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Revision 178 - (show annotations) (download)
Wed Jun 13 08:44:34 2007 UTC (7 years, 6 months ago) by ph10
File MIME type: text/plain
File size: 45024 byte(s)
Add support for \h, \H, \v, \V.

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) 1997-2007 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 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
55 inline, and there are *still* stupid compilers about that don't like indented
56 pre-processor statements, or at least there were when I first wrote this. After
57 all, it had only been about 10 years then...
58
59 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
60 be absolutely sure we get our version. */
61
62 #undef DPRINTF
63 #ifdef DEBUG
64 #define DPRINTF(p) printf p
65 #else
66 #define DPRINTF(p) /* Nothing */
67 #endif
68
69
70 /* Get the definitions provided by running "configure" */
71
72 #include "config.h"
73
74 /* Standard C headers plus the external interface definition. The only time
75 setjmp and stdarg are used is when NO_RECURSE is set. */
76
77 #include <ctype.h>
78 #include <limits.h>
79 #include <setjmp.h>
80 #include <stdarg.h>
81 #include <stddef.h>
82 #include <stdio.h>
83 #include <stdlib.h>
84 #include <string.h>
85
86 /* When compiling a DLL for Windows, the exported symbols have to be declared
87 using some MS magic. I found some useful information on this web page:
88 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
89 information there, using __declspec(dllexport) without "extern" we have a
90 definition; with "extern" we have a declaration. The settings here override the
91 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
92 which is all that is needed for applications (they just import the symbols). We
93 use:
94
95 PCRE_EXP_DECL for declarations
96 PCRE_EXP_DEFN for definitions of exported functions
97 PCRE_EXP_DATA_DEFN for definitions of exported variables
98
99 The reason for the two DEFN macros is that in non-Windows environments, one
100 does not want to have "extern" before variable definitions because it leads to
101 compiler warnings. So we distinguish between functions and variables. In
102 Windows, the two should always be the same.
103
104 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
105 which is an application, but needs to import this file in order to "peek" at
106 internals, can #include pcre.h first to get an application's-eye view.
107
108 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
109 special-purpose environments) might want to stick other stuff in front of
110 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
111 PCRE_EXP_DATA_DEFN only if they are not already set. */
112
113 #ifndef PCRE_EXP_DECL
114 # ifdef _WIN32
115 # ifdef DLL_EXPORT
116 # define PCRE_EXP_DECL extern __declspec(dllexport)
117 # define PCRE_EXP_DEFN __declspec(dllexport)
118 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
119 # else
120 # define PCRE_EXP_DECL extern
121 # define PCRE_EXP_DEFN
122 # define PCRE_EXP_DATA_DEFN
123 # endif
124 #
125 # else
126 # ifdef __cplusplus
127 # define PCRE_EXP_DECL extern "C"
128 # else
129 # define PCRE_EXP_DECL extern
130 # endif
131 # ifndef PCRE_EXP_DEFN
132 # define PCRE_EXP_DEFN PCRE_EXP_DECL
133 # endif
134 # ifndef PCRE_EXP_DATA_DEFN
135 # define PCRE_EXP_DATA_DEFN
136 # endif
137 # endif
138 #endif
139
140 /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
141 cannot determine these outside the compilation (e.g. by running a program as
142 part of "configure") because PCRE is often cross-compiled for use on other
143 systems. Instead we make use of the maximum sizes that are available at
144 preprocessor time in standard C environments. */
145
146 #if USHRT_MAX == 65535
147 typedef unsigned short pcre_uint16;
148 #elif UINT_MAX == 65535
149 typedef unsigned int pcre_uint16;
150 #else
151 #error Cannot determine a type for 16-bit unsigned integers
152 #endif
153
154 #if UINT_MAX == 4294967295
155 typedef unsigned int pcre_uint32;
156 #elif ULONG_MAX == 4294967295
157 typedef unsigned long int pcre_uint32;
158 #else
159 #error Cannot determine a type for 32-bit unsigned integers
160 #endif
161
162 /* All character handling must be done as unsigned characters. Otherwise there
163 are problems with top-bit-set characters and functions such as isspace().
