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

Contents of /code/trunk/pcre_internal.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 392 - (hide annotations) (download)
Tue Mar 17 21:30:30 2009 UTC (5 years, 8 months ago) by ph10
File MIME type: text/plain
File size: 71361 byte(s)
Update after detrailing for a test release.

1 nigel 77 /*************************************************
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 ph10 376 Copyright (c) 1997-2009 University of Cambridge
11 nigel 77
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 nigel 85 #ifndef PCRE_INTERNAL_H
46     #define PCRE_INTERNAL_H
47 nigel 77
48     /* Define DEBUG to get debugging output on stdout. */
49    
50 nigel 85 #if 0
51 nigel 77 #define DEBUG
52 nigel 85 #endif
53 nigel 77
54 ph10 392 /* We do not support both EBCDIC and UTF-8 at the same time. The "configure"
55 ph10 391 script prevents both being selected, but not everybody uses "configure". */
56    
57     #if defined EBCDIC && defined SUPPORT_UTF8
58     #error The use of both EBCDIC and SUPPORT_UTF8 is not supported.
59     #endif
60    
61 nigel 77 /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
62     inline, and there are *still* stupid compilers about that don't like indented
63     pre-processor statements, or at least there were when I first wrote this. After
64 nigel 93 all, it had only been about 10 years then...
65 nigel 77
66 nigel 93 It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
67     be absolutely sure we get our version. */
68    
69     #undef DPRINTF
70 nigel 77 #ifdef DEBUG
71     #define DPRINTF(p) printf p
72     #else
73 nigel 93 #define DPRINTF(p) /* Nothing */
74 nigel 77 #endif
75    
76    
77     /* Standard C headers plus the external interface definition. The only time
78     setjmp and stdarg are used is when NO_RECURSE is set. */
79    
80     #include <ctype.h>
81     #include <limits.h>
82     #include <setjmp.h>
83     #include <stdarg.h>
84     #include <stddef.h>
85     #include <stdio.h>
86     #include <stdlib.h>
87     #include <string.h>
88    
89 ph10 145 /* When compiling a DLL for Windows, the exported symbols have to be declared
90     using some MS magic. I found some useful information on this web page:
91     http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
92 ph10 154 information there, using __declspec(dllexport) without "extern" we have a
93 ph10 145 definition; with "extern" we have a declaration. The settings here override the
94     setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
95 ph10 154 which is all that is needed for applications (they just import the symbols). We
96     use:
97 ph10 145
98     PCRE_EXP_DECL for declarations
99     PCRE_EXP_DEFN for definitions of exported functions
100     PCRE_EXP_DATA_DEFN for definitions of exported variables
101    
102     The reason for the two DEFN macros is that in non-Windows environments, one
103     does not want to have "extern" before variable definitions because it leads to
104     compiler warnings. So we distinguish between functions and variables. In
105     Windows, the two should always be the same.
106    
107     The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
108     which is an application, but needs to import this file in order to "peek" at
109 ph10 154 internals, can #include pcre.h first to get an application's-eye view.
110 ph10 145
111     In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
112     special-purpose environments) might want to stick other stuff in front of
113     exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
114     PCRE_EXP_DATA_DEFN only if they are not already set. */
115    
116     #ifndef PCRE_EXP_DECL
117     # ifdef _WIN32
118 ph10 199 # ifndef PCRE_STATIC
119 ph10 145 # define PCRE_EXP_DECL extern __declspec(dllexport)
120     # define PCRE_EXP_DEFN __declspec(dllexport)
121     # define PCRE_EXP_DATA_DEFN __declspec(dllexport)
122     # else
123     # define PCRE_EXP_DECL extern
124     # define PCRE_EXP_DEFN
125     # define PCRE_EXP_DATA_DEFN
126     # endif
127     # else
128     # ifdef __cplusplus
129     # define PCRE_EXP_DECL extern "C"
130     # else
131     # define PCRE_EXP_DECL extern
132     # endif
133     # ifndef PCRE_EXP_DEFN
134     # define PCRE_EXP_DEFN PCRE_EXP_DECL
135     # endif
136     # ifndef PCRE_EXP_DATA_DEFN
137     # define PCRE_EXP_DATA_DEFN
138     # endif
139     # endif
140 nigel 77 #endif
141    
142 ph10 359 /* When compiling with the MSVC compiler, it is sometimes necessary to include
143 ph10 371 a "calling convention" before exported function names. (This is secondhand
144 ph10 359 information; I know nothing about MSVC myself). For example, something like
145    
146     void __cdecl function(....)
147 ph10 371
148 ph10 359 might be needed. In order so make this easy, all the exported functions have
149     PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
150 ph10 371 set, we ensure here that it has no effect. */
151 ph10 359
152     #ifndef PCRE_CALL_CONVENTION
153     #define PCRE_CALL_CONVENTION
154     #endif
155    
156 nigel 77 /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
157     cannot determine these outside the compilation (e.g. by running a program as
158     part of "configure") because PCRE is often cross-compiled for use on other
159     systems. Instead we make use of the maximum sizes that are available at
160     preprocessor time in standard C environments. */
161    
162     #if USHRT_MAX == 65535
163     typedef unsigned short pcre_uint16;
164 ph10 349 typedef short pcre_int16;
165 nigel 77 #elif UINT_MAX == 65535
166     typedef unsigned int pcre_uint16;
167 ph10 349 typedef int pcre_int16;
168 nigel 77 #else
169     #error Cannot determine a type for 16-bit unsigned integers
170     #endif
171    
172     #if UINT_MAX == 4294967295
173     typedef unsigned int pcre_uint32;
174 ph10 349 typedef int pcre_int32;
175 nigel 77 #elif ULONG_MAX == 4294967295
176     typedef unsigned long int pcre_uint32;
177 ph10 349 typedef long int pcre_int32;
178 nigel 77 #else
179     #error Cannot determine a type for 32-bit unsigned integers
180     #endif
181    
182     /* All character handling must be done as unsigned characters. Otherwise there
183     are problems with top-bit-set characters and functions such as isspace().
184     However, we leave the interface to the outside world as char *, because that
185     should make things easier for callers. We define a short type for unsigned char
186     to save lots of typing. I tried "uchar", but it causes problems on Digital
187     Unix, where it is defined in sys/types, so use "uschar" instead. */
188    
189     typedef unsigned char uschar;
190    
191 nigel 93 /* This is an unsigned int value that no character can ever have. UTF-8
192     characters only go up to 0x7fffffff (though Unicode doesn't go beyond
193     0x0010ffff). */
194 nigel 91
195 nigel 93 #define NOTACHAR 0xffffffff
196    
197     /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
198 ph10 149 "any" and "anycrlf" at present). The following macros are used to package up
199     testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
200     modules to indicate in which datablock the parameters exist, and what the
201     start/end of string field names are. */
202 nigel 93
203 ph10 149 #define NLTYPE_FIXED 0 /* Newline is a fixed length string */
204     #define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
205     #define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
206 nigel 93
207     /* This macro checks for a newline at the given position */
208    
209 nigel 91 #define IS_NEWLINE(p) \
210 nigel 93 ((NLBLOCK->nltype != NLTYPE_FIXED)? \
211     ((p) < NLBLOCK->PSEND && \
212 ph10 149 _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\
213     utf8)) \
214 nigel 93 : \
215     ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
216     (p)[0] == NLBLOCK->nl[0] && \
217     (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
218     ) \
219     )
220 nigel 91
221 nigel 93 /* This macro checks for a newline immediately preceding the given position */
222    
223     #define WAS_NEWLINE(p) \
224     ((NLBLOCK->nltype != NLTYPE_FIXED)? \
225     ((p) > NLBLOCK->PSSTART && \
226 ph10 149 _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
227     &(NLBLOCK->nllen), utf8)) \
228 nigel 93 : \
229     ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
230     (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
231     (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
232     ) \
233     )
234    
235 nigel 87 /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
236     with a custom type. This makes it possible, for example, to allow pcre_exec()
237     to process subject strings that are discontinuous by using a smart pointer
238     class. It must always be possible to inspect all of the subject string in
239     pcre_exec() because of the way it backtracks. Two macros are required in the
240     normal case, for sign-unspecified and unsigned char pointers. The former is
241     used for the external interface and appears in pcre.h, which is why its name
242     must begin with PCRE_. */
243    
244     #ifdef CUSTOM_SUBJECT_PTR
245     #define PCRE_SPTR CUSTOM_SUBJECT_PTR
246     #define USPTR CUSTOM_SUBJECT_PTR
247     #else
248     #define PCRE_SPTR const char *
249     #define USPTR const unsigned char *
250     #endif
251    
252 ph10 145
253    
254 nigel 85 /* Include the public PCRE header and the definitions of UCP character property
255     values. */
256 nigel 77
257 ph10 189 #include "pcre.h"
258 nigel 77 #include "ucp.h"
259    
260     /* When compiling for use with the Virtual Pascal compiler, these functions
261     need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
262     option on the command line. */
263    
264     #ifdef VPCOMPAT
265 ph10 101 #define strlen(s) _strlen(s)
266 nigel 77 #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
267 ph10 101 #define memcmp(s,c,n) _memcmp(s,c,n)
268 nigel 77 #define memcpy(d,s,n) _memcpy(d,s,n)
269     #define memmove(d,s,n) _memmove(d,s,n)
270     #define memset(s,c,n) _memset(s,c,n)
271     #else /* VPCOMPAT */
272    
273     /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
274     define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
275     is set. Otherwise, include an emulating function for those systems that have
276 ph10 118 neither (there some non-Unix environments where this is the case). */
277 nigel 77
278 ph10 137 #ifndef HAVE_MEMMOVE
279 nigel 77 #undef memmove /* some systems may have a macro */
280 ph10 137 #ifdef HAVE_BCOPY
281 nigel 77 #define memmove(a, b, c) bcopy(b, a, c)
282     #else /* HAVE_BCOPY */
283 nigel 91 static void *
284 ph10 108 pcre_memmove(void *d, const void *s, size_t n)
285 nigel 77 {
286 nigel 87 size_t i;
287 ph10 108 unsigned char *dest = (unsigned char *)d;
288     const unsigned char *src = (const unsigned char *)s;
289 ph10 118 if (dest > src)
290     {
291     dest += n;
292     src += n;
293     for (i = 0; i < n; ++i) *(--dest) = *(--src);
294     return (void *)dest;
295     }
296     else
297     {
298     for (i = 0; i < n; ++i) *dest++ = *src++;
299 ph10 123 return (void *)(dest - n);
300     }
301 nigel 77 }
302     #define memmove(a, b, c) pcre_memmove(a, b, c)
303     #endif /* not HAVE_BCOPY */
304     #endif /* not HAVE_MEMMOVE */
305     #endif /* not VPCOMPAT */
306    
307    
308     /* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
309     in big-endian order) by default. These are used, for example, to link from the
310     start of a subpattern to its alternatives and its end. The use of 2 bytes per
311     offset limits the size of the compiled regex to around 64K, which is big enough
312     for almost everybody. However, I received a request for an even bigger limit.
