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Revision 226 - (show annotations) (download)
Tue Aug 21 11:46:08 2007 UTC (7 years, 2 months ago) by ph10
File MIME type: text/plain
File size: 45631 byte(s)
Don't advance by 2 if explicit \r or \n in the pattern. Add 
PCRE_INFO_HASCRORLF.

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 /* Standard C headers plus the external interface definition. The only time
71 setjmp and stdarg are used is when NO_RECURSE is set. */
72
73 #include <ctype.h>
74 #include <limits.h>
75 #include <setjmp.h>
76 #include <stdarg.h>
77 #include <stddef.h>
78 #include <stdio.h>
79 #include <stdlib.h>
80 #include <string.h>
81
82 /* When compiling a DLL for Windows, the exported symbols have to be declared
83 using some MS magic. I found some useful information on this web page:
84 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
85 information there, using __declspec(dllexport) without "extern" we have a
86 definition; with "extern" we have a declaration. The settings here override the
87 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
88 which is all that is needed for applications (they just import the symbols). We
89 use:
90
91 PCRE_EXP_DECL for declarations
92 PCRE_EXP_DEFN for definitions of exported functions
93 PCRE_EXP_DATA_DEFN for definitions of exported variables
94
95 The reason for the two DEFN macros is that in non-Windows environments, one
96 does not want to have "extern" before variable definitions because it leads to
97 compiler warnings. So we distinguish between functions and variables. In
98 Windows, the two should always be the same.
99
100 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
101 which is an application, but needs to import this file in order to "peek" at
102 internals, can #include pcre.h first to get an application's-eye view.
103
104 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
105 special-purpose environments) might want to stick other stuff in front of
106 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
107 PCRE_EXP_DATA_DEFN only if they are not already set. */
108
109 #ifndef PCRE_EXP_DECL
110 # ifdef _WIN32
111 # ifndef PCRE_STATIC
112 # define PCRE_EXP_DECL extern __declspec(dllexport)
113 # define PCRE_EXP_DEFN __declspec(dllexport)
114 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
115 # else
116 # define PCRE_EXP_DECL extern
117 # define PCRE_EXP_DEFN
118 # define PCRE_EXP_DATA_DEFN
119 # endif
120 # else
121 # ifdef __cplusplus
122 # define PCRE_EXP_DECL extern "C"
123 # else
124 # define PCRE_EXP_DECL extern
125 # endif
126 # ifndef PCRE_EXP_DEFN
127 # define PCRE_EXP_DEFN PCRE_EXP_DECL
128 # endif
129 # ifndef PCRE_EXP_DATA_DEFN
130 # define PCRE_EXP_DATA_DEFN
131 # endif
132 # endif
133 #endif
134
135 /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
136 cannot determine these outside the compilation (e.g. by running a program as
137 part of "configure") because PCRE is often cross-compiled for use on other
138 systems. Instead we make use of the maximum sizes that are available at
139 preprocessor time in standard C environments. */
140
141 #if USHRT_MAX == 65535
142 typedef unsigned short pcre_uint16;
143 #elif UINT_MAX == 65535
144 typedef unsigned int pcre_uint16;
145 #else
146 #error Cannot determine a type for 16-bit unsigned integers
147 #endif
148
149 #if UINT_MAX == 4294967295
150 typedef unsigned int pcre_uint32;
151 #elif ULONG_MAX == 4294967295
152 typedef unsigned long int pcre_uint32;
153 #else
154 #error Cannot determine a type for 32-bit unsigned integers
155 #endif
156
157 /* All character handling must be done as unsigned characters. Otherwise there
158 are problems with top-bit-set characters and functions such as isspace().
