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Revision 336 - (show annotations) (download)
Sat Apr 12 15:59:03 2008 UTC (6 years, 6 months ago) by ph10
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File size: 46458 byte(s)
Added PCRE_JAVASCRIPT_COMPAT option.

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) 1997-2008 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 NEXTCHAR(p) p++;
367 #define GETCHAR(c, eptr) c = *eptr;
368 #define GETCHARTEST(c, eptr) c = *eptr;
369 #define GETCHARINC(c, eptr) c = *eptr++;
370 #define GETCHARINCTEST(c, eptr) c = *eptr++;
371 #define GETCHARLEN(c, eptr, len) c = *eptr;
372 /* #define BACKCHAR(eptr) */
373
374 #else /* SUPPORT_UTF8 */
375
376 /* Advance a character pointer one byte in non-UTF-8 mode and by one character
377 in UTF-8 mode. */
378
379 #define NEXTCHAR(p) \
380 p++; \
381 if (utf8) { while((*p & 0xc0) == 0x80) p++; }
382
383 /* Get the next UTF-8 character, not advancing the pointer. This is called when
384 we know we are in UTF-8 mode. */
385
386 #define GETCHAR(c, eptr) \
387 c = *eptr; \
388 if (c >= 0xc0) \
389 { \
390 int gcii; \
391 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
392 int gcss = 6*gcaa; \
393 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
394 for (gcii = 1; gcii <= gcaa; gcii++) \
395 { \
396 gcss -= 6; \
397 c |= (eptr[gcii] & 0x3f) << gcss; \
398 } \
399 }
400
401 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
402 pointer. */
403
404 #define GETCHARTEST(c, eptr) \
405 c = *eptr; \
406 if (utf8 && c >= 0xc0) \
407 { \
408 int gcii; \
409 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
410 int gcss = 6*gcaa; \
411 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
412 for (gcii = 1; gcii <= gcaa; gcii++) \
413 { \
414 gcss -= 6; \
415 c |= (eptr[gcii] & 0x3f) << gcss; \
416 } \
417 }
418
419 /* Get the next UTF-8 character, advancing the pointer. This is called when we
420 know we are in UTF-8 mode. */
421
422 #define GETCHARINC(c, eptr) \
423 c = *eptr++; \
424 if (c >= 0xc0) \
425 { \
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 while (gcaa-- > 0) \
430 { \
431 gcss -= 6; \
432 c |= (*eptr++ & 0x3f) << gcss; \
433 } \
434 }
435
436 /* Get the next character, testing for UTF-8 mode, and advancing the pointer */
437
438 #define GETCHARINCTEST(c, eptr) \
439 c = *eptr++; \
440 if (utf8 && c >= 0xc0) \
441 { \
442 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
443 int gcss = 6*gcaa; \
444 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
445 while (gcaa-- > 0) \
446 { \
447 gcss -= 6; \
448 c |= (*eptr++ & 0x3f) << gcss; \
449 } \
450 }
451
452 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
453 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
454
455 #define GETCHARLEN(c, eptr, len) \
456 c = *eptr; \
457 if (c >= 0xc0) \
458 { \
459 int gcii; \
460 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
461 int gcss = 6*gcaa; \
462 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
463 for (gcii = 1; gcii <= gcaa; gcii++) \
464 { \
465 gcss -= 6; \
466 c |= (eptr[gcii] & 0x3f) << gcss; \
467 } \
468 len += gcaa; \
469 }
470
471 /* If the pointer is not at the start of a character, move it back until
472 it is. This is called only in UTF-8 mode - we don't put a test within the macro
473 because almost all calls are already within a block of UTF-8 only code. */
474
475 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
476
