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
|
/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2012 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@php.net> |
| Jim Winstead <jimw@php.net> |
| Jaakko Hyvätti <jaakko@hyvatti.iki.fi> |
+----------------------------------------------------------------------+
*/
/* $Id: ereg.c 321634 2012-01-01 13:15:04Z felipe $ */
#include <stdio.h>
#include <ctype.h>
#include "php.h"
#include "ext/standard/php_string.h"
#include "php_ereg.h"
#include "ext/standard/info.h"
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO_EX(arginfo_ereg, 0, 0, 2)
ZEND_ARG_INFO(0, pattern)
ZEND_ARG_INFO(0, string)
ZEND_ARG_INFO(1, registers) /* ARRAY_INFO(1, registers, 1) */
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_ereg_replace, 0)
ZEND_ARG_INFO(0, pattern)
ZEND_ARG_INFO(0, replacement)
ZEND_ARG_INFO(0, string)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_split, 0, 0, 2)
ZEND_ARG_INFO(0, pattern)
ZEND_ARG_INFO(0, string)
ZEND_ARG_INFO(0, limit)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_sql_regcase, 0)
ZEND_ARG_INFO(0, string)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ Function table */
const zend_function_entry ereg_functions[] = {
PHP_DEP_FE(ereg, arginfo_ereg)
PHP_DEP_FE(ereg_replace, arginfo_ereg_replace)
PHP_DEP_FE(eregi, arginfo_ereg)
PHP_DEP_FE(eregi_replace, arginfo_ereg_replace)
PHP_DEP_FE(split, arginfo_split)
PHP_DEP_FE(spliti, arginfo_split)
PHP_DEP_FE(sql_regcase, arginfo_sql_regcase)
PHP_FE_END
};
/* }}} */
/* {{{ reg_cache */
typedef struct {
regex_t preg;
int cflags;
unsigned long lastuse;
} reg_cache;
static int reg_magic = 0;
#define EREG_CACHE_SIZE 4096
/* }}} */
ZEND_DECLARE_MODULE_GLOBALS(ereg)
static PHP_GINIT_FUNCTION(ereg);
static PHP_GSHUTDOWN_FUNCTION(ereg);
/* {{{ Module entry */
zend_module_entry ereg_module_entry = {
STANDARD_MODULE_HEADER,
"ereg",
ereg_functions,
NULL,
NULL,
NULL,
NULL,
PHP_MINFO(ereg),
NO_VERSION_YET,
PHP_MODULE_GLOBALS(ereg),
PHP_GINIT(ereg),
PHP_GSHUTDOWN(ereg),
NULL,
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
/* {{{ COMPILE_DL_EREG */
#ifdef COMPILE_DL_EREG
ZEND_GET_MODULE(ereg)
#endif
/* }}} */
/* {{{ ereg_lru_cmp */
static int ereg_lru_cmp(const void *a, const void *b TSRMLS_DC)
{
Bucket *f = *((Bucket **) a);
Bucket *s = *((Bucket **) b);
if (((reg_cache *)f->pData)->lastuse <
((reg_cache *)s->pData)->lastuse) {
return -1;
} else if (((reg_cache *)f->pData)->lastuse ==
((reg_cache *)s->pData)->lastuse) {
return 0;
} else {
return 1;
}
}
/* }}} */
/* {{{ static ereg_clean_cache */
static int ereg_clean_cache(void *data, void *arg TSRMLS_DC)
{
int *num_clean = (int *)arg;
if (*num_clean > 0) {
(*num_clean)--;
return ZEND_HASH_APPLY_REMOVE;
} else {
return ZEND_HASH_APPLY_STOP;
}
}
/* }}} */
/* {{{ _php_regcomp
*/
static int _php_regcomp(regex_t *preg, const char *pattern, int cflags TSRMLS_DC)
{
int r = 0;
int patlen = strlen(pattern);
reg_cache *rc = NULL;
if (zend_hash_num_elements(&EREG(ht_rc)) >= EREG_CACHE_SIZE) {
/* easier than dealing with overflow as it happens */
if (EREG(lru_counter) >= (1 << 31) || zend_hash_sort(&EREG(ht_rc), zend_qsort, ereg_lru_cmp, 0 TSRMLS_CC) == FAILURE) {
zend_hash_clean(&EREG(ht_rc));
EREG(lru_counter) = 0;
} else {
int num_clean = EREG_CACHE_SIZE / 4;
zend_hash_apply_with_argument(&EREG(ht_rc), ereg_clean_cache, &num_clean TSRMLS_CC);
}
}
if(zend_hash_find(&EREG(ht_rc), (char *) pattern, patlen+1, (void **) &rc) == SUCCESS
&& rc->cflags == cflags) {
#ifdef HAVE_REGEX_T_RE_MAGIC
/*
* We use a saved magic number to see whether cache is corrupted, and if it
* is, we flush it and compile the pattern from scratch.
