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tgupdate: merge pcreposix-compat base into pcreposix-compat
[pcreposix-compat.git] / pcre_internal.h
blob11b4aed2009181ac8e52721c5a41e468eed3b510
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) 1997-2016 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_", "_pcre16_" or "_pcre32_"
44 depending on 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
57 #if !defined COMPILE_PCRE16 && !defined COMPILE_PCRE32
58 #define COMPILE_PCRE8
59 #endif
60
61 /* If SUPPORT_UCP is defined, SUPPORT_UTF must also be defined. The
62 "configure" script ensures this, but not everybody uses "configure". */
63
64 #if defined SUPPORT_UCP && !(defined SUPPORT_UTF)
65 #define SUPPORT_UTF 1
66 #endif
67
68 /* We define SUPPORT_UTF if SUPPORT_UTF8 is enabled for compatibility
69 reasons with existing code. */
70
71 #if defined SUPPORT_UTF8 && !(defined SUPPORT_UTF)
72 #define SUPPORT_UTF 1
73 #endif
74
75 /* Fixme: SUPPORT_UTF8 should be eventually disappear from the code.
76 Until then we define it if SUPPORT_UTF is defined. */
77
78 #if defined SUPPORT_UTF && !(defined SUPPORT_UTF8)
79 #define SUPPORT_UTF8 1
80 #endif
81
82 /* We do not support both EBCDIC and UTF-8/16/32 at the same time. The "configure"
83 script prevents both being selected, but not everybody uses "configure". */
84
85 #if defined EBCDIC && defined SUPPORT_UTF
86 #error The use of both EBCDIC and SUPPORT_UTF is not supported.
87 #endif
88
89 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
90 inline, and there are *still* stupid compilers about that don't like indented
91 pre-processor statements, or at least there were when I first wrote this. After
92 all, it had only been about 10 years then...
93
94 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
95 be absolutely sure we get our version. */
96
97 #undef DPRINTF
98 #ifdef PCRE_DEBUG
99 #define DPRINTF(p) printf p
100 #else
101 #define DPRINTF(p) /* Nothing */
102 #endif
103
104
105 /* Standard C headers plus the external interface definition. The only time
106 setjmp and stdarg are used is when NO_RECURSE is set. */
107
108 #include <ctype.h>
109 #include <limits.h>
110 #include <stddef.h>
111 #include <stdio.h>
112 #include <stdlib.h>
113 #include <string.h>
114
115 /* Valgrind (memcheck) support */
116
117 #ifdef SUPPORT_VALGRIND
118 #include <valgrind/memcheck.h>
119 #endif
120
121 /* When compiling a DLL for Windows, the exported symbols have to be declared
122 using some MS magic. I found some useful information on this web page:
123 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
124 information there, using __declspec(dllexport) without "extern" we have a
125 definition; with "extern" we have a declaration. The settings here override the
126 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
127 which is all that is needed for applications (they just import the symbols). We
128 use:
129
130 PCRE_EXP_DECL for declarations
131 PCRE_EXP_DEFN for definitions of exported functions
132 PCRE_EXP_DATA_DEFN for definitions of exported variables
133
134 The reason for the two DEFN macros is that in non-Windows environments, one
135 does not want to have "extern" before variable definitions because it leads to
136 compiler warnings. So we distinguish between functions and variables. In
137 Windows, the two should always be the same.
138
139 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
140 which is an application, but needs to import this file in order to "peek" at
141 internals, can #include pcre.h first to get an application's-eye view.
142
143 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
144 special-purpose environments) might want to stick other stuff in front of
145 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
146 PCRE_EXP_DATA_DEFN only if they are not already set. */
147
148 #ifndef PCRE_EXP_DECL
149 # ifdef _WIN32
150 # ifndef PCRE_STATIC
151 # define PCRE_EXP_DECL extern __declspec(dllexport)
152 # define PCRE_EXP_DEFN __declspec(dllexport)
153 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
154 # else
155 # define PCRE_EXP_DECL extern
156 # define PCRE_EXP_DEFN
157 # define PCRE_EXP_DATA_DEFN
158 # endif
159 # else
160 # ifdef __cplusplus
161 # define PCRE_EXP_DECL extern "C"
162 # else
163 # define PCRE_EXP_DECL extern
164 # endif
165 # ifndef PCRE_EXP_DEFN
166 # define PCRE_EXP_DEFN PCRE_EXP_DECL
167 # endif
168 # ifndef PCRE_EXP_DATA_DEFN
169 # define PCRE_EXP_DATA_DEFN
170 # endif
171 # endif
172 #endif
173
174 /* When compiling with the MSVC compiler, it is sometimes necessary to include
175 a "calling convention" before exported function names. (This is secondhand
176 information; I know nothing about MSVC myself). For example, something like
177
178 void __cdecl function(....)
179
180 might be needed. In order so make this easy, all the exported functions have
181 PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
182 set, we ensure here that it has no effect. */
183
184 #ifndef PCRE_CALL_CONVENTION
185 #define PCRE_CALL_CONVENTION
186 #endif
187
188 /* We need to have types that specify unsigned 8, 16 and 32-bit integers. We
189 cannot determine these outside the compilation (e.g. by running a program as
190 part of "configure") because PCRE is often cross-compiled for use on other
191 systems. Instead we make use of the maximum sizes that are available at
192 preprocessor time in standard C environments. */
193
194 typedef unsigned char pcre_uint8;
195
196 #if USHRT_MAX == 65535
197 typedef unsigned short pcre_uint16;
198 typedef short pcre_int16;
199 #define PCRE_UINT16_MAX USHRT_MAX
200 #define PCRE_INT16_MAX SHRT_MAX
201 #elif UINT_MAX == 65535
202 typedef unsigned int pcre_uint16;
203 typedef int pcre_int16;
204 #define PCRE_UINT16_MAX UINT_MAX
205 #define PCRE_INT16_MAX INT_MAX
206 #else
207 #error Cannot determine a type for 16-bit integers
208 #endif
209
210 #if UINT_MAX == 4294967295U
211 typedef unsigned int pcre_uint32;
212 typedef int pcre_int32;
213 #define PCRE_UINT32_MAX UINT_MAX
214 #define PCRE_INT32_MAX INT_MAX
215 #elif ULONG_MAX == 4294967295UL
216 typedef unsigned long int pcre_uint32;
217 typedef long int pcre_int32;
218 #define PCRE_UINT32_MAX ULONG_MAX
219 #define PCRE_INT32_MAX LONG_MAX
220 #else
221 #error Cannot determine a type for 32-bit integers
222 #endif
223
224 /* When checking for integer overflow in pcre_compile(), we need to handle
225 large integers. If a 64-bit integer type is available, we can use that.
226 Otherwise we have to cast to double, which of course requires floating point
227 arithmetic. Handle this by defining a macro for the appropriate type. If
228 stdint.h is available, include it; it may define INT64_MAX. Systems that do not
229 have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
230 by "configure". */
231
232 #if defined HAVE_STDINT_H
233 #include <stdint.h>
234 #elif defined HAVE_INTTYPES_H
235 #include <inttypes.h>
236 #endif
237
238 #if !defined(UINTPTR_MAX) && !defined(uintptr_t) && !defined(HAVE_INTTYPES_H)
239 #error Cannot determine a type for pointer-sized unsigned integers
240 #endif
241
242 #if defined INT64_MAX || defined int64_t
243 #define INT64_OR_DOUBLE int64_t
244 #else
245 #define INT64_OR_DOUBLE double
246 #endif
247
248 /* All character handling must be done as unsigned characters. Otherwise there
249 are problems with top-bit-set characters and functions such as isspace().
250 However, we leave the interface to the outside world as char * or short *,
251 because that should make things easier for callers. This character type is
252 called pcre_uchar.
253
254 The IN_UCHARS macro multiply its argument with the byte size of the current
255 pcre_uchar type. Useful for memcpy and such operations, whose require the
256 byte size of their input/output buffers.
257
258 The MAX_255 macro checks whether its pcre_uchar input is less than 256.
259
260 The TABLE_GET macro is designed for accessing elements of tables whose contain
261 exactly 256 items. When the character is able to contain more than 256
262 items, some check is needed before accessing these tables.
263 */
264
265 #if defined COMPILE_PCRE8
266
267 typedef unsigned char pcre_uchar;
268 #define IN_UCHARS(x) (x)
269 #define MAX_255(c) 1
270 #define TABLE_GET(c, table, default) ((table)[c])
271
272 #elif defined COMPILE_PCRE16
273
274 #if USHRT_MAX != 65535
275 /* This is a warning message. Change PCRE_UCHAR16 to a 16 bit data type in
276 pcre.h(.in) and disable (comment out) this message. */
277 #error Warning: PCRE_UCHAR16 is not a 16 bit data type.
278 #endif
279
280 typedef pcre_uint16 pcre_uchar;
281 #define UCHAR_SHIFT (1)
282 #define IN_UCHARS(x) ((x) * 2)
283 #define MAX_255(c) ((c) <= 255u)
284 #define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
285
286 #elif defined COMPILE_PCRE32
287
288 typedef pcre_uint32 pcre_uchar;
289 #define UCHAR_SHIFT (2)
290 #define IN_UCHARS(x) ((x) * 4)
291 #define MAX_255(c) ((c) <= 255u)
292 #define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
293
294 #else
295 #error Unsupported compiling mode
296 #endif /* COMPILE_PCRE[8|16|32] */
297
298 /* This is an unsigned int value that no character can ever have. UTF-8
299 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
300 0x0010ffff). */
301
302 #define NOTACHAR 0xffffffff
303
304 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
305 "any" and "anycrlf" at present). The following macros are used to package up
306 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
307 modules to indicate in which datablock the parameters exist, and what the
308 start/end of string field names are. */
309
310 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
311 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
312 #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
313
314 /* This macro checks for a newline at the given position */
315
316 #define IS_NEWLINE(p) \
317 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
318 ((p) < NLBLOCK->PSEND && \
319 PRIV(is_newline)((p), NLBLOCK->nltype, NLBLOCK->PSEND, \
320 &(NLBLOCK->nllen), utf)) \
321 : \
322 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
323 UCHAR21TEST(p) == NLBLOCK->nl[0] && \
324 (NLBLOCK->nllen == 1 || UCHAR21TEST(p+1) == NLBLOCK->nl[1]) \
325 ) \
326 )
327
328 /* This macro checks for a newline immediately preceding the given position */
329
330 #define WAS_NEWLINE(p) \
331 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
332 ((p) > NLBLOCK->PSSTART && \
333 PRIV(was_newline)((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
334 &(NLBLOCK->nllen), utf)) \
335 : \
336 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
337 UCHAR21TEST(p - NLBLOCK->nllen) == NLBLOCK->nl[0] && \
338 (NLBLOCK->nllen == 1 || UCHAR21TEST(p - NLBLOCK->nllen + 1) == NLBLOCK->nl[1]) \
339 ) \
340 )
341
342 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
343 with a custom type. This makes it possible, for example, to allow pcre_exec()
344 to process subject strings that are discontinuous by using a smart pointer
345 class. It must always be possible to inspect all of the subject string in
346 pcre_exec() because of the way it backtracks. Two macros are required in the
347 normal case, for sign-unspecified and unsigned char pointers. The former is
348 used for the external interface and appears in pcre.h, which is why its name
349 must begin with PCRE_. */
350
351 #ifdef CUSTOM_SUBJECT_PTR
352 #define PCRE_PUCHAR CUSTOM_SUBJECT_PTR
353 #else
354 #define PCRE_PUCHAR const pcre_uchar *
355 #endif
356
357 /* Include the public PCRE header and the definitions of UCP character property
358 values. */
359
360 #include "pcre.h"
361 #include "ucp.h"
362
363 #ifdef COMPILE_PCRE32
364 /* Assert that the public PCRE_UCHAR32 is a 32-bit type */
365 typedef int __assert_pcre_uchar32_size[sizeof(PCRE_UCHAR32) == 4 ? 1 : -1];
366 #endif
367
368 /* When compiling for use with the Virtual Pascal compiler, these functions
369 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
370 option on the command line. */
371
372 #ifdef VPCOMPAT
373 #define strlen(s) _strlen(s)
374 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
375 #define memcmp(s,c,n) _memcmp(s,c,n)
376 #define memcpy(d,s,n) _memcpy(d,s,n)
377 #define memmove(d,s,n) _memmove(d,s,n)
378 #define memset(s,c,n) _memset(s,c,n)
379 #else /* VPCOMPAT */
380
381 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
382 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
383 is set. Otherwise, include an emulating function for those systems that have
384 neither (there some non-Unix environments where this is the case). */
385
386 #ifndef HAVE_MEMMOVE
387 #undef memmove /* some systems may have a macro */
388 #ifdef HAVE_BCOPY
389 #define memmove(a, b, c) bcopy(b, a, c)
390 #else /* HAVE_BCOPY */
391 static void *
392 pcre_memmove(void *d, const void *s, size_t n)
393 {
394 size_t i;
395 unsigned char *dest = (unsigned char *)d;
396 const unsigned char *src = (const unsigned char *)s;
397 if (dest > src)
398 {
399 dest += n;
400 src += n;
401 for (i = 0; i < n; ++i) *(--dest) = *(--src);
402 return (void *)dest;
403 }
404 else
405 {
406 for (i = 0; i < n; ++i) *dest++ = *src++;
407 return (void *)(dest - n);
408 }
409 }
410 #define memmove(a, b, c) pcre_memmove(a, b, c)
411 #endif /* not HAVE_BCOPY */
412 #endif /* not HAVE_MEMMOVE */
413 #endif /* not VPCOMPAT */
414
415
416 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
417 in big-endian order) by default. These are used, for example, to link from the
418 start of a subpattern to its alternatives and its end. The use of 2 bytes per
419 offset limits the size of the compiled regex to around 64K, which is big enough
420 for almost everybody. However, I received a request for an even bigger limit.
421 For this reason, and also to make the code easier to maintain, the storing and
422 loading of offsets from the byte string is now handled by the macros that are
423 defined here.
