forked from php/php-src
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathpcre2_compile.c
10623 lines (8787 loc) · 345 KB
/
pcre2_compile.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Original API code Copyright (c) 1997-2012 University of Cambridge
New API code Copyright (c) 2016-2022 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define NLBLOCK cb /* Block containing newline information */
#define PSSTART start_pattern /* Field containing processed string start */
#define PSEND end_pattern /* Field containing processed string end */
#include "pcre2_internal.h"
/* In rare error cases debugging might require calling pcre2_printint(). */
#if 0
#ifdef EBCDIC
#define PRINTABLE(c) ((c) >= 64 && (c) < 255)
#else
#define PRINTABLE(c) ((c) >= 32 && (c) < 127)
#endif
#include "pcre2_printint.c"
#define DEBUG_CALL_PRINTINT
#endif
/* Other debugging code can be enabled by these defines. */
/* #define DEBUG_SHOW_CAPTURES */
/* #define DEBUG_SHOW_PARSED */
/* There are a few things that vary with different code unit sizes. Handle them
by defining macros in order to minimize #if usage. */
#if PCRE2_CODE_UNIT_WIDTH == 8
#define STRING_UTFn_RIGHTPAR STRING_UTF8_RIGHTPAR, 5
#define XDIGIT(c) xdigitab[c]
#else /* Either 16-bit or 32-bit */
#define XDIGIT(c) (MAX_255(c)? xdigitab[c] : 0xff)
#if PCRE2_CODE_UNIT_WIDTH == 16
#define STRING_UTFn_RIGHTPAR STRING_UTF16_RIGHTPAR, 6
#else /* 32-bit */
#define STRING_UTFn_RIGHTPAR STRING_UTF32_RIGHTPAR, 6
#endif
#endif
/* Macros to store and retrieve a PCRE2_SIZE value in the parsed pattern, which
consists of uint32_t elements. Assume that if uint32_t can't hold it, two of
them will be able to (i.e. assume a 64-bit world). */
#if PCRE2_SIZE_MAX <= UINT32_MAX
#define PUTOFFSET(s,p) *p++ = s
#define GETOFFSET(s,p) s = *p++
#define GETPLUSOFFSET(s,p) s = *(++p)
#define READPLUSOFFSET(s,p) s = p[1]
#define SKIPOFFSET(p) p++
#define SIZEOFFSET 1
#else
#define PUTOFFSET(s,p) \
{ *p++ = (uint32_t)(s >> 32); *p++ = (uint32_t)(s & 0xffffffff); }
#define GETOFFSET(s,p) \
{ s = ((PCRE2_SIZE)p[0] << 32) | (PCRE2_SIZE)p[1]; p += 2; }
#define GETPLUSOFFSET(s,p) \
{ s = ((PCRE2_SIZE)p[1] << 32) | (PCRE2_SIZE)p[2]; p += 2; }
#define READPLUSOFFSET(s,p) \
{ s = ((PCRE2_SIZE)p[1] << 32) | (PCRE2_SIZE)p[2]; }
#define SKIPOFFSET(p) p += 2
#define SIZEOFFSET 2
#endif
/* Macros for manipulating elements of the parsed pattern vector. */
#define META_CODE(x) (x & 0xffff0000u)
#define META_DATA(x) (x & 0x0000ffffu)
#define META_DIFF(x,y) ((x-y)>>16)
/* Function definitions to allow mutual recursion */
#ifdef SUPPORT_UNICODE
static unsigned int
add_list_to_class_internal(uint8_t *, PCRE2_UCHAR **, uint32_t,
compile_block *, const uint32_t *, unsigned int);
#endif
static int
compile_regex(uint32_t, PCRE2_UCHAR **, uint32_t **, int *, uint32_t,
uint32_t *, uint32_t *, uint32_t *, uint32_t *, branch_chain *,
compile_block *, PCRE2_SIZE *);
static int
get_branchlength(uint32_t **, int *, int *, parsed_recurse_check *,
compile_block *);
static BOOL
set_lookbehind_lengths(uint32_t **, int *, int *, parsed_recurse_check *,
compile_block *);
static int
check_lookbehinds(uint32_t *, uint32_t **, parsed_recurse_check *,
compile_block *, int *);
/*************************************************
* Code parameters and static tables *
*************************************************/
#define MAX_GROUP_NUMBER 65535u
#define MAX_REPEAT_COUNT 65535u
#define REPEAT_UNLIMITED (MAX_REPEAT_COUNT+1)
/* COMPILE_WORK_SIZE specifies the size of stack workspace, which is used in
different ways in the different pattern scans. The parsing and group-
identifying pre-scan uses it to handle nesting, and needs it to be 16-bit
aligned for this. Having defined the size in code units, we set up
C16_WORK_SIZE as the number of elements in the 16-bit vector.
During the first compiling phase, when determining how much memory is required,
the regex is partly compiled into this space, but the compiled parts are
discarded as soon as they can be, so that hopefully there will never be an
overrun. The code does, however, check for an overrun, which can occur for
pathological patterns. The size of the workspace depends on LINK_SIZE because
the length of compiled items varies with this.