*/
if (rc->preg.re_magic != reg_magic) {
zend_hash_clean(&EREG(ht_rc));
EREG(lru_counter) = 0;
} else {
memcpy(preg, &rc->preg, sizeof(*preg));
return r;
}
}
r = regcomp(preg, pattern, cflags);
if(!r) {
reg_cache rcp;
rcp.cflags = cflags;
rcp.lastuse = ++(EREG(lru_counter));
memcpy(&rcp.preg, preg, sizeof(*preg));
/*
* Since we don't have access to the actual MAGIC1 definition in the private
* header file, we save the magic value immediately after compilation. Hopefully,
* it's good.
*/
if (!reg_magic) reg_magic = preg->re_magic;
zend_hash_update(&EREG(ht_rc), (char *) pattern, patlen+1,
(void *) &rcp, sizeof(rcp), NULL);
}
#else
memcpy(preg, &rc->preg, sizeof(*preg));
} else {
r = regcomp(preg, pattern, cflags);
if(!r) {
reg_cache rcp;
rcp.cflags = cflags;
rcp.lastuse = ++(EREG(lru_counter));
memcpy(&rcp.preg, preg, sizeof(*preg));
zend_hash_update(&EREG(ht_rc), (char *) pattern, patlen+1,
(void *) &rcp, sizeof(rcp), NULL);
}
}
#endif
return r;
}
/* }}} */
static void _free_ereg_cache(reg_cache *rc)
{
regfree(&rc->preg);
}
#undef regfree
#define regfree(a);
#undef regcomp
#define regcomp(a, b, c) _php_regcomp(a, b, c TSRMLS_CC)
/* {{{ PHP_GINIT_FUNCTION
*/
static PHP_GINIT_FUNCTION(ereg)
{
zend_hash_init(&ereg_globals->ht_rc, 0, NULL, (void (*)(void *)) _free_ereg_cache, 1);
ereg_globals->lru_counter = 0;
}
/* }}} */
/* {{{ PHP_GSHUTDOWN_FUNCTION
*/
static PHP_GSHUTDOWN_FUNCTION(ereg)
{
zend_hash_destroy(&ereg_globals->ht_rc);
}
/* }}} */
PHP_MINFO_FUNCTION(ereg)
{
php_info_print_table_start();
#if HSREGEX
php_info_print_table_row(2, "Regex Library", "Bundled library enabled");
#else
php_info_print_table_row(2, "Regex Library", "System library enabled");
#endif
php_info_print_table_end();
}
/* {{{ php_ereg_eprint
* php_ereg_eprint - convert error number to name
*/
static void php_ereg_eprint(int err, regex_t *re TSRMLS_DC) {
char *buf = NULL, *message = NULL;
size_t len;
size_t buf_len;
#ifdef REG_ITOA
/* get the length of the message */
buf_len = regerror(REG_ITOA | err, re, NULL, 0);
if (buf_len) {
buf = (char *)safe_emalloc(buf_len, sizeof(char), 0);
if (!buf) return; /* fail silently */
/* finally, get the error message */
regerror(REG_ITOA | err, re, buf, buf_len);
}
#else
buf_len = 0;
#endif
len = regerror(err, re, NULL, 0);
if (len) {
message = (char *)safe_emalloc((buf_len + len + 2), sizeof(char), 0);
if (!message) {
return; /* fail silently */
}
if (buf_len) {
snprintf(message, buf_len, "%s: ", buf);
buf_len += 1; /* so pointer math below works */
}
/* drop the message into place */
regerror(err, re, message + buf_len, len);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", message);
}
STR_FREE(buf);
STR_FREE(message);
}
/* }}} */
/* {{{ php_ereg
*/
static void php_ereg(INTERNAL_FUNCTION_PARAMETERS, int icase)
{
zval **regex, /* Regular expression */
**array = NULL; /* Optional register array */
char *findin; /* String to apply expression to */
int findin_len;
regex_t re;
regmatch_t *subs;
int err, match_len, string_len;
uint i;
int copts = 0;
off_t start, end;
char *buf = NULL;
char *string = NULL;
int argc = ZEND_NUM_ARGS();
if (zend_parse_parameters(argc TSRMLS_CC, "Zs|Z", ®ex, &findin, &findin_len, &array) == FAILURE) {
return;
}
if (icase) {
copts |= REG_ICASE;
}
if (argc == 2) {
copts |= REG_NOSUB;
}
/* compile the regular expression from the supplied regex */
if (Z_TYPE_PP(regex) == IS_STRING) {
err = regcomp(&re, Z_STRVAL_PP(regex), REG_EXTENDED | copts);
} else {
