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Revision 145 - (show annotations) (download)
Wed Apr 4 14:06:52 2007 UTC (7 years ago) by ph10
File MIME type: text/plain
File size: 44985 byte(s)
Reworked all the WIN32 __declspec stuff in the hope of getting it right.

1 /*************************************************
2 * Perl-Compatible Regular Expressions *
3 *************************************************/
4
5
6 /* PCRE is a library of functions to support regular expressions whose syntax
7 and semantics are as close as possible to those of the Perl 5 language.
8
9 Written by Philip Hazel
10 Copyright (c) 1997-2007 University of Cambridge
11
12 -----------------------------------------------------------------------------
13 Redistribution and use in source and binary forms, with or without
14 modification, are permitted provided that the following conditions are met:
15
16 * Redistributions of source code must retain the above copyright notice,
17 this list of conditions and the following disclaimer.
18
19 * Redistributions in binary form must reproduce the above copyright
20 notice, this list of conditions and the following disclaimer in the
21 documentation and/or other materials provided with the distribution.
22
23 * Neither the name of the University of Cambridge nor the names of its
24 contributors may be used to endorse or promote products derived from
25 this software without specific prior written permission.
26
27 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
28 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
31 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 POSSIBILITY OF SUCH DAMAGE.
38 -----------------------------------------------------------------------------
39 */
40
41 /* This header contains definitions that are shared between the different
42 modules, but which are not relevant to the exported API. This includes some
43 functions whose names all begin with "_pcre_". */
44
45 #ifndef PCRE_INTERNAL_H
46 #define PCRE_INTERNAL_H
47
48 /* Define DEBUG to get debugging output on stdout. */
49
50 #if 0
51 #define DEBUG
52 #endif
53
54 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
55 inline, and there are *still* stupid compilers about that don't like indented
56 pre-processor statements, or at least there were when I first wrote this. After
57 all, it had only been about 10 years then...
58
59 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
60 be absolutely sure we get our version. */
61
62 #undef DPRINTF
63 #ifdef DEBUG
64 #define DPRINTF(p) printf p
65 #else
66 #define DPRINTF(p) /* Nothing */
67 #endif
68
69
70 /* Get the definitions provided by running "configure" */
71
72 #include "config.h"
73
74 /* Standard C headers plus the external interface definition. The only time
75 setjmp and stdarg are used is when NO_RECURSE is set. */
76
77 #include <ctype.h>
78 #include <limits.h>
79 #include <setjmp.h>
80 #include <stdarg.h>
81 #include <stddef.h>
82 #include <stdio.h>
83 #include <stdlib.h>
84 #include <string.h>
85
86 /* When compiling a DLL for Windows, the exported symbols have to be declared
87 using some MS magic. I found some useful information on this web page:
88 http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
89 information there, using __declspec(dllesport) without "extern" we have a
90 definition; with "extern" we have a declaration. The settings here override the
91 setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
92 which is all that is needed for applications, which import the symbols. We use:
93
94 PCRE_EXP_DECL for declarations
95 PCRE_EXP_DEFN for definitions of exported functions
96 PCRE_EXP_DATA_DEFN for definitions of exported variables
97
98 The reason for the two DEFN macros is that in non-Windows environments, one
99 does not want to have "extern" before variable definitions because it leads to
100 compiler warnings. So we distinguish between functions and variables. In
101 Windows, the two should always be the same.
102
103 The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
104 which is an application, but needs to import this file in order to "peek" at
105 internals, can #include pcre.h first, can get an application's-eye view.
106
107 In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
108 special-purpose environments) might want to stick other stuff in front of
109 exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
110 PCRE_EXP_DATA_DEFN only if they are not already set. */
111
112 #ifndef PCRE_EXP_DECL
113 # ifdef _WIN32
114 # ifdef DLL_EXPORT
115 # define PCRE_EXP_DECL extern __declspec(dllexport)
116 # define PCRE_EXP_DEFN __declspec(dllexport)
117 # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
118 # else
119 # define PCRE_EXP_DECL extern
120 # define PCRE_EXP_DEFN
121 # define PCRE_EXP_DATA_DEFN
122 # endif
123 #
124 # else
125 # ifdef __cplusplus
126 # define PCRE_EXP_DECL extern "C"
127 # else
128 # define PCRE_EXP_DECL extern
129 # endif
130 # ifndef PCRE_EXP_DEFN
131 # define PCRE_EXP_DEFN PCRE_EXP_DECL
132 # endif
133 # ifndef PCRE_EXP_DATA_DEFN
134 # define PCRE_EXP_DATA_DEFN
135 # endif
136 # endif
137 #endif
138
139 /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
140 cannot determine these outside the compilation (e.g. by running a program as
141 part of "configure") because PCRE is often cross-compiled for use on other
142 systems. Instead we make use of the maximum sizes that are available at
143 preprocessor time in standard C environments. */
144
145 #if USHRT_MAX == 65535
146 typedef unsigned short pcre_uint16;
147 #elif UINT_MAX == 65535
148 typedef unsigned int pcre_uint16;
149 #else
150 #error Cannot determine a type for 16-bit unsigned integers
151 #endif
152
153 #if UINT_MAX == 4294967295
154 typedef unsigned int pcre_uint32;
155 #elif ULONG_MAX == 4294967295
156 typedef unsigned long int pcre_uint32;
157 #else
158 #error Cannot determine a type for 32-bit unsigned integers
159 #endif
160
161 /* All character handling must be done as unsigned characters. Otherwise there
162 are problems with top-bit-set characters and functions such as isspace().