164 However, we leave the interface to the outside world as char *, because that
165 should make things easier for callers. We define a short type for unsigned char
166 to save lots of typing. I tried "uchar", but it causes problems on Digital
167 Unix, where it is defined in sys/types, so use "uschar" instead. */
168
169 typedef unsigned char uschar;
170
171 /* This is an unsigned int value that no character can ever have. UTF-8
172 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
173 0x0010ffff). */
174
175 #define NOTACHAR 0xffffffff
176
177 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
178 "any" and "anycrlf" at present). The following macros are used to package up
179 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
180 modules to indicate in which datablock the parameters exist, and what the
181 start/end of string field names are. */
182
183 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
184 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
185 #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
186
187 /* This macro checks for a newline at the given position */
188
189 #define IS_NEWLINE(p) \
190 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
191 ((p) < NLBLOCK->PSEND && \
192 _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\
193 utf8)) \
194 : \
195 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
196 (p)[0] == NLBLOCK->nl[0] && \
197 (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
198 ) \
199 )
200
201 /* This macro checks for a newline immediately preceding the given position */
202
203 #define WAS_NEWLINE(p) \
204 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
205 ((p) > NLBLOCK->PSSTART && \
206 _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
207 &(NLBLOCK->nllen), utf8)) \
208 : \
209 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
210 (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
211 (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
212 ) \
213 )
214
215 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
216 with a custom type. This makes it possible, for example, to allow pcre_exec()
217 to process subject strings that are discontinuous by using a smart pointer
218 class. It must always be possible to inspect all of the subject string in
219 pcre_exec() because of the way it backtracks. Two macros are required in the
220 normal case, for sign-unspecified and unsigned char pointers. The former is
221 used for the external interface and appears in pcre.h, which is why its name
222 must begin with PCRE_. */
223
224 #ifdef CUSTOM_SUBJECT_PTR
225 #define PCRE_SPTR CUSTOM_SUBJECT_PTR
226 #define USPTR CUSTOM_SUBJECT_PTR
227 #else
228 #define PCRE_SPTR const char *
229 #define USPTR const unsigned char *
230 #endif
231
232
233
234 /* Include the public PCRE header and the definitions of UCP character property
235 values. */
236
237 #include <pcre.h>
238 #include "ucp.h"
239
240 /* When compiling for use with the Virtual Pascal compiler, these functions
241 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
242 option on the command line. */
243
244 #ifdef VPCOMPAT
245 #define strlen(s) _strlen(s)
246 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
247 #define memcmp(s,c,n) _memcmp(s,c,n)
248 #define memcpy(d,s,n) _memcpy(d,s,n)
249 #define memmove(d,s,n) _memmove(d,s,n)
250 #define memset(s,c,n) _memset(s,c,n)
251 #else /* VPCOMPAT */
252
253 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
254 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
255 is set. Otherwise, include an emulating function for those systems that have
256 neither (there some non-Unix environments where this is the case). */
257
258 #ifndef HAVE_MEMMOVE
259 #undef memmove /* some systems may have a macro */
260 #ifdef HAVE_BCOPY
261 #define memmove(a, b, c) bcopy(b, a, c)
262 #else /* HAVE_BCOPY */
263 static void *
264 pcre_memmove(void *d, const void *s, size_t n)
265 {
266 size_t i;
267 unsigned char *dest = (unsigned char *)d;
268 const unsigned char *src = (const unsigned char *)s;
269 if (dest > src)
270 {
271 dest += n;
272 src += n;
273 for (i = 0; i < n; ++i) *(--dest) = *(--src);
274 return (void *)dest;
275 }
276 else
277 {
278 for (i = 0; i < n; ++i) *dest++ = *src++;
279 return (void *)(dest - n);
280 }
281 }
282 #define memmove(a, b, c) pcre_memmove(a, b, c)
283 #endif /* not HAVE_BCOPY */
284 #endif /* not HAVE_MEMMOVE */
285 #endif /* not VPCOMPAT */
286
287
288 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
289 in big-endian order) by default. These are used, for example, to link from the
290 start of a subpattern to its alternatives and its end. The use of 2 bytes per
291 offset limits the size of the compiled regex to around 64K, which is big enough
292 for almost everybody. However, I received a request for an even bigger limit.
293 For this reason, and also to make the code easier to maintain, the storing and
294 loading of offsets from the byte string is now handled by the macros that are
295 defined here.
296
297 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