477 #endif
478
479
480 /* In case there is no definition of offsetof() provided - though any proper
481 Standard C system should have one. */
482
483 #ifndef offsetof
484 #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
485 #endif
486
487
488 /* These are the public options that can change during matching. */
489
490 #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
491
492 /* Private flags containing information about the compiled regex. They used to
493 live at the top end of the options word, but that got almost full, so now they
494 are in a 16-bit flags word. */
495
496 #define PCRE_NOPARTIAL 0x0001 /* can't use partial with this regex */
497 #define PCRE_FIRSTSET 0x0002 /* first_byte is set */
498 #define PCRE_REQCHSET 0x0004 /* req_byte is set */
499 #define PCRE_STARTLINE 0x0008 /* start after \n for multiline */
500 #define PCRE_JCHANGED 0x0010 /* j option used in regex */
501 #define PCRE_HASCRORLF 0x0020 /* explicit \r or \n in pattern */
502
503 /* Options for the "extra" block produced by pcre_study(). */
504
505 #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
506
507 /* Masks for identifying the public options that are permitted at compile
508 time, run time, or study time, respectively. */
509
510 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
511 PCRE_NEWLINE_ANYCRLF)
512
513 #define PUBLIC_OPTIONS \
514 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
515 PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
516 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
517 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
518 PCRE_JAVASCRIPT_COMPAT)
519
520 #define PUBLIC_EXEC_OPTIONS \
521 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
522 PCRE_PARTIAL|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)
523
524 #define PUBLIC_DFA_EXEC_OPTIONS \
525 (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
526 PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS| \
527 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)
528
529 #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
530
531 /* Magic number to provide a small check against being handed junk. Also used
532 to detect whether a pattern was compiled on a host of different endianness. */
533
534 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
535
536 /* Negative values for the firstchar and reqchar variables */
537
538 #define REQ_UNSET (-2)
539 #define REQ_NONE (-1)
540
541 /* The maximum remaining length of subject we are prepared to search for a
542 req_byte match. */
543
544 #define REQ_BYTE_MAX 1000
545
546 /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
547 variable-length repeat, or a anything other than literal characters. */
548
549 #define REQ_CASELESS 0x0100 /* indicates caselessness */
550 #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
551
552 /* Miscellaneous definitions */
553
554 typedef int BOOL;
555
556 #define FALSE 0
557 #define TRUE 1
558
559 /* Escape items that are just an encoding of a particular data value. */
560
561 #ifndef ESC_e
562 #define ESC_e 27
563 #endif
564
565 #ifndef ESC_f
566 #define ESC_f '\f'
567 #endif
568
569 #ifndef ESC_n
570 #define ESC_n '\n'
571 #endif
572
573 #ifndef ESC_r
574 #define ESC_r '\r'
575 #endif
576
577 /* We can't officially use ESC_t because it is a POSIX reserved identifier
578 (presumably because of all the others like size_t). */
579
580 #ifndef ESC_tee
581 #define ESC_tee '\t'