In the real compile phase, this workspace is not currently used. */
#define COMPILE_WORK_SIZE (3000*LINK_SIZE) /* Size in code units */
#define C16_WORK_SIZE \
((COMPILE_WORK_SIZE * sizeof(PCRE2_UCHAR))/sizeof(uint16_t))
/* A uint32_t vector is used for caching information about the size of
capturing groups, to improve performance. A default is created on the stack of
this size. */
#define GROUPINFO_DEFAULT_SIZE 256
/* The overrun tests check for a slightly smaller size so that they detect the
overrun before it actually does run off the end of the data block. */
#define WORK_SIZE_SAFETY_MARGIN (100)
/* This value determines the size of the initial vector that is used for
remembering named groups during the pre-compile. It is allocated on the stack,
but if it is too small, it is expanded, in a similar way to the workspace. The
value is the number of slots in the list. */
#define NAMED_GROUP_LIST_SIZE 20
/* The pre-compiling pass over the pattern creates a parsed pattern in a vector
of uint32_t. For short patterns this lives on the stack, with this size. Heap
memory is used for longer patterns. */
#define PARSED_PATTERN_DEFAULT_SIZE 1024
/* Maximum length value to check against when making sure that the variable
that holds the compiled pattern length does not overflow. We make it a bit less
than INT_MAX to allow for adding in group terminating code units, so that we
don't have to check them every time. */
#define OFLOW_MAX (INT_MAX - 20)
/* Code values for parsed patterns, which are stored in a vector of 32-bit
unsigned ints. Values less than META_END are literal data values. The coding
for identifying the item is in the top 16-bits, leaving 16 bits for the
additional data that some of them need. The META_CODE, META_DATA, and META_DIFF
macros are used to manipulate parsed pattern elements.
NOTE: When these definitions are changed, the table of extra lengths for each
code (meta_extra_lengths, just below) must be updated to remain in step. */
#define META_END 0x80000000u /* End of pattern */
#define META_ALT 0x80010000u /* alternation */
#define META_ATOMIC 0x80020000u /* atomic group */
#define META_BACKREF 0x80030000u /* Back ref */
#define META_BACKREF_BYNAME 0x80040000u /* \k'name' */
#define META_BIGVALUE 0x80050000u /* Next is a literal > META_END */
#define META_CALLOUT_NUMBER 0x80060000u /* (?C with numerical argument */
#define META_CALLOUT_STRING 0x80070000u /* (?C with string argument */
#define META_CAPTURE 0x80080000u /* Capturing parenthesis */
#define META_CIRCUMFLEX 0x80090000u /* ^ metacharacter */
#define META_CLASS 0x800a0000u /* start non-empty class */
#define META_CLASS_EMPTY 0x800b0000u /* empty class */
#define META_CLASS_EMPTY_NOT 0x800c0000u /* negative empty class */
#define META_CLASS_END 0x800d0000u /* end of non-empty class */
#define META_CLASS_NOT 0x800e0000u /* start non-empty negative class */
#define META_COND_ASSERT 0x800f0000u /* (?(?assertion)... */
#define META_COND_DEFINE 0x80100000u /* (?(DEFINE)... */
#define META_COND_NAME 0x80110000u /* (?(<name>)... */
#define META_COND_NUMBER 0x80120000u /* (?(digits)... */
#define META_COND_RNAME 0x80130000u /* (?(R&name)... */
#define META_COND_RNUMBER 0x80140000u /* (?(Rdigits)... */
#define META_COND_VERSION 0x80150000u /* (?(VERSION<op>x.y)... */
#define META_DOLLAR 0x80160000u /* $ metacharacter */
#define META_DOT 0x80170000u /* . metacharacter */
#define META_ESCAPE 0x80180000u /* \d and friends */
#define META_KET 0x80190000u /* closing parenthesis */
#define META_NOCAPTURE 0x801a0000u /* no capture parens */
#define META_OPTIONS 0x801b0000u /* (?i) and friends */
#define META_POSIX 0x801c0000u /* POSIX class item */
#define META_POSIX_NEG 0x801d0000u /* negative POSIX class item */
#define META_RANGE_ESCAPED 0x801e0000u /* range with at least one escape */
#define META_RANGE_LITERAL 0x801f0000u /* range defined literally */
#define META_RECURSE 0x80200000u /* Recursion */
#define META_RECURSE_BYNAME 0x80210000u /* (?&name) */
#define META_SCRIPT_RUN 0x80220000u /* (*script_run:...) */
/* These must be kept together to make it easy to check that an assertion
is present where expected in a conditional group. */
#define META_LOOKAHEAD 0x80230000u /* (?= */
#define META_LOOKAHEADNOT 0x80240000u /* (?! */
#define META_LOOKBEHIND 0x80250000u /* (?<= */
#define META_LOOKBEHINDNOT 0x80260000u /* (?<! */
/* These cannot be conditions */
#define META_LOOKAHEAD_NA 0x80270000u /* (*napla: */
#define META_LOOKBEHIND_NA 0x80280000u /* (*naplb: */
/* These must be kept in this order, with consecutive values, and the _ARG
versions of COMMIT, PRUNE, SKIP, and THEN immediately after their non-argument
versions. */
#define META_MARK 0x80290000u /* (*MARK) */
#define META_ACCEPT 0x802a0000u /* (*ACCEPT) */
#define META_FAIL 0x802b0000u /* (*FAIL) */
#define META_COMMIT 0x802c0000u /* These */
#define META_COMMIT_ARG 0x802d0000u /* pairs */
#define META_PRUNE 0x802e0000u /* must */
#define META_PRUNE_ARG 0x802f0000u /* be */
#define META_SKIP 0x80300000u /* kept */
#define META_SKIP_ARG 0x80310000u /* in */
#define META_THEN 0x80320000u /* this */
#define META_THEN_ARG 0x80330000u /* order */
/* These must be kept in groups of adjacent 3 values, and all together. */
#define META_ASTERISK 0x80340000u /* * */
