM2_SIZE, /* upto I, minupto I */ \
1869 2+IMM2_SIZE, /* exact I */ \
1870 2, 2, 2, 2+IMM2_SIZE, /* *+I, ++I, ?+I, upto+I */ \
1871 /* Negative single-char repeats - only for chars < 256 */ \
1872 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
1873 2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto, minupto */ \
1874 2+IMM2_SIZE, /* NOT exact */ \
1875 2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *, +, ?, upto */ \
1876 2, 2, 2, 2, 2, 2, /* NOT *I, *?I, +I, +?I, ?I, ??I */ \
1877 2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto I, minupto I */ \
1878 2+IMM2_SIZE, /* NOT exact I */ \
1879 2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *I, +I, ?I, upto I */ \
1880 /* Positive type repeats */ \
1881 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
1882 2+IMM2_SIZE, 2+IMM2_SIZE, /* Type upto, minupto */ \
1883 2+IMM2_SIZE, /* Type exact */ \
1884 2, 2, 2, 2+IMM2_SIZE, /* Possessive *+, ++, ?+, upto+ */ \
1885 /* Character class & ref repeats */ \
1886 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1887 1+2*IMM2_SIZE, 1+2*IMM2_SIZE, /* CRRANGE, CRMINRANGE */ \
1888 1+(32/sizeof(pcre_uchar)), /* CLASS */ \
1889 1+(32/sizeof(pcre_uchar)), /* NCLASS */ \
1890 0, /* XCLASS - variable length */ \
1891 1+IMM2_SIZE, /* REF */ \
1892 1+IMM2_SIZE, /* REFI */ \
1893 1+LINK_SIZE, /* RECURSE */ \
1894 2+2*LINK_SIZE, /* CALLOUT */ \
1895 1+LINK_SIZE, /* Alt */ \
1896 1+LINK_SIZE, /* Ket */ \
1897 1+LINK_SIZE, /* KetRmax */ \
1898 1+LINK_SIZE, /* KetRmin */ \
1899 1+LINK_SIZE, /* KetRpos */ \
1900 1+LINK_SIZE, /* Reverse */ \
1901 1+LINK_SIZE, /* Assert */ \
1902 1+LINK_SIZE, /* Assert not */ \
1903 1+LINK_SIZE, /* Assert behind */ \
1904 1+LINK_SIZE, /* Assert behind not */ \
1905 1+LINK_SIZE, /* ONCE */ \
1906 1+LINK_SIZE, /* ONCE_NC */ \
1907 1+LINK_SIZE, /* BRA */ \
1908 1+LINK_SIZE, /* BRAPOS */ \
1909 1+LINK_SIZE+IMM2_SIZE, /* CBRA */ \
1910 1+LINK_SIZE+IMM2_SIZE, /* CBRAPOS */ \
1911 1+LINK_SIZE, /* COND */ \
1912 1+LINK_SIZE, /* SBRA */ \
1913 1+LINK_SIZE, /* SBRAPOS */ \
1914 1+LINK_SIZE+IMM2_SIZE, /* SCBRA */ \
1915 1+LINK_SIZE+IMM2_SIZE, /* SCBRAPOS */ \
1916 1+LINK_SIZE, /* SCOND */ \
1917 1+IMM2_SIZE, 1+IMM2_SIZE, /* CREF, NCREF */ \
1918 1+IMM2_SIZE, 1+IMM2_SIZE, /* RREF, NRREF */ \
1919 1, /* DEF */ \
1920 1, 1, 1, /* BRAZERO, BRAMINZERO, BRAPOSZERO */ \
1921 3, 1, 3, /* MARK, PRUNE, PRUNE_ARG */ \
1922 1, 3, /* SKIP, SKIP_ARG */ \
1923 1, 3, /* THEN, THEN_ARG */ \
1924 1, 1, 1, 1, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */ \
1925 1+IMM2_SIZE, 1 /* CLOSE, SKIPZERO */
1926
1927 /* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion"
1928 condition. */
1929
1930 #define RREF_ANY 0xffff
1931
1932 /* Compile time error code numbers. They are given names so that they can more
1933 easily be tracked. When a new number is added, the table called eint in
1934 pcreposix.c must be updated. */
1935
1936 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
1937 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
1938 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
1939 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1940 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1941 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1942 ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