582 #endif
583
584 /* Codes for different types of Unicode property */
585
586 #define PT_ANY 0 /* Any property - matches all chars */
587 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
588 #define PT_GC 2 /* General characteristic (e.g. L) */
589 #define PT_PC 3 /* Particular characteristic (e.g. Lu) */
590 #define PT_SC 4 /* Script (e.g. Han) */
591
592 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
593 contain UTF-8 characters with values greater than 255. */
594
595 #define XCL_NOT 0x01 /* Flag: this is a negative class */
596 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
597
598 #define XCL_END 0 /* Marks end of individual items */
599 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
600 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
601 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
602 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
603
604 /* These are escaped items that aren't just an encoding of a particular data
605 value such as \n. They must have non-zero values, as check_escape() returns
606 their negation. Also, they must appear in the same order as in the opcode
607 definitions below, up to ESC_z. There's a dummy for OP_ANY because it
608 corresponds to "." rather than an escape sequence. The final one must be
609 ESC_REF as subsequent values are used for backreferences (\1, \2, \3, etc).
610 There are two tests in the code for an escape greater than ESC_b and less than
611 ESC_Z to detect the types that may be repeated. These are the types that
612 consume characters. If any new escapes are put in between that don't consume a
613 character, that code will have to change. */
614
615 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
616 ESC_W, ESC_w, ESC_dum1, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H, ESC_h,
617 ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_g, ESC_k, ESC_REF };
618
619
620 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
621 OP_EOD must correspond in order to the list of escapes immediately above.
622
623 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
624 that follow must also be updated to match. There is also a table called
625 "coptable" in pcre_dfa_exec.c that must be updated. */
626
627 enum {
628 OP_END, /* 0 End of pattern */
629
630 /* Values corresponding to backslashed metacharacters */
631
632 OP_SOD, /* 1 Start of data: \A */
633 OP_SOM, /* 2 Start of match (subject + offset): \G */
634 OP_SET_SOM, /* 3 Set start of match (\K) */
635 OP_NOT_WORD_BOUNDARY, /* 4 \B */
636 OP_WORD_BOUNDARY, /* 5 \b */
637 OP_NOT_DIGIT, /* 6 \D */
638 OP_DIGIT, /* 7 \d */
639 OP_NOT_WHITESPACE, /* 8 \S */
640 OP_WHITESPACE, /* 9 \s */
641 OP_NOT_WORDCHAR, /* 10 \W */
642 OP_WORDCHAR, /* 11 \w */
643 OP_ANY, /* 12 Match any character */
644 OP_ANYBYTE, /* 13 Match any byte (\C); different to OP_ANY for UTF-8 */
645 OP_NOTPROP, /* 14 \P (not Unicode property) */
646 OP_PROP, /* 15 \p (Unicode property) */
647 OP_ANYNL, /* 16 \R (any newline sequence) */
648 OP_NOT_HSPACE, /* 17 \H (not horizontal whitespace) */
649 OP_HSPACE, /* 18 \h (horizontal whitespace) */
650 OP_NOT_VSPACE, /* 19 \V (not vertical whitespace) */
651 OP_VSPACE, /* 20 \v (vertical whitespace) */
652 OP_EXTUNI, /* 21 \X (extended Unicode sequence */
653 OP_EODN, /* 22 End of data or \n at end of data: \Z. */
654 OP_EOD, /* 23 End of data: \z */
655
656 OP_OPT, /* 24 Set runtime options */
657 OP_CIRC, /* 25 Start of line - varies with multiline switch */
658 OP_DOLL, /* 26 End of line - varies with multiline switch */
659 OP_CHAR, /* 27 Match one character, casefully */
660 OP_CHARNC, /* 28 Match one character, caselessly */
661 OP_NOT, /* 29 Match one character, not the following one */
662
663 OP_STAR, /* 30 The maximizing and minimizing versions of */
664 OP_MINSTAR, /* 31 these six opcodes must come in pairs, with */
665 OP_PLUS, /* 32 the minimizing one second. */
