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1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2012 The PHP Group |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 3.01 of the PHP license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.php.net/license/3_01.txt |
11: | If you did not receive a copy of the PHP license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@php.net so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Rasmus Lerdorf <rasmus@php.net> |
16: | Jim Winstead <jimw@php.net> |
17: | Jaakko Hyvätti <jaakko@hyvatti.iki.fi> |
18: +----------------------------------------------------------------------+
19: */
1.1.1.2 ! misho 20: /* $Id$ */
1.1 misho 21:
22: #include <stdio.h>
23: #include <ctype.h>
24: #include "php.h"
25: #include "ext/standard/php_string.h"
26: #include "php_ereg.h"
27: #include "ext/standard/info.h"
28:
29: /* {{{ arginfo */
30: ZEND_BEGIN_ARG_INFO_EX(arginfo_ereg, 0, 0, 2)
31: ZEND_ARG_INFO(0, pattern)
32: ZEND_ARG_INFO(0, string)
33: ZEND_ARG_INFO(1, registers) /* ARRAY_INFO(1, registers, 1) */
34: ZEND_END_ARG_INFO()
35:
36: ZEND_BEGIN_ARG_INFO(arginfo_ereg_replace, 0)
37: ZEND_ARG_INFO(0, pattern)
38: ZEND_ARG_INFO(0, replacement)
39: ZEND_ARG_INFO(0, string)
40: ZEND_END_ARG_INFO()
41:
42: ZEND_BEGIN_ARG_INFO_EX(arginfo_split, 0, 0, 2)
43: ZEND_ARG_INFO(0, pattern)
44: ZEND_ARG_INFO(0, string)
45: ZEND_ARG_INFO(0, limit)
46: ZEND_END_ARG_INFO()
47:
48: ZEND_BEGIN_ARG_INFO(arginfo_sql_regcase, 0)
49: ZEND_ARG_INFO(0, string)
50: ZEND_END_ARG_INFO()
51: /* }}} */
52:
53: /* {{{ Function table */
54: const zend_function_entry ereg_functions[] = {
55: PHP_DEP_FE(ereg, arginfo_ereg)
56: PHP_DEP_FE(ereg_replace, arginfo_ereg_replace)
57: PHP_DEP_FE(eregi, arginfo_ereg)
58: PHP_DEP_FE(eregi_replace, arginfo_ereg_replace)
59: PHP_DEP_FE(split, arginfo_split)
60: PHP_DEP_FE(spliti, arginfo_split)
61: PHP_DEP_FE(sql_regcase, arginfo_sql_regcase)
62: PHP_FE_END
63: };
64: /* }}} */
65:
66: /* {{{ reg_cache */
67: typedef struct {
68: regex_t preg;
69: int cflags;
70: unsigned long lastuse;
71: } reg_cache;
72: static int reg_magic = 0;
73: #define EREG_CACHE_SIZE 4096
74: /* }}} */
75:
76: ZEND_DECLARE_MODULE_GLOBALS(ereg)
1.1.1.2 ! misho 77: static PHP_GINIT_FUNCTION(ereg);
! 78: static PHP_GSHUTDOWN_FUNCTION(ereg);
1.1 misho 79:
80: /* {{{ Module entry */
81: zend_module_entry ereg_module_entry = {
82: STANDARD_MODULE_HEADER,
83: "ereg",
84: ereg_functions,
1.1.1.2 ! misho 85: NULL,
! 86: NULL,
1.1 misho 87: NULL,
88: NULL,
89: PHP_MINFO(ereg),
90: NO_VERSION_YET,
1.1.1.2 ! misho 91: PHP_MODULE_GLOBALS(ereg),
! 92: PHP_GINIT(ereg),