1943 ERR70, ERR71, ERR72, ERR73, ERR74, ERRCOUNT };
1944
1945 /* JIT compiling modes. The function list is indexed by them. */
1946 enum { JIT_COMPILE, JIT_PARTIAL_SOFT_COMPILE, JIT_PARTIAL_HARD_COMPILE,
1947 JIT_NUMBER_OF_COMPILE_TYPES };
1948
1949 /* The real format of the start of the pcre block; the index of names and the
1950 code vector run on as long as necessary after the end. We store an explicit
1951 offset to the name table so that if a regex is compiled on one host, saved, and
1952 then run on another where the size of pointers is different, all might still
1953 be well. For the case of compiled-on-4 and run-on-8, we include an extra
1954 pointer that is always NULL. For future-proofing, a few dummy fields were
1955 originally included - even though you can never get this planning right - but
1956 there is only one left now.
1957
1958 NOTE NOTE NOTE:
1959 Because people can now save and re-use compiled patterns, any additions to this
1960 structure should be made at the end, and something earlier (e.g. a new
1961 flag in the options or one of the dummy fields) should indicate that the new
1962 fields are present. Currently PCRE always sets the dummy fields to zero.
1963 NOTE NOTE NOTE
1964 */
1965
1966 #ifdef COMPILE_PCRE8
1967 #define REAL_PCRE real_pcre
1968 #else
1969 #define REAL_PCRE real_pcre16
1970 #endif
1971
1972 typedef struct REAL_PCRE {
1973 pcre_uint32 magic_number;
1974 pcre_uint32 size; /* Total that was malloced */
1975 pcre_uint32 options; /* Public options */
1976 pcre_uint16 flags; /* Private flags */
1977 pcre_uint16 dummy1; /* For future use */
1978 pcre_uint16 top_bracket;
1979 pcre_uint16 top_backref;
1980 pcre_uint16 first_char; /* Starting character */
1981 pcre_uint16 req_char; /* This character must be seen */
1982 pcre_uint16 name_table_offset; /* Offset to name table that follows */
1983 pcre_uint16 name_entry_size; /* Size of any name items */
1984 pcre_uint16 name_count; /* Number of name items */
1985 pcre_uint16 ref_count; /* Reference count */
1986
1987 const pcre_uint8 *tables; /* Pointer to tables or NULL for std */
1988 const pcre_uint8 *nullpad; /* NULL padding */
1989 } REAL_PCRE;
1990
1991 /* The format of the block used to store data from pcre_study(). The same
1992 remark (see NOTE above) about extending this structure applies. */
1993
1994 typedef struct pcre_study_data {
1995 pcre_uint32 size; /* Total that was malloced */
1996 pcre_uint32 flags; /* Private flags */
1997 pcre_uint8 start_bits[32]; /* Starting char bits */
1998 pcre_uint32 minlength; /* Minimum subject length */
1999 } pcre_study_data;
2000
2001 /* Structure for building a chain of open capturing subpatterns during
2002 compiling, so that instructions to close them can be compiled when (*ACCEPT) is
2003 encountered. This is also used to identify subpatterns that contain recursive
2004 back references to themselves, so that they can be made atomic. */
2005
2006 typedef struct open_capitem {
2007 struct open_capitem *next; /* Chain link */
2008 pcre_uint16 number; /* Capture number */
2009 pcre_uint16 flag; /* Set TRUE if recursive back ref */
2010 } open_capitem;
2011
2012 /* Structure for passing "static" information around between the functions
2013 doing the compiling, so that they are thread-safe. */
2014
2015 typedef struct compile_data {