#define META_ASTERISK_PLUS 0x80350000u /* *+ */
#define META_ASTERISK_QUERY 0x80360000u /* *? */
#define META_PLUS 0x80370000u /* + */
#define META_PLUS_PLUS 0x80380000u /* ++ */
#define META_PLUS_QUERY 0x80390000u /* +? */
#define META_QUERY 0x803a0000u /* ? */
#define META_QUERY_PLUS 0x803b0000u /* ?+ */
#define META_QUERY_QUERY 0x803c0000u /* ?? */
#define META_MINMAX 0x803d0000u /* {n,m} repeat */
#define META_MINMAX_PLUS 0x803e0000u /* {n,m}+ repeat */
#define META_MINMAX_QUERY 0x803f0000u /* {n,m}? repeat */
#define META_FIRST_QUANTIFIER META_ASTERISK
#define META_LAST_QUANTIFIER META_MINMAX_QUERY
/* This is a special "meta code" that is used only to distinguish (*asr: from
(*sr: in the table of aphabetic assertions. It is never stored in the parsed
pattern because (*asr: is turned into (*sr:(*atomic: at that stage. There is
therefore no need for it to have a length entry, so use a high value. */
#define META_ATOMIC_SCRIPT_RUN 0x8fff0000u
/* Table of extra lengths for each of the meta codes. Must be kept in step with
the definitions above. For some items these values are a basic length to which
a variable amount has to be added. */
static unsigned char meta_extra_lengths[] = {
0, /* META_END */
0, /* META_ALT */
0, /* META_ATOMIC */
0, /* META_BACKREF - more if group is >= 10 */
1+SIZEOFFSET, /* META_BACKREF_BYNAME */
1, /* META_BIGVALUE */
3, /* META_CALLOUT_NUMBER */
3+SIZEOFFSET, /* META_CALLOUT_STRING */
0, /* META_CAPTURE */
0, /* META_CIRCUMFLEX */
0, /* META_CLASS */
0, /* META_CLASS_EMPTY */
0, /* META_CLASS_EMPTY_NOT */
0, /* META_CLASS_END */
0, /* META_CLASS_NOT */
0, /* META_COND_ASSERT */
SIZEOFFSET, /* META_COND_DEFINE */
1+SIZEOFFSET, /* META_COND_NAME */
1+SIZEOFFSET, /* META_COND_NUMBER */
1+SIZEOFFSET, /* META_COND_RNAME */
1+SIZEOFFSET, /* META_COND_RNUMBER */
3, /* META_COND_VERSION */
0, /* META_DOLLAR */
0, /* META_DOT */
0, /* META_ESCAPE - more for ESC_P, ESC_p, ESC_g, ESC_k */
0, /* META_KET */
0, /* META_NOCAPTURE */
1, /* META_OPTIONS */
1, /* META_POSIX */
1, /* META_POSIX_NEG */
0, /* META_RANGE_ESCAPED */
0, /* META_RANGE_LITERAL */
SIZEOFFSET, /* META_RECURSE */
1+SIZEOFFSET, /* META_RECURSE_BYNAME */
0, /* META_SCRIPT_RUN */
0, /* META_LOOKAHEAD */
0, /* META_LOOKAHEADNOT */
SIZEOFFSET, /* META_LOOKBEHIND */
SIZEOFFSET, /* META_LOOKBEHINDNOT */
0, /* META_LOOKAHEAD_NA */
SIZEOFFSET, /* META_LOOKBEHIND_NA */
1, /* META_MARK - plus the string length */
0, /* META_ACCEPT */
0, /* META_FAIL */
0, /* META_COMMIT */
1, /* META_COMMIT_ARG - plus the string length */
0, /* META_PRUNE */
1, /* META_PRUNE_ARG - plus the string length */
0, /* META_SKIP */
1, /* META_SKIP_ARG - plus the string length */
0, /* META_THEN */
1, /* META_THEN_ARG - plus the string length */
0, /* META_ASTERISK */
0, /* META_ASTERISK_PLUS */
0, /* META_ASTERISK_QUERY */
0, /* META_PLUS */
0, /* META_PLUS_PLUS */
0, /* META_PLUS_QUERY */
0, /* META_QUERY */
0, /* META_QUERY_PLUS */
0, /* META_QUERY_QUERY */
2, /* META_MINMAX */
2, /* META_MINMAX_PLUS */
2 /* META_MINMAX_QUERY */
};
/* Types for skipping parts of a parsed pattern. */
enum { PSKIP_ALT, PSKIP_CLASS, PSKIP_KET };
/* Macro for setting individual bits in class bitmaps. It took some
experimenting to figure out how to stop gcc 5.3.0 from warning with
-Wconversion. This version gets a warning:
#define SETBIT(a,b) a[(b)/8] |= (uint8_t)(1u << ((b)&7))
Let's hope the apparently less efficient version isn't actually so bad if the
compiler is clever with identical subexpressions. */
#define SETBIT(a,b) a[(b)/8] = (uint8_t)(a[(b)/8] | (1u << ((b)&7)))
/* Values and flags for the unsigned xxcuflags variables that accompany xxcu
variables, which are concerned with first and required code units. A value
greater than or equal to REQ_NONE means "no code unit set"; otherwise the
matching xxcu variable is set, and the low valued bits are relevant. */
#define REQ_UNSET 0xffffffffu /* Not yet found anything */
#define REQ_NONE 0xfffffffeu /* Found not fixed character */
#define REQ_CASELESS 0x00000001u /* Code unit in xxcu is caseless */
#define REQ_VARY 0x00000002u /* Code unit is followed by non-literal */
/* These flags are used in the groupinfo vector. */
#define GI_SET_FIXED_LENGTH 0x80000000u
#define GI_NOT_FIXED_LENGTH 0x40000000u
#define GI_FIXED_LENGTH_MASK 0x0000ffffu
/* This simple test for a decimal digit works for both ASCII/Unicode and EBCDIC
and is fast (a good compiler can turn it into a subtraction and unsigned
comparison). */
#define IS_DIGIT(x) ((x) >= CHAR_0 && (x) <= CHAR_9)
/* Table to identify hex digits. The tables in chartables are dependent on the
locale, and may mark arbitrary characters as digits. We want to recognize only
0-9, a-z, and A-Z as hex digits, which is why we have a private table here. It
costs 256 bytes, but it is a lot faster than doing character value tests (at
least in some simple cases I timed), and in some applications one wants PCRE2
to compile efficiently as well as match efficiently. The value in the table is
the binary hex digit value, or 0xff for non-hex digits. */
/* This is the "normal" case, for ASCII systems, and EBCDIC systems running in
UTF-8 mode. */
#ifndef EBCDIC
static const uint8_t xdigitab[] =
{