163 However, we leave the interface to the outside world as char *, because that
164 should make things easier for callers. We define a short type for unsigned char
165 to save lots of typing. I tried "uchar", but it causes problems on Digital
166 Unix, where it is defined in sys/types, so use "uschar" instead. */
167
168 typedef unsigned char uschar;
169
170 /* This is an unsigned int value that no character can ever have. UTF-8
171 characters only go up to 0x7fffffff (though Unicode doesn't go beyond
172 0x0010ffff). */
173
174 #define NOTACHAR 0xffffffff
175
176 /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
177 and "all" at present). The following macros are used to package up testing for
178 newlines. NLBLOCK, PSSTART, and PSEND are defined in the various modules to
179 indicate in which datablock the parameters exist, and what the start/end of
180 string field names are. */
181
182 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
183 #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
184
185 /* This macro checks for a newline at the given position */
186
187 #define IS_NEWLINE(p) \
188 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
189 ((p) < NLBLOCK->PSEND && \
190 _pcre_is_newline((p), NLBLOCK->PSEND, &(NLBLOCK->nllen), utf8) \
191 ) \
192 : \
193 ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
194 (p)[0] == NLBLOCK->nl[0] && \
195 (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
196 ) \
197 )
198
199 /* This macro checks for a newline immediately preceding the given position */
200
201 #define WAS_NEWLINE(p) \
202 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
203 ((p) > NLBLOCK->PSSTART && \
204 _pcre_was_newline((p), NLBLOCK->PSSTART, &(NLBLOCK->nllen), utf8) \
205 ) \
206 : \
207 ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
208 (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
209 (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
210 ) \
211 )
212
213 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
214 with a custom type. This makes it possible, for example, to allow pcre_exec()
215 to process subject strings that are discontinuous by using a smart pointer
216 class. It must always be possible to inspect all of the subject string in
217 pcre_exec() because of the way it backtracks. Two macros are required in the
218 normal case, for sign-unspecified and unsigned char pointers. The former is
219 used for the external interface and appears in pcre.h, which is why its name
220 must begin with PCRE_. */
221
222 #ifdef CUSTOM_SUBJECT_PTR
223 #define PCRE_SPTR CUSTOM_SUBJECT_PTR
224 #define USPTR CUSTOM_SUBJECT_PTR
225 #else
226 #define PCRE_SPTR const char *
227 #define USPTR const unsigned char *
228 #endif
229
230
231
232 /* Include the public PCRE header and the definitions of UCP character property
233 values. */
234
235 #include <pcre.h>
236 #include "ucp.h"
237
238 /* When compiling for use with the Virtual Pascal compiler, these functions
239 need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
240 option on the command line. */
241
242 #ifdef VPCOMPAT
243 #define strlen(s) _strlen(s)
244 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
245 #define memcmp(s,c,n) _memcmp(s,c,n)
246 #define memcpy(d,s,n) _memcpy(d,s,n)
247 #define memmove(d,s,n) _memmove(d,s,n)
248 #define memset(s,c,n) _memset(s,c,n)
249 #else /* VPCOMPAT */
250
251 /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
252 define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
253 is set. Otherwise, include an emulating function for those systems that have
254 neither (there some non-Unix environments where this is the case). */
255
256 #ifndef HAVE_MEMMOVE
257 #undef memmove /* some systems may have a macro */
258 #ifdef HAVE_BCOPY
259 #define memmove(a, b, c) bcopy(b, a, c)
260 #else /* HAVE_BCOPY */
261 static void *
262 pcre_memmove(void *d, const void *s, size_t n)
263 {
264 size_t i;
265 unsigned char *dest = (unsigned char *)d;
266 const unsigned char *src = (const unsigned char *)s;
267 if (dest > src)
268 {
269 dest += n;
270 src += n;
271 for (i = 0; i < n; ++i) *(--dest) = *(--src);
272 return (void *)dest;
273 }
274 else
275 {
276 for (i = 0; i < n; ++i) *dest++ = *src++;
277 return (void *)(dest - n);
278 }
279 }
280 #define memmove(a, b, c) pcre_memmove(a, b, c)
281 #endif /* not HAVE_BCOPY */
282 #endif /* not HAVE_MEMMOVE */
283 #endif /* not VPCOMPAT */
284
285
286 /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
287 in big-endian order) by default. These are used, for example, to link from the
288 start of a subpattern to its alternatives and its end. The use of 2 bytes per
289 offset limits the size of the compiled regex to around 64K, which is big enough
290 for almost everybody. However, I received a request for an even bigger limit.
291 For this reason, and also to make the code easier to maintain, the storing and
292 loading of offsets from the byte string is now handled by the macros that are
293 defined here.