2016 const pcre_uint8 *lcc; /* Points to lower casing table */
2017 const pcre_uint8 *fcc; /* Points to case-flipping table */
2018 const pcre_uint8 *cbits; /* Points to character type table */
2019 const pcre_uint8 *ctypes; /* Points to table of type maps */
2020 const pcre_uchar *start_workspace;/* The start of working space */
2021 const pcre_uchar *start_code; /* The start of the compiled code */
2022 const pcre_uchar *start_pattern; /* The start of the pattern */
2023 const pcre_uchar *end_pattern; /* The end of the pattern */
2024 open_capitem *open_caps; /* Chain of open capture items */
2025 pcre_uchar *hwm; /* High watermark of workspace */
2026 pcre_uchar *name_table; /* The name/number table */
2027 int names_found; /* Number of entries so far */
2028 int name_entry_size; /* Size of each entry */
2029 int workspace_size; /* Size of workspace */
2030 int bracount; /* Count of capturing parens as we compile */
2031 int final_bracount; /* Saved value after first pass */
2032 int top_backref; /* Maximum back reference */
2033 unsigned int backref_map; /* Bitmap of low back refs */
2034 int assert_depth; /* Depth of nested assertions */
2035 int external_options; /* External (initial) options */
2036 int external_flags; /* External flag bits to be set */
2037 int req_varyopt; /* "After variable item" flag for reqbyte */
2038 BOOL had_accept; /* (*ACCEPT) encountered */
2039 BOOL check_lookbehind; /* Lookbehinds need later checking */
2040 int nltype; /* Newline type */
2041 int nllen; /* Newline string length */
2042 pcre_uchar nl[4]; /* Newline string when fixed length */
2043 } compile_data;
2044
2045 /* Structure for maintaining a chain of pointers to the currently incomplete
2046 branches, for testing for left recursion while compiling. */
2047
2048 typedef struct branch_chain {
2049 struct branch_chain *outer;
2050 pcre_uchar *current_branch;
2051 } branch_chain;
2052
2053 /* Structure for items in a linked list that represents an explicit recursive
2054 call within the pattern; used by pcre_exec(). */
2055
2056 typedef struct recursion_info {
2057 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
2058 int group_num; /* Number of group that was called */
2059 int *offset_save; /* Pointer to start of saved offsets */
2060 int saved_max; /* Number of saved offsets */
2061 PCRE_PUCHAR subject_position; /* Position at start of recursion */
2062 } recursion_info;
2063
2064 /* A similar structure for pcre_dfa_exec(). */
2065
2066 typedef struct dfa_recursion_info {
2067 struct dfa_recursion_info *prevrec;
2068 int group_num;
2069 PCRE_PUCHAR subject_position;
2070 } dfa_recursion_info;
2071
2072 /* Structure for building a chain of data for holding the values of the subject
2073 pointer at the start of each subpattern, so as to detect when an empty string
2074 has been matched by a subpattern - to break infinite loops; used by
2075 pcre_exec(). */
2076
2077 typedef struct eptrblock {
2078 struct eptrblock *epb_prev;
2079 PCRE_PUCHAR epb_saved_eptr;
2080 } eptrblock;
2081
2082
2083 /* Structure for passing "static" information around between the functions
2084 doing traditional NFA matching, so that they are thread-safe. */
2085
2086 typedef struct match_data {
2087 unsigned long int match_call_count; /* As it says */
2088 unsigned long int match_limit; /* As it says */