298 the config.h file, but can be overridden by using -D on the command line. This
299 is automated on Unix systems via the "configure" command. */
300
301 #if LINK_SIZE == 2
302
303 #define PUT(a,n,d) \
304 (a[n] = (d) >> 8), \
305 (a[(n)+1] = (d) & 255)
306
307 #define GET(a,n) \
308 (((a)[n] << 8) | (a)[(n)+1])
309
310 #define MAX_PATTERN_SIZE (1 << 16)
311
312
313 #elif LINK_SIZE == 3
314
315 #define PUT(a,n,d) \
316 (a[n] = (d) >> 16), \
317 (a[(n)+1] = (d) >> 8), \
318 (a[(n)+2] = (d) & 255)
319
320 #define GET(a,n) \
321 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
322
323 #define MAX_PATTERN_SIZE (1 << 24)
324
325
326 #elif LINK_SIZE == 4
327
328 #define PUT(a,n,d) \
329 (a[n] = (d) >> 24), \
330 (a[(n)+1] = (d) >> 16), \
331 (a[(n)+2] = (d) >> 8), \
332 (a[(n)+3] = (d) & 255)
333
334 #define GET(a,n) \
335 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
336
337 #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */
338
339
340 #else
341 #error LINK_SIZE must be either 2, 3, or 4
342 #endif
343
344
345 /* Convenience macro defined in terms of the others */
346
347 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
348
349
350 /* PCRE uses some other 2-byte quantities that do not change when the size of
351 offsets changes. There are used for repeat counts and for other things such as
352 capturing parenthesis numbers in back references. */
353
354 #define PUT2(a,n,d) \
355 a[n] = (d) >> 8; \
356 a[(n)+1] = (d) & 255
357
358 #define GET2(a,n) \
359 (((a)[n] << 8) | (a)[(n)+1])
360
361 #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2
362
363
364 /* When UTF-8 encoding is being used, a character is no longer just a single
365 byte. The macros for character handling generate simple sequences when used in
366 byte-mode, and more complicated ones for UTF-8 characters. */
367
368 #ifndef SUPPORT_UTF8
369 #define GETCHAR(c, eptr) c = *eptr;
370 #define GETCHARTEST(c, eptr) c = *eptr;
371 #define GETCHARINC(c, eptr) c = *eptr++;
372 #define GETCHARINCTEST(c, eptr) c = *eptr++;
373 #define GETCHARLEN(c, eptr, len) c = *eptr;
374 #define BACKCHAR(eptr)
375
376 #else /* SUPPORT_UTF8 */
377
378 /* Get the next UTF-8 character, not advancing the pointer. This is called when
379 we know we are in UTF-8 mode. */
380
381 #define GETCHAR(c, eptr) \
382 c = *eptr; \
383 if (c >= 0xc0) \
384 { \
385 int gcii; \
386 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
387 int gcss = 6*gcaa; \
388 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
389 for (gcii = 1; gcii <= gcaa; gcii++) \
390 { \
391 gcss -= 6; \
392 c |= (eptr[gcii] & 0x3f) << gcss; \
393 } \
394 }
395
396 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
397 pointer. */
398
399 #define GETCHARTEST(c, eptr) \
400 c = *eptr; \
401 if (utf8 && c >= 0xc0) \
402 { \
403 int gcii; \
404 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
405 int gcss = 6*gcaa; \
406 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
407 for (gcii = 1; gcii <= gcaa; gcii++) \
408 { \
409 gcss -= 6; \
410 c |= (eptr[gcii] & 0x3f) << gcss; \
411 } \
412 }
413
414 /* Get the next UTF-8 character, advancing the pointer. This is called when we
415 know we are in UTF-8 mode. */
416
417 #define GETCHARINC(c, eptr) \
418 c = *eptr++; \
419 if (c >= 0xc0) \
420 { \
421 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
422 int gcss = 6*gcaa; \
423 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
424 while (gcaa-- > 0) \
425 { \
426 gcss -= 6; \
427 c |= (*eptr++ & 0x3f) << gcss; \
428 } \
429 }
430
431 /* Get the next character, testing for UTF-8 mode, and advancing the pointer */
432
433 #define GETCHARINCTEST(c, eptr) \
434 c = *eptr++; \
435 if (utf8 && c >= 0xc0) \
436 { \
437 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
438 int gcss = 6*gcaa; \
439 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
440 while (gcaa-- > 0) \
441 { \
442 gcss -= 6; \
443 c |= (*eptr++ & 0x3f) << gcss; \
444 } \
445 }
446
447 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
448 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
449
450 #define GETCHARLEN(c, eptr, len) \
451 c = *eptr; \
452 if (c >= 0xc0) \
453 { \
454 int gcii; \
455 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
456 int gcss = 6*gcaa; \
457 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
458 for (gcii = 1; gcii <= gcaa; gcii++) \
459 { \
460 gcss -= 6; \
461 c |= (eptr[gcii] & 0x3f) << gcss; \
462 } \
463 len += gcaa; \
464 }
465
466 /* If the pointer is not at the start of a character, move it back until
467 it is. Called only in UTF-8 mode. */
468
469 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--;
470
471 #endif
472
473
474 /* In case there is no definition of offsetof() provided - though any proper
475 Standard C system should have one. */
476
477 #ifndef offsetof
478 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
479 #endif
480
481
482 /* These are the public options that can change during matching. */
483
484 #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
485
486 /* Private options flags start at the most significant end of the four bytes.