294
295 The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
296 the config.h file, but can be overridden by using -D on the command line. This
297 is automated on Unix systems via the "configure" command. */
298
299 #if LINK_SIZE == 2
300
301 #define PUT(a,n,d) \
302 (a[n] = (d) >> 8), \
303 (a[(n)+1] = (d) & 255)
304
305 #define GET(a,n) \
306 (((a)[n] << 8) | (a)[(n)+1])
307
308 #define MAX_PATTERN_SIZE (1 << 16)
309
310
311 #elif LINK_SIZE == 3
312
313 #define PUT(a,n,d) \
314 (a[n] = (d) >> 16), \
315 (a[(n)+1] = (d) >> 8), \
316 (a[(n)+2] = (d) & 255)
317
318 #define GET(a,n) \
319 (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
320
321 #define MAX_PATTERN_SIZE (1 << 24)
322
323
324 #elif LINK_SIZE == 4
325
326 #define PUT(a,n,d) \
327 (a[n] = (d) >> 24), \
328 (a[(n)+1] = (d) >> 16), \
329 (a[(n)+2] = (d) >> 8), \
330 (a[(n)+3] = (d) & 255)
331
332 #define GET(a,n) \
333 (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
334
335 #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */
336
337
338 #else
339 #error LINK_SIZE must be either 2, 3, or 4
340 #endif
341
342
343 /* Convenience macro defined in terms of the others */
344
345 #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
346
347
348 /* PCRE uses some other 2-byte quantities that do not change when the size of
349 offsets changes. There are used for repeat counts and for other things such as
350 capturing parenthesis numbers in back references. */
351
352 #define PUT2(a,n,d) \
353 a[n] = (d) >> 8; \
354 a[(n)+1] = (d) & 255
355
356 #define GET2(a,n) \
357 (((a)[n] << 8) | (a)[(n)+1])
358
359 #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2
360
361
362 /* When UTF-8 encoding is being used, a character is no longer just a single
363 byte. The macros for character handling generate simple sequences when used in
364 byte-mode, and more complicated ones for UTF-8 characters. */
365
366 #ifndef SUPPORT_UTF8
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 /* Get the next UTF-8 character, not advancing the pointer. This is called when
377 we know we are in UTF-8 mode. */
378
379 #define GETCHAR(c, eptr) \
380 c = *eptr; \
381 if (c >= 0xc0) \
382 { \
383 int gcii; \
384 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
385 int gcss = 6*gcaa; \
386 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
387 for (gcii = 1; gcii <= gcaa; gcii++) \
388 { \
389 gcss -= 6; \
390 c |= (eptr[gcii] & 0x3f) << gcss; \
391 } \
392 }
393
394 /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
395 pointer. */
396
397 #define GETCHARTEST(c, eptr) \
398 c = *eptr; \
399 if (utf8 && c >= 0xc0) \
400 { \
401 int gcii; \
402 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
403 int gcss = 6*gcaa; \
404 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
405 for (gcii = 1; gcii <= gcaa; gcii++) \
406 { \
407 gcss -= 6; \
408 c |= (eptr[gcii] & 0x3f) << gcss; \
409 } \
410 }
411
412 /* Get the next UTF-8 character, advancing the pointer. This is called when we
413 know we are in UTF-8 mode. */
414
415 #define GETCHARINC(c, eptr) \
416 c = *eptr++; \
417 if (c >= 0xc0) \
418 { \
419 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
420 int gcss = 6*gcaa; \
421 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
422 while (gcaa-- > 0) \
423 { \
424 gcss -= 6; \
425 c |= (*eptr++ & 0x3f) << gcss; \
426 } \
427 }
428
429 /* Get the next character, testing for UTF-8 mode, and advancing the pointer */
430
431 #define GETCHARINCTEST(c, eptr) \
432 c = *eptr++; \
433 if (utf8 && c >= 0xc0) \
434 { \
435 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
436 int gcss = 6*gcaa; \
437 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
438 while (gcaa-- > 0) \
439 { \
440 gcss -= 6; \
441 c |= (*eptr++ & 0x3f) << gcss; \
442 } \
443 }
444
445 /* Get the next UTF-8 character, not advancing the pointer, incrementing length
446 if there are extra bytes. This is called when we know we are in UTF-8 mode. */
447
448 #define GETCHARLEN(c, eptr, len) \
449 c = *eptr; \
450 if (c >= 0xc0) \
451 { \
452 int gcii; \
453 int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
454 int gcss = 6*gcaa; \
455 c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
456 for (gcii = 1; gcii <= gcaa; gcii++) \
457 { \
458 gcss -= 6; \
459 c |= (eptr[gcii] & 0x3f) << gcss; \
460 } \
461 len += gcaa; \
462 }
463
464 /* If the pointer is not at the start of a character, move it back until
465 it is. Called only in UTF-8 mode. */
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
496 /* Options for the "extra" block produced by pcre_study(). */
497
498 #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
499
500 /* Masks for identifying the public options that are permitted at compile
501 time, run time, or study time, respectively. */
502