2089 unsigned long int match_limit_recursion; /* As it says */
2090 int *offset_vector; /* Offset vector */
2091 int offset_end; /* One past the end */
2092 int offset_max; /* The maximum usable for return data */
2093 int nltype; /* Newline type */
2094 int nllen; /* Newline string length */
2095 int name_count; /* Number of names in name table */
2096 int name_entry_size; /* Size of entry in names table */
2097 pcre_uchar *name_table; /* Table of names */
2098 pcre_uchar nl[4]; /* Newline string when fixed */
2099 const pcre_uint8 *lcc; /* Points to lower casing table */
2100 const pcre_uint8 *fcc; /* Points to case-flipping table */
2101 const pcre_uint8 *ctypes; /* Points to table of type maps */
2102 BOOL offset_overflow; /* Set if too many extractions */
2103 BOOL notbol; /* NOTBOL flag */
2104 BOOL noteol; /* NOTEOL flag */
2105 BOOL utf; /* UTF-8 / UTF-16 flag */
2106 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
2107 BOOL use_ucp; /* PCRE_UCP flag */
2108 BOOL endonly; /* Dollar not before final \n */
2109 BOOL notempty; /* Empty string match not wanted */
2110 BOOL notempty_atstart; /* Empty string match at start not wanted */
2111 BOOL hitend; /* Hit the end of the subject at some point */
2112 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
2113 BOOL hasthen; /* Pattern contains (*THEN) */
2114 BOOL ignore_skip_arg; /* For re-run when SKIP name not found */
2115 const pcre_uchar *start_code; /* For use when recursing */
2116 PCRE_PUCHAR start_subject; /* Start of the subject string */
2117 PCRE_PUCHAR end_subject; /* End of the subject string */
2118 PCRE_PUCHAR start_match_ptr; /* Start of matched string */
2119 PCRE_PUCHAR end_match_ptr; /* Subject position at end match */
2120 PCRE_PUCHAR start_used_ptr; /* Earliest consulted character */
2121 int partial; /* PARTIAL options */
2122 int end_offset_top; /* Highwater mark at end of match */
2123 int capture_last; /* Most recent capture number */
2124 int start_offset; /* The start offset value */
2125 int match_function_type; /* Set for certain special calls of MATCH() */
2126 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
2127 int eptrn; /* Next free eptrblock */
2128 recursion_info *recursive; /* Linked list of recursion data */
2129 void *callout_data; /* To pass back to callouts */
2130 const pcre_uchar *mark; /* Mark pointer to pass back on success */
2131 const pcre_uchar *nomatch_mark;/* Mark pointer to pass back on failure */
2132 const pcre_uchar *once_target; /* Where to back up to for atomic groups */
2133 } match_data;
2134
2135 /* A similar structure is used for the same purpose by the DFA matching
2136 functions. */
2137
2138 typedef struct dfa_match_data {
2139 const pcre_uchar *start_code; /* Start of the compiled pattern */
2140 const pcre_uchar *start_subject ; /* Start of the subject string */
2141 const pcre_uchar *end_subject; /* End of subject string */
2142 const pcre_uchar *start_used_ptr; /* Earliest consulted character */
2143 const pcre_uint8 *tables; /* Character tables */
2144 int start_offset; /* The start offset value */
2145 int moptions; /* Match options */
2146 int poptions; /* Pattern options */
2147 int nltype; /* Newline type */
2148 int nllen; /* Newline string length */
2149 pcre_uchar nl[4]; /* Newline string when fixed */
2150 void *callout_data; /* To pass back to callouts */