159 However, we leave the interface to the outside world as char *, because that
160 should make things easier for callers. We define a short type for unsigned char
161 to save lots of typing. I tried "uchar", but it causes problems on Digital
162 Unix, where it is defined in sys/types, so use "uschar" instead. */
163
164 typedef unsigned char uschar;
165
166 /* This is an unsigned int value that no character can ever have. UTF-8
167 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
168 0x0010ffff). */
169
170 #define NOTACHAR 0xffffffff
171
172 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
173 "any" and "anycrlf" at present). The following macros are used to package up
174 testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
175 modules to indicate in which datablock the parameters exist, and what the
176 start/end of string field names are. */
177
178 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
179 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
180 #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
181
182 /* This macro checks for a newline at the given position */
183
184 #define IS_NEWLINE(p) \
185 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
186 ((p) < NLBLOCK->PSEND && \
187 _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\
188 utf8)) \
189 : \
190 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
191 (p)[0] == NLBLOCK->nl[0] && \
192 (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
193 ) \
194 )
195
196 /* This macro checks for a newline immediately preceding the given position */
197
198 #define WAS_NEWLINE(p) \
199 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
200 ((p) > NLBLOCK->PSSTART && \
201 _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
202 &(NLBLOCK->nllen), utf8)) \
203 : \
204 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
205 (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
206 (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
207 ) \
208 )
209
210 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
211 with a custom type. This makes it possible, for example, to allow pcre_exec()
212 to process subject strings that are discontinuous by using a smart pointer
213 class. It must always be possible to inspect all of the subject string in
214 pcre_exec() because of the way it backtracks. Two macros are required in the
215 normal case, for sign-unspecified and unsigned char pointers. The former is
216 used for the external interface and appears in pcre.h, which is why its name
217 must begin with PCRE_. */
218
219 #ifdef CUSTOM_SUBJECT_PTR
220 #define PCRE_SPTR CUSTOM_SUBJECT_PTR
221 #define USPTR CUSTOM_SUBJECT_PTR
222 #else
223 #define PCRE_SPTR const char *
224 #define USPTR const unsigned char *
225 #endif
226
227
228
229 /* Include the public PCRE header and the definitions of UCP character property
230 values. */
231
232 #include "pcre.h"
233 #include "ucp.h"
234
235 /* When compiling for use with the Virtual Pascal compiler, these functions
236 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
237 option on the command line. */
238
239 #ifdef VPCOMPAT
240 #define strlen(s) _strlen(s)
241 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
242 #define memcmp(s,c,n) _memcmp(s,c,n)
243 #define memcpy(d,s,n) _memcpy(d,s,n)
244 #define memmove(d,s,n) _memmove(d,s,n)
245 #define memset(s,c,n) _memset(s,c,n)
246 #else /* VPCOMPAT */
247
248 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
249 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
250 is set. Otherwise, include an emulating function for those systems that have
251 neither (there some non-Unix environments where this is the case). */
252
253 #ifndef HAVE_MEMMOVE
254 #undef memmove /* some systems may have a macro */
255 #ifdef HAVE_BCOPY
256 #define memmove(a, b, c) bcopy(b, a, c)
257 #else /* HAVE_BCOPY */
258 static void *
259 pcre_memmove(void *d, const void *s, size_t n)
260 {
261 size_t i;
262 unsigned char *dest = (unsigned char *)d;
263 const unsigned char *src = (const unsigned char *)s;
264 if (dest > src)
265 {
266 dest += n;
267 src += n;
268 for (i = 0; i < n; ++i) *(--dest) = *(--src);
269 return (void *)dest;
270 }
271 else
272 {
273 for (i = 0; i < n; ++i) *dest++ = *src++;
274 return (void *)(dest - n);
275 }
276 }
277 #define memmove(a, b, c) pcre_memmove(a, b, c)
278 #endif /* not HAVE_BCOPY */
279 #endif /* not HAVE_MEMMOVE */
280 #endif /* not VPCOMPAT */
281
282
283 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
284 in big-endian order) by default. These are used, for example, to link from the
285 start of a subpattern to its alternatives and its end. The use of 2 bytes per
286 offset limits the size of the compiled regex to around 64K, which is big enough
287 for almost everybody. However, I received a request for an even bigger limit.
288 For this reason, and also to make the code easier to maintain, the storing and
289 loading of offsets from the byte string is now handled by the macros that are
290 defined here.
291
292 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
293 the config.h file, but can be overridden by using -D on the command line. This
294 is automated on Unix systems via the "configure" command. */
295
296 #if LINK_SIZE == 2
297
298 #define PUT(a,n,d) \
299 (a[n] = (d) >> 8), \
300 (a[(n)+1] = (d) & 255)
301
302 #define GET(a,n) \