503 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY)
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)
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)
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
519 #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
520
521 /* Magic number to provide a small check against being handed junk. Also used
522 to detect whether a pattern was compiled on a host of different endianness. */
523
524 #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
525
526 /* Negative values for the firstchar and reqchar variables */
527
528 #define REQ_UNSET (-2)
529 #define REQ_NONE (-1)
530
531 /* The maximum remaining length of subject we are prepared to search for a
532 req_byte match. */
533
534 #define REQ_BYTE_MAX 1000
535
536 /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
537 variable-length repeat, or a anything other than literal characters. */
538
539 #define REQ_CASELESS 0x0100 /* indicates caselessness */
540 #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
541
542 /* Miscellaneous definitions */
543
544 typedef int BOOL;
545
546 #define FALSE 0
547 #define TRUE 1
548
549 /* Escape items that are just an encoding of a particular data value. */
550
551 #ifndef ESC_e
552 #define ESC_e 27
553 #endif
554
555 #ifndef ESC_f
556 #define ESC_f '\f'
557 #endif
558
559 #ifndef ESC_n
560 #define ESC_n '\n'
561 #endif
562
563 #ifndef ESC_r
564 #define ESC_r '\r'
565 #endif
566
567 /* We can't officially use ESC_t because it is a POSIX reserved identifier
568 (presumably because of all the others like size_t). */
569
570 #ifndef ESC_tee
571 #define ESC_tee '\t'
572 #endif
573
574 /* Codes for different types of Unicode property */
575
576 #define PT_ANY 0 /* Any property - matches all chars */
577 #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
578 #define PT_GC 2 /* General characteristic (e.g. L) */
579 #define PT_PC 3 /* Particular characteristic (e.g. Lu) */
580 #define PT_SC 4 /* Script (e.g. Han) */
581
582 /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
583 contain UTF-8 characters with values greater than 255. */
584
585 #define XCL_NOT 0x01 /* Flag: this is a negative class */
586 #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
587
588 #define XCL_END 0 /* Marks end of individual items */
589 #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
590 #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
591 #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
592 #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
593
594 /* These are escaped items that aren't just an encoding of a particular data
595 value such as \n. They must have non-zero values, as check_escape() returns
596 their negation. Also, they must appear in the same order as in the opcode
597 definitions below, up to ESC_z. There's a dummy for OP_ANY because it
598 corresponds to "." rather than an escape sequence. The final one must be
599 ESC_REF as subsequent values are used for backreferences (\1, \2, \3, etc).
600 There are two tests in the code for an escape greater than ESC_b and less than
601 ESC_Z to detect the types that may be repeated. These are the types that
602 consume characters. If any new escapes are put in between that don't consume a
603 character, that code will have to change. */
604
605 enum { ESC_A = 1, ESC_G, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s, ESC_W,
606 ESC_w, ESC_dum1, ESC_C, ESC_P, ESC_p, ESC_R, ESC_X, ESC_Z, ESC_z,
607 ESC_E, ESC_Q, ESC_k, ESC_REF };
608
609
610 /* Opcode table: OP_BRA must be last, as all values >= it are used for brackets
611 that extract substrings. 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 To keep stored, compiled patterns compatible, new opcodes should be added
615 immediately before OP_BRA, where (since release 7.0) a gap is left for this
616 purpose.
617
618 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
619 that follow must also be updated to match. There is also a table called
620 "coptable" in pcre_dfa_exec.c that must be updated. */
621
622 enum {
623 OP_END, /* 0 End of pattern */
624
625 /* Values corresponding to backslashed metacharacters */
626
627 OP_SOD, /* 1 Start of data: \A */
628 OP_SOM, /* 2 Start of match (subject + offset): \G */
629 OP_NOT_WORD_BOUNDARY, /* 3 \B */
630 OP_WORD_BOUNDARY, /* 4 \b */
631 OP_NOT_DIGIT, /* 5 \D */
632 OP_DIGIT, /* 6 \d */
633 OP_NOT_WHITESPACE, /* 7 \S */
634 OP_WHITESPACE, /* 8 \s */
635 OP_NOT_WORDCHAR, /* 9 \W */
636 OP_WORDCHAR, /* 10 \w */
637 OP_ANY, /* 11 Match any character */
638 OP_ANYBYTE, /* 12 Match any byte (\C); different to OP_ANY for UTF-8 */
639 OP_NOTPROP, /* 13 \P (not Unicode property) */
640 OP_PROP, /* 14 \p (Unicode property) */
641 OP_ANYNL, /* 15 \R (any newline sequence) */
642 OP_EXTUNI, /* 16 \X (extended Unicode sequence */
