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Revision 602 - (show annotations)
Wed May 25 08:29:03 2011 UTC (4 years, 3 months ago) by ph10
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File size: 81694 byte(s)
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Remove OP_OPT by handling /i and /m entirely at compile time. Fixes bug with 
patterns like /(?i:([^b]))(?1)/, where the /i option was mishandled.
1 /*************************************************
2 * Perl-Compatible Regular Expressions *
3 *************************************************/
4
5
6 /* PCRE is a library of functions to support regular expressions whose syntax
7 and semantics are as close as possible to those of the Perl 5 language.
8
9 Written by Philip Hazel
10 Copyright (c) 1997-2010 University of Cambridge
11
12 -----------------------------------------------------------------------------
13 Redistribution and use in source and binary forms, with or without
14 modification, are permitted provided that the following conditions are met:
15
16 * Redistributions of source code must retain the above copyright notice,
17 this list of conditions and the following disclaimer.
18
19 * Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
22
23 * Neither the name of the University of Cambridge nor the names of its
24 contributors may be used to endorse or promote products derived from
25 this software without specific prior written permission.
26
27 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
28 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
31 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 POSSIBILITY OF SUCH DAMAGE.
38 -----------------------------------------------------------------------------
39 */
40
41 /* This header contains definitions that are shared between the different
42 modules, but which are not relevant to the exported API. This includes some
43 functions whose names all begin with "_pcre_". */
44
45 #ifndef PCRE_INTERNAL_H
46 #define PCRE_INTERNAL_H
47
48 /* Define PCRE_DEBUG to get debugging output on stdout. */
49
50 #if 0
51 #define PCRE_DEBUG
52 #endif
53
54 /* We do not support both EBCDIC and UTF-8 at the same time. The "configure"
55 script prevents both being selected, but not everybody uses "configure". */
56
57 #if defined EBCDIC && defined SUPPORT_UTF8
58 #error The use of both EBCDIC and SUPPORT_UTF8 is not supported.
59 #endif
60
61 /* If SUPPORT_UCP is defined, SUPPORT_UTF8 must also be defined. The
62 "configure" script ensures this, but not everybody uses "configure". */
63
64 #if defined SUPPORT_UCP && !defined SUPPORT_UTF8
65 #define SUPPORT_UTF8 1
66 #endif
67
68 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
69 inline, and there are *still* stupid compilers about that don't like indented
70 pre-processor statements, or at least there were when I first wrote this. After
71 all, it had only been about 10 years then...
72
73 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
74 be absolutely sure we get our version. */
75
76 #undef DPRINTF
77 #ifdef PCRE_DEBUG
78 #define DPRINTF(p) printf p
79 #else
80 #define DPRINTF(p) /* Nothing */
81 #endif
82
83
84 /* Standard C headers plus the external interface definition. The only time
85 setjmp and stdarg are used is when NO_RECURSE is set. */
86
87 #include <ctype.h>
88 #include <limits.h>
89 #include <stddef.h>
90 #include <stdio.h>
91 #include <stdlib.h>
92 #include <string.h>
93
94 /* When compiling a DLL for Windows, the exported symbols have to be declared
95 using some MS magic. I found some useful information on this web page:
96 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
97 information there, using __declspec(dllexport) without "extern" we have a
98 definition; with "extern" we have a declaration. The settings here override the
99 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
100 which is all that is needed for applications (they just import the symbols). We
101 use:
102
103 PCRE_EXP_DECL for declarations
104 PCRE_EXP_DEFN for definitions of exported functions
105 PCRE_EXP_DATA_DEFN for definitions of exported variables
106
107 The reason for the two DEFN macros is that in non-Windows environments, one
108 does not want to have "extern" before variable definitions because it leads to
109 compiler warnings. So we distinguish between functions and variables. In
110 Windows, the two should always be the same.
111
112 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
113 which is an application, but needs to import this file in order to "peek" at
114 internals, can #include pcre.h first to get an application's-eye view.
115
116 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
117 special-purpose environments) might want to stick other stuff in front of
118 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
119 PCRE_EXP_DATA_DEFN only if they are not already set. */
120
121 #ifndef PCRE_EXP_DECL
122 # ifdef _WIN32
123 # ifndef PCRE_STATIC
124 # define PCRE_EXP_DECL extern __declspec(dllexport)
125 # define PCRE_EXP_DEFN __declspec(dllexport)
126 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
127 # else
128 # define PCRE_EXP_DECL extern
129 # define PCRE_EXP_DEFN
130 # define PCRE_EXP_DATA_DEFN
131 # endif
132 # else
133 # ifdef __cplusplus
134 # define PCRE_EXP_DECL extern "C"
135 # else
136 # define PCRE_EXP_DECL extern
137 # endif
138 # ifndef PCRE_EXP_DEFN
139 # define PCRE_EXP_DEFN PCRE_EXP_DECL
140 # endif
141 # ifndef PCRE_EXP_DATA_DEFN
142 # define PCRE_EXP_DATA_DEFN
143 # endif
144 # endif
145 #endif
146
147 /* When compiling with the MSVC compiler, it is sometimes necessary to include
148 a "calling convention" before exported function names. (This is secondhand
149 information; I know nothing about MSVC myself). For example, something like
150
151 void __cdecl function(....)
152
153 might be needed. In order so make this easy, all the exported functions have
154 PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
155 set, we ensure here that it has no effect. */
156
157 #ifndef PCRE_CALL_CONVENTION
158 #define PCRE_CALL_CONVENTION
159 #endif
160
161 /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
162 cannot determine these outside the compilation (e.g. by running a program as
163 part of "configure") because PCRE is often cross-compiled for use on other
164 systems. Instead we make use of the maximum sizes that are available at
165 preprocessor time in standard C environments. */
166
167 #if USHRT_MAX == 65535
168 typedef unsigned short pcre_uint16;
169 typedef short pcre_int16;
170 #elif UINT_MAX == 65535
171 typedef unsigned int pcre_uint16;
172 typedef int pcre_int16;
173 #else
174 #error Cannot determine a type for 16-bit unsigned integers
175 #endif
176
177 #if UINT_MAX == 4294967295
178 typedef unsigned int pcre_uint32;
179 typedef int pcre_int32;
180 #elif ULONG_MAX == 4294967295
181 typedef unsigned long int pcre_uint32;
182 typedef long int pcre_int32;
183 #else
184 #error Cannot determine a type for 32-bit unsigned integers
185 #endif
186
187 /* When checking for integer overflow in pcre_compile(), we need to handle
188 large integers. If a 64-bit integer type is available, we can use that.
189 Otherwise we have to cast to double, which of course requires floating point
190 arithmetic. Handle this by defining a macro for the appropriate type. If
191 stdint.h is available, include it; it may define INT64_MAX. Systems that do not
192 have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
193 by "configure". */
194
195 #if HAVE_STDINT_H
196 #include <stdint.h>
197 #elif HAVE_INTTYPES_H
198 #include <inttypes.h>
199 #endif
200
201 #if defined INT64_MAX || defined int64_t
202 #define INT64_OR_DOUBLE int64_t
203 #else
204 #define INT64_OR_DOUBLE double
205 #endif
206
207 /* All character handling must be done as unsigned characters. Otherwise there
208 are problems with top-bit-set characters and functions such as isspace().
209 However, we leave the interface to the outside world as char *, because that
210 should make things easier for callers. We define a short type for unsigned char
211 to save lots of typing. I tried "uchar", but it causes problems on Digital
212 Unix, where it is defined in sys/types, so use "uschar" instead. */
213
214 typedef unsigned char uschar;
215
216 /* This is an unsigned int value that no character can ever have. UTF-8
217 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
218 0x0010ffff). */
219
220 #define NOTACHAR 0xffffffff
221
222 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
223 "any" and "anycrlf" at present). The following macros are used to package up
224 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
225 modules to indicate in which datablock the parameters exist, and what the
226 start/end of string field names are. */
227
228 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
229 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
230 #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
231
232 /* This macro checks for a newline at the given position */
233
234 #define IS_NEWLINE(p) \
235 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
236 ((p) < NLBLOCK->PSEND && \
237 _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\
238 utf8)) \
239 : \
240 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
241 (p)[0] == NLBLOCK->nl[0] && \
242 (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
243 ) \
244 )
245
246 /* This macro checks for a newline immediately preceding the given position */
247
248 #define WAS_NEWLINE(p) \
249 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
250 ((p) > NLBLOCK->PSSTART && \
251 _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
252 &(NLBLOCK->nllen), utf8)) \
253 : \
254 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
255 (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
256 (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
257 ) \
258 )
259
260 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
261 with a custom type. This makes it possible, for example, to allow pcre_exec()
262 to process subject strings that are discontinuous by using a smart pointer
263 class. It must always be possible to inspect all of the subject string in
264 pcre_exec() because of the way it backtracks. Two macros are required in the
265 normal case, for sign-unspecified and unsigned char pointers. The former is
266 used for the external interface and appears in pcre.h, which is why its name
267 must begin with PCRE_. */
268
269 #ifdef CUSTOM_SUBJECT_PTR
270 #define PCRE_SPTR CUSTOM_SUBJECT_PTR
271 #define USPTR CUSTOM_SUBJECT_PTR
272 #else
273 #define PCRE_SPTR const char *
274 #define USPTR const unsigned char *
275 #endif
276
277
278
279 /* Include the public PCRE header and the definitions of UCP character property
280 values. */
281
282 #include "pcre.h"
283 #include "ucp.h"
284
285 /* When compiling for use with the Virtual Pascal compiler, these functions
286 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
287 option on the command line. */
288
289 #ifdef VPCOMPAT
290 #define strlen(s) _strlen(s)
291 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
292 #define memcmp(s,c,n) _memcmp(s,c,n)
293 #define memcpy(d,s,n) _memcpy(d,s,n)
294 #define memmove(d,s,n) _memmove(d,s,n)
295 #define memset(s,c,n) _memset(s,c,n)
296 #else /* VPCOMPAT */
297
298 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
299 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
300 is set. Otherwise, include an emulating function for those systems that have
301 neither (there some non-Unix environments where this is the case). */
302
303 #ifndef HAVE_MEMMOVE
304 #undef memmove /* some systems may have a macro */
305 #ifdef HAVE_BCOPY
306 #define memmove(a, b, c) bcopy(b, a, c)
307 #else /* HAVE_BCOPY */
308 static void *
309 pcre_memmove(void *d, const void *s, size_t n)
310 {
311 size_t i;
312 unsigned char *dest = (unsigned char *)d;
313 const unsigned char *src = (const unsigned char *)s;
314 if (dest > src)
315 {
316 dest += n;
317 src += n;
318 for (i = 0; i < n; ++i) *(--dest) = *(--src);
319 return (void *)dest;
320 }
321 else
322 {
323 for (i = 0; i < n; ++i) *dest++ = *src++;
324 return (void *)(dest - n);
325 }
326 }
327 #define memmove(a, b, c) pcre_memmove(a, b, c)
328 #endif /* not HAVE_BCOPY */
329 #endif /* not HAVE_MEMMOVE */
330 #endif /* not VPCOMPAT */
331
332
333 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
334 in big-endian order) by default. These are used, for example, to link from the
335 start of a subpattern to its alternatives and its end. The use of 2 bytes per
336 offset limits the size of the compiled regex to around 64K, which is big enough
337 for almost everybody. However, I received a request for an even bigger limit.