303 (((a)[n] << 8) | (a)[(n)+1])
304
305 #define MAX_PATTERN_SIZE (1 << 16)
306
307
308 #elif LINK_SIZE == 3
309
310 #define PUT(a,n,d) \
311 (a[n] = (d) >> 16), \
312 (a[(n)+1] = (d) >> 8), \
313 (a[(n)+2] = (d) & 255)
314
315 #define GET(a,n) \
316 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
317
318 #define MAX_PATTERN_SIZE (1 << 24)
319
320
321 #elif LINK_SIZE == 4
322
323 #define PUT(a,n,d) \
324 (a[n] = (d) >> 24), \
325 (a[(n)+1] = (d) >> 16), \
326 (a[(n)+2] = (d) >> 8), \
327 (a[(n)+3] = (d) & 255)
328
329 #define GET(a,n) \
330 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
331
332 #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */
333
334
335 #else
336 #error LINK_SIZE must be either 2, 3, or 4
337 #endif
338
339
340 /* Convenience macro defined in terms of the others */
341
342 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
343
344
345 /* PCRE uses some other 2-byte quantities that do not change when the size of
346 offsets changes. There are used for repeat counts and for other things such as
347 capturing parenthesis numbers in back references. */
348
349 #define PUT2(a,n,d) \
350 a[n] = (d) >> 8; \
351 a[(n)+1] = (d) & 255
352
353 #define GET2(a,n) \
354 (((a)[n] << 8) | (a)[(n)+1])
355
356 #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2
357
358
359 /* When UTF-8 encoding is being used, a character is no longer just a single
360 byte. The macros for character handling generate simple sequences when used in
361 byte-mode, and more complicated ones for UTF-8 characters. BACKCHAR should
362 never be called in byte mode. To make sure it can never even appear when UTF-8
363 support is omitted, we don't even define it. */
364
365 #ifndef SUPPORT_UTF8
366 #define GETCHAR(c, eptr) c = *eptr;
367 #define GETCHARTEST(c, eptr) c = *eptr;
368 #define GETCHARINC(c, eptr) c = *eptr++;
369 #define GETCHARINCTEST(c, eptr) c = *eptr++;
370 #define GETCHARLEN(c, eptr, len) c = *eptr;
371 /* #define BACKCHAR(eptr) */
372
373 #else /* SUPPORT_UTF8 */
374
375 /* Get the next UTF-8 character, not advancing the pointer. This is called when
376 we know we are in UTF-8 mode. */
377
378 #define GETCHAR(c, eptr) \
379 c = *eptr; \
380 if (c >= 0xc0) \
381 { \
382 int gcii; \
383 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
384 int gcss = 6*gcaa; \
385 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
386 for (gcii = 1; gcii <= gcaa; gcii++) \
387 { \
388 gcss -= 6; \
389 c |= (eptr[gcii] & 0x3f) << gcss; \
390 } \
391 }
392
393 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
394 pointer. */
395
396 #define GETCHARTEST(c, eptr) \
397 c = *eptr; \
398 if (utf8 && c >= 0xc0) \
399 { \
400 int gcii; \
401 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
402 int gcss = 6*gcaa; \
403 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
404 for (gcii = 1; gcii <= gcaa; gcii++) \
405 { \
406 gcss -= 6; \
407 c |= (eptr[gcii] & 0x3f) << gcss; \
408 } \
409 }
410
411 /* Get the next UTF-8 character, advancing the pointer. This is called when we
412 know we are in UTF-8 mode. */
413
414 #define GETCHARINC(c, eptr) \
415 c = *eptr++; \
416 if (c >= 0xc0) \
417 { \
418 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
419 int gcss = 6*gcaa; \
420 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
421 while (gcaa-- > 0) \
422 { \
423 gcss -= 6; \
424 c |= (*eptr++ & 0x3f) << gcss; \
425 } \
426 }
427
428 /* Get the next character, testing for UTF-8 mode, and advancing the pointer */
429
430 #define GETCHARINCTEST(c, eptr) \
431 c = *eptr++; \
432 if (utf8 && c >= 0xc0) \
433 { \
434 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
435 int gcss = 6*gcaa; \
436 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
437 while (gcaa-- > 0) \
438 { \
439 gcss -= 6; \
440 c |= (*eptr++ & 0x3f) << gcss; \
441 } \
442 }
443
444 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
445 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
446
447 #define GETCHARLEN(c, eptr, len) \
448 c = *eptr; \
449 if (c >= 0xc0) \
450 { \
451 int gcii; \
452 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
453 int gcss = 6*gcaa; \
454 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
455 for (gcii = 1; gcii <= gcaa; gcii++) \
456 { \
457 gcss -= 6; \
458 c |= (eptr[gcii] & 0x3f) << gcss; \
459 } \
460 len += gcaa; \
461 }
462
463 /* If the pointer is not at the start of a character, move it back until
464 it is. This is called only in UTF-8 mode - we don't put a test within the macro
465 because almost all calls are already within a block of UTF-8 only code. */
466
467 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
468
469 #endif
470
471
472 /* In case there is no definition of offsetof() provided - though any proper
473 Standard C system should have one. */
474
475 #ifndef offsetof
476 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
477 #endif
478
479
480 /* These are the public options that can change during matching. */
481
482 #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
483
484 /* Private options flags start at the most significant end of the four bytes.
485 The public options defined in pcre.h start at the least significant end. Make
486 sure they don't overlap! The bits are getting a bit scarce now -- when we run
487 out, there is a dummy word in the structure that could be used for the private
488 bits. */
489