643 OP_EODN, /* 17 End of data or \n at end of data: \Z. */
644 OP_EOD, /* 18 End of data: \z */
645
646 OP_OPT, /* 19 Set runtime options */
647 OP_CIRC, /* 20 Start of line - varies with multiline switch */
648 OP_DOLL, /* 21 End of line - varies with multiline switch */
649 OP_CHAR, /* 22 Match one character, casefully */
650 OP_CHARNC, /* 23 Match one character, caselessly */
651 OP_NOT, /* 24 Match one character, not the following one */
652
653 OP_STAR, /* 25 The maximizing and minimizing versions of */
654 OP_MINSTAR, /* 26 these six opcodes must come in pairs, with */
655 OP_PLUS, /* 27 the minimizing one second. */
656 OP_MINPLUS, /* 28 This first set applies to single characters.*/
657 OP_QUERY, /* 29 */
658 OP_MINQUERY, /* 30 */
659
660 OP_UPTO, /* 31 From 0 to n matches */
661 OP_MINUPTO, /* 32 */
662 OP_EXACT, /* 33 Exactly n matches */
663
664 OP_POSSTAR, /* 34 Possessified star */
665 OP_POSPLUS, /* 35 Possessified plus */
666 OP_POSQUERY, /* 36 Posesssified query */
667 OP_POSUPTO, /* 37 Possessified upto */
668
669 OP_NOTSTAR, /* 38 The maximizing and minimizing versions of */
670 OP_NOTMINSTAR, /* 39 these six opcodes must come in pairs, with */
671 OP_NOTPLUS, /* 40 the minimizing one second. They must be in */
672 OP_NOTMINPLUS, /* 41 exactly the same order as those above. */
673 OP_NOTQUERY, /* 42 This set applies to "not" single characters. */
674 OP_NOTMINQUERY, /* 43 */
675
676 OP_NOTUPTO, /* 44 From 0 to n matches */
677 OP_NOTMINUPTO, /* 45 */
678 OP_NOTEXACT, /* 46 Exactly n matches */
679
680 OP_NOTPOSSTAR, /* 47 Possessified versions */
681 OP_NOTPOSPLUS, /* 48 */
682 OP_NOTPOSQUERY, /* 49 */
683 OP_NOTPOSUPTO, /* 50 */
684
685 OP_TYPESTAR, /* 51 The maximizing and minimizing versions of */
686 OP_TYPEMINSTAR, /* 52 these six opcodes must come in pairs, with */
687 OP_TYPEPLUS, /* 53 the minimizing one second. These codes must */
688 OP_TYPEMINPLUS, /* 54 be in exactly the same order as those above. */
689 OP_TYPEQUERY, /* 55 This set applies to character types such as \d */
690 OP_TYPEMINQUERY, /* 56 */
691
692 OP_TYPEUPTO, /* 57 From 0 to n matches */
693 OP_TYPEMINUPTO, /* 58 */
694 OP_TYPEEXACT, /* 59 Exactly n matches */
695
696 OP_TYPEPOSSTAR, /* 60 Possessified versions */
697 OP_TYPEPOSPLUS, /* 61 */
698 OP_TYPEPOSQUERY, /* 62 */
699 OP_TYPEPOSUPTO, /* 63 */
700
701 OP_CRSTAR, /* 64 The maximizing and minimizing versions of */
702 OP_CRMINSTAR, /* 65 all these opcodes must come in pairs, with */
703 OP_CRPLUS, /* 66 the minimizing one second. These codes must */
704 OP_CRMINPLUS, /* 67 be in exactly the same order as those above. */
705 OP_CRQUERY, /* 68 These are for character classes and back refs */
706 OP_CRMINQUERY, /* 69 */
707 OP_CRRANGE, /* 70 These are different to the three sets above. */
708 OP_CRMINRANGE, /* 71 */
709
710 OP_CLASS, /* 72 Match a character class, chars < 256 only */
711 OP_NCLASS, /* 73 Same, but the bitmap was created from a negative
712 class - the difference is relevant only when a UTF-8
713 character > 255 is encountered. */
714
715 OP_XCLASS, /* 74 Extended class for handling UTF-8 chars within the
716 class. This does both positive and negative. */
717
718 OP_REF, /* 75 Match a back reference */
719 OP_RECURSE, /* 76 Match a numbered subpattern (possibly recursive) */
720 OP_CALLOUT, /* 77 Call out to external function if provided */
721
722 OP_ALT, /* 78 Start of alternation */
723 OP_KET, /* 79 End of group that doesn't have an unbounded repeat */
724 OP_KETRMAX, /* 80 These two must remain together and in this */
725 OP_KETRMIN, /* 81 order. They are for groups the repeat for ever. */
726
727 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
728
729 OP_ASSERT, /* 82 Positive lookahead */
730 OP_ASSERT_NOT, /* 83 Negative lookahead */
731 OP_ASSERTBACK, /* 84 Positive lookbehind */
732 OP_ASSERTBACK_NOT, /* 85 Negative lookbehind */
733 OP_REVERSE, /* 86 Move pointer back - used in lookbehind assertions */
734
735 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
736 as there's a test for >= ONCE for a subpattern that isn't an assertion. */
737
738 OP_ONCE, /* 87 Atomic group */
739 OP_BRA, /* 88 Start of non-capturing bracket */
740 OP_CBRA, /* 89 Start of capturing bracket */
741 OP_COND, /* 90 Conditional group */
742
743 /* These three must follow the previous three, in the same order. There's a
744 check for >= SBRA to distinguish the two sets. */
745
746 OP_SBRA, /* 91 Start of non-capturing bracket, check empty */
747 OP_SCBRA, /* 92 Start of capturing bracket, check empty */
748 OP_SCOND, /* 93 Conditional group, check empty */
749
750 OP_CREF, /* 94 Used to hold a capture number as condition */
751 OP_RREF, /* 95 Used to hold a recursion number as condition */
752 OP_DEF, /* 96 The DEFINE condition */
753
