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Revision 392 - (show annotations) (download)
Tue Mar 17 21:30:30 2009 UTC (5 years, 5 months ago) by ph10
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Update after detrailing for a test release.

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) 1997-2009 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 DEBUG to get debugging output on stdout. */
49
50 #if 0
51 #define 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 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
62 inline, and there are *still* stupid compilers about that don't like indented
63 pre-processor statements, or at least there were when I first wrote this. After
64 all, it had only been about 10 years then...
65
66 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
67 be absolutely sure we get our version. */
68
69 #undef DPRINTF
70 #ifdef DEBUG
71 #define DPRINTF(p) printf p
72 #else
73 #define DPRINTF(p) /* Nothing */
74 #endif
75
76
77 /* Standard C headers plus the external interface definition. The only time
78 setjmp and stdarg are used is when NO_RECURSE is set. */
79
80 #include <ctype.h>
81 #include <limits.h>
82 #include <setjmp.h>
83 #include <stdarg.h>
84 #include <stddef.h>
85 #include <stdio.h>
86 #include <stdlib.h>
87 #include <string.h>
88
89 /* When compiling a DLL for Windows, the exported symbols have to be declared
90 using some MS magic. I found some useful information on this web page:
91 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
92 information there, using __declspec(dllexport) without "extern" we have a
93 definition; with "extern" we have a declaration. The settings here override the
94 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
95 which is all that is needed for applications (they just import the symbols). We
96 use:
97
98 PCRE_EXP_DECL for declarations
99 PCRE_EXP_DEFN for definitions of exported functions
100 PCRE_EXP_DATA_DEFN for definitions of exported variables
101
102 The reason for the two DEFN macros is that in non-Windows environments, one
103 does not want to have "extern" before variable definitions because it leads to
104 compiler warnings. So we distinguish between functions and variables. In
105 Windows, the two should always be the same.
106
107 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
108 which is an application, but needs to import this file in order to "peek" at
109 internals, can #include pcre.h first to get an application's-eye view.
110
111 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
112 special-purpose environments) might want to stick other stuff in front of
113 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
114 PCRE_EXP_DATA_DEFN only if they are not already set. */
115
116 #ifndef PCRE_EXP_DECL
117 # ifdef _WIN32
118 # ifndef PCRE_STATIC
119 # define PCRE_EXP_DECL extern __declspec(dllexport)
120 # define PCRE_EXP_DEFN __declspec(dllexport)
121 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
122 # else
123 # define PCRE_EXP_DECL extern
124 # define PCRE_EXP_DEFN
125 # define PCRE_EXP_DATA_DEFN
126 # endif
127 # else
128 # ifdef __cplusplus
129 # define PCRE_EXP_DECL extern "C"
130 # else
131 # define PCRE_EXP_DECL extern
132 # endif
133 # ifndef PCRE_EXP_DEFN
134 # define PCRE_EXP_DEFN PCRE_EXP_DECL
135 # endif
136 # ifndef PCRE_EXP_DATA_DEFN
137 # define PCRE_EXP_DATA_DEFN
138 # endif
139 # endif
140 #endif
141
142 /* When compiling with the MSVC compiler, it is sometimes necessary to include
143 a "calling convention" before exported function names. (This is secondhand
144 information; I know nothing about MSVC myself). For example, something like
145
146 void __cdecl function(....)
147
148 might be needed. In order so make this easy, all the exported functions have
149 PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
150 set, we ensure here that it has no effect. */
151
152 #ifndef PCRE_CALL_CONVENTION
153 #define PCRE_CALL_CONVENTION
154 #endif
155
156 /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
157 cannot determine these outside the compilation (e.g. by running a program as
158 part of "configure") because PCRE is often cross-compiled for use on other
159 systems. Instead we make use of the maximum sizes that are available at
160 preprocessor time in standard C environments. */
161
162 #if USHRT_MAX == 65535
163 typedef unsigned short pcre_uint16;
164 typedef short pcre_int16;
165 #elif UINT_MAX == 65535
166 typedef unsigned int pcre_uint16;
167 typedef int pcre_int16;
168 #else
169 #error Cannot determine a type for 16-bit unsigned integers
170 #endif
171
172 #if UINT_MAX == 4294967295
173 typedef unsigned int pcre_uint32;
174 typedef int pcre_int32;
175 #elif ULONG_MAX == 4294967295
176 typedef unsigned long int pcre_uint32;
177 typedef long int pcre_int32;
178 #else
179 #error Cannot determine a type for 32-bit unsigned integers
180 #endif
181
182 /* All character handling must be done as unsigned characters. Otherwise there
183 are problems with top-bit-set characters and functions such as isspace().
184 However, we leave the interface to the outside world as char *, because that
185 should make things easier for callers. We define a short type for unsigned char
186 to save lots of typing. I tried "uchar", but it causes problems on Digital
187 Unix, where it is defined in sys/types, so use "uschar" instead. */
188
189 typedef unsigned char uschar;
190
191 /* This is an unsigned int value that no character can ever have. UTF-8
192 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
193 0x0010ffff). */
194
195 #define NOTACHAR 0xffffffff
196
197 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
198 "any" and "anycrlf" at present). The following macros are used to package up
199 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
200 modules to indicate in which datablock the parameters exist, and what the
201 start/end of string field names are. */
202
203 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
204 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
205 #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
206
207 /* This macro checks for a newline at the given position */
208
209 #define IS_NEWLINE(p) \
210 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
211 ((p) < NLBLOCK->PSEND && \
212 _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\
213 utf8)) \
214 : \
215 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
216 (p)[0] == NLBLOCK->nl[0] && \
217 (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
218 ) \
219 )
220
221 /* This macro checks for a newline immediately preceding the given position */
222
223 #define WAS_NEWLINE(p) \
224 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
225 ((p) > NLBLOCK->PSSTART && \
226 _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
227 &(NLBLOCK->nllen), utf8)) \
228 : \
229 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
230 (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
231 (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
232 ) \
233 )
234
235 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
236 with a custom type. This makes it possible, for example, to allow pcre_exec()
237 to process subject strings that are discontinuous by using a smart pointer
238 class. It must always be possible to inspect all of the subject string in
239 pcre_exec() because of the way it backtracks. Two macros are required in the
240 normal case, for sign-unspecified and unsigned char pointers. The former is
241 used for the external interface and appears in pcre.h, which is why its name
242 must begin with PCRE_. */
243
244 #ifdef CUSTOM_SUBJECT_PTR
245 #define PCRE_SPTR CUSTOM_SUBJECT_PTR
246 #define USPTR CUSTOM_SUBJECT_PTR
247 #else
248 #define PCRE_SPTR const char *
249 #define USPTR const unsigned char *
250 #endif
251
252
253
254 /* Include the public PCRE header and the definitions of UCP character property
255 values. */
256
257 #include "pcre.h"
258 #include "ucp.h"
259
260 /* When compiling for use with the Virtual Pascal compiler, these functions
261 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
262 option on the command line. */
263
264 #ifdef VPCOMPAT
265 #define strlen(s) _strlen(s)
266 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
267 #define memcmp(s,c,n) _memcmp(s,c,n)
268 #define memcpy(d,s,n) _memcpy(d,s,n)
269 #define memmove(d,s,n) _memmove(d,s,n)
270 #define memset(s,c,n) _memset(s,c,n)
271 #else /* VPCOMPAT */
272
273 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
274 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
275 is set. Otherwise, include an emulating function for those systems that have
276 neither (there some non-Unix environments where this is the case). */
277
278 #ifndef HAVE_MEMMOVE
279 #undef memmove /* some systems may have a macro */
280 #ifdef HAVE_BCOPY
281 #define memmove(a, b, c) bcopy(b, a, c)
282 #else /* HAVE_BCOPY */
283 static void *
284 pcre_memmove(void *d, const void *s, size_t n)
285 {
286 size_t i;
287 unsigned char *dest = (unsigned char *)d;
288 const unsigned char *src = (const unsigned char *)s;
289 if (dest > src)
290 {
291 dest += n;
292 src += n;
293 for (i = 0; i < n; ++i) *(--dest) = *(--src);
294 return (void *)dest;
295 }
296 else
297 {
298 for (i = 0; i < n; ++i) *dest++ = *src++;
299 return (void *)(dest - n);
300 }
301 }
302 #define memmove(a, b, c) pcre_memmove(a, b, c)
303 #endif /* not HAVE_BCOPY */
304 #endif /* not HAVE_MEMMOVE */
305 #endif /* not VPCOMPAT */
306
307
308 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
309 in big-endian order) by default. These are used, for example, to link from the
310 start of a subpattern to its alternatives and its end. The use of 2 bytes per
311 offset limits the size of the compiled regex to around 64K, which is big enough
312 for almost everybody. However, I received a request for an even bigger limit.