313     For this reason, and also to make the code easier to maintain, the storing and
314     loading of offsets from the byte string is now handled by the macros that are
315     defined here.
316    
317     The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
318     the config.h file, but can be overridden by using -D on the command line. This
319     is automated on Unix systems via the "configure" command. */
320    
321     #if LINK_SIZE == 2
322    
323     #define PUT(a,n,d) \
324     (a[n] = (d) >> 8), \
325     (a[(n)+1] = (d) & 255)
326    
327     #define GET(a,n) \
328     (((a)[n] << 8) | (a)[(n)+1])
329    
330     #define MAX_PATTERN_SIZE (1 << 16)
331    
332    
333     #elif LINK_SIZE == 3
334    
335     #define PUT(a,n,d) \
336     (a[n] = (d) >> 16), \
337     (a[(n)+1] = (d) >> 8), \
338     (a[(n)+2] = (d) & 255)
339    
340     #define GET(a,n) \
341     (((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
342    
343     #define MAX_PATTERN_SIZE (1 << 24)
344    
345    
346     #elif LINK_SIZE == 4
347    
348     #define PUT(a,n,d) \
349     (a[n] = (d) >> 24), \
350     (a[(n)+1] = (d) >> 16), \
351     (a[(n)+2] = (d) >> 8), \
352     (a[(n)+3] = (d) & 255)
353    
354     #define GET(a,n) \
355     (((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
356    
357     #define MAX_PATTERN_SIZE (1 << 30) /* Keep it positive */
358    
359    
360     #else
361     #error LINK_SIZE must be either 2, 3, or 4
362     #endif
363    
364    
365     /* Convenience macro defined in terms of the others */
366    
367     #define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
368    
369    
370     /* PCRE uses some other 2-byte quantities that do not change when the size of
371     offsets changes. There are used for repeat counts and for other things such as
372     capturing parenthesis numbers in back references. */
373    
374     #define PUT2(a,n,d) \
375     a[n] = (d) >> 8; \
376     a[(n)+1] = (d) & 255
377    
378     #define GET2(a,n) \
379     (((a)[n] << 8) | (a)[(n)+1])
380    
381     #define PUT2INC(a,n,d) PUT2(a,n,d), a += 2
382    
383    
384     /* When UTF-8 encoding is being used, a character is no longer just a single
385     byte. The macros for character handling generate simple sequences when used in
386 ph10 208 byte-mode, and more complicated ones for UTF-8 characters. BACKCHAR should
387     never be called in byte mode. To make sure it can never even appear when UTF-8
388 ph10 207 support is omitted, we don't even define it. */
389 nigel 77
390     #ifndef SUPPORT_UTF8
391     #define GETCHAR(c, eptr) c = *eptr;
392     #define GETCHARTEST(c, eptr) c = *eptr;
393     #define GETCHARINC(c, eptr) c = *eptr++;
394     #define GETCHARINCTEST(c, eptr) c = *eptr++;
395     #define GETCHARLEN(c, eptr, len) c = *eptr;
396 ph10 207 /* #define BACKCHAR(eptr) */
397 nigel 77
398     #else /* SUPPORT_UTF8 */
399    
400     /* Get the next UTF-8 character, not advancing the pointer. This is called when
401     we know we are in UTF-8 mode. */
402    
403     #define GETCHAR(c, eptr) \
404     c = *eptr; \
405 nigel 93 if (c >= 0xc0) \
406 nigel 77 { \
407     int gcii; \
408     int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
409     int gcss = 6*gcaa; \
410     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
411     for (gcii = 1; gcii <= gcaa; gcii++) \
412     { \
413     gcss -= 6; \
414     c |= (eptr[gcii] & 0x3f) << gcss; \
415     } \
416     }
417    
418     /* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
419     pointer. */
420    
421     #define GETCHARTEST(c, eptr) \
422     c = *eptr; \
423 nigel 93 if (utf8 && c >= 0xc0) \
424 nigel 77 { \
425     int gcii; \
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     for (gcii = 1; gcii <= gcaa; gcii++) \
430     { \
431     gcss -= 6; \
432     c |= (eptr[gcii] & 0x3f) << gcss; \
433     } \
434     }
435    
436     /* Get the next UTF-8 character, advancing the pointer. This is called when we
437     know we are in UTF-8 mode. */
438    
439     #define GETCHARINC(c, eptr) \
440     c = *eptr++; \
441 nigel 93 if (c >= 0xc0) \
442 nigel 77 { \
443     int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
444     int gcss = 6*gcaa; \
445     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
446     while (gcaa-- > 0) \
447     { \
448     gcss -= 6; \
449     c |= (*eptr++ & 0x3f) << gcss; \
450     } \
451     }
452    
453     /* Get the next character, testing for UTF-8 mode, and advancing the pointer */
454    
455     #define GETCHARINCTEST(c, eptr) \
456     c = *eptr++; \
457 nigel 93 if (utf8 && c >= 0xc0) \
458 nigel 77 { \
459     int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
460     int gcss = 6*gcaa; \
461     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
462     while (gcaa-- > 0) \
463     { \
464     gcss -= 6; \
465     c |= (*eptr++ & 0x3f) << gcss; \
466     } \
467     }
468    
469     /* Get the next UTF-8 character, not advancing the pointer, incrementing length
470     if there are extra bytes. This is called when we know we are in UTF-8 mode. */
471    
472     #define GETCHARLEN(c, eptr, len) \
473     c = *eptr; \
474 nigel 93 if (c >= 0xc0) \
475 nigel 77 { \
476     int gcii; \
477     int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
478     int gcss = 6*gcaa; \
479     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
480     for (gcii = 1; gcii <= gcaa; gcii++) \
481     { \
482     gcss -= 6; \
483     c |= (eptr[gcii] & 0x3f) << gcss; \
484     } \
485     len += gcaa; \
486     }
487    
488 ph10 384 /* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
489     pointer, incrementing length if there are extra bytes. This is called when we
490     know we are in UTF-8 mode. */
491    
492     #define GETCHARLENTEST(c, eptr, len) \
493     c = *eptr; \
494     if (utf8 && c >= 0xc0) \
495     { \
496     int gcii; \
497     int gcaa = _pcre_utf8_table4[c & 0x3f]; /* Number of additional bytes */ \
498     int gcss = 6*gcaa; \
499     c = (c & _pcre_utf8_table3[gcaa]) << gcss; \
500     for (gcii = 1; gcii <= gcaa; gcii++) \
501     { \
502     gcss -= 6; \
503     c |= (eptr[gcii] & 0x3f) << gcss; \
504     } \
505     len += gcaa; \
506     }
507    
508 nigel 77 /* If the pointer is not at the start of a character, move it back until
509 ph10 208 it is. This is called only in UTF-8 mode - we don't put a test within the macro
510 ph10 207 because almost all calls are already within a block of UTF-8 only code. */
511 nigel 77
512 ph10 207 #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
513 nigel 77
514     #endif
515    
516    
517     /* In case there is no definition of offsetof() provided - though any proper
518     Standard C system should have one. */
519    
520     #ifndef offsetof
521     #define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
522     #endif
523    
524    
525     /* These are the public options that can change during matching. */
526    
527     #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
528    
529 ph10 231 /* Private flags containing information about the compiled regex. They used to
530     live at the top end of the options word, but that got almost full, so now they
531 ph10 230 are in a 16-bit flags word. */
532 nigel 77
533 ph10 230 #define PCRE_NOPARTIAL 0x0001 /* can't use partial with this regex */
534     #define PCRE_FIRSTSET 0x0002 /* first_byte is set */
535     #define PCRE_REQCHSET 0x0004 /* req_byte is set */
536     #define PCRE_STARTLINE 0x0008 /* start after \n for multiline */
537     #define PCRE_JCHANGED 0x0010 /* j option used in regex */
538     #define PCRE_HASCRORLF 0x0020 /* explicit \r or \n in pattern */
539 nigel 77
540     /* Options for the "extra" block produced by pcre_study(). */
541    
542     #define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
543    
544     /* Masks for identifying the public options that are permitted at compile
545     time, run time, or study time, respectively. */
546    
547 ph10 149 #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
548     PCRE_NEWLINE_ANYCRLF)
549 nigel 93
550 ph10 389 #define PUBLIC_COMPILE_OPTIONS \
551 nigel 77 (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
552     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
553 nigel 91 PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
554 ph10 336 PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
555     PCRE_JAVASCRIPT_COMPAT)
556 nigel 77
557     #define PUBLIC_EXEC_OPTIONS \
558     (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
559 ph10 389 PCRE_PARTIAL|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
560     PCRE_NO_START_OPTIMIZE)
561 nigel 77
562     #define PUBLIC_DFA_EXEC_OPTIONS \
563     (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
564 ph10 231 PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS| \
565 ph10 389 PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
566 nigel 77
567     #define PUBLIC_STUDY_OPTIONS 0 /* None defined */
568    
569     /* Magic number to provide a small check against being handed junk. Also used
570     to detect whether a pattern was compiled on a host of different endianness. */
571    
572     #define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
573    
574     /* Negative values for the firstchar and reqchar variables */
575    
576     #define REQ_UNSET (-2)
577     #define REQ_NONE (-1)
578    
579     /* The maximum remaining length of subject we are prepared to search for a
580     req_byte match. */
581    
582     #define REQ_BYTE_MAX 1000
583    
584     /* Flags added to firstbyte or reqbyte; a "non-literal" item is either a
585     variable-length repeat, or a anything other than literal characters. */
586    
587     #define REQ_CASELESS 0x0100 /* indicates caselessness */
588     #define REQ_VARY 0x0200 /* reqbyte followed non-literal item */
589    
590 ph10 369 /* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
591 ph10 376 environments where these macros are defined elsewhere. Unfortunately, there
592     is no way to do the same for the typedef. */
593 nigel 77
594     typedef int BOOL;
595    
596 ph10 376 #ifndef FALSE
597 nigel 77 #define FALSE 0
598     #define TRUE 1
599 ph10 369 #endif
600 nigel 77
601 ph10 391 /* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
602     character constants like '*' because the compiler would emit their EBCDIC code,
603 ph10 392 which is different from their ASCII/UTF-8 code. Instead we define macros for
604     the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
605     is enabled. When UTF-8 support is not enabled, the definitions use character
606     literals. Both character and string versions of each character are needed, and
607 ph10 391 there are some longer strings as well.
