-
Notifications
You must be signed in to change notification settings - Fork 784
/
re.c
2606 lines (2321 loc) · 69.9 KB
/
re.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
/*
** re.c - Regexp class
**
** See Copyright Notice in mruby.h
*/
#include "mruby.h"
#include <string.h>
#include "mruby/string.h"
#include "encoding.h"
#include "re.h"
#include "mruby/array.h"
#include "regint.h"
#include "mruby/class.h"
#include "error.h"
#ifdef ENABLE_REGEXP
#define REGEX_CLASS (mrb_class_obj_get(mrb, "Regexp"))
#define MATCH_CLASS (mrb_class_obj_get(mrb, "MatchData"))
//from opcode.h
#define GETARG_A(i) ((((mrb_code)(i)) >> 24) & 0xff)
#define GETARG_B(i) ((((mrb_code)(i)) >> 16) & 0xff)
#define GETARG_C(i) ((((mrb_code)(i)) >> 8) & 0xff)
#define MKARG_A(c) (((c) & 0xff) << 24)
#define MKARG_B(c) (((c) & 0xff) << 16)
#define MKARG_C(c) (((c) & 0xff) << 8)
#define ARG_REG_OPTION_MASK \
(ONIG_OPTION_IGNORECASE|ONIG_OPTION_MULTILINE|ONIG_OPTION_EXTEND)
#define ARG_ENCODING_FIXED 16
#define ARG_ENCODING_NONE 32
#define REG_LITERAL FL_USER5
#define REG_ENCODING_NONE FL_USER6
typedef char onig_errmsg_buffer[ONIG_MAX_ERROR_MESSAGE_LEN];
#define mrb_bug printf
#define KCODE_FIXED FL_USER4
#define scan_oct(s,l,e) (int)ruby_scan_oct(s,l,e)
unsigned long ruby_scan_oct(const char*, size_t, size_t*);
#define scan_hex(s,l,e) (int)ruby_scan_hex(s,l,e)
unsigned long ruby_scan_hex(const char*, size_t, size_t*);
static mrb_value mrb_match_to_a(mrb_state *mrb, mrb_value match);
static mrb_value mrb_reg_preprocess(mrb_state *mrb, const char *p, const char *end, onig_errmsg_buffer err);
static void mrb_reg_expr_str(mrb_state *mrb, mrb_value str, const char *s, long len);
static char * option_to_str(char str[4], int options);
//static int may_need_recompile;
//static int reg_kcode = DEFAULT_KCODE;
/* ------------------------------------------------------------------------- */
/* RegExp Class */
/* ------------------------------------------------------------------------- */
/* 15.2.15.6.1 */
/*
* call-seq:
* class.new(args, ...) -> obj
*
* Calls <code>allocate</code> to create a new object of
* <i>class</i>'s class, then invokes that object's
* <code>initialize</code> method, passing it <i>args</i>.
* This is the method that ends up getting called whenever
* an object is constructed using .new.
*
*/
mrb_value
mrb_reg_s_new_instance(mrb_state *mrb, /*int argc, mrb_value *argv, */mrb_value self)
{
mrb_value argv[16];
int argc;
struct RRegexp *re;
mrb_get_args(mrb, "*", &argv, &argc);
re = (struct RRegexp*)mrb_obj_alloc(mrb, MRB_TT_REGEX, REGEX_CLASS);
re->ptr = 0;
re->src = 0;
re->usecnt = 0;
return mrb_funcall_argv(mrb, mrb_obj_value(re), mrb->init_sym, argc, argv);
}
mrb_value
mrb_reg_quote(mrb_state *mrb, mrb_value str)
{
char *s, *send, *t;
mrb_value tmp;
int c;
s = RSTRING_PTR(str);
send = s + RSTRING_LEN(str);
while (s < send) {
c = *s;
if (c == -1) {
s += send - s;
continue;
}
switch (c) {
case '[': case ']': case '{': case '}':
case '(': case ')': case '|': case '-':
case '*': case '.': case '\\':
case '?': case '+': case '^': case '$':
case ' ': case '#':
case '\t': case '\f': case '\n': case '\r':
goto meta_found;
}
s++;
}
tmp = mrb_str_new(mrb, RSTRING_PTR(str), RSTRING_LEN(str));
return tmp;
meta_found:
tmp = mrb_str_new(mrb, 0, RSTRING_LEN(str)*2);
t = RSTRING_PTR(tmp);
/* copy upto metacharacter */
memcpy(t, RSTRING_PTR(str), s - RSTRING_PTR(str));
t += s - RSTRING_PTR(str);
while (s < send) {
c = *s;
if (c == -1) {
int n = send - s;
while (n--)
*t++ = *s++;
continue;
}
s++;
switch (c) {
case '[': case ']': case '{': case '}':
case '(': case ')': case '|': case '-':