313 For this reason, and also to make the code easier to maintain, the storing and
314 loading of offsets from the byte string is now handled by the macros that are
315 defined here.
316
317 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
318 the config.h file, but can be overridden by using -D on the command line. This
319 is automated on Unix systems via the "configure" command. */
320
321 #if LINK_SIZE == 2
322
323 #define PUT(a,n,d) \
324 (a[n] = (d) >> 8), \
325 (a[(n)+1] = (d) & 255)
326
327 #define GET(a,n) \
328 (((a)[n] << 8) | (a)[(n)+1])
329
330 #define MAX_PATTERN_SIZE (1 << 16)
331
332
333 #elif LINK_SIZE == 3
334
335 #define PUT(a,n,d) \
336 (a[n] = (d) >> 16), \
337 (a[(n)+1] = (d) >> 8), \
338 (a[(n)+2] = (d) & 255)
339
340 #define GET(a,n) \
341 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
342
343 #define MAX_PATTERN_SIZE (1 << 24)
344
345
346 #elif LINK_SIZE == 4
347
348 #define PUT(a,n,d) \
349 (a[n] = (d) >> 24), \
350 (a[(n)+1] = (d) >> 16), \
351 (a[(n)+2] = (d) >> 8), \
352 (a[(n)+3] = (d) & 255)
353
354 #define GET(a,n) \
355 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
356
357 #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */
358
359
360 #else
361 #error LINK_SIZE must be either 2, 3, or 4
362 #endif
363
364
365 /* Convenience macro defined in terms of the others */
366
367 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
368
369
370 /* PCRE uses some other 2-byte quantities that do not change when the size of
371 offsets changes. There are used for repeat counts and for other things such as
372 capturing parenthesis numbers in back references. */
373
374 #define PUT2(a,n,d) \
375 a[n] = (d) >> 8; \
376 a[(n)+1] = (d) & 255
377
378 #define GET2(a,n) \
379 (((a)[n] << 8) | (a)[(n)+1])
380
381 #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2
382
383
384 /* When UTF-8 encoding is being used, a character is no longer just a single
385 byte. The macros for character handling generate simple sequences when used in
386 byte-mode, and more complicated ones for UTF-8 characters. BACKCHAR should
387 never be called in byte mode. To make sure it can never even appear when UTF-8
388 support is omitted, we don't even define it. */
389
390 #ifndef SUPPORT_UTF8
391 #define GETCHAR(c, eptr) c = *eptr;
392 #define GETCHARTEST(c, eptr) c = *eptr;
393 #define GETCHARINC(c, eptr) c = *eptr++;
394 #define GETCHARINCTEST(c, eptr) c = *eptr++;
395 #define GETCHARLEN(c, eptr, len) c = *eptr;
396 /* #define BACKCHAR(eptr) */
397
398 #else /* SUPPORT_UTF8 */
399
400 /* Get the next UTF-8 character, not advancing the pointer. This is called when
401 we know we are in UTF-8 mode. */
402
403 #define GETCHAR(c, eptr) \
404 c = *eptr; \
405 if (c >= 0xc0) \
406 { \
407 int gcii; \
408 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
409 int gcss = 6*gcaa; \
410 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
411 for (gcii = 1; gcii <= gcaa; gcii++) \
412 { \
413 gcss -= 6; \
414 c |= (eptr[gcii] & 0x3f) << gcss; \
415 } \
416 }
417
418 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
419 pointer. */
420
421 #define GETCHARTEST(c, eptr) \
422 c = *eptr; \
423 if (utf8 && c >= 0xc0) \
424 { \
425 int gcii; \
426 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
427 int gcss = 6*gcaa; \
428 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
429 for (gcii = 1; gcii <= gcaa; gcii++) \
430 { \
431 gcss -= 6; \
432 c |= (eptr[gcii] & 0x3f) << gcss; \
433 } \
434 }
435
436 /* Get the next UTF-8 character, advancing the pointer. This is called when we
437 know we are in UTF-8 mode. */
438
439 #define GETCHARINC(c, eptr) \
440 c = *eptr++; \
441 if (c >= 0xc0) \
442 { \
443 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
444 int gcss = 6*gcaa; \
445 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
446 while (gcaa-- > 0) \
447 { \
448 gcss -= 6; \
449 c |= (*eptr++ & 0x3f) << gcss; \
450 } \
451 }
452
453 /* Get the next character, testing for UTF-8 mode, and advancing the pointer */
454
455 #define GETCHARINCTEST(c, eptr) \
456 c = *eptr++; \
457 if (utf8 && c >= 0xc0) \
458 { \
459 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
460 int gcss = 6*gcaa; \
461 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
462 while (gcaa-- > 0) \
463 { \
464 gcss -= 6; \
465 c |= (*eptr++ & 0x3f) << gcss; \
466 } \
467 }
468
469 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
470 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
471
472 #define GETCHARLEN(c, eptr, len) \
473 c = *eptr; \
474 if (c >= 0xc0) \
475 { \
476 int gcii; \
477 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
478 int gcss = 6*gcaa; \
479 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
480 for (gcii = 1; gcii <= gcaa; gcii++) \
481 { \
482 gcss -= 6; \
483 c |= (eptr[gcii] & 0x3f) << gcss; \
484 } \
485 len += gcaa; \
486 }
487
488 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
489 pointer, incrementing length if there are extra bytes. This is called when we
490 know we are in UTF-8 mode. */
491
492 #define GETCHARLENTEST(c, eptr, len) \
493 c = *eptr; \
494 if (utf8 && c >= 0xc0) \
495 { \
496 int gcii; \
497 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
498 int gcss = 6*gcaa; \
499 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
500 for (gcii = 1; gcii <= gcaa; gcii++) \
501 { \
502 gcss -= 6; \
503 c |= (eptr[gcii] & 0x3f) << gcss; \
504 } \
505 len += gcaa; \
506 }
507
508 /* If the pointer is not at the start of a character, move it back until
509 it is. This is called only in UTF-8 mode - we don't put a test within the macro
510 because almost all calls are already within a block of UTF-8 only code. */
511
512 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
513
514 #endif
515
516
517 /* In case there is no definition of offsetof() provided - though any proper
518 Standard C system should have one. */
519
520 #ifndef offsetof
521 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
522 #endif
523
524
525 /* These are the public options that can change during matching. */
526
527 #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
528
529 /* Private flags containing information about the compiled regex. They used to
530 live at the top end of the options word, but that got almost full, so now they
531 are in a 16-bit flags word. */
532
533 #define PCRE_NOPARTIAL 0x0001 /* can't use partial with this regex */
534 #define PCRE_FIRSTSET 0x0002 /* first_byte is set */
535 #define PCRE_REQCHSET 0x0004 /* req_byte is set */
536 #define PCRE_STARTLINE 0x0008 /* start after \n for multiline */
537 #define PCRE_JCHANGED 0x0010 /* j option used in regex */
538 #define PCRE_HASCRORLF 0x0020 /* explicit \r or \n in pattern */
539
540 /* Options for the "extra" block produced by pcre_study(). */
541
542 #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
543
544 /* Masks for identifying the public options that are permitted at compile
545 time, run time, or study time, respectively. */
546
547 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
548 PCRE_NEWLINE_ANYCRLF)
549
550 #define PUBLIC_COMPILE_OPTIONS \
551 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
552 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
553 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
554 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
555 PCRE_JAVASCRIPT_COMPAT)
556
557 #define PUBLIC_EXEC_OPTIONS \
558 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
559 PCRE_PARTIAL|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
560 PCRE_NO_START_OPTIMIZE)
561
562 #define PUBLIC_DFA_EXEC_OPTIONS \
563 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
564 PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS| \
565 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
566
567 #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
568
569 /* Magic number to provide a small check against being handed junk. Also used
570 to detect whether a pattern was compiled on a host of different endianness. */
571
572 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
573
574 /* Negative values for the firstchar and reqchar variables */
575
576 #define REQ_UNSET (-2)
577 #define REQ_NONE (-1)
578
579 /* The maximum remaining length of subject we are prepared to search for a
580 req_byte match. */
581
582 #define REQ_BYTE_MAX 1000
583
584 /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
585 variable-length repeat, or a anything other than literal characters. */
586
587 #define REQ_CASELESS 0x0100 /* indicates caselessness */
588 #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
589
590 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
591 environments where these macros are defined elsewhere. Unfortunately, there
592 is no way to do the same for the typedef. */
593
594 typedef int BOOL;
595
596 #ifndef FALSE
597 #define FALSE 0
598 #define TRUE 1
599 #endif
600
601 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
602 character constants like '*' because the compiler would emit their EBCDIC code,
603 which is different from their ASCII/UTF-8 code. Instead we define macros for
604 the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
605 is enabled. When UTF-8 support is not enabled, the definitions use character
606 literals. Both character and string versions of each character are needed, and
607 there are some longer strings as well.