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0- 7 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 8- 15 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 16- 23 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 24- 31 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* - ' */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* ( - / */
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07, /* 0 - 7 */
0x08,0x09,0xff,0xff,0xff,0xff,0xff,0xff, /* 8 - ? */
0xff,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0xff, /* @ - G */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* H - O */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* P - W */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* X - _ */
0xff,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0xff, /* ` - g */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* h - o */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* p - w */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* x -127 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 128-135 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 136-143 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 144-151 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 152-159 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 160-167 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 168-175 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 176-183 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 184-191 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 192-199 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 2ff-207 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 208-215 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 216-223 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 224-231 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 232-239 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 240-247 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};/* 248-255 */
#else
/* This is the "abnormal" case, for EBCDIC systems not running in UTF-8 mode. */
static const uint8_t xdigitab[] =
{
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 0- 7 0 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 8- 15 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 16- 23 10 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 24- 31 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 32- 39 20 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 40- 47 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 48- 55 30 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 56- 63 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* - 71 40 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 72- | */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* & - 87 50 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 88- 95 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* - -103 60 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 104- ? */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 112-119 70 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 120- " */
0xff,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0xff, /* 128- g 80 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* h -143 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 144- p 90 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* q -159 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 160- x A0 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* y -175 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* ^ -183 B0 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* 184-191 */
0xff,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0xff, /* { - G C0 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* H -207 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* } - P D0 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* Q -223 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* \ - X E0 */
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /* Y -239 */
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07, /* 0 - 7 F0 */
0x08,0x09,0xff,0xff,0xff,0xff,0xff,0xff};/* 8 -255 */
#endif /* EBCDIC */
/* Table for handling alphanumeric escaped characters. Positive returns are
simple data values; negative values are for special things like \d and so on.
Zero means further processing is needed (for things like \x), or the escape is
invalid. */
/* This is the "normal" table for ASCII systems or for EBCDIC systems running
in UTF-8 mode. It runs from '0' to 'z'. */
#ifndef EBCDIC
#define ESCAPES_FIRST CHAR_0
#define ESCAPES_LAST CHAR_z
#define UPPER_CASE(c) (c-32)
static const short int escapes[] = {
0, 0,
0, 0,
0, 0,
0, 0,
0, 0,
CHAR_COLON, CHAR_SEMICOLON,
CHAR_LESS_THAN_SIGN, CHAR_EQUALS_SIGN,
CHAR_GREATER_THAN_SIGN, CHAR_QUESTION_MARK,
CHAR_COMMERCIAL_AT, -ESC_A,
-ESC_B, -ESC_C,
-ESC_D, -ESC_E,
0, -ESC_G,
-ESC_H, 0,
0, -ESC_K,
0, 0,
-ESC_N, 0,
-ESC_P, -ESC_Q,
-ESC_R, -ESC_S,
0, 0,
-ESC_V, -ESC_W,
-ESC_X, 0,
-ESC_Z, CHAR_LEFT_SQUARE_BRACKET,
CHAR_BACKSLASH, CHAR_RIGHT_SQUARE_BRACKET,
CHAR_CIRCUMFLEX_ACCENT, CHAR_UNDERSCORE,
CHAR_GRAVE_ACCENT, CHAR_BEL,
-ESC_b, 0,
-ESC_d, CHAR_ESC,
CHAR_FF, 0,
-ESC_h, 0,
0, -ESC_k,
0, 0,
CHAR_LF, 0,
-ESC_p, 0,
CHAR_CR, -ESC_s,
CHAR_HT, 0,
-ESC_v, -ESC_w,
0, 0,
-ESC_z
};
#else
/* This is the "abnormal" table for EBCDIC systems without UTF-8 support.