! 93: PHP_GSHUTDOWN(ereg),
! 94: NULL,
! 95: STANDARD_MODULE_PROPERTIES_EX
1.1 misho 96: };
97: /* }}} */
98:
1.1.1.2 ! misho 99: /* {{{ COMPILE_DL_EREG */
! 100: #ifdef COMPILE_DL_EREG
! 101: ZEND_GET_MODULE(ereg)
! 102: #endif
! 103: /* }}} */
! 104:
1.1 misho 105: /* {{{ ereg_lru_cmp */
106: static int ereg_lru_cmp(const void *a, const void *b TSRMLS_DC)
107: {
108: Bucket *f = *((Bucket **) a);
109: Bucket *s = *((Bucket **) b);
110:
111: if (((reg_cache *)f->pData)->lastuse <
112: ((reg_cache *)s->pData)->lastuse) {
113: return -1;
114: } else if (((reg_cache *)f->pData)->lastuse ==
115: ((reg_cache *)s->pData)->lastuse) {
116: return 0;
117: } else {
118: return 1;
119: }
120: }
121: /* }}} */
122:
123: /* {{{ static ereg_clean_cache */
124: static int ereg_clean_cache(void *data, void *arg TSRMLS_DC)
125: {
126: int *num_clean = (int *)arg;
127:
128: if (*num_clean > 0) {
129: (*num_clean)--;
130: return ZEND_HASH_APPLY_REMOVE;
131: } else {
132: return ZEND_HASH_APPLY_STOP;
133: }
134: }
135: /* }}} */
136:
137: /* {{{ _php_regcomp
138: */
1.1.1.2 ! misho 139: static int _php_regcomp(regex_t *preg, const char *pattern, int cflags TSRMLS_DC)
1.1 misho 140: {
141: int r = 0;
142: int patlen = strlen(pattern);
143: reg_cache *rc = NULL;
144:
145: if (zend_hash_num_elements(&EREG(ht_rc)) >= EREG_CACHE_SIZE) {
146: /* easier than dealing with overflow as it happens */
147: if (EREG(lru_counter) >= (1 << 31) || zend_hash_sort(&EREG(ht_rc), zend_qsort, ereg_lru_cmp, 0 TSRMLS_CC) == FAILURE) {
148: zend_hash_clean(&EREG(ht_rc));
149: EREG(lru_counter) = 0;
150: } else {
151: int num_clean = EREG_CACHE_SIZE / 4;
152: zend_hash_apply_with_argument(&EREG(ht_rc), ereg_clean_cache, &num_clean TSRMLS_CC);
153: }
154: }
155:
156: if(zend_hash_find(&EREG(ht_rc), (char *) pattern, patlen+1, (void **) &rc) == SUCCESS
157: && rc->cflags == cflags) {
158: #ifdef HAVE_REGEX_T_RE_MAGIC
159: /*
160: * We use a saved magic number to see whether cache is corrupted, and if it
161: * is, we flush it and compile the pattern from scratch.
162: */
163: if (rc->preg.re_magic != reg_magic) {
164: zend_hash_clean(&EREG(ht_rc));
165: EREG(lru_counter) = 0;
166: } else {
167: memcpy(preg, &rc->preg, sizeof(*preg));
168: return r;
169: }
170: }
171:
172: r = regcomp(preg, pattern, cflags);
173: if(!r) {
174: reg_cache rcp;
175:
176: rcp.cflags = cflags;
177: rcp.lastuse = ++(EREG(lru_counter));
178: memcpy(&rcp.preg, preg, sizeof(*preg));
179: /*
180: * Since we don't have access to the actual MAGIC1 definition in the private
181: * header file, we save the magic value immediately after compilation. Hopefully,
182: * it's good.