666 OP_MINPLUS, /* 33 This first set applies to single characters.*/
667 OP_QUERY, /* 34 */
668 OP_MINQUERY, /* 35 */
669
670 OP_UPTO, /* 36 From 0 to n matches */
671 OP_MINUPTO, /* 37 */
672 OP_EXACT, /* 38 Exactly n matches */
673
674 OP_POSSTAR, /* 39 Possessified star */
675 OP_POSPLUS, /* 40 Possessified plus */
676 OP_POSQUERY, /* 41 Posesssified query */
677 OP_POSUPTO, /* 42 Possessified upto */
678
679 OP_NOTSTAR, /* 43 The maximizing and minimizing versions of */
680 OP_NOTMINSTAR, /* 44 these six opcodes must come in pairs, with */
681 OP_NOTPLUS, /* 45 the minimizing one second. They must be in */
682 OP_NOTMINPLUS, /* 46 exactly the same order as those above. */
683 OP_NOTQUERY, /* 47 This set applies to "not" single characters. */
684 OP_NOTMINQUERY, /* 48 */
685
686 OP_NOTUPTO, /* 49 From 0 to n matches */
687 OP_NOTMINUPTO, /* 50 */
688 OP_NOTEXACT, /* 51 Exactly n matches */
689
690 OP_NOTPOSSTAR, /* 52 Possessified versions */
691 OP_NOTPOSPLUS, /* 53 */
692 OP_NOTPOSQUERY, /* 54 */
693 OP_NOTPOSUPTO, /* 55 */
694
695 OP_TYPESTAR, /* 56 The maximizing and minimizing versions of */
696 OP_TYPEMINSTAR, /* 57 these six opcodes must come in pairs, with */
697 OP_TYPEPLUS, /* 58 the minimizing one second. These codes must */
698 OP_TYPEMINPLUS, /* 59 be in exactly the same order as those above. */
699 OP_TYPEQUERY, /* 60 This set applies to character types such as \d */
700 OP_TYPEMINQUERY, /* 61 */
701
702 OP_TYPEUPTO, /* 62 From 0 to n matches */
703 OP_TYPEMINUPTO, /* 63 */
704 OP_TYPEEXACT, /* 64 Exactly n matches */
705
706 OP_TYPEPOSSTAR, /* 65 Possessified versions */
707 OP_TYPEPOSPLUS, /* 66 */
708 OP_TYPEPOSQUERY, /* 67 */
709 OP_TYPEPOSUPTO, /* 68 */
710
711 OP_CRSTAR, /* 69 The maximizing and minimizing versions of */
712 OP_CRMINSTAR, /* 70 all these opcodes must come in pairs, with */
713 OP_CRPLUS, /* 71 the minimizing one second. These codes must */
714 OP_CRMINPLUS, /* 72 be in exactly the same order as those above. */
715 OP_CRQUERY, /* 73 These are for character classes and back refs */
716 OP_CRMINQUERY, /* 74 */
717 OP_CRRANGE, /* 75 These are different to the three sets above. */
718 OP_CRMINRANGE, /* 76 */
719
720 OP_CLASS, /* 77 Match a character class, chars < 256 only */
721 OP_NCLASS, /* 78 Same, but the bitmap was created from a negative
722 class - the difference is relevant only when a UTF-8
723 character > 255 is encountered. */
724
725 OP_XCLASS, /* 79 Extended class for handling UTF-8 chars within the
726 class. This does both positive and negative. */
727
728 OP_REF, /* 80 Match a back reference */
729 OP_RECURSE, /* 81 Match a numbered subpattern (possibly recursive) */
730 OP_CALLOUT, /* 82 Call out to external function if provided */
731
732 OP_ALT, /* 83 Start of alternation */
733 OP_KET, /* 84 End of group that doesn't have an unbounded repeat */
734 OP_KETRMAX, /* 85 These two must remain together and in this */
735 OP_KETRMIN, /* 86 order. They are for groups the repeat for ever. */
736
737 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
738
739 OP_ASSERT, /* 87 Positive lookahead */
740 OP_ASSERT_NOT, /* 88 Negative lookahead */
741 OP_ASSERTBACK, /* 89 Positive lookbehind */
742 OP_ASSERTBACK_NOT, /* 90 Negative lookbehind */
743 OP_REVERSE, /* 91 Move pointer back - used in lookbehind assertions */
744
745 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
746 as there's a test for >= ONCE for a subpattern that isn't an assertion. */
747
748 OP_ONCE, /* 92 Atomic group */
749 OP_BRA, /* 93 Start of non-capturing bracket */
750 OP_CBRA, /* 94 Start of capturing bracket */
751 OP_COND, /* 95 Conditional group */
752
753 /* These three must follow the previous three, in the same order. There's a
754 check for >= SBRA to distinguish the two sets. */
755
756 OP_SBRA, /* 96 Start of non-capturing bracket, check empty */
757 OP_SCBRA, /* 97 Start of capturing bracket, check empty */
758 OP_SCOND, /* 98 Conditional group, check empty */