338 For this reason, and also to make the code easier to maintain, the storing and
339 loading of offsets from the byte string is now handled by the macros that are
340 defined here.
341
342 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
343 the config.h file, but can be overridden by using -D on the command line. This
344 is automated on Unix systems via the "configure" command. */
345
346 #if LINK_SIZE == 2
347
348 #define PUT(a,n,d) \
349 (a[n] = (d) >> 8), \
350 (a[(n)+1] = (d) & 255)
351
352 #define GET(a,n) \
353 (((a)[n] << 8) | (a)[(n)+1])
354
355 #define MAX_PATTERN_SIZE (1 << 16)
356
357
358 #elif LINK_SIZE == 3
359
360 #define PUT(a,n,d) \
361 (a[n] = (d) >> 16), \
362 (a[(n)+1] = (d) >> 8), \
363 (a[(n)+2] = (d) & 255)
364
365 #define GET(a,n) \
366 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
367
368 #define MAX_PATTERN_SIZE (1 << 24)
369
370
371 #elif LINK_SIZE == 4
372
373 #define PUT(a,n,d) \
374 (a[n] = (d) >> 24), \
375 (a[(n)+1] = (d) >> 16), \
376 (a[(n)+2] = (d) >> 8), \
377 (a[(n)+3] = (d) & 255)
378
379 #define GET(a,n) \
380 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
381
382 #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */
383
384
385 #else
386 #error LINK_SIZE must be either 2, 3, or 4
387 #endif
388
389
390 /* Convenience macro defined in terms of the others */
391
392 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
393
394
395 /* PCRE uses some other 2-byte quantities that do not change when the size of
396 offsets changes. There are used for repeat counts and for other things such as
397 capturing parenthesis numbers in back references. */
398
399 #define PUT2(a,n,d) \
400 a[n] = (d) >> 8; \
401 a[(n)+1] = (d) & 255
402
403 #define GET2(a,n) \
404 (((a)[n] << 8) | (a)[(n)+1])
405
406 #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2
407
408
409 /* When UTF-8 encoding is being used, a character is no longer just a single
410 byte. The macros for character handling generate simple sequences when used in
411 byte-mode, and more complicated ones for UTF-8 characters. GETCHARLENTEST is
412 not used when UTF-8 is not supported, so it is not defined, and BACKCHAR should
413 never be called in byte mode. To make sure they can never even appear when
414 UTF-8 support is omitted, we don't even define them. */
415
416 #ifndef SUPPORT_UTF8
417 #define GETCHAR(c, eptr) c = *eptr;
418 #define GETCHARTEST(c, eptr) c = *eptr;
419 #define GETCHARINC(c, eptr) c = *eptr++;
420 #define GETCHARINCTEST(c, eptr) c = *eptr++;
421 #define GETCHARLEN(c, eptr, len) c = *eptr;
422 /* #define GETCHARLENTEST(c, eptr, len) */
423 /* #define BACKCHAR(eptr) */
424
425 #else /* SUPPORT_UTF8 */
426
427 /* These macros were originally written in the form of loops that used data
428 from the tables whose names start with _pcre_utf8_table. They were rewritten by
429 a user so as not to use loops, because in some environments this gives a
430 significant performance advantage, and it seems never to do any harm. */
431
432 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
433 advancing the pointer. */
434
435 #define GETUTF8(c, eptr) \
436 { \
437 if ((c & 0x20) == 0) \
438 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
439 else if ((c & 0x10) == 0) \
440 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
441 else if ((c & 0x08) == 0) \
442 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
443 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
444 else if ((c & 0x04) == 0) \
445 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
446 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
447 (eptr[4] & 0x3f); \
448 else \
449 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
450 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
451 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
452 }
453
454 /* Get the next UTF-8 character, not advancing the pointer. This is called when
455 we know we are in UTF-8 mode. */
456
457 #define GETCHAR(c, eptr) \
458 c = *eptr; \
459 if (c >= 0xc0) GETUTF8(c, eptr);
460
461 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
462 pointer. */
463
464 #define GETCHARTEST(c, eptr) \
465 c = *eptr; \
466 if (utf8 && c >= 0xc0) GETUTF8(c, eptr);
467
468 /* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
469 the pointer. */
470
471 #define GETUTF8INC(c, eptr) \
472 { \
473 if ((c & 0x20) == 0) \
474 c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
475 else if ((c & 0x10) == 0) \
476 { \
477 c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
478 eptr += 2; \
479 } \
480 else if ((c & 0x08) == 0) \
481 { \
482 c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
483 ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
484 eptr += 3; \
485 } \
486 else if ((c & 0x04) == 0) \
487 { \
488 c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
489 ((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
490 (eptr[3] & 0x3f); \
491 eptr += 4; \
492 } \
493 else \
494 { \
495 c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
496 ((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
497 ((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
498 eptr += 5; \
499 } \
500 }
501
502 /* Get the next UTF-8 character, advancing the pointer. This is called when we
503 know we are in UTF-8 mode. */
504
505 #define GETCHARINC(c, eptr) \
506 c = *eptr++; \
507 if (c >= 0xc0) GETUTF8INC(c, eptr);
508
509 /* Get the next character, testing for UTF-8 mode, and advancing the pointer.
510 This is called when we don't know if we are in UTF-8 mode. */
511
512 #define GETCHARINCTEST(c, eptr) \
513 c = *eptr++; \
514 if (utf8 && c >= 0xc0) GETUTF8INC(c, eptr);
515
516 /* Base macro to pick up the remaining bytes of a UTF-8 character, not
517 advancing the pointer, incrementing the length. */
518
519 #define GETUTF8LEN(c, eptr, len) \
520 { \
521 if ((c & 0x20) == 0) \
522 { \
523 c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
524 len++; \
525 } \
526 else if ((c & 0x10) == 0) \
527 { \
528 c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
529 len += 2; \
530 } \
531 else if ((c & 0x08) == 0) \
532 {\
533 c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
534 ((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
535 len += 3; \
536 } \
537 else if ((c & 0x04) == 0) \
538 { \
539 c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
540 ((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
541 (eptr[4] & 0x3f); \
542 len += 4; \
543 } \
544 else \
545 {\
546 c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
547 ((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
548 ((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
549 len += 5; \
550 } \
551 }
552
553 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
554 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
555
556 #define GETCHARLEN(c, eptr, len) \
557 c = *eptr; \
558 if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
559
560 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
561 pointer, incrementing length if there are extra bytes. This is called when we
562 do not know if we are in UTF-8 mode. */
563
564 #define GETCHARLENTEST(c, eptr, len) \
565 c = *eptr; \
566 if (utf8 && c >= 0xc0) GETUTF8LEN(c, eptr, len);
567
568 /* If the pointer is not at the start of a character, move it back until
569 it is. This is called only in UTF-8 mode - we don't put a test within the macro
570 because almost all calls are already within a block of UTF-8 only code. */
571
572 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
573
574 #endif /* SUPPORT_UTF8 */
575
576
577 /* In case there is no definition of offsetof() provided - though any proper
578 Standard C system should have one. */
579
580 #ifndef offsetof
581 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
582 #endif
583
584
585 /* These are the public options that can change during matching. */
586
587 #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
588
589 /* Private flags containing information about the compiled regex. They used to
590 live at the top end of the options word, but that got almost full, so now they
591 are in a 16-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as
592 the restrictions on partial matching have been lifted. It remains for backwards
593 compatibility. */
594
595 #define PCRE_NOPARTIAL 0x0001 /* can't use partial with this regex */
596 #define PCRE_FIRSTSET 0x0002 /* first_byte is set */
597 #define PCRE_REQCHSET 0x0004 /* req_byte is set */
598 #define PCRE_STARTLINE 0x0008 /* start after \n for multiline */
599 #define PCRE_JCHANGED 0x0010 /* j option used in regex */
600 #define PCRE_HASCRORLF 0x0020 /* explicit \r or \n in pattern */
601
602 /* Options for the "extra" block produced by pcre_study(). */
603
604 #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
605 #define PCRE_STUDY_MINLEN 0x02 /* a minimum length field exists */
606
607 /* Masks for identifying the public options that are permitted at compile
608 time, run time, or study time, respectively. */
609
610 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
611 PCRE_NEWLINE_ANYCRLF)
612
613 #define PUBLIC_COMPILE_OPTIONS \
614 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
615 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
616 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
617 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
618 PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE)
619
620 #define PUBLIC_EXEC_OPTIONS \
621 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
622 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
623 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
624
625 #define PUBLIC_DFA_EXEC_OPTIONS \
626 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
627 PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
628 PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
629 PCRE_NO_START_OPTIMIZE)
630
631 #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
632
633 /* Magic number to provide a small check against being handed junk. Also used
634 to detect whether a pattern was compiled on a host of different endianness. */
635
636 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
637
638 /* Negative values for the firstchar and reqchar variables */
639
640 #define REQ_UNSET (-2)
641 #define REQ_NONE (-1)
642
643 /* The maximum remaining length of subject we are prepared to search for a
644 req_byte match. */
645
646 #define REQ_BYTE_MAX 1000
647
648 /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
649 variable-length repeat, or a anything other than literal characters. */
650
651 #define REQ_CASELESS 0x0100 /* indicates caselessness */
652 #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
653
654 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
655 environments where these macros are defined elsewhere. Unfortunately, there
656 is no way to do the same for the typedef. */
657
658 typedef int BOOL;
659
660 #ifndef FALSE
661 #define FALSE 0
662 #define TRUE 1
663 #endif
664
665 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
666 character constants like '*' because the compiler would emit their EBCDIC code,
667 which is different from their ASCII/UTF-8 code. Instead we define macros for
668 the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
669 is enabled. When UTF-8 support is not enabled, the definitions use character
670 literals. Both character and string versions of each character are needed, and
671 there are some longer strings as well.