It runs from 'a' to '9'. For some minimal testing of EBCDIC features, the code
is sometimes compiled on an ASCII system. In this case, we must not use CHAR_a
because it is defined as 'a', which of course picks up the ASCII value. */
#if 'a' == 0x81 /* Check for a real EBCDIC environment */
#define ESCAPES_FIRST CHAR_a
#define ESCAPES_LAST CHAR_9
#define UPPER_CASE(c) (c+64)
#else /* Testing in an ASCII environment */
#define ESCAPES_FIRST ((unsigned char)'\x81') /* EBCDIC 'a' */
#define ESCAPES_LAST ((unsigned char)'\xf9') /* EBCDIC '9' */
#define UPPER_CASE(c) (c-32)
#endif
static const short int escapes[] = {
/* 80 */ CHAR_BEL, -ESC_b, 0, -ESC_d, CHAR_ESC, CHAR_FF, 0,
/* 88 */ -ESC_h, 0, 0, '{', 0, 0, 0, 0,
/* 90 */ 0, 0, -ESC_k, 0, 0, CHAR_LF, 0, -ESC_p,
/* 98 */ 0, CHAR_CR, 0, '}', 0, 0, 0, 0,
/* A0 */ 0, '~', -ESC_s, CHAR_HT, 0, -ESC_v, -ESC_w, 0,
/* A8 */ 0, -ESC_z, 0, 0, 0, '[', 0, 0,
/* B0 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* B8 */ 0, 0, 0, 0, 0, ']', '=', '-',
/* C0 */ '{', -ESC_A, -ESC_B, -ESC_C, -ESC_D, -ESC_E, 0, -ESC_G,
/* C8 */ -ESC_H, 0, 0, 0, 0, 0, 0, 0,
/* D0 */ '}', 0, -ESC_K, 0, 0, -ESC_N, 0, -ESC_P,
/* D8 */ -ESC_Q, -ESC_R, 0, 0, 0, 0, 0, 0,
/* E0 */ '\\', 0, -ESC_S, 0, 0, -ESC_V, -ESC_W, -ESC_X,
/* E8 */ 0, -ESC_Z, 0, 0, 0, 0, 0, 0,
/* F0 */ 0, 0, 0, 0, 0, 0, 0, 0,
/* F8 */ 0, 0
};
/* We also need a table of characters that may follow \c in an EBCDIC
environment for characters 0-31. */
static unsigned char ebcdic_escape_c[] = "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_";
#endif /* EBCDIC */
/* Table of special "verbs" like (*PRUNE). This is a short table, so it is
searched linearly. Put all the names into a single string, in order to reduce
the number of relocations when a shared library is dynamically linked. The
string is built from string macros so that it works in UTF-8 mode on EBCDIC
platforms. */
typedef struct verbitem {
unsigned int len; /* Length of verb name */
uint32_t meta; /* Base META_ code */
int has_arg; /* Argument requirement */
} verbitem;
static const char verbnames[] =
"\0" /* Empty name is a shorthand for MARK */
STRING_MARK0
STRING_ACCEPT0
STRING_F0
STRING_FAIL0
STRING_COMMIT0
STRING_PRUNE0
STRING_SKIP0
STRING_THEN;
static const verbitem verbs[] = {
{ 0, META_MARK, +1 }, /* > 0 => must have an argument */
{ 4, META_MARK, +1 },
{ 6, META_ACCEPT, -1 }, /* < 0 => Optional argument, convert to pre-MARK */
{ 1, META_FAIL, -1 },
{ 4, META_FAIL, -1 },
{ 6, META_COMMIT, 0 },
{ 5, META_PRUNE, 0 }, /* Optional argument; bump META code if found */
{ 4, META_SKIP, 0 },
{ 4, META_THEN, 0 }
};
static const int verbcount = sizeof(verbs)/sizeof(verbitem);
/* Verb opcodes, indexed by their META code offset from META_MARK. */
static const uint32_t verbops[] = {
OP_MARK, OP_ACCEPT, OP_FAIL, OP_COMMIT, OP_COMMIT_ARG, OP_PRUNE,
OP_PRUNE_ARG, OP_SKIP, OP_SKIP_ARG, OP_THEN, OP_THEN_ARG };
/* Table of "alpha assertions" like (*pla:...), similar to the (*VERB) table. */
typedef struct alasitem {
unsigned int len; /* Length of name */
uint32_t meta; /* Base META_ code */
} alasitem;
static const char alasnames[] =
STRING_pla0
STRING_plb0
STRING_napla0
STRING_naplb0
STRING_nla0
STRING_nlb0
STRING_positive_lookahead0
STRING_positive_lookbehind0
STRING_non_atomic_positive_lookahead0
STRING_non_atomic_positive_lookbehind0
STRING_negative_lookahead0
STRING_negative_lookbehind0
STRING_atomic0
STRING_sr0
STRING_asr0
STRING_script_run0
STRING_atomic_script_run;
static const alasitem alasmeta[] = {
{ 3, META_LOOKAHEAD },
{ 3, META_LOOKBEHIND },
{ 5, META_LOOKAHEAD_NA },
{ 5, META_LOOKBEHIND_NA },
{ 3, META_LOOKAHEADNOT },
{ 3, META_LOOKBEHINDNOT },
{ 18, META_LOOKAHEAD },
{ 19, META_LOOKBEHIND },
{ 29, META_LOOKAHEAD_NA },
{ 30, META_LOOKBEHIND_NA },
{ 18, META_LOOKAHEADNOT },
{ 19, META_LOOKBEHINDNOT },
{ 6, META_ATOMIC },
{ 2, META_SCRIPT_RUN }, /* sr = script run */