759
760 OP_CREF, /* 99 Used to hold a capture number as condition */
761 OP_RREF, /* 100 Used to hold a recursion number as condition */
762 OP_DEF, /* 101 The DEFINE condition */
763
764 OP_BRAZERO, /* 102 These two must remain together and in this */
765 OP_BRAMINZERO, /* 103 order. */
766
767 /* These are backtracking control verbs */
768
769 OP_PRUNE, /* 104 */
770 OP_SKIP, /* 105 */
771 OP_THEN, /* 106 */
772 OP_COMMIT, /* 107 */
773
774 /* These are forced failure and success verbs */
775
776 OP_FAIL, /* 108 */
777 OP_ACCEPT, /* 109 */
778
779 /* This is used to skip a subpattern with a {0} quantifier */
780
781 OP_SKIPZERO /* 110 */
782 };
783
784
785 /* This macro defines textual names for all the opcodes. These are used only
786 for debugging. The macro is referenced only in pcre_printint.c. */
787
788 #define OP_NAME_LIST \
789 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
790 "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte", \
791 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
792 "extuni", "\\Z", "\\z", \
793 "Opt", "^", "$", "char", "charnc", "not", \
794 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
795 "*+","++", "?+", "{", \
796 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
797 "*+","++", "?+", "{", \
798 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
799 "*+","++", "?+", "{", \
800 "*", "*?", "+", "+?", "?", "??", "{", "{", \
801 "class", "nclass", "xclass", "Ref", "Recurse", "Callout", \
802 "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
803 "AssertB", "AssertB not", "Reverse", \
804 "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond", \
805 "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero", \
806 "*PRUNE", "*SKIP", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT", \
807 "Skip zero"
808
809
810 /* This macro defines the length of fixed length operations in the compiled
811 regex. The lengths are used when searching for specific things, and also in the
812 debugging printing of a compiled regex. We use a macro so that it can be
813 defined close to the definitions of the opcodes themselves.
814
815 As things have been extended, some of these are no longer fixed lenths, but are
816 minima instead. For example, the length of a single-character repeat may vary
817 in UTF-8 mode. The code that uses this table must know about such things. */
818
819 #define OP_LENGTHS \
820 1, /* End */ \
821 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
822 1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
823 1, 1, /* Any, Anybyte */ \
824 3, 3, 1, /* NOTPROP, PROP, EXTUNI */ \
825 1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
826 1, 1, 2, 1, 1, /* \Z, \z, Opt, ^, $ */ \
827 2, /* Char - the minimum length */ \
828 2, /* Charnc - the minimum length */ \
829 2, /* not */ \
830 /* Positive single-char repeats ** These are */ \
831 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
832 4, 4, 4, /* upto, minupto, exact ** UTF-8 mode */ \
833 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
834 /* Negative single-char repeats - only for chars < 256 */ \
835 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
836 4, 4, 4, /* NOT upto, minupto, exact */ \
837 2, 2, 2, 4, /* Possessive *, +, ?, upto */ \
838 /* Positive type repeats */ \
839 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
840 4, 4, 4, /* Type upto, minupto, exact */ \
841 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
842 /* Character class & ref repeats */ \
843 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
844 5, 5, /* CRRANGE, CRMINRANGE */ \
845 33, /* CLASS */ \
846 33, /* NCLASS */ \
847 0, /* XCLASS - variable length */ \
848 3, /* REF */ \
849 1+LINK_SIZE, /* RECURSE */ \
850 2+2*LINK_SIZE, /* CALLOUT */ \
851 1+LINK_SIZE, /* Alt */ \
852 1+LINK_SIZE, /* Ket */ \
853 1+LINK_SIZE, /* KetRmax */ \
854 1+LINK_SIZE, /* KetRmin */ \
855 1+LINK_SIZE, /* Assert */ \