754 OP_BRAZERO, /* 97 These two must remain together and in this */
755 OP_BRAMINZERO /* 98 order. */
756 };
757
758
759 /* This macro defines textual names for all the opcodes. These are used only
760 for debugging. The macro is referenced only in pcre_printint.c. */
761
762 #define OP_NAME_LIST \
763 "End", "\\A", "\\G", "\\B", "\\b", "\\D", "\\d", \
764 "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte", \
765 "notprop", "prop", "anynl", "extuni", \
766 "\\Z", "\\z", \
767 "Opt", "^", "$", "char", "charnc", "not", \
768 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
769 "*+","++", "?+", "{", \
770 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
771 "*+","++", "?+", "{", \
772 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
773 "*+","++", "?+", "{", \
774 "*", "*?", "+", "+?", "?", "??", "{", "{", \
775 "class", "nclass", "xclass", "Ref", "Recurse", "Callout", \
776 "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
777 "AssertB", "AssertB not", "Reverse", \
778 "Once", "Bra 0", "Bra", "Cond", "SBra 0", "SBra", "SCond", \
779 "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero"
780
781
782 /* This macro defines the length of fixed length operations in the compiled
783 regex. The lengths are used when searching for specific things, and also in the
784 debugging printing of a compiled regex. We use a macro so that it can be
785 defined close to the definitions of the opcodes themselves.
786
787 As things have been extended, some of these are no longer fixed lenths, but are
788 minima instead. For example, the length of a single-character repeat may vary
789 in UTF-8 mode. The code that uses this table must know about such things. */
790
791 #define OP_LENGTHS \
792 1, /* End */ \
793 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* \A, \G, \B, \B, \D, \d, \S, \s, \W, \w */ \
794 1, 1, /* Any, Anybyte */ \
795 3, 3, 1, 1, /* NOTPROP, PROP, EXTUNI, ANYNL */ \
796 1, 1, 2, 1, 1, /* \Z, \z, Opt, ^, $ */ \
797 2, /* Char - the minimum length */ \
798 2, /* Charnc - the minimum length */ \
799 2, /* not */ \
800 /* Positive single-char repeats ** These are */ \
801 2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
802 4, 4, 4, /* upto, minupto, exact ** UTF-8 mode */ \
803 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
804 /* Negative single-char repeats - only for chars < 256 */ \
805 2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
806 4, 4, 4, /* NOT upto, minupto, exact */ \
807 2, 2, 2, 4, /* Possessive *, +, ?, upto */ \
808 /* Positive type repeats */ \
809 2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
810 4, 4, 4, /* Type upto, minupto, exact */ \
811 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
812 /* Character class & ref repeats */ \
813 1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
814 5, 5, /* CRRANGE, CRMINRANGE */ \
815 33, /* CLASS */ \
816 33, /* NCLASS */ \
817 0, /* XCLASS - variable length */ \
818 3, /* REF */ \
819 1+LINK_SIZE, /* RECURSE */ \
820 2+2*LINK_SIZE, /* CALLOUT */ \
821 1+LINK_SIZE, /* Alt */ \
822 1+LINK_SIZE, /* Ket */ \
823 1+LINK_SIZE, /* KetRmax */ \
824 1+LINK_SIZE, /* KetRmin */ \
825 1+LINK_SIZE, /* Assert */ \
826 1+LINK_SIZE, /* Assert not */ \
827 1+LINK_SIZE, /* Assert behind */ \
828 1+LINK_SIZE, /* Assert behind not */ \
829 1+LINK_SIZE, /* Reverse */ \
830 1+LINK_SIZE, /* ONCE */ \
831 1+LINK_SIZE, /* BRA */ \
832 3+LINK_SIZE, /* CBRA */ \
833 1+LINK_SIZE, /* COND */ \
834 1+LINK_SIZE, /* SBRA */ \
835 3+LINK_SIZE, /* SCBRA */ \
836 1+LINK_SIZE, /* SCOND */ \
837 3, /* CREF */ \
838 3, /* RREF */ \
839 1, /* DEF */ \
840 1, 1, /* BRAZERO, BRAMINZERO */ \
841
842
843 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
844
845 #define RREF_ANY 0xffff
846
847 /* Error code numbers. They are given names so that they can more easily be
848 tracked. */
849
850 enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
851 ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
852 ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
853 ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
854 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
855 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57 };
856
857 /* The real format of the start of the pcre block; the index of names and the
858 code vector run on as long as necessary after the end. We store an explicit
859 offset to the name table so that if a regex is compiled on one host, saved, and
860 then run on another where the size of pointers is different, all might still
861 be well. For the case of compiled-on-4 and run-on-8, we include an extra
862 pointer that is always NULL. For future-proofing, a few dummy fields were
863 originally included - even though you can never get this planning right - but
864 there is only one left now.