/* we convert numbers to integers and treat them as a string */
if (Z_TYPE_PP(regex) == IS_DOUBLE) {
convert_to_long_ex(regex); /* get rid of decimal places */
}
convert_to_string_ex(regex);
/* don't bother doing an extended regex with just a number */
err = regcomp(&re, Z_STRVAL_PP(regex), copts);
}
if (err) {
php_ereg_eprint(err, &re TSRMLS_CC);
RETURN_FALSE;
}
/* make a copy of the string we're looking in */
string = estrndup(findin, findin_len);
/* allocate storage for (sub-)expression-matches */
subs = (regmatch_t *)ecalloc(sizeof(regmatch_t),re.re_nsub+1);
/* actually execute the regular expression */
err = regexec(&re, string, re.re_nsub+1, subs, 0);
if (err && err != REG_NOMATCH) {
php_ereg_eprint(err, &re TSRMLS_CC);
regfree(&re);
efree(subs);
RETURN_FALSE;
}
match_len = 1;
if (array && err != REG_NOMATCH) {
match_len = (int) (subs[0].rm_eo - subs[0].rm_so);
string_len = findin_len + 1;
buf = emalloc(string_len);
zval_dtor(*array); /* start with clean array */
array_init(*array);
for (i = 0; i <= re.re_nsub; i++) {
start = subs[i].rm_so;
end = subs[i].rm_eo;
if (start != -1 && end > 0 && start < string_len && end < string_len && start < end) {
add_index_stringl(*array, i, string+start, end-start, 1);
} else {
add_index_bool(*array, i, 0);
}
}
efree(buf);
}
efree(subs);
efree(string);
if (err == REG_NOMATCH) {
RETVAL_FALSE;
} else {
if (match_len == 0)
match_len = 1;
RETVAL_LONG(match_len);
}
regfree(&re);
}
/* }}} */
/* {{{ proto int ereg(string pattern, string string [, array registers])
Regular expression match */
PHP_FUNCTION(ereg)
{
php_ereg(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ proto int eregi(string pattern, string string [, array registers])
Case-insensitive regular expression match */
PHP_FUNCTION(eregi)
{
php_ereg(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ php_ereg_replace
* this is the meat and potatoes of regex replacement! */
PHP_EREG_API char *php_ereg_replace(const char *pattern, const char *replace, const char *string, int icase, int extended TSRMLS_DC)
{
regex_t re;
regmatch_t *subs;
char *buf, /* buf is where we build the replaced string */
*nbuf, /* nbuf is used when we grow the buffer */
*walkbuf; /* used to walk buf when replacing backrefs */
const char *walk; /* used to walk replacement string for backrefs */
int buf_len;
int pos, tmp, string_len, new_l;
int err, copts = 0;
string_len = strlen(string);
if (icase) {
copts = REG_ICASE;
}
if (extended) {
copts |= REG_EXTENDED;
}
err = regcomp(&re, pattern, copts);
if (err) {
php_ereg_eprint(err, &re TSRMLS_CC);
return ((char *) -1);
}
/* allocate storage for (sub-)expression-matches */
subs = (regmatch_t *)ecalloc(sizeof(regmatch_t),re.re_nsub+1);
/* start with a buffer that is twice the size of the stringo
we're doing replacements in */
buf_len = 2 * string_len + 1;
buf = safe_emalloc(buf_len, sizeof(char), 0);
err = pos = 0;
buf[0] = '\0';
while (!err) {
err = regexec(&re, &string[pos], re.re_nsub+1, subs, (pos ? REG_NOTBOL : 0));
if (err && err != REG_NOMATCH) {
php_ereg_eprint(err, &re TSRMLS_CC);
efree(subs);
efree(buf);
regfree(&re);
return ((char *) -1);
}
if (!err) {
/* backref replacement is done in two passes:
1) find out how long the string will be, and allocate buf
2) copy the part before match, replacement and backrefs to buf
Jaakko Hyvätti <Jaakko.Hyvatti@iki.fi>
*/
new_l = strlen(buf) + subs[0].rm_so; /* part before the match */
walk = replace;
while (*walk) {