608
609 This means that, on EBCDIC platforms, the PCRE library can handle either
610 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
611 would need different lookups depending on whether PCRE_UTF8 was set or not.
612 This would make it impossible to use characters in switch/case statements,
613 which would reduce performance. For a theoretical use (which nobody has asked
614 for) in a minority area (EBCDIC platforms), this is not sensible. Any
615 application that did need both could compile two versions of the library, using
616 macros to give the functions distinct names. */
617
618 #ifndef SUPPORT_UTF8
619
620 /* UTF-8 support is not enabled; use the platform-dependent character literals
621 so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
622
623 #define CHAR_HT '\t'
624 #define CHAR_VT '\v'
625 #define CHAR_FF '\f'
626 #define CHAR_CR '\r'
627 #define CHAR_NL '\n'
628 #define CHAR_BS '\b'
629 #define CHAR_BEL '\a'
630 #ifdef EBCDIC
631 #define CHAR_ESC '\047'
632 #define CHAR_DEL '\007'
633 #else
634 #define CHAR_ESC '\033'
635 #define CHAR_DEL '\177'
636 #endif
637
638 #define CHAR_SPACE ' '
639 #define CHAR_EXCLAMATION_MARK '!'
640 #define CHAR_QUOTATION_MARK '"'
641 #define CHAR_NUMBER_SIGN '#'
642 #define CHAR_DOLLAR_SIGN '$'
643 #define CHAR_PERCENT_SIGN '%'
644 #define CHAR_AMPERSAND '&'
645 #define CHAR_APOSTROPHE '\''
646 #define CHAR_LEFT_PARENTHESIS '('
647 #define CHAR_RIGHT_PARENTHESIS ')'
648 #define CHAR_ASTERISK '*'
649 #define CHAR_PLUS '+'
650 #define CHAR_COMMA ','
651 #define CHAR_MINUS '-'
652 #define CHAR_DOT '.'
653 #define CHAR_SLASH '/'
654 #define CHAR_0 '0'
655 #define CHAR_1 '1'
656 #define CHAR_2 '2'
657 #define CHAR_3 '3'
658 #define CHAR_4 '4'
659 #define CHAR_5 '5'
660 #define CHAR_6 '6'
661 #define CHAR_7 '7'
662 #define CHAR_8 '8'
663 #define CHAR_9 '9'
664 #define CHAR_COLON ':'
665 #define CHAR_SEMICOLON ';'
666 #define CHAR_LESS_THAN_SIGN '<'
667 #define CHAR_EQUALS_SIGN '='
668 #define CHAR_GREATER_THAN_SIGN '>'
669 #define CHAR_QUESTION_MARK '?'
670 #define CHAR_COMMERCIAL_AT '@'
671 #define CHAR_A 'A'
672 #define CHAR_B 'B'
673 #define CHAR_C 'C'
674 #define CHAR_D 'D'
675 #define CHAR_E 'E'
676 #define CHAR_F 'F'
677 #define CHAR_G 'G'
678 #define CHAR_H 'H'
679 #define CHAR_I 'I'
680 #define CHAR_J 'J'
681 #define CHAR_K 'K'
682 #define CHAR_L 'L'
683 #define CHAR_M 'M'
684 #define CHAR_N 'N'
685 #define CHAR_O 'O'
686 #define CHAR_P 'P'
687 #define CHAR_Q 'Q'
688 #define CHAR_R 'R'
689 #define CHAR_S 'S'
690 #define CHAR_T 'T'
691 #define CHAR_U 'U'
692 #define CHAR_V 'V'
693 #define CHAR_W 'W'
694 #define CHAR_X 'X'
695 #define CHAR_Y 'Y'
696 #define CHAR_Z 'Z'
697 #define CHAR_LEFT_SQUARE_BRACKET '['
698 #define CHAR_BACKSLASH '\\'
699 #define CHAR_RIGHT_SQUARE_BRACKET ']'
700 #define CHAR_CIRCUMFLEX_ACCENT '^'
701 #define CHAR_UNDERSCORE '_'
702 #define CHAR_GRAVE_ACCENT '`'
703 #define CHAR_a 'a'
704 #define CHAR_b 'b'
705 #define CHAR_c 'c'
706 #define CHAR_d 'd'
707 #define CHAR_e 'e'
708 #define CHAR_f 'f'
709 #define CHAR_g 'g'
710 #define CHAR_h 'h'
711 #define CHAR_i 'i'
712 #define CHAR_j 'j'
713 #define CHAR_k 'k'
714 #define CHAR_l 'l'
715 #define CHAR_m 'm'
716 #define CHAR_n 'n'
717 #define CHAR_o 'o'
718 #define CHAR_p 'p'
719 #define CHAR_q 'q'
720 #define CHAR_r 'r'
721 #define CHAR_s 's'
722 #define CHAR_t 't'
723 #define CHAR_u 'u'
724 #define CHAR_v 'v'
725 #define CHAR_w 'w'
726 #define CHAR_x 'x'
727 #define CHAR_y 'y'
728 #define CHAR_z 'z'
729 #define CHAR_LEFT_CURLY_BRACKET '{'
730 #define CHAR_VERTICAL_LINE '|'
731 #define CHAR_RIGHT_CURLY_BRACKET '}'
732 #define CHAR_TILDE '~'
733
734 #define STR_HT "\t"
735 #define STR_VT "\v"
736 #define STR_FF "\f"
737 #define STR_CR "\r"
738 #define STR_NL "\n"
739 #define STR_BS "\b"
740 #define STR_BEL "\a"
741 #ifdef EBCDIC
742 #define STR_ESC "\047"
743 #define STR_DEL "\007"
744 #else
745 #define STR_ESC "\033"
746 #define STR_DEL "\177"
747 #endif
748
749 #define STR_SPACE " "
750 #define STR_EXCLAMATION_MARK "!"
751 #define STR_QUOTATION_MARK "\""
752 #define STR_NUMBER_SIGN "#"
753 #define STR_DOLLAR_SIGN "$"
754 #define STR_PERCENT_SIGN "%"
755 #define STR_AMPERSAND "&"
756 #define STR_APOSTROPHE "'"
757 #define STR_LEFT_PARENTHESIS "("
758 #define STR_RIGHT_PARENTHESIS ")"
759 #define STR_ASTERISK "*"
760 #define STR_PLUS "+"
761 #define STR_COMMA ","
762 #define STR_MINUS "-"
763 #define STR_DOT "."
764 #define STR_SLASH "/"
765 #define STR_0 "0"
766 #define STR_1 "1"
767 #define STR_2 "2"
768 #define STR_3 "3"
769 #define STR_4 "4"
770 #define STR_5 "5"
771 #define STR_6 "6"
772 #define STR_7 "7"
773 #define STR_8 "8"
774 #define STR_9 "9"
775 #define STR_COLON ":"
776 #define STR_SEMICOLON ";"
777 #define STR_LESS_THAN_SIGN "<"
778 #define STR_EQUALS_SIGN "="
779 #define STR_GREATER_THAN_SIGN ">"
780 #define STR_QUESTION_MARK "?"