424
425 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
426 the config.h file, but can be overridden by using -D on the command line. This
427 is automated on Unix systems via the "configure" command. */
428
429 #if defined COMPILE_PCRE8
430
431 #if LINK_SIZE == 2
432
433 #define PUT(a,n,d) \
434 (a[n] = (d) >> 8), \
435 (a[(n)+1] = (d) & 255)
436
437 #define GET(a,n) \
438 (((a)[n] << 8) | (a)[(n)+1])
439
440 #define MAX_PATTERN_SIZE (1 << 16)
441
442
443 #elif LINK_SIZE == 3
444
445 #define PUT(a,n,d) \
446 (a[n] = (d) >> 16), \
447 (a[(n)+1] = (d) >> 8), \
448 (a[(n)+2] = (d) & 255)
449
450 #define GET(a,n) \
451 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
452
453 #define MAX_PATTERN_SIZE (1 << 24)
454
455
456 #elif LINK_SIZE == 4
457
458 #define PUT(a,n,d) \
459 (a[n] = (d) >> 24), \
460 (a[(n)+1] = (d) >> 16), \
461 (a[(n)+2] = (d) >> 8), \
462 (a[(n)+3] = (d) & 255)
463
464 #define GET(a,n) \
465 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
466
467 /* Keep it positive */
468 #define MAX_PATTERN_SIZE (1 << 30)
469
470 #else
471 #error LINK_SIZE must be either 2, 3, or 4
472 #endif
473
474 #elif defined COMPILE_PCRE16
475
476 #if LINK_SIZE == 2
477
478 /* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
479 #undef LINK_SIZE
480 #define LINK_SIZE 1
481
482 #define PUT(a,n,d) \
483 (a[n] = (d))
484
485 #define GET(a,n) \
486 (a[n])
487
488 #define MAX_PATTERN_SIZE (1 << 16)
489
490 #elif LINK_SIZE == 3 || LINK_SIZE == 4
491
492 /* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
493 #undef LINK_SIZE
494 #define LINK_SIZE 2
495
496 #define PUT(a,n,d) \
497 (a[n] = (d) >> 16), \
498 (a[(n)+1] = (d) & 65535)
499
500 #define GET(a,n) \
501 (((a)[n] << 16) | (a)[(n)+1])
502
503 /* Keep it positive */
504 #define MAX_PATTERN_SIZE (1 << 30)
505
506 #else
507 #error LINK_SIZE must be either 2, 3, or 4
508 #endif
509
510 #elif defined COMPILE_PCRE32
511
512 /* Only supported LINK_SIZE is 4 */
513 /* Redefine LINK_SIZE as a multiple of sizeof(pcre_uchar) */
514 #undef LINK_SIZE
515 #define LINK_SIZE 1
516
517 #define PUT(a,n,d) \
518 (a[n] = (d))
519
520 #define GET(a,n) \
521 (a[n])
522
523 /* Keep it positive */
524 #define MAX_PATTERN_SIZE (1 << 30)
525
526 #else
527 #error Unsupported compiling mode
528 #endif /* COMPILE_PCRE[8|16|32] */
529
530 /* Convenience macro defined in terms of the others */
531
532 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
533
534
535 /* PCRE uses some other 2-byte quantities that do not change when the size of
536 offsets changes. There are used for repeat counts and for other things such as
537 capturing parenthesis numbers in back references. */
538
539 #if defined COMPILE_PCRE8
540
541 #define IMM2_SIZE 2
542
543 #define PUT2(a,n,d) \
544 a[n] = (d) >> 8; \
545 a[(n)+1] = (d) & 255
546
547 /* For reasons that I do not understand, the expression in this GET2 macro is
548 treated by gcc as a signed expression, even when a is declared as unsigned. It
549 seems that any kind of arithmetic results in a signed value. */
550
551 #define GET2(a,n) \
552 (unsigned int)(((a)[n] << 8) | (a)[(n)+1])
553
554 #elif defined COMPILE_PCRE16
555
556 #define IMM2_SIZE 1
557
558 #define PUT2(a,n,d) \
559 a[n] = d
560
561 #define GET2(a,n) \
562 a[n]
563
564 #elif defined COMPILE_PCRE32
565
566 #define IMM2_SIZE 1
567
568 #define PUT2(a,n,d) \
569 a[n] = d
570
571 #define GET2(a,n) \
572 a[n]
573
574 #else
575 #error Unsupported compiling mode
576 #endif /* COMPILE_PCRE[8|16|32] */
577
578 #define PUT2INC(a,n,d) PUT2(a,n,d), a += IMM2_SIZE
579
580 /* The maximum length of a MARK name is currently one data unit; it may be
581 changed in future to be a fixed number of bytes or to depend on LINK_SIZE. */
582
583 #if defined COMPILE_PCRE16 || defined COMPILE_PCRE32
584 #define MAX_MARK ((1u << 16) - 1)
585 #else
586 #define MAX_MARK ((1u << 8) - 1)
587 #endif
588
589 /* There is a proposed future special "UTF-21" mode, in which only the lowest
590 21 bits of a 32-bit character are interpreted as UTF, with the remaining 11
591 high-order bits available to the application for other uses. In preparation for
592 the future implementation of this mode, there are macros that load a data item
593 and, if in this special mode, mask it to 21 bits. These macros all have names
594 starting with UCHAR21. In all other modes, including the normal 32-bit
595 library, the macros all have the same simple definitions. When the new mode is
596 implemented, it is expected that these definitions will be varied appropriately
597 using #ifdef when compiling the library that supports the special mode. */
598
599 #define UCHAR21(eptr) (*(eptr))
600 #define UCHAR21TEST(eptr) (*(eptr))
601 #define UCHAR21INC(eptr) (*(eptr)++)
602 #define UCHAR21INCTEST(eptr) (*(eptr)++)
603
604 /* When UTF encoding is being used, a character is no longer just a single
605 byte in 8-bit mode or a single short in 16-bit mode. The macros for character
606 handling generate simple sequences when used in the basic mode, and more
607 complicated ones for UTF characters. GETCHARLENTEST and other macros are not
608 used when UTF is not supported. To make sure they can never even appear when
609 UTF support is omitted, we don't even define them. */
610
611 #ifndef SUPPORT_UTF
612
613 /* #define MAX_VALUE_FOR_SINGLE_CHAR */
614 /* #define HAS_EXTRALEN(c) */
615 /* #define GET_EXTRALEN(c) */
616 /* #define NOT_FIRSTCHAR(c) */
617 #define GETCHAR(c, eptr) c = *eptr;
618 #define GETCHARTEST(c, eptr) c = *eptr;
619 #define GETCHARINC(c, eptr) c = *eptr++;
620 #define GETCHARINCTEST(c, eptr) c = *eptr++;
621 #define GETCHARLEN(c, eptr, len) c = *eptr;
622 /* #define GETCHARLENTEST(c, eptr, len) */
623 /* #define BACKCHAR(eptr) */
624 /* #define FORWARDCHAR(eptr) */
625 /* #define ACROSSCHAR(condition, eptr, action) */
626
627 #else /* SUPPORT_UTF */
628
629 /* Tests whether the code point needs extra characters to decode. */
630
631 #define HASUTF8EXTRALEN(c) ((c) >= 0xc0)
632
633 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
634 advancing the pointer. */
635
636 #define GETUTF8(c, eptr) \
637 { \
638 if ((c & 0x20) == 0) \
639 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
640 else if ((c & 0x10) == 0) \
641 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
642 else if ((c & 0x08) == 0) \
643 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
644 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
645 else if ((c & 0x04) == 0) \
646 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
647 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
648 (eptr[4] & 0x3f); \
649 else \
650 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
651 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
652 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
653 }
654
655 /* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
656 the pointer. */
657
658 #define GETUTF8INC(c, eptr) \
659 { \
660 if ((c & 0x20) == 0) \
661 c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
662 else if ((c & 0x10) == 0) \
663 { \
664 c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
665 eptr += 2; \
666 } \
667 else if ((c & 0x08) == 0) \
668 { \
669 c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
670 ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
671 eptr += 3; \
672 } \
673 else if ((c & 0x04) == 0) \
674 { \
675 c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
676 ((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
677 (eptr[3] & 0x3f); \
678 eptr += 4; \
679 } \
680 else \
681 { \
682 c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
683 ((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
684 ((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
685 eptr += 5; \
686 } \
687 }
688
689 #if defined COMPILE_PCRE8
690
691 /* These macros were originally written in the form of loops that used data
692 from the tables whose names start with PRIV(utf8_table). They were rewritten by
693 a user so as not to use loops, because in some environments this gives a
694 significant performance advantage, and it seems never to do any harm. */
695
696 /* Tells the biggest code point which can be encoded as a single character. */
697
698 #define MAX_VALUE_FOR_SINGLE_CHAR 127
699
700 /* Tests whether the code point needs extra characters to decode. */
701
702 #define HAS_EXTRALEN(c) ((c) >= 0xc0)
703
704 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
705 Otherwise it has an undefined behaviour. */
706
707 #define GET_EXTRALEN(c) (PRIV(utf8_table4)[(c) & 0x3f])
708
709 /* Returns TRUE, if the given character is not the first character
710 of a UTF sequence. */
711
712 #define NOT_FIRSTCHAR(c) (((c) & 0xc0) == 0x80)
713
714 /* Get the next UTF-8 character, not advancing the pointer. This is called when
715 we know we are in UTF-8 mode. */
716
717 #define GETCHAR(c, eptr) \
718 c = *eptr; \
719 if (c >= 0xc0) GETUTF8(c, eptr);
720
721 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
722 pointer. */
723
724 #define GETCHARTEST(c, eptr) \
725 c = *eptr; \
726 if (utf && c >= 0xc0) GETUTF8(c, eptr);
727
728 /* Get the next UTF-8 character, advancing the pointer. This is called when we
729 know we are in UTF-8 mode. */
730
731 #define GETCHARINC(c, eptr) \
732 c = *eptr++; \
733 if (c >= 0xc0) GETUTF8INC(c, eptr);
734
735 /* Get the next character, testing for UTF-8 mode, and advancing the pointer.
736 This is called when we don't know if we are in UTF-8 mode. */
737
738 #define GETCHARINCTEST(c, eptr) \
739 c = *eptr++; \
740 if (utf && c >= 0xc0) GETUTF8INC(c, eptr);
741
742 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
743 advancing the pointer, incrementing the length. */
744
745 #define GETUTF8LEN(c, eptr, len) \
746 { \
747 if ((c & 0x20) == 0) \
748 { \
749 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
750 len++; \
751 } \
752 else if ((c & 0x10) == 0) \
753 { \
754 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
755 len += 2; \
756 } \
757 else if ((c & 0x08) == 0) \
758 {\
759 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
760 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
761 len += 3; \
762 } \
763 else if ((c & 0x04) == 0) \
764 { \
765 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
766 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
767 (eptr[4] & 0x3f); \
768 len += 4; \
769 } \
770 else \
771 {\
772 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
773 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
774 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
775 len += 5; \
776 } \
777 }
778
779 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
780 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
781
782 #define GETCHARLEN(c, eptr, len) \
783 c = *eptr; \
784 if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
785
786 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
787 pointer, incrementing length if there are extra bytes. This is called when we
788 do not know if we are in UTF-8 mode. */
789
790 #define GETCHARLENTEST(c, eptr, len) \
791 c = *eptr; \
792 if (utf && c >= 0xc0) GETUTF8LEN(c, eptr, len);
793
794 /* If the pointer is not at the start of a character, move it back until
795 it is. This is called only in UTF-8 mode - we don't put a test within the macro
796 because almost all calls are already within a block of UTF-8 only code. */
797
798 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
799
800 /* Same as above, just in the other direction. */
801 #define FORWARDCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr++
802
803 /* Same as above, but it allows a fully customizable form. */
804 #define ACROSSCHAR(condition, eptr, action) \
805 while((condition) && ((eptr) & 0xc0) == 0x80) action
806
807 #elif defined COMPILE_PCRE16
808
809 /* Tells the biggest code point which can be encoded as a single character. */
810
811 #define MAX_VALUE_FOR_SINGLE_CHAR 65535
812
813 /* Tests whether the code point needs extra characters to decode. */
814
815 #define HAS_EXTRALEN(c) (((c) & 0xfc00) == 0xd800)
816
817 /* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
818 Otherwise it has an undefined behaviour. */
819
820 #define GET_EXTRALEN(c) 1
821
822 /* Returns TRUE, if the given character is not the first character
823 of a UTF sequence. */
824
825 #define NOT_FIRSTCHAR(c) (((c) & 0xfc00) == 0xdc00)
826
827 /* Base macro to pick up the low surrogate of a UTF-16 character, not
828 advancing the pointer. */
829
830 #define GETUTF16(c, eptr) \
831 { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; }
832
833 /* Get the next UTF-16 character, not advancing the pointer. This is called when
834 we know we are in UTF-16 mode. */
835
836 #define GETCHAR(c, eptr) \
837 c = *eptr; \
838 if ((c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
839
840 /* Get the next UTF-16 character, testing for UTF-16 mode, and not advancing the
841 pointer. */
842
843 #define GETCHARTEST(c, eptr) \
844 c = *eptr; \
845 if (utf && (c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
846
847 /* Base macro to pick up the low surrogate of a UTF-16 character, advancing
848 the pointer. */
849
850 #define GETUTF16INC(c, eptr) \
851 { c = (((c & 0x3ff) << 10) | (*eptr++ & 0x3ff)) + 0x10000; }
852
853 /* Get the next UTF-16 character, advancing the pointer. This is called when we
854 know we are in UTF-16 mode. */
855
856 #define GETCHARINC(c, eptr) \
857 c = *eptr++; \
858 if ((c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
859
860 /* Get the next character, testing for UTF-16 mode, and advancing the pointer.
861 This is called when we don't know if we are in UTF-16 mode. */
862
863 #define GETCHARINCTEST(c, eptr) \
864 c = *eptr++; \
865 if (utf && (c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
866
867 /* Base macro to pick up the low surrogate of a UTF-16 character, not
868 advancing the pointer, incrementing the length. */
869
870 #define GETUTF16LEN(c, eptr, len) \
871 { c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; len++; }
872
873 /* Get the next UTF-16 character, not advancing the pointer, incrementing
874 length if there is a low surrogate. This is called when we know we are in
875 UTF-16 mode. */
876
877 #define GETCHARLEN(c, eptr, len) \
878 c = *eptr; \
879 if ((c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
880
881 /* Get the next UTF-816character, testing for UTF-16 mode, not advancing the
882 pointer, incrementing length if there is a low surrogate. This is called when
883 we do not know if we are in UTF-16 mode. */
884
885 #define GETCHARLENTEST(c, eptr, len) \
886 c = *eptr; \
887 if (utf && (c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
888
889 /* If the pointer is not at the start of a character, move it back until
890 it is. This is called only in UTF-16 mode - we don't put a test within the
891 macro because almost all calls are already within a block of UTF-16 only
892 code. */
893
894 #define BACKCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr--
895
896 /* Same as above, just in the other direction. */
897 #define FORWARDCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr++
898
899 /* Same as above, but it allows a fully customizable form. */
900 #define ACROSSCHAR(condition, eptr, action) \
901 if ((condition) && ((eptr) & 0xfc00) == 0xdc00) action
902
903 #elif defined COMPILE_PCRE32
904
905 /* These are trivial for the 32-bit library, since all UTF-32 characters fit
906 into one pcre_uchar unit. */
907 #define MAX_VALUE_FOR_SINGLE_CHAR (0x10ffffu)
908 #define HAS_EXTRALEN(c) (0)
909 #define GET_EXTRALEN(c) (0)
910 #define NOT_FIRSTCHAR(c) (0)
911
912 /* Get the next UTF-32 character, not advancing the pointer. This is called when
913 we know we are in UTF-32 mode. */
914
915 #define GETCHAR(c, eptr) \
916 c = *(eptr);
917
918 /* Get the next UTF-32 character, testing for UTF-32 mode, and not advancing the
919 pointer. */
920
921 #define GETCHARTEST(c, eptr) \
922 c = *(eptr);
923
924 /* Get the next UTF-32 character, advancing the pointer. This is called when we
925 know we are in UTF-32 mode. */
926
927 #define GETCHARINC(c, eptr) \
928 c = *((eptr)++);
929
930 /* Get the next character, testing for UTF-32 mode, and advancing the pointer.