672
673 This means that, on EBCDIC platforms, the PCRE library can handle either
674 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
675 would need different lookups depending on whether PCRE_UTF8 was set or not.
676 This would make it impossible to use characters in switch/case statements,
677 which would reduce performance. For a theoretical use (which nobody has asked
678 for) in a minority area (EBCDIC platforms), this is not sensible. Any
679 application that did need both could compile two versions of the library, using
680 macros to give the functions distinct names. */
681
682 #ifndef SUPPORT_UTF8
683
684 /* UTF-8 support is not enabled; use the platform-dependent character literals
685 so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
686
687 #define CHAR_HT '\t'
688 #define CHAR_VT '\v'
689 #define CHAR_FF '\f'
690 #define CHAR_CR '\r'
691 #define CHAR_NL '\n'
692 #define CHAR_BS '\b'
693 #define CHAR_BEL '\a'
694 #ifdef EBCDIC
695 #define CHAR_ESC '\047'
696 #define CHAR_DEL '\007'
697 #else
698 #define CHAR_ESC '\033'
699 #define CHAR_DEL '\177'
700 #endif
701
702 #define CHAR_SPACE ' '
703 #define CHAR_EXCLAMATION_MARK '!'
704 #define CHAR_QUOTATION_MARK '"'
705 #define CHAR_NUMBER_SIGN '#'
706 #define CHAR_DOLLAR_SIGN '$'
707 #define CHAR_PERCENT_SIGN '%'
708 #define CHAR_AMPERSAND '&'
709 #define CHAR_APOSTROPHE '\''
710 #define CHAR_LEFT_PARENTHESIS '('
711 #define CHAR_RIGHT_PARENTHESIS ')'
712 #define CHAR_ASTERISK '*'
713 #define CHAR_PLUS '+'
714 #define CHAR_COMMA ','
715 #define CHAR_MINUS '-'
716 #define CHAR_DOT '.'
717 #define CHAR_SLASH '/'
718 #define CHAR_0 '0'
719 #define CHAR_1 '1'
720 #define CHAR_2 '2'
721 #define CHAR_3 '3'
722 #define CHAR_4 '4'
723 #define CHAR_5 '5'
724 #define CHAR_6 '6'
725 #define CHAR_7 '7'
726 #define CHAR_8 '8'
727 #define CHAR_9 '9'
728 #define CHAR_COLON ':'
729 #define CHAR_SEMICOLON ';'
730 #define CHAR_LESS_THAN_SIGN '<'
731 #define CHAR_EQUALS_SIGN '='
732 #define CHAR_GREATER_THAN_SIGN '>'
733 #define CHAR_QUESTION_MARK '?'
734 #define CHAR_COMMERCIAL_AT '@'
735 #define CHAR_A 'A'
736 #define CHAR_B 'B'
737 #define CHAR_C 'C'
738 #define CHAR_D 'D'
739 #define CHAR_E 'E'
740 #define CHAR_F 'F'
741 #define CHAR_G 'G'
742 #define CHAR_H 'H'
743 #define CHAR_I 'I'
744 #define CHAR_J 'J'
745 #define CHAR_K 'K'
746 #define CHAR_L 'L'
747 #define CHAR_M 'M'
748 #define CHAR_N 'N'
749 #define CHAR_O 'O'
750 #define CHAR_P 'P'
751 #define CHAR_Q 'Q'
752 #define CHAR_R 'R'
753 #define CHAR_S 'S'
754 #define CHAR_T 'T'
755 #define CHAR_U 'U'
756 #define CHAR_V 'V'
757 #define CHAR_W 'W'
758 #define CHAR_X 'X'
759 #define CHAR_Y 'Y'
760 #define CHAR_Z 'Z'
761 #define CHAR_LEFT_SQUARE_BRACKET '['
762 #define CHAR_BACKSLASH '\\'
763 #define CHAR_RIGHT_SQUARE_BRACKET ']'
764 #define CHAR_CIRCUMFLEX_ACCENT '^'
765 #define CHAR_UNDERSCORE '_'
766 #define CHAR_GRAVE_ACCENT '`'
767 #define CHAR_a 'a'
768 #define CHAR_b 'b'
769 #define CHAR_c 'c'
770 #define CHAR_d 'd'
771 #define CHAR_e 'e'
772 #define CHAR_f 'f'
773 #define CHAR_g 'g'
774 #define CHAR_h 'h'
775 #define CHAR_i 'i'
776 #define CHAR_j 'j'
777 #define CHAR_k 'k'
778 #define CHAR_l 'l'
779 #define CHAR_m 'm'
780 #define CHAR_n 'n'
781 #define CHAR_o 'o'
782 #define CHAR_p 'p'
783 #define CHAR_q 'q'
784 #define CHAR_r 'r'
785 #define CHAR_s 's'
786 #define CHAR_t 't'
787 #define CHAR_u 'u'
788 #define CHAR_v 'v'
789 #define CHAR_w 'w'
790 #define CHAR_x 'x'
791 #define CHAR_y 'y'
792 #define CHAR_z 'z'
793 #define CHAR_LEFT_CURLY_BRACKET '{'
794 #define CHAR_VERTICAL_LINE '|'
795 #define CHAR_RIGHT_CURLY_BRACKET '}'
796 #define CHAR_TILDE '~'
797
798 #define STR_HT "\t"
799 #define STR_VT "\v"
800 #define STR_FF "\f"
801 #define STR_CR "\r"
802 #define STR_NL "\n"
803 #define STR_BS "\b"
804 #define STR_BEL "\a"
805 #ifdef EBCDIC
806 #define STR_ESC "\047"
807 #define STR_DEL "\007"
808 #else
809 #define STR_ESC "\033"
810 #define STR_DEL "\177"
811 #endif
812
813 #define STR_SPACE " "
814 #define STR_EXCLAMATION_MARK "!"
815 #define STR_QUOTATION_MARK "\""
816 #define STR_NUMBER_SIGN "#"
817 #define STR_DOLLAR_SIGN "$"
818 #define STR_PERCENT_SIGN "%"
819 #define STR_AMPERSAND "&"
820 #define STR_APOSTROPHE "'"
821 #define STR_LEFT_PARENTHESIS "("
822 #define STR_RIGHT_PARENTHESIS ")"
823 #define STR_ASTERISK "*"
824 #define STR_PLUS "+"
825 #define STR_COMMA ","
826 #define STR_MINUS "-"
827 #define STR_DOT "."
828 #define STR_SLASH "/"
829 #define STR_0 "0"
830 #define STR_1 "1"
831 #define STR_2 "2"
832 #define STR_3 "3"
833 #define STR_4 "4"
834 #define STR_5 "5"
835 #define STR_6 "6"
836 #define STR_7 "7"
837 #define STR_8 "8"
838 #define STR_9 "9"
839 #define STR_COLON ":"
840 #define STR_SEMICOLON ";"
841 #define STR_LESS_THAN_SIGN "<"
842 #define STR_EQUALS_SIGN "="
843 #define STR_GREATER_THAN_SIGN ">"
844 #define STR_QUESTION_MARK "?"