781 #define STR_COMMERCIAL_AT "@"
782 #define STR_A "A"
783 #define STR_B "B"
784 #define STR_C "C"
785 #define STR_D "D"
786 #define STR_E "E"
787 #define STR_F "F"
788 #define STR_G "G"
789 #define STR_H "H"
790 #define STR_I "I"
791 #define STR_J "J"
792 #define STR_K "K"
793 #define STR_L "L"
794 #define STR_M "M"
795 #define STR_N "N"
796 #define STR_O "O"
797 #define STR_P "P"
798 #define STR_Q "Q"
799 #define STR_R "R"
800 #define STR_S "S"
801 #define STR_T "T"
802 #define STR_U "U"
803 #define STR_V "V"
804 #define STR_W "W"
805 #define STR_X "X"
806 #define STR_Y "Y"
807 #define STR_Z "Z"
808 #define STR_LEFT_SQUARE_BRACKET "["
809 #define STR_BACKSLASH "\\"
810 #define STR_RIGHT_SQUARE_BRACKET "]"
811 #define STR_CIRCUMFLEX_ACCENT "^"
812 #define STR_UNDERSCORE "_"
813 #define STR_GRAVE_ACCENT "`"
814 #define STR_a "a"
815 #define STR_b "b"
816 #define STR_c "c"
817 #define STR_d "d"
818 #define STR_e "e"
819 #define STR_f "f"
820 #define STR_g "g"
821 #define STR_h "h"
822 #define STR_i "i"
823 #define STR_j "j"
824 #define STR_k "k"
825 #define STR_l "l"
826 #define STR_m "m"
827 #define STR_n "n"
828 #define STR_o "o"
829 #define STR_p "p"
830 #define STR_q "q"
831 #define STR_r "r"
832 #define STR_s "s"
833 #define STR_t "t"
834 #define STR_u "u"
835 #define STR_v "v"
836 #define STR_w "w"
837 #define STR_x "x"
838 #define STR_y "y"
839 #define STR_z "z"
840 #define STR_LEFT_CURLY_BRACKET "{"
841 #define STR_VERTICAL_LINE "|"
842 #define STR_RIGHT_CURLY_BRACKET "}"
843 #define STR_TILDE "~"
844
845 #define STRING_ACCEPT0 "ACCEPT\0"
846 #define STRING_COMMIT0 "COMMIT\0"
847 #define STRING_F0 "F\0"
848 #define STRING_FAIL0 "FAIL\0"
849 #define STRING_PRUNE0 "PRUNE\0"
850 #define STRING_SKIP0 "SKIP\0"
851 #define STRING_THEN "THEN"
852
853 #define STRING_alpha0 "alpha\0"
854 #define STRING_lower0 "lower\0"
855 #define STRING_upper0 "upper\0"
856 #define STRING_alnum0 "alnum\0"
857 #define STRING_ascii0 "ascii\0"
858 #define STRING_blank0 "blank\0"
859 #define STRING_cntrl0 "cntrl\0"
860 #define STRING_digit0 "digit\0"
861 #define STRING_graph0 "graph\0"
862 #define STRING_print0 "print\0"
863 #define STRING_punct0 "punct\0"
864 #define STRING_space0 "space\0"
865 #define STRING_word0 "word\0"
866 #define STRING_xdigit "xdigit"
867
868 #define STRING_DEFINE "DEFINE"
869
870 #define STRING_CR_RIGHTPAR "CR)"
871 #define STRING_LF_RIGHTPAR "LF)"
872 #define STRING_CRLF_RIGHTPAR "CRLF)"
873 #define STRING_ANY_RIGHTPAR "ANY)"
874 #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
875 #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
876 #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
877
878 #else /* SUPPORT_UTF8 */
879
880 /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
881 works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
882 only. */
883
884 #define CHAR_HT '\011'
885 #define CHAR_VT '\013'
886 #define CHAR_FF '\014'
887 #define CHAR_CR '\015'
888 #define CHAR_NL '\012'
889 #define CHAR_BS '\010'
890 #define CHAR_BEL '\007'
891 #define CHAR_ESC '\033'
892 #define CHAR_DEL '\177'
893
894 #define CHAR_SPACE '\040'
895 #define CHAR_EXCLAMATION_MARK '\041'
896 #define CHAR_QUOTATION_MARK '\042'
897 #define CHAR_NUMBER_SIGN '\043'
898 #define CHAR_DOLLAR_SIGN '\044'
899 #define CHAR_PERCENT_SIGN '\045'
900 #define CHAR_AMPERSAND '\046'
901 #define CHAR_APOSTROPHE '\047'
902 #define CHAR_LEFT_PARENTHESIS '\050'
903 #define CHAR_RIGHT_PARENTHESIS '\051'
904 #define CHAR_ASTERISK '\052'
905 #define CHAR_PLUS '\053'
906 #define CHAR_COMMA '\054'
907 #define CHAR_MINUS '\055'
908 #define CHAR_DOT '\056'
909 #define CHAR_SLASH '\057'
910 #define CHAR_0 '\060'
911 #define CHAR_1 '\061'
912 #define CHAR_2 '\062'
913 #define CHAR_3 '\063'
914 #define CHAR_4 '\064'
915 #define CHAR_5 '\065'
916 #define CHAR_6 '\066'
917 #define CHAR_7 '\067'
918 #define CHAR_8 '\070'
919 #define CHAR_9 '\071'
920 #define CHAR_COLON '\072'
921 #define CHAR_SEMICOLON '\073'
922 #define CHAR_LESS_THAN_SIGN '\074'
923 #define CHAR_EQUALS_SIGN '\075'
924 #define CHAR_GREATER_THAN_SIGN '\076'
925 #define CHAR_QUESTION_MARK '\077'
926 #define CHAR_COMMERCIAL_AT '\100'
927 #define CHAR_A '\101'
928 #define CHAR_B '\102'
929 #define CHAR_C '\103'
930 #define CHAR_D '\104'
931 #define CHAR_E '\105'
932 #define CHAR_F '\106'
933 #define CHAR_G '\107'
934 #define CHAR_H '\110'
935 #define CHAR_I '\111'
936 #define CHAR_J '\112'
937 #define CHAR_K '\113'
938 #define CHAR_L '\114'
939 #define CHAR_M '\115'
940 #define CHAR_N '\116'
941 #define CHAR_O '\117'
942 #define CHAR_P '\120'
943 #define CHAR_Q '\121'
944 #define CHAR_R '\122'
945 #define CHAR_S '\123'
946 #define CHAR_T '\124'
947 #define CHAR_U '\125'
948 #define CHAR_V '\126'
949 #define CHAR_W '\127'
950 #define CHAR_X '\130'
951 #define CHAR_Y '\131'
952 #define CHAR_Z '\132'
953 #define CHAR_LEFT_SQUARE_BRACKET '\133'
954 #define CHAR_BACKSLASH '\134'
955 #define CHAR_RIGHT_SQUARE_BRACKET '\135'
956 #define CHAR_CIRCUMFLEX_ACCENT '\136'
957 #define CHAR_UNDERSCORE '\137'
958 #define CHAR_GRAVE_ACCENT '\140'
959 #define CHAR_a '\141'
960 #define CHAR_b '\142'
961 #define CHAR_c '\143'
962 #define CHAR_d '\144'
963 #define CHAR_e '\145'
964 #define CHAR_f '\146'
965 #define CHAR_g '\147'
966 #define CHAR_h '\150'
967 #define CHAR_i '\151'
968 #define CHAR_j '\152'
969 #define CHAR_k '\153'
970 #define CHAR_l '\154'
971 #define CHAR_m '\155'
972 #define CHAR_n '\156'
973 #define CHAR_o '\157'
974 #define CHAR_p '\160'
975 #define CHAR_q '\161'
976 #define CHAR_r '\162'
977 #define CHAR_s '\163'
978 #define CHAR_t '\164'
979 #define CHAR_u '\165'
980 #define CHAR_v '\166'
981 #define CHAR_w '\167'
982 #define CHAR_x '\170'
983 #define CHAR_y '\171'
984 #define CHAR_z '\172'
985 #define CHAR_LEFT_CURLY_BRACKET '\173'
986 #define CHAR_VERTICAL_LINE '\174'
987 #define CHAR_RIGHT_CURLY_BRACKET '\175'
988 #define CHAR_TILDE '\176'
989
990 #define STR_HT "\011"
991 #define STR_VT "\013"
992 #define STR_FF "\014"
993 #define STR_CR "\015"
994 #define STR_NL "\012"
995 #define STR_BS "\010"
996 #define STR_BEL "\007"
997 #define STR_ESC "\033"
998 #define STR_DEL "\177"
999
1000 #define STR_SPACE "\040"
1001 #define STR_EXCLAMATION_MARK "\041"
1002 #define STR_QUOTATION_MARK "\042"
1003 #define STR_NUMBER_SIGN "\043"
1004 #define STR_DOLLAR_SIGN "\044"
1005 #define STR_PERCENT_SIGN "\045"
1006 #define STR_AMPERSAND "\046"
1007 #define STR_APOSTROPHE "\047"
1008 #define STR_LEFT_PARENTHESIS "\050"
1009 #define STR_RIGHT_PARENTHESIS "\051"
1010 #define STR_ASTERISK "\052"
1011 #define STR_PLUS "\053"
1012 #define STR_COMMA "\054"
1013 #define STR_MINUS "\055"
1014 #define STR_DOT "\056"
1015 #define STR_SLASH "\057"