608    
609 ph10 392 This means that, on EBCDIC platforms, the PCRE library can handle either
610 ph10 391 EBCDIC, or UTF-8, but not both. To support both in the same compiled library
611     would need different lookups depending on whether PCRE_UTF8 was set or not.
612     This would make it impossible to use characters in switch/case statements,
613 ph10 392 which would reduce performance. For a theoretical use (which nobody has asked
614     for) in a minority area (EBCDIC platforms), this is not sensible. Any
615     application that did need both could compile two versions of the library, using
616 ph10 391 macros to give the functions distinct names. */
617    
618     #ifndef SUPPORT_UTF8
619    
620     /* UTF-8 support is not enabled; use the platform-dependent character literals
621     so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
622    
623     #define CHAR_HT '\t'
624     #define CHAR_VT '\v'
625     #define CHAR_FF '\f'
626     #define CHAR_CR '\r'
627     #define CHAR_NL '\n'
628     #define CHAR_BS '\b'
629     #define CHAR_BEL '\a'
630     #ifdef EBCDIC
631     #define CHAR_ESC '\047'
632     #define CHAR_DEL '\007'
633     #else
634     #define CHAR_ESC '\033'
635     #define CHAR_DEL '\177'
636     #endif
637    
638     #define CHAR_SPACE ' '
639     #define CHAR_EXCLAMATION_MARK '!'
640     #define CHAR_QUOTATION_MARK '"'
641     #define CHAR_NUMBER_SIGN '#'
642     #define CHAR_DOLLAR_SIGN '$'
643     #define CHAR_PERCENT_SIGN '%'
644     #define CHAR_AMPERSAND '&'
645     #define CHAR_APOSTROPHE '\''
646     #define CHAR_LEFT_PARENTHESIS '('
647     #define CHAR_RIGHT_PARENTHESIS ')'
648     #define CHAR_ASTERISK '*'
649     #define CHAR_PLUS '+'
650     #define CHAR_COMMA ','
651     #define CHAR_MINUS '-'
652     #define CHAR_DOT '.'
653     #define CHAR_SLASH '/'
654     #define CHAR_0 '0'
655     #define CHAR_1 '1'
656     #define CHAR_2 '2'
657     #define CHAR_3 '3'
658     #define CHAR_4 '4'
659     #define CHAR_5 '5'
660     #define CHAR_6 '6'
661     #define CHAR_7 '7'
662     #define CHAR_8 '8'
663     #define CHAR_9 '9'
664     #define CHAR_COLON ':'
665     #define CHAR_SEMICOLON ';'
666     #define CHAR_LESS_THAN_SIGN '<'
667     #define CHAR_EQUALS_SIGN '='
668     #define CHAR_GREATER_THAN_SIGN '>'
669     #define CHAR_QUESTION_MARK '?'
670     #define CHAR_COMMERCIAL_AT '@'
671     #define CHAR_A 'A'
672     #define CHAR_B 'B'
673     #define CHAR_C 'C'
674     #define CHAR_D 'D'
675     #define CHAR_E 'E'
676     #define CHAR_F 'F'
677     #define CHAR_G 'G'
678     #define CHAR_H 'H'
679     #define CHAR_I 'I'
680     #define CHAR_J 'J'
681     #define CHAR_K 'K'
682     #define CHAR_L 'L'
683     #define CHAR_M 'M'
684     #define CHAR_N 'N'
685     #define CHAR_O 'O'
686     #define CHAR_P 'P'
687     #define CHAR_Q 'Q'
688     #define CHAR_R 'R'
689     #define CHAR_S 'S'
690     #define CHAR_T 'T'
691     #define CHAR_U 'U'
692     #define CHAR_V 'V'
693     #define CHAR_W 'W'
694     #define CHAR_X 'X'
695     #define CHAR_Y 'Y'
696     #define CHAR_Z 'Z'
697     #define CHAR_LEFT_SQUARE_BRACKET '['
698     #define CHAR_BACKSLASH '\\'
699     #define CHAR_RIGHT_SQUARE_BRACKET ']'
700     #define CHAR_CIRCUMFLEX_ACCENT '^'
701     #define CHAR_UNDERSCORE '_'
702     #define CHAR_GRAVE_ACCENT '`'
703     #define CHAR_a 'a'
704     #define CHAR_b 'b'
705     #define CHAR_c 'c'
706     #define CHAR_d 'd'
707     #define CHAR_e 'e'
708     #define CHAR_f 'f'
709     #define CHAR_g 'g'
710     #define CHAR_h 'h'
711     #define CHAR_i 'i'
712     #define CHAR_j 'j'
713     #define CHAR_k 'k'
714     #define CHAR_l 'l'
715     #define CHAR_m 'm'
716     #define CHAR_n 'n'
717     #define CHAR_o 'o'
718     #define CHAR_p 'p'
719     #define CHAR_q 'q'
720     #define CHAR_r 'r'
721     #define CHAR_s 's'
722     #define CHAR_t 't'
723     #define CHAR_u 'u'
724     #define CHAR_v 'v'
725     #define CHAR_w 'w'
726     #define CHAR_x 'x'
727     #define CHAR_y 'y'
728     #define CHAR_z 'z'
729     #define CHAR_LEFT_CURLY_BRACKET '{'
730     #define CHAR_VERTICAL_LINE '|'
731     #define CHAR_RIGHT_CURLY_BRACKET '}'
732     #define CHAR_TILDE '~'
733    
734     #define STR_HT "\t"
735     #define STR_VT "\v"
736     #define STR_FF "\f"
737     #define STR_CR "\r"
738     #define STR_NL "\n"
739     #define STR_BS "\b"
740     #define STR_BEL "\a"
741     #ifdef EBCDIC
742     #define STR_ESC "\047"
743     #define STR_DEL "\007"
744     #else
745     #define STR_ESC "\033"
746     #define STR_DEL "\177"
747     #endif
748    
749     #define STR_SPACE " "
750     #define STR_EXCLAMATION_MARK "!"
751     #define STR_QUOTATION_MARK "\""
752     #define STR_NUMBER_SIGN "#"
753     #define STR_DOLLAR_SIGN "$"
754     #define STR_PERCENT_SIGN "%"
755     #define STR_AMPERSAND "&"
756     #define STR_APOSTROPHE "'"
757     #define STR_LEFT_PARENTHESIS "("
758     #define STR_RIGHT_PARENTHESIS ")"
759     #define STR_ASTERISK "*"
760     #define STR_PLUS "+"
761     #define STR_COMMA ","
762     #define STR_MINUS "-"
763     #define STR_DOT "."