490 #define PCRE_NOPARTIAL 0x80000000 /* can't use partial with this regex */
491 #define PCRE_FIRSTSET 0x40000000 /* first_byte is set */
492 #define PCRE_REQCHSET 0x20000000 /* req_byte is set */
493 #define PCRE_STARTLINE 0x10000000 /* start after \n for multiline */
494 #define PCRE_JCHANGED 0x08000000 /* j option changes within regex */
495 #define PCRE_HASCRORLF 0x04000000 /* explicit \r or \n in pattern */
496
497 /* Options for the "extra" block produced by pcre_study(). */
498
499 #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
500
501 /* Masks for identifying the public options that are permitted at compile
502 time, run time, or study time, respectively. */
503
504 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
505 PCRE_NEWLINE_ANYCRLF)
506
507 #define PUBLIC_OPTIONS \
508 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
509 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
510 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
511 PCRE_DUPNAMES|PCRE_NEWLINE_BITS)
512
513 #define PUBLIC_EXEC_OPTIONS \
514 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
515 PCRE_PARTIAL|PCRE_NEWLINE_BITS)
516
517 #define PUBLIC_DFA_EXEC_OPTIONS \
518 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
519 PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS)
520
521 #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
522
523 /* Magic number to provide a small check against being handed junk. Also used
524 to detect whether a pattern was compiled on a host of different endianness. */
525
526 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
527
528 /* Negative values for the firstchar and reqchar variables */
529
530 #define REQ_UNSET (-2)
531 #define REQ_NONE (-1)
532
533 /* The maximum remaining length of subject we are prepared to search for a
534 req_byte match. */
535
536 #define REQ_BYTE_MAX 1000
537
538 /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
539 variable-length repeat, or a anything other than literal characters. */
540
541 #define REQ_CASELESS 0x0100 /* indicates caselessness */
542 #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
543
544 /* Miscellaneous definitions */
545
546 typedef int BOOL;
547
548 #define FALSE 0
549 #define TRUE 1
550
551 /* Escape items that are just an encoding of a particular data value. */
552
553 #ifndef ESC_e
554 #define ESC_e 27
555 #endif
556
557 #ifndef ESC_f
558 #define ESC_f '\f'
559 #endif
560
561 #ifndef ESC_n
562 #define ESC_n '\n'
563 #endif
564
565 #ifndef ESC_r
566 #define ESC_r '\r'
567 #endif
568
569 /* We can't officially use ESC_t because it is a POSIX reserved identifier
570 (presumably because of all the others like size_t). */
571
572 #ifndef ESC_tee
573 #define ESC_tee '\t'
574 #endif
575
576 /* Codes for different types of Unicode property */
577
578 #define PT_ANY 0 /* Any property - matches all chars */
579 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
580 #define PT_GC 2 /* General characteristic (e.g. L) */
581 #define PT_PC 3 /* Particular characteristic (e.g. Lu) */
582 #define PT_SC 4 /* Script (e.g. Han) */
583
584 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
585 contain UTF-8 characters with values greater than 255. */
586
587 #define XCL_NOT 0x01 /* Flag: this is a negative class */
588 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
589
590 #define XCL_END 0 /* Marks end of individual items */
591 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
592 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
593 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
594 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
595
596 /* These are escaped items that aren't just an encoding of a particular data
597 value such as \n. They must have non-zero values, as check_escape() returns
598 their negation. Also, they must appear in the same order as in the opcode
599 definitions below, up to ESC_z. There's a dummy for OP_ANY because it
600 corresponds to "." rather than an escape sequence. The final one must be
601 ESC_REF as subsequent values are used for backreferences (\1, \2, \3, etc).
602 There are two tests in the code for an escape greater than ESC_b and less than
603 ESC_Z to detect the types that may be repeated. These are the types that
604 consume characters. If any new escapes are put in between that don't consume a
605 character, that code will have to change. */
606
607 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
608 ESC_W, ESC_w, ESC_dum1, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H, ESC_h,
609 ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_k, ESC_REF };
610
611
612 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
613 OP_EOD must correspond in order to the list of escapes immediately above.
614
615 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
616 that follow must also be updated to match. There is also a table called
617 "coptable" in pcre_dfa_exec.c that must be updated. */
618
619 enum {
620 OP_END, /* 0 End of pattern */
621
622 /* Values corresponding to backslashed metacharacters */
623
624 OP_SOD, /* 1 Start of data: \A */
625 OP_SOM, /* 2 Start of match (subject + offset): \G */
626 OP_SET_SOM, /* 3 Set start of match (\K) */
627 OP_NOT_WORD_BOUNDARY, /* 4 \B */
628 OP_WORD_BOUNDARY, /* 5 \b */
629 OP_NOT_DIGIT, /* 6 \D */
630 OP_DIGIT, /* 7 \d */
631 OP_NOT_WHITESPACE, /* 8 \S */