{ 3, META_ATOMIC_SCRIPT_RUN }, /* asr = atomic script run */
{ 10, META_SCRIPT_RUN }, /* script run */
{ 17, META_ATOMIC_SCRIPT_RUN } /* atomic script run */
};
static const int alascount = sizeof(alasmeta)/sizeof(alasitem);
/* Offsets from OP_STAR for case-independent and negative repeat opcodes. */
static uint32_t chartypeoffset[] = {
OP_STAR - OP_STAR, OP_STARI - OP_STAR,
OP_NOTSTAR - OP_STAR, OP_NOTSTARI - OP_STAR };
/* Tables of names of POSIX character classes and their lengths. The names are
now all in a single string, to reduce the number of relocations when a shared
library is dynamically loaded. The list of lengths is terminated by a zero
length entry. The first three must be alpha, lower, upper, as this is assumed
for handling case independence. The indices for graph, print, and punct are
needed, so identify them. */
static const char posix_names[] =
STRING_alpha0 STRING_lower0 STRING_upper0 STRING_alnum0
STRING_ascii0 STRING_blank0 STRING_cntrl0 STRING_digit0
STRING_graph0 STRING_print0 STRING_punct0 STRING_space0
STRING_word0 STRING_xdigit;
static const uint8_t posix_name_lengths[] = {
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 6, 0 };
#define PC_GRAPH 8
#define PC_PRINT 9
#define PC_PUNCT 10
/* Table of class bit maps for each POSIX class. Each class is formed from a
base map, with an optional addition or removal of another map. Then, for some
classes, there is some additional tweaking: for [:blank:] the vertical space
characters are removed, and for [:alpha:] and [:alnum:] the underscore
character is removed. The triples in the table consist of the base map offset,
second map offset or -1 if no second map, and a non-negative value for map
addition or a negative value for map subtraction (if there are two maps). The
absolute value of the third field has these meanings: 0 => no tweaking, 1 =>
remove vertical space characters, 2 => remove underscore. */
static const int posix_class_maps[] = {
cbit_word, cbit_digit, -2, /* alpha */
cbit_lower, -1, 0, /* lower */
cbit_upper, -1, 0, /* upper */
cbit_word, -1, 2, /* alnum - word without underscore */
cbit_print, cbit_cntrl, 0, /* ascii */
cbit_space, -1, 1, /* blank - a GNU extension */
cbit_cntrl, -1, 0, /* cntrl */
cbit_digit, -1, 0, /* digit */
cbit_graph, -1, 0, /* graph */
cbit_print, -1, 0, /* print */
cbit_punct, -1, 0, /* punct */
cbit_space, -1, 0, /* space */
cbit_word, -1, 0, /* word - a Perl extension */
cbit_xdigit,-1, 0 /* xdigit */
};
#ifdef SUPPORT_UNICODE
/* The POSIX class Unicode property substitutes that are used in UCP mode must
be in the order of the POSIX class names, defined above. */
static int posix_substitutes[] = {
PT_GC, ucp_L, /* alpha */
PT_PC, ucp_Ll, /* lower */
PT_PC, ucp_Lu, /* upper */
PT_ALNUM, 0, /* alnum */
-1, 0, /* ascii, treat as non-UCP */
-1, 1, /* blank, treat as \h */
PT_PC, ucp_Cc, /* cntrl */
PT_PC, ucp_Nd, /* digit */
PT_PXGRAPH, 0, /* graph */
PT_PXPRINT, 0, /* print */
PT_PXPUNCT, 0, /* punct */
PT_PXSPACE, 0, /* space */ /* Xps is POSIX space, but from 8.34 */
PT_WORD, 0, /* word */ /* Perl and POSIX space are the same */
-1, 0 /* xdigit, treat as non-UCP */
};
#define POSIX_SUBSIZE (sizeof(posix_substitutes) / (2*sizeof(uint32_t)))
#endif /* SUPPORT_UNICODE */
/* Masks for checking option settings. When PCRE2_LITERAL is set, only a subset
are allowed. */
#define PUBLIC_LITERAL_COMPILE_OPTIONS \
(PCRE2_ANCHORED|PCRE2_AUTO_CALLOUT|PCRE2_CASELESS|PCRE2_ENDANCHORED| \
PCRE2_FIRSTLINE|PCRE2_LITERAL|PCRE2_MATCH_INVALID_UTF| \
PCRE2_NO_START_OPTIMIZE|PCRE2_NO_UTF_CHECK|PCRE2_USE_OFFSET_LIMIT|PCRE2_UTF)
#define PUBLIC_COMPILE_OPTIONS \
(PUBLIC_LITERAL_COMPILE_OPTIONS| \
PCRE2_ALLOW_EMPTY_CLASS|PCRE2_ALT_BSUX|PCRE2_ALT_CIRCUMFLEX| \
PCRE2_ALT_VERBNAMES|PCRE2_DOLLAR_ENDONLY|PCRE2_DOTALL|PCRE2_DUPNAMES| \
PCRE2_EXTENDED|PCRE2_EXTENDED_MORE|PCRE2_MATCH_UNSET_BACKREF| \