764     #define STR_SLASH "/"
765     #define STR_0 "0"
766     #define STR_1 "1"
767     #define STR_2 "2"
768     #define STR_3 "3"
769     #define STR_4 "4"
770     #define STR_5 "5"
771     #define STR_6 "6"
772     #define STR_7 "7"
773     #define STR_8 "8"
774     #define STR_9 "9"
775     #define STR_COLON ":"
776     #define STR_SEMICOLON ";"
777     #define STR_LESS_THAN_SIGN "<"
778     #define STR_EQUALS_SIGN "="
779     #define STR_GREATER_THAN_SIGN ">"
780     #define STR_QUESTION_MARK "?"
781     #define STR_COMMERCIAL_AT "@"
782     #define STR_A "A"
783     #define STR_B "B"
784     #define STR_C "C"
785     #define STR_D "D"
786     #define STR_E "E"
787     #define STR_F "F"
788     #define STR_G "G"
789     #define STR_H "H"
790     #define STR_I "I"
791     #define STR_J "J"
792     #define STR_K "K"
793     #define STR_L "L"
794     #define STR_M "M"
795     #define STR_N "N"
796     #define STR_O "O"
797     #define STR_P "P"
798     #define STR_Q "Q"
799     #define STR_R "R"
800     #define STR_S "S"
801     #define STR_T "T"
802     #define STR_U "U"
803     #define STR_V "V"
804     #define STR_W "W"
805     #define STR_X "X"
806     #define STR_Y "Y"
807     #define STR_Z "Z"
808     #define STR_LEFT_SQUARE_BRACKET "["
809     #define STR_BACKSLASH "\\"
810     #define STR_RIGHT_SQUARE_BRACKET "]"
811     #define STR_CIRCUMFLEX_ACCENT "^"
812     #define STR_UNDERSCORE "_"
813     #define STR_GRAVE_ACCENT "`"
814     #define STR_a "a"
815     #define STR_b "b"
816     #define STR_c "c"
817     #define STR_d "d"
818     #define STR_e "e"
819     #define STR_f "f"
820     #define STR_g "g"
821     #define STR_h "h"
822     #define STR_i "i"
823     #define STR_j "j"
824     #define STR_k "k"
825     #define STR_l "l"
826     #define STR_m "m"
827     #define STR_n "n"
828     #define STR_o "o"
829     #define STR_p "p"
830     #define STR_q "q"
831     #define STR_r "r"
832     #define STR_s "s"
833     #define STR_t "t"
834     #define STR_u "u"
835     #define STR_v "v"
836     #define STR_w "w"
837     #define STR_x "x"
838     #define STR_y "y"
839     #define STR_z "z"
840     #define STR_LEFT_CURLY_BRACKET "{"
841     #define STR_VERTICAL_LINE "|"
842     #define STR_RIGHT_CURLY_BRACKET "}"
843     #define STR_TILDE "~"
844    
845     #define STRING_ACCEPT0 "ACCEPT\0"
846     #define STRING_COMMIT0 "COMMIT\0"
847     #define STRING_F0 "F\0"
848     #define STRING_FAIL0 "FAIL\0"
849     #define STRING_PRUNE0 "PRUNE\0"
850     #define STRING_SKIP0 "SKIP\0"
851     #define STRING_THEN "THEN"
852    
853     #define STRING_alpha0 "alpha\0"
854     #define STRING_lower0 "lower\0"
855     #define STRING_upper0 "upper\0"
856     #define STRING_alnum0 "alnum\0"
857     #define STRING_ascii0 "ascii\0"
858     #define STRING_blank0 "blank\0"
859     #define STRING_cntrl0 "cntrl\0"
860     #define STRING_digit0 "digit\0"
861     #define STRING_graph0 "graph\0"
862     #define STRING_print0 "print\0"
863     #define STRING_punct0 "punct\0"
864     #define STRING_space0 "space\0"
865     #define STRING_word0 "word\0"
866     #define STRING_xdigit "xdigit"
867    
868     #define STRING_DEFINE "DEFINE"
869    
870     #define STRING_CR_RIGHTPAR "CR)"
871     #define STRING_LF_RIGHTPAR "LF)"
872     #define STRING_CRLF_RIGHTPAR "CRLF)"
873     #define STRING_ANY_RIGHTPAR "ANY)"
874     #define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
875     #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
876     #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
877    
878     #else /* SUPPORT_UTF8 */
879    
880     /* UTF-8 support is enabled; always use UTF-8 (=ASCII) character codes. This
881     works in both modes non-EBCDIC platforms, and on EBCDIC platforms in UTF-8 mode
882     only. */
883    
884     #define CHAR_HT '\011'
885     #define CHAR_VT '\013'
886     #define CHAR_FF '\014'
887     #define CHAR_CR '\015'
888     #define CHAR_NL '\012'
889     #define CHAR_BS '\010'
890     #define CHAR_BEL '\007'
891     #define CHAR_ESC '\033'
892     #define CHAR_DEL '\177'
893    
894     #define CHAR_SPACE '\040'
895     #define CHAR_EXCLAMATION_MARK '\041'
896     #define CHAR_QUOTATION_MARK '\042'
897     #define CHAR_NUMBER_SIGN '\043'
898     #define CHAR_DOLLAR_SIGN '\044'
899     #define CHAR_PERCENT_SIGN '\045'
900     #define CHAR_AMPERSAND '\046'
901     #define CHAR_APOSTROPHE '\047'
902     #define CHAR_LEFT_PARENTHESIS '\050'
903     #define CHAR_RIGHT_PARENTHESIS '\051'
904     #define CHAR_ASTERISK '\052'
905     #define CHAR_PLUS '\053'
906     #define CHAR_COMMA '\054'
907     #define CHAR_MINUS '\055'
908     #define CHAR_DOT '\056'
909     #define CHAR_SLASH '\057'
910     #define CHAR_0 '\060'
911     #define CHAR_1 '\061'
912     #define CHAR_2 '\062'
913     #define CHAR_3 '\063'
914     #define CHAR_4 '\064'
915     #define CHAR_5 '\065'
916     #define CHAR_6 '\066'
917     #define CHAR_7 '\067'
918     #define CHAR_8 '\070'
919     #define CHAR_9 '\071'
920     #define CHAR_COLON '\072'
921     #define CHAR_SEMICOLON '\073'
922     #define CHAR_LESS_THAN_SIGN '\074'
923     #define CHAR_EQUALS_SIGN '\075'
924     #define CHAR_GREATER_THAN_SIGN '\076'
925     #define CHAR_QUESTION_MARK '\077'
926     #define CHAR_COMMERCIAL_AT '\100'
927     #define CHAR_A '\101'
928     #define CHAR_B '\102'
929     #define CHAR_C '\103'
930     #define CHAR_D '\104'
931     #define CHAR_E '\105'
932     #define CHAR_F '\106'
933     #define CHAR_G '\107'
934     #define CHAR_H '\110'
935     #define CHAR_I '\111'
936     #define CHAR_J '\112'
937     #define CHAR_K '\113'
938     #define CHAR_L '\114'
939     #define CHAR_M '\115'
940     #define CHAR_N '\116'
941     #define CHAR_O '\117'
942     #define CHAR_P '\120'
943     #define CHAR_Q '\121'
944     #define CHAR_R '\122'
945     #define CHAR_S '\123'
946     #define CHAR_T '\124'
947     #define CHAR_U '\125'
948     #define CHAR_V '\126'
949     #define CHAR_W '\127'
950     #define CHAR_X '\130'
951     #define CHAR_Y '\131'
952     #define CHAR_Z '\132'
953     #define CHAR_LEFT_SQUARE_BRACKET '\133'
954     #define CHAR_BACKSLASH '\134'
955     #define CHAR_RIGHT_SQUARE_BRACKET '\135'
956     #define CHAR_CIRCUMFLEX_ACCENT '\136'
957     #define CHAR_UNDERSCORE '\137'
958     #define CHAR_GRAVE_ACCENT '\140'
959     #define CHAR_a '\141'
960     #define CHAR_b '\142'
961     #define CHAR_c '\143'
962     #define CHAR_d '\144'
963     #define CHAR_e '\145'
964     #define CHAR_f '\146'
965     #define CHAR_g '\147'
966     #define CHAR_h '\150'
967     #define CHAR_i '\151'
968     #define CHAR_j '\152'
969     #define CHAR_k '\153'
970     #define CHAR_l '\154'
971     #define CHAR_m '\155'
972     #define CHAR_n '\156'
973     #define CHAR_o '\157'
974     #define CHAR_p '\160'
975     #define CHAR_q '\161'
976     #define CHAR_r '\162'
977     #define CHAR_s '\163'
978     #define CHAR_t '\164'
979     #define CHAR_u '\165'
980     #define CHAR_v '\166'
981     #define CHAR_w '\167'
982     #define CHAR_x '\170'
983     #define CHAR_y '\171'
984     #define CHAR_z '\172'
985     #define CHAR_LEFT_CURLY_BRACKET '\173'
986     #define CHAR_VERTICAL_LINE '\174'
987     #define CHAR_RIGHT_CURLY_BRACKET '\175'
988     #define CHAR_TILDE '\176'
989    
990     #define STR_HT "\011"
991     #define STR_VT "\013"
992     #define STR_FF "\014"
993     #define STR_CR "\015"
994     #define STR_NL "\012"
995     #define STR_BS "\010"
996     #define STR_BEL "\007"
997     #define STR_ESC "\033"
998     #define STR_DEL "\177"
999    
1000     #define STR_SPACE "\040"
1001     #define STR_EXCLAMATION_MARK "\041"
1002     #define STR_QUOTATION_MARK "\042"
1003     #define STR_NUMBER_SIGN "\043"
1004     #define STR_DOLLAR_SIGN "\044"
1005     #define STR_PERCENT_SIGN "\045"
1006     #define STR_AMPERSAND "\046"
1007     #define STR_APOSTROPHE "\047"
1008     #define STR_LEFT_PARENTHESIS "\050"
1009     #define STR_RIGHT_PARENTHESIS "\051"