487 The public options defined in pcre.h start at the least significant end. Make
488 sure they don't overlap! The bits are getting a bit scarce now -- when we run
489 out, there is a dummy word in the structure that could be used for the private
490 bits. */
491
492 #define PCRE_NOPARTIAL 0x80000000 /* can't use partial with this regex */
493 #define PCRE_FIRSTSET 0x40000000 /* first_byte is set */
494 #define PCRE_REQCHSET 0x20000000 /* req_byte is set */
495 #define PCRE_STARTLINE 0x10000000 /* start after \n for multiline */
496 #define PCRE_JCHANGED 0x08000000 /* j option changes within regex */
497
498 /* Options for the "extra" block produced by pcre_study(). */
499
500 #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
501
502 /* Masks for identifying the public options that are permitted at compile
503 time, run time, or study time, respectively. */
504
505 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
506 PCRE_NEWLINE_ANYCRLF)
507
508 #define PUBLIC_OPTIONS \
509 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
510 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
511 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
512 PCRE_DUPNAMES|PCRE_NEWLINE_BITS)
513
514 #define PUBLIC_EXEC_OPTIONS \
515 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
516 PCRE_PARTIAL|PCRE_NEWLINE_BITS)
517
518 #define PUBLIC_DFA_EXEC_OPTIONS \
519 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
520 PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS)
521
522 #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
523
524 /* Magic number to provide a small check against being handed junk. Also used
525 to detect whether a pattern was compiled on a host of different endianness. */
526
527 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
528
529 /* Negative values for the firstchar and reqchar variables */
530
531 #define REQ_UNSET (-2)
532 #define REQ_NONE (-1)
533
534 /* The maximum remaining length of subject we are prepared to search for a
535 req_byte match. */
536
537 #define REQ_BYTE_MAX 1000
538
539 /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
540 variable-length repeat, or a anything other than literal characters. */
541
542 #define REQ_CASELESS 0x0100 /* indicates caselessness */
543 #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
544
545 /* Miscellaneous definitions */
546
547 typedef int BOOL;
548
549 #define FALSE 0
550 #define TRUE 1
551
552 /* Escape items that are just an encoding of a particular data value. */
553
554 #ifndef ESC_e
555 #define ESC_e 27
556 #endif
557
558 #ifndef ESC_f
559 #define ESC_f '\f'
560 #endif
561
562 #ifndef ESC_n
563 #define ESC_n '\n'
564 #endif
565
566 #ifndef ESC_r
567 #define ESC_r '\r'
568 #endif
569
570 /* We can't officially use ESC_t because it is a POSIX reserved identifier
571 (presumably because of all the others like size_t). */
572
573 #ifndef ESC_tee
574 #define ESC_tee '\t'
575 #endif
576
577 /* Codes for different types of Unicode property */
578
579 #define PT_ANY 0 /* Any property - matches all chars */
580 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
581 #define PT_GC 2 /* General characteristic (e.g. L) */
582 #define PT_PC 3 /* Particular characteristic (e.g. Lu) */
583 #define PT_SC 4 /* Script (e.g. Han) */
584
585 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
586 contain UTF-8 characters with values greater than 255. */
587
588 #define XCL_NOT 0x01 /* Flag: this is a negative class */
589 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
590
591 #define XCL_END 0 /* Marks end of individual items */
592 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
593 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
594 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
595 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
596
597 /* These are escaped items that aren't just an encoding of a particular data
598 value such as \n. They must have non-zero values, as check_escape() returns
599 their negation. Also, they must appear in the same order as in the opcode
600 definitions below, up to ESC_z. There's a dummy for OP_ANY because it
601 corresponds to "." rather than an escape sequence. The final one must be
602 ESC_REF as subsequent values are used for backreferences (\1, \2, \3, etc).
603 There are two tests in the code for an escape greater than ESC_b and less than
604 ESC_Z to detect the types that may be repeated. These are the types that
605 consume characters. If any new escapes are put in between that don't consume a
606 character, that code will have to change. */
607
608 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
609 ESC_W, ESC_w, ESC_dum1, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H, ESC_h,
610 ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_k, ESC_REF };
611
612
613 /* Opcode table: OP_BRA must be last, as all values >= it are used for brackets
614 that extract substrings. Starting from 1 (i.e. after OP_END), the values up to
615 OP_EOD must correspond in order to the list of escapes immediately above.
616
617 To keep stored, compiled patterns compatible, new opcodes should be added
618 immediately before OP_BRA, where (since release 7.0) a gap is left for this
619 purpose.
620
621 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
622 that follow must also be updated to match. There is also a table called