2151 dfa_recursion_info *recursive; /* Linked list of recursion data */
2152 } dfa_match_data;
2153
2154 /* Bit definitions for entries in the pcre_ctypes table. */
2155
2156 #define ctype_space 0x01
2157 #define ctype_letter 0x02
2158 #define ctype_digit 0x04
2159 #define ctype_xdigit 0x08
2160 #define ctype_word 0x10 /* alphanumeric or '_' */
2161 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
2162
2163 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
2164 of bits for a class map. Some classes are built by combining these tables. */
2165
2166 #define cbit_space 0 /* [:space:] or \s */
2167 #define cbit_xdigit 32 /* [:xdigit:] */
2168 #define cbit_digit 64 /* [:digit:] or \d */
2169 #define cbit_upper 96 /* [:upper:] */
2170 #define cbit_lower 128 /* [:lower:] */
2171 #define cbit_word 160 /* [:word:] or \w */
2172 #define cbit_graph 192 /* [:graph:] */
2173 #define cbit_print 224 /* [:print:] */
2174 #define cbit_punct 256 /* [:punct:] */
2175 #define cbit_cntrl 288 /* [:cntrl:] */
2176 #define cbit_length 320 /* Length of the cbits table */
2177
2178 /* Offsets of the various tables from the base tables pointer, and
2179 total length. */
2180
2181 #define lcc_offset 0
2182 #define fcc_offset 256
2183 #define cbits_offset 512
2184 #define ctypes_offset (cbits_offset + cbit_length)
2185 #define tables_length (ctypes_offset + 256)
2186
2187 /* Internal function and data prefixes. */
2188
2189 #ifdef COMPILE_PCRE8
2190 #ifndef PUBL
2191 #define PUBL(name) pcre_##name
2192 #endif
2193 #ifndef PRIV
2194 #define PRIV(name) _pcre_##name
2195 #endif
2196 #else /* COMPILE_PCRE8 */
2197 #ifdef COMPILE_PCRE16
2198 #ifndef PUBL
2199 #define PUBL(name) pcre16_##name
2200 #endif
2201 #ifndef PRIV
2202 #define PRIV(name) _pcre16_##name
2203 #endif
2204 #else
2205 #error Unsupported compiling mode
2206 #endif /* COMPILE_PCRE16 */
2207 #endif /* COMPILE_PCRE8 */
2208
2209 /* Layout of the UCP type table that translates property names into types and
2210 codes. Each entry used to point directly to a name, but to reduce the number of
2211 relocations in shared libraries, it now has an offset into a single string
2212 instead. */
2213
2214 typedef struct {
2215 pcre_uint16 name_offset;
2216 pcre_uint16 type;
2217 pcre_uint16 value;
2218 } ucp_type_table;
2219
2220
2221 /* Internal shared data tables. These are tables that are used by more than one
2222 of the exported public functions. They have to be "external" in the C sense,
2223 but are not part of the PCRE public API. The data for these tables is in the
2224 pcre_tables.c module. */
2225
2226 #ifdef COMPILE_PCRE8
2227
2228 extern const int PRIV(utf8_table1)[];
2229 extern const int PRIV(utf8_table1_size);
2230 extern const int PRIV(utf8_table2)[];
2231 extern const int PRIV(utf8_table3)[];
2232 extern const pcre_uint8 PRIV(utf8_table4)[];
2233
2234 #endif /* COMPILE_PCRE8 */
2235
2236 extern const char PRIV(utt_names)[];
2237 extern const ucp_type_table PRIV(utt)[];
2238 extern const int PRIV(utt_size);
2239
2240 extern const pcre_uint8 PRIV(default_tables)[];
2241
2242 extern const pcre_uint8 PRIV(OP_lengths)[];
2243
2244
2245 /* Internal shared functions. These are functions that are used by more than
2246 one of the exported public functions. They have to be "external" in the C