632 OP_WHITESPACE, /* 9 \s */
633 OP_NOT_WORDCHAR, /* 10 \W */
634 OP_WORDCHAR, /* 11 \w */
635 OP_ANY, /* 12 Match any character */
636 OP_ANYBYTE, /* 13 Match any byte (\C); different to OP_ANY for UTF-8 */
637 OP_NOTPROP, /* 14 \P (not Unicode property) */
638 OP_PROP, /* 15 \p (Unicode property) */
639 OP_ANYNL, /* 16 \R (any newline sequence) */
640 OP_NOT_HSPACE, /* 17 \H (not horizontal whitespace) */
641 OP_HSPACE, /* 18 \h (horizontal whitespace) */
642 OP_NOT_VSPACE, /* 19 \V (not vertical whitespace) */
643 OP_VSPACE, /* 20 \v (vertical whitespace) */
644 OP_EXTUNI, /* 21 \X (extended Unicode sequence */
645 OP_EODN, /* 22 End of data or \n at end of data: \Z. */
646 OP_EOD, /* 23 End of data: \z */
647
648 OP_OPT, /* 24 Set runtime options */
649 OP_CIRC, /* 25 Start of line - varies with multiline switch */
650 OP_DOLL, /* 26 End of line - varies with multiline switch */
651 OP_CHAR, /* 27 Match one character, casefully */
652 OP_CHARNC, /* 28 Match one character, caselessly */
653 OP_NOT, /* 29 Match one character, not the following one */
654
655 OP_STAR, /* 30 The maximizing and minimizing versions of */
656 OP_MINSTAR, /* 31 these six opcodes must come in pairs, with */
657 OP_PLUS, /* 32 the minimizing one second. */
658 OP_MINPLUS, /* 33 This first set applies to single characters.*/
659 OP_QUERY, /* 34 */
660 OP_MINQUERY, /* 35 */
661
662 OP_UPTO, /* 36 From 0 to n matches */
663 OP_MINUPTO, /* 37 */
664 OP_EXACT, /* 38 Exactly n matches */
665
666 OP_POSSTAR, /* 39 Possessified star */
667 OP_POSPLUS, /* 40 Possessified plus */
668 OP_POSQUERY, /* 41 Posesssified query */
669 OP_POSUPTO, /* 42 Possessified upto */
670
671 OP_NOTSTAR, /* 43 The maximizing and minimizing versions of */
672 OP_NOTMINSTAR, /* 44 these six opcodes must come in pairs, with */
673 OP_NOTPLUS, /* 45 the minimizing one second. They must be in */
674 OP_NOTMINPLUS, /* 46 exactly the same order as those above. */
675 OP_NOTQUERY, /* 47 This set applies to "not" single characters. */
676 OP_NOTMINQUERY, /* 48 */
677
678 OP_NOTUPTO, /* 49 From 0 to n matches */
679 OP_NOTMINUPTO, /* 50 */
680 OP_NOTEXACT, /* 51 Exactly n matches */
681
682 OP_NOTPOSSTAR, /* 52 Possessified versions */
683 OP_NOTPOSPLUS, /* 53 */
684 OP_NOTPOSQUERY, /* 54 */
685 OP_NOTPOSUPTO, /* 55 */
686
687 OP_TYPESTAR, /* 56 The maximizing and minimizing versions of */
688 OP_TYPEMINSTAR, /* 57 these six opcodes must come in pairs, with */
689 OP_TYPEPLUS, /* 58 the minimizing one second. These codes must */
690 OP_TYPEMINPLUS, /* 59 be in exactly the same order as those above. */
691 OP_TYPEQUERY, /* 60 This set applies to character types such as \d */
692 OP_TYPEMINQUERY, /* 61 */
693
694 OP_TYPEUPTO, /* 62 From 0 to n matches */
695 OP_TYPEMINUPTO, /* 63 */
696 OP_TYPEEXACT, /* 64 Exactly n matches */
697
698 OP_TYPEPOSSTAR, /* 65 Possessified versions */
699 OP_TYPEPOSPLUS, /* 66 */
700 OP_TYPEPOSQUERY, /* 67 */
701 OP_TYPEPOSUPTO, /* 68 */
702
703 OP_CRSTAR, /* 69 The maximizing and minimizing versions of */
704 OP_CRMINSTAR, /* 70 all these opcodes must come in pairs, with */
705 OP_CRPLUS, /* 71 the minimizing one second. These codes must */
706 OP_CRMINPLUS, /* 72 be in exactly the same order as those above. */
707 OP_CRQUERY, /* 73 These are for character classes and back refs */
708 OP_CRMINQUERY, /* 74 */
709 OP_CRRANGE, /* 75 These are different to the three sets above. */
710 OP_CRMINRANGE, /* 76 */
711
712 OP_CLASS, /* 77 Match a character class, chars < 256 only */
713 OP_NCLASS, /* 78 Same, but the bitmap was created from a negative
714 class - the difference is relevant only when a UTF-8
715 character > 255 is encountered. */
716
717 OP_XCLASS, /* 79 Extended class for handling UTF-8 chars within the
718 class. This does both positive and negative. */
719
720 OP_REF, /* 80 Match a back reference */
721 OP_RECURSE, /* 81 Match a numbered subpattern (possibly recursive) */
722 OP_CALLOUT, /* 82 Call out to external function if provided */
723
724 OP_ALT, /* 83 Start of alternation */
725 OP_KET, /* 84 End of group that doesn't have an unbounded repeat */
726 OP_KETRMAX, /* 85 These two must remain together and in this */
727 OP_KETRMIN, /* 86 order. They are for groups the repeat for ever. */
728
729 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
730
731 OP_ASSERT, /* 87 Positive lookahead */
732 OP_ASSERT_NOT, /* 88 Negative lookahead */
733 OP_ASSERTBACK, /* 89 Positive lookbehind */
734 OP_ASSERTBACK_NOT, /* 90 Negative lookbehind */
735 OP_REVERSE, /* 91 Move pointer back - used in lookbehind assertions */
736
737 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
738 as there's a test for >= ONCE for a subpattern that isn't an assertion. */
739
740 OP_ONCE, /* 92 Atomic group */
741 OP_BRA, /* 93 Start of non-capturing bracket */
742 OP_CBRA, /* 94 Start of capturing bracket */
743 OP_COND, /* 95 Conditional group */
744
745 /* These three must follow the previous three, in the same order. There's a
746 check for >= SBRA to distinguish the two sets. */
747
748 OP_SBRA, /* 96 Start of non-capturing bracket, check empty */
749 OP_SCBRA, /* 97 Start of capturing bracket, check empty */
750 OP_SCOND, /* 98 Conditional group, check empty */
751
752 OP_CREF, /* 99 Used to hold a capture number as condition */
753 OP_RREF, /* 100 Used to hold a recursion number as condition */