case '*': case '.': case '\\':
case '?': case '+': case '^': case '$':
case '#':
t += mrb_enc_mbcput('\\', t, enc);
break;
case ' ':
t += mrb_enc_mbcput('\\', t, enc);
t += mrb_enc_mbcput(' ', t, enc);
continue;
case '\t':
t += mrb_enc_mbcput('\\', t, enc);
t += mrb_enc_mbcput('t', t, enc);
continue;
case '\n':
t += mrb_enc_mbcput('\\', t, enc);
t += mrb_enc_mbcput('n', t, enc);
continue;
case '\r':
t += mrb_enc_mbcput('\\', t, enc);
t += mrb_enc_mbcput('r', t, enc);
continue;
case '\f':
t += mrb_enc_mbcput('\\', t, enc);
t += mrb_enc_mbcput('f', t, enc);
continue;
case '\v':
t += mrb_enc_mbcput('\\', t, enc);
t += mrb_enc_mbcput('v', t, enc);
continue;
}
t += mrb_enc_mbcput(c, t, enc);
}
mrb_str_resize(mrb, tmp, t - RSTRING_PTR(tmp));
return tmp;
}
static mrb_value
reg_operand(mrb_state *mrb, mrb_value s, int check)
{
if (mrb_type(s) == MRB_TT_SYMBOL) {
//return mrb_sym_to_s(s);
return mrb_obj_inspect(mrb, s);
}
else {
mrb_value tmp = mrb_check_string_type(mrb, s);
if (check && mrb_nil_p(tmp)) {
mrb_raise(mrb, E_TYPE_ERROR, "can't convert %s to String",
mrb_obj_classname(mrb, s));
}
return tmp;
}
}
/* 15.2.15.6.2 */
/* 15.2.15.6.4 */
/*
* call-seq:
* Regexp.escape(str) -> string
* Regexp.quote(str) -> string
*
* Escapes any characters that would have special meaning in a regular
* expression. Returns a new escaped string, or self if no characters are
* escaped. For any string,
* <code>Regexp.new(Regexp.escape(<i>str</i>))=~<i>str</i></code> will be true.
*
* Regexp.escape('\*?{}.') #=> \\\*\?\{\}\.
*
*/
static mrb_value
mrb_reg_s_quote(mrb_state *mrb, mrb_value c/*, mrb_value str*/)
{
mrb_value str;
mrb_get_args(mrb, "o", &str);
return mrb_reg_quote(mrb, reg_operand(mrb, str, 1/*TRUE*/));
}
static void
match_check(mrb_state *mrb, mrb_value match)
{
struct RMatch *m = mrb_match_ptr(match);
if (!m->str) {
mrb_raise(mrb, E_TYPE_ERROR, "uninitialized Match");
}
}
mrb_value
mrb_reg_nth_match(mrb_state *mrb, mrb_int nth, mrb_value match)
{
mrb_value str;
long start, end, len;
struct RMatch *m = mrb_match_ptr(match);
if (mrb_nil_p(match)) return mrb_nil_value();
match_check(mrb, match);
if (nth >= m->rmatch->regs.num_regs) {
return mrb_nil_value();
}
if (nth < 0) {
nth += m->rmatch->regs.num_regs;
if (nth <= 0) return mrb_nil_value();
}
start = m->rmatch->regs.beg[nth];
if (start == -1) return mrb_nil_value();
end = m->rmatch->regs.end[nth];
len = end - start;
str = mrb_str_subseq(mrb, mrb_obj_value(m->str), start, len);
return str;
}
mrb_value
mrb_reg_last_match(mrb_state *mrb, mrb_value match)
{
return mrb_reg_nth_match(mrb, 0, match);
}
static int
match_backref_number(mrb_state *mrb, mrb_value match, mrb_value backref)
{
const char *name;
int num;
struct re_registers *regs = RMATCH_REGS(match);
struct RRegexp *regexp = RMATCH(match)->regexp;
match_check(mrb, match);
switch(mrb_type(backref)) {
default:
return mrb_fixnum(backref);
case MRB_TT_SYMBOL:
name = mrb_sym2name(mrb, SYM2ID(backref));
break;
case MRB_TT_STRING:
//name = StringValueCStr(backref);
name = mrb_string_value_cstr(mrb, &backref);
break;
}
num = onig_name_to_backref_number(regexp->ptr,
(const unsigned char*)name,
(const unsigned char*)name + strlen(name),
regs);
if (num < 1) {
mrb_raise(mrb, E_INDEX_ERROR, "undefined group name reference: %s", name);
}
return num;
}
/* 15.2.15.6.3 */
/*
* call-seq:
* Regexp.last_match -> matchdata
* Regexp.last_match(n) -> str
*
* The first form returns the <code>MatchData</code> object generated by the
* last successful pattern match. Equivalent to reading the global variable
* <code>$~</code>. The second form returns the <i>n</i>th field in this
* <code>MatchData</code> object.