183: */
184: if (!reg_magic) reg_magic = preg->re_magic;
185: zend_hash_update(&EREG(ht_rc), (char *) pattern, patlen+1,
186: (void *) &rcp, sizeof(rcp), NULL);
187: }
188: #else
189: memcpy(preg, &rc->preg, sizeof(*preg));
190: } else {
191: r = regcomp(preg, pattern, cflags);
192: if(!r) {
193: reg_cache rcp;
194:
195: rcp.cflags = cflags;
196: rcp.lastuse = ++(EREG(lru_counter));
197: memcpy(&rcp.preg, preg, sizeof(*preg));
198: zend_hash_update(&EREG(ht_rc), (char *) pattern, patlen+1,
199: (void *) &rcp, sizeof(rcp), NULL);
200: }
201: }
202: #endif
203: return r;
204: }
205: /* }}} */
206:
207: static void _free_ereg_cache(reg_cache *rc)
208: {
209: regfree(&rc->preg);
210: }
211:
212: #undef regfree
213: #define regfree(a);
214: #undef regcomp
1.1.1.2 ! misho 215: #define regcomp(a, b, c) _php_regcomp(a, b, c TSRMLS_CC)
! 216:
! 217: /* {{{ PHP_GINIT_FUNCTION
! 218: */
! 219: static PHP_GINIT_FUNCTION(ereg)
1.1 misho 220: {
221: zend_hash_init(&ereg_globals->ht_rc, 0, NULL, (void (*)(void *)) _free_ereg_cache, 1);
222: ereg_globals->lru_counter = 0;
223: }
1.1.1.2 ! misho 224: /* }}} */
1.1 misho 225:
1.1.1.2 ! misho 226: /* {{{ PHP_GSHUTDOWN_FUNCTION
! 227: */
! 228: static PHP_GSHUTDOWN_FUNCTION(ereg)
1.1 misho 229: {
230: zend_hash_destroy(&ereg_globals->ht_rc);
231: }
1.1.1.2 ! misho 232: /* }}} */
1.1 misho 233:
234: PHP_MINFO_FUNCTION(ereg)
235: {
236: php_info_print_table_start();
237: #if HSREGEX
238: php_info_print_table_row(2, "Regex Library", "Bundled library enabled");
239: #else
240: php_info_print_table_row(2, "Regex Library", "System library enabled");
241: #endif
242: php_info_print_table_end();
243: }
244:
245:
246: /* {{{ php_ereg_eprint
247: * php_ereg_eprint - convert error number to name
248: */
1.1.1.2 ! misho 249: static void php_ereg_eprint(int err, regex_t *re TSRMLS_DC) {
1.1 misho 250: char *buf = NULL, *message = NULL;
251: size_t len;
252: size_t buf_len;
253:
254: #ifdef REG_ITOA
255: /* get the length of the message */
256: buf_len = regerror(REG_ITOA | err, re, NULL, 0);
257: if (buf_len) {
258: buf = (char *)safe_emalloc(buf_len, sizeof(char), 0);
259: if (!buf) return; /* fail silently */
260: /* finally, get the error message */
261: regerror(REG_ITOA | err, re, buf, buf_len);
262: }
263: #else
264: buf_len = 0;
265: #endif
266: len = regerror(err, re, NULL, 0);
267: if (len) {
268: message = (char *)safe_emalloc((buf_len + len + 2), sizeof(char), 0);
269: if (!message) {
270: return; /* fail silently */
271: }
272: if (buf_len) {
273: snprintf(message, buf_len, "%s: ", buf);
274: buf_len += 1; /* so pointer math below works */
275: }
276: /* drop the message into place */
277: regerror(err, re, message + buf_len, len);
278:
279: php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", message);
280: }
281:
282: STR_FREE(buf);
283: STR_FREE(message);
284: }
285: /* }}} */
286:
287: /* {{{ php_ereg
288: */
289: static void php_ereg(INTERNAL_FUNCTION_PARAMETERS, int icase)
290: {
291: zval **regex, /* Regular expression */
292: **array = NULL; /* Optional register array */
293: char *findin; /* String to apply expression to */
294: int findin_len;
295: regex_t re;
296: regmatch_t *subs;
297: int err, match_len, string_len;
298: uint i;
299: int copts = 0;
300: off_t start, end;
301: char *buf = NULL;
302: char *string = NULL;
303: int argc = ZEND_NUM_ARGS();
304:
305: if (zend_parse_parameters(argc TSRMLS_CC, "Zs|Z", ®ex, &findin, &findin_len, &array) == FAILURE) {
306: return;
307: }
308:
309: if (icase) {
310: copts |= REG_ICASE;
311: }
312:
313: if (argc == 2) {
314: copts |= REG_NOSUB;
315: }
316:
317: /* compile the regular expression from the supplied regex */
318: if (Z_TYPE_PP(regex) == IS_STRING) {
319: err = regcomp(&re, Z_STRVAL_PP(regex), REG_EXTENDED | copts);
320: } else {
321: /* we convert numbers to integers and treat them as a string */
322: if (Z_TYPE_PP(regex) == IS_DOUBLE) {
323: convert_to_long_ex(regex); /* get rid of decimal places */
324: }
325: convert_to_string_ex(regex);
326: /* don't bother doing an extended regex with just a number */
327: err = regcomp(&re, Z_STRVAL_PP(regex), copts);
328: }
329:
330: if (err) {
1.1.1.2 ! misho 331: php_ereg_eprint(err, &re TSRMLS_CC);
1.1 misho 332: RETURN_FALSE;
333: }
334:
335: /* make a copy of the string we're looking in */
336: string = estrndup(findin, findin_len);
337:
338: /* allocate storage for (sub-)expression-matches */
339: subs = (regmatch_t *)ecalloc(sizeof(regmatch_t),re.re_nsub+1);
340:
341: /* actually execute the regular expression */
342: err = regexec(&re, string, re.re_nsub+1, subs, 0);
343: if (err && err != REG_NOMATCH) {
1.1.1.2 ! misho 344: php_ereg_eprint(err, &re TSRMLS_CC);
1.1 misho 345: regfree(&re);
346: efree(subs);
347: RETURN_FALSE;
348: }
349: match_len = 1;
350:
351: if (array && err != REG_NOMATCH) {
352: match_len = (int) (subs[0].rm_eo - subs[0].rm_so);
353: string_len = findin_len + 1;
354:
355: buf = emalloc(string_len);
356:
357: zval_dtor(*array); /* start with clean array */
358: array_init(*array);
359:
360: for (i = 0; i <= re.re_nsub; i++) {
361: start = subs[i].rm_so;
362: end = subs[i].rm_eo;
363: if (start != -1 && end > 0 && start < string_len && end < string_len && start < end) {
364: add_index_stringl(*array, i, string+start, end-start, 1);
365: } else {
366: add_index_bool(*array, i, 0);
367: }
368: }
369: efree(buf);
370: }
371:
372: efree(subs);
373: efree(string);
374: if (err == REG_NOMATCH) {
375: RETVAL_FALSE;
376: } else {
377: if (match_len == 0)
378: match_len = 1;
379: RETVAL_LONG(match_len);
380: }
381: regfree(&re);
382: }
383: /* }}} */
384:
385: /* {{{ proto int ereg(string pattern, string string [, array registers])
386: Regular expression match */
387: PHP_FUNCTION(ereg)
388: {
389: php_ereg(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
390: }
391: /* }}} */
392:
393: /* {{{ proto int eregi(string pattern, string string [, array registers])
394: Case-insensitive regular expression match */
395: PHP_FUNCTION(eregi)
396: {
397: php_ereg(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
398: }
399: /* }}} */
400:
401: /* {{{ php_ereg_replace
402: * this is the meat and potatoes of regex replacement! */
1.1.1.2 ! misho 403: PHP_EREG_API char *php_ereg_replace(const char *pattern, const char *replace, const char *string, int icase, int extended TSRMLS_DC)
1.1 misho 404: {
405: regex_t re;
406: regmatch_t *subs;
407:
408: char *buf, /* buf is where we build the replaced string */
409: *nbuf, /* nbuf is used when we grow the buffer */
410: *walkbuf; /* used to walk buf when replacing backrefs */
411: const char *walk; /* used to walk replacement string for backrefs */
412: int buf_len;
413: int pos, tmp, string_len, new_l;
414: int err, copts = 0;