845 #define STR_COMMERCIAL_AT "@"
846 #define STR_A "A"
847 #define STR_B "B"
848 #define STR_C "C"
849 #define STR_D "D"
850 #define STR_E "E"
851 #define STR_F "F"
852 #define STR_G "G"
853 #define STR_H "H"
854 #define STR_I "I"
855 #define STR_J "J"
856 #define STR_K "K"
857 #define STR_L "L"
858 #define STR_M "M"
859 #define STR_N "N"
860 #define STR_O "O"
861 #define STR_P "P"
862 #define STR_Q "Q"
863 #define STR_R "R"
864 #define STR_S "S"
865 #define STR_T "T"
866 #define STR_U "U"
867 #define STR_V "V"
868 #define STR_W "W"
869 #define STR_X "X"
870 #define STR_Y "Y"
871 #define STR_Z "Z"
872 #define STR_LEFT_SQUARE_BRACKET "["
873 #define STR_BACKSLASH "\\"
874 #define STR_RIGHT_SQUARE_BRACKET "]"
875 #define STR_CIRCUMFLEX_ACCENT "^"
876 #define STR_UNDERSCORE "_"
877 #define STR_GRAVE_ACCENT "`"
878 #define STR_a "a"
879 #define STR_b "b"
880 #define STR_c "c"
881 #define STR_d "d"
882 #define STR_e "e"
883 #define STR_f "f"
884 #define STR_g "g"
885 #define STR_h "h"
886 #define STR_i "i"
887 #define STR_j "j"
888 #define STR_k "k"
889 #define STR_l "l"
890 #define STR_m "m"
891 #define STR_n "n"
892 #define STR_o "o"
893 #define STR_p "p"
894 #define STR_q "q"
895 #define STR_r "r"
896 #define STR_s "s"
897 #define STR_t "t"
898 #define STR_u "u"
899 #define STR_v "v"
900 #define STR_w "w"
901 #define STR_x "x"
902 #define STR_y "y"
903 #define STR_z "z"
904 #define STR_LEFT_CURLY_BRACKET "{"
905 #define STR_VERTICAL_LINE "|"
906 #define STR_RIGHT_CURLY_BRACKET "}"
907 #define STR_TILDE "~"
908
909 #define STRING_ACCEPT0 "ACCEPT\0"
910 #define STRING_COMMIT0 "COMMIT\0"
911 #define STRING_F0 "F\0"
912 #define STRING_FAIL0 "FAIL\0"
913 #define STRING_MARK0 "MARK\0"
914 #define STRING_PRUNE0 "PRUNE\0"
915 #define STRING_SKIP0 "SKIP\0"
916 #define STRING_THEN "THEN"
917
918 #define STRING_alpha0 "alpha\0"
919 #define STRING_lower0 "lower\0"
920 #define STRING_upper0 "upper\0"
921 #define STRING_alnum0 "alnum\0"
922 #define STRING_ascii0 "ascii\0"
923 #define STRING_blank0 "blank\0"
924 #define STRING_cntrl0 "cntrl\0"
925 #define STRING_digit0 "digit\0"
926 #define STRING_graph0 "graph\0"
927 #define STRING_print0 "print\0"
928 #define STRING_punct0 "punct\0"
929 #define STRING_space0 "space\0"
930 #define STRING_word0 "word\0"
931 #define STRING_xdigit "xdigit"
932
933 #define STRING_DEFINE "DEFINE"
934
935 #define STRING_CR_RIGHTPAR "CR)"
936 #define STRING_LF_RIGHTPAR "LF)"
937 #define STRING_CRLF_RIGHTPAR "CRLF)"
938 #define STRING_ANY_RIGHTPAR "ANY)"
939 #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
940 #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
941 #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
942 #define STRING_UTF8_RIGHTPAR "UTF8)"
943 #define STRING_UCP_RIGHTPAR "UCP)"
944 #define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)"
945
946 #else /* SUPPORT_UTF8 */
947
948 /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
949 works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
950 only. */
951
952 #define CHAR_HT '\011'
953 #define CHAR_VT '\013'
954 #define CHAR_FF '\014'
955 #define CHAR_CR '\015'
956 #define CHAR_NL '\012'
957 #define CHAR_BS '\010'
958 #define CHAR_BEL '\007'
959 #define CHAR_ESC '\033'
960 #define CHAR_DEL '\177'
961
962 #define CHAR_SPACE '\040'
963 #define CHAR_EXCLAMATION_MARK '\041'
964 #define CHAR_QUOTATION_MARK '\042'
965 #define CHAR_NUMBER_SIGN '\043'
966 #define CHAR_DOLLAR_SIGN '\044'
967 #define CHAR_PERCENT_SIGN '\045'
968 #define CHAR_AMPERSAND '\046'
969 #define CHAR_APOSTROPHE '\047'
970 #define CHAR_LEFT_PARENTHESIS '\050'
971 #define CHAR_RIGHT_PARENTHESIS '\051'
972 #define CHAR_ASTERISK '\052'
973 #define CHAR_PLUS '\053'
974 #define CHAR_COMMA '\054'
975 #define CHAR_MINUS '\055'
976 #define CHAR_DOT '\056'
977 #define CHAR_SLASH '\057'
978 #define CHAR_0 '\060'
979 #define CHAR_1 '\061'
980 #define CHAR_2 '\062'
981 #define CHAR_3 '\063'
982 #define CHAR_4 '\064'
983 #define CHAR_5 '\065'
984 #define CHAR_6 '\066'
985 #define CHAR_7 '\067'
986 #define CHAR_8 '\070'
987 #define CHAR_9 '\071'
988 #define CHAR_COLON '\072'
989 #define CHAR_SEMICOLON '\073'
990 #define CHAR_LESS_THAN_SIGN '\074'
991 #define CHAR_EQUALS_SIGN '\075'
992 #define CHAR_GREATER_THAN_SIGN '\076'
993 #define CHAR_QUESTION_MARK '\077'
994 #define CHAR_COMMERCIAL_AT '\100'
995 #define CHAR_A '\101'
996 #define CHAR_B '\102'
997 #define CHAR_C '\103'
998 #define CHAR_D '\104'
999 #define CHAR_E '\105'
1000 #define CHAR_F '\106'
1001 #define CHAR_G '\107'
1002 #define CHAR_H '\110'
1003 #define CHAR_I '\111'
1004 #define CHAR_J '\112'
1005 #define CHAR_K '\113'
1006 #define CHAR_L '\114'
1007 #define CHAR_M '\115'
1008 #define CHAR_N '\116'
1009 #define CHAR_O '\117'
1010 #define CHAR_P '\120'
1011 #define CHAR_Q '\121'
1012 #define CHAR_R '\122'
1013 #define CHAR_S '\123'
1014 #define CHAR_T '\124'
1015 #define CHAR_U '\125'
1016 #define CHAR_V '\126'
1017 #define CHAR_W '\127'
1018 #define CHAR_X '\130'
1019 #define CHAR_Y '\131'
1020 #define CHAR_Z '\132'
1021 #define CHAR_LEFT_SQUARE_BRACKET '\133'
1022 #define CHAR_BACKSLASH '\134'
1023 #define CHAR_RIGHT_SQUARE_BRACKET '\135'
1024 #define CHAR_CIRCUMFLEX_ACCENT '\136'
1025 #define CHAR_UNDERSCORE '\137'
1026 #define CHAR_GRAVE_ACCENT '\140'
1027 #define CHAR_a '\141'
1028 #define CHAR_b '\142'
1029 #define CHAR_c '\143'
1030 #define CHAR_d '\144'
1031 #define CHAR_e '\145'
1032 #define CHAR_f '\146'
1033 #define CHAR_g '\147'
1034 #define CHAR_h '\150'
1035 #define CHAR_i '\151'
1036 #define CHAR_j '\152'
1037 #define CHAR_k '\153'
1038 #define CHAR_l '\154'
1039 #define CHAR_m '\155'
1040 #define CHAR_n '\156'
1041 #define CHAR_o '\157'
1042 #define CHAR_p '\160'
1043 #define CHAR_q '\161'
1044 #define CHAR_r '\162'
1045 #define CHAR_s '\163'
1046 #define CHAR_t '\164'
1047 #define CHAR_u '\165'
1048 #define CHAR_v '\166'
1049 #define CHAR_w '\167'
1050 #define CHAR_x '\170'
1051 #define CHAR_y '\171'
1052 #define CHAR_z '\172'
1053 #define CHAR_LEFT_CURLY_BRACKET '\173'
1054 #define CHAR_VERTICAL_LINE '\174'
1055 #define CHAR_RIGHT_CURLY_BRACKET '\175'
1056 #define CHAR_TILDE '\176'
1057
1058 #define STR_HT "\011"
1059 #define STR_VT "\013"
1060 #define STR_FF "\014"
1061 #define STR_CR "\015"
1062 #define STR_NL "\012"
1063 #define STR_BS "\010"
1064 #define STR_BEL "\007"
1065 #define STR_ESC "\033"
1066 #define STR_DEL "\177"
1067
1068 #define STR_SPACE "\040"
1069 #define STR_EXCLAMATION_MARK "\041"
1070 #define STR_QUOTATION_MARK "\042"
1071 #define STR_NUMBER_SIGN "\043"
1072 #define STR_DOLLAR_SIGN "\044"
1073 #define STR_PERCENT_SIGN "\045"
1074 #define STR_AMPERSAND "\046"
1075 #define STR_APOSTROPHE "\047"
1076 #define STR_LEFT_PARENTHESIS "\050"
1077 #define STR_RIGHT_PARENTHESIS "\051"
1078 #define STR_ASTERISK "\052"
1079 #define STR_PLUS "\053"
1080 #define STR_COMMA "\054"
1081 #define STR_MINUS "\055"
1082 #define STR_DOT "\056"
1083 #define STR_SLASH "\057"
1084 #define STR_0 "\060"
1085 #define STR_1 "\061"
1086 #define STR_2 "\062"
1087 #define STR_3 "\063"
1088 #define STR_4 "\064"
1089 #define STR_5 "\065"
1090 #define STR_6 "\066"
1091 #define STR_7 "\067"
1092 #define STR_8 "\070"
1093 #define STR_9 "\071"
1094 #define STR_COLON "\072"
1095 #define STR_SEMICOLON "\073"