if ('\\' == *walk && isdigit((unsigned char)walk[1]) && ((unsigned char)walk[1]) - '0' <= (int)re.re_nsub) {
if (subs[walk[1] - '0'].rm_so > -1 && subs[walk[1] - '0'].rm_eo > -1) {
new_l += subs[walk[1] - '0'].rm_eo - subs[walk[1] - '0'].rm_so;
}
walk += 2;
} else {
new_l++;
walk++;
}
}
if (new_l + 1 > buf_len) {
buf_len = 1 + buf_len + 2 * new_l;
nbuf = emalloc(buf_len);
strncpy(nbuf, buf, buf_len - 1);
nbuf[buf_len - 1] = '\0';
efree(buf);
buf = nbuf;
}
tmp = strlen(buf);
/* copy the part of the string before the match */
strncat(buf, &string[pos], subs[0].rm_so);
/* copy replacement and backrefs */
walkbuf = &buf[tmp + subs[0].rm_so];
walk = replace;
while (*walk) {
if ('\\' == *walk && isdigit((unsigned char)walk[1]) && (unsigned char)walk[1] - '0' <= (int)re.re_nsub) {
if (subs[walk[1] - '0'].rm_so > -1 && subs[walk[1] - '0'].rm_eo > -1
/* this next case shouldn't happen. it does. */
&& subs[walk[1] - '0'].rm_so <= subs[walk[1] - '0'].rm_eo) {
tmp = subs[walk[1] - '0'].rm_eo - subs[walk[1] - '0'].rm_so;
memcpy (walkbuf, &string[pos + subs[walk[1] - '0'].rm_so], tmp);
walkbuf += tmp;
}
walk += 2;
} else {
*walkbuf++ = *walk++;
}
}
*walkbuf = '\0';
/* and get ready to keep looking for replacements */
if (subs[0].rm_so == subs[0].rm_eo) {
if (subs[0].rm_so + pos >= string_len) {
break;
}
new_l = strlen (buf) + 1;
if (new_l + 1 > buf_len) {
buf_len = 1 + buf_len + 2 * new_l;
nbuf = safe_emalloc(buf_len, sizeof(char), 0);
strncpy(nbuf, buf, buf_len-1);
efree(buf);
buf = nbuf;
}
pos += subs[0].rm_eo + 1;
buf [new_l-1] = string [pos-1];
buf [new_l] = '\0';
} else {
pos += subs[0].rm_eo;
}
} else { /* REG_NOMATCH */
new_l = strlen(buf) + strlen(&string[pos]);
if (new_l + 1 > buf_len) {
buf_len = new_l + 1; /* now we know exactly how long it is */
nbuf = safe_emalloc(buf_len, sizeof(char), 0);
strncpy(nbuf, buf, buf_len-1);
efree(buf);
buf = nbuf;
}
/* stick that last bit of string on our output */
strlcat(buf, &string[pos], buf_len);
}
}
/* don't want to leak memory .. */
efree(subs);
regfree(&re);
/* whew. */
return (buf);
}
/* }}} */
/* {{{ php_do_ereg_replace
*/
static void php_do_ereg_replace(INTERNAL_FUNCTION_PARAMETERS, int icase)
{
zval **arg_pattern,
**arg_replace;
char *pattern, *arg_string;
char *string;
char *replace;
char *ret;
int arg_string_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ZZs", &arg_pattern, &arg_replace, &arg_string, &arg_string_len) == FAILURE) {
return;
}
if (Z_TYPE_PP(arg_pattern) == IS_STRING) {
if (Z_STRVAL_PP(arg_pattern) && Z_STRLEN_PP(arg_pattern)) {
pattern = estrndup(Z_STRVAL_PP(arg_pattern), Z_STRLEN_PP(arg_pattern));
} else {
pattern = STR_EMPTY_ALLOC();
}
} else {
convert_to_long_ex(arg_pattern);
pattern = emalloc(2);
pattern[0] = (char) Z_LVAL_PP(arg_pattern);
pattern[1] = '\0';
}
if (Z_TYPE_PP(arg_replace) == IS_STRING) {
if (Z_STRVAL_PP(arg_replace) && Z_STRLEN_PP(arg_replace)) {
replace = estrndup(Z_STRVAL_PP(arg_replace), Z_STRLEN_PP(arg_replace));
} else {
replace = STR_EMPTY_ALLOC();
}
} else {
convert_to_long_ex(arg_replace);
replace = emalloc(2);
replace[0] = (char) Z_LVAL_PP(arg_replace);
replace[1] = '\0';
}
if (arg_string && arg_string_len) {
string = estrndup(arg_string, arg_string_len);
} else {
string = STR_EMPTY_ALLOC();
}
/* do the actual work */
ret = php_ereg_replace(pattern, replace, string, icase, 1 TSRMLS_CC);
if (ret == (char *) -1) {
RETVAL_FALSE;
} else {
RETVAL_STRING(ret, 1);
STR_FREE(ret);
}
STR_FREE(string);
STR_FREE(replace);