* <em>n</em> can be a string or symbol to reference a named capture.
*
* Note that the <code>last_match</code> is local to the thread and method scope
* of the method that did the pattern match.
*
* /c(.)t/ =~ 'cat' #=> 0
* Regexp.last_match #=> #<MatchData "cat" 1:"a">
* Regexp.last_match(0) #=> "cat"
* Regexp.last_match(1) #=> "a"
* Regexp.last_match(2) #=> nil
*
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ "var = val"
* Regexp.last_match #=> #<MatchData "var = val" lhs:"var" rhs:"val">
* Regexp.last_match(:lhs) #=> "var"
* Regexp.last_match(:rhs) #=> "val"
*/
static mrb_value
mrb_reg_s_last_match(mrb_state *mrb, mrb_value self/*int argc, mrb_value *argv*/)
{
//mrb_value nth;
mrb_value argv[16];
int argc;
mrb_value match = mrb_backref_get(mrb);
//if (argc > 0 && mrb_scan_args(argc, argv, "01", &nth) == 1) {
mrb_get_args(mrb, "*", &argv, &argc);
if (argc != 0) {
int n;
if (mrb_nil_p(match)) return mrb_nil_value();
n = match_backref_number(mrb, match, argv[0]);
return mrb_reg_nth_match(mrb, n, match);
}
return match;//match_getter();
}
static void
mrb_reg_check(mrb_state *mrb, mrb_value re)
{
//struct RRegexp *r = mrb_regex_ptr(re);
//if (!(RREGEXP(re)->ptr) || !RREGEXP_SRC(re) || !RREGEXP_SRC_PTR(re)) {
if (!(RREGEXP(re)->ptr)) {
mrb_raise(mrb, E_TYPE_ERROR, "uninitialized Regexp");
}
if (RREGEXP(re)->src == 0) {
mrb_raise(mrb, E_TYPE_ERROR, "uninitialized Regexp");
}
}
int
mrb_reg_options(mrb_state *mrb, mrb_value re)
{
int options;
mrb_reg_check(mrb, re);
options = RREGEXP(re)->ptr->options & ARG_REG_OPTION_MASK;
if (RBASIC(re)->flags & KCODE_FIXED) options |= ARG_ENCODING_FIXED;
if (RBASIC(re)->flags & REG_ENCODING_NONE) options |= ARG_ENCODING_NONE;
return options;
}
static mrb_value
mrb_reg_desc(mrb_state *mrb, const char *s, long len, mrb_value re)
{
mrb_value str = mrb_str_new(mrb, "/", 1);
mrb_reg_expr_str(mrb, str, s, len);
mrb_str_buf_cat(mrb, str, "/", 1);
if (re.tt) {
char opts[4];
mrb_reg_check(mrb, re);
if (*option_to_str(opts, RREGEXP(re)->ptr->options))
mrb_str_buf_cat(mrb, str, opts, strlen(opts));//mrb_str_buf_cat2(str, opts);
if (RBASIC(re)->flags & REG_ENCODING_NONE)
mrb_str_buf_cat(mrb, str, "n", 1);
}
return str;
}
static void
mrb_reg_raise(mrb_state *mrb, const char *s, long len, const char *err, mrb_value re)
{
mrb_value desc = mrb_reg_desc(mrb, s, len, re);
mrb_raise(mrb, E_REGEXP_ERROR, "%s: %s", err, RSTRING_PTR(desc));
}
regex_t *
mrb_reg_prepare_re(mrb_state *mrb, mrb_value re, mrb_value str)
{
regex_t *reg = RREGEXP(re)->ptr;
onig_errmsg_buffer err = "";
int r;
OnigErrorInfo einfo;
const char *pattern;
mrb_value unescaped;
mrb_encoding *enc = mrb_ascii8bit_encoding(mrb);
mrb_reg_check(mrb, re);
reg = RREGEXP(re)->ptr;