1096 #define STR_LESS_THAN_SIGN "\074"
1097 #define STR_EQUALS_SIGN "\075"
1098 #define STR_GREATER_THAN_SIGN "\076"
1099 #define STR_QUESTION_MARK "\077"
1100 #define STR_COMMERCIAL_AT "\100"
1101 #define STR_A "\101"
1102 #define STR_B "\102"
1103 #define STR_C "\103"
1104 #define STR_D "\104"
1105 #define STR_E "\105"
1106 #define STR_F "\106"
1107 #define STR_G "\107"
1108 #define STR_H "\110"
1109 #define STR_I "\111"
1110 #define STR_J "\112"
1111 #define STR_K "\113"
1112 #define STR_L "\114"
1113 #define STR_M "\115"
1114 #define STR_N "\116"
1115 #define STR_O "\117"
1116 #define STR_P "\120"
1117 #define STR_Q "\121"
1118 #define STR_R "\122"
1119 #define STR_S "\123"
1120 #define STR_T "\124"
1121 #define STR_U "\125"
1122 #define STR_V "\126"
1123 #define STR_W "\127"
1124 #define STR_X "\130"
1125 #define STR_Y "\131"
1126 #define STR_Z "\132"
1127 #define STR_LEFT_SQUARE_BRACKET "\133"
1128 #define STR_BACKSLASH "\134"
1129 #define STR_RIGHT_SQUARE_BRACKET "\135"
1130 #define STR_CIRCUMFLEX_ACCENT "\136"
1131 #define STR_UNDERSCORE "\137"
1132 #define STR_GRAVE_ACCENT "\140"
1133 #define STR_a "\141"
1134 #define STR_b "\142"
1135 #define STR_c "\143"
1136 #define STR_d "\144"
1137 #define STR_e "\145"
1138 #define STR_f "\146"
1139 #define STR_g "\147"
1140 #define STR_h "\150"
1141 #define STR_i "\151"
1142 #define STR_j "\152"
1143 #define STR_k "\153"
1144 #define STR_l "\154"
1145 #define STR_m "\155"
1146 #define STR_n "\156"
1147 #define STR_o "\157"
1148 #define STR_p "\160"
1149 #define STR_q "\161"
1150 #define STR_r "\162"
1151 #define STR_s "\163"
1152 #define STR_t "\164"
1153 #define STR_u "\165"
1154 #define STR_v "\166"
1155 #define STR_w "\167"
1156 #define STR_x "\170"
1157 #define STR_y "\171"
1158 #define STR_z "\172"
1159 #define STR_LEFT_CURLY_BRACKET "\173"
1160 #define STR_VERTICAL_LINE "\174"
1161 #define STR_RIGHT_CURLY_BRACKET "\175"
1162 #define STR_TILDE "\176"
1163
1164 #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1165 #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1166 #define STRING_F0 STR_F "\0"
1167 #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
1168 #define STRING_MARK0 STR_M STR_A STR_R STR_K "\0"
1169 #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
1170 #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
1171 #define STRING_THEN STR_T STR_H STR_E STR_N
1172
1173 #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
1174 #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
1175 #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
1176 #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
1177 #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
1178 #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
1179 #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
1180 #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
1181 #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
1182 #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
1183 #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
1184 #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
1185 #define STRING_word0 STR_w STR_o STR_r STR_d "\0"
1186 #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
1187
1188 #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
1189
1190 #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
1191 #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
1192 #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1193 #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1194 #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1195 #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
1196 #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
1197 #define STRING_UTF8_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1198 #define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
1199 #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
1200
1201 #endif /* SUPPORT_UTF8 */
1202
1203 /* Escape items that are just an encoding of a particular data value. */
1204
1205 #ifndef ESC_e
1206 #define ESC_e CHAR_ESC
1207 #endif
1208
1209 #ifndef ESC_f
1210 #define ESC_f CHAR_FF
1211 #endif
1212
1213 #ifndef ESC_n
1214 #define ESC_n CHAR_NL
1215 #endif
1216
1217 #ifndef ESC_r
1218 #define ESC_r CHAR_CR
1219 #endif
1220
1221 /* We can't officially use ESC_t because it is a POSIX reserved identifier
1222 (presumably because of all the others like size_t). */
1223
1224 #ifndef ESC_tee
1225 #define ESC_tee CHAR_HT
1226 #endif
1227
1228 /* Codes for different types of Unicode property */
1229
1230 #define PT_ANY 0 /* Any property - matches all chars */
1231 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
1232 #define PT_GC 2 /* Specified general characteristic (e.g. L) */
1233 #define PT_PC 3 /* Specified particular characteristic (e.g. Lu) */
1234 #define PT_SC 4 /* Script (e.g. Han) */
1235 #define PT_ALNUM 5 /* Alphanumeric - the union of L and N */
1236 #define PT_SPACE 6 /* Perl space - Z plus 9,10,12,13 */
1237 #define PT_PXSPACE 7 /* POSIX space - Z plus 9,10,11,12,13 */
1238 #define PT_WORD 8 /* Word - L plus N plus underscore */
1239
1240 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1241 contain UTF-8 characters with values greater than 255. */
1242
1243 #define XCL_NOT 0x01 /* Flag: this is a negative class */
1244 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
1245
1246 #define XCL_END 0 /* Marks end of individual items */
1247 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
1248 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
1249 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
1250 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
1251
1252 /* These are escaped items that aren't just an encoding of a particular data
1253 value such as \n. They must have non-zero values, as check_escape() returns
1254 their negation. Also, they must appear in the same order as in the opcode
1255 definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
1256 corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1257 used for [^] in JavaScript compatibility mode. In non-DOTALL mode, "." behaves
1258 like \N.
1259
1260 The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
1261 when PCRE_UCP is set, when replacement of \d etc by \p sequences is required.
1262 They must be contiguous, and remain in order so that the replacements can be
1263 looked up from a table.
1264
1265 The final escape must be ESC_REF as subsequent values are used for
1266 backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
1267 greater than ESC_b and less than ESC_Z to detect the types that may be
1268 repeated. These are the types that consume characters. If any new escapes are
1269 put in between that don't consume a character, that code will have to change.
1270 */
1271
1272 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1273 ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1274 ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
1275 ESC_E, ESC_Q, ESC_g, ESC_k,
1276 ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu,
1277 ESC_REF };
1278
1279 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1280 OP_EOD must correspond in order to the list of escapes immediately above.