415:
416: string_len = strlen(string);
417:
418: if (icase) {
419: copts = REG_ICASE;
420: }
421: if (extended) {
422: copts |= REG_EXTENDED;
423: }
424:
425: err = regcomp(&re, pattern, copts);
426: if (err) {
1.1.1.2 ! misho 427: php_ereg_eprint(err, &re TSRMLS_CC);
1.1 misho 428: return ((char *) -1);
429: }
430:
431:
432: /* allocate storage for (sub-)expression-matches */
433: subs = (regmatch_t *)ecalloc(sizeof(regmatch_t),re.re_nsub+1);
434:
435: /* start with a buffer that is twice the size of the stringo
436: we're doing replacements in */
437: buf_len = 2 * string_len + 1;
438: buf = safe_emalloc(buf_len, sizeof(char), 0);
439:
440: err = pos = 0;
441: buf[0] = '\0';
442: while (!err) {
443: err = regexec(&re, &string[pos], re.re_nsub+1, subs, (pos ? REG_NOTBOL : 0));
444:
445: if (err && err != REG_NOMATCH) {
1.1.1.2 ! misho 446: php_ereg_eprint(err, &re TSRMLS_CC);
1.1 misho 447: efree(subs);
448: efree(buf);
449: regfree(&re);
450: return ((char *) -1);
451: }
452:
453: if (!err) {
454: /* backref replacement is done in two passes:
455: 1) find out how long the string will be, and allocate buf
456: 2) copy the part before match, replacement and backrefs to buf
457:
458: Jaakko Hyvätti <Jaakko.Hyvatti@iki.fi>
459: */
460:
461: new_l = strlen(buf) + subs[0].rm_so; /* part before the match */
462: walk = replace;
463: while (*walk) {
464: if ('\\' == *walk && isdigit((unsigned char)walk[1]) && ((unsigned char)walk[1]) - '0' <= (int)re.re_nsub) {
465: if (subs[walk[1] - '0'].rm_so > -1 && subs[walk[1] - '0'].rm_eo > -1) {
466: new_l += subs[walk[1] - '0'].rm_eo - subs[walk[1] - '0'].rm_so;
467: }
468: walk += 2;
469: } else {
470: new_l++;
471: walk++;
472: }
473: }
474: if (new_l + 1 > buf_len) {
475: buf_len = 1 + buf_len + 2 * new_l;
476: nbuf = emalloc(buf_len);
1.1.1.2 ! misho 477: strncpy(nbuf, buf, buf_len - 1);
1.1 misho 478: nbuf[buf_len - 1] = '\0';
479: efree(buf);
480: buf = nbuf;
481: }
482: tmp = strlen(buf);
483: /* copy the part of the string before the match */
484: strncat(buf, &string[pos], subs[0].rm_so);
485:
486: /* copy replacement and backrefs */
487: walkbuf = &buf[tmp + subs[0].rm_so];
488: walk = replace;
489: while (*walk) {
1.1.1.2 ! misho 490: if ('\\' == *walk && isdigit((unsigned char)walk[1]) && (unsigned char)walk[1] - '0' <= (int)re.re_nsub) {
1.1 misho 491: if (subs[walk[1] - '0'].rm_so > -1 && subs[walk[1] - '0'].rm_eo > -1
492: /* this next case shouldn't happen. it does. */
493: && subs[walk[1] - '0'].rm_so <= subs[walk[1] - '0'].rm_eo) {
494:
495: tmp = subs[walk[1] - '0'].rm_eo - subs[walk[1] - '0'].rm_so;
496: memcpy (walkbuf, &string[pos + subs[walk[1] - '0'].rm_so], tmp);
497: walkbuf += tmp;
498: }
499: walk += 2;
500: } else {
501: *walkbuf++ = *walk++;
502: }
503: }
504: *walkbuf = '\0';
505:
506: /* and get ready to keep looking for replacements */
507: if (subs[0].rm_so == subs[0].rm_eo) {
508: if (subs[0].rm_so + pos >= string_len) {
509: break;
510: }
511: new_l = strlen (buf) + 1;
512: if (new_l + 1 > buf_len) {
513: buf_len = 1 + buf_len + 2 * new_l;
514: nbuf = safe_emalloc(buf_len, sizeof(char), 0);
515: strncpy(nbuf, buf, buf_len-1);
516: efree(buf);
517: buf = nbuf;
518: }
519: pos += subs[0].rm_eo + 1;
520: buf [new_l-1] = string [pos-1];
521: buf [new_l] = '\0';
522: } else {
523: pos += subs[0].rm_eo;
524: }
525: } else { /* REG_NOMATCH */