931 This is called when we don't know if we are in UTF-32 mode. */
932
933 #define GETCHARINCTEST(c, eptr) \
934 c = *((eptr)++);
935
936 /* Get the next UTF-32 character, not advancing the pointer, not incrementing
937 length (since all UTF-32 is of length 1). This is called when we know we are in
938 UTF-32 mode. */
939
940 #define GETCHARLEN(c, eptr, len) \
941 GETCHAR(c, eptr)
942
943 /* Get the next UTF-32character, testing for UTF-32 mode, not advancing the
944 pointer, not incrementing the length (since all UTF-32 is of length 1).
945 This is called when we do not know if we are in UTF-32 mode. */
946
947 #define GETCHARLENTEST(c, eptr, len) \
948 GETCHARTEST(c, eptr)
949
950 /* If the pointer is not at the start of a character, move it back until
951 it is. This is called only in UTF-32 mode - we don't put a test within the
952 macro because almost all calls are already within a block of UTF-32 only
953 code.
954 These are all no-ops since all UTF-32 characters fit into one pcre_uchar. */
955
956 #define BACKCHAR(eptr) do { } while (0)
957
958 /* Same as above, just in the other direction. */
959 #define FORWARDCHAR(eptr) do { } while (0)
960
961 /* Same as above, but it allows a fully customizable form. */
962 #define ACROSSCHAR(condition, eptr, action) do { } while (0)
963
964 #else
965 #error Unsupported compiling mode
966 #endif /* COMPILE_PCRE[8|16|32] */
967
968 #endif /* SUPPORT_UTF */
969
970 /* Tests for Unicode horizontal and vertical whitespace characters must check a
971 number of different values. Using a switch statement for this generates the
972 fastest code (no loop, no memory access), and there are several places in the
973 interpreter code where this happens. In order to ensure that all the case lists
974 remain in step, we use macros so that there is only one place where the lists
975 are defined.
976
977 These values are also required as lists in pcre_compile.c when processing \h,
978 \H, \v and \V in a character class. The lists are defined in pcre_tables.c, but
979 macros that define the values are here so that all the definitions are
980 together. The lists must be in ascending character order, terminated by
981 NOTACHAR (which is 0xffffffff).
982
983 Any changes should ensure that the various macros are kept in step with each
984 other. NOTE: The values also appear in pcre_jit_compile.c. */
985
986 /* ------ ASCII/Unicode environments ------ */
987
988 #ifndef EBCDIC
989
990 #define HSPACE_LIST \
991 CHAR_HT, CHAR_SPACE, CHAR_NBSP, \
992 0x1680, 0x180e, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, \
993 0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202f, 0x205f, 0x3000, \
994 NOTACHAR
995
996 #define HSPACE_MULTIBYTE_CASES \
997 case 0x1680: /* OGHAM SPACE MARK */ \
998 case 0x180e: /* MONGOLIAN VOWEL SEPARATOR */ \
999 case 0x2000: /* EN QUAD */ \
1000 case 0x2001: /* EM QUAD */ \
1001 case 0x2002: /* EN SPACE */ \
1002 case 0x2003: /* EM SPACE */ \
1003 case 0x2004: /* THREE-PER-EM SPACE */ \
1004 case 0x2005: /* FOUR-PER-EM SPACE */ \
1005 case 0x2006: /* SIX-PER-EM SPACE */ \
1006 case 0x2007: /* FIGURE SPACE */ \
1007 case 0x2008: /* PUNCTUATION SPACE */ \
1008 case 0x2009: /* THIN SPACE */ \
1009 case 0x200A: /* HAIR SPACE */ \
1010 case 0x202f: /* NARROW NO-BREAK SPACE */ \
1011 case 0x205f: /* MEDIUM MATHEMATICAL SPACE */ \
1012 case 0x3000 /* IDEOGRAPHIC SPACE */
1013
1014 #define HSPACE_BYTE_CASES \
1015 case CHAR_HT: \
1016 case CHAR_SPACE: \
1017 case CHAR_NBSP
1018
1019 #define HSPACE_CASES \
1020 HSPACE_BYTE_CASES: \
1021 HSPACE_MULTIBYTE_CASES
1022
1023 #define VSPACE_LIST \
1024 CHAR_LF, CHAR_VT, CHAR_FF, CHAR_CR, CHAR_NEL, 0x2028, 0x2029, NOTACHAR
1025
1026 #define VSPACE_MULTIBYTE_CASES \
1027 case 0x2028: /* LINE SEPARATOR */ \
1028 case 0x2029 /* PARAGRAPH SEPARATOR */
1029
1030 #define VSPACE_BYTE_CASES \
1031 case CHAR_LF: \
1032 case CHAR_VT: \
1033 case CHAR_FF: \
1034 case CHAR_CR: \
1035 case CHAR_NEL
1036
1037 #define VSPACE_CASES \
1038 VSPACE_BYTE_CASES: \
1039 VSPACE_MULTIBYTE_CASES
1040
1041 /* ------ EBCDIC environments ------ */
1042
1043 #else
1044 #define HSPACE_LIST CHAR_HT, CHAR_SPACE, CHAR_NBSP, NOTACHAR
1045
1046 #define HSPACE_BYTE_CASES \
1047 case CHAR_HT: \
1048 case CHAR_SPACE: \
1049 case CHAR_NBSP
1050
1051 #define HSPACE_CASES HSPACE_BYTE_CASES
1052
1053 #ifdef EBCDIC_NL25
1054 #define VSPACE_LIST \
1055 CHAR_VT, CHAR_FF, CHAR_CR, CHAR_NEL, CHAR_LF, NOTACHAR
1056 #else
1057 #define VSPACE_LIST \
1058 CHAR_VT, CHAR_FF, CHAR_CR, CHAR_LF, CHAR_NEL, NOTACHAR
1059 #endif
1060
1061 #define VSPACE_BYTE_CASES \
1062 case CHAR_LF: \
1063 case CHAR_VT: \
1064 case CHAR_FF: \
1065 case CHAR_CR: \
1066 case CHAR_NEL
1067
1068 #define VSPACE_CASES VSPACE_BYTE_CASES
1069 #endif /* EBCDIC */
1070
1071 /* ------ End of whitespace macros ------ */
1072
1073
1074
1075 /* Private flags containing information about the compiled regex. They used to
1076 live at the top end of the options word, but that got almost full, so they were
1077 moved to a 16-bit flags word - which got almost full, so now they are in a
1078 32-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as the
1079 restrictions on partial matching have been lifted. It remains for backwards
1080 compatibility. */
1081
1082 #define PCRE_MODE8 0x00000001 /* compiled in 8 bit mode */
1083 #define PCRE_MODE16 0x00000002 /* compiled in 16 bit mode */
1084 #define PCRE_MODE32 0x00000004 /* compiled in 32 bit mode */
1085 #define PCRE_FIRSTSET 0x00000010 /* first_char is set */
1086 #define PCRE_FCH_CASELESS 0x00000020 /* caseless first char */
1087 #define PCRE_REQCHSET 0x00000040 /* req_byte is set */
1088 #define PCRE_RCH_CASELESS 0x00000080 /* caseless requested char */
1089 #define PCRE_STARTLINE 0x00000100 /* start after \n for multiline */
1090 #define PCRE_NOPARTIAL 0x00000200 /* can't use partial with this regex */
1091 #define PCRE_JCHANGED 0x00000400 /* j option used in regex */
1092 #define PCRE_HASCRORLF 0x00000800 /* explicit \r or \n in pattern */
1093 #define PCRE_HASTHEN 0x00001000 /* pattern contains (*THEN) */
1094 #define PCRE_MLSET 0x00002000 /* match limit set by regex */
1095 #define PCRE_RLSET 0x00004000 /* recursion limit set by regex */
1096 #define PCRE_MATCH_EMPTY 0x00008000 /* pattern can match empty string */
1097
1098 #if defined COMPILE_PCRE8
1099 #define PCRE_MODE PCRE_MODE8
1100 #elif defined COMPILE_PCRE16
1101 #define PCRE_MODE PCRE_MODE16
1102 #elif defined COMPILE_PCRE32
1103 #define PCRE_MODE PCRE_MODE32
1104 #endif
1105 #define PCRE_MODE_MASK (PCRE_MODE8 | PCRE_MODE16 | PCRE_MODE32)
1106
1107 /* Flags for the "extra" block produced by pcre_study(). */
1108
1109 #define PCRE_STUDY_MAPPED 0x0001 /* a map of starting chars exists */
1110 #define PCRE_STUDY_MINLEN 0x0002 /* a minimum length field exists */
1111
1112 /* Masks for identifying the public options that are permitted at compile
1113 time, run time, or study time, respectively. */
1114
1115 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
1116 PCRE_NEWLINE_ANYCRLF)
1117
1118 #define PUBLIC_COMPILE_OPTIONS \
1119 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
1120 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
1121 PCRE_NO_AUTO_CAPTURE|PCRE_NO_AUTO_POSSESS| \
1122 PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
1123 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
1124 PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE|PCRE_NEVER_UTF)
1125
1126 /* If this bit is set then "extended public 'C1 Affects compile only'" option
1127 bits are present -- at least one reused non-public API bit must also be set. */
1128
1129 #define PCRE_XC1OPTIONS 0x40000000 /* extended compile-only public api */
1130
1131 #define PCRE_NOT_EXCLUDES_NL_BIT (PCRE_NOT_EXCLUDES_NL & ~PCRE_XC1OPTIONS)
1132 #define PCRE_POSIX_BASIC_ESC_BIT (PCRE_POSIX_BASIC_ESC & ~PCRE_XC1OPTIONS)
1133 #define PCRE_VERBATIM_BIT (PCRE_VERBATIM & ~PCRE_XC1OPTIONS)
1134 #define PCRE_ALLOW_EMBEDDED_NUL_BIT (PCRE_ALLOW_EMBEDDED_NUL & ~PCRE_XC1OPTIONS)
1135 #define PCRE_POSIX_EXTENDED_BIT (PCRE_POSIX_EXTENDED & ~PCRE_XC1OPTIONS)
1136
1137 /* A POSIX macro of sorts */
1138 #define PCRE_POSIX_RE_BITS \
1139 (PCRE_POSIX_BASIC_ESC_BIT|PCRE_POSIX_EXTENDED_BIT)
1140
1141 #define PUBLIC_EXTENDED_COMPILE_OPTIONS \
1142 (PCRE_NOT_EXCLUDES_NL|PCRE_POSIX_BASIC_ESC|PCRE_VERBATIM| \
1143 PCRE_ALLOW_EMBEDDED_NUL|PCRE_POSIX_EXTENDED)
1144
1145 #if (PUBLIC_COMPILE_OPTIONS & PUBLIC_EXTENDED_COMPILE_OPTIONS) != 0
1146 #error PUBLIC_EXTENDED_COMPILE_OPTIONS conflicts with PUBLIC_COMPILE_OPTIONS
1147 #endif
1148
1149 #define PUBLIC_EXEC_OPTIONS \
1150 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
1151 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
1152 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
1153
1154 #define PUBLIC_DFA_EXEC_OPTIONS \
1155 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
1156 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
1157 PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
1158 PCRE_NO_START_OPTIMIZE)
1159
1160 #define PUBLIC_STUDY_OPTIONS \
1161 (PCRE_STUDY_JIT_COMPILE|PCRE_STUDY_JIT_PARTIAL_SOFT_COMPILE| \
1162 PCRE_STUDY_JIT_PARTIAL_HARD_COMPILE|PCRE_STUDY_EXTRA_NEEDED)
1163
1164 #define PUBLIC_JIT_EXEC_OPTIONS \
1165 (PCRE_NO_UTF8_CHECK|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|\
1166 PCRE_NOTEMPTY_ATSTART|PCRE_PARTIAL_SOFT|PCRE_PARTIAL_HARD)
1167
1168 /* Magic number to provide a small check against being handed junk. */
1169
1170 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
1171
1172 /* This variable is used to detect a loaded regular expression
1173 in different endianness. */
1174
1175 #define REVERSED_MAGIC_NUMBER 0x45524350UL /* 'ERCP' */
1176
1177 /* The maximum remaining length of subject we are prepared to search for a
1178 req_byte match. */
1179
1180 #define REQ_BYTE_MAX 1000
1181
1182 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
1183 environments where these macros are defined elsewhere. Unfortunately, there
1184 is no way to do the same for the typedef. */
1185
1186 typedef int BOOL;
1187
1188 #ifndef FALSE
1189 #define FALSE 0
1190 #define TRUE 1
1191 #endif
1192
1193 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
1194 character constants like '*' because the compiler would emit their EBCDIC code,
1195 which is different from their ASCII/UTF-8 code. Instead we define macros for
1196 the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
1197 is enabled. When UTF-8 support is not enabled, the definitions use character
1198 literals. Both character and string versions of each character are needed, and
1199 there are some longer strings as well.
1200
1201 This means that, on EBCDIC platforms, the PCRE library can handle either
1202 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
1203 would need different lookups depending on whether PCRE_UTF8 was set or not.
1204 This would make it impossible to use characters in switch/case statements,
1205 which would reduce performance. For a theoretical use (which nobody has asked
1206 for) in a minority area (EBCDIC platforms), this is not sensible. Any
1207 application that did need both could compile two versions of the library, using
1208 macros to give the functions distinct names. */
1209
1210 #ifndef SUPPORT_UTF
1211
1212 /* UTF-8 support is not enabled; use the platform-dependent character literals
1213 so that PCRE works in both ASCII and EBCDIC environments, but only in non-UTF
1214 mode. Newline characters are problematic in EBCDIC. Though it has CR and LF
1215 characters, a common practice has been to use its NL (0x15) character as the
1216 line terminator in C-like processing environments. However, sometimes the LF
1217 (0x25) character is used instead, according to this Unicode document:
1218
1219 http://unicode.org/standard/reports/tr13/tr13-5.html
1220
1221 PCRE defaults EBCDIC NL to 0x15, but has a build-time option to select 0x25
1222 instead. Whichever is *not* chosen is defined as NEL.