1281
1282 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1283 that follow must also be updated to match. There are also tables called
1284 "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1285
1286 enum {
1287 OP_END, /* 0 End of pattern */
1288
1289 /* Values corresponding to backslashed metacharacters */
1290
1291 OP_SOD, /* 1 Start of data: \A */
1292 OP_SOM, /* 2 Start of match (subject + offset): \G */
1293 OP_SET_SOM, /* 3 Set start of match (\K) */
1294 OP_NOT_WORD_BOUNDARY, /* 4 \B */
1295 OP_WORD_BOUNDARY, /* 5 \b */
1296 OP_NOT_DIGIT, /* 6 \D */
1297 OP_DIGIT, /* 7 \d */
1298 OP_NOT_WHITESPACE, /* 8 \S */
1299 OP_WHITESPACE, /* 9 \s */
1300 OP_NOT_WORDCHAR, /* 10 \W */
1301 OP_WORDCHAR, /* 11 \w */
1302
1303 OP_ANY, /* 12 Match any character except newline */
1304 OP_ALLANY, /* 13 Match any character */
1305 OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1306 OP_NOTPROP, /* 15 \P (not Unicode property) */
1307 OP_PROP, /* 16 \p (Unicode property) */
1308 OP_ANYNL, /* 17 \R (any newline sequence) */
1309 OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
1310 OP_HSPACE, /* 19 \h (horizontal whitespace) */
1311 OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
1312 OP_VSPACE, /* 21 \v (vertical whitespace) */
1313 OP_EXTUNI, /* 22 \X (extended Unicode sequence */
1314 OP_EODN, /* 23 End of data or \n at end of data: \Z. */
1315 OP_EOD, /* 24 End of data: \z */
1316
1317 OP_CIRC, /* 25 Start of line - not multiline */
1318 OP_CIRCM, /* 26 Start of line - multiline */
1319 OP_DOLL, /* 27 End of line - not multiline */
1320 OP_DOLLM, /* 28 End of line - multiline */
1321 OP_CHAR, /* 29 Match one character, casefully */
1322 OP_CHARI, /* 30 Match one character, caselessly */
1323 OP_NOT, /* 31 Match one character, not the given one, casefully */
1324 OP_NOTI, /* 32 Match one character, not the given one, caselessly */
1325
1326 /* The following sets of 13 opcodes must always be kept in step because
1327 the offset from the first one is used to generate the others. */
1328
1329 /**** Single characters, caseful, must precede the caseless ones ****/
1330
1331 OP_STAR, /* 33 The maximizing and minimizing versions of */
1332 OP_MINSTAR, /* 34 these six opcodes must come in pairs, with */
1333 OP_PLUS, /* 35 the minimizing one second. */
1334 OP_MINPLUS, /* 36 */
1335 OP_QUERY, /* 37 */
1336 OP_MINQUERY, /* 38 */
1337
1338 OP_UPTO, /* 39 From 0 to n matches of one character, caseful*/
1339 OP_MINUPTO, /* 40 */
1340 OP_EXACT, /* 41 Exactly n matches */
1341
1342 OP_POSSTAR, /* 42 Possessified star, caseful */
1343 OP_POSPLUS, /* 43 Possessified plus, caseful */
1344 OP_POSQUERY, /* 44 Posesssified query, caseful */
1345 OP_POSUPTO, /* 45 Possessified upto, caseful */
1346
1347 /**** Single characters, caseless, must follow the caseful ones */
1348
1349 OP_STARI, /* 46 */
1350 OP_MINSTARI, /* 47 */
1351 OP_PLUSI, /* 48 */
1352 OP_MINPLUSI, /* 49 */
1353 OP_QUERYI, /* 50 */
1354 OP_MINQUERYI, /* 51 */
1355
1356 OP_UPTOI, /* 52 From 0 to n matches of one character, caseless */
1357 OP_MINUPTOI, /* 53 */
1358 OP_EXACTI, /* 54 */
1359
1360 OP_POSSTARI, /* 55 Possessified star, caseless */
1361 OP_POSPLUSI, /* 56 Possessified plus, caseless */
1362 OP_POSQUERYI, /* 57 Posesssified query, caseless */
1363 OP_POSUPTOI, /* 58 Possessified upto, caseless */
1364
1365 /**** The negated ones must follow the non-negated ones, and match them ****/
1366 /**** Negated single character, caseful; must precede the caseless ones ****/
1367
1368 OP_NOTSTAR, /* 59 The maximizing and minimizing versions of */
1369 OP_NOTMINSTAR, /* 60 these six opcodes must come in pairs, with */
1370 OP_NOTPLUS, /* 61 the minimizing one second. They must be in */
1371 OP_NOTMINPLUS, /* 62 exactly the same order as those above. */
1372 OP_NOTQUERY, /* 63 */
1373 OP_NOTMINQUERY, /* 64 */
1374
1375 OP_NOTUPTO, /* 65 From 0 to n matches, caseful */
1376 OP_NOTMINUPTO, /* 66 */
1377 OP_NOTEXACT, /* 67 Exactly n matches */
1378
1379 OP_NOTPOSSTAR, /* 68 Possessified versions, caseful */
1380 OP_NOTPOSPLUS, /* 69 */
1381 OP_NOTPOSQUERY, /* 70 */
1382 OP_NOTPOSUPTO, /* 71 */
1383
1384 /**** Negated single character, caseless; must follow the caseful ones ****/
1385
1386 OP_NOTSTARI, /* 72 */
1387 OP_NOTMINSTARI, /* 73 */
1388 OP_NOTPLUSI, /* 74 */
1389 OP_NOTMINPLUSI, /* 75 */
1390 OP_NOTQUERYI, /* 76 */
1391 OP_NOTMINQUERYI, /* 77 */
1392
1393 OP_NOTUPTOI, /* 78 From 0 to n matches, caseless */
1394 OP_NOTMINUPTOI, /* 79 */
1395 OP_NOTEXACTI, /* 80 Exactly n matches */
1396
1397 OP_NOTPOSSTARI, /* 81 Possessified versions, caseless */
1398 OP_NOTPOSPLUSI, /* 82 */
1399 OP_NOTPOSQUERYI, /* 83 */
1400 OP_NOTPOSUPTOI, /* 84 */
1401
1402 /**** Character types ****/
1403
1404 OP_TYPESTAR, /* 85 The maximizing and minimizing versions of */
1405 OP_TYPEMINSTAR, /* 86 these six opcodes must come in pairs, with */
1406 OP_TYPEPLUS, /* 87 the minimizing one second. These codes must */
1407 OP_TYPEMINPLUS, /* 88 be in exactly the same order as those above. */
1408 OP_TYPEQUERY, /* 89 */
1409 OP_TYPEMINQUERY, /* 90 */
1410
1411 OP_TYPEUPTO, /* 91 From 0 to n matches */
1412 OP_TYPEMINUPTO, /* 92 */
1413 OP_TYPEEXACT, /* 93 Exactly n matches */
1414
1415 OP_TYPEPOSSTAR, /* 94 Possessified versions */
1416 OP_TYPEPOSPLUS, /* 95 */
1417 OP_TYPEPOSQUERY, /* 96 */
1418 OP_TYPEPOSUPTO, /* 97 */
1419
1420 /* These are used for character classes and back references; only the
1421 first six are the same as the sets above. */
1422
1423 OP_CRSTAR, /* 98 The maximizing and minimizing versions of */
1424 OP_CRMINSTAR, /* 99 all these opcodes must come in pairs, with */
1425 OP_CRPLUS, /* 100 the minimizing one second. These codes must */
1426 OP_CRMINPLUS, /* 101 be in exactly the same order as those above. */
1427 OP_CRQUERY, /* 102 */
1428 OP_CRMINQUERY, /* 103 */
1429
1430 OP_CRRANGE, /* 104 These are different to the three sets above. */
1431 OP_CRMINRANGE, /* 105 */
1432
1433 /* End of quantifier opcodes */
1434
1435 OP_CLASS, /* 106 Match a character class, chars < 256 only */
1436 OP_NCLASS, /* 107 Same, but the bitmap was created from a negative
1437 class - the difference is relevant only when a
1438 UTF-8 character > 255 is encountered. */
1439 OP_XCLASS, /* 108 Extended class for handling UTF-8 chars within the
1440 class. This does both positive and negative. */
1441 OP_REF, /* 109 Match a back reference, casefully */
1442 OP_REFI, /* 110 Match a back reference, caselessly */
1443 OP_RECURSE, /* 111 Match a numbered subpattern (possibly recursive) */
1444 OP_CALLOUT, /* 112 Call out to external function if provided */
1445
1446 OP_ALT, /* 113 Start of alternation */
1447 OP_KET, /* 114 End of group that doesn't have an unbounded repeat */
1448 OP_KETRMAX, /* 115 These two must remain together and in this */
1449 OP_KETRMIN, /* 116 order. They are for groups the repeat for ever. */
1450
1451 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
1452
1453 OP_ASSERT, /* 117 Positive lookahead */
1454 OP_ASSERT_NOT, /* 118 Negative lookahead */
1455 OP_ASSERTBACK, /* 119 Positive lookbehind */
1456 OP_ASSERTBACK_NOT, /* 120 Negative lookbehind */
1457 OP_REVERSE, /* 121 Move pointer back - used in lookbehind assertions */
1458
1459 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
1460 as there's a test for >= ONCE for a subpattern that isn't an assertion. */
1461
1462 OP_ONCE, /* 122 Atomic group */
1463 OP_BRA, /* 123 Start of non-capturing bracket */
1464 OP_CBRA, /* 124 Start of capturing bracket */
1465 OP_COND, /* 125 Conditional group */
1466
1467 /* These three must follow the previous three, in the same order. There's a
1468 check for >= SBRA to distinguish the two sets. */
1469
1470 OP_SBRA, /* 126 Start of non-capturing bracket, check empty */
1471 OP_SCBRA, /* 127 Start of capturing bracket, check empty */
1472 OP_SCOND, /* 128 Conditional group, check empty */
1473
1474 /* The next two pairs must (respectively) be kept together. */
1475
1476 OP_CREF, /* 129 Used to hold a capture number as condition */
1477 OP_NCREF, /* 130 Same, but generated by a name reference*/
1478 OP_RREF, /* 131 Used to hold a recursion number as condition */
1479 OP_NRREF, /* 132 Same, but generated by a name reference*/
1480 OP_DEF, /* 133 The DEFINE condition */
1481
1482 OP_BRAZERO, /* 134 These two must remain together and in this */
1483 OP_BRAMINZERO, /* 135 order. */
1484
1485 /* These are backtracking control verbs */
1486
1487 OP_MARK, /* 136 always has an argument */
1488 OP_PRUNE, /* 137 */
1489 OP_PRUNE_ARG, /* 138 same, but with argument */
1490 OP_SKIP, /* 139 */
1491 OP_SKIP_ARG, /* 140 same, but with argument */
1492 OP_THEN, /* 141 */
1493 OP_THEN_ARG, /* 142 same, but with argument */
1494 OP_COMMIT, /* 143 */
1495
1496 /* These are forced failure and success verbs */
1497
1498 OP_FAIL, /* 144 */
1499 OP_ACCEPT, /* 145 */
1500 OP_CLOSE, /* 146 Used before OP_ACCEPT to close open captures */
1501
1502 /* This is used to skip a subpattern with a {0} quantifier */
1503
1504 OP_SKIPZERO, /* 147 */
1505
1506 /* This is not an opcode, but is used to check that tables indexed by opcode
1507 are the correct length, in order to catch updating errors - there have been
1508 some in the past. */
1509
1510 OP_TABLE_LENGTH
1511 };
1512
1513 /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
1514 definitions that follow must also be updated to match. There are also tables
1515 called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1516
1517
1518 /* This macro defines textual names for all the opcodes. These are used only
1519 for debugging, and some of them are only partial names. The macro is referenced
1520 only in pcre_printint.c, which fills out the full names in many cases (and in
1521 some cases doesn't actually use these names at all). */
1522
1523 #define OP_NAME_LIST \
1524 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
1525 "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
1526 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
1527 "extuni", "\\Z", "\\z", \
1528 "^", "^", "$", "$", "char", "chari", "not", "noti", \
1529 "*", "*?", "+", "+?", "?", "??", \
1530 "{", "{", "{", \
1531 "*+","++", "?+", "{", \
1532 "*", "*?", "+", "+?", "?", "??", \
1533 "{", "{", "{", \
1534 "*+","++", "?+", "{", \
1535 "*", "*?", "+", "+?", "?", "??", \
1536 "{", "{", "{", \
1537 "*+","++", "?+", "{", \
1538 "*", "*?", "+", "+?", "?", "??", \
1539 "{", "{", "{", \
1540 "*+","++", "?+", "{", \
1541 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1542 "*+","++", "?+", "{", \
1543 "*", "*?", "+", "+?", "?", "??", "{", "{", \
1544 "class", "nclass", "xclass", "Ref", "Refi", \
1545 "Recurse", "Callout", \
1546 "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
1547 "AssertB", "AssertB not", "Reverse", \
1548 "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond", \
1549 "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def", \
1550 "Brazero", "Braminzero", \
1551 "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \
1552 "*THEN", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT", \
1553 "Close", "Skip zero"
1554
1555
1556 /* This macro defines the length of fixed length operations in the compiled
1557 regex. The lengths are used when searching for specific things, and also in the
1558 debugging printing of a compiled regex. We use a macro so that it can be
1559 defined close to the definitions of the opcodes themselves.