526: new_l = strlen(buf) + strlen(&string[pos]);
527: if (new_l + 1 > buf_len) {
528: buf_len = new_l + 1; /* now we know exactly how long it is */
529: nbuf = safe_emalloc(buf_len, sizeof(char), 0);
530: strncpy(nbuf, buf, buf_len-1);
531: efree(buf);
532: buf = nbuf;
533: }
534: /* stick that last bit of string on our output */
535: strlcat(buf, &string[pos], buf_len);
536: }
537: }
538:
539: /* don't want to leak memory .. */
540: efree(subs);
541: regfree(&re);
542:
543: /* whew. */
544: return (buf);
545: }
546: /* }}} */
547:
548: /* {{{ php_do_ereg_replace
549: */
550: static void php_do_ereg_replace(INTERNAL_FUNCTION_PARAMETERS, int icase)
551: {
552: zval **arg_pattern,
553: **arg_replace;
554: char *pattern, *arg_string;
555: char *string;
556: char *replace;
557: char *ret;
558: int arg_string_len;
559:
560: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ZZs", &arg_pattern, &arg_replace, &arg_string, &arg_string_len) == FAILURE) {
561: return;
562: }
563:
564: if (Z_TYPE_PP(arg_pattern) == IS_STRING) {
565: if (Z_STRVAL_PP(arg_pattern) && Z_STRLEN_PP(arg_pattern)) {
566: pattern = estrndup(Z_STRVAL_PP(arg_pattern), Z_STRLEN_PP(arg_pattern));
567: } else {
568: pattern = STR_EMPTY_ALLOC();
569: }
570: } else {
571: convert_to_long_ex(arg_pattern);
572: pattern = emalloc(2);
573: pattern[0] = (char) Z_LVAL_PP(arg_pattern);
574: pattern[1] = '\0';
575: }
576:
577: if (Z_TYPE_PP(arg_replace) == IS_STRING) {
578: if (Z_STRVAL_PP(arg_replace) && Z_STRLEN_PP(arg_replace)) {
579: replace = estrndup(Z_STRVAL_PP(arg_replace), Z_STRLEN_PP(arg_replace));
580: } else {
581: replace = STR_EMPTY_ALLOC();
582: }
583: } else {
584: convert_to_long_ex(arg_replace);
585: replace = emalloc(2);
586: replace[0] = (char) Z_LVAL_PP(arg_replace);
587: replace[1] = '\0';
588: }
589:
590: if (arg_string && arg_string_len) {
591: string = estrndup(arg_string, arg_string_len);
592: } else {
593: string = STR_EMPTY_ALLOC();
594: }
595:
596: /* do the actual work */
1.1.1.2 ! misho 597: ret = php_ereg_replace(pattern, replace, string, icase, 1 TSRMLS_CC);
1.1 misho 598: if (ret == (char *) -1) {
599: RETVAL_FALSE;
600: } else {
601: RETVAL_STRING(ret, 1);
602: STR_FREE(ret);
603: }
604:
605: STR_FREE(string);
606: STR_FREE(replace);
607: STR_FREE(pattern);
608: }
609: /* }}} */
610:
611: /* {{{ proto string ereg_replace(string pattern, string replacement, string string)
612: Replace regular expression */
613: PHP_FUNCTION(ereg_replace)
614: {
615: php_do_ereg_replace(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
616: }
617: /* }}} */
618:
619: /* {{{ proto string eregi_replace(string pattern, string replacement, string string)
620: Case insensitive replace regular expression */
621: PHP_FUNCTION(eregi_replace)
622: {
623: php_do_ereg_replace(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
624: }
625: /* }}} */
626:
627: /* {{{ php_split
628: */
629: static void php_split(INTERNAL_FUNCTION_PARAMETERS, int icase)
630: {
631: long count = -1;
632: regex_t re;
633: regmatch_t subs[1];
634: char *spliton, *str, *strp, *endp;
635: int spliton_len, str_len;
636: int err, size, copts = 0;
637:
638: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|l", &spliton, &spliton_len, &str, &str_len, &count) == FAILURE) {
639: return;
640: }
641:
642: if (icase) {
643: copts = REG_ICASE;
644: }
645:
646: strp = str;
647: endp = strp + str_len;