1016 #define STR_0 "\060"
1017 #define STR_1 "\061"
1018 #define STR_2 "\062"
1019 #define STR_3 "\063"
1020 #define STR_4 "\064"
1021 #define STR_5 "\065"
1022 #define STR_6 "\066"
1023 #define STR_7 "\067"
1024 #define STR_8 "\070"
1025 #define STR_9 "\071"
1026 #define STR_COLON "\072"
1027 #define STR_SEMICOLON "\073"
1028 #define STR_LESS_THAN_SIGN "\074"
1029 #define STR_EQUALS_SIGN "\075"
1030 #define STR_GREATER_THAN_SIGN "\076"
1031 #define STR_QUESTION_MARK "\077"
1032 #define STR_COMMERCIAL_AT "\100"
1033 #define STR_A "\101"
1034 #define STR_B "\102"
1035 #define STR_C "\103"
1036 #define STR_D "\104"
1037 #define STR_E "\105"
1038 #define STR_F "\106"
1039 #define STR_G "\107"
1040 #define STR_H "\110"
1041 #define STR_I "\111"
1042 #define STR_J "\112"
1043 #define STR_K "\113"
1044 #define STR_L "\114"
1045 #define STR_M "\115"
1046 #define STR_N "\116"
1047 #define STR_O "\117"
1048 #define STR_P "\120"
1049 #define STR_Q "\121"
1050 #define STR_R "\122"
1051 #define STR_S "\123"
1052 #define STR_T "\124"
1053 #define STR_U "\125"
1054 #define STR_V "\126"
1055 #define STR_W "\127"
1056 #define STR_X "\130"
1057 #define STR_Y "\131"
1058 #define STR_Z "\132"
1059 #define STR_LEFT_SQUARE_BRACKET "\133"
1060 #define STR_BACKSLASH "\134"
1061 #define STR_RIGHT_SQUARE_BRACKET "\135"
1062 #define STR_CIRCUMFLEX_ACCENT "\136"
1063 #define STR_UNDERSCORE "\137"
1064 #define STR_GRAVE_ACCENT "\140"
1065 #define STR_a "\141"
1066 #define STR_b "\142"
1067 #define STR_c "\143"
1068 #define STR_d "\144"
1069 #define STR_e "\145"
1070 #define STR_f "\146"
1071 #define STR_g "\147"
1072 #define STR_h "\150"
1073 #define STR_i "\151"
1074 #define STR_j "\152"
1075 #define STR_k "\153"
1076 #define STR_l "\154"
1077 #define STR_m "\155"
1078 #define STR_n "\156"
1079 #define STR_o "\157"
1080 #define STR_p "\160"
1081 #define STR_q "\161"
1082 #define STR_r "\162"
1083 #define STR_s "\163"
1084 #define STR_t "\164"
1085 #define STR_u "\165"
1086 #define STR_v "\166"
1087 #define STR_w "\167"
1088 #define STR_x "\170"
1089 #define STR_y "\171"
1090 #define STR_z "\172"
1091 #define STR_LEFT_CURLY_BRACKET "\173"
1092 #define STR_VERTICAL_LINE "\174"
1093 #define STR_RIGHT_CURLY_BRACKET "\175"
1094 #define STR_TILDE "\176"
1095
1096 #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1097 #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1098 #define STRING_F0 STR_F "\0"
1099 #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
1100 #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
1101 #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
1102 #define STRING_THEN STR_T STR_H STR_E STR_N
1103
1104 #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
1105 #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
1106 #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
1107 #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
1108 #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
1109 #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
1110 #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
1111 #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
1112 #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
1113 #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
1114 #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
1115 #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
1116 #define STRING_word0 STR_w STR_o STR_r STR_d "\0"
1117 #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
1118
1119 #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
1120
1121 #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
1122 #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
1123 #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1124 #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1125 #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1126 #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
1127 #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
1128
1129 #endif /* SUPPORT_UTF8 */
1130
1131 /* Escape items that are just an encoding of a particular data value. */
1132
1133 #ifndef ESC_e
1134 #define ESC_e CHAR_ESC
1135 #endif
1136
1137 #ifndef ESC_f
1138 #define ESC_f CHAR_FF
1139 #endif
1140
1141 #ifndef ESC_n
1142 #define ESC_n CHAR_NL
1143 #endif
1144
1145 #ifndef ESC_r
1146 #define ESC_r CHAR_CR
1147 #endif
1148
1149 /* We can't officially use ESC_t because it is a POSIX reserved identifier
1150 (presumably because of all the others like size_t). */
1151
1152 #ifndef ESC_tee
1153 #define ESC_tee CHAR_HT
1154 #endif
1155
1156 /* Codes for different types of Unicode property */
1157
1158 #define PT_ANY 0 /* Any property - matches all chars */
1159 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
1160 #define PT_GC 2 /* General characteristic (e.g. L) */
1161 #define PT_PC 3 /* Particular characteristic (e.g. Lu) */
1162 #define PT_SC 4 /* Script (e.g. Han) */
1163
1164 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1165 contain UTF-8 characters with values greater than 255. */
1166
1167 #define XCL_NOT 0x01 /* Flag: this is a negative class */
1168 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
1169
1170 #define XCL_END 0 /* Marks end of individual items */
1171 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
1172 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
1173 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
1174 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
1175
1176 /* These are escaped items that aren't just an encoding of a particular data
1177 value such as \n. They must have non-zero values, as check_escape() returns
1178 their negation. Also, they must appear in the same order as in the opcode
1179 definitions below, up to ESC_z. There's a dummy for OP_ANY because it
1180 corresponds to "." rather than an escape sequence, and another for OP_ALLANY
1181 (which is used for [^] in JavaScript compatibility mode).
1182
1183 The final escape must be ESC_REF as subsequent values are used for
1184 backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
1185 greater than ESC_b and less than ESC_Z to detect the types that may be
1186 repeated. These are the types that consume characters. If any new escapes are
1187 put in between that don't consume a character, that code will have to change.
1188 */
1189
1190 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1191 ESC_W, ESC_w, ESC_dum1, ESC_dum2, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1192 ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_g, ESC_k,
1193 ESC_REF };
1194
1195
1196 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1197 OP_EOD must correspond in order to the list of escapes immediately above.