754 OP_DEF, /* 101 The DEFINE condition */
755
756 OP_BRAZERO, /* 102 These two must remain together and in this */
757 OP_BRAMINZERO, /* 103 order. */
758
759 /* These are backtracking control verbs */
760
761 OP_PRUNE, /* 104 */
762 OP_SKIP, /* 105 */
763 OP_THEN, /* 106 */
764 OP_COMMIT, /* 107 */
765
766 /* These are forced failure and success verbs */
767
768 OP_FAIL, /* 108 */
769 OP_ACCEPT /* 109 */
770 };
771
772
773 /* This macro defines textual names for all the opcodes. These are used only
774 for debugging. The macro is referenced only in pcre_printint.c. */
775
776 #define OP_NAME_LIST \
777 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
778 "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte", \
779 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
780 "extuni", "\\Z", "\\z", \
781 "Opt", "^", "$", "char", "charnc", "not", \
782 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
783 "*+","++", "?+", "{", \
784 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
785 "*+","++", "?+", "{", \
786 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
787 "*+","++", "?+", "{", \
788 "*", "*?", "+", "+?", "?", "??", "{", "{", \
789 "class", "nclass", "xclass", "Ref", "Recurse", "Callout", \
790 "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
791 "AssertB", "AssertB not", "Reverse", \
792 "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond", \
793 "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero", \
794 "*PRUNE", "*SKIP", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT"
795
796
797 /* This macro defines the length of fixed length operations in the compiled
798 regex. The lengths are used when searching for specific things, and also in the
799 debugging printing of a compiled regex. We use a macro so that it can be
800 defined close to the definitions of the opcodes themselves.
801
802 As things have been extended, some of these are no longer fixed lenths, but are
803 minima instead. For example, the length of a single-character repeat may vary
804 in UTF-8 mode. The code that uses this table must know about such things. */
805
806 #define OP_LENGTHS \
807 1, /* End */ \
808 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
809 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
810 1, 1, /* Any, Anybyte */ \
811 3, 3, 1, /* NOTPROP, PROP, EXTUNI */ \
812 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
813 1, 1, 2, 1, 1, /* \Z, \z, Opt, ^, $ */ \
814 2, /* Char - the minimum length */ \
815 2, /* Charnc - the minimum length */ \
816 2, /* not */ \
817 /* Positive single-char repeats ** These are */ \
818 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
819 4, 4, 4, /* upto, minupto, exact ** UTF-8 mode */ \
820 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
821 /* Negative single-char repeats - only for chars < 256 */ \
822 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
823 4, 4, 4, /* NOT upto, minupto, exact */ \
824 2, 2, 2, 4, /* Possessive *, +, ?, upto */ \
825 /* Positive type repeats */ \
826 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
827 4, 4, 4, /* Type upto, minupto, exact */ \
828 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
829 /* Character class & ref repeats */ \
830 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
831 5, 5, /* CRRANGE, CRMINRANGE */ \
832 33, /* CLASS */ \
833 33, /* NCLASS */ \
834 0, /* XCLASS - variable length */ \
835 3, /* REF */ \
836 1+LINK_SIZE, /* RECURSE */ \
837 2+2*LINK_SIZE, /* CALLOUT */ \
838 1+LINK_SIZE, /* Alt */ \
839 1+LINK_SIZE, /* Ket */ \
840 1+LINK_SIZE, /* KetRmax */ \
841 1+LINK_SIZE, /* KetRmin */ \
842 1+LINK_SIZE, /* Assert */ \
843 1+LINK_SIZE, /* Assert not */ \
844 1+LINK_SIZE, /* Assert behind */ \
845 1+LINK_SIZE, /* Assert behind not */ \
846 1+LINK_SIZE, /* Reverse */ \
847 1+LINK_SIZE, /* ONCE */ \
848 1+LINK_SIZE, /* BRA */ \
849 3+LINK_SIZE, /* CBRA */ \
850 1+LINK_SIZE, /* COND */ \
851 1+LINK_SIZE, /* SBRA */ \
852 3+LINK_SIZE, /* SCBRA */ \
853 1+LINK_SIZE, /* SCOND */ \
854 3, /* CREF */ \
855 3, /* RREF */ \
856 1, /* DEF */ \
857 1, 1, /* BRAZERO, BRAMINZERO */ \
858 1, 1, 1, 1, /* PRUNE, SKIP, THEN, COMMIT, */ \
859 1, 1 /* FAIL, ACCEPT */
860
861
862 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
863
864 #define RREF_ANY 0xffff
865
866 /* Error code numbers. They are given names so that they can more easily be
867 tracked. */
868
869 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
870 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
871 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
872 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
873 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
874 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
875 ERR60, ERR61 };
876
877 /* The real format of the start of the pcre block; the index of names and the
878 code vector run on as long as necessary after the end. We store an explicit
879 offset to the name table so that if a regex is compiled on one host, saved, and
880 then run on another where the size of pointers is different, all might still
881 be well. For the case of compiled-on-4 and run-on-8, we include an extra
882 pointer that is always NULL. For future-proofing, a few dummy fields were
883 originally included - even though you can never get this planning right - but
884 there is only one left now.