623 "coptable" in pcre_dfa_exec.c that must be updated. */
624
625 enum {
626 OP_END, /* 0 End of pattern */
627
628 /* Values corresponding to backslashed metacharacters */
629
630 OP_SOD, /* 1 Start of data: \A */
631 OP_SOM, /* 2 Start of match (subject + offset): \G */
632 OP_SET_SOM, /* 3 Set start of match (\K) */
633 OP_NOT_WORD_BOUNDARY, /* 4 \B */
634 OP_WORD_BOUNDARY, /* 5 \b */
635 OP_NOT_DIGIT, /* 6 \D */
636 OP_DIGIT, /* 7 \d */
637 OP_NOT_WHITESPACE, /* 8 \S */
638 OP_WHITESPACE, /* 9 \s */
639 OP_NOT_WORDCHAR, /* 10 \W */
640 OP_WORDCHAR, /* 11 \w */
641 OP_ANY, /* 12 Match any character */
642 OP_ANYBYTE, /* 13 Match any byte (\C); different to OP_ANY for UTF-8 */
643 OP_NOTPROP, /* 14 \P (not Unicode property) */
644 OP_PROP, /* 15 \p (Unicode property) */
645 OP_ANYNL, /* 16 \R (any newline sequence) */
646 OP_NOT_HSPACE, /* 17 \H (not horizontal whitespace) */
647 OP_HSPACE, /* 18 \h (horizontal whitespace) */
648 OP_NOT_VSPACE, /* 19 \V (not vertical whitespace) */
649 OP_VSPACE, /* 20 \v (vertical whitespace) */
650 OP_EXTUNI, /* 21 \X (extended Unicode sequence */
651 OP_EODN, /* 22 End of data or \n at end of data: \Z. */
652 OP_EOD, /* 23 End of data: \z */
653
654 OP_OPT, /* 24 Set runtime options */
655 OP_CIRC, /* 25 Start of line - varies with multiline switch */
656 OP_DOLL, /* 26 End of line - varies with multiline switch */
657 OP_CHAR, /* 27 Match one character, casefully */
658 OP_CHARNC, /* 28 Match one character, caselessly */
659 OP_NOT, /* 29 Match one character, not the following one */
660
661 OP_STAR, /* 30 The maximizing and minimizing versions of */
662 OP_MINSTAR, /* 31 these six opcodes must come in pairs, with */
663 OP_PLUS, /* 32 the minimizing one second. */
664 OP_MINPLUS, /* 33 This first set applies to single characters.*/
665 OP_QUERY, /* 34 */
666 OP_MINQUERY, /* 35 */
667
668 OP_UPTO, /* 36 From 0 to n matches */
669 OP_MINUPTO, /* 37 */
670 OP_EXACT, /* 38 Exactly n matches */
671
672 OP_POSSTAR, /* 39 Possessified star */
673 OP_POSPLUS, /* 40 Possessified plus */
674 OP_POSQUERY, /* 41 Posesssified query */
675 OP_POSUPTO, /* 42 Possessified upto */
676
677 OP_NOTSTAR, /* 43 The maximizing and minimizing versions of */
678 OP_NOTMINSTAR, /* 44 these six opcodes must come in pairs, with */
679 OP_NOTPLUS, /* 45 the minimizing one second. They must be in */
680 OP_NOTMINPLUS, /* 46 exactly the same order as those above. */
681 OP_NOTQUERY, /* 47 This set applies to "not" single characters. */
682 OP_NOTMINQUERY, /* 48 */
683
684 OP_NOTUPTO, /* 49 From 0 to n matches */
685 OP_NOTMINUPTO, /* 50 */
686 OP_NOTEXACT, /* 51 Exactly n matches */
687
688 OP_NOTPOSSTAR, /* 52 Possessified versions */
689 OP_NOTPOSPLUS, /* 53 */
690 OP_NOTPOSQUERY, /* 54 */
691 OP_NOTPOSUPTO, /* 55 */
692
693 OP_TYPESTAR, /* 56 The maximizing and minimizing versions of */
694 OP_TYPEMINSTAR, /* 57 these six opcodes must come in pairs, with */
695 OP_TYPEPLUS, /* 58 the minimizing one second. These codes must */
696 OP_TYPEMINPLUS, /* 59 be in exactly the same order as those above. */
697 OP_TYPEQUERY, /* 60 This set applies to character types such as \d */
698 OP_TYPEMINQUERY, /* 61 */
699
700 OP_TYPEUPTO, /* 62 From 0 to n matches */
701 OP_TYPEMINUPTO, /* 63 */
702 OP_TYPEEXACT, /* 64 Exactly n matches */
703
704 OP_TYPEPOSSTAR, /* 65 Possessified versions */
705 OP_TYPEPOSPLUS, /* 66 */
706 OP_TYPEPOSQUERY, /* 67 */
707 OP_TYPEPOSUPTO, /* 68 */
708
709 OP_CRSTAR, /* 69 The maximizing and minimizing versions of */
710 OP_CRMINSTAR, /* 70 all these opcodes must come in pairs, with */
711 OP_CRPLUS, /* 71 the minimizing one second. These codes must */
712 OP_CRMINPLUS, /* 72 be in exactly the same order as those above. */
713 OP_CRQUERY, /* 73 These are for character classes and back refs */
714 OP_CRMINQUERY, /* 74 */
715 OP_CRRANGE, /* 75 These are different to the three sets above. */
716 OP_CRMINRANGE, /* 76 */
717
718 OP_CLASS, /* 77 Match a character class, chars < 256 only */
719 OP_NCLASS, /* 78 Same, but the bitmap was created from a negative
720 class - the difference is relevant only when a UTF-8
721 character > 255 is encountered. */
722
723 OP_XCLASS, /* 79 Extended class for handling UTF-8 chars within the
724 class. This does both positive and negative. */
725
726 OP_REF, /* 80 Match a back reference */
727 OP_RECURSE, /* 81 Match a numbered subpattern (possibly recursive) */
728 OP_CALLOUT, /* 82 Call out to external function if provided */
729
730 OP_ALT, /* 83 Start of alternation */
731 OP_KET, /* 84 End of group that doesn't have an unbounded repeat */
732 OP_KETRMAX, /* 85 These two must remain together and in this */
733 OP_KETRMIN, /* 86 order. They are for groups the repeat for ever. */
734
735 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
736
737 OP_ASSERT, /* 87 Positive lookahead */
738 OP_ASSERT_NOT, /* 88 Negative lookahead */
739 OP_ASSERTBACK, /* 89 Positive lookbehind */
740 OP_ASSERTBACK_NOT, /* 90 Negative lookbehind */
741 OP_REVERSE, /* 91 Move pointer back - used in lookbehind assertions */
742
743 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
744 as there's a test for >= ONCE for a subpattern that isn't an assertion. */
745
746 OP_ONCE, /* 92 Atomic group */
747 OP_BRA, /* 83 Start of non-capturing bracket */
748 OP_CBRA, /* 94 Start of capturing bracket */
749 OP_COND, /* 95 Conditional group */
750