1560
1561 As things have been extended, some of these are no longer fixed lenths, but are
1562 minima instead. For example, the length of a single-character repeat may vary
1563 in UTF-8 mode. The code that uses this table must know about such things. */
1564
1565 #define OP_LENGTHS \
1566 1, /* End */ \
1567 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
1568 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
1569 1, 1, 1, /* Any, AllAny, Anybyte */ \
1570 3, 3, /* \P, \p */ \
1571 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1572 1, /* \X */ \
1573 1, 1, 1, 1, 1, 1, /* \Z, \z, ^, ^M, $, $M */ \
1574 2, /* Char - the minimum length */ \
1575 2, /* Chari - the minimum length */ \
1576 2, /* not */ \
1577 2, /* noti */ \
1578 /* Positive single-char repeats ** These are */ \
1579 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
1580 4, 4, 4, /* upto, minupto, exact ** mode */ \
1581 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
1582 2, 2, 2, 2, 2, 2, /* *I, *?I, +I, +?I, ?I, ??I ** UTF-8 */ \
1583 4, 4, 4, /* upto I, minupto I, exact I */ \
1584 2, 2, 2, 4, /* *+I, ++I, ?+I, upto+I */ \
1585 /* Negative single-char repeats - only for chars < 256 */ \
1586 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
1587 4, 4, 4, /* NOT upto, minupto, exact */ \
1588 2, 2, 2, 4, /* Possessive NOT *, +, ?, upto */ \
1589 2, 2, 2, 2, 2, 2, /* NOT *I, *?I, +I, +?I, ?I, ??I */ \
1590 4, 4, 4, /* NOT upto I, minupto I, exact I */ \
1591 2, 2, 2, 4, /* Possessive NOT *I, +I, ?I, upto I */ \
1592 /* Positive type repeats */ \
1593 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
1594 4, 4, 4, /* Type upto, minupto, exact */ \
1595 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
1596 /* Character class & ref repeats */ \
1597 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1598 5, 5, /* CRRANGE, CRMINRANGE */ \
1599 33, /* CLASS */ \
1600 33, /* NCLASS */ \
1601 0, /* XCLASS - variable length */ \
1602 3, /* REF */ \
1603 3, /* REFI */ \
1604 1+LINK_SIZE, /* RECURSE */ \
1605 2+2*LINK_SIZE, /* CALLOUT */ \
1606 1+LINK_SIZE, /* Alt */ \
1607 1+LINK_SIZE, /* Ket */ \
1608 1+LINK_SIZE, /* KetRmax */ \
1609 1+LINK_SIZE, /* KetRmin */ \
1610 1+LINK_SIZE, /* Assert */ \
1611 1+LINK_SIZE, /* Assert not */ \
1612 1+LINK_SIZE, /* Assert behind */ \
1613 1+LINK_SIZE, /* Assert behind not */ \
1614 1+LINK_SIZE, /* Reverse */ \
1615 1+LINK_SIZE, /* ONCE */ \
1616 1+LINK_SIZE, /* BRA */ \
1617 3+LINK_SIZE, /* CBRA */ \
1618 1+LINK_SIZE, /* COND */ \
1619 1+LINK_SIZE, /* SBRA */ \
1620 3+LINK_SIZE, /* SCBRA */ \
1621 1+LINK_SIZE, /* SCOND */ \
1622 3, 3, /* CREF, NCREF */ \
1623 3, 3, /* RREF, NRREF */ \
1624 1, /* DEF */ \
1625 1, 1, /* BRAZERO, BRAMINZERO */ \
1626 3, 1, 3, /* MARK, PRUNE, PRUNE_ARG */ \
1627 1, 3, /* SKIP, SKIP_ARG */ \
1628 1+LINK_SIZE, 3+LINK_SIZE, /* THEN, THEN_ARG */ \
1629 1, 1, 1, 3, 1 /* COMMIT, FAIL, ACCEPT, CLOSE, SKIPZERO */ \
1630
1631 /* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion"
1632 condition. */
1633
1634 #define RREF_ANY 0xffff
1635
1636 /* Compile time error code numbers. They are given names so that they can more
1637 easily be tracked. When a new number is added, the table called eint in
1638 pcreposix.c must be updated. */
1639
1640 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
1641 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
1642 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
1643 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1644 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1645 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1646 ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68,
1647 ERRCOUNT };
1648
1649 /* The real format of the start of the pcre block; the index of names and the
1650 code vector run on as long as necessary after the end. We store an explicit
1651 offset to the name table so that if a regex is compiled on one host, saved, and
1652 then run on another where the size of pointers is different, all might still
1653 be well. For the case of compiled-on-4 and run-on-8, we include an extra
1654 pointer that is always NULL. For future-proofing, a few dummy fields were
1655 originally included - even though you can never get this planning right - but
1656 there is only one left now.
1657
1658 NOTE NOTE NOTE:
1659 Because people can now save and re-use compiled patterns, any additions to this
1660 structure should be made at the end, and something earlier (e.g. a new
1661 flag in the options or one of the dummy fields) should indicate that the new
1662 fields are present. Currently PCRE always sets the dummy fields to zero.