885
886 NOTE NOTE NOTE:
887 Because people can now save and re-use compiled patterns, any additions to this
888 structure should be made at the end, and something earlier (e.g. a new
889 flag in the options or one of the dummy fields) should indicate that the new
890 fields are present. Currently PCRE always sets the dummy fields to zero.
891 NOTE NOTE NOTE:
892 */
893
894 typedef struct real_pcre {
895 pcre_uint32 magic_number;
896 pcre_uint32 size; /* Total that was malloced */
897 pcre_uint32 options;
898 pcre_uint32 dummy1; /* For future use, maybe */
899
900 pcre_uint16 top_bracket;
901 pcre_uint16 top_backref;
902 pcre_uint16 first_byte;
903 pcre_uint16 req_byte;
904 pcre_uint16 name_table_offset; /* Offset to name table that follows */
905 pcre_uint16 name_entry_size; /* Size of any name items */
906 pcre_uint16 name_count; /* Number of name items */
907 pcre_uint16 ref_count; /* Reference count */
908
909 const unsigned char *tables; /* Pointer to tables or NULL for std */
910 const unsigned char *nullpad; /* NULL padding */
911 } real_pcre;
912
913 /* The format of the block used to store data from pcre_study(). The same
914 remark (see NOTE above) about extending this structure applies. */
915
916 typedef struct pcre_study_data {
917 pcre_uint32 size; /* Total that was malloced */
918 pcre_uint32 options;
919 uschar start_bits[32];
920 } pcre_study_data;
921
922 /* Structure for passing "static" information around between the functions
923 doing the compiling, so that they are thread-safe. */
924
925 typedef struct compile_data {
926 const uschar *lcc; /* Points to lower casing table */
927 const uschar *fcc; /* Points to case-flipping table */
928 const uschar *cbits; /* Points to character type table */
929 const uschar *ctypes; /* Points to table of type maps */
930 const uschar *start_workspace;/* The start of working space */
931 const uschar *start_code; /* The start of the compiled code */
932 const uschar *start_pattern; /* The start of the pattern */
933 const uschar *end_pattern; /* The end of the pattern */
934 uschar *hwm; /* High watermark of workspace */
935 uschar *name_table; /* The name/number table */
936 int names_found; /* Number of entries so far */
937 int name_entry_size; /* Size of each entry */
938 int bracount; /* Count of capturing parens */
939 int top_backref; /* Maximum back reference */
940 unsigned int backref_map; /* Bitmap of low back refs */
941 int external_options; /* External (initial) options */
942 int req_varyopt; /* "After variable item" flag for reqbyte */
943 BOOL nopartial; /* Set TRUE if partial won't work */
944 BOOL had_accept; /* (*ACCEPT) encountered */
945 int nltype; /* Newline type */
946 int nllen; /* Newline string length */
947 uschar nl[4]; /* Newline string when fixed length */
948 } compile_data;
949
950 /* Structure for maintaining a chain of pointers to the currently incomplete
951 branches, for testing for left recursion. */
952
953 typedef struct branch_chain {
954 struct branch_chain *outer;
955 uschar *current;
956 } branch_chain;
957
958 /* Structure for items in a linked list that represents an explicit recursive
959 call within the pattern. */
960
961 typedef struct recursion_info {
962 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
963 int group_num; /* Number of group that was called */
964 const uschar *after_call; /* "Return value": points after the call in the expr */
965 USPTR save_start; /* Old value of mstart */
966 int *offset_save; /* Pointer to start of saved offsets */
967 int saved_max; /* Number of saved offsets */
968 } recursion_info;
969
970 /* Structure for building a chain of data for holding the values of the subject
971 pointer at the start of each subpattern, so as to detect when an empty string
972 has been matched by a subpattern - to break infinite loops. */
973
974 typedef struct eptrblock {
975 struct eptrblock *epb_prev;
976 USPTR epb_saved_eptr;
977 } eptrblock;
978
979
980 /* Structure for passing "static" information around between the functions
981 doing traditional NFA matching, so that they are thread-safe. */
982
983 typedef struct match_data {
984 unsigned long int match_call_count; /* As it says */
985 unsigned long int match_limit; /* As it says */
986 unsigned long int match_limit_recursion; /* As it says */
987 int *offset_vector; /* Offset vector */
988 int offset_end; /* One past the end */
989 int offset_max; /* The maximum usable for return data */
990 int nltype; /* Newline type */
991 int nllen; /* Newline string length */
992 uschar nl[4]; /* Newline string when fixed */
993 const uschar *lcc; /* Points to lower casing table */
994 const uschar *ctypes; /* Points to table of type maps */
995 BOOL offset_overflow; /* Set if too many extractions */
996 BOOL notbol; /* NOTBOL flag */
