Line data Source code
1 : /*
2 : * SPDX-License-Identifier: MPL-2.0
3 : *
4 : * This Source Code Form is subject to the terms of the Mozilla Public
5 : * License, v. 2.0. If a copy of the MPL was not distributed with this
6 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
7 : *
8 : * Copyright 2024 MonetDB Foundation;
9 : * Copyright August 2008 - 2023 MonetDB B.V.;
10 : * Copyright 1997 - July 2008 CWI.
11 : */
12 :
13 : /*
14 : * N. Nes
15 : * PCRE library interface
16 : * The PCRE library is a set of functions that implement regular
17 : * expression pattern matching using the same syntax and semantics as Perl,
18 : * with just a few differences. The current implementation of PCRE
19 : * (release 4.x) corresponds approximately with Perl 5.8, including support
20 : * for UTF-8 encoded strings. However, this support has to be
21 : * explicitly enabled; it is not the default.
22 : *
23 : * ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre
24 : */
25 : #include "monetdb_config.h"
26 : #include <string.h>
27 :
28 : #include "mal.h"
29 : #include "mal_client.h"
30 : #include "mal_interpreter.h"
31 : #include "mal_exception.h"
32 :
33 : #include <wchar.h>
34 : #include <wctype.h>
35 :
36 : #ifdef HAVE_LIBPCRE
37 : #include <pcre.h>
38 : #ifndef PCRE_STUDY_JIT_COMPILE
39 : /* old library version on e.g. EPEL 6 */
40 : #define pcre_free_study(x) pcre_free(x)
41 : #define PCRE_STUDY_JIT_COMPILE 0
42 : #endif
43 : #define JIT_COMPILE_MIN 1024 /* when to try JIT compilation of patterns */
44 :
45 : #else
46 :
47 : #include <regex.h>
48 :
49 : typedef regex_t pcre;
50 : #endif
51 :
52 : /* current implementation assumes simple %keyword% [keyw%]* */
53 : struct RE {
54 : char *k;
55 : bool search:1, atend:1, case_ignore:1;
56 : size_t skip; /* number of codepoints to skip before matching */
57 : size_t len; /* number of bytes in string */
58 : size_t ulen; /* number of codepoints in string */
59 : struct RE *n;
60 : };
61 :
62 : /* We cannot use strcasecmp and strncasecmp since they work byte for
63 : * byte and don't deal with multibyte encodings (such as UTF-8). */
64 :
65 : static inline bool
66 8651 : mnre_is_pattern_properly_escaped(const char *pat, unsigned char esc)
67 : {
68 8651 : bool escaped = false;
69 :
70 8651 : if (pat == 0)
71 : return true;
72 64360 : while (*pat) {
73 55709 : if (escaped) {
74 : escaped = false;
75 55537 : } else if ((unsigned char) *pat == esc) {
76 55709 : escaped = true;
77 : }
78 55709 : pat++;
79 : }
80 8651 : return escaped ? false : true;
81 : }
82 :
83 : /* returns true if the pattern does not contain wildcard
84 : * characters ('%' or '_') and no character is escaped
85 : */
86 : static inline bool
87 8595 : is_strcmpable(const char *pat, const char *esc)
88 : {
89 8595 : if (pat[strcspn(pat, "%_")])
90 : return false;
91 1902 : return strlen(esc) == 0 || strNil(esc) || strstr(pat, esc) == NULL;
92 : }
93 :
94 : /* Match regular expression by comparing bytes.