1010     #define STR_ASTERISK "\052"
1011     #define STR_PLUS "\053"
1012     #define STR_COMMA "\054"
1013     #define STR_MINUS "\055"
1014     #define STR_DOT "\056"
1015     #define STR_SLASH "\057"
1016     #define STR_0 "\060"
1017     #define STR_1 "\061"
1018     #define STR_2 "\062"
1019     #define STR_3 "\063"
1020     #define STR_4 "\064"
1021     #define STR_5 "\065"
1022     #define STR_6 "\066"
1023     #define STR_7 "\067"
1024     #define STR_8 "\070"
1025     #define STR_9 "\071"
1026     #define STR_COLON "\072"
1027     #define STR_SEMICOLON "\073"
1028     #define STR_LESS_THAN_SIGN "\074"
1029     #define STR_EQUALS_SIGN "\075"
1030     #define STR_GREATER_THAN_SIGN "\076"
1031     #define STR_QUESTION_MARK "\077"
1032     #define STR_COMMERCIAL_AT "\100"
1033     #define STR_A "\101"
1034     #define STR_B "\102"
1035     #define STR_C "\103"
1036     #define STR_D "\104"
1037     #define STR_E "\105"
1038     #define STR_F "\106"
1039     #define STR_G "\107"
1040     #define STR_H "\110"
1041     #define STR_I "\111"
1042     #define STR_J "\112"
1043     #define STR_K "\113"
1044     #define STR_L "\114"
1045     #define STR_M "\115"
1046     #define STR_N "\116"
1047     #define STR_O "\117"
1048     #define STR_P "\120"
1049     #define STR_Q "\121"
1050     #define STR_R "\122"
1051     #define STR_S "\123"
1052     #define STR_T "\124"
1053     #define STR_U "\125"
1054     #define STR_V "\126"
1055     #define STR_W "\127"
1056     #define STR_X "\130"
1057     #define STR_Y "\131"
1058     #define STR_Z "\132"
1059     #define STR_LEFT_SQUARE_BRACKET "\133"
1060     #define STR_BACKSLASH "\134"
1061     #define STR_RIGHT_SQUARE_BRACKET "\135"
1062     #define STR_CIRCUMFLEX_ACCENT "\136"
1063     #define STR_UNDERSCORE "\137"
1064     #define STR_GRAVE_ACCENT "\140"
1065     #define STR_a "\141"
1066     #define STR_b "\142"
1067     #define STR_c "\143"
1068     #define STR_d "\144"
1069     #define STR_e "\145"
1070     #define STR_f "\146"
1071     #define STR_g "\147"
1072     #define STR_h "\150"
1073     #define STR_i "\151"
1074     #define STR_j "\152"
1075     #define STR_k "\153"
1076     #define STR_l "\154"
1077     #define STR_m "\155"
1078     #define STR_n "\156"
1079     #define STR_o "\157"
1080     #define STR_p "\160"
1081     #define STR_q "\161"
1082     #define STR_r "\162"
1083     #define STR_s "\163"
1084     #define STR_t "\164"
1085     #define STR_u "\165"
1086     #define STR_v "\166"
1087     #define STR_w "\167"
1088     #define STR_x "\170"
1089     #define STR_y "\171"
1090     #define STR_z "\172"
1091     #define STR_LEFT_CURLY_BRACKET "\173"
1092     #define STR_VERTICAL_LINE "\174"
1093     #define STR_RIGHT_CURLY_BRACKET "\175"
1094     #define STR_TILDE "\176"
1095    
1096     #define STRING_ACCEPT0 STR_A STR_C STR_C STR_E STR_P STR_T "\0"
1097     #define STRING_COMMIT0 STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1098     #define STRING_F0 STR_F "\0"
1099     #define STRING_FAIL0 STR_F STR_A STR_I STR_L "\0"
1100     #define STRING_PRUNE0 STR_P STR_R STR_U STR_N STR_E "\0"
1101     #define STRING_SKIP0 STR_S STR_K STR_I STR_P "\0"
1102     #define STRING_THEN STR_T STR_H STR_E STR_N
1103    
1104     #define STRING_alpha0 STR_a STR_l STR_p STR_h STR_a "\0"
1105     #define STRING_lower0 STR_l STR_o STR_w STR_e STR_r "\0"
1106     #define STRING_upper0 STR_u STR_p STR_p STR_e STR_r "\0"
1107     #define STRING_alnum0 STR_a STR_l STR_n STR_u STR_m "\0"
1108     #define STRING_ascii0 STR_a STR_s STR_c STR_i STR_i "\0"
1109     #define STRING_blank0 STR_b STR_l STR_a STR_n STR_k "\0"
1110     #define STRING_cntrl0 STR_c STR_n STR_t STR_r STR_l "\0"
1111     #define STRING_digit0 STR_d STR_i STR_g STR_i STR_t "\0"
1112     #define STRING_graph0 STR_g STR_r STR_a STR_p STR_h "\0"
1113     #define STRING_print0 STR_p STR_r STR_i STR_n STR_t "\0"
1114     #define STRING_punct0 STR_p STR_u STR_n STR_c STR_t "\0"
1115     #define STRING_space0 STR_s STR_p STR_a STR_c STR_e "\0"
1116     #define STRING_word0 STR_w STR_o STR_r STR_d "\0"
1117     #define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
1118    
1119     #define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
1120    
1121     #define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
1122     #define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
1123     #define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1124     #define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
1125     #define STRING_ANYCRLF_RIGHTPAR STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1126     #define STRING_BSR_ANYCRLF_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1127     #define STRING_BSR_UNICODE_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS
1128    
1129     #endif /* SUPPORT_UTF8 */
1130    
1131 nigel 93 /* Escape items that are just an encoding of a particular data value. */
1132 nigel 77
1133     #ifndef ESC_e
1134 ph10 391 #define ESC_e CHAR_ESC
1135 nigel 77 #endif
1136    
1137     #ifndef ESC_f
1138 ph10 391 #define ESC_f CHAR_FF
1139 nigel 77 #endif
1140    
1141     #ifndef ESC_n
1142 ph10 391 #define ESC_n CHAR_NL
1143 nigel 77 #endif
1144    
1145     #ifndef ESC_r
1146 ph10 391 #define ESC_r CHAR_CR
1147 nigel 77 #endif
1148    
1149     /* We can't officially use ESC_t because it is a POSIX reserved identifier
1150     (presumably because of all the others like size_t). */
1151    
1152     #ifndef ESC_tee
1153 ph10 391 #define ESC_tee CHAR_HT
1154 nigel 77 #endif
1155    
1156 nigel 87 /* Codes for different types of Unicode property */
1157    
1158     #define PT_ANY 0 /* Any property - matches all chars */
1159     #define PT_LAMP 1 /* L& - the union of Lu, Ll, Lt */
1160     #define PT_GC 2 /* General characteristic (e.g. L) */
1161     #define PT_PC 3 /* Particular characteristic (e.g. Lu) */
1162     #define PT_SC 4 /* Script (e.g. Han) */
1163    
1164     /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1165     contain UTF-8 characters with values greater than 255. */
1166    
1167     #define XCL_NOT 0x01 /* Flag: this is a negative class */
1168     #define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
1169    
1170     #define XCL_END 0 /* Marks end of individual items */
1171     #define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
1172     #define XCL_RANGE 2 /* A range (two multibyte chars) follows */
1173     #define XCL_PROP 3 /* Unicode property (2-byte property code follows) */
1174     #define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
1175    
1176 nigel 77 /* These are escaped items that aren't just an encoding of a particular data
1177     value such as \n. They must have non-zero values, as check_escape() returns
1178     their negation. Also, they must appear in the same order as in the opcode
1179     definitions below, up to ESC_z. There's a dummy for OP_ANY because it
1180 ph10 345 corresponds to "." rather than an escape sequence, and another for OP_ALLANY
1181 ph10 341 (which is used for [^] in JavaScript compatibility mode).
1182 nigel 77
1183 ph10 341 The final escape must be ESC_REF as subsequent values are used for
1184     backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
1185     greater than ESC_b and less than ESC_Z to detect the types that may be
1186     repeated. These are the types that consume characters. If any new escapes are
1187     put in between that don't consume a character, that code will have to change.
1188     */
1189    
1190 ph10 172 enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1191 ph10 345 ESC_W, ESC_w, ESC_dum1, ESC_dum2, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1192     ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_g, ESC_k,
1193 ph10 341 ESC_REF };
1194 nigel 77
1195 nigel 93
1196 ph10 210 /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1197 nigel 77 OP_EOD must correspond in order to the list of escapes immediately above.