751 /* These three must follow the previous three, in the same order. There's a
752 check for >= SBRA to distinguish the two sets. */
753
754 OP_SBRA, /* 96 Start of non-capturing bracket, check empty */
755 OP_SCBRA, /* 97 Start of capturing bracket, check empty */
756 OP_SCOND, /* 98 Conditional group, check empty */
757
758 OP_CREF, /* 99 Used to hold a capture number as condition */
759 OP_RREF, /* 100 Used to hold a recursion number as condition */
760 OP_DEF, /* 101 The DEFINE condition */
761
762 OP_BRAZERO, /* 102 These two must remain together and in this */
763 OP_BRAMINZERO /* 103 order. */
764 };
765
766
767 /* This macro defines textual names for all the opcodes. These are used only
768 for debugging. The macro is referenced only in pcre_printint.c. */
769
770 #define OP_NAME_LIST \
771 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
772 "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte", \
773 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
774 "extuni", "\\Z", "\\z", \
775 "Opt", "^", "$", "char", "charnc", "not", \
776 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
777 "*+","++", "?+", "{", \
778 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
779 "*+","++", "?+", "{", \
780 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
781 "*+","++", "?+", "{", \
782 "*", "*?", "+", "+?", "?", "??", "{", "{", \
783 "class", "nclass", "xclass", "Ref", "Recurse", "Callout", \
784 "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
785 "AssertB", "AssertB not", "Reverse", \
786 "Once", "Bra 0", "Bra", "Cond", "SBra 0", "SBra", "SCond", \
787 "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero"
788
789
790 /* This macro defines the length of fixed length operations in the compiled
791 regex. The lengths are used when searching for specific things, and also in the
792 debugging printing of a compiled regex. We use a macro so that it can be
793 defined close to the definitions of the opcodes themselves.
794
795 As things have been extended, some of these are no longer fixed lenths, but are
796 minima instead. For example, the length of a single-character repeat may vary
797 in UTF-8 mode. The code that uses this table must know about such things. */
798
799 #define OP_LENGTHS \
800 1, /* End */ \
801 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
802 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
803 1, 1, /* Any, Anybyte */ \
804 3, 3, 1, /* NOTPROP, PROP, EXTUNI */ \
805 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
806 1, 1, 2, 1, 1, /* \Z, \z, Opt, ^, $ */ \
807 2, /* Char - the minimum length */ \
808 2, /* Charnc - the minimum length */ \
809 2, /* not */ \
810 /* Positive single-char repeats ** These are */ \
811 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
812 4, 4, 4, /* upto, minupto, exact ** UTF-8 mode */ \
813 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
814 /* Negative single-char repeats - only for chars < 256 */ \
815 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
816 4, 4, 4, /* NOT upto, minupto, exact */ \
817 2, 2, 2, 4, /* Possessive *, +, ?, upto */ \
818 /* Positive type repeats */ \
819 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
820 4, 4, 4, /* Type upto, minupto, exact */ \
821 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
822 /* Character class & ref repeats */ \
823 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
824 5, 5, /* CRRANGE, CRMINRANGE */ \
825 33, /* CLASS */ \
826 33, /* NCLASS */ \
827 0, /* XCLASS - variable length */ \
828 3, /* REF */ \
829 1+LINK_SIZE, /* RECURSE */ \
830 2+2*LINK_SIZE, /* CALLOUT */ \
831 1+LINK_SIZE, /* Alt */ \
832 1+LINK_SIZE, /* Ket */ \
833 1+LINK_SIZE, /* KetRmax */ \
834 1+LINK_SIZE, /* KetRmin */ \
835 1+LINK_SIZE, /* Assert */ \
836 1+LINK_SIZE, /* Assert not */ \
837 1+LINK_SIZE, /* Assert behind */ \
838 1+LINK_SIZE, /* Assert behind not */ \
839 1+LINK_SIZE, /* Reverse */ \
840 1+LINK_SIZE, /* ONCE */ \
841 1+LINK_SIZE, /* BRA */ \
842 3+LINK_SIZE, /* CBRA */ \
843 1+LINK_SIZE, /* COND */ \
844 1+LINK_SIZE, /* SBRA */ \
845 3+LINK_SIZE, /* SCBRA */ \
846 1+LINK_SIZE, /* SCOND */ \
847 3, /* CREF */ \
848 3, /* RREF */ \
849 1, /* DEF */ \
850 1, 1, /* BRAZERO, BRAMINZERO */ \
851
852
853 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
854
855 #define RREF_ANY 0xffff
856
857 /* Error code numbers. They are given names so that they can more easily be
858 tracked. */
859
860 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
861 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
862 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
863 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
864 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
865 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58 };
866
867 /* The real format of the start of the pcre block; the index of names and the
868 code vector run on as long as necessary after the end. We store an explicit
869 offset to the name table so that if a regex is compiled on one host, saved, and
870 then run on another where the size of pointers is different, all might still
871 be well. For the case of compiled-on-4 and run-on-8, we include an extra
872 pointer that is always NULL. For future-proofing, a few dummy fields were
873 originally included - even though you can never get this planning right - but
874 there is only one left now.