2247 sense, but are not part of the PCRE public API. */
2248
2249 /* String comparison functions. */
2250 #ifdef COMPILE_PCRE8
2251
2252 #define STRCMP_UC_UC(str1, str2) \
2253 strcmp((char *)(str1), (char *)(str2))
2254 #define STRCMP_UC_C8(str1, str2) \
2255 strcmp((char *)(str1), (str2))
2256 #define STRNCMP_UC_UC(str1, str2, num) \
2257 strncmp((char *)(str1), (char *)(str2), (num))
2258 #define STRNCMP_UC_C8(str1, str2, num) \
2259 strncmp((char *)(str1), (str2), (num))
2260 #define STRLEN_UC(str) strlen((const char *)str)
2261
2262 #else
2263
2264 extern int PRIV(strcmp_uc_uc)(const pcre_uchar *,
2265 const pcre_uchar *);
2266 extern int PRIV(strcmp_uc_c8)(const pcre_uchar *,
2267 const char *);
2268 extern int PRIV(strncmp_uc_uc)(const pcre_uchar *,
2269 const pcre_uchar *, unsigned int num);
2270 extern int PRIV(strncmp_uc_c8)(const pcre_uchar *,
2271 const char *, unsigned int num);
2272 extern unsigned int PRIV(strlen_uc)(const pcre_uchar *str);
2273
2274 #define STRCMP_UC_UC(str1, str2) \
2275 PRIV(strcmp_uc_uc)((str1), (str2))
2276 #define STRCMP_UC_C8(str1, str2) \
2277 PRIV(strcmp_uc_c8)((str1), (str2))
2278 #define STRNCMP_UC_UC(str1, str2, num) \
2279 PRIV(strncmp_uc_uc)((str1), (str2), (num))
2280 #define STRNCMP_UC_C8(str1, str2, num) \
2281 PRIV(strncmp_uc_c8)((str1), (str2), (num))
2282 #define STRLEN_UC(str) PRIV(strlen_uc)(str)
2283
2284 #endif /* COMPILE_PCRE8 */
2285
2286 extern const pcre_uchar *PRIV(find_bracket)(const pcre_uchar *, BOOL, int);
2287 extern BOOL PRIV(is_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2288 int *, BOOL);
2289 extern int PRIV(ord2utf)(pcre_uint32, pcre_uchar *);
2290 extern int PRIV(valid_utf)(PCRE_PUCHAR, int, int *);
2291 extern BOOL PRIV(was_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2292 int *, BOOL);
2293 extern BOOL PRIV(xclass)(int, const pcre_uchar *, BOOL);
2294
2295 #ifdef SUPPORT_JIT
2296 extern void PRIV(jit_compile)(const REAL_PCRE *, PUBL(extra) *, int);
2297 extern int PRIV(jit_exec)(const REAL_PCRE *, void *,
2298 const pcre_uchar *, int, int, int, int, int *, int);
2299 extern void PRIV(jit_free)(void *);
2300 extern int PRIV(jit_get_size)(void *);
2301 extern const char* PRIV(jit_get_target)(void);
2302 #endif
2303
2304 /* Unicode character database (UCD) */
2305
2306 typedef struct {
2307 pcre_uint8 script;
2308 pcre_uint8 chartype;
2309 pcre_int32 other_case;
2310 } ucd_record;
2311
2312 extern const ucd_record PRIV(ucd_records)[];
2313 extern const pcre_uint8 PRIV(ucd_stage1)[];
2314 extern const pcre_uint16 PRIV(ucd_stage2)[];
2315 extern const int PRIV(ucp_gentype)[];
2316 #ifdef SUPPORT_JIT
2317 extern const int PRIV(ucp_typerange)[];
2318 #endif
2319
2320 #ifdef SUPPORT_UCP
2321 /* UCD access macros */
2322
2323 #define UCD_BLOCK_SIZE 128
2324 #define GET_UCD(ch) (PRIV(ucd_records) + \
2325 PRIV(ucd_stage2)[PRIV(ucd_stage1)[(ch) / UCD_BLOCK_SIZE] * \
2326 UCD_BLOCK_SIZE + (ch) % UCD_BLOCK_SIZE])
2327
2328 #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
2329 #define UCD_SCRIPT(ch) GET_UCD(ch)->script
2330 #define UCD_CATEGORY(ch) PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
2331 #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case)
2332
2333 #endif /* SUPPORT_UCP */
2334
2335 #endif
2336
2337 /* End of pcre_internal.h */

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