pattern = RREGEXP_SRC_PTR(re);
unescaped = mrb_reg_preprocess(mrb,
pattern, pattern + RREGEXP(re)->src->len, err);
if (mrb_nil_p(unescaped)) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "regexp preprocess failed: %s", err);
}
r = onig_new(®, (UChar* )RSTRING_PTR(unescaped),
(UChar* )(RSTRING_PTR(unescaped) + RSTRING_LEN(unescaped)),
reg->options, enc,
OnigDefaultSyntax, &einfo);
if (r) {
onig_error_code_to_str((UChar*)err, r, &einfo);
mrb_reg_raise(mrb, pattern, RREGEXP_SRC_LEN(re), err, re);
}
//RB_GC_GUARD(unescaped);
return reg;
}
mrb_int
mrb_reg_search(mrb_state *mrb, mrb_value re, mrb_value str, mrb_int pos, mrb_int reverse)
{
long result;
mrb_value match;
struct re_registers regi, *regs = ®i;
char *range = RSTRING_PTR(str);
regex_t *reg;
int tmpreg;
if (pos > RSTRING_LEN(str) || pos < 0) {
mrb_backref_set(mrb, mrb_nil_value());
return -1;
}
reg = mrb_reg_prepare_re(mrb, re, str);
tmpreg = reg != RREGEXP(re)->ptr;
if (!tmpreg) RREGEXP(re)->usecnt++;
match = mrb_backref_get(mrb);
if (!mrb_nil_p(match)) {
/*if (FL_TEST(match, MATCH_BUSY)) {
match = Qnil;
}
else {
regs = RMATCH_REGS(match);
}*/
regs = RMATCH_REGS(match);
}
if (mrb_nil_p(match)) {
memset(regs, 0, sizeof(struct re_registers));
}
//-->
if (!reverse) {
range += RSTRING_LEN(str);
}
result = onig_search(reg,
(UChar*)(RSTRING_PTR(str)),
((UChar*)(RSTRING_PTR(str)) + RSTRING_LEN(str)),
((UChar*)(RSTRING_PTR(str)) + pos),
((UChar*)range),
regs, ONIG_OPTION_NONE);
if (!tmpreg) RREGEXP(re)->usecnt--;
if (tmpreg) {
if (RREGEXP(re)->usecnt) {
onig_free(reg);
}
else {
onig_free(RREGEXP(re)->ptr);
RREGEXP(re)->ptr = reg;
}
}
if (result < 0) {
if (regs == ®i)
onig_region_free(regs, 0);
if (result == ONIG_MISMATCH) {
mrb_backref_set(mrb, mrb_nil_value());
return result;
}
else {
onig_errmsg_buffer err = "";
onig_error_code_to_str((UChar*)err, (int)result);
mrb_reg_raise(mrb, RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), err, re);
}
}
//--<
if (mrb_nil_p(match) ) {
match = match_alloc(mrb);
onig_region_copy(RMATCH_REGS(match), regs);
onig_region_free(regs, 0);
}
RMATCH(match)->str = mrb_str_ptr(str);
RMATCH(match)->regexp = mrb_regex_ptr(re);
RMATCH(match)->rmatch->char_offset_updated = 0;
mrb_backref_set(mrb, match);
return result;
}
mrb_int
mrb_reg_adjust_startpos(mrb_state *mrb, mrb_value re, mrb_value str, mrb_int pos, mrb_int reverse)
{
mrb_int range;
struct RString *s = mrb_str_ptr(str);
struct RRegexp *r = mrb_regex_ptr(re);
mrb_reg_check(mrb, re);
/*if (may_need_recompile) mrb_reg_prepare_re(re);*/
/* if (FL_TEST(re, KCODE_FIXED))
mrb_kcode_set_option(re);
else if (reg_kcode != curr_kcode)
mrb_kcode_reset_option(); */
if (reverse) {
range = -pos;
}
else {