1223
1224 In both ASCII and EBCDIC environments, CHAR_NL and CHAR_LF are synonyms for the
1225 same code point. */
1226
1227 #ifdef EBCDIC
1228
1229 #ifndef EBCDIC_NL25
1230 #define CHAR_NL '\x15'
1231 #define CHAR_NEL '\x25'
1232 #define STR_NL "\x15"
1233 #define STR_NEL "\x25"
1234 #else
1235 #define CHAR_NL '\x25'
1236 #define CHAR_NEL '\x15'
1237 #define STR_NL "\x25"
1238 #define STR_NEL "\x15"
1239 #endif
1240
1241 #define CHAR_LF CHAR_NL
1242 #define STR_LF STR_NL
1243
1244 #define CHAR_ESC '\047'
1245 #define CHAR_DEL '\007'
1246 #define CHAR_NBSP '\x41'
1247 #define STR_ESC "\047"
1248 #define STR_DEL "\007"
1249
1250 #else /* Not EBCDIC */
1251
1252 /* In ASCII/Unicode, linefeed is '\n' and we equate this to NL for
1253 compatibility. NEL is the Unicode newline character; make sure it is
1254 a positive value. */
1255
1256 #define CHAR_LF '\n'
1257 #define CHAR_NL CHAR_LF
1258 #define CHAR_NEL ((unsigned char)'\x85')
1259 #define CHAR_ESC '\033'
1260 #define CHAR_DEL '\177'
1261 #define CHAR_NBSP ((unsigned char)'\xa0')
1262
1263 #define STR_LF "\n"
1264 #define STR_NL STR_LF
1265 #define STR_NEL "\x85"
1266 #define STR_ESC "\033"
1267 #define STR_DEL "\177"
1268
1269 #endif /* EBCDIC */
1270
1271 /* The remaining definitions work in both environments. */
1272
1273 #define CHAR_NULL '\0'
1274 #define CHAR_HT '\t'
1275 #define CHAR_VT '\v'
1276 #define CHAR_FF '\f'
1277 #define CHAR_CR '\r'
1278 #define CHAR_BS '\b'
1279 #define CHAR_BEL '\a'
1280
1281 #define CHAR_SPACE ' '
1282 #define CHAR_EXCLAMATION_MARK '!'
1283 #define CHAR_QUOTATION_MARK '"'
1284 #define CHAR_NUMBER_SIGN '#'
1285 #define CHAR_DOLLAR_SIGN '$'
1286 #define CHAR_PERCENT_SIGN '%'
1287 #define CHAR_AMPERSAND '&'
1288 #define CHAR_APOSTROPHE '\''
1289 #define CHAR_LEFT_PARENTHESIS '('
1290 #define CHAR_RIGHT_PARENTHESIS ')'
1291 #define CHAR_ASTERISK '*'
1292 #define CHAR_PLUS '+'
1293 #define CHAR_COMMA ','
1294 #define CHAR_MINUS '-'
1295 #define CHAR_DOT '.'
1296 #define CHAR_SLASH '/'
1297 #define CHAR_0 '0'
1298 #define CHAR_1 '1'
1299 #define CHAR_2 '2'
1300 #define CHAR_3 '3'
1301 #define CHAR_4 '4'
1302 #define CHAR_5 '5'
1303 #define CHAR_6 '6'
1304 #define CHAR_7 '7'
1305 #define CHAR_8 '8'
1306 #define CHAR_9 '9'
1307 #define CHAR_COLON ':'
1308 #define CHAR_SEMICOLON ';'
1309 #define CHAR_LESS_THAN_SIGN '<'
1310 #define CHAR_EQUALS_SIGN '='
1311 #define CHAR_GREATER_THAN_SIGN '>'
1312 #define CHAR_QUESTION_MARK '?'
1313 #define CHAR_COMMERCIAL_AT '@'
1314 #define CHAR_A 'A'
1315 #define CHAR_B 'B'
1316 #define CHAR_C 'C'
1317 #define CHAR_D 'D'
1318 #define CHAR_E 'E'
1319 #define CHAR_F 'F'
1320 #define CHAR_G 'G'
1321 #define CHAR_H 'H'
1322 #define CHAR_I 'I'
1323 #define CHAR_J 'J'
1324 #define CHAR_K 'K'
1325 #define CHAR_L 'L'
1326 #define CHAR_M 'M'
1327 #define CHAR_N 'N'
1328 #define CHAR_O 'O'
1329 #define CHAR_P 'P'
1330 #define CHAR_Q 'Q'
1331 #define CHAR_R 'R'
1332 #define CHAR_S 'S'
1333 #define CHAR_T 'T'
1334 #define CHAR_U 'U'
1335 #define CHAR_V 'V'
1336 #define CHAR_W 'W'
1337 #define CHAR_X 'X'
1338 #define CHAR_Y 'Y'
1339 #define CHAR_Z 'Z'
1340 #define CHAR_LEFT_SQUARE_BRACKET '['
1341 #define CHAR_BACKSLASH '\\'
1342 #define CHAR_RIGHT_SQUARE_BRACKET ']'
1343 #define CHAR_CIRCUMFLEX_ACCENT '^'
1344 #define CHAR_UNDERSCORE '_'
1345 #define CHAR_GRAVE_ACCENT '`'
1346 #define CHAR_a 'a'
1347 #define CHAR_b 'b'
1348 #define CHAR_c 'c'
1349 #define CHAR_d 'd'
1350 #define CHAR_e 'e'
1351 #define CHAR_f 'f'
1352 #define CHAR_g 'g'
1353 #define CHAR_h 'h'
1354 #define CHAR_i 'i'
1355 #define CHAR_j 'j'
1356 #define CHAR_k 'k'
1357 #define CHAR_l 'l'
1358 #define CHAR_m 'm'
1359 #define CHAR_n 'n'
1360 #define CHAR_o 'o'
1361 #define CHAR_p 'p'
1362 #define CHAR_q 'q'
1363 #define CHAR_r 'r'
1364 #define CHAR_s 's'
1365 #define CHAR_t 't'
1366 #define CHAR_u 'u'
1367 #define CHAR_v 'v'
1368 #define CHAR_w 'w'
1369 #define CHAR_x 'x'
1370 #define CHAR_y 'y'
1371 #define CHAR_z 'z'
1372 #define CHAR_LEFT_CURLY_BRACKET '{'
1373 #define CHAR_VERTICAL_LINE '|'
1374 #define CHAR_RIGHT_CURLY_BRACKET '}'
1375 #define CHAR_TILDE '~'
1376
1377 #define STR_HT "\t"
1378 #define STR_VT "\v"
1379 #define STR_FF "\f"
1380 #define STR_CR "\r"
1381 #define STR_BS "\b"
1382 #define STR_BEL "\a"
1383
1384 #define STR_SPACE " "
1385 #define STR_EXCLAMATION_MARK "!"
1386 #define STR_QUOTATION_MARK "\""
1387 #define STR_NUMBER_SIGN "#"
1388 #define STR_DOLLAR_SIGN "$"
1389 #define STR_PERCENT_SIGN "%"
1390 #define STR_AMPERSAND "&"
1391 #define STR_APOSTROPHE "'"
1392 #define STR_LEFT_PARENTHESIS "("
1393 #define STR_RIGHT_PARENTHESIS ")"
1394 #define STR_ASTERISK "*"
1395 #define STR_PLUS "+"
1396 #define STR_COMMA ","
1397 #define STR_MINUS "-"
1398 #define STR_DOT "."
1399 #define STR_SLASH "/"
1400 #define STR_0 "0"
1401 #define STR_1 "1"
1402 #define STR_2 "2"
1403 #define STR_3 "3"
1404 #define STR_4 "4"
1405 #define STR_5 "5"
1406 #define STR_6 "6"
1407 #define STR_7 "7"
1408 #define STR_8 "8"
1409 #define STR_9 "9"
1410 #define STR_COLON ":"
1411 #define STR_SEMICOLON ";"
1412 #define STR_LESS_THAN_SIGN "<"
1413 #define STR_EQUALS_SIGN "="
1414 #define STR_GREATER_THAN_SIGN ">"
1415 #define STR_QUESTION_MARK "?"
1416 #define STR_COMMERCIAL_AT "@"
1417 #define STR_A "A"
1418 #define STR_B "B"
1419 #define STR_C "C"
1420 #define STR_D "D"
1421 #define STR_E "E"
1422 #define STR_F "F"
1423 #define STR_G "G"
1424 #define STR_H "H"
1425 #define STR_I "I"
1426 #define STR_J "J"
1427 #define STR_K "K"
1428 #define STR_L "L"
1429 #define STR_M "M"
1430 #define STR_N "N"
1431 #define STR_O "O"
1432 #define STR_P "P"
1433 #define STR_Q "Q"
1434 #define STR_R "R"
1435 #define STR_S "S"
1436 #define STR_T "T"
1437 #define STR_U "U"
1438 #define STR_V "V"
1439 #define STR_W "W"
1440 #define STR_X "X"
1441 #define STR_Y "Y"
1442 #define STR_Z "Z"
1443 #define STR_LEFT_SQUARE_BRACKET "["
1444 #define STR_BACKSLASH "\\"
1445 #define STR_RIGHT_SQUARE_BRACKET "]"
1446 #define STR_CIRCUMFLEX_ACCENT "^"
1447 #define STR_UNDERSCORE "_"
1448 #define STR_GRAVE_ACCENT "`"
1449 #define STR_a "a"
1450 #define STR_b "b"
1451 #define STR_c "c"
1452 #define STR_d "d"
1453 #define STR_e "e"
1454 #define STR_f "f"
1455 #define STR_g "g"
1456 #define STR_h "h"
1457 #define STR_i "i"
1458 #define STR_j "j"
1459 #define STR_k "k"
1460 #define STR_l "l"
1461 #define STR_m "m"
1462 #define STR_n "n"
1463 #define STR_o "o"
1464 #define STR_p "p"
1465 #define STR_q "q"
1466 #define STR_r "r"
1467 #define STR_s "s"
1468 #define STR_t "t"
1469 #define STR_u "u"
1470 #define STR_v "v"
1471 #define STR_w "w"
1472 #define STR_x "x"
1473 #define STR_y "y"
1474 #define STR_z "z"
1475 #define STR_LEFT_CURLY_BRACKET "{"
1476 #define STR_VERTICAL_LINE "|"
1477 #define STR_RIGHT_CURLY_BRACKET "}"
1478 #define STR_TILDE "~"
1479
1480 #define STRING_ACCEPT0 "ACCEPT\0"
1481 #define STRING_COMMIT0 "COMMIT\0"
1482 #define STRING_F0 "F\0"
1483 #define STRING_FAIL0 "FAIL\0"
1484 #define STRING_MARK0 "MARK\0"
1485 #define STRING_PRUNE0 "PRUNE\0"
1486 #define STRING_SKIP0 "SKIP\0"
1487 #define STRING_THEN "THEN"
1488
1489 #define STRING_alpha0 "alpha\0"
1490 #define STRING_lower0 "lower\0"
1491 #define STRING_upper0 "upper\0"
1492 #define STRING_alnum0 "alnum\0"
1493 #define STRING_ascii0 "ascii\0"
1494 #define STRING_blank0 "blank\0"
1495 #define STRING_cntrl0 "cntrl\0"
1496 #define STRING_digit0 "digit\0"
1497 #define STRING_graph0 "graph\0"
1498 #define STRING_print0 "print\0"
1499 #define STRING_punct0 "punct\0"
1500 #define STRING_space0 "space\0"
1501 #define STRING_word0 "word\0"
1502 #define STRING_xdigit "xdigit"
1503
1504 #define STRING_DEFINE "DEFINE"
1505 #define STRING_WEIRD_STARTWORD "[:<:]]"
1506 #define STRING_WEIRD_ENDWORD "[:>:]]"
1507
1508 #define STRING_CR_RIGHTPAR "CR)"
1509 #define STRING_LF_RIGHTPAR "LF)"
1510 #define STRING_CRLF_RIGHTPAR "CRLF)"
1511 #define STRING_ANY_RIGHTPAR "ANY)"
1512 #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
1513 #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
1514 #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
1515 #define STRING_UTF8_RIGHTPAR "UTF8)"
1516 #define STRING_UTF16_RIGHTPAR "UTF16)"
1517 #define STRING_UTF32_RIGHTPAR "UTF32)"
1518 #define STRING_UTF_RIGHTPAR "UTF)"
1519 #define STRING_UCP_RIGHTPAR "UCP)"
1520 #define STRING_NO_AUTO_POSSESS_RIGHTPAR "NO_AUTO_POSSESS)"
1521 #define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)"
1522 #define STRING_LIMIT_MATCH_EQ "LIMIT_MATCH="
1523 #define STRING_LIMIT_RECURSION_EQ "LIMIT_RECURSION="
1524
1525 #else /* SUPPORT_UTF */
1526
1527 /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
1528 works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
1529 only. */
1530
1531 #define CHAR_HT '\011'
1532 #define CHAR_VT '\013'
1533 #define CHAR_FF '\014'
1534 #define CHAR_CR '\015'
1535 #define CHAR_LF '\012'
1536 #define CHAR_NL CHAR_LF
1537 #define CHAR_NEL ((unsigned char)'\x85')
1538 #define CHAR_BS '\010'
1539 #define CHAR_BEL '\007'
1540 #define CHAR_ESC '\033'
1541 #define CHAR_DEL '\177'
1542
1543 #define CHAR_NULL '\0'
1544 #define CHAR_SPACE '\040'
1545 #define CHAR_EXCLAMATION_MARK '\041'
1546 #define CHAR_QUOTATION_MARK '\042'
1547 #define CHAR_NUMBER_SIGN '\043'
1548 #define CHAR_DOLLAR_SIGN '\044'
1549 #define CHAR_PERCENT_SIGN '\045'
1550 #define CHAR_AMPERSAND '\046'
1551 #define CHAR_APOSTROPHE '\047'
1552 #define CHAR_LEFT_PARENTHESIS '\050'
1553 #define CHAR_RIGHT_PARENTHESIS '\051'
1554 #define CHAR_ASTERISK '\052'
1555 #define CHAR_PLUS '\053'
1556 #define CHAR_COMMA '\054'
1557 #define CHAR_MINUS '\055'
1558 #define CHAR_DOT '\056'
1559 #define CHAR_SLASH '\057'
1560 #define CHAR_0 '\060'
1561 #define CHAR_1 '\061'
1562 #define CHAR_2 '\062'
1563 #define CHAR_3 '\063'
1564 #define CHAR_4 '\064'
1565 #define CHAR_5 '\065'
1566 #define CHAR_6 '\066'
1567 #define CHAR_7 '\067'
1568 #define CHAR_8 '\070'
1569 #define CHAR_9 '\071'
1570 #define CHAR_COLON '\072'
1571 #define CHAR_SEMICOLON '\073'
1572 #define CHAR_LESS_THAN_SIGN '\074'
1573 #define CHAR_EQUALS_SIGN '\075'
1574 #define CHAR_GREATER_THAN_SIGN '\076'
1575 #define CHAR_QUESTION_MARK '\077'
1576 #define CHAR_COMMERCIAL_AT '\100'
1577 #define CHAR_A '\101'
1578 #define CHAR_B '\102'
1579 #define CHAR_C '\103'
1580 #define CHAR_D '\104'
1581 #define CHAR_E '\105'
1582 #define CHAR_F '\106'
1583 #define CHAR_G '\107'
1584 #define CHAR_H '\110'
1585 #define CHAR_I '\111'
1586 #define CHAR_J '\112'
1587 #define CHAR_K '\113'
1588 #define CHAR_L '\114'
1589 #define CHAR_M '\115'
1590 #define CHAR_N '\116'
1591 #define CHAR_O '\117'
1592 #define CHAR_P '\120'
1593 #define CHAR_Q '\121'
1594 #define CHAR_R '\122'
1595 #define CHAR_S '\123'
1596 #define CHAR_T '\124'
1597 #define CHAR_U '\125'
1598 #define CHAR_V '\126'
1599 #define CHAR_W '\127'
1600 #define CHAR_X '\130'
1601 #define CHAR_Y '\131'
1602 #define CHAR_Z '\132'
1603 #define CHAR_LEFT_SQUARE_BRACKET '\133'
1604 #define CHAR_BACKSLASH '\134'
1605 #define CHAR_RIGHT_SQUARE_BRACKET '\135'
1606 #define CHAR_CIRCUMFLEX_ACCENT '\136'
1607 #define CHAR_UNDERSCORE '\137'
1608 #define CHAR_GRAVE_ACCENT '\140'
1609 #define CHAR_a '\141'
1610 #define CHAR_b '\142'
1611 #define CHAR_c '\143'
1612 #define CHAR_d '\144'
1613 #define CHAR_e '\145'
1614 #define CHAR_f '\146'
1615 #define CHAR_g '\147'
1616 #define CHAR_h '\150'
1617 #define CHAR_i '\151'
1618 #define CHAR_j '\152'
1619 #define CHAR_k '\153'
1620 #define CHAR_l '\154'
