/[pcre]/code/trunk/pcre_internal.h
ViewVC logotype

Contents of /code/trunk/pcre_internal.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 269 - (show annotations) (download)
Fri Nov 16 16:22:24 2007 UTC (6 years, 8 months ago) by ph10
File MIME type: text/plain
File size: 45944 byte(s)
Improve error messages for (?+-a) and (?-+a).

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

Properties

Name Value
svn:eol-style native
svn:keywords "Author Date Id Revision Url"

webmaster@exim.org
ViewVC Help
Powered by ViewVC 1.1.12