range = s->len - pos;
}
return re_adjust_startpos(r->ptr,
s->buf, s->len,
pos, range);
}
static int
onig_new_with_source(regex_t** reg, const UChar* pattern, const UChar* pattern_end,
OnigOptionType option, OnigEncoding enc, const OnigSyntaxType* syntax,
OnigErrorInfo* einfo, const char *sourcefile, int sourceline)
{
int r;
*reg = (regex_t* )malloc/*xmalloc*/(sizeof(regex_t));
if ((void*)(*reg) == (void*)0) return ONIGERR_MEMORY;
r = onig_reg_init(*reg, option, ONIGENC_CASE_FOLD_DEFAULT, enc, syntax);
if (r) goto err;
r = onig_compile(*reg, pattern, pattern_end, einfo, sourcefile, sourceline);
if (r) {
err:
onig_free(*reg);
*reg = 0/*NULL*/;
}
return r;
}
static Regexp*
make_regexp(const char *s, long len, mrb_encoding *enc, int flags, onig_errmsg_buffer err,
const char *sourcefile, int sourceline)
{
Regexp *rp;
int r;
OnigErrorInfo einfo;
/* Handle escaped characters first. */
/* Build a copy of the string (in dest) with the
escaped characters translated, and generate the regex
from that.
*/
r = onig_new_with_source(&rp, (UChar*)s, (UChar*)(s + len), flags,
enc, OnigDefaultSyntax, &einfo, sourcefile, sourceline);
if (r) {
onig_error_code_to_str((UChar*)err, r, &einfo);
return 0;
}
return rp;
}
unsigned long
ruby_scan_hex(const char *start, size_t len, size_t *retlen)
{
static const char hexdigit[] = "0123456789abcdef0123456789ABCDEF";
register const char *s = start;
register unsigned long retval = 0;
const char *tmp;
while (len-- && *s && (tmp = strchr(hexdigit, *s))) {
retval <<= 4;
retval |= (tmp - hexdigit) & 15;
s++;
}
*retlen = (int)(s - start); /* less than len */
return retval;
}
#define BYTEWIDTH 8
int
mrb_uv_to_utf8(mrb_state *mrb, char buf[6], unsigned long uv)
{
if (uv <= 0x7f) {
buf[0] = (char)uv;
return 1;
}
if (uv <= 0x7ff) {
buf[0] = (char)((uv>>6)&0xff)|0xc0;
buf[1] = (char)(uv&0x3f)|0x80;
return 2;
}
if (uv <= 0xffff) {
buf[0] = (char)((uv>>12)&0xff)|0xe0;
buf[1] = (char)((uv>>6)&0x3f)|0x80;
buf[2] = (char)(uv&0x3f)|0x80;
return 3;
}
if (uv <= 0x1fffff) {
buf[0] = (char)((uv>>18)&0xff)|0xf0;
buf[1] = (char)((uv>>12)&0x3f)|0x80;
buf[2] = (char)((uv>>6)&0x3f)|0x80;
buf[3] = (char)(uv&0x3f)|0x80;
return 4;
}
if (uv <= 0x3ffffff) {
buf[0] = (char)((uv>>24)&0xff)|0xf8;
buf[1] = (char)((uv>>18)&0x3f)|0x80;
buf[2] = (char)((uv>>12)&0x3f)|0x80;
buf[3] = (char)((uv>>6)&0x3f)|0x80;
buf[4] = (char)(uv&0x3f)|0x80;
return 5;
}
if (uv <= 0x7fffffff) {
buf[0] = (char)((uv>>30)&0xff)|0xfc;
buf[1] = (char)((uv>>24)&0x3f)|0x80;
buf[2] = (char)((uv>>18)&0x3f)|0x80;
buf[3] = (char)((uv>>12)&0x3f)|0x80;
buf[4] = (char)((uv>>6)&0x3f)|0x80;
buf[5] = (char)(uv&0x3f)|0x80;
return 6;
}
mrb_raise(mrb, E_RANGE_ERROR, "pack(U): value out of range");
return 0;
}
unsigned long