1663 NOTE NOTE NOTE
1664 */
1665
1666 typedef struct real_pcre {
1667 pcre_uint32 magic_number;
1668 pcre_uint32 size; /* Total that was malloced */
1669 pcre_uint32 options; /* Public options */
1670 pcre_uint16 flags; /* Private flags */
1671 pcre_uint16 dummy1; /* For future use */
1672 pcre_uint16 top_bracket;
1673 pcre_uint16 top_backref;
1674 pcre_uint16 first_byte;
1675 pcre_uint16 req_byte;
1676 pcre_uint16 name_table_offset; /* Offset to name table that follows */
1677 pcre_uint16 name_entry_size; /* Size of any name items */
1678 pcre_uint16 name_count; /* Number of name items */
1679 pcre_uint16 ref_count; /* Reference count */
1680
1681 const unsigned char *tables; /* Pointer to tables or NULL for std */
1682 const unsigned char *nullpad; /* NULL padding */
1683 } real_pcre;
1684
1685 /* The format of the block used to store data from pcre_study(). The same
1686 remark (see NOTE above) about extending this structure applies. */
1687
1688 typedef struct pcre_study_data {
1689 pcre_uint32 size; /* Total that was malloced */
1690 pcre_uint32 flags; /* Private flags */
1691 uschar start_bits[32]; /* Starting char bits */
1692 pcre_uint32 minlength; /* Minimum subject length */
1693 } pcre_study_data;
1694
1695 /* Structure for building a chain of open capturing subpatterns during
1696 compiling, so that instructions to close them can be compiled when (*ACCEPT) is
1697 encountered. This is also used to identify subpatterns that contain recursive
1698 back references to themselves, so that they can be made atomic. */
1699
1700 typedef struct open_capitem {
1701 struct open_capitem *next; /* Chain link */
1702 pcre_uint16 number; /* Capture number */
1703 pcre_uint16 flag; /* Set TRUE if recursive back ref */
1704 } open_capitem;
1705
1706 /* Structure for passing "static" information around between the functions
1707 doing the compiling, so that they are thread-safe. */
1708
1709 typedef struct compile_data {
1710 const uschar *lcc; /* Points to lower casing table */
1711 const uschar *fcc; /* Points to case-flipping table */
1712 const uschar *cbits; /* Points to character type table */
1713 const uschar *ctypes; /* Points to table of type maps */
1714 const uschar *start_workspace;/* The start of working space */
1715 const uschar *start_code; /* The start of the compiled code */
1716 const uschar *start_pattern; /* The start of the pattern */
1717 const uschar *end_pattern; /* The end of the pattern */
1718 open_capitem *open_caps; /* Chain of open capture items */
1719 uschar *hwm; /* High watermark of workspace */
1720 uschar *name_table; /* The name/number table */
1721 int names_found; /* Number of entries so far */
1722 int name_entry_size; /* Size of each entry */
1723 int bracount; /* Count of capturing parens as we compile */
1724 int final_bracount; /* Saved value after first pass */
1725 int top_backref; /* Maximum back reference */
1726 unsigned int backref_map; /* Bitmap of low back refs */
1727 int external_options; /* External (initial) options */
1728 int external_flags; /* External flag bits to be set */
1729 int req_varyopt; /* "After variable item" flag for reqbyte */
1730 BOOL had_accept; /* (*ACCEPT) encountered */
1731 BOOL check_lookbehind; /* Lookbehinds need later checking */
1732 int nltype; /* Newline type */
1733 int nllen; /* Newline string length */
1734 uschar nl[4]; /* Newline string when fixed length */
1735 } compile_data;
1736
1737 /* Structure for maintaining a chain of pointers to the currently incomplete
1738 branches, for testing for left recursion. */
1739
1740 typedef struct branch_chain {
1741 struct branch_chain *outer;
1742 uschar *current_branch;
1743 } branch_chain;
1744
1745 /* Structure for items in a linked list that represents an explicit recursive
1746 call within the pattern. */
1747
1748 typedef struct recursion_info {
1749 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
1750 int group_num; /* Number of group that was called */
1751 const uschar *after_call; /* "Return value": points after the call in the expr */
1752 int *offset_save; /* Pointer to start of saved offsets */
1753 int saved_max; /* Number of saved offsets */
1754 int save_offset_top; /* Current value of offset_top */
1755 } recursion_info;
1756
1757 /* Structure for building a chain of data for holding the values of the subject
1758 pointer at the start of each subpattern, so as to detect when an empty string
1759 has been matched by a subpattern - to break infinite loops. */
1760
1761 typedef struct eptrblock {
1762 struct eptrblock *epb_prev;
1763 USPTR epb_saved_eptr;
1764 } eptrblock;
1765
1766
1767 /* Structure for passing "static" information around between the functions
1768 doing traditional NFA matching, so that they are thread-safe. */
1769
1770 typedef struct match_data {
1771 unsigned long int match_call_count; /* As it says */
1772 unsigned long int match_limit; /* As it says */
1773 unsigned long int match_limit_recursion; /* As it says */
1774 int *offset_vector; /* Offset vector */
1775 int offset_end; /* One past the end */
1776 int offset_max; /* The maximum usable for return data */
1777 int nltype; /* Newline type */
1778 int nllen; /* Newline string length */
1779 int name_count; /* Number of names in name table */
1780 int name_entry_size; /* Size of entry in names table */
1781 uschar *name_table; /* Table of names */
1782 uschar nl[4]; /* Newline string when fixed */
1783 const uschar *lcc; /* Points to lower casing table */
1784 const uschar *ctypes; /* Points to table of type maps */
1785 BOOL offset_overflow; /* Set if too many extractions */
1786 BOOL notbol; /* NOTBOL flag */
1787 BOOL noteol; /* NOTEOL flag */
1788 BOOL utf8; /* UTF8 flag */
1789 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
1790 BOOL use_ucp; /* PCRE_UCP flag */
1791 BOOL endonly; /* Dollar not before final \n */
1792 BOOL notempty; /* Empty string match not wanted */
1793 BOOL notempty_atstart; /* Empty string match at start not wanted */
1794 BOOL hitend; /* Hit the end of the subject at some point */
1795 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
1796 const uschar *start_code; /* For use when recursing */
1797 USPTR start_subject; /* Start of the subject string */
1798 USPTR end_subject; /* End of the subject string */
1799 USPTR start_match_ptr; /* Start of matched string */
1800 USPTR end_match_ptr; /* Subject position at end match */
1801 USPTR start_used_ptr; /* Earliest consulted character */
1802 int partial; /* PARTIAL options */
1803 int end_offset_top; /* Highwater mark at end of match */
1804 int capture_last; /* Most recent capture number */
1805 int start_offset; /* The start offset value */
1806 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1807 int eptrn; /* Next free eptrblock */
1808 recursion_info *recursive; /* Linked list of recursion data */
1809 void *callout_data; /* To pass back to callouts */
1810 const uschar *mark; /* Mark pointer to pass back */
1811 } match_data;
1812
1813 /* A similar structure is used for the same purpose by the DFA matching
1814 functions. */
1815
1816 typedef struct dfa_match_data {
1817 const uschar *start_code; /* Start of the compiled pattern */
1818 const uschar *start_subject; /* Start of the subject string */
1819 const uschar *end_subject; /* End of subject string */
1820 const uschar *start_used_ptr; /* Earliest consulted character */
1821 const uschar *tables; /* Character tables */
1822 int start_offset; /* The start offset value */
1823 int moptions; /* Match options */
1824 int poptions; /* Pattern options */
1825 int nltype; /* Newline type */
1826 int nllen; /* Newline string length */
1827 uschar nl[4]; /* Newline string when fixed */
1828 void *callout_data; /* To pass back to callouts */
1829 } dfa_match_data;
1830
1831 /* Bit definitions for entries in the pcre_ctypes table. */
1832
1833 #define ctype_space 0x01
1834 #define ctype_letter 0x02
1835 #define ctype_digit 0x04
1836 #define ctype_xdigit 0x08
1837 #define ctype_word 0x10 /* alphanumeric or '_' */
1838 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1839
1840 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1841 of bits for a class map. Some classes are built by combining these tables. */
1842
1843 #define cbit_space 0 /* [:space:] or \s */
1844 #define cbit_xdigit 32 /* [:xdigit:] */
1845 #define cbit_digit 64 /* [:digit:] or \d */
1846 #define cbit_upper 96 /* [:upper:] */
1847 #define cbit_lower 128 /* [:lower:] */
1848 #define cbit_word 160 /* [:word:] or \w */
1849 #define cbit_graph 192 /* [:graph:] */
1850 #define cbit_print 224 /* [:print:] */
1851 #define cbit_punct 256 /* [:punct:] */
1852 #define cbit_cntrl 288 /* [:cntrl:] */
1853 #define cbit_length 320 /* Length of the cbits table */
1854
1855 /* Offsets of the various tables from the base tables pointer, and
1856 total length. */
1857
1858 #define lcc_offset 0
1859 #define fcc_offset 256
1860 #define cbits_offset 512
1861 #define ctypes_offset (cbits_offset + cbit_length)
1862 #define tables_length (ctypes_offset + 256)
1863
1864 /* Layout of the UCP type table that translates property names into types and
1865 codes. Each entry used to point directly to a name, but to reduce the number of
1866 relocations in shared libraries, it now has an offset into a single string
1867 instead. */
1868
1869 typedef struct {
1870 pcre_uint16 name_offset;
1871 pcre_uint16 type;
1872 pcre_uint16 value;
1873 } ucp_type_table;
1874
1875
1876 /* Internal shared data tables. These are tables that are used by more than one
1877 of the exported public functions. They have to be "external" in the C sense,
1878 but are not part of the PCRE public API. The data for these tables is in the
1879 pcre_tables.c module. */
1880
1881 extern const int _pcre_utf8_table1[];
1882 extern const int _pcre_utf8_table2[];
1883 extern const int _pcre_utf8_table3[];
1884 extern const uschar _pcre_utf8_table4[];
1885
1886 extern const int _pcre_utf8_table1_size;
1887
1888 extern const char _pcre_utt_names[];
1889 extern const ucp_type_table _pcre_utt[];
1890 extern const int _pcre_utt_size;
1891
1892 extern const uschar _pcre_default_tables[];
1893
1894 extern const uschar _pcre_OP_lengths[];
1895
1896
1897 /* Internal shared functions. These are functions that are used by more than
1898 one of the exported public functions. They have to be "external" in the C
1899 sense, but are not part of the PCRE public API. */
1900
1901 extern const uschar *_pcre_find_bracket(const uschar *, BOOL, int);
1902 extern BOOL _pcre_is_newline(USPTR, int, USPTR, int *, BOOL);
1903 extern int _pcre_ord2utf8(int, uschar *);
1904 extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1905 const pcre_study_data *, pcre_study_data *);
1906 extern int _pcre_valid_utf8(USPTR, int, int *);
1907 extern BOOL _pcre_was_newline(USPTR, int, USPTR, int *, BOOL);
1908 extern BOOL _pcre_xclass(int, const uschar *);
1909
1910
1911 /* Unicode character database (UCD) */
1912
1913 typedef struct {
1914 uschar script;
1915 uschar chartype;
1916 pcre_int32 other_case;
1917 } ucd_record;
1918
1919 extern const ucd_record _pcre_ucd_records[];
1920 extern const uschar _pcre_ucd_stage1[];
1921 extern const pcre_uint16 _pcre_ucd_stage2[];
1922 extern const int _pcre_ucp_gentype[];
1923
1924
1925 /* UCD access macros */
1926
1927 #define UCD_BLOCK_SIZE 128
1928 #define GET_UCD(ch) (_pcre_ucd_records + \
1929 _pcre_ucd_stage2[_pcre_ucd_stage1[(ch) / UCD_BLOCK_SIZE] * \
1930 UCD_BLOCK_SIZE + (ch) % UCD_BLOCK_SIZE])
1931
1932 #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
1933 #define UCD_SCRIPT(ch) GET_UCD(ch)->script
1934 #define UCD_CATEGORY(ch) _pcre_ucp_gentype[UCD_CHARTYPE(ch)]
1935 #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case)
1936
1937 #endif
1938
1939 /* End of pcre_internal.h */

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