1621 #define CHAR_m '\155'
1622 #define CHAR_n '\156'
1623 #define CHAR_o '\157'
1624 #define CHAR_p '\160'
1625 #define CHAR_q '\161'
1626 #define CHAR_r '\162'
1627 #define CHAR_s '\163'
1628 #define CHAR_t '\164'
1629 #define CHAR_u '\165'
1630 #define CHAR_v '\166'
1631 #define CHAR_w '\167'
1632 #define CHAR_x '\170'
1633 #define CHAR_y '\171'
1634 #define CHAR_z '\172'
1635 #define CHAR_LEFT_CURLY_BRACKET '\173'
1636 #define CHAR_VERTICAL_LINE '\174'
1637 #define CHAR_RIGHT_CURLY_BRACKET '\175'
1638 #define CHAR_TILDE '\176'
1639 #define CHAR_NBSP ((unsigned char)'\xa0')
1640
1641 #define STR_HT "\011"
1642 #define STR_VT "\013"
1643 #define STR_FF "\014"
1644 #define STR_CR "\015"
1645 #define STR_NL "\012"
1646 #define STR_BS "\010"
1647 #define STR_BEL "\007"
1648 #define STR_ESC "\033"
1649 #define STR_DEL "\177"
1650
1651 #define STR_SPACE "\040"
1652 #define STR_EXCLAMATION_MARK "\041"
1653 #define STR_QUOTATION_MARK "\042"
1654 #define STR_NUMBER_SIGN "\043"
1655 #define STR_DOLLAR_SIGN "\044"
1656 #define STR_PERCENT_SIGN "\045"
1657 #define STR_AMPERSAND "\046"
1658 #define STR_APOSTROPHE "\047"
1659 #define STR_LEFT_PARENTHESIS "\050"
1660 #define STR_RIGHT_PARENTHESIS "\051"
1661 #define STR_ASTERISK "\052"
1662 #define STR_PLUS "\053"
1663 #define STR_COMMA "\054"
1664 #define STR_MINUS "\055"
1665 #define STR_DOT "\056"
1666 #define STR_SLASH "\057"
1667 #define STR_0 "\060"
1668 #define STR_1 "\061"
1669 #define STR_2 "\062"
1670 #define STR_3 "\063"
1671 #define STR_4 "\064"
1672 #define STR_5 "\065"
1673 #define STR_6 "\066"
1674 #define STR_7 "\067"
1675 #define STR_8 "\070"
1676 #define STR_9 "\071"
1677 #define STR_COLON "\072"
1678 #define STR_SEMICOLON "\073"
1679 #define STR_LESS_THAN_SIGN "\074"
1680 #define STR_EQUALS_SIGN "\075"
1681 #define STR_GREATER_THAN_SIGN "\076"
1682 #define STR_QUESTION_MARK "\077"
1683 #define STR_COMMERCIAL_AT "\100"
1684 #define STR_A "\101"
1685 #define STR_B "\102"
1686 #define STR_C "\103"
1687 #define STR_D "\104"
1688 #define STR_E "\105"
1689 #define STR_F "\106"
1690 #define STR_G "\107"
1691 #define STR_H "\110"
1692 #define STR_I "\111"
1693 #define STR_J "\112"
1694 #define STR_K "\113"
1695 #define STR_L "\114"
1696 #define STR_M "\115"
1697 #define STR_N "\116"
1698 #define STR_O "\117"
1699 #define STR_P "\120"
1700 #define STR_Q "\121"
1701 #define STR_R "\122"
1702 #define STR_S "\123"
1703 #define STR_T "\124"
1704 #define STR_U "\125"
1705 #define STR_V "\126"
1706 #define STR_W "\127"
1707 #define STR_X "\130"
1708 #define STR_Y "\131"
1709 #define STR_Z "\132"
1710 #define STR_LEFT_SQUARE_BRACKET "\133"
1711 #define STR_BACKSLASH "\134"
1712 #define STR_RIGHT_SQUARE_BRACKET "\135"
1713 #define STR_CIRCUMFLEX_ACCENT "\136"
1714 #define STR_UNDERSCORE "\137"
1715 #define STR_GRAVE_ACCENT "\140"
1716 #define STR_a "\141"
1717 #define STR_b "\142"
1718 #define STR_c "\143"
1719 #define STR_d "\144"
1720 #define STR_e "\145"
1721 #define STR_f "\146"
1722 #define STR_g "\147"
1723 #define STR_h "\150"
1724 #define STR_i "\151"
1725 #define STR_j "\152"
1726 #define STR_k "\153"
1727 #define STR_l "\154"
1728 #define STR_m "\155"
1729 #define STR_n "\156"
1730 #define STR_o "\157"
1731 #define STR_p "\160"
1732 #define STR_q "\161"
1733 #define STR_r "\162"
1734 #define STR_s "\163"
1735 #define STR_t "\164"
1736 #define STR_u "\165"
1737 #define STR_v "\166"
1738 #define STR_w "\167"
1739 #define STR_x "\170"
1740 #define STR_y "\171"
1741 #define STR_z "\172"
1742 #define STR_LEFT_CURLY_BRACKET "\173"
1743 #define STR_VERTICAL_LINE "\174"
1744 #define STR_RIGHT_CURLY_BRACKET "\175"
1745 #define STR_TILDE "\176"
1746
1747 #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1748 #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1749 #define STRING_F0 STR_F "\0"
1750 #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
1751 #define STRING_MARK0 STR_M STR_A STR_R STR_K "\0"
1752 #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
1753 #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
1754 #define STRING_THEN STR_T STR_H STR_E STR_N
1755
1756 #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
1757 #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
1758 #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
1759 #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
1760 #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
1761 #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
1762 #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
1763 #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
1764 #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
1765 #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
1766 #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
1767 #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
1768 #define STRING_word0 STR_w STR_o STR_r STR_d "\0"
1769 #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
1770
1771 #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
1772 #define STRING_WEIRD_STARTWORD STR_LEFT_SQUARE_BRACKET STR_COLON STR_LESS_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
1773 #define STRING_WEIRD_ENDWORD STR_LEFT_SQUARE_BRACKET STR_COLON STR_GREATER_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
1774
1775 #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
1776 #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
1777 #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1778 #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1779 #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1780 #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
1781 #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
1782 #define STRING_UTF8_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1783 #define STRING_UTF16_RIGHTPAR STR_U STR_T STR_F STR_1 STR_6 STR_RIGHT_PARENTHESIS
1784 #define STRING_UTF32_RIGHTPAR STR_U STR_T STR_F STR_3 STR_2 STR_RIGHT_PARENTHESIS
1785 #define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_RIGHT_PARENTHESIS
1786 #define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
1787 #define STRING_NO_AUTO_POSSESS_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_A STR_U STR_T STR_O STR_UNDERSCORE STR_P STR_O STR_S STR_S STR_E STR_S STR_S STR_RIGHT_PARENTHESIS
1788 #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
1789 #define STRING_LIMIT_MATCH_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_M STR_A STR_T STR_C STR_H STR_EQUALS_SIGN
1790 #define STRING_LIMIT_RECURSION_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_R STR_E STR_C STR_U STR_R STR_S STR_I STR_O STR_N STR_EQUALS_SIGN
1791
1792 #endif /* SUPPORT_UTF */
1793
1794 /* Escape items that are just an encoding of a particular data value. */
1795
1796 #ifndef ESC_a
1797 #define ESC_a CHAR_BEL
1798 #endif
1799
1800 #ifndef ESC_e
1801 #define ESC_e CHAR_ESC
1802 #endif
1803
1804 #ifndef ESC_f
1805 #define ESC_f CHAR_FF
1806 #endif
1807
1808 #ifndef ESC_n
1809 #define ESC_n CHAR_LF
1810 #endif
1811
1812 #ifndef ESC_r
1813 #define ESC_r CHAR_CR
1814 #endif
1815
1816 /* We can't officially use ESC_t because it is a POSIX reserved identifier
1817 (presumably because of all the others like size_t). */
1818
1819 #ifndef ESC_tee
1820 #define ESC_tee CHAR_HT
1821 #endif
1822
1823 /* Codes for different types of Unicode property */
1824
1825 #define PT_ANY 0 /* Any property - matches all chars */
1826 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
1827 #define PT_GC 2 /* Specified general characteristic (e.g. L) */
1828 #define PT_PC 3 /* Specified particular characteristic (e.g. Lu) */
1829 #define PT_SC 4 /* Script (e.g. Han) */
1830 #define PT_ALNUM 5 /* Alphanumeric - the union of L and N */
1831 #define PT_SPACE 6 /* Perl space - Z plus 9,10,12,13 */
1832 #define PT_PXSPACE 7 /* POSIX space - Z plus 9,10,11,12,13 */
1833 #define PT_WORD 8 /* Word - L plus N plus underscore */
1834 #define PT_CLIST 9 /* Pseudo-property: match character list */
1835 #define PT_UCNC 10 /* Universal Character nameable character */
1836 #define PT_TABSIZE 11 /* Size of square table for autopossessify tests */
1837
1838 /* The following special properties are used only in XCLASS items, when POSIX
1839 classes are specified and PCRE_UCP is set - in other words, for Unicode
1840 handling of these classes. They are not available via the \p or \P escapes like
1841 those in the above list, and so they do not take part in the autopossessifying
1842 table. */
1843
1844 #define PT_PXGRAPH 11 /* [:graph:] - characters that mark the paper */
1845 #define PT_PXPRINT 12 /* [:print:] - [:graph:] plus non-control spaces */
1846 #define PT_PXPUNCT 13 /* [:punct:] - punctuation characters */
1847
1848 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1849 contain characters with values greater than 255. */
1850
1851 #define XCL_NOT 0x01 /* Flag: this is a negative class */
1852 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
1853 #define XCL_HASPROP 0x04 /* Flag: property checks are present. */
1854
1855 #define XCL_END 0 /* Marks end of individual items */
1856 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
1857 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
1858 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
1859 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
1860
1861 /* These are escaped items that aren't just an encoding of a particular data
1862 value such as \n. They must have non-zero values, as check_escape() returns 0
1863 for a data character. Also, they must appear in the same order as in the
1864 opcode definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
1865 corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1866 used for [^] in JavaScript compatibility mode, and for \C in non-utf mode. In
1867 non-DOTALL mode, "." behaves like \N.
1868
1869 The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
1870 when PCRE_UCP is set and replacement of \d etc by \p sequences is required.
1871 They must be contiguous, and remain in order so that the replacements can be
1872 looked up from a table.
1873
1874 Negative numbers are used to encode a backreference (\1, \2, \3, etc.) in
1875 check_escape(). There are two tests in the code for an escape
1876 greater than ESC_b and less than ESC_Z to detect the types that may be
1877 repeated. These are the types that consume characters. If any new escapes are
1878 put in between that don't consume a character, that code will have to change.
1879 */
1880
1881 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1882 ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1883 ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
1884 ESC_E, ESC_Q, ESC_g, ESC_k,
1885 ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu };
1886
1887
1888 /********************** Opcode definitions ******************/
1889
1890 /****** NOTE NOTE NOTE ******
1891
1892 Starting from 1 (i.e. after OP_END), the values up to OP_EOD must correspond in
1893 order to the list of escapes immediately above. Furthermore, values up to
1894 OP_DOLLM must not be changed without adjusting the table called autoposstab in
1895 pcre_compile.c
1896
1897 Whenever this list is updated, the two macro definitions that follow must be
1898 updated to match. The possessification table called "opcode_possessify" in
1899 pcre_compile.c must also be updated, and also the tables called "coptable"
1900 and "poptable" in pcre_dfa_exec.c.