1198
1199 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1200 that follow must also be updated to match. There is also a table called
1201 "coptable" in pcre_dfa_exec.c that must be updated. */
1202
1203 enum {
1204 OP_END, /* 0 End of pattern */
1205
1206 /* Values corresponding to backslashed metacharacters */
1207
1208 OP_SOD, /* 1 Start of data: \A */
1209 OP_SOM, /* 2 Start of match (subject + offset): \G */
1210 OP_SET_SOM, /* 3 Set start of match (\K) */
1211 OP_NOT_WORD_BOUNDARY, /* 4 \B */
1212 OP_WORD_BOUNDARY, /* 5 \b */
1213 OP_NOT_DIGIT, /* 6 \D */
1214 OP_DIGIT, /* 7 \d */
1215 OP_NOT_WHITESPACE, /* 8 \S */
1216 OP_WHITESPACE, /* 9 \s */
1217 OP_NOT_WORDCHAR, /* 10 \W */
1218 OP_WORDCHAR, /* 11 \w */
1219 OP_ANY, /* 12 Match any character (subject to DOTALL) */
1220 OP_ALLANY, /* 13 Match any character (not subject to DOTALL) */
1221 OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1222 OP_NOTPROP, /* 15 \P (not Unicode property) */
1223 OP_PROP, /* 16 \p (Unicode property) */
1224 OP_ANYNL, /* 17 \R (any newline sequence) */
1225 OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
1226 OP_HSPACE, /* 19 \h (horizontal whitespace) */
1227 OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
1228 OP_VSPACE, /* 21 \v (vertical whitespace) */
1229 OP_EXTUNI, /* 22 \X (extended Unicode sequence */
1230 OP_EODN, /* 23 End of data or \n at end of data: \Z. */
1231 OP_EOD, /* 24 End of data: \z */
1232
1233 OP_OPT, /* 25 Set runtime options */
1234 OP_CIRC, /* 26 Start of line - varies with multiline switch */
1235 OP_DOLL, /* 27 End of line - varies with multiline switch */
1236 OP_CHAR, /* 28 Match one character, casefully */
1237 OP_CHARNC, /* 29 Match one character, caselessly */
1238 OP_NOT, /* 30 Match one character, not the following one */
1239
1240 OP_STAR, /* 31 The maximizing and minimizing versions of */
1241 OP_MINSTAR, /* 32 these six opcodes must come in pairs, with */
1242 OP_PLUS, /* 33 the minimizing one second. */
1243 OP_MINPLUS, /* 34 This first set applies to single characters.*/
1244 OP_QUERY, /* 35 */
1245 OP_MINQUERY, /* 36 */
1246
1247 OP_UPTO, /* 37 From 0 to n matches */
1248 OP_MINUPTO, /* 38 */
1249 OP_EXACT, /* 39 Exactly n matches */
1250
1251 OP_POSSTAR, /* 40 Possessified star */
1252 OP_POSPLUS, /* 41 Possessified plus */
1253 OP_POSQUERY, /* 42 Posesssified query */
1254 OP_POSUPTO, /* 43 Possessified upto */
1255
1256 OP_NOTSTAR, /* 44 The maximizing and minimizing versions of */
1257 OP_NOTMINSTAR, /* 45 these six opcodes must come in pairs, with */
1258 OP_NOTPLUS, /* 46 the minimizing one second. They must be in */
1259 OP_NOTMINPLUS, /* 47 exactly the same order as those above. */
1260 OP_NOTQUERY, /* 48 This set applies to "not" single characters. */
1261 OP_NOTMINQUERY, /* 49 */
1262
1263 OP_NOTUPTO, /* 50 From 0 to n matches */
1264 OP_NOTMINUPTO, /* 51 */
1265 OP_NOTEXACT, /* 52 Exactly n matches */
1266
1267 OP_NOTPOSSTAR, /* 53 Possessified versions */
1268 OP_NOTPOSPLUS, /* 54 */
1269 OP_NOTPOSQUERY, /* 55 */
1270 OP_NOTPOSUPTO, /* 56 */
1271
1272 OP_TYPESTAR, /* 57 The maximizing and minimizing versions of */
1273 OP_TYPEMINSTAR, /* 58 these six opcodes must come in pairs, with */
1274 OP_TYPEPLUS, /* 59 the minimizing one second. These codes must */
1275 OP_TYPEMINPLUS, /* 60 be in exactly the same order as those above. */
1276 OP_TYPEQUERY, /* 61 This set applies to character types such as \d */
1277 OP_TYPEMINQUERY, /* 62 */
1278
1279 OP_TYPEUPTO, /* 63 From 0 to n matches */
1280 OP_TYPEMINUPTO, /* 64 */
1281 OP_TYPEEXACT, /* 65 Exactly n matches */
1282
1283 OP_TYPEPOSSTAR, /* 66 Possessified versions */
1284 OP_TYPEPOSPLUS, /* 67 */
1285 OP_TYPEPOSQUERY, /* 68 */
1286 OP_TYPEPOSUPTO, /* 69 */
1287
1288 OP_CRSTAR, /* 70 The maximizing and minimizing versions of */
1289 OP_CRMINSTAR, /* 71 all these opcodes must come in pairs, with */
1290 OP_CRPLUS, /* 72 the minimizing one second. These codes must */
1291 OP_CRMINPLUS, /* 73 be in exactly the same order as those above. */
1292 OP_CRQUERY, /* 74 These are for character classes and back refs */
1293 OP_CRMINQUERY, /* 75 */
1294 OP_CRRANGE, /* 76 These are different to the three sets above. */
1295 OP_CRMINRANGE, /* 77 */
1296
1297 OP_CLASS, /* 78 Match a character class, chars < 256 only */
1298 OP_NCLASS, /* 79 Same, but the bitmap was created from a negative
1299 class - the difference is relevant only when a UTF-8
1300 character > 255 is encountered. */
1301
1302 OP_XCLASS, /* 80 Extended class for handling UTF-8 chars within the
1303 class. This does both positive and negative. */
1304
1305 OP_REF, /* 81 Match a back reference */
1306 OP_RECURSE, /* 82 Match a numbered subpattern (possibly recursive) */
1307 OP_CALLOUT, /* 83 Call out to external function if provided */
1308
1309 OP_ALT, /* 84 Start of alternation */
1310 OP_KET, /* 85 End of group that doesn't have an unbounded repeat */
1311 OP_KETRMAX, /* 86 These two must remain together and in this */
1312 OP_KETRMIN, /* 87 order. They are for groups the repeat for ever. */
1313
1314 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
1315
1316 OP_ASSERT, /* 88 Positive lookahead */
1317 OP_ASSERT_NOT, /* 89 Negative lookahead */
1318 OP_ASSERTBACK, /* 90 Positive lookbehind */
1319 OP_ASSERTBACK_NOT, /* 91 Negative lookbehind */
1320 OP_REVERSE, /* 92 Move pointer back - used in lookbehind assertions */
1321
1322 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
1323 as there's a test for >= ONCE for a subpattern that isn't an assertion. */
1324
1325 OP_ONCE, /* 93 Atomic group */
1326 OP_BRA, /* 94 Start of non-capturing bracket */
1327 OP_CBRA, /* 95 Start of capturing bracket */
1328 OP_COND, /* 96 Conditional group */
1329
1330 /* These three must follow the previous three, in the same order. There's a
1331 check for >= SBRA to distinguish the two sets. */
1332
1333 OP_SBRA, /* 97 Start of non-capturing bracket, check empty */
1334 OP_SCBRA, /* 98 Start of capturing bracket, check empty */
1335 OP_SCOND, /* 99 Conditional group, check empty */
1336
1337 OP_CREF, /* 100 Used to hold a capture number as condition */
1338 OP_RREF, /* 101 Used to hold a recursion number as condition */
1339 OP_DEF, /* 102 The DEFINE condition */
1340
1341 OP_BRAZERO, /* 103 These two must remain together and in this */
1342 OP_BRAMINZERO, /* 104 order. */
1343
1344 /* These are backtracking control verbs */
1345
1346 OP_PRUNE, /* 105 */
1347 OP_SKIP, /* 106 */
1348 OP_THEN, /* 107 */
1349 OP_COMMIT, /* 108 */
1350
1351 /* These are forced failure and success verbs */
1352
1353 OP_FAIL, /* 109 */
1354 OP_ACCEPT, /* 110 */
1355
1356 /* This is used to skip a subpattern with a {0} quantifier */
1357
1358 OP_SKIPZERO /* 111 */
1359 };
1360
1361
1362 /* This macro defines textual names for all the opcodes. These are used only
1363 for debugging. The macro is referenced only in pcre_printint.c. */
1364
1365 #define OP_NAME_LIST \
1366 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
1367 "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
1368 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
1369 "extuni", "\\Z", "\\z", \
1370 "Opt", "^", "$", "char", "charnc", "not", \
1371 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1372 "*+","++", "?+", "{", \
1373 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1374 "*+","++", "?+", "{", \
1375 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1376 "*+","++", "?+", "{", \
1377 "*", "*?", "+", "+?", "?", "??", "{", "{", \
1378 "class", "nclass", "xclass", "Ref", "Recurse", "Callout", \
1379 "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
1380 "AssertB", "AssertB not", "Reverse", \
1381 "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond", \
1382 "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero", \
1383 "*PRUNE", "*SKIP", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT", \
1384 "Skip zero"
1385
1386
1387 /* This macro defines the length of fixed length operations in the compiled
1388 regex. The lengths are used when searching for specific things, and also in the
1389 debugging printing of a compiled regex. We use a macro so that it can be
1390 defined close to the definitions of the opcodes themselves.