997 BOOL noteol; /* NOTEOL flag */
998 BOOL utf8; /* UTF8 flag */
999 BOOL endonly; /* Dollar not before final \n */
1000 BOOL notempty; /* Empty string match not wanted */
1001 BOOL partial; /* PARTIAL flag */
1002 BOOL hitend; /* Hit the end of the subject at some point */
1003 const uschar *start_code; /* For use when recursing */
1004 USPTR start_subject; /* Start of the subject string */
1005 USPTR end_subject; /* End of the subject string */
1006 USPTR start_match_ptr; /* Start of matched string */
1007 USPTR end_match_ptr; /* Subject position at end match */
1008 int end_offset_top; /* Highwater mark at end of match */
1009 int capture_last; /* Most recent capture number */
1010 int start_offset; /* The start offset value */
1011 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1012 int eptrn; /* Next free eptrblock */
1013 recursion_info *recursive; /* Linked list of recursion data */
1014 void *callout_data; /* To pass back to callouts */
1015 } match_data;
1016
1017 /* A similar structure is used for the same purpose by the DFA matching
1018 functions. */
1019
1020 typedef struct dfa_match_data {
1021 const uschar *start_code; /* Start of the compiled pattern */
1022 const uschar *start_subject; /* Start of the subject string */
1023 const uschar *end_subject; /* End of subject string */
1024 const uschar *tables; /* Character tables */
1025 int moptions; /* Match options */
1026 int poptions; /* Pattern options */
1027 int nltype; /* Newline type */
1028 int nllen; /* Newline string length */
1029 uschar nl[4]; /* Newline string when fixed */
1030 void *callout_data; /* To pass back to callouts */
1031 } dfa_match_data;
1032
1033 /* Bit definitions for entries in the pcre_ctypes table. */
1034
1035 #define ctype_space 0x01
1036 #define ctype_letter 0x02
1037 #define ctype_digit 0x04
1038 #define ctype_xdigit 0x08
1039 #define ctype_word 0x10 /* alphameric or '_' */
1040 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1041
1042 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1043 of bits for a class map. Some classes are built by combining these tables. */
1044
1045 #define cbit_space 0 /* [:space:] or \s */
1046 #define cbit_xdigit 32 /* [:xdigit:] */
1047 #define cbit_digit 64 /* [:digit:] or \d */
1048 #define cbit_upper 96 /* [:upper:] */
1049 #define cbit_lower 128 /* [:lower:] */
1050 #define cbit_word 160 /* [:word:] or \w */
1051 #define cbit_graph 192 /* [:graph:] */
1052 #define cbit_print 224 /* [:print:] */
1053 #define cbit_punct 256 /* [:punct:] */
1054 #define cbit_cntrl 288 /* [:cntrl:] */
1055 #define cbit_length 320 /* Length of the cbits table */
1056
1057 /* Offsets of the various tables from the base tables pointer, and
1058 total length. */
1059
1060 #define lcc_offset 0
1061 #define fcc_offset 256
1062 #define cbits_offset 512
1063 #define ctypes_offset (cbits_offset + cbit_length)
1064 #define tables_length (ctypes_offset + 256)
1065
1066 /* Layout of the UCP type table that translates property names into types and
1067 codes. */
1068
1069 typedef struct {
1070 const char *name;
1071 pcre_uint16 type;
1072 pcre_uint16 value;
1073 } ucp_type_table;
1074
1075
1076 /* Internal shared data tables. These are tables that are used by more than one
1077 of the exported public functions. They have to be "external" in the C sense,
1078 but are not part of the PCRE public API. The data for these tables is in the
1079 pcre_tables.c module. */
1080
1081 extern const int _pcre_utf8_table1[];
1082 extern const int _pcre_utf8_table2[];
1083 extern const int _pcre_utf8_table3[];
1084 extern const uschar _pcre_utf8_table4[];
1085
1086 extern const int _pcre_utf8_table1_size;
1087
1088 extern const ucp_type_table _pcre_utt[];
1089 extern const int _pcre_utt_size;
1090
1091 extern const uschar _pcre_default_tables[];
1092
1093 extern const uschar _pcre_OP_lengths[];
1094
1095
1096 /* Internal shared functions. These are functions that are used by more than
1097 one of the exported public functions. They have to be "external" in the C
1098 sense, but are not part of the PCRE public API. */
1099
1100 extern BOOL _pcre_is_newline(const uschar *, int, const uschar *,
1101 int *, BOOL);
1102 extern int _pcre_ord2utf8(int, uschar *);
1103 extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1104 const pcre_study_data *, pcre_study_data *);
1105 extern int _pcre_ucp_findprop(const unsigned int, int *, int *);
1106 extern unsigned int _pcre_ucp_othercase(const unsigned int);
1107 extern int _pcre_valid_utf8(const uschar *, int);
1108 extern BOOL _pcre_was_newline(const uschar *, int, const uschar *,
1109 int *, BOOL);
1110 extern BOOL _pcre_xclass(int, const uschar *);
1111
1112 #endif
1113
1114 /* End of pcre_internal.h */

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