1901
1902 ****** NOTE NOTE NOTE ******/
1903
1904
1905 /* The values between FIRST_AUTOTAB_OP and LAST_AUTOTAB_RIGHT_OP, inclusive,
1906 are used in a table for deciding whether a repeated character type can be
1907 auto-possessified. */
1908
1909 #define FIRST_AUTOTAB_OP OP_NOT_DIGIT
1910 #define LAST_AUTOTAB_LEFT_OP OP_EXTUNI
1911 #define LAST_AUTOTAB_RIGHT_OP OP_DOLLM
1912
1913 enum {
1914 OP_END, /* 0 End of pattern */
1915
1916 /* Values corresponding to backslashed metacharacters */
1917
1918 OP_SOD, /* 1 Start of data: \A */
1919 OP_SOM, /* 2 Start of match (subject + offset): \G */
1920 OP_SET_SOM, /* 3 Set start of match (\K) */
1921 OP_NOT_WORD_BOUNDARY, /* 4 \B */
1922 OP_WORD_BOUNDARY, /* 5 \b */
1923 OP_NOT_DIGIT, /* 6 \D */
1924 OP_DIGIT, /* 7 \d */
1925 OP_NOT_WHITESPACE, /* 8 \S */
1926 OP_WHITESPACE, /* 9 \s */
1927 OP_NOT_WORDCHAR, /* 10 \W */
1928 OP_WORDCHAR, /* 11 \w */
1929
1930 OP_ANY, /* 12 Match any character except newline (\N) */
1931 OP_ALLANY, /* 13 Match any character */
1932 OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1933 OP_NOTPROP, /* 15 \P (not Unicode property) */
1934 OP_PROP, /* 16 \p (Unicode property) */
1935 OP_ANYNL, /* 17 \R (any newline sequence) */
1936 OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
1937 OP_HSPACE, /* 19 \h (horizontal whitespace) */
1938 OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
1939 OP_VSPACE, /* 21 \v (vertical whitespace) */
1940 OP_EXTUNI, /* 22 \X (extended Unicode sequence */
1941 OP_EODN, /* 23 End of data or \n at end of data (\Z) */
1942 OP_EOD, /* 24 End of data (\z) */
1943
1944 /* Line end assertions */
1945
1946 OP_DOLL, /* 25 End of line - not multiline */
1947 OP_DOLLM, /* 26 End of line - multiline */
1948 OP_CIRC, /* 27 Start of line - not multiline */
1949 OP_CIRCM, /* 28 Start of line - multiline */
1950
1951 /* Single characters; caseful must precede the caseless ones */
1952
1953 OP_CHAR, /* 29 Match one character, casefully */
1954 OP_CHARI, /* 30 Match one character, caselessly */
1955 OP_NOT, /* 31 Match one character, not the given one, casefully */
1956 OP_NOTI, /* 32 Match one character, not the given one, caselessly */
1957
1958 /* The following sets of 13 opcodes must always be kept in step because
1959 the offset from the first one is used to generate the others. */
1960
1961 /* Repeated characters; caseful must precede the caseless ones */
1962
1963 OP_STAR, /* 33 The maximizing and minimizing versions of */
1964 OP_MINSTAR, /* 34 these six opcodes must come in pairs, with */
1965 OP_PLUS, /* 35 the minimizing one second. */
1966 OP_MINPLUS, /* 36 */
1967 OP_QUERY, /* 37 */
1968 OP_MINQUERY, /* 38 */
1969
1970 OP_UPTO, /* 39 From 0 to n matches of one character, caseful*/
1971 OP_MINUPTO, /* 40 */
1972 OP_EXACT, /* 41 Exactly n matches */
1973
1974 OP_POSSTAR, /* 42 Possessified star, caseful */
1975 OP_POSPLUS, /* 43 Possessified plus, caseful */
1976 OP_POSQUERY, /* 44 Posesssified query, caseful */
1977 OP_POSUPTO, /* 45 Possessified upto, caseful */
1978
1979 /* Repeated characters; caseless must follow the caseful ones */
1980
1981 OP_STARI, /* 46 */
1982 OP_MINSTARI, /* 47 */
1983 OP_PLUSI, /* 48 */
1984 OP_MINPLUSI, /* 49 */
1985 OP_QUERYI, /* 50 */
1986 OP_MINQUERYI, /* 51 */
1987
1988 OP_UPTOI, /* 52 From 0 to n matches of one character, caseless */
1989 OP_MINUPTOI, /* 53 */
1990 OP_EXACTI, /* 54 */
1991
1992 OP_POSSTARI, /* 55 Possessified star, caseless */
1993 OP_POSPLUSI, /* 56 Possessified plus, caseless */
1994 OP_POSQUERYI, /* 57 Posesssified query, caseless */
1995 OP_POSUPTOI, /* 58 Possessified upto, caseless */
1996
1997 /* The negated ones must follow the non-negated ones, and match them */
1998 /* Negated repeated character, caseful; must precede the caseless ones */
1999
2000 OP_NOTSTAR, /* 59 The maximizing and minimizing versions of */
2001 OP_NOTMINSTAR, /* 60 these six opcodes must come in pairs, with */
2002 OP_NOTPLUS, /* 61 the minimizing one second. They must be in */
2003 OP_NOTMINPLUS, /* 62 exactly the same order as those above. */
2004 OP_NOTQUERY, /* 63 */
2005 OP_NOTMINQUERY, /* 64 */
2006
2007 OP_NOTUPTO, /* 65 From 0 to n matches, caseful */
2008 OP_NOTMINUPTO, /* 66 */
2009 OP_NOTEXACT, /* 67 Exactly n matches */
2010
2011 OP_NOTPOSSTAR, /* 68 Possessified versions, caseful */
2012 OP_NOTPOSPLUS, /* 69 */
2013 OP_NOTPOSQUERY, /* 70 */
2014 OP_NOTPOSUPTO, /* 71 */
2015
2016 /* Negated repeated character, caseless; must follow the caseful ones */
2017
2018 OP_NOTSTARI, /* 72 */
2019 OP_NOTMINSTARI, /* 73 */
2020 OP_NOTPLUSI, /* 74 */
2021 OP_NOTMINPLUSI, /* 75 */
2022 OP_NOTQUERYI, /* 76 */
2023 OP_NOTMINQUERYI, /* 77 */
2024
2025 OP_NOTUPTOI, /* 78 From 0 to n matches, caseless */
2026 OP_NOTMINUPTOI, /* 79 */
2027 OP_NOTEXACTI, /* 80 Exactly n matches */
2028
2029 OP_NOTPOSSTARI, /* 81 Possessified versions, caseless */
2030 OP_NOTPOSPLUSI, /* 82 */
2031 OP_NOTPOSQUERYI, /* 83 */
2032 OP_NOTPOSUPTOI, /* 84 */
2033
2034 /* Character types */
2035
2036 OP_TYPESTAR, /* 85 The maximizing and minimizing versions of */
2037 OP_TYPEMINSTAR, /* 86 these six opcodes must come in pairs, with */
2038 OP_TYPEPLUS, /* 87 the minimizing one second. These codes must */
2039 OP_TYPEMINPLUS, /* 88 be in exactly the same order as those above. */
2040 OP_TYPEQUERY, /* 89 */
2041 OP_TYPEMINQUERY, /* 90 */
2042
2043 OP_TYPEUPTO, /* 91 From 0 to n matches */
2044 OP_TYPEMINUPTO, /* 92 */
2045 OP_TYPEEXACT, /* 93 Exactly n matches */
2046
2047 OP_TYPEPOSSTAR, /* 94 Possessified versions */
2048 OP_TYPEPOSPLUS, /* 95 */
2049 OP_TYPEPOSQUERY, /* 96 */
2050 OP_TYPEPOSUPTO, /* 97 */
2051
2052 /* These are used for character classes and back references; only the
2053 first six are the same as the sets above. */
2054
2055 OP_CRSTAR, /* 98 The maximizing and minimizing versions of */
2056 OP_CRMINSTAR, /* 99 all these opcodes must come in pairs, with */
2057 OP_CRPLUS, /* 100 the minimizing one second. These codes must */
2058 OP_CRMINPLUS, /* 101 be in exactly the same order as those above. */
2059 OP_CRQUERY, /* 102 */
2060 OP_CRMINQUERY, /* 103 */
2061
2062 OP_CRRANGE, /* 104 These are different to the three sets above. */
2063 OP_CRMINRANGE, /* 105 */
2064
2065 OP_CRPOSSTAR, /* 106 Possessified versions */
2066 OP_CRPOSPLUS, /* 107 */
2067 OP_CRPOSQUERY, /* 108 */
2068 OP_CRPOSRANGE, /* 109 */
2069
2070 /* End of quantifier opcodes */
2071
2072 OP_CLASS, /* 110 Match a character class, chars < 256 only */
2073 OP_NCLASS, /* 111 Same, but the bitmap was created from a negative
2074 class - the difference is relevant only when a
2075 character > 255 is encountered. */
2076 OP_XCLASS, /* 112 Extended class for handling > 255 chars within the
2077 class. This does both positive and negative. */
2078 OP_REF, /* 113 Match a back reference, casefully */
2079 OP_REFI, /* 114 Match a back reference, caselessly */
2080 OP_DNREF, /* 115 Match a duplicate name backref, casefully */
2081 OP_DNREFI, /* 116 Match a duplicate name backref, caselessly */
2082 OP_RECURSE, /* 117 Match a numbered subpattern (possibly recursive) */
2083 OP_CALLOUT, /* 118 Call out to external function if provided */
2084
2085 OP_ALT, /* 119 Start of alternation */
2086 OP_KET, /* 120 End of group that doesn't have an unbounded repeat */
2087 OP_KETRMAX, /* 121 These two must remain together and in this */
2088 OP_KETRMIN, /* 122 order. They are for groups the repeat for ever. */
2089 OP_KETRPOS, /* 123 Possessive unlimited repeat. */
2090
2091 /* The assertions must come before BRA, CBRA, ONCE, and COND, and the four
2092 asserts must remain in order. */
2093
2094 OP_REVERSE, /* 124 Move pointer back - used in lookbehind assertions */
2095 OP_ASSERT, /* 125 Positive lookahead */
2096 OP_ASSERT_NOT, /* 126 Negative lookahead */
2097 OP_ASSERTBACK, /* 127 Positive lookbehind */
2098 OP_ASSERTBACK_NOT, /* 128 Negative lookbehind */
2099
2100 /* ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately
2101 after the assertions, with ONCE first, as there's a test for >= ONCE for a
2102 subpattern that isn't an assertion. The POS versions must immediately follow
2103 the non-POS versions in each case. */
2104
2105 OP_ONCE, /* 129 Atomic group, contains captures */
2106 OP_ONCE_NC, /* 130 Atomic group containing no captures */
2107 OP_BRA, /* 131 Start of non-capturing bracket */
2108 OP_BRAPOS, /* 132 Ditto, with unlimited, possessive repeat */
2109 OP_CBRA, /* 133 Start of capturing bracket */
2110 OP_CBRAPOS, /* 134 Ditto, with unlimited, possessive repeat */
2111 OP_COND, /* 135 Conditional group */
2112
2113 /* These five must follow the previous five, in the same order. There's a
2114 check for >= SBRA to distinguish the two sets. */
2115
2116 OP_SBRA, /* 136 Start of non-capturing bracket, check empty */
2117 OP_SBRAPOS, /* 137 Ditto, with unlimited, possessive repeat */
2118 OP_SCBRA, /* 138 Start of capturing bracket, check empty */
2119 OP_SCBRAPOS, /* 139 Ditto, with unlimited, possessive repeat */
2120 OP_SCOND, /* 140 Conditional group, check empty */
2121
2122 /* The next two pairs must (respectively) be kept together. */
2123
2124 OP_CREF, /* 141 Used to hold a capture number as condition */
2125 OP_DNCREF, /* 142 Used to point to duplicate names as a condition */
2126 OP_RREF, /* 143 Used to hold a recursion number as condition */
2127 OP_DNRREF, /* 144 Used to point to duplicate names as a condition */
2128 OP_DEF, /* 145 The DEFINE condition */
2129
2130 OP_BRAZERO, /* 146 These two must remain together and in this */
2131 OP_BRAMINZERO, /* 147 order. */
2132 OP_BRAPOSZERO, /* 148 */
2133
2134 /* These are backtracking control verbs */
2135
2136 OP_MARK, /* 149 always has an argument */
2137 OP_PRUNE, /* 150 */
2138 OP_PRUNE_ARG, /* 151 same, but with argument */
2139 OP_SKIP, /* 152 */
2140 OP_SKIP_ARG, /* 153 same, but with argument */
2141 OP_THEN, /* 154 */
2142 OP_THEN_ARG, /* 155 same, but with argument */
2143 OP_COMMIT, /* 156 */
2144
2145 /* These are forced failure and success verbs */
2146
2147 OP_FAIL, /* 157 */
2148 OP_ACCEPT, /* 158 */
2149 OP_ASSERT_ACCEPT, /* 159 Used inside assertions */
2150 OP_CLOSE, /* 160 Used before OP_ACCEPT to close open captures */
2151
2152 /* This is used to skip a subpattern with a {0} quantifier */
2153
2154 OP_SKIPZERO, /* 161 */
2155
2156 /* This is not an opcode, but is used to check that tables indexed by opcode
2157 are the correct length, in order to catch updating errors - there have been
2158 some in the past. */
2159
2160 OP_TABLE_LENGTH
2161 };
2162
2163 /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
2164 definitions that follow must also be updated to match. There are also tables
2165 called "opcode_possessify" in pcre_compile.c and "coptable" and "poptable" in
2166 pcre_dfa_exec.c that must be updated. */
2167
2168
2169 /* This macro defines textual names for all the opcodes. These are used only
2170 for debugging, and some of them are only partial names. The macro is referenced
2171 only in pcre_printint.c, which fills out the full names in many cases (and in
2172 some cases doesn't actually use these names at all). */
2173
2174 #define OP_NAME_LIST \
2175 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
2176 "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
2177 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
2178 "extuni", "\\Z", "\\z", \
2179 "$", "$", "^", "^", "char", "chari", "not", "noti", \
2180 "*", "*?", "+", "+?", "?", "??", \
2181 "{", "{", "{", \
2182 "*+","++", "?+", "{", \
2183 "*", "*?", "+", "+?", "?", "??", \
2184 "{", "{", "{", \
2185 "*+","++", "?+", "{", \
2186 "*", "*?", "+", "+?", "?", "??", \
2187 "{", "{", "{", \
2188 "*+","++", "?+", "{", \
2189 "*", "*?", "+", "+?", "?", "??", \
2190 "{", "{", "{", \
2191 "*+","++", "?+", "{", \
2192 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
2193 "*+","++", "?+", "{", \
2194 "*", "*?", "+", "+?", "?", "??", "{", "{", \
2195 "*+","++", "?+", "{", \
2196 "class", "nclass", "xclass", "Ref", "Refi", "DnRef", "DnRefi", \
2197 "Recurse", "Callout", \
2198 "Alt", "Ket", "KetRmax", "KetRmin", "KetRpos", \
2199 "Reverse", "Assert", "Assert not", "AssertB", "AssertB not", \
2200 "Once", "Once_NC", \
2201 "Bra", "BraPos", "CBra", "CBraPos", \
2202 "Cond", \
2203 "SBra", "SBraPos", "SCBra", "SCBraPos", \
2204 "SCond", \
2205 "Cond ref", "Cond dnref", "Cond rec", "Cond dnrec", "Cond def", \
2206 "Brazero", "Braminzero", "Braposzero", \
2207 "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \
2208 "*THEN", "*THEN", "*COMMIT", "*FAIL", \
2209 "*ACCEPT", "*ASSERT_ACCEPT", \
2210 "Close", "Skip zero"
2211
2212
2213 /* This macro defines the length of fixed length operations in the compiled
2214 regex. The lengths are used when searching for specific things, and also in the
2215 debugging printing of a compiled regex. We use a macro so that it can be
2216 defined close to the definitions of the opcodes themselves.