856 1+LINK_SIZE, /* Assert not */ \
857 1+LINK_SIZE, /* Assert behind */ \
858 1+LINK_SIZE, /* Assert behind not */ \
859 1+LINK_SIZE, /* Reverse */ \
860 1+LINK_SIZE, /* ONCE */ \
861 1+LINK_SIZE, /* BRA */ \
862 3+LINK_SIZE, /* CBRA */ \
863 1+LINK_SIZE, /* COND */ \
864 1+LINK_SIZE, /* SBRA */ \
865 3+LINK_SIZE, /* SCBRA */ \
866 1+LINK_SIZE, /* SCOND */ \
867 3, /* CREF */ \
868 3, /* RREF */ \
869 1, /* DEF */ \
870 1, 1, /* BRAZERO, BRAMINZERO */ \
871 1, 1, 1, 1, /* PRUNE, SKIP, THEN, COMMIT, */ \
872 1, 1, 1 /* FAIL, ACCEPT, SKIPZERO */
873
874
875 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
876
877 #define RREF_ANY 0xffff
878
879 /* Error code numbers. They are given names so that they can more easily be
880 tracked. */
881
882 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
883 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
884 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
885 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
886 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
887 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
888 ERR60, ERR61, ERR62, ERR63, ERR64 };
889
890 /* The real format of the start of the pcre block; the index of names and the
891 code vector run on as long as necessary after the end. We store an explicit
892 offset to the name table so that if a regex is compiled on one host, saved, and
893 then run on another where the size of pointers is different, all might still
894 be well. For the case of compiled-on-4 and run-on-8, we include an extra
895 pointer that is always NULL. For future-proofing, a few dummy fields were
896 originally included - even though you can never get this planning right - but
897 there is only one left now.
898
899 NOTE NOTE NOTE:
900 Because people can now save and re-use compiled patterns, any additions to this
901 structure should be made at the end, and something earlier (e.g. a new
902 flag in the options or one of the dummy fields) should indicate that the new
903 fields are present. Currently PCRE always sets the dummy fields to zero.
904 NOTE NOTE NOTE:
905 */
906
907 typedef struct real_pcre {
908 pcre_uint32 magic_number;
909 pcre_uint32 size; /* Total that was malloced */
910 pcre_uint32 options; /* Public options */
911 pcre_uint16 flags; /* Private flags */
912 pcre_uint16 dummy1; /* For future use */
913 pcre_uint16 top_bracket;
914 pcre_uint16 top_backref;
915 pcre_uint16 first_byte;
916 pcre_uint16 req_byte;
917 pcre_uint16 name_table_offset; /* Offset to name table that follows */
918 pcre_uint16 name_entry_size; /* Size of any name items */
919 pcre_uint16 name_count; /* Number of name items */
920 pcre_uint16 ref_count; /* Reference count */
921
922 const unsigned char *tables; /* Pointer to tables or NULL for std */
923 const unsigned char *nullpad; /* NULL padding */
924 } real_pcre;
925
926 /* The format of the block used to store data from pcre_study(). The same
927 remark (see NOTE above) about extending this structure applies. */
928
929 typedef struct pcre_study_data {
930 pcre_uint32 size; /* Total that was malloced */
931 pcre_uint32 options;
932 uschar start_bits[32];
933 } pcre_study_data;
934
935 /* Structure for passing "static" information around between the functions
936 doing the compiling, so that they are thread-safe. */
937
938 typedef struct compile_data {
939 const uschar *lcc; /* Points to lower casing table */
940 const uschar *fcc; /* Points to case-flipping table */
941 const uschar *cbits; /* Points to character type table */
942 const uschar *ctypes; /* Points to table of type maps */
943 const uschar *start_workspace;/* The start of working space */
944 const uschar *start_code; /* The start of the compiled code */
945 const uschar *start_pattern; /* The start of the pattern */
946 const uschar *end_pattern; /* The end of the pattern */
947 uschar *hwm; /* High watermark of workspace */
948 uschar *name_table; /* The name/number table */