648:
649: err = regcomp(&re, spliton, REG_EXTENDED | copts);
650: if (err) {
1.1.1.2 ! misho 651: php_ereg_eprint(err, &re TSRMLS_CC);
1.1 misho 652: RETURN_FALSE;
653: }
654:
655: array_init(return_value);
656:
657: /* churn through str, generating array entries as we go */
658: while ((count == -1 || count > 1) && !(err = regexec(&re, strp, 1, subs, 0))) {
659: if (subs[0].rm_so == 0 && subs[0].rm_eo) {
660: /* match is at start of string, return empty string */
661: add_next_index_stringl(return_value, "", 0, 1);
662: /* skip ahead the length of the regex match */
663: strp += subs[0].rm_eo;
664: } else if (subs[0].rm_so == 0 && subs[0].rm_eo == 0) {
665: /* No more matches */
666: regfree(&re);
667:
668: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid Regular Expression");
669:
670: zend_hash_destroy(Z_ARRVAL_P(return_value));
671: efree(Z_ARRVAL_P(return_value));
672: RETURN_FALSE;
673: } else {
674: /* On a real match */
675:
676: /* make a copy of the substring */
677: size = subs[0].rm_so;
678:
679: /* add it to the array */
680: add_next_index_stringl(return_value, strp, size, 1);
681:
682: /* point at our new starting point */
683: strp = strp + subs[0].rm_eo;
684: }
685:
686: /* if we're only looking for a certain number of points,
687: stop looking once we hit it */
688: if (count != -1) {
689: count--;
690: }
691: }
692:
693: /* see if we encountered an error */
694: if (err && err != REG_NOMATCH) {
1.1.1.2 ! misho 695: php_ereg_eprint(err, &re TSRMLS_CC);
1.1 misho 696: regfree(&re);
697: zend_hash_destroy(Z_ARRVAL_P(return_value));
698: efree(Z_ARRVAL_P(return_value));
699: RETURN_FALSE;
700: }
701:
702: /* otherwise we just have one last element to add to the array */
703: size = endp - strp;
704:
705: add_next_index_stringl(return_value, strp, size, 1);
706:
707: regfree(&re);
708: }
709: /* }}} */
710:
711: /* {{{ proto array split(string pattern, string string [, int limit])
712: Split string into array by regular expression */
713: PHP_FUNCTION(split)
714: {
715: php_split(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
716: }
717: /* }}} */
718:
719: /* {{{ proto array spliti(string pattern, string string [, int limit])
720: Split string into array by regular expression case-insensitive */
721:
722: PHP_FUNCTION(spliti)
723: {
724: php_split(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
725: }
726:
727: /* }}} */
728:
729: /* {{{ proto string sql_regcase(string string)
730: Make regular expression for case insensitive match */
1.1.1.2 ! misho 731: PHP_EREG_API PHP_FUNCTION(sql_regcase)
1.1 misho 732: {
733: char *string, *tmp;
734: int string_len;
735: unsigned char c;
736: register int i, j;
737:
738: if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &string, &string_len) == FAILURE) {
739: return;
740: }
741:
742: tmp = safe_emalloc(string_len, 4, 1);
743:
744: for (i = j = 0; i < string_len; i++) {
745: c = (unsigned char) string[i];
746: if (isalpha(c)) {
747: tmp[j++] = '[';
748: tmp[j++] = toupper(c);
749: tmp[j++] = tolower(c);
750: tmp[j++] = ']';
751: } else {
752: tmp[j++] = c;
753: }
754: }
755: tmp[j] = 0;
756:
757: RETVAL_STRINGL(tmp, j, 1);
758: efree(tmp);
759: }
760: /* }}} */
761:
762: /*
763: * Local variables:
764: * tab-width: 4
765: * c-basic-offset: 4
766: * End:
767: * vim600: noet sw=4 ts=4 fdm=marker
768: * vim<600: noet sw=4 ts=4
769: */