STR_FREE(pattern);
}
/* }}} */
/* {{{ proto string ereg_replace(string pattern, string replacement, string string)
Replace regular expression */
PHP_FUNCTION(ereg_replace)
{
php_do_ereg_replace(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ proto string eregi_replace(string pattern, string replacement, string string)
Case insensitive replace regular expression */
PHP_FUNCTION(eregi_replace)
{
php_do_ereg_replace(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ php_split
*/
static void php_split(INTERNAL_FUNCTION_PARAMETERS, int icase)
{
long count = -1;
regex_t re;
regmatch_t subs[1];
char *spliton, *str, *strp, *endp;
int spliton_len, str_len;
int err, size, copts = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|l", &spliton, &spliton_len, &str, &str_len, &count) == FAILURE) {
return;
}
if (icase) {
copts = REG_ICASE;
}
strp = str;
endp = strp + str_len;
err = regcomp(&re, spliton, REG_EXTENDED | copts);
if (err) {
php_ereg_eprint(err, &re TSRMLS_CC);
RETURN_FALSE;
}
array_init(return_value);
/* churn through str, generating array entries as we go */
while ((count == -1 || count > 1) && !(err = regexec(&re, strp, 1, subs, 0))) {
if (subs[0].rm_so == 0 && subs[0].rm_eo) {
/* match is at start of string, return empty string */
add_next_index_stringl(return_value, "", 0, 1);
/* skip ahead the length of the regex match */
strp += subs[0].rm_eo;
} else if (subs[0].rm_so == 0 && subs[0].rm_eo == 0) {
/* No more matches */
regfree(&re);
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid Regular Expression");
zend_hash_destroy(Z_ARRVAL_P(return_value));
efree(Z_ARRVAL_P(return_value));
RETURN_FALSE;
} else {
/* On a real match */
/* make a copy of the substring */
size = subs[0].rm_so;
/* add it to the array */
add_next_index_stringl(return_value, strp, size, 1);
/* point at our new starting point */
strp = strp + subs[0].rm_eo;
}
/* if we're only looking for a certain number of points,
stop looking once we hit it */
if (count != -1) {
count--;
}
}
/* see if we encountered an error */
if (err && err != REG_NOMATCH) {
php_ereg_eprint(err, &re TSRMLS_CC);
regfree(&re);
zend_hash_destroy(Z_ARRVAL_P(return_value));
efree(Z_ARRVAL_P(return_value));
RETURN_FALSE;
}
/* otherwise we just have one last element to add to the array */
size = endp - strp;
add_next_index_stringl(return_value, strp, size, 1);
regfree(&re);
}
/* }}} */
/* {{{ proto array split(string pattern, string string [, int limit])
Split string into array by regular expression */
PHP_FUNCTION(split)
{
php_split(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ proto array spliti(string pattern, string string [, int limit])
Split string into array by regular expression case-insensitive */
PHP_FUNCTION(spliti)
{
php_split(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ proto string sql_regcase(string string)
Make regular expression for case insensitive match */
PHP_EREG_API PHP_FUNCTION(sql_regcase)
{
char *string, *tmp;
int string_len;
unsigned char c;
register int i, j;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &string, &string_len) == FAILURE) {
return;
}
tmp = safe_emalloc(string_len, 4, 1);
for (i = j = 0; i < string_len; i++) {
c = (unsigned char) string[i];
if (isalpha(c)) {
tmp[j++] = '[';
tmp[j++] = toupper(c);
tmp[j++] = tolower(c);
tmp[j++] = ']';
} else {
tmp[j++] = c;
}
}
tmp[j] = 0;
RETVAL_STRINGL(tmp, j, 1);
efree(tmp);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
|