1198    
1199 nigel 93 *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1200     that follow must also be updated to match. There is also a table called
1201     "coptable" in pcre_dfa_exec.c that must be updated. */
1202    
1203 nigel 77 enum {
1204     OP_END, /* 0 End of pattern */
1205    
1206     /* Values corresponding to backslashed metacharacters */
1207    
1208     OP_SOD, /* 1 Start of data: \A */
1209     OP_SOM, /* 2 Start of match (subject + offset): \G */
1210 ph10 172 OP_SET_SOM, /* 3 Set start of match (\K) */
1211 ph10 168 OP_NOT_WORD_BOUNDARY, /* 4 \B */
1212     OP_WORD_BOUNDARY, /* 5 \b */
1213     OP_NOT_DIGIT, /* 6 \D */
1214     OP_DIGIT, /* 7 \d */
1215     OP_NOT_WHITESPACE, /* 8 \S */
1216     OP_WHITESPACE, /* 9 \s */
1217     OP_NOT_WORDCHAR, /* 10 \W */
1218     OP_WORDCHAR, /* 11 \w */
1219 ph10 341 OP_ANY, /* 12 Match any character (subject to DOTALL) */
1220     OP_ALLANY, /* 13 Match any character (not subject to DOTALL) */
1221     OP_ANYBYTE, /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1222     OP_NOTPROP, /* 15 \P (not Unicode property) */
1223     OP_PROP, /* 16 \p (Unicode property) */
1224     OP_ANYNL, /* 17 \R (any newline sequence) */
1225     OP_NOT_HSPACE, /* 18 \H (not horizontal whitespace) */
1226     OP_HSPACE, /* 19 \h (horizontal whitespace) */
1227     OP_NOT_VSPACE, /* 20 \V (not vertical whitespace) */
1228     OP_VSPACE, /* 21 \v (vertical whitespace) */
1229     OP_EXTUNI, /* 22 \X (extended Unicode sequence */
1230     OP_EODN, /* 23 End of data or \n at end of data: \Z. */
1231     OP_EOD, /* 24 End of data: \z */
1232 nigel 77
1233 ph10 341 OP_OPT, /* 25 Set runtime options */
1234     OP_CIRC, /* 26 Start of line - varies with multiline switch */
1235     OP_DOLL, /* 27 End of line - varies with multiline switch */
1236     OP_CHAR, /* 28 Match one character, casefully */
1237     OP_CHARNC, /* 29 Match one character, caselessly */
1238     OP_NOT, /* 30 Match one character, not the following one */
1239 nigel 77
1240 ph10 341 OP_STAR, /* 31 The maximizing and minimizing versions of */
1241     OP_MINSTAR, /* 32 these six opcodes must come in pairs, with */
1242     OP_PLUS, /* 33 the minimizing one second. */
1243     OP_MINPLUS, /* 34 This first set applies to single characters.*/
1244     OP_QUERY, /* 35 */
1245     OP_MINQUERY, /* 36 */
1246 nigel 77
1247 ph10 341 OP_UPTO, /* 37 From 0 to n matches */
1248     OP_MINUPTO, /* 38 */
1249     OP_EXACT, /* 39 Exactly n matches */
1250 nigel 77
1251 ph10 341 OP_POSSTAR, /* 40 Possessified star */
1252     OP_POSPLUS, /* 41 Possessified plus */
1253     OP_POSQUERY, /* 42 Posesssified query */
1254     OP_POSUPTO, /* 43 Possessified upto */
1255 nigel 77
1256 ph10 341 OP_NOTSTAR, /* 44 The maximizing and minimizing versions of */
1257     OP_NOTMINSTAR, /* 45 these six opcodes must come in pairs, with */
1258     OP_NOTPLUS, /* 46 the minimizing one second. They must be in */
1259     OP_NOTMINPLUS, /* 47 exactly the same order as those above. */
1260     OP_NOTQUERY, /* 48 This set applies to "not" single characters. */
1261     OP_NOTMINQUERY, /* 49 */
1262 nigel 77
1263 ph10 341 OP_NOTUPTO, /* 50 From 0 to n matches */
1264     OP_NOTMINUPTO, /* 51 */
1265     OP_NOTEXACT, /* 52 Exactly n matches */
1266 nigel 93
1267 ph10 341 OP_NOTPOSSTAR, /* 53 Possessified versions */
1268     OP_NOTPOSPLUS, /* 54 */
1269     OP_NOTPOSQUERY, /* 55 */
1270     OP_NOTPOSUPTO, /* 56 */
1271 nigel 93
1272 ph10 341 OP_TYPESTAR, /* 57 The maximizing and minimizing versions of */
1273     OP_TYPEMINSTAR, /* 58 these six opcodes must come in pairs, with */
1274     OP_TYPEPLUS, /* 59 the minimizing one second. These codes must */
1275     OP_TYPEMINPLUS, /* 60 be in exactly the same order as those above. */
1276     OP_TYPEQUERY, /* 61 This set applies to character types such as \d */
1277     OP_TYPEMINQUERY, /* 62 */
1278 nigel 93
1279 ph10 341 OP_TYPEUPTO, /* 63 From 0 to n matches */
1280     OP_TYPEMINUPTO, /* 64 */
1281     OP_TYPEEXACT, /* 65 Exactly n matches */
1282 nigel 93
1283 ph10 341 OP_TYPEPOSSTAR, /* 66 Possessified versions */
1284     OP_TYPEPOSPLUS, /* 67 */
1285     OP_TYPEPOSQUERY, /* 68 */
1286     OP_TYPEPOSUPTO, /* 69 */
1287 nigel 93
1288 ph10 341 OP_CRSTAR, /* 70 The maximizing and minimizing versions of */
1289     OP_CRMINSTAR, /* 71 all these opcodes must come in pairs, with */
1290     OP_CRPLUS, /* 72 the minimizing one second. These codes must */
1291     OP_CRMINPLUS, /* 73 be in exactly the same order as those above. */
1292     OP_CRQUERY, /* 74 These are for character classes and back refs */
1293     OP_CRMINQUERY, /* 75 */
1294     OP_CRRANGE, /* 76 These are different to the three sets above. */
1295     OP_CRMINRANGE, /* 77 */
1296 nigel 93
1297 ph10 341 OP_CLASS, /* 78 Match a character class, chars < 256 only */
1298     OP_NCLASS, /* 79 Same, but the bitmap was created from a negative
1299 nigel 77 class - the difference is relevant only when a UTF-8
1300     character > 255 is encountered. */
1301    
1302 ph10 341 OP_XCLASS, /* 80 Extended class for handling UTF-8 chars within the
1303 nigel 77 class. This does both positive and negative. */
1304    
1305 ph10 341 OP_REF, /* 81 Match a back reference */
1306     OP_RECURSE, /* 82 Match a numbered subpattern (possibly recursive) */
1307     OP_CALLOUT, /* 83 Call out to external function if provided */
1308 nigel 77
1309 ph10 341 OP_ALT, /* 84 Start of alternation */
1310     OP_KET, /* 85 End of group that doesn't have an unbounded repeat */
1311     OP_KETRMAX, /* 86 These two must remain together and in this */
1312     OP_KETRMIN, /* 87 order. They are for groups the repeat for ever. */
1313 nigel 77
1314 nigel 93 /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
1315 nigel 77
1316 ph10 341 OP_ASSERT, /* 88 Positive lookahead */
1317     OP_ASSERT_NOT, /* 89 Negative lookahead */
1318     OP_ASSERTBACK, /* 90 Positive lookbehind */
1319     OP_ASSERTBACK_NOT, /* 91 Negative lookbehind */
1320     OP_REVERSE, /* 92 Move pointer back - used in lookbehind assertions */
1321 nigel 77
1322 nigel 93 /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
1323     as there's a test for >= ONCE for a subpattern that isn't an assertion. */
1324 nigel 77
1325 ph10 341 OP_ONCE, /* 93 Atomic group */
1326     OP_BRA, /* 94 Start of non-capturing bracket */
1327     OP_CBRA, /* 95 Start of capturing bracket */
1328     OP_COND, /* 96 Conditional group */
1329 nigel 77
1330 nigel 93 /* These three must follow the previous three, in the same order. There's a
1331     check for >= SBRA to distinguish the two sets. */
1332 nigel 77
1333 ph10 341 OP_SBRA, /* 97 Start of non-capturing bracket, check empty */
1334     OP_SCBRA, /* 98 Start of capturing bracket, check empty */
1335     OP_SCOND, /* 99 Conditional group, check empty */
1336 nigel 77
1337 ph10 341 OP_CREF, /* 100 Used to hold a capture number as condition */
1338     OP_RREF, /* 101 Used to hold a recursion number as condition */
1339     OP_DEF, /* 102 The DEFINE condition */
1340 nigel 93
1341 ph10 341 OP_BRAZERO, /* 103 These two must remain together and in this */
1342     OP_BRAMINZERO, /* 104 order. */
1343 ph10 210
1344     /* These are backtracking control verbs */
1345    
1346 ph10 341 OP_PRUNE, /* 105 */
1347     OP_SKIP, /* 106 */
1348     OP_THEN, /* 107 */
1349     OP_COMMIT, /* 108 */
1350 ph10 210
1351     /* These are forced failure and success verbs */
1352    
1353 ph10 341 OP_FAIL, /* 109 */
1354     OP_ACCEPT, /* 110 */
1355 ph10 345
1356 ph10 335 /* This is used to skip a subpattern with a {0} quantifier */
1357 ph10 345
1358 ph10 341 OP_SKIPZERO /* 111 */
1359 nigel 77 };
1360    
1361    
1362     /* This macro defines textual names for all the opcodes. These are used only
1363     for debugging. The macro is referenced only in pcre_printint.c. */
1364    
1365     #define OP_NAME_LIST \
1366 ph10 168 "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d", \
1367 ph10 341 "\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
1368 ph10 178 "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
1369     "extuni", "\\Z", "\\z", \
1370 nigel 77 "Opt", "^", "$", "char", "charnc", "not", \
1371     "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1372 nigel 93 "*+","++", "?+", "{", \
1373 nigel 77 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1374 nigel 93 "*+","++", "?+", "{", \
1375 nigel 77 "*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
1376 nigel 93 "*+","++", "?+", "{", \
1377 nigel 77 "*", "*?", "+", "+?", "?", "??", "{", "{", \
1378     "class", "nclass", "xclass", "Ref", "Recurse", "Callout", \
1379     "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not", \
1380 nigel 93 "AssertB", "AssertB not", "Reverse", \
1381 ph10 192 "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond", \
1382 ph10 210 "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero", \
1383 ph10 335 "*PRUNE", "*SKIP", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT", \
1384 ph10 345 "Skip zero"
1385 nigel 77
1386    
1387     /* This macro defines the length of fixed length operations in the compiled
1388     regex. The lengths are used when searching for specific things, and also in the
1389     debugging printing of a compiled regex. We use a macro so that it can be
1390     defined close to the definitions of the opcodes themselves.