875
876 NOTE NOTE NOTE:
877 Because people can now save and re-use compiled patterns, any additions to this
878 structure should be made at the end, and something earlier (e.g. a new
879 flag in the options or one of the dummy fields) should indicate that the new
880 fields are present. Currently PCRE always sets the dummy fields to zero.
881 NOTE NOTE NOTE:
882 */
883
884 typedef struct real_pcre {
885 pcre_uint32 magic_number;
886 pcre_uint32 size; /* Total that was malloced */
887 pcre_uint32 options;
888 pcre_uint32 dummy1; /* For future use, maybe */
889
890 pcre_uint16 top_bracket;
891 pcre_uint16 top_backref;
892 pcre_uint16 first_byte;
893 pcre_uint16 req_byte;
894 pcre_uint16 name_table_offset; /* Offset to name table that follows */
895 pcre_uint16 name_entry_size; /* Size of any name items */
896 pcre_uint16 name_count; /* Number of name items */
897 pcre_uint16 ref_count; /* Reference count */
898
899 const unsigned char *tables; /* Pointer to tables or NULL for std */
900 const unsigned char *nullpad; /* NULL padding */
901 } real_pcre;
902
903 /* The format of the block used to store data from pcre_study(). The same
904 remark (see NOTE above) about extending this structure applies. */
905
906 typedef struct pcre_study_data {
907 pcre_uint32 size; /* Total that was malloced */
908 pcre_uint32 options;
909 uschar start_bits[32];
910 } pcre_study_data;
911
912 /* Structure for passing "static" information around between the functions
913 doing the compiling, so that they are thread-safe. */
914
915 typedef struct compile_data {
916 const uschar *lcc; /* Points to lower casing table */
917 const uschar *fcc; /* Points to case-flipping table */
918 const uschar *cbits; /* Points to character type table */
919 const uschar *ctypes; /* Points to table of type maps */
920 const uschar *start_workspace;/* The start of working space */
921 const uschar *start_code; /* The start of the compiled code */
922 const uschar *start_pattern; /* The start of the pattern */
923 const uschar *end_pattern; /* The end of the pattern */
924 uschar *hwm; /* High watermark of workspace */
925 uschar *name_table; /* The name/number table */
926 int names_found; /* Number of entries so far */
927 int name_entry_size; /* Size of each entry */
928 int bracount; /* Count of capturing parens */
929 int top_backref; /* Maximum back reference */
930 unsigned int backref_map; /* Bitmap of low back refs */
931 int external_options; /* External (initial) options */
932 int req_varyopt; /* "After variable item" flag for reqbyte */
933 BOOL nopartial; /* Set TRUE if partial won't work */
934 int nltype; /* Newline type */
935 int nllen; /* Newline string length */
936 uschar nl[4]; /* Newline string when fixed length */
937 } compile_data;
938
939 /* Structure for maintaining a chain of pointers to the currently incomplete
940 branches, for testing for left recursion. */
941
942 typedef struct branch_chain {
943 struct branch_chain *outer;
944 uschar *current;
945 } branch_chain;
946
947 /* Structure for items in a linked list that represents an explicit recursive
948 call within the pattern. */
949
950 typedef struct recursion_info {
951 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
952 int group_num; /* Number of group that was called */
953 const uschar *after_call; /* "Return value": points after the call in the expr */
954 USPTR save_start; /* Old value of mstart */
955 int *offset_save; /* Pointer to start of saved offsets */
956 int saved_max; /* Number of saved offsets */
957 } recursion_info;
958
959 /* Structure for building a chain of data for holding the values of the subject
960 pointer at the start of each subpattern, so as to detect when an empty string
961 has been matched by a subpattern - to break infinite loops. */
962
963 typedef struct eptrblock {
964 struct eptrblock *epb_prev;
965 USPTR epb_saved_eptr;
966 } eptrblock;
967
968
969 /* Structure for passing "static" information around between the functions
970 doing traditional NFA matching, so that they are thread-safe. */
971
972 typedef struct match_data {
973 unsigned long int match_call_count; /* As it says */
974 unsigned long int match_limit; /* As it says */
975 unsigned long int match_limit_recursion; /* As it says */
976 int *offset_vector; /* Offset vector */
977 int offset_end; /* One past the end */
978 int offset_max; /* The maximum usable for return data */
979 int nltype; /* Newline type */
980 int nllen; /* Newline string length */
981 uschar nl[4]; /* Newline string when fixed */
982 const uschar *lcc; /* Points to lower casing table */
983 const uschar *ctypes; /* Points to table of type maps */
984 BOOL offset_overflow; /* Set if too many extractions */
985 BOOL notbol; /* NOTBOL flag */