949 int names_found; /* Number of entries so far */
950 int name_entry_size; /* Size of each entry */
951 int bracount; /* Count of capturing parens as we compile */
952 int final_bracount; /* Saved value after first pass */
953 int top_backref; /* Maximum back reference */
954 unsigned int backref_map; /* Bitmap of low back refs */
955 int external_options; /* External (initial) options */
956 int external_flags; /* External flag bits to be set */
957 int req_varyopt; /* "After variable item" flag for reqbyte */
958 BOOL had_accept; /* (*ACCEPT) encountered */
959 int nltype; /* Newline type */
960 int nllen; /* Newline string length */
961 uschar nl[4]; /* Newline string when fixed length */
962 } compile_data;
963
964 /* Structure for maintaining a chain of pointers to the currently incomplete
965 branches, for testing for left recursion. */
966
967 typedef struct branch_chain {
968 struct branch_chain *outer;
969 uschar *current;
970 } branch_chain;
971
972 /* Structure for items in a linked list that represents an explicit recursive
973 call within the pattern. */
974
975 typedef struct recursion_info {
976 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
977 int group_num; /* Number of group that was called */
978 const uschar *after_call; /* "Return value": points after the call in the expr */
979 USPTR save_start; /* Old value of mstart */
980 int *offset_save; /* Pointer to start of saved offsets */
981 int saved_max; /* Number of saved offsets */
982 } recursion_info;
983
984 /* Structure for building a chain of data for holding the values of the subject
985 pointer at the start of each subpattern, so as to detect when an empty string
986 has been matched by a subpattern - to break infinite loops. */
987
988 typedef struct eptrblock {
989 struct eptrblock *epb_prev;
990 USPTR epb_saved_eptr;
991 } eptrblock;
992
993
994 /* Structure for passing "static" information around between the functions
995 doing traditional NFA matching, so that they are thread-safe. */
996
997 typedef struct match_data {
998 unsigned long int match_call_count; /* As it says */
999 unsigned long int match_limit; /* As it says */
1000 unsigned long int match_limit_recursion; /* As it says */
1001 int *offset_vector; /* Offset vector */
1002 int offset_end; /* One past the end */
1003 int offset_max; /* The maximum usable for return data */
1004 int nltype; /* Newline type */
1005 int nllen; /* Newline string length */
1006 uschar nl[4]; /* Newline string when fixed */
1007 const uschar *lcc; /* Points to lower casing table */
1008 const uschar *ctypes; /* Points to table of type maps */
1009 BOOL offset_overflow; /* Set if too many extractions */
1010 BOOL notbol; /* NOTBOL flag */
1011 BOOL noteol; /* NOTEOL flag */
1012 BOOL utf8; /* UTF8 flag */
1013 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
1014 BOOL endonly; /* Dollar not before final \n */
1015 BOOL notempty; /* Empty string match not wanted */
1016 BOOL partial; /* PARTIAL flag */
1017 BOOL hitend; /* Hit the end of the subject at some point */
1018 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
1019 const uschar *start_code; /* For use when recursing */
1020 USPTR start_subject; /* Start of the subject string */
1021 USPTR end_subject; /* End of the subject string */
1022 USPTR start_match_ptr; /* Start of matched string */
1023 USPTR end_match_ptr; /* Subject position at end match */
1024 int end_offset_top; /* Highwater mark at end of match */
1025 int capture_last; /* Most recent capture number */
1026 int start_offset; /* The start offset value */
1027 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1028 int eptrn; /* Next free eptrblock */
1029 recursion_info *recursive; /* Linked list of recursion data */
1030 void *callout_data; /* To pass back to callouts */
1031 } match_data;
1032
1033 /* A similar structure is used for the same purpose by the DFA matching