1391
1392 As things have been extended, some of these are no longer fixed lenths, but are
1393 minima instead. For example, the length of a single-character repeat may vary
1394 in UTF-8 mode. The code that uses this table must know about such things. */
1395
1396 #define OP_LENGTHS \
1397 1, /* End */ \
1398 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
1399 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
1400 1, 1, 1, /* Any, AllAny, Anybyte */ \
1401 3, 3, 1, /* NOTPROP, PROP, EXTUNI */ \
1402 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1403 1, 1, 2, 1, 1, /* \Z, \z, Opt, ^, $ */ \
1404 2, /* Char - the minimum length */ \
1405 2, /* Charnc - the minimum length */ \
1406 2, /* not */ \
1407 /* Positive single-char repeats ** These are */ \
1408 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
1409 4, 4, 4, /* upto, minupto, exact ** UTF-8 mode */ \
1410 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
1411 /* Negative single-char repeats - only for chars < 256 */ \
1412 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
1413 4, 4, 4, /* NOT upto, minupto, exact */ \
1414 2, 2, 2, 4, /* Possessive *, +, ?, upto */ \
1415 /* Positive type repeats */ \
1416 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
1417 4, 4, 4, /* Type upto, minupto, exact */ \
1418 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
1419 /* Character class & ref repeats */ \
1420 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1421 5, 5, /* CRRANGE, CRMINRANGE */ \
1422 33, /* CLASS */ \
1423 33, /* NCLASS */ \
1424 0, /* XCLASS - variable length */ \
1425 3, /* REF */ \
1426 1+LINK_SIZE, /* RECURSE */ \
1427 2+2*LINK_SIZE, /* CALLOUT */ \
1428 1+LINK_SIZE, /* Alt */ \
1429 1+LINK_SIZE, /* Ket */ \
1430 1+LINK_SIZE, /* KetRmax */ \
1431 1+LINK_SIZE, /* KetRmin */ \
1432 1+LINK_SIZE, /* Assert */ \
1433 1+LINK_SIZE, /* Assert not */ \
1434 1+LINK_SIZE, /* Assert behind */ \
1435 1+LINK_SIZE, /* Assert behind not */ \
1436 1+LINK_SIZE, /* Reverse */ \
1437 1+LINK_SIZE, /* ONCE */ \
1438 1+LINK_SIZE, /* BRA */ \
1439 3+LINK_SIZE, /* CBRA */ \
1440 1+LINK_SIZE, /* COND */ \
1441 1+LINK_SIZE, /* SBRA */ \
1442 3+LINK_SIZE, /* SCBRA */ \
1443 1+LINK_SIZE, /* SCOND */ \
1444 3, /* CREF */ \
1445 3, /* RREF */ \
1446 1, /* DEF */ \
1447 1, 1, /* BRAZERO, BRAMINZERO */ \
1448 1, 1, 1, 1, /* PRUNE, SKIP, THEN, COMMIT, */ \
1449 1, 1, 1 /* FAIL, ACCEPT, SKIPZERO */
1450
1451
1452 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
1453
1454 #define RREF_ANY 0xffff
1455
1456 /* Error code numbers. They are given names so that they can more easily be
1457 tracked. */
1458
1459 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
1460 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
1461 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
1462 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1463 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1464 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1465 ERR60, ERR61, ERR62, ERR63, ERR64 };
1466
1467 /* The real format of the start of the pcre block; the index of names and the
1468 code vector run on as long as necessary after the end. We store an explicit
1469 offset to the name table so that if a regex is compiled on one host, saved, and
1470 then run on another where the size of pointers is different, all might still
1471 be well. For the case of compiled-on-4 and run-on-8, we include an extra
1472 pointer that is always NULL. For future-proofing, a few dummy fields were
1473 originally included - even though you can never get this planning right - but
1474 there is only one left now.
1475
1476 NOTE NOTE NOTE:
1477 Because people can now save and re-use compiled patterns, any additions to this
1478 structure should be made at the end, and something earlier (e.g. a new
1479 flag in the options or one of the dummy fields) should indicate that the new
1480 fields are present. Currently PCRE always sets the dummy fields to zero.
1481 NOTE NOTE NOTE:
1482 */
1483
1484 typedef struct real_pcre {
1485 pcre_uint32 magic_number;
1486 pcre_uint32 size; /* Total that was malloced */
1487 pcre_uint32 options; /* Public options */
1488 pcre_uint16 flags; /* Private flags */
1489 pcre_uint16 dummy1; /* For future use */
1490 pcre_uint16 top_bracket;
1491 pcre_uint16 top_backref;
1492 pcre_uint16 first_byte;
1493 pcre_uint16 req_byte;
1494 pcre_uint16 name_table_offset; /* Offset to name table that follows */
1495 pcre_uint16 name_entry_size; /* Size of any name items */
1496 pcre_uint16 name_count; /* Number of name items */
1497 pcre_uint16 ref_count; /* Reference count */
1498
1499 const unsigned char *tables; /* Pointer to tables or NULL for std */
1500 const unsigned char *nullpad; /* NULL padding */
1501 } real_pcre;
1502
1503 /* The format of the block used to store data from pcre_study(). The same
1504 remark (see NOTE above) about extending this structure applies. */
1505
1506 typedef struct pcre_study_data {
1507 pcre_uint32 size; /* Total that was malloced */
1508 pcre_uint32 options;
1509 uschar start_bits[32];
1510 } pcre_study_data;
1511
1512 /* Structure for passing "static" information around between the functions
1513 doing the compiling, so that they are thread-safe. */
1514
1515 typedef struct compile_data {
1516 const uschar *lcc; /* Points to lower casing table */
1517 const uschar *fcc; /* Points to case-flipping table */
1518 const uschar *cbits; /* Points to character type table */
1519 const uschar *ctypes; /* Points to table of type maps */
1520 const uschar *start_workspace;/* The start of working space */
1521 const uschar *start_code; /* The start of the compiled code */
1522 const uschar *start_pattern; /* The start of the pattern */
1523 const uschar *end_pattern; /* The end of the pattern */
1524 uschar *hwm; /* High watermark of workspace */
1525 uschar *name_table; /* The name/number table */
1526 int names_found; /* Number of entries so far */
1527 int name_entry_size; /* Size of each entry */
1528 int bracount; /* Count of capturing parens as we compile */
1529 int final_bracount; /* Saved value after first pass */
1530 int top_backref; /* Maximum back reference */
1531 unsigned int backref_map; /* Bitmap of low back refs */
1532 int external_options; /* External (initial) options */
1533 int external_flags; /* External flag bits to be set */
1534 int req_varyopt; /* "After variable item" flag for reqbyte */
1535 BOOL had_accept; /* (*ACCEPT) encountered */
1536 int nltype; /* Newline type */
1537 int nllen; /* Newline string length */
1538 uschar nl[4]; /* Newline string when fixed length */
1539 } compile_data;
1540
1541 /* Structure for maintaining a chain of pointers to the currently incomplete
1542 branches, for testing for left recursion. */
1543
1544 typedef struct branch_chain {
1545 struct branch_chain *outer;
1546 uschar *current;
1547 } branch_chain;
1548
1549 /* Structure for items in a linked list that represents an explicit recursive
1550 call within the pattern. */
1551
1552 typedef struct recursion_info {
1553 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
1554 int group_num; /* Number of group that was called */
1555 const uschar *after_call; /* "Return value": points after the call in the expr */