2217
2218 As things have been extended, some of these are no longer fixed lenths, but are
2219 minima instead. For example, the length of a single-character repeat may vary
2220 in UTF-8 mode. The code that uses this table must know about such things. */
2221
2222 #define OP_LENGTHS \
2223 1, /* End */ \
2224 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
2225 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
2226 1, 1, 1, /* Any, AllAny, Anybyte */ \
2227 3, 3, /* \P, \p */ \
2228 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
2229 1, /* \X */ \
2230 1, 1, 1, 1, 1, 1, /* \Z, \z, $, $M ^, ^M */ \
2231 2, /* Char - the minimum length */ \
2232 2, /* Chari - the minimum length */ \
2233 2, /* not */ \
2234 2, /* noti */ \
2235 /* Positive single-char repeats ** These are */ \
2236 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
2237 2+IMM2_SIZE, 2+IMM2_SIZE, /* upto, minupto ** mode */ \
2238 2+IMM2_SIZE, /* exact */ \
2239 2, 2, 2, 2+IMM2_SIZE, /* *+, ++, ?+, upto+ */ \
2240 2, 2, 2, 2, 2, 2, /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8 */ \
2241 2+IMM2_SIZE, 2+IMM2_SIZE, /* upto I, minupto I */ \
2242 2+IMM2_SIZE, /* exact I */ \
2243 2, 2, 2, 2+IMM2_SIZE, /* *+I, ++I, ?+I, upto+I */ \
2244 /* Negative single-char repeats - only for chars < 256 */ \
2245 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
2246 2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto, minupto */ \
2247 2+IMM2_SIZE, /* NOT exact */ \
2248 2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *, +, ?, upto */ \
2249 2, 2, 2, 2, 2, 2, /* NOT *I, *?I, +I, +?I, ?I, ??I */ \
2250 2+IMM2_SIZE, 2+IMM2_SIZE, /* NOT upto I, minupto I */ \
2251 2+IMM2_SIZE, /* NOT exact I */ \
2252 2, 2, 2, 2+IMM2_SIZE, /* Possessive NOT *I, +I, ?I, upto I */ \
2253 /* Positive type repeats */ \
2254 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
2255 2+IMM2_SIZE, 2+IMM2_SIZE, /* Type upto, minupto */ \
2256 2+IMM2_SIZE, /* Type exact */ \
2257 2, 2, 2, 2+IMM2_SIZE, /* Possessive *+, ++, ?+, upto+ */ \
2258 /* Character class & ref repeats */ \
2259 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
2260 1+2*IMM2_SIZE, 1+2*IMM2_SIZE, /* CRRANGE, CRMINRANGE */ \
2261 1, 1, 1, 1+2*IMM2_SIZE, /* Possessive *+, ++, ?+, CRPOSRANGE */ \
2262 1+(32/sizeof(pcre_uchar)), /* CLASS */ \
2263 1+(32/sizeof(pcre_uchar)), /* NCLASS */ \
2264 0, /* XCLASS - variable length */ \
2265 1+IMM2_SIZE, /* REF */ \
2266 1+IMM2_SIZE, /* REFI */ \
2267 1+2*IMM2_SIZE, /* DNREF */ \
2268 1+2*IMM2_SIZE, /* DNREFI */ \
2269 1+LINK_SIZE, /* RECURSE */ \
2270 2+2*LINK_SIZE, /* CALLOUT */ \
2271 1+LINK_SIZE, /* Alt */ \
2272 1+LINK_SIZE, /* Ket */ \
2273 1+LINK_SIZE, /* KetRmax */ \
2274 1+LINK_SIZE, /* KetRmin */ \
2275 1+LINK_SIZE, /* KetRpos */ \
2276 1+LINK_SIZE, /* Reverse */ \
2277 1+LINK_SIZE, /* Assert */ \
2278 1+LINK_SIZE, /* Assert not */ \
2279 1+LINK_SIZE, /* Assert behind */ \
2280 1+LINK_SIZE, /* Assert behind not */ \
2281 1+LINK_SIZE, /* ONCE */ \
2282 1+LINK_SIZE, /* ONCE_NC */ \
2283 1+LINK_SIZE, /* BRA */ \
2284 1+LINK_SIZE, /* BRAPOS */ \
2285 1+LINK_SIZE+IMM2_SIZE, /* CBRA */ \
2286 1+LINK_SIZE+IMM2_SIZE, /* CBRAPOS */ \
2287 1+LINK_SIZE, /* COND */ \
2288 1+LINK_SIZE, /* SBRA */ \
2289 1+LINK_SIZE, /* SBRAPOS */ \
2290 1+LINK_SIZE+IMM2_SIZE, /* SCBRA */ \
2291 1+LINK_SIZE+IMM2_SIZE, /* SCBRAPOS */ \
2292 1+LINK_SIZE, /* SCOND */ \
2293 1+IMM2_SIZE, 1+2*IMM2_SIZE, /* CREF, DNCREF */ \
2294 1+IMM2_SIZE, 1+2*IMM2_SIZE, /* RREF, DNRREF */ \
2295 1, /* DEF */ \
2296 1, 1, 1, /* BRAZERO, BRAMINZERO, BRAPOSZERO */ \
2297 3, 1, 3, /* MARK, PRUNE, PRUNE_ARG */ \
2298 1, 3, /* SKIP, SKIP_ARG */ \
2299 1, 3, /* THEN, THEN_ARG */ \
2300 1, 1, 1, 1, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */ \
2301 1+IMM2_SIZE, 1 /* CLOSE, SKIPZERO */
2302
2303 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
2304
2305 #define RREF_ANY 0xffff
2306
2307 /* Compile time error code numbers. They are given names so that they can more
2308 easily be tracked. When a new number is added, the table called eint in
2309 pcreposix.c must be updated. */
2310
2311 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
2312 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
2313 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
2314 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
2315 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
2316 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
2317 ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
2318 ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERR78, ERR79,
2319 ERR80, ERR81, ERR82, ERR83, ERR84, ERR85, ERR86, ERR87, ERRCOUNT };
2320
2321 /* JIT compiling modes. The function list is indexed by them. */
2322
2323 enum { JIT_COMPILE, JIT_PARTIAL_SOFT_COMPILE, JIT_PARTIAL_HARD_COMPILE,
2324 JIT_NUMBER_OF_COMPILE_MODES };
2325
2326 /* The real format of the start of the pcre block; the index of names and the
2327 code vector run on as long as necessary after the end. We store an explicit
2328 offset to the name table so that if a regex is compiled on one host, saved, and
2329 then run on another where the size of pointers is different, all might still
2330 be well.
2331
2332 The size of the structure must be a multiple of 8 bytes. For the case of
2333 compiled-on-4 and run-on-8, we include an extra pointer that is always NULL so
2334 that there are an even number of pointers which therefore are a multiple of 8
2335 bytes.
2336
2337 It is necessary to fork the struct for the 32 bit library, since it needs to
2338 use pcre_uint32 for first_char and req_char. We can't put an ifdef inside the
2339 typedef because pcretest needs access to the struct of the 8-, 16- and 32-bit
2340 variants.
2341
2342 *** WARNING ***
2343 When new fields are added to these structures, remember to adjust the code in
2344 pcre_byte_order.c that is concerned with swapping the byte order of the fields
2345 when a compiled regex is reloaded on a host with different endianness.
2346 *** WARNING ***
2347 There is also similar byte-flipping code in pcretest.c, which is used for
2348 testing the byte-flipping features. It must also be kept in step.
2349 *** WARNING ***
2350 */
2351
2352 typedef struct real_pcre8_or_16 {
2353 pcre_uint32 magic_number;
2354 pcre_uint32 size; /* Total that was malloced */
2355 pcre_uint32 options; /* Public options */
2356 pcre_uint32 flags; /* Private flags */
2357 pcre_uint32 limit_match; /* Limit set from regex */
2358 pcre_uint32 limit_recursion; /* Limit set from regex */
2359 pcre_uint16 first_char; /* Starting character */
2360 pcre_uint16 req_char; /* This character must be seen */
2361 pcre_uint16 max_lookbehind; /* Longest lookbehind (characters) */
2362 pcre_uint16 top_bracket; /* Highest numbered group */
2363 pcre_uint16 top_backref; /* Highest numbered back reference */
2364 pcre_uint16 name_table_offset; /* Offset to name table that follows */
2365 pcre_uint16 name_entry_size; /* Size of any name items */
2366 pcre_uint16 name_count; /* Number of name items */
2367 pcre_uint16 ref_count; /* Reference count */
2368 pcre_uint16 dummy1; /* To ensure size is a multiple of 8 */
2369 pcre_uint16 dummy2; /* To ensure size is a multiple of 8 */
2370 pcre_uint16 dummy3; /* To ensure size is a multiple of 8 */
2371 const pcre_uint8 *tables; /* Pointer to tables or NULL for std */
2372 void *nullpad; /* NULL padding */
2373 } real_pcre8_or_16;
2374
2375 typedef struct real_pcre8_or_16 real_pcre;
2376 typedef struct real_pcre8_or_16 real_pcre16;
2377
2378 typedef struct real_pcre32 {
2379 pcre_uint32 magic_number;
2380 pcre_uint32 size; /* Total that was malloced */
2381 pcre_uint32 options; /* Public options */
2382 pcre_uint32 flags; /* Private flags */
2383 pcre_uint32 limit_match; /* Limit set from regex */
2384 pcre_uint32 limit_recursion; /* Limit set from regex */
2385 pcre_uint32 first_char; /* Starting character */
2386 pcre_uint32 req_char; /* This character must be seen */
2387 pcre_uint16 max_lookbehind; /* Longest lookbehind (characters) */
2388 pcre_uint16 top_bracket; /* Highest numbered group */
2389 pcre_uint16 top_backref; /* Highest numbered back reference */
2390 pcre_uint16 name_table_offset; /* Offset to name table that follows */
2391 pcre_uint16 name_entry_size; /* Size of any name items */
2392 pcre_uint16 name_count; /* Number of name items */
2393 pcre_uint16 ref_count; /* Reference count */
2394 pcre_uint16 dummy; /* To ensure size is a multiple of 8 */
2395 const pcre_uint8 *tables; /* Pointer to tables or NULL for std */
2396 void *nullpad; /* NULL padding */
2397 } real_pcre32;
2398
2399 #if defined COMPILE_PCRE8
2400 #define REAL_PCRE real_pcre
2401 #elif defined COMPILE_PCRE16
2402 #define REAL_PCRE real_pcre16
2403 #elif defined COMPILE_PCRE32
2404 #define REAL_PCRE real_pcre32
2405 #endif
2406
2407 /* Assert that the size of REAL_PCRE is divisible by 8 */
2408 typedef int __assert_real_pcre_size_divisible_8[(sizeof(REAL_PCRE) % 8) == 0 ? 1 : -1];
2409
2410 /* Needed in pcretest to access some fields in the real_pcre* structures
2411 * directly. They're unified for 8/16/32 bits since the structs only differ
2412 * after these fields; if that ever changes, need to fork those defines into
2413 * 8/16 and 32 bit versions. */
2414 #define REAL_PCRE_MAGIC(re) (((REAL_PCRE*)re)->magic_number)
2415 #define REAL_PCRE_SIZE(re) (((REAL_PCRE*)re)->size)
2416 #define REAL_PCRE_OPTIONS(re) (((REAL_PCRE*)re)->options)
2417 #define REAL_PCRE_FLAGS(re) (((REAL_PCRE*)re)->flags)
2418
2419 /* The format of the block used to store data from pcre_study(). The same
2420 remark (see NOTE above) about extending this structure applies. */
2421
2422 typedef struct pcre_study_data {
2423 pcre_uint32 size; /* Total that was malloced */
2424 pcre_uint32 flags; /* Private flags */
2425 pcre_uint8 start_bits[32]; /* Starting char bits */
2426 pcre_uint32 minlength; /* Minimum subject length */
2427 } pcre_study_data;
2428
2429 /* Structure for building a chain of open capturing subpatterns during
2430 compiling, so that instructions to close them can be compiled when (*ACCEPT) is
2431 encountered. This is also used to identify subpatterns that contain recursive
2432 back references to themselves, so that they can be made atomic. */
2433
2434 typedef struct open_capitem {
2435 struct open_capitem *next; /* Chain link */
2436 pcre_uint16 number; /* Capture number */
2437 pcre_uint16 flag; /* Set TRUE if recursive back ref */
2438 } open_capitem;
2439
2440 /* Structure for building a list of named groups during the first pass of
2441 compiling. */
2442
2443 typedef struct named_group {
2444 const pcre_uchar *name; /* Points to the name in the pattern */
2445 int length; /* Length of the name */
2446 pcre_uint32 number; /* Group number */
2447 } named_group;
2448
2449 /* Structure for passing "static" information around between the functions
2450 doing the compiling, so that they are thread-safe. */
2451
2452 typedef struct compile_data {
2453 const pcre_uint8 *lcc; /* Points to lower casing table */
2454 const pcre_uint8 *fcc; /* Points to case-flipping table */
2455 const pcre_uint8 *cbits; /* Points to character type table */
2456 const pcre_uint8 *ctypes; /* Points to table of type maps */
2457 const pcre_uchar *start_workspace;/* The start of working space */
2458 const pcre_uchar *start_code; /* The start of the compiled code */
2459 const pcre_uchar *start_pattern; /* The start of the pattern */
2460 const pcre_uchar *end_pattern; /* The end of the pattern */
2461 pcre_uchar *hwm; /* High watermark of workspace */
2462 open_capitem *open_caps; /* Chain of open capture items */
2463 named_group *named_groups; /* Points to vector in pre-compile */
2464 pcre_uchar *name_table; /* The name/number table */
2465 int names_found; /* Number of entries so far */
2466 int name_entry_size; /* Size of each entry */
2467 int named_group_list_size; /* Number of entries in the list */
2468 int workspace_size; /* Size of workspace */
2469 unsigned int bracount; /* Count of capturing parens as we compile */
2470 int final_bracount; /* Saved value after first pass */
2471 int max_lookbehind; /* Maximum lookbehind (characters) */
2472 int top_backref; /* Maximum back reference */
2473 unsigned int backref_map; /* Bitmap of low back refs */
2474 unsigned int namedrefcount; /* Number of backreferences by name */
2475 int parens_depth; /* Depth of nested parentheses */
2476 int assert_depth; /* Depth of nested assertions */
2477 pcre_uint32 external_options; /* External (initial) options */
2478 pcre_uint32 extended_options; /* External extended (initial) options */
2479 pcre_uint32 external_flags; /* External flag bits to be set */
2480 int req_varyopt; /* "After variable item" flag for reqbyte */
2481 BOOL had_accept; /* (*ACCEPT) encountered */
2482 BOOL had_pruneorskip; /* (*PRUNE) or (*SKIP) encountered */
2483 BOOL check_lookbehind; /* Lookbehinds need later checking */
2484 BOOL dupnames; /* Duplicate names exist */
2485 BOOL dupgroups; /* Duplicate groups exist: (?| found */
2486 BOOL iscondassert; /* Next assert is a condition */
2487 int nltype; /* Newline type */
2488 int nllen; /* Newline string length */
2489 pcre_uchar nl[4]; /* Newline string when fixed length */
2490 } compile_data;
2491
2492 /* Structure for maintaining a chain of pointers to the currently incomplete
2493 branches, for testing for left recursion while compiling. */
2494
2495 typedef struct branch_chain {
2496 struct branch_chain *outer;
2497 pcre_uchar *current_branch;
2498 } branch_chain;
2499