ruby_scan_oct(const char *start, size_t len, size_t *retlen)
{
register const char *s = start;
register unsigned long retval = 0;
while (len-- && *s >= '0' && *s <= '7') {
retval <<= 3;
retval |= *s++ - '0';
}
*retlen = (int)(s - start); /* less than len */
return retval;
}
static mrb_value
mrb_reg_preprocess(mrb_state *mrb, const char *p, const char *end, onig_errmsg_buffer err)
{
return mrb_nil_value();
}
static int
mrb_reg_initialize(mrb_state *mrb, mrb_value obj, const char *s, long len,
int options, onig_errmsg_buffer err,
const char *sourcefile, int sourceline)
{
struct RRegexp *re = RREGEXP(obj);
mrb_value unescaped;
mrb_encoding *enc = mrb_ascii8bit_encoding(mrb);
if (re->ptr)
mrb_raise(mrb, E_TYPE_ERROR, "already initialized regexp");
re->ptr = 0;
unescaped = mrb_reg_preprocess(mrb, s, s+len, err);
if (mrb_nil_p(unescaped))
return -1;
if ((options & ARG_ENCODING_FIXED)) {
//re->basic.flags |= KCODE_FIXED;
re->flags|= KCODE_FIXED;
}
if (options & ARG_ENCODING_NONE) {
re->flags |= REG_ENCODING_NONE;
}
re->ptr = make_regexp(RSTRING_PTR(unescaped), RSTRING_LEN(unescaped), enc,
options & ARG_REG_OPTION_MASK, err,
sourcefile, sourceline);
if (!re->ptr) return -1;
re->src = mrb_str_ptr(mrb_str_new(mrb, s, len));
return 0;
}
static int
mrb_reg_initialize_str(mrb_state *mrb, mrb_value obj, mrb_value str, int options, onig_errmsg_buffer err,
const char *sourcefile, int sourceline)
{
int ret;
#if 0
if (options & ARG_ENCODING_NONE) {
mrb_encoding *ascii8bit = mrb_ascii8bit_encoding(mrb);
if (enc != ascii8bit) {
if (mrb_enc_str_coderange(mrb, str) != ENC_CODERANGE_7BIT) {
//errcpy(err, "/.../n has a non escaped non ASCII character in non ASCII-8BIT script");
printf("/.../n has a non escaped non ASCII character in non ASCII-8BIT script");
return -1;
}
enc = ascii8bit;
}
}
#endif
ret = mrb_reg_initialize(mrb, obj, RSTRING_PTR(str), RSTRING_LEN(str),
options, err, sourcefile, sourceline);
return ret;
}
/* 15.2.15.7.1 */
/*
* call-seq:
* Regexp.initialize(string, [options [, lang]]) -> regexp
* Regexp.initialize(regexp) -> regexp
*
* Constructs a new regular expression from <i>pattern</i>, which can be either
* a <code>String</code> or a <code>Regexp</code> (in which case that regexp's
* options are propagated, and new options may not be specified (a change as of
* Ruby 1.8). If <i>options</i> is a <code>Fixnum</code>, it should be one or
* more of the constants <code>Regexp::EXTENDED</code>,
* <code>Regexp::IGNORECASE</code>, and <code>Regexp::MULTILINE</code>,
* <em>or</em>-ed together. Otherwise, if <i>options</i> is not
* <code>nil</code>, the regexp will be case insensitive.
* When the <i>lang</i> parameter is `n' or `N' sets the regexp no encoding.