986 BOOL noteol; /* NOTEOL flag */
987 BOOL utf8; /* UTF8 flag */
988 BOOL endonly; /* Dollar not before final \n */
989 BOOL notempty; /* Empty string match not wanted */
990 BOOL partial; /* PARTIAL flag */
991 BOOL hitend; /* Hit the end of the subject at some point */
992 const uschar *start_code; /* For use when recursing */
993 USPTR start_subject; /* Start of the subject string */
994 USPTR end_subject; /* End of the subject string */
995 USPTR start_match_ptr; /* Start of matched string */
996 USPTR end_match_ptr; /* Subject position at end match */
997 int end_offset_top; /* Highwater mark at end of match */
998 int capture_last; /* Most recent capture number */
999 int start_offset; /* The start offset value */
1000 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1001 int eptrn; /* Next free eptrblock */
1002 recursion_info *recursive; /* Linked list of recursion data */
1003 void *callout_data; /* To pass back to callouts */
1004 } match_data;
1005
1006 /* A similar structure is used for the same purpose by the DFA matching
1007 functions. */
1008
1009 typedef struct dfa_match_data {
1010 const uschar *start_code; /* Start of the compiled pattern */
1011 const uschar *start_subject; /* Start of the subject string */
1012 const uschar *end_subject; /* End of subject string */
1013 const uschar *tables; /* Character tables */
1014 int moptions; /* Match options */
1015 int poptions; /* Pattern options */
1016 int nltype; /* Newline type */
1017 int nllen; /* Newline string length */
1018 uschar nl[4]; /* Newline string when fixed */
1019 void *callout_data; /* To pass back to callouts */
1020 } dfa_match_data;
1021
1022 /* Bit definitions for entries in the pcre_ctypes table. */
1023
1024 #define ctype_space 0x01
1025 #define ctype_letter 0x02
1026 #define ctype_digit 0x04
1027 #define ctype_xdigit 0x08
1028 #define ctype_word 0x10 /* alphameric or '_' */
1029 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1030
1031 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1032 of bits for a class map. Some classes are built by combining these tables. */
1033
1034 #define cbit_space 0 /* [:space:] or \s */
1035 #define cbit_xdigit 32 /* [:xdigit:] */
1036 #define cbit_digit 64 /* [:digit:] or \d */
1037 #define cbit_upper 96 /* [:upper:] */
1038 #define cbit_lower 128 /* [:lower:] */
1039 #define cbit_word 160 /* [:word:] or \w */
1040 #define cbit_graph 192 /* [:graph:] */
1041 #define cbit_print 224 /* [:print:] */
1042 #define cbit_punct 256 /* [:punct:] */
1043 #define cbit_cntrl 288 /* [:cntrl:] */
1044 #define cbit_length 320 /* Length of the cbits table */
1045
1046 /* Offsets of the various tables from the base tables pointer, and
1047 total length. */
1048
1049 #define lcc_offset 0
1050 #define fcc_offset 256
1051 #define cbits_offset 512
1052 #define ctypes_offset (cbits_offset + cbit_length)
1053 #define tables_length (ctypes_offset + 256)
1054
1055 /* Layout of the UCP type table that translates property names into types and
1056 codes. */
1057
1058 typedef struct {
1059 const char *name;
1060 pcre_uint16 type;
1061 pcre_uint16 value;
1062 } ucp_type_table;
1063
1064
1065 /* Internal shared data tables. These are tables that are used by more than one
1066 of the exported public functions. They have to be "external" in the C sense,
1067 but are not part of the PCRE public API. The data for these tables is in the
1068 pcre_tables.c module. */
1069
1070 extern const int _pcre_utf8_table1[];
1071 extern const int _pcre_utf8_table2[];
1072 extern const int _pcre_utf8_table3[];
1073 extern const uschar _pcre_utf8_table4[];
1074
1075 extern const int _pcre_utf8_table1_size;
1076
1077 extern const ucp_type_table _pcre_utt[];
1078 extern const int _pcre_utt_size;
1079
1080 extern const uschar _pcre_default_tables[];
1081
1082 extern const uschar _pcre_OP_lengths[];
1083
1084
1085 /* Internal shared functions. These are functions that are used by more than
1086 one of the exported public functions. They have to be "external" in the C
1087 sense, but are not part of the PCRE public API. */
1088
1089 extern BOOL _pcre_is_newline(const uschar *, int, const uschar *,
1090 int *, BOOL);
1091 extern int _pcre_ord2utf8(int, uschar *);
1092 extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1093 const pcre_study_data *, pcre_study_data *);
1094 extern int _pcre_ucp_findprop(const unsigned int, int *, int *);
1095 extern unsigned int _pcre_ucp_othercase(const unsigned int);
1096 extern int _pcre_valid_utf8(const uschar *, int);
1097 extern BOOL _pcre_was_newline(const uschar *, int, const uschar *,
1098 int *, BOOL);
1099 extern BOOL _pcre_xclass(int, const uschar *);
1100
1101 #endif
1102
1103 /* End of pcre_internal.h */

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