1391    
1392     As things have been extended, some of these are no longer fixed lenths, but are
1393     minima instead. For example, the length of a single-character repeat may vary
1394     in UTF-8 mode. The code that uses this table must know about such things. */
1395    
1396     #define OP_LENGTHS \
1397     1, /* End */ \
1398 ph10 168 1, 1, 1, 1, 1, /* \A, \G, \K, \B, \b */ \
1399     1, 1, 1, 1, 1, 1, /* \D, \d, \S, \s, \W, \w */ \
1400 ph10 341 1, 1, 1, /* Any, AllAny, Anybyte */ \
1401 ph10 178 3, 3, 1, /* NOTPROP, PROP, EXTUNI */ \
1402     1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1403 nigel 77 1, 1, 2, 1, 1, /* \Z, \z, Opt, ^, $ */ \
1404     2, /* Char - the minimum length */ \
1405     2, /* Charnc - the minimum length */ \
1406     2, /* not */ \
1407     /* Positive single-char repeats ** These are */ \
1408     2, 2, 2, 2, 2, 2, /* *, *?, +, +?, ?, ?? ** minima in */ \
1409     4, 4, 4, /* upto, minupto, exact ** UTF-8 mode */ \
1410 nigel 93 2, 2, 2, 4, /* *+, ++, ?+, upto+ */ \
1411 nigel 77 /* Negative single-char repeats - only for chars < 256 */ \
1412     2, 2, 2, 2, 2, 2, /* NOT *, *?, +, +?, ?, ?? */ \
1413     4, 4, 4, /* NOT upto, minupto, exact */ \
1414 nigel 93 2, 2, 2, 4, /* Possessive *, +, ?, upto */ \
1415 nigel 77 /* Positive type repeats */ \
1416     2, 2, 2, 2, 2, 2, /* Type *, *?, +, +?, ?, ?? */ \
1417     4, 4, 4, /* Type upto, minupto, exact */ \
1418 nigel 93 2, 2, 2, 4, /* Possessive *+, ++, ?+, upto+ */ \
1419 nigel 77 /* Character class & ref repeats */ \
1420     1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1421     5, 5, /* CRRANGE, CRMINRANGE */ \
1422     33, /* CLASS */ \
1423     33, /* NCLASS */ \
1424     0, /* XCLASS - variable length */ \
1425     3, /* REF */ \
1426     1+LINK_SIZE, /* RECURSE */ \
1427     2+2*LINK_SIZE, /* CALLOUT */ \
1428     1+LINK_SIZE, /* Alt */ \
1429     1+LINK_SIZE, /* Ket */ \
1430     1+LINK_SIZE, /* KetRmax */ \
1431     1+LINK_SIZE, /* KetRmin */ \
1432     1+LINK_SIZE, /* Assert */ \
1433     1+LINK_SIZE, /* Assert not */ \
1434     1+LINK_SIZE, /* Assert behind */ \
1435     1+LINK_SIZE, /* Assert behind not */ \
1436     1+LINK_SIZE, /* Reverse */ \
1437 nigel 93 1+LINK_SIZE, /* ONCE */ \
1438     1+LINK_SIZE, /* BRA */ \
1439     3+LINK_SIZE, /* CBRA */ \
1440 nigel 77 1+LINK_SIZE, /* COND */ \
1441 nigel 93 1+LINK_SIZE, /* SBRA */ \
1442     3+LINK_SIZE, /* SCBRA */ \
1443     1+LINK_SIZE, /* SCOND */ \
1444 nigel 77 3, /* CREF */ \
1445 nigel 93 3, /* RREF */ \
1446     1, /* DEF */ \
1447 nigel 77 1, 1, /* BRAZERO, BRAMINZERO */ \
1448 ph10 210 1, 1, 1, 1, /* PRUNE, SKIP, THEN, COMMIT, */ \
1449 ph10 335 1, 1, 1 /* FAIL, ACCEPT, SKIPZERO */
1450 nigel 77
1451    
1452 nigel 93 /* A magic value for OP_RREF to indicate the "any recursion" condition. */
1453 nigel 77
1454 nigel 93 #define RREF_ANY 0xffff
1455 nigel 77
1456     /* Error code numbers. They are given names so that they can more easily be
1457     tracked. */
1458    
1459     enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
1460     ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
1461     ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
1462     ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1463 nigel 91 ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1464 ph10 210 ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1465 ph10 336 ERR60, ERR61, ERR62, ERR63, ERR64 };
1466 nigel 77
1467     /* The real format of the start of the pcre block; the index of names and the
1468     code vector run on as long as necessary after the end. We store an explicit
1469     offset to the name table so that if a regex is compiled on one host, saved, and
1470     then run on another where the size of pointers is different, all might still
1471     be well. For the case of compiled-on-4 and run-on-8, we include an extra
1472     pointer that is always NULL. For future-proofing, a few dummy fields were
1473     originally included - even though you can never get this planning right - but
1474     there is only one left now.
1475    
1476     NOTE NOTE NOTE:
1477     Because people can now save and re-use compiled patterns, any additions to this
1478     structure should be made at the end, and something earlier (e.g. a new
1479     flag in the options or one of the dummy fields) should indicate that the new
1480     fields are present. Currently PCRE always sets the dummy fields to zero.
1481     NOTE NOTE NOTE:
1482     */
1483    
1484     typedef struct real_pcre {
1485     pcre_uint32 magic_number;
1486     pcre_uint32 size; /* Total that was malloced */
1487 ph10 230 pcre_uint32 options; /* Public options */
1488     pcre_uint16 flags; /* Private flags */
1489     pcre_uint16 dummy1; /* For future use */
1490 nigel 77 pcre_uint16 top_bracket;
1491     pcre_uint16 top_backref;
1492     pcre_uint16 first_byte;
1493     pcre_uint16 req_byte;
1494     pcre_uint16 name_table_offset; /* Offset to name table that follows */
1495     pcre_uint16 name_entry_size; /* Size of any name items */
1496     pcre_uint16 name_count; /* Number of name items */
1497     pcre_uint16 ref_count; /* Reference count */
1498    
1499     const unsigned char *tables; /* Pointer to tables or NULL for std */
1500     const unsigned char *nullpad; /* NULL padding */
1501     } real_pcre;
1502    
1503     /* The format of the block used to store data from pcre_study(). The same
1504     remark (see NOTE above) about extending this structure applies. */
1505    
1506     typedef struct pcre_study_data {
1507     pcre_uint32 size; /* Total that was malloced */
1508     pcre_uint32 options;
1509     uschar start_bits[32];
1510     } pcre_study_data;
1511    
1512     /* Structure for passing "static" information around between the functions
1513     doing the compiling, so that they are thread-safe. */
1514    
1515     typedef struct compile_data {
1516     const uschar *lcc; /* Points to lower casing table */
1517     const uschar *fcc; /* Points to case-flipping table */
1518     const uschar *cbits; /* Points to character type table */
1519     const uschar *ctypes; /* Points to table of type maps */
1520 nigel 93 const uschar *start_workspace;/* The start of working space */
1521 nigel 77 const uschar *start_code; /* The start of the compiled code */
1522     const uschar *start_pattern; /* The start of the pattern */
1523 nigel 93 const uschar *end_pattern; /* The end of the pattern */
1524     uschar *hwm; /* High watermark of workspace */
1525 nigel 77 uschar *name_table; /* The name/number table */
1526     int names_found; /* Number of entries so far */
1527     int name_entry_size; /* Size of each entry */
1528 ph10 270 int bracount; /* Count of capturing parens as we compile */
1529 ph10 286 int final_bracount; /* Saved value after first pass */
1530 nigel 77 int top_backref; /* Maximum back reference */
1531     unsigned int backref_map; /* Bitmap of low back refs */
1532 nigel 93 int external_options; /* External (initial) options */
1533 ph10 231 int external_flags; /* External flag bits to be set */
1534 nigel 77 int req_varyopt; /* "After variable item" flag for reqbyte */
1535 ph10 211 BOOL had_accept; /* (*ACCEPT) encountered */
1536 nigel 93 int nltype; /* Newline type */
1537     int nllen; /* Newline string length */
1538     uschar nl[4]; /* Newline string when fixed length */
1539 nigel 77 } compile_data;
1540    
1541     /* Structure for maintaining a chain of pointers to the currently incomplete
1542     branches, for testing for left recursion. */
1543    
1544     typedef struct branch_chain {
1545     struct branch_chain *outer;
1546     uschar *current;
1547     } branch_chain;
1548    
1549     /* Structure for items in a linked list that represents an explicit recursive
1550     call within the pattern. */
1551    
1552     typedef struct recursion_info {
1553     struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
1554     int group_num; /* Number of group that was called */
1555     const uschar *after_call; /* "Return value": points after the call in the expr */
1556 ph10 168 USPTR save_start; /* Old value of mstart */