*
* r1 = Regexp.initialize('^a-z+:\\s+\w+') #=> /^a-z+:\s+\w+/
* r2 = Regexp.initialize('cat', true) #=> /cat/i
* r3 = Regexp.initialize('dog', Regexp::EXTENDED) #=> /dog/x
* r4 = Regexp.initialize(r2) #=> /cat/i
*/
static mrb_value
mrb_reg_initialize_m(mrb_state *mrb, /*int argc, mrb_value *argv,*/ mrb_value self)
{
mrb_value argv[16];
int argc;
onig_errmsg_buffer err = "";
int flags = 0;
mrb_value str;
const char *ptr;
long len;
mrb_get_args(mrb, "*", &argv, &argc);
if (argc == 0 || argc > 3) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "wrong number of arguments (%d for 1..3)", argc);
}
if (mrb_type(argv[0]) == MRB_TT_REGEX) {
mrb_value re = argv[0];
if (argc > 1) {
/* mrb_warn("flags ignored"); */
printf("flags ignored");
}
mrb_reg_check(mrb, re);
flags = mrb_reg_options(mrb, re);
ptr = RREGEXP_SRC_PTR(re);
len = RREGEXP_SRC_LEN(re);
if (mrb_reg_initialize(mrb, self, ptr, len, flags, err, NULL, 0)) {
printf("mrb_reg_raise_str(str, flags, err);");
}
}
else {
if (argc >= 2) {
if (mrb_type(argv[1]) == MRB_TT_FIXNUM) flags = mrb_fixnum(argv[1]);
else if (mrb_test(argv[1])) flags = ONIG_OPTION_IGNORECASE;
}
if (argc == 3 && !mrb_nil_p(argv[2])) {
//char *kcode = StringValuePtr(argv[2]);
char *kcode = mrb_string_value_ptr(mrb, argv[2]);
if (kcode[0] == 'n' || kcode[0] == 'N') {
flags |= ARG_ENCODING_NONE;
}
else {
/*mrb_warn("encoding option is ignored - %s", kcode); */
printf("mrb_warn:encoding option is ignored - %s", kcode);
}
}
str = argv[0];
//ptr = StringValuePtr(str);
ptr = mrb_string_value_ptr(mrb, str);
if (mrb_reg_initialize_str(mrb, self, str, flags, err, NULL, 0)) {
//mrb_reg_raise_str(str, flags, err);
}
}
return self;
}
/* 15.2.15.7.2 */
/* :nodoc: */
static mrb_value
mrb_reg_init_copy(mrb_state *mrb, mrb_value re/*, mrb_value copy*/)
{
mrb_value argv[16];
int argc;
onig_errmsg_buffer err = "";
const char *s;
long len;
mrb_value copy;
mrb_get_args(mrb, "*", &argv, &argc);
copy = argv[0];
if (mrb_obj_equal(mrb, copy, re)) return copy;
/*mrb_check_frozen(copy);*/
/* need better argument type check */
if (!mrb_obj_is_instance_of(mrb, re, mrb_obj_class(mrb, copy))) {
mrb_raise(mrb, E_TYPE_ERROR, "wrong argument type");
}
mrb_reg_check(mrb, copy);
s = RREGEXP_SRC_PTR(copy);
len = RREGEXP_SRC_LEN(copy);
if (mrb_reg_initialize(mrb, re, s, len, mrb_reg_options(mrb, copy),
err, 0/*NULL*/, 0) != 0) {
mrb_reg_raise(mrb, s, len, err, re);
}
return re;
}
static int
reg_equal(mrb_state *mrb, struct RRegexp *re1, struct RRegexp *re2)
{
if (re1->ptr->options != re2->ptr->options) return FALSE;
if (!mrb_equal(mrb, mrb_obj_value(re1->src), mrb_obj_value(re2->src)))
return FALSE;
return TRUE;
}
static int
mrb_reg_equal(mrb_state *mrb, mrb_value re1, mrb_value re2)
{
if (mrb_obj_equal(mrb, re1, re2)) return TRUE;
if (mrb_type(re2) != MRB_TT_REGEX) return FALSE;
mrb_reg_check(mrb, re1);
mrb_reg_check(mrb, re2);
return reg_equal(mrb, RREGEXP(re1), RREGEXP(re2));
}
/* 15.2.15.7.3 */
/*
* call-seq:
* rxp == other_rxp -> true or false
* rxp.eql?(other_rxp) -> true or false
*
* Equality---Two regexps are equal if their patterns are identical, they have
* the same character set code, and their <code>casefold?</code> values are the
* same.