1034 functions. */
1035
1036 typedef struct dfa_match_data {
1037 const uschar *start_code; /* Start of the compiled pattern */
1038 const uschar *start_subject; /* Start of the subject string */
1039 const uschar *end_subject; /* End of subject string */
1040 const uschar *tables; /* Character tables */
1041 int moptions; /* Match options */
1042 int poptions; /* Pattern options */
1043 int nltype; /* Newline type */
1044 int nllen; /* Newline string length */
1045 uschar nl[4]; /* Newline string when fixed */
1046 void *callout_data; /* To pass back to callouts */
1047 } dfa_match_data;
1048
1049 /* Bit definitions for entries in the pcre_ctypes table. */
1050
1051 #define ctype_space 0x01
1052 #define ctype_letter 0x02
1053 #define ctype_digit 0x04
1054 #define ctype_xdigit 0x08
1055 #define ctype_word 0x10 /* alphanumeric or '_' */
1056 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1057
1058 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1059 of bits for a class map. Some classes are built by combining these tables. */
1060
1061 #define cbit_space 0 /* [:space:] or \s */
1062 #define cbit_xdigit 32 /* [:xdigit:] */
1063 #define cbit_digit 64 /* [:digit:] or \d */
1064 #define cbit_upper 96 /* [:upper:] */
1065 #define cbit_lower 128 /* [:lower:] */
1066 #define cbit_word 160 /* [:word:] or \w */
1067 #define cbit_graph 192 /* [:graph:] */
1068 #define cbit_print 224 /* [:print:] */
1069 #define cbit_punct 256 /* [:punct:] */
1070 #define cbit_cntrl 288 /* [:cntrl:] */
1071 #define cbit_length 320 /* Length of the cbits table */
1072
1073 /* Offsets of the various tables from the base tables pointer, and
1074 total length. */
1075
1076 #define lcc_offset 0
1077 #define fcc_offset 256
1078 #define cbits_offset 512
1079 #define ctypes_offset (cbits_offset + cbit_length)
1080 #define tables_length (ctypes_offset + 256)
1081
1082 /* Layout of the UCP type table that translates property names into types and
1083 codes. Each entry used to point directly to a name, but to reduce the number of
1084 relocations in shared libraries, it now has an offset into a single string
1085 instead. */
1086
1087 typedef struct {
1088 pcre_uint16 name_offset;
1089 pcre_uint16 type;
1090 pcre_uint16 value;
1091 } ucp_type_table;
1092
1093
1094 /* Internal shared data tables. These are tables that are used by more than one
1095 of the exported public functions. They have to be "external" in the C sense,
1096 but are not part of the PCRE public API. The data for these tables is in the
1097 pcre_tables.c module. */
1098
1099 extern const int _pcre_utf8_table1[];
1100 extern const int _pcre_utf8_table2[];
1101 extern const int _pcre_utf8_table3[];
1102 extern const uschar _pcre_utf8_table4[];
1103
1104 extern const int _pcre_utf8_table1_size;
1105
1106 extern const char _pcre_utt_names[];
1107 extern const ucp_type_table _pcre_utt[];
1108 extern const int _pcre_utt_size;
1109
1110 extern const uschar _pcre_default_tables[];
1111
1112 extern const uschar _pcre_OP_lengths[];
1113
1114
1115 /* Internal shared functions. These are functions that are used by more than
1116 one of the exported public functions. They have to be "external" in the C
1117 sense, but are not part of the PCRE public API. */
1118
1119 extern BOOL _pcre_is_newline(const uschar *, int, const uschar *,
1120 int *, BOOL);
1121 extern int _pcre_ord2utf8(int, uschar *);
1122 extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1123 const pcre_study_data *, pcre_study_data *);
1124 extern int _pcre_ucp_findprop(const unsigned int, int *, int *);
1125 extern unsigned int _pcre_ucp_othercase(const unsigned int);
1126 extern int _pcre_valid_utf8(const uschar *, int);
1127 extern BOOL _pcre_was_newline(const uschar *, int, const uschar *,
1128 int *, BOOL);
1129 extern BOOL _pcre_xclass(int, const uschar *);
1130
1131 #endif
1132
1133 /* End of pcre_internal.h */

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