1556 USPTR save_start; /* Old value of mstart */
1557 int *offset_save; /* Pointer to start of saved offsets */
1558 int saved_max; /* Number of saved offsets */
1559 } recursion_info;
1560
1561 /* Structure for building a chain of data for holding the values of the subject
1562 pointer at the start of each subpattern, so as to detect when an empty string
1563 has been matched by a subpattern - to break infinite loops. */
1564
1565 typedef struct eptrblock {
1566 struct eptrblock *epb_prev;
1567 USPTR epb_saved_eptr;
1568 } eptrblock;
1569
1570
1571 /* Structure for passing "static" information around between the functions
1572 doing traditional NFA matching, so that they are thread-safe. */
1573
1574 typedef struct match_data {
1575 unsigned long int match_call_count; /* As it says */
1576 unsigned long int match_limit; /* As it says */
1577 unsigned long int match_limit_recursion; /* As it says */
1578 int *offset_vector; /* Offset vector */
1579 int offset_end; /* One past the end */
1580 int offset_max; /* The maximum usable for return data */
1581 int nltype; /* Newline type */
1582 int nllen; /* Newline string length */
1583 uschar nl[4]; /* Newline string when fixed */
1584 const uschar *lcc; /* Points to lower casing table */
1585 const uschar *ctypes; /* Points to table of type maps */
1586 BOOL offset_overflow; /* Set if too many extractions */
1587 BOOL notbol; /* NOTBOL flag */
1588 BOOL noteol; /* NOTEOL flag */
1589 BOOL utf8; /* UTF8 flag */
1590 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
1591 BOOL endonly; /* Dollar not before final \n */
1592 BOOL notempty; /* Empty string match not wanted */
1593 BOOL partial; /* PARTIAL flag */
1594 BOOL hitend; /* Hit the end of the subject at some point */
1595 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
1596 const uschar *start_code; /* For use when recursing */
1597 USPTR start_subject; /* Start of the subject string */
1598 USPTR end_subject; /* End of the subject string */
1599 USPTR start_match_ptr; /* Start of matched string */
1600 USPTR end_match_ptr; /* Subject position at end match */
1601 int end_offset_top; /* Highwater mark at end of match */
1602 int capture_last; /* Most recent capture number */
1603 int start_offset; /* The start offset value */
1604 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1605 int eptrn; /* Next free eptrblock */
1606 recursion_info *recursive; /* Linked list of recursion data */
1607 void *callout_data; /* To pass back to callouts */
1608 } match_data;
1609
1610 /* A similar structure is used for the same purpose by the DFA matching
1611 functions. */
1612
1613 typedef struct dfa_match_data {
1614 const uschar *start_code; /* Start of the compiled pattern */
1615 const uschar *start_subject; /* Start of the subject string */
1616 const uschar *end_subject; /* End of subject string */
1617 const uschar *tables; /* Character tables */
1618 int moptions; /* Match options */
1619 int poptions; /* Pattern options */
1620 int nltype; /* Newline type */
1621 int nllen; /* Newline string length */
1622 uschar nl[4]; /* Newline string when fixed */
1623 void *callout_data; /* To pass back to callouts */
1624 } dfa_match_data;
1625
1626 /* Bit definitions for entries in the pcre_ctypes table. */
1627
1628 #define ctype_space 0x01
1629 #define ctype_letter 0x02
1630 #define ctype_digit 0x04
1631 #define ctype_xdigit 0x08
1632 #define ctype_word 0x10 /* alphanumeric or '_' */
1633 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1634
1635 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1636 of bits for a class map. Some classes are built by combining these tables. */
1637
1638 #define cbit_space 0 /* [:space:] or \s */
1639 #define cbit_xdigit 32 /* [:xdigit:] */
1640 #define cbit_digit 64 /* [:digit:] or \d */
1641 #define cbit_upper 96 /* [:upper:] */
1642 #define cbit_lower 128 /* [:lower:] */
1643 #define cbit_word 160 /* [:word:] or \w */
1644 #define cbit_graph 192 /* [:graph:] */
1645 #define cbit_print 224 /* [:print:] */
1646 #define cbit_punct 256 /* [:punct:] */
1647 #define cbit_cntrl 288 /* [:cntrl:] */
1648 #define cbit_length 320 /* Length of the cbits table */
1649
1650 /* Offsets of the various tables from the base tables pointer, and
1651 total length. */
1652
1653 #define lcc_offset 0
1654 #define fcc_offset 256
1655 #define cbits_offset 512
1656 #define ctypes_offset (cbits_offset + cbit_length)
1657 #define tables_length (ctypes_offset + 256)
1658
1659 /* Layout of the UCP type table that translates property names into types and
1660 codes. Each entry used to point directly to a name, but to reduce the number of
1661 relocations in shared libraries, it now has an offset into a single string
1662 instead. */
1663
1664 typedef struct {
1665 pcre_uint16 name_offset;
1666 pcre_uint16 type;
1667 pcre_uint16 value;
1668 } ucp_type_table;
1669
1670
1671 /* Internal shared data tables. These are tables that are used by more than one
1672 of the exported public functions. They have to be "external" in the C sense,
1673 but are not part of the PCRE public API. The data for these tables is in the
1674 pcre_tables.c module. */
1675
1676 extern const int _pcre_utf8_table1[];
1677 extern const int _pcre_utf8_table2[];
1678 extern const int _pcre_utf8_table3[];
1679 extern const uschar _pcre_utf8_table4[];
1680
1681 extern const int _pcre_utf8_table1_size;
1682
1683 extern const char _pcre_utt_names[];
1684 extern const ucp_type_table _pcre_utt[];
1685 extern const int _pcre_utt_size;
1686
1687 extern const uschar _pcre_default_tables[];
1688
1689 extern const uschar _pcre_OP_lengths[];
1690
1691
1692 /* Internal shared functions. These are functions that are used by more than
1693 one of the exported public functions. They have to be "external" in the C
1694 sense, but are not part of the PCRE public API. */
1695
1696 extern BOOL _pcre_is_newline(const uschar *, int, const uschar *,
1697 int *, BOOL);
1698 extern int _pcre_ord2utf8(int, uschar *);
1699 extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1700 const pcre_study_data *, pcre_study_data *);
1701 extern int _pcre_valid_utf8(const uschar *, int);
1702 extern BOOL _pcre_was_newline(const uschar *, int, const uschar *,
1703 int *, BOOL);
1704 extern BOOL _pcre_xclass(int, const uschar *);
1705
1706
1707 /* Unicode character database (UCD) */
1708
1709 typedef struct {
1710 uschar script;
1711 uschar chartype;
1712 pcre_int32 other_case;
1713 } ucd_record;
1714
1715 extern const ucd_record _pcre_ucd_records[];
1716 extern const uschar _pcre_ucd_stage1[];
1717 extern const pcre_uint16 _pcre_ucd_stage2[];
1718 extern const int _pcre_ucp_gentype[];
1719
1720
1721 /* UCD access macros */
1722
1723 #define UCD_BLOCK_SIZE 128
1724 #define GET_UCD(ch) (_pcre_ucd_records + \
1725 _pcre_ucd_stage2[_pcre_ucd_stage1[(ch) / UCD_BLOCK_SIZE] * \
1726 UCD_BLOCK_SIZE + ch % UCD_BLOCK_SIZE])
1727
1728 #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
1729 #define UCD_SCRIPT(ch) GET_UCD(ch)->script
1730 #define UCD_CATEGORY(ch) _pcre_ucp_gentype[UCD_CHARTYPE(ch)]
1731 #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case)
1732
1733 #endif
1734
1735 /* End of pcre_internal.h */

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