2500 /* Structure for mutual recursion detection. */
2501
2502 typedef struct recurse_check {
2503 struct recurse_check *prev;
2504 const pcre_uchar *group;
2505 } recurse_check;
2506
2507 /* Structure for items in a linked list that represents an explicit recursive
2508 call within the pattern; used by pcre_exec(). */
2509
2510 typedef struct recursion_info {
2511 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
2512 unsigned int group_num; /* Number of group that was called */
2513 int *offset_save; /* Pointer to start of saved offsets */
2514 int saved_max; /* Number of saved offsets */
2515 int saved_capture_last; /* Last capture number */
2516 PCRE_PUCHAR subject_position; /* Position at start of recursion */
2517 } recursion_info;
2518
2519 /* A similar structure for pcre_dfa_exec(). */
2520
2521 typedef struct dfa_recursion_info {
2522 struct dfa_recursion_info *prevrec;
2523 int group_num;
2524 PCRE_PUCHAR subject_position;
2525 } dfa_recursion_info;
2526
2527 /* Structure for building a chain of data for holding the values of the subject
2528 pointer at the start of each subpattern, so as to detect when an empty string
2529 has been matched by a subpattern - to break infinite loops; used by
2530 pcre_exec(). */
2531
2532 typedef struct eptrblock {
2533 struct eptrblock *epb_prev;
2534 PCRE_PUCHAR epb_saved_eptr;
2535 } eptrblock;
2536
2537
2538 /* Structure for passing "static" information around between the functions
2539 doing traditional NFA matching, so that they are thread-safe. */
2540
2541 typedef struct match_data {
2542 unsigned long int match_call_count; /* As it says */
2543 unsigned long int match_limit; /* As it says */
2544 unsigned long int match_limit_recursion; /* As it says */
2545 int *offset_vector; /* Offset vector */
2546 int offset_end; /* One past the end */
2547 int offset_max; /* The maximum usable for return data */
2548 int nltype; /* Newline type */
2549 int nllen; /* Newline string length */
2550 int name_count; /* Number of names in name table */
2551 int name_entry_size; /* Size of entry in names table */
2552 unsigned int skip_arg_count; /* For counting SKIP_ARGs */
2553 unsigned int ignore_skip_arg; /* For re-run when SKIP arg name not found */
2554 pcre_uchar *name_table; /* Table of names */
2555 pcre_uchar nl[4]; /* Newline string when fixed */
2556 const pcre_uint8 *lcc; /* Points to lower casing table */
2557 const pcre_uint8 *fcc; /* Points to case-flipping table */
2558 const pcre_uint8 *ctypes; /* Points to table of type maps */
2559 BOOL notbol; /* NOTBOL flag */
2560 BOOL noteol; /* NOTEOL flag */
2561 BOOL utf; /* UTF-8 / UTF-16 flag */
2562 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
2563 BOOL use_ucp; /* PCRE_UCP flag */
2564 BOOL endonly; /* Dollar not before final \n */
2565 BOOL notempty; /* Empty string match not wanted */
2566 BOOL notempty_atstart; /* Empty string match at start not wanted */
2567 BOOL hitend; /* Hit the end of the subject at some point */
2568 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
2569 BOOL hasthen; /* Pattern contains (*THEN) */
2570 const pcre_uchar *start_code; /* For use when recursing */
2571 PCRE_PUCHAR start_subject; /* Start of the subject string */
2572 PCRE_PUCHAR end_subject; /* End of the subject string */
2573 PCRE_PUCHAR start_match_ptr; /* Start of matched string */
2574 PCRE_PUCHAR end_match_ptr; /* Subject position at end match */
2575 PCRE_PUCHAR start_used_ptr; /* Earliest consulted character */
2576 int partial; /* PARTIAL options */
2577 int end_offset_top; /* Highwater mark at end of match */
2578 pcre_int32 capture_last; /* Most recent capture number + overflow flag */
2579 int start_offset; /* The start offset value */
2580 int match_function_type; /* Set for certain special calls of MATCH() */
2581 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
2582 int eptrn; /* Next free eptrblock */
2583 recursion_info *recursive; /* Linked list of recursion data */
2584 void *callout_data; /* To pass back to callouts */
2585 const pcre_uchar *mark; /* Mark pointer to pass back on success */
2586 const pcre_uchar *nomatch_mark;/* Mark pointer to pass back on failure */
2587 const pcre_uchar *once_target; /* Where to back up to for atomic groups */
2588 #ifdef NO_RECURSE
2589 void *match_frames_base; /* For remembering malloc'd frames */
2590 #endif
2591 } match_data;
2592
2593 /* A similar structure is used for the same purpose by the DFA matching
2594 functions. */
2595
2596 typedef struct dfa_match_data {
2597 const pcre_uchar *start_code; /* Start of the compiled pattern */
2598 const pcre_uchar *start_subject ; /* Start of the subject string */
2599 const pcre_uchar *end_subject; /* End of subject string */
2600 const pcre_uchar *start_used_ptr; /* Earliest consulted character */
2601 const pcre_uint8 *tables; /* Character tables */
2602 int start_offset; /* The start offset value */
2603 int moptions; /* Match options */
2604 int poptions; /* Pattern options */
2605 int nltype; /* Newline type */
2606 int nllen; /* Newline string length */
2607 pcre_uchar nl[4]; /* Newline string when fixed */
2608 void *callout_data; /* To pass back to callouts */
2609 dfa_recursion_info *recursive; /* Linked list of recursion data */
2610 } dfa_match_data;
2611
2612 /* Bit definitions for entries in the pcre_ctypes table. */
2613
2614 #define ctype_space 0x01
2615 #define ctype_letter 0x02
2616 #define ctype_digit 0x04
2617 #define ctype_xdigit 0x08
2618 #define ctype_word 0x10 /* alphanumeric or '_' */
2619 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
2620
2621 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
2622 of bits for a class map. Some classes are built by combining these tables. */
2623
2624 #define cbit_space 0 /* [:space:] or \s */
2625 #define cbit_xdigit 32 /* [:xdigit:] */
2626 #define cbit_digit 64 /* [:digit:] or \d */
2627 #define cbit_upper 96 /* [:upper:] */
2628 #define cbit_lower 128 /* [:lower:] */
2629 #define cbit_word 160 /* [:word:] or \w */
2630 #define cbit_graph 192 /* [:graph:] */
2631 #define cbit_print 224 /* [:print:] */
2632 #define cbit_punct 256 /* [:punct:] */
2633 #define cbit_cntrl 288 /* [:cntrl:] */
2634 #define cbit_length 320 /* Length of the cbits table */
2635
2636 /* Offsets of the various tables from the base tables pointer, and
2637 total length. */
2638
2639 #define lcc_offset 0
2640 #define fcc_offset 256
2641 #define cbits_offset 512
2642 #define ctypes_offset (cbits_offset + cbit_length)
2643 #define tables_length (ctypes_offset + 256)
2644
2645 /* Internal function and data prefixes. */
2646
2647 #if defined COMPILE_PCRE8
2648 #ifndef PUBL
2649 #define PUBL(name) pcre_##name
2650 #endif
2651 #ifndef PRIV
2652 #define PRIV(name) _pcre_##name
2653 #endif
2654 #elif defined COMPILE_PCRE16
2655 #ifndef PUBL
2656 #define PUBL(name) pcre16_##name
2657 #endif
2658 #ifndef PRIV
2659 #define PRIV(name) _pcre16_##name
2660 #endif
2661 #elif defined COMPILE_PCRE32
2662 #ifndef PUBL
2663 #define PUBL(name) pcre32_##name
2664 #endif
2665 #ifndef PRIV
2666 #define PRIV(name) _pcre32_##name
2667 #endif
2668 #else
2669 #error Unsupported compiling mode
2670 #endif /* COMPILE_PCRE[8|16|32] */
2671
2672 /* Layout of the UCP type table that translates property names into types and
2673 codes. Each entry used to point directly to a name, but to reduce the number of
2674 relocations in shared libraries, it now has an offset into a single string
2675 instead. */
2676
2677 typedef struct {
2678 pcre_uint16 name_offset;
2679 pcre_uint16 type;
2680 pcre_uint16 value;
2681 } ucp_type_table;
2682
2683
2684 /* Internal shared data tables. These are tables that are used by more than one
2685 of the exported public functions. They have to be "external" in the C sense,
2686 but are not part of the PCRE public API. The data for these tables is in the
2687 pcre_tables.c module. */
2688
2689 #ifdef COMPILE_PCRE8
2690 extern const int PRIV(utf8_table1)[];
2691 extern const int PRIV(utf8_table1_size);
2692 extern const int PRIV(utf8_table2)[];
2693 extern const int PRIV(utf8_table3)[];
2694 extern const pcre_uint8 PRIV(utf8_table4)[];
2695 #endif /* COMPILE_PCRE8 */
2696
2697 extern const char PRIV(utt_names)[];
2698 extern const ucp_type_table PRIV(utt)[];
2699 extern const int PRIV(utt_size);
2700
2701 extern const pcre_uint8 PRIV(OP_lengths)[];
2702 extern const pcre_uint8 PRIV(default_tables)[];
2703
2704 extern const pcre_uint32 PRIV(hspace_list)[];
2705 extern const pcre_uint32 PRIV(vspace_list)[];
2706
2707
2708 /* Internal shared functions. These are functions that are used by more than
2709 one of the exported public functions. They have to be "external" in the C
2710 sense, but are not part of the PCRE public API. */
2711
2712 /* String comparison functions. */
2713 #if defined COMPILE_PCRE8
2714
2715 #define STRCMP_UC_UC(str1, str2) \
2716 strcmp((char *)(str1), (char *)(str2))
2717 #define STRCMP_UC_C8(str1, str2) \
2718 strcmp((char *)(str1), (str2))
2719 #define STRNCMP_UC_UC(str1, str2, num) \
2720 strncmp((char *)(str1), (char *)(str2), (num))
2721 #define STRNCMP_UC_C8(str1, str2, num) \
2722 strncmp((char *)(str1), (str2), (num))
2723 #define STRLEN_UC(str) strlen((const char *)str)
2724
2725 #elif defined COMPILE_PCRE16 || defined COMPILE_PCRE32
2726
2727 extern int PRIV(strcmp_uc_uc)(const pcre_uchar *,
2728 const pcre_uchar *);
2729 extern int PRIV(strcmp_uc_c8)(const pcre_uchar *,
2730 const char *);
2731 extern int PRIV(strncmp_uc_uc)(const pcre_uchar *,
2732 const pcre_uchar *, unsigned int num);
2733 extern int PRIV(strncmp_uc_c8)(const pcre_uchar *,
2734 const char *, unsigned int num);
2735 extern unsigned int PRIV(strlen_uc)(const pcre_uchar *str);
2736
2737 #define STRCMP_UC_UC(str1, str2) \
2738 PRIV(strcmp_uc_uc)((str1), (str2))
2739 #define STRCMP_UC_C8(str1, str2) \
2740 PRIV(strcmp_uc_c8)((str1), (str2))
2741 #define STRNCMP_UC_UC(str1, str2, num) \
2742 PRIV(strncmp_uc_uc)((str1), (str2), (num))
2743 #define STRNCMP_UC_C8(str1, str2, num) \
2744 PRIV(strncmp_uc_c8)((str1), (str2), (num))
2745 #define STRLEN_UC(str) PRIV(strlen_uc)(str)
2746
2747 #endif /* COMPILE_PCRE[8|16|32] */
2748
2749 #if defined COMPILE_PCRE8 || defined COMPILE_PCRE16
2750
2751 #define STRCMP_UC_UC_TEST(str1, str2) STRCMP_UC_UC(str1, str2)
2752 #define STRCMP_UC_C8_TEST(str1, str2) STRCMP_UC_C8(str1, str2)
2753
2754 #elif defined COMPILE_PCRE32
2755
2756 extern int PRIV(strcmp_uc_uc_utf)(const pcre_uchar *,
2757 const pcre_uchar *);
2758 extern int PRIV(strcmp_uc_c8_utf)(const pcre_uchar *,
2759 const char *);
2760
2761 #define STRCMP_UC_UC_TEST(str1, str2) \
2762 (utf ? PRIV(strcmp_uc_uc_utf)((str1), (str2)) : PRIV(strcmp_uc_uc)((str1), (str2)))
2763 #define STRCMP_UC_C8_TEST(str1, str2) \
2764 (utf ? PRIV(strcmp_uc_c8_utf)((str1), (str2)) : PRIV(strcmp_uc_c8)((str1), (str2)))
2765
2766 #endif /* COMPILE_PCRE[8|16|32] */
2767
2768 extern const pcre_uchar *PRIV(find_bracket)(const pcre_uchar *, BOOL, int);
2769 extern BOOL PRIV(is_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2770 int *, BOOL);
2771 extern unsigned int PRIV(ord2utf)(pcre_uint32, pcre_uchar *);
2772 extern int PRIV(valid_utf)(PCRE_PUCHAR, int, int *);
2773 extern BOOL PRIV(was_newline)(PCRE_PUCHAR, int, PCRE_PUCHAR,
2774 int *, BOOL);
2775 extern BOOL PRIV(xclass)(pcre_uint32, const pcre_uchar *, BOOL);
2776
2777 #ifdef SUPPORT_JIT
2778 extern void PRIV(jit_compile)(const REAL_PCRE *,
2779 PUBL(extra) *, int);
2780 extern int PRIV(jit_exec)(const PUBL(extra) *,
2781 const pcre_uchar *, int, int, int, int *, int);
2782 extern void PRIV(jit_free)(void *);
2783 extern int PRIV(jit_get_size)(void *);
2784 extern const char* PRIV(jit_get_target)(void);
2785 #endif
2786
2787 /* Unicode character database (UCD) */
2788
2789 typedef struct {
2790 pcre_uint8 script; /* ucp_Arabic, etc. */
2791 pcre_uint8 chartype; /* ucp_Cc, etc. (general categories) */
2792 pcre_uint8 gbprop; /* ucp_gbControl, etc. (grapheme break property) */
2793 pcre_uint8 caseset; /* offset to multichar other cases or zero */
2794 pcre_int32 other_case; /* offset to other case, or zero if none */
2795 } ucd_record;
2796
2797 extern const pcre_uint32 PRIV(ucd_caseless_sets)[];
2798 extern const ucd_record PRIV(ucd_records)[];
2799 extern const pcre_uint8 PRIV(ucd_stage1)[];
2800 extern const pcre_uint16 PRIV(ucd_stage2)[];
2801 extern const pcre_uint32 PRIV(ucp_gentype)[];
2802 extern const pcre_uint32 PRIV(ucp_gbtable)[];
2803 #ifdef COMPILE_PCRE32
2804 extern const ucd_record PRIV(dummy_ucd_record)[];
2805 #endif
2806 #ifdef SUPPORT_JIT
2807 extern const int PRIV(ucp_typerange)[];
2808 #endif
2809
2810 #ifdef SUPPORT_UCP
2811 /* UCD access macros */
2812
2813 #define UCD_BLOCK_SIZE 128
2814 #define REAL_GET_UCD(ch) (PRIV(ucd_records) + \
2815 PRIV(ucd_stage2)[PRIV(ucd_stage1)[(int)(ch) / UCD_BLOCK_SIZE] * \
2816 UCD_BLOCK_SIZE + (int)(ch) % UCD_BLOCK_SIZE])
2817
2818 #ifdef COMPILE_PCRE32
2819 #define GET_UCD(ch) ((ch > 0x10ffff)? PRIV(dummy_ucd_record) : REAL_GET_UCD(ch))
2820 #else
2821 #define GET_UCD(ch) REAL_GET_UCD(ch)
2822 #endif
2823
2824 #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
2825 #define UCD_SCRIPT(ch) GET_UCD(ch)->script
2826 #define UCD_CATEGORY(ch) PRIV(ucp_gentype)[UCD_CHARTYPE(ch)]
2827 #define UCD_GRAPHBREAK(ch) GET_UCD(ch)->gbprop
2828 #define UCD_CASESET(ch) GET_UCD(ch)->caseset
2829 #define UCD_OTHERCASE(ch) ((pcre_uint32)((int)ch + (int)(GET_UCD(ch)->other_case)))
2830
2831 #endif /* SUPPORT_UCP */
2832
2833 #endif
2834
2835 /* End of pcre_internal.h */
POSIX BREs & EREs via enhanced PCRE's pcreposix library