PCRE2_MULTILINE|PCRE2_NEVER_BACKSLASH_C|PCRE2_NEVER_UCP| \
PCRE2_NEVER_UTF|PCRE2_NO_AUTO_CAPTURE|PCRE2_NO_AUTO_POSSESS| \
PCRE2_NO_DOTSTAR_ANCHOR|PCRE2_UCP|PCRE2_UNGREEDY)
#define PUBLIC_LITERAL_COMPILE_EXTRA_OPTIONS \
(PCRE2_EXTRA_MATCH_LINE|PCRE2_EXTRA_MATCH_WORD)
#define PUBLIC_COMPILE_EXTRA_OPTIONS \
(PUBLIC_LITERAL_COMPILE_EXTRA_OPTIONS| \
PCRE2_EXTRA_ALLOW_SURROGATE_ESCAPES|PCRE2_EXTRA_BAD_ESCAPE_IS_LITERAL| \
PCRE2_EXTRA_ESCAPED_CR_IS_LF|PCRE2_EXTRA_ALT_BSUX| \
PCRE2_EXTRA_ALLOW_LOOKAROUND_BSK)
/* Compile time error code numbers. They are given names so that they can more
easily be tracked. When a new number is added, the tables called eint1 and
eint2 in pcre2posix.c may need to be updated, and a new error text must be
added to compile_error_texts in pcre2_error.c. Also, the error codes in
pcre2.h.in must be updated - their values are exactly 100 greater than these
values. */
enum { ERR0 = COMPILE_ERROR_BASE,
ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9, ERR10,
ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19, ERR20,
ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29, ERR30,
ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39, ERR40,
ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49, ERR50,
ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59, ERR60,
ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69, ERR70,
ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERR78, ERR79, ERR80,
ERR81, ERR82, ERR83, ERR84, ERR85, ERR86, ERR87, ERR88, ERR89, ERR90,
ERR91, ERR92, ERR93, ERR94, ERR95, ERR96, ERR97, ERR98, ERR99 };
/* This is a table of start-of-pattern options such as (*UTF) and settings such
as (*LIMIT_MATCH=nnnn) and (*CRLF). For completeness and backward
compatibility, (*UTFn) is supported in the relevant libraries, but (*UTF) is
generic and always supported. */
enum { PSO_OPT, /* Value is an option bit */
PSO_FLG, /* Value is a flag bit */
PSO_NL, /* Value is a newline type */
PSO_BSR, /* Value is a \R type */
PSO_LIMH, /* Read integer value for heap limit */
PSO_LIMM, /* Read integer value for match limit */
PSO_LIMD }; /* Read integer value for depth limit */
typedef struct pso {
const uint8_t *name;
uint16_t length;
uint16_t type;
uint32_t value;
} pso;
/* NB: STRING_UTFn_RIGHTPAR contains the length as well */
static pso pso_list[] = {
{ (uint8_t *)STRING_UTFn_RIGHTPAR, PSO_OPT, PCRE2_UTF },
{ (uint8_t *)STRING_UTF_RIGHTPAR, 4, PSO_OPT, PCRE2_UTF },
{ (uint8_t *)STRING_UCP_RIGHTPAR, 4, PSO_OPT, PCRE2_UCP },
{ (uint8_t *)STRING_NOTEMPTY_RIGHTPAR, 9, PSO_FLG, PCRE2_NOTEMPTY_SET },
{ (uint8_t *)STRING_NOTEMPTY_ATSTART_RIGHTPAR, 17, PSO_FLG, PCRE2_NE_ATST_SET },
{ (uint8_t *)STRING_NO_AUTO_POSSESS_RIGHTPAR, 16, PSO_OPT, PCRE2_NO_AUTO_POSSESS },
{ (uint8_t *)STRING_NO_DOTSTAR_ANCHOR_RIGHTPAR, 18, PSO_OPT, PCRE2_NO_DOTSTAR_ANCHOR },
{ (uint8_t *)STRING_NO_JIT_RIGHTPAR, 7, PSO_FLG, PCRE2_NOJIT },
{ (uint8_t *)STRING_NO_START_OPT_RIGHTPAR, 13, PSO_OPT, PCRE2_NO_START_OPTIMIZE },
{ (uint8_t *)STRING_LIMIT_HEAP_EQ, 11, PSO_LIMH, 0 },
{ (uint8_t *)STRING_LIMIT_MATCH_EQ, 12, PSO_LIMM, 0 },
{ (uint8_t *)STRING_LIMIT_DEPTH_EQ, 12, PSO_LIMD, 0 },
{ (uint8_t *)STRING_LIMIT_RECURSION_EQ, 16, PSO_LIMD, 0 },
{ (uint8_t *)STRING_CR_RIGHTPAR, 3, PSO_NL, PCRE2_NEWLINE_CR },
{ (uint8_t *)STRING_LF_RIGHTPAR, 3, PSO_NL, PCRE2_NEWLINE_LF },
{ (uint8_t *)STRING_CRLF_RIGHTPAR, 5, PSO_NL, PCRE2_NEWLINE_CRLF },
{ (uint8_t *)STRING_ANY_RIGHTPAR, 4, PSO_NL, PCRE2_NEWLINE_ANY },
{ (uint8_t *)STRING_NUL_RIGHTPAR, 4, PSO_NL, PCRE2_NEWLINE_NUL },
{ (uint8_t *)STRING_ANYCRLF_RIGHTPAR, 8, PSO_NL, PCRE2_NEWLINE_ANYCRLF },
{ (uint8_t *)STRING_BSR_ANYCRLF_RIGHTPAR, 12, PSO_BSR, PCRE2_BSR_ANYCRLF },
{ (uint8_t *)STRING_BSR_UNICODE_RIGHTPAR, 12, PSO_BSR, PCRE2_BSR_UNICODE }
};
/* This table is used when converting repeating opcodes into possessified