865
866 NOTE NOTE NOTE:
867 Because people can now save and re-use compiled patterns, any additions to this
868 structure should be made at the end, and something earlier (e.g. a new
869 flag in the options or one of the dummy fields) should indicate that the new
870 fields are present. Currently PCRE always sets the dummy fields to zero.
871 NOTE NOTE NOTE:
872 */
873
874 typedef struct real_pcre {
875 pcre_uint32 magic_number;
876 pcre_uint32 size; /* Total that was malloced */
877 pcre_uint32 options;
878 pcre_uint32 dummy1; /* For future use, maybe */
879
880 pcre_uint16 top_bracket;
881 pcre_uint16 top_backref;
882 pcre_uint16 first_byte;
883 pcre_uint16 req_byte;
884 pcre_uint16 name_table_offset; /* Offset to name table that follows */
885 pcre_uint16 name_entry_size; /* Size of any name items */
886 pcre_uint16 name_count; /* Number of name items */
887 pcre_uint16 ref_count; /* Reference count */
888
889 const unsigned char *tables; /* Pointer to tables or NULL for std */
890 const unsigned char *nullpad; /* NULL padding */
891 } real_pcre;
892
893 /* The format of the block used to store data from pcre_study(). The same
894 remark (see NOTE above) about extending this structure applies. */
895
896 typedef struct pcre_study_data {
897 pcre_uint32 size; /* Total that was malloced */
898 pcre_uint32 options;
899 uschar start_bits[32];
900 } pcre_study_data;
901
902 /* Structure for passing "static" information around between the functions
903 doing the compiling, so that they are thread-safe. */
904
905 typedef struct compile_data {
906 const uschar *lcc; /* Points to lower casing table */
907 const uschar *fcc; /* Points to case-flipping table */
908 const uschar *cbits; /* Points to character type table */
909 const uschar *ctypes; /* Points to table of type maps */
910 const uschar *start_workspace;/* The start of working space */
911 const uschar *start_code; /* The start of the compiled code */
912 const uschar *start_pattern; /* The start of the pattern */
913 const uschar *end_pattern; /* The end of the pattern */
914 uschar *hwm; /* High watermark of workspace */
915 uschar *name_table; /* The name/number table */
916 int names_found; /* Number of entries so far */
917 int name_entry_size; /* Size of each entry */
918 int bracount; /* Count of capturing parens */
919 int top_backref; /* Maximum back reference */
920 unsigned int backref_map; /* Bitmap of low back refs */
921 int external_options; /* External (initial) options */
922 int req_varyopt; /* "After variable item" flag for reqbyte */
923 BOOL nopartial; /* Set TRUE if partial won't work */
924 int nltype; /* Newline type */
925 int nllen; /* Newline string length */
926 uschar nl[4]; /* Newline string when fixed length */
927 } compile_data;
928
929 /* Structure for maintaining a chain of pointers to the currently incomplete
930 branches, for testing for left recursion. */
931
932 typedef struct branch_chain {
933 struct branch_chain *outer;
934 uschar *current;
935 } branch_chain;
936
937 /* Structure for items in a linked list that represents an explicit recursive
938 call within the pattern. */
939
940 typedef struct recursion_info {
941 struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
942 int group_num; /* Number of group that was called */
943 const uschar *after_call; /* "Return value": points after the call in the expr */
944 USPTR save_start; /* Old value of md->start_match */
945 int *offset_save; /* Pointer to start of saved offsets */
946 int saved_max; /* Number of saved offsets */
947 } recursion_info;
948
949 /* When compiling in a mode that doesn't use recursive calls to match(),
950 a structure is used to remember local variables on the heap. It is defined in
951 pcre_exec.c, close to the match() function, so that it is easy to keep it in
952 step with any changes of local variable. However, the pointer to the current
953 frame must be saved in some "static" place over a longjmp(). We declare the
954 structure here so that we can put a pointer in the match_data structure. NOTE:
955 This isn't used for a "normal" compilation of pcre. */
956
957 struct heapframe;
958
959 /* Structure for building a chain of data for holding the values of the subject
960 pointer at the start of each subpattern, so as to detect when an empty string
961 has been matched by a subpattern - to break infinite loops. */
962
963 typedef struct eptrblock {
964 struct eptrblock *epb_prev;
965 USPTR epb_saved_eptr;
966 } eptrblock;
967
968
969 /* Structure for passing "static" information around between the functions
970 doing traditional NFA matching, so that they are thread-safe. */
971
972 typedef struct match_data {
973 unsigned long int match_call_count; /* As it says */
974 unsigned long int match_limit; /* As it says */
975 unsigned long int match_limit_recursion; /* As it says */
976 int *offset_vector; /* Offset vector */
977 int offset_end; /* One past the end */
978 int offset_max; /* The maximum usable for return data */
979 int nltype; /* Newline type */
980 int nllen; /* Newline string length */