*
* /abc/ == /abc/x #=> false
* /abc/ == /abc/i #=> false
* /abc/ == /abc/n #=> false
* /abc/u == /abc/n #=> false
*/
static mrb_value
mrb_reg_equal_m(mrb_state *mrb, mrb_value re1/*, mrb_value re2*/)
{
mrb_value re2;
mrb_get_args(mrb, "o", &re2);
if (mrb_reg_equal(mrb, re1, re2))
return mrb_true_value();
return mrb_false_value();
}
/* 15.2.15.7.4 */
/*
* call-seq:
* rxp === str -> true or false
*
* Case Equality---Synonym for <code>Regexp#=~</code> used in case statements.
*
* a = "HELLO"
* case a
* when /^[a-z]*$/; print "Lower case\n"
* when /^[A-Z]*$/; print "Upper case\n"
* else; print "Mixed case\n"
* end
*
* <em>produces:</em>
*
* Upper case
*/
mrb_value
mrb_reg_eqq(mrb_state *mrb, mrb_value re/*, mrb_value str*/)
{
long start;
mrb_value str;
mrb_get_args(mrb, "o", &str);
str = reg_operand(mrb, str, 0/*FALSE*/);
if (mrb_nil_p(str)) {
mrb_backref_set(mrb, mrb_nil_value());
return mrb_false_value();
}
start = mrb_reg_search(mrb, re, str, 0, 0);
if (start < 0) {
return mrb_false_value();
}
return mrb_true_value();
}
static long
reg_match_pos(mrb_state *mrb, mrb_value re, mrb_value *strp, long pos)
{
mrb_value str = *strp;
if (mrb_nil_p(str)) {
mrb_backref_set(mrb, mrb_nil_value());
return -1;
}
*strp = str = reg_operand(mrb, str, 1/*TRUE*/);
if (pos != 0) {
if (pos < 0) {
mrb_value l = mrb_str_size(mrb, str);
pos += mrb_fixnum(l);
if (pos < 0) {
return pos;
}
}
pos = mrb_str_offset(mrb, str, pos);
}
return mrb_reg_search(mrb, re, str, pos, 0);
}
mrb_value
mrb_reg_match_str(mrb_state *mrb, mrb_value re, mrb_value str)
{
mrb_int pos = reg_match_pos(mrb, re, &str, 0);
if (pos < 0) return mrb_nil_value();
pos = mrb_str_sublen(mrb, str, pos);
return mrb_fixnum_value(pos);
}
/* 15.2.15.7.5 */
/*
* call-seq:
* rxp =~ str -> integer or nil
*
* Match---Matches <i>rxp</i> against <i>str</i>.
*
* /at/ =~ "input data" #=> 7
* /ax/ =~ "input data" #=> nil
*
* If <code>=~</code> is used with a regexp literal with named captures,
* captured strings (or nil) is assigned to local variables named by
* the capture names.
*
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ " x = y "
* p lhs #=> "x"
* p rhs #=> "y"
*
* If it is not matched, nil is assigned for the variables.
*
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ " x = "
* p lhs #=> nil
* p rhs #=> nil
*
* This assignment is implemented in the Ruby parser.
* The parser detects 'regexp-literal =~ expression' for the assignment.
* The regexp must be a literal without interpolation and placed at left hand side.
*
* The assignment is not occur if the regexp is not a literal.
*
* re = /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/
* re =~ " x = y "
* p lhs # undefined local variable
* p rhs # undefined local variable
*
* A regexp interpolation, <code>#{}</code>, also disables
* the assignment.
*
* rhs_pat = /(?<rhs>\w+)/
* /(?<lhs>\w+)\s*=\s*#{rhs_pat}/ =~ "x = y"
* p lhs # undefined local variable
*
* The assignment is not occur if the regexp is placed at right hand side.
*
* " x = y " =~ /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/
* p lhs, rhs # undefined local variable
*
*/
mrb_value
mrb_reg_match(mrb_state *mrb, mrb_value re/*, mrb_value str*/)
{
mrb_value str;
mrb_get_args(mrb, "o", &str);
return mrb_reg_match_str(mrb, re, str);
}
/* 15.2.15.7.6 */
/*
* call-seq:
* rxp.casefold? -> true or false
*
* Returns the value of the case-insensitive flag.
*
* /a/.casefold? #=> false
* /a/i.casefold? #=> true
* /(?i:a)/.casefold? #=> false
*/