versions as a result of an explicit possessive quantifier such as ++. A zero
value means there is no possessified version - in those cases the item in
question must be wrapped in ONCE brackets. The table is truncated at OP_CALLOUT
because all relevant opcodes are less than that. */
static const uint8_t opcode_possessify[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0 - 15 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 16 - 31 */
0, /* NOTI */
OP_POSSTAR, 0, /* STAR, MINSTAR */
OP_POSPLUS, 0, /* PLUS, MINPLUS */
OP_POSQUERY, 0, /* QUERY, MINQUERY */
OP_POSUPTO, 0, /* UPTO, MINUPTO */
0, /* EXACT */
0, 0, 0, 0, /* POS{STAR,PLUS,QUERY,UPTO} */
OP_POSSTARI, 0, /* STARI, MINSTARI */
OP_POSPLUSI, 0, /* PLUSI, MINPLUSI */
OP_POSQUERYI, 0, /* QUERYI, MINQUERYI */
OP_POSUPTOI, 0, /* UPTOI, MINUPTOI */
0, /* EXACTI */
0, 0, 0, 0, /* POS{STARI,PLUSI,QUERYI,UPTOI} */
OP_NOTPOSSTAR, 0, /* NOTSTAR, NOTMINSTAR */
OP_NOTPOSPLUS, 0, /* NOTPLUS, NOTMINPLUS */
OP_NOTPOSQUERY, 0, /* NOTQUERY, NOTMINQUERY */
OP_NOTPOSUPTO, 0, /* NOTUPTO, NOTMINUPTO */
0, /* NOTEXACT */
0, 0, 0, 0, /* NOTPOS{STAR,PLUS,QUERY,UPTO} */
OP_NOTPOSSTARI, 0, /* NOTSTARI, NOTMINSTARI */
OP_NOTPOSPLUSI, 0, /* NOTPLUSI, NOTMINPLUSI */
OP_NOTPOSQUERYI, 0, /* NOTQUERYI, NOTMINQUERYI */
OP_NOTPOSUPTOI, 0, /* NOTUPTOI, NOTMINUPTOI */
0, /* NOTEXACTI */
0, 0, 0, 0, /* NOTPOS{STARI,PLUSI,QUERYI,UPTOI} */
OP_TYPEPOSSTAR, 0, /* TYPESTAR, TYPEMINSTAR */
OP_TYPEPOSPLUS, 0, /* TYPEPLUS, TYPEMINPLUS */
OP_TYPEPOSQUERY, 0, /* TYPEQUERY, TYPEMINQUERY */
OP_TYPEPOSUPTO, 0, /* TYPEUPTO, TYPEMINUPTO */
0, /* TYPEEXACT */
0, 0, 0, 0, /* TYPEPOS{STAR,PLUS,QUERY,UPTO} */
OP_CRPOSSTAR, 0, /* CRSTAR, CRMINSTAR */
OP_CRPOSPLUS, 0, /* CRPLUS, CRMINPLUS */
OP_CRPOSQUERY, 0, /* CRQUERY, CRMINQUERY */
OP_CRPOSRANGE, 0, /* CRRANGE, CRMINRANGE */
0, 0, 0, 0, /* CRPOS{STAR,PLUS,QUERY,RANGE} */
0, 0, 0, /* CLASS, NCLASS, XCLASS */
0, 0, /* REF, REFI */
0, 0, /* DNREF, DNREFI */
0, 0 /* RECURSE, CALLOUT */
};
#ifdef DEBUG_SHOW_PARSED
/*************************************************
* Show the parsed pattern for debugging *
*************************************************/
/* For debugging the pre-scan, this code, which outputs the parsed data vector,
can be enabled. */
static void show_parsed(compile_block *cb)
{
uint32_t *pptr = cb->parsed_pattern;
for (;;)
{
int max, min;
PCRE2_SIZE offset;
uint32_t i;
uint32_t length;
uint32_t meta_arg = META_DATA(*pptr);
fprintf(stderr, "+++ %02d %.8x ", (int)(pptr - cb->parsed_pattern), *pptr);
if (*pptr < META_END)
{
if (*pptr > 32 && *pptr < 128) fprintf(stderr, "%c", *pptr);
pptr++;
}
else switch (META_CODE(*pptr++))
{
default:
fprintf(stderr, "**** OOPS - unknown META value - giving up ****\n");
return;
case META_END:
fprintf(stderr, "META_END\n");
return;
case META_CAPTURE:
fprintf(stderr, "META_CAPTURE %d", meta_arg);
break;
case META_RECURSE:
GETOFFSET(offset, pptr);
fprintf(stderr, "META_RECURSE %d %zd", meta_arg, offset);
break;
case META_BACKREF:
if (meta_arg < 10)
offset = cb->small_ref_offset[meta_arg];
else
GETOFFSET(offset, pptr);
fprintf(stderr, "META_BACKREF %d %zd", meta_arg, offset);
break;
case META_ESCAPE:
if (meta_arg == ESC_P || meta_arg == ESC_p)
{
uint32_t ptype = *pptr >> 16;
uint32_t pvalue = *pptr++ & 0xffff;
fprintf(stderr, "META \\%c %d %d", (meta_arg == ESC_P)? 'P':'p',
ptype, pvalue);
}
else
{
uint32_t cc;
/* There's just one escape we might have here that isn't negated in the
escapes table. */
if (meta_arg == ESC_g) cc = CHAR_g;
else for (cc = ESCAPES_FIRST; cc <= ESCAPES_LAST; cc++)
{
if (meta_arg == (uint32_t)(-escapes[cc - ESCAPES_FIRST])) break;
}
if (cc > ESCAPES_LAST) cc = CHAR_QUESTION_MARK;
fprintf(stderr, "META \\%c", cc);
}
break;
case META_MINMAX:
min = *pptr++;
max = *pptr++;
if (max != REPEAT_UNLIMITED)
fprintf(stderr, "META {%d,%d}", min, max);
else
fprintf(stderr, "META {%d,}", min);
break;