1557 nigel 77 int *offset_save; /* Pointer to start of saved offsets */
1558     int saved_max; /* Number of saved offsets */
1559     } recursion_info;
1560    
1561 nigel 93 /* Structure for building a chain of data for holding the values of the subject
1562     pointer at the start of each subpattern, so as to detect when an empty string
1563     has been matched by a subpattern - to break infinite loops. */
1564    
1565     typedef struct eptrblock {
1566     struct eptrblock *epb_prev;
1567     USPTR epb_saved_eptr;
1568     } eptrblock;
1569    
1570    
1571 nigel 77 /* Structure for passing "static" information around between the functions
1572     doing traditional NFA matching, so that they are thread-safe. */
1573    
1574     typedef struct match_data {
1575 nigel 87 unsigned long int match_call_count; /* As it says */
1576     unsigned long int match_limit; /* As it says */
1577     unsigned long int match_limit_recursion; /* As it says */
1578 nigel 77 int *offset_vector; /* Offset vector */
1579     int offset_end; /* One past the end */
1580     int offset_max; /* The maximum usable for return data */
1581 nigel 93 int nltype; /* Newline type */
1582     int nllen; /* Newline string length */
1583     uschar nl[4]; /* Newline string when fixed */
1584 nigel 77 const uschar *lcc; /* Points to lower casing table */
1585     const uschar *ctypes; /* Points to table of type maps */
1586     BOOL offset_overflow; /* Set if too many extractions */
1587     BOOL notbol; /* NOTBOL flag */
1588     BOOL noteol; /* NOTEOL flag */
1589     BOOL utf8; /* UTF8 flag */
1590 ph10 345 BOOL jscript_compat; /* JAVASCRIPT_COMPAT flag */
1591 nigel 77 BOOL endonly; /* Dollar not before final \n */
1592     BOOL notempty; /* Empty string match not wanted */
1593     BOOL partial; /* PARTIAL flag */
1594     BOOL hitend; /* Hit the end of the subject at some point */
1595 ph10 231 BOOL bsr_anycrlf; /* \R is just any CRLF, not full Unicode */
1596 nigel 77 const uschar *start_code; /* For use when recursing */
1597 nigel 87 USPTR start_subject; /* Start of the subject string */
1598     USPTR end_subject; /* End of the subject string */
1599 ph10 168 USPTR start_match_ptr; /* Start of matched string */
1600 nigel 87 USPTR end_match_ptr; /* Subject position at end match */
1601 nigel 77 int end_offset_top; /* Highwater mark at end of match */
1602     int capture_last; /* Most recent capture number */
1603     int start_offset; /* The start offset value */
1604 nigel 93 eptrblock *eptrchain; /* Chain of eptrblocks for tail recursions */
1605     int eptrn; /* Next free eptrblock */
1606 nigel 77 recursion_info *recursive; /* Linked list of recursion data */
1607     void *callout_data; /* To pass back to callouts */
1608     } match_data;
1609    
1610     /* A similar structure is used for the same purpose by the DFA matching
1611     functions. */
1612    
1613     typedef struct dfa_match_data {
1614     const uschar *start_code; /* Start of the compiled pattern */
1615     const uschar *start_subject; /* Start of the subject string */
1616     const uschar *end_subject; /* End of subject string */
1617     const uschar *tables; /* Character tables */
1618     int moptions; /* Match options */
1619     int poptions; /* Pattern options */
1620 nigel 93 int nltype; /* Newline type */
1621     int nllen; /* Newline string length */
1622     uschar nl[4]; /* Newline string when fixed */
1623 nigel 77 void *callout_data; /* To pass back to callouts */
1624     } dfa_match_data;
1625    
1626     /* Bit definitions for entries in the pcre_ctypes table. */
1627    
1628     #define ctype_space 0x01
1629     #define ctype_letter 0x02
1630     #define ctype_digit 0x04
1631     #define ctype_xdigit 0x08
1632 ph10 274 #define ctype_word 0x10 /* alphanumeric or '_' */
1633 nigel 77 #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
1634    
1635     /* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
1636     of bits for a class map. Some classes are built by combining these tables. */
1637    
1638     #define cbit_space 0 /* [:space:] or \s */
1639     #define cbit_xdigit 32 /* [:xdigit:] */
1640     #define cbit_digit 64 /* [:digit:] or \d */
1641     #define cbit_upper 96 /* [:upper:] */
1642     #define cbit_lower 128 /* [:lower:] */
1643     #define cbit_word 160 /* [:word:] or \w */
1644     #define cbit_graph 192 /* [:graph:] */
1645     #define cbit_print 224 /* [:print:] */
1646     #define cbit_punct 256 /* [:punct:] */
1647     #define cbit_cntrl 288 /* [:cntrl:] */
1648     #define cbit_length 320 /* Length of the cbits table */
1649    
1650     /* Offsets of the various tables from the base tables pointer, and
1651     total length. */
1652    
1653     #define lcc_offset 0
1654     #define fcc_offset 256
1655     #define cbits_offset 512
1656     #define ctypes_offset (cbits_offset + cbit_length)
1657     #define tables_length (ctypes_offset + 256)
1658    
1659 nigel 87 /* Layout of the UCP type table that translates property names into types and
1660 ph10 240 codes. Each entry used to point directly to a name, but to reduce the number of
1661 ph10 243 relocations in shared libraries, it now has an offset into a single string
1662 ph10 240 instead. */
1663 nigel 77
1664     typedef struct {
1665 ph10 243 pcre_uint16 name_offset;
1666 nigel 87 pcre_uint16 type;
1667     pcre_uint16 value;
1668 nigel 77 } ucp_type_table;
1669    
1670    
1671     /* Internal shared data tables. These are tables that are used by more than one
1672     of the exported public functions. They have to be "external" in the C sense,
1673     but are not part of the PCRE public API. The data for these tables is in the
1674     pcre_tables.c module. */
1675    
1676     extern const int _pcre_utf8_table1[];
1677     extern const int _pcre_utf8_table2[];
1678     extern const int _pcre_utf8_table3[];
1679     extern const uschar _pcre_utf8_table4[];
1680    
1681     extern const int _pcre_utf8_table1_size;
1682    
1683 ph10 240 extern const char _pcre_utt_names[];
1684 nigel 77 extern const ucp_type_table _pcre_utt[];
1685     extern const int _pcre_utt_size;
1686    
1687     extern const uschar _pcre_default_tables[];
1688    
1689     extern const uschar _pcre_OP_lengths[];
1690    
1691    
1692     /* Internal shared functions. These are functions that are used by more than
1693     one of the exported public functions. They have to be "external" in the C
1694     sense, but are not part of the PCRE public API. */
1695    
1696 ph10 150 extern BOOL _pcre_is_newline(const uschar *, int, const uschar *,
1697 ph10 149 int *, BOOL);
1698 nigel 93 extern int _pcre_ord2utf8(int, uschar *);
1699     extern real_pcre *_pcre_try_flipped(const real_pcre *, real_pcre *,
1700     const pcre_study_data *, pcre_study_data *);
1701     extern int _pcre_valid_utf8(const uschar *, int);
1702 ph10 150 extern BOOL _pcre_was_newline(const uschar *, int, const uschar *,
1703 ph10 149 int *, BOOL);
1704 nigel 93 extern BOOL _pcre_xclass(int, const uschar *);
1705 nigel 77
1706 ph10 349
1707     /* Unicode character database (UCD) */
1708    
1709     typedef struct {
1710     uschar script;
1711     uschar chartype;
1712 ph10 351 pcre_int32 other_case;
1713 ph10 349 } ucd_record;
1714    
1715 ph10 351 extern const ucd_record _pcre_ucd_records[];
1716     extern const uschar _pcre_ucd_stage1[];
1717     extern const pcre_uint16 _pcre_ucd_stage2[];
1718     extern const int _pcre_ucp_gentype[];
1719 ph10 349
1720 ph10 351
1721 ph10 349 /* UCD access macros */
1722    
1723     #define UCD_BLOCK_SIZE 128
1724 ph10 351 #define GET_UCD(ch) (_pcre_ucd_records + \
1725     _pcre_ucd_stage2[_pcre_ucd_stage1[(ch) / UCD_BLOCK_SIZE] * \
1726 ph10 349 UCD_BLOCK_SIZE + ch % UCD_BLOCK_SIZE])
1727    
1728     #define UCD_CHARTYPE(ch) GET_UCD(ch)->chartype
1729     #define UCD_SCRIPT(ch) GET_UCD(ch)->script
1730 ph10 351 #define UCD_CATEGORY(ch) _pcre_ucp_gentype[UCD_CHARTYPE(ch)]
1731     #define UCD_OTHERCASE(ch) (ch + GET_UCD(ch)->other_case)
1732 ph10 349
1733 nigel 85 #endif
1734    
1735 nigel 77 /* 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