981 uschar nl[4]; /* Newline string when fixed */
982 const uschar *lcc; /* Points to lower casing table */
983 const uschar *ctypes; /* Points to table of type maps */
984 BOOL offset_overflow; /* Set if too many extractions */
985 BOOL notbol; /* NOTBOL flag */
986 BOOL noteol; /* NOTEOL flag */
987 BOOL utf8; /* UTF8 flag */
988 BOOL endonly; /* Dollar not before final \n */
989 BOOL notempty; /* Empty string match not wanted */
990 BOOL partial; /* PARTIAL flag */
991 BOOL hitend; /* Hit the end of the subject at some point */
992 const uschar *start_code; /* For use when recursing */
993 USPTR start_subject; /* Start of the subject string */
994 USPTR end_subject; /* End of the subject string */
995 USPTR start_match; /* Start of this match attempt */
996 USPTR end_match_ptr; /* Subject position at end match */
997 int end_offset_top; /* Highwater mark at end of match */
998 int capture_last; /* Most recent capture number */
999 int start_offset; /* The start offset value */
1000 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1001 int eptrn; /* Next free eptrblock */
1002 recursion_info *recursive; /* Linked list of recursion data */
1003 void *callout_data; /* To pass back to callouts */
1004 struct heapframe *thisframe; /* Used only when compiling for no recursion */
1005 } match_data;
1006
1007 /* A similar structure is used for the same purpose by the DFA matching
1008 functions. */
1009
1010 typedef struct dfa_match_data {
1011 const uschar *start_code; /* Start of the compiled pattern */
1012 const uschar *start_subject; /* Start of the subject string */
1013 const uschar *end_subject; /* End of subject string */
1014 const uschar *tables; /* Character tables */
1015 int moptions; /* Match options */
1016 int poptions; /* Pattern options */
1017 int nltype; /* Newline type */
1018 int nllen; /* Newline string length */
1019 uschar nl[4]; /* Newline string when fixed */
1020 void *callout_data; /* To pass back to callouts */
1021 } dfa_match_data;
1022
1023 /* Bit definitions for entries in the pcre_ctypes table. */
1024
1025 #define ctype_space 0x01
1026 #define ctype_letter 0x02
1027 #define ctype_digit 0x04
1028 #define ctype_xdigit 0x08
1029 #define ctype_word 0x10 /* alphameric or '_' */
1030 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1031
1032 /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1033 of bits for a class map. Some classes are built by combining these tables. */
1034
1035 #define cbit_space 0 /* [:space:] or \s */
1036 #define cbit_xdigit 32 /* [:xdigit:] */
1037 #define cbit_digit 64 /* [:digit:] or \d */
1038 #define cbit_upper 96 /* [:upper:] */
1039 #define cbit_lower 128 /* [:lower:] */
1040 #define cbit_word 160 /* [:word:] or \w */
1041 #define cbit_graph 192 /* [:graph:] */
1042 #define cbit_print 224 /* [:print:] */
1043 #define cbit_punct 256 /* [:punct:] */
1044 #define cbit_cntrl 288 /* [:cntrl:] */
1045 #define cbit_length 320 /* Length of the cbits table */
1046
1047 /* Offsets of the various tables from the base tables pointer, and
1048 total length. */
1049
1050 #define lcc_offset 0
1051 #define fcc_offset 256
1052 #define cbits_offset 512
1053 #define ctypes_offset (cbits_offset + cbit_length)
1054 #define tables_length (ctypes_offset + 256)
1055
1056 /* Layout of the UCP type table that translates property names into types and
1057 codes. */
1058
1059 typedef struct {
1060 const char *name;
1061 pcre_uint16 type;
1062 pcre_uint16 value;
1063 } ucp_type_table;
1064
1065
1066 /* Internal shared data tables. These are tables that are used by more than one
1067 of the exported public functions. They have to be "external" in the C sense,
1068 but are not part of the PCRE public API. The data for these tables is in the
1069 pcre_tables.c module. */
1070
1071 extern const int _pcre_utf8_table1[];
1072 extern const int _pcre_utf8_table2[];
1073 extern const int _pcre_utf8_table3[];
1074 extern const uschar _pcre_utf8_table4[];
1075
1076 extern const int _pcre_utf8_table1_size;
1077
1078 extern const ucp_type_table _pcre_utt[];
1079 extern const int _pcre_utt_size;
1080
1081 extern const uschar _pcre_default_tables[];
1082
1083 extern const uschar _pcre_OP_lengths[];
1084
1085
1086 /* Internal shared functions. These are functions that are used by more than
1087 one of the exported public functions. They have to be "external" in the C
1088 sense, but are not part of the PCRE public API. */
1089
1090 extern BOOL _pcre_is_newline(const uschar *, const uschar *, int *,
1091 BOOL);
1092 extern int _pcre_ord2utf8(int, uschar *);
1093 extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1094 const pcre_study_data *, pcre_study_data *);
1095 extern int _pcre_ucp_findprop(const unsigned int, int *, int *);
1096 extern unsigned int _pcre_ucp_othercase(const unsigned int);
1097 extern int _pcre_valid_utf8(const uschar *, int);
1098 extern BOOL _pcre_was_newline(const uschar *, const uschar *, int *,
1099 BOOL);
1100 extern BOOL _pcre_xclass(int, const uschar *);
1101
1102 #endif
1103
1104 /* End of pcre_internal.h */

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