95 : */
96 : static inline bool
97 381823 : mnre_match(const char *restrict s, const struct RE *restrict pattern)
98 : {
99 381823 : const struct RE *r;
100 :
101 441926 : for (r = pattern; r; r = r->n) {
102 406548 : for (size_t i = 0; i < r->skip; s++) {
103 22679 : if (*s == 0)
104 : return false;
105 23599 : i += (*s & 0xC0) != 0x80;
106 : }
107 383869 : if (r->search) {
108 157947 : if (r->atend) {
109 : /* we're searching for a string at the end, so just skip
110 : * over everything and just compare with the tail of the
111 : * haystack */
112 23069 : size_t slen = strlen(s);
113 23069 : if (slen < r->ulen) {
114 : /* remaining string too short: each codepoint
115 : * requires at least one byte */
116 : return false;
117 : }
118 23273 : const char *e = s + slen;
119 23273 : if (!r->case_ignore) {
120 23191 : if (slen < r->len) {
121 : /* remaining string is too short to match */
122 : return false;
123 : }
124 23305 : e -= r->len;
125 23305 : if ((*e & 0xC0) == 0x80) {
126 : /* not at start of a Unicode character, so
127 : * cannot match (this test not strictly
128 : * required: the strcmp should also return
129 : * unequal) */
130 : return false;
131 : }
132 23570 : return strcmp(e, r->k) == 0;
133 : }
134 : size_t ulen = r->ulen;
135 363 : while (e > s && ulen != 0) {
136 281 : ulen -= (*--e & 0xC0) != 0x80;
137 : }
138 : /* ulen != 0 means remaining string is too short */
139 144 : return ulen == 0 && GDKstrcasecmp(e, r->k) == 0;
140 : }
141 : /* in case we have a pattern consisting of % followed by _,
142 : * we need to backtrack, so use recursion; here we know we
143 : * have the %, look for an _ in the rest of the pattern
144 : * (note %_ and _% are equivalent and is taken care of by
145 : * the pattern construction in mnre_create) */
146 140061 : for (const struct RE *p = r->n; p; p = p->n) {
147 7325 : if (p->skip != 0) {
148 2142 : struct RE pat = *r;
149 2142 : pat.search = false;
150 2142 : pat.skip = 0;
151 161001 : do {
152 161001 : if (mnre_match(s, &pat))
153 : return true;
154 160804 : do
155 160804 : s++;
156 160815 : while (*s && (*s & 0xC0) == 0x80);
157 160815 : } while (*s != 0);
158 : return false;
159 : }
160 : }
161 : }
162 358658 : if (r->k[0] == 0 && (r->search || *s == 0))
163 : return true;
164 358616 : if (r->case_ignore) {
165 11335 : for (;;) {
166 11335 : if (r->search && (s = GDKstrcasestr(s, r->k)) == NULL)
167 : return false;
168 3709 : if (*s == '\0')
169 : return false;
170 : /* in "atend" comparison, compare whole string, else
171 : * only part */
172 3765 : if ((!r->search || r->atend) &&
173 56 : (r->atend ? GDKstrcasecmp(s, r->k) : GDKstrncasecmp(s, r->k, SIZE_MAX, r->len)) != 0) {
174 : /* no match */
175 18 : if (!r->search)
176 : return false;
177 : /* try again with next character */
178 0 : do
179 0 : s++;
180 0 : while (*s != '\0' && (*s & 0xC0) == 0x80);
181 0 : continue;
182 : }
183 : /* match; find end of match by counting codepoints */
184 58157 : for (size_t i = 0; *s && i < r->ulen; s++)
185 54466 : i += (*s & 0xC0) != 0x80;
186 : break;
187 : }
188 : } else {
189 347281 : for (;;) {
190 347281 : if (r->search && (s = strstr(s, r->k)) == NULL)
191 : return false;
192 246236 : if (*s == '\0')
193 : return false;
194 : /* in "atend" comparison, include NUL byte in the compare */
195 245759 : if ((!r->search || r->atend) &&
196 192007 : strncmp(s, r->k, r->len + r->atend) != 0) {
197 : /* no match */
198 189347 : if (!r->search)
199 : return false;
200 : /* try again with next character: have search start
201 : * after current first byte */
202 0 : if ((s = strchr(s + 1, r->k[0])) == NULL)
203 : return false;
204 0 : continue;
205 : }
206 : /* match */
207 56412 : s += r->len;
208 56412 : break;
209 : }
210 : }
211 : }
212 : return true;
213 : }
214 :
215 : static void
216 7743 : mnre_destroy(struct RE *p)
217 : {
218 7743 : if (p) {
219 7743 : GDKfree(p->k);
220 8745 : do {
221 8745 : struct RE *n = p->n;
222 :
223 8745 : GDKfree(p);
224 8743 : p = n;
225 8743 : } while (p);
226 : }
227 7757 : }
228 :
229 : /* Create a linked list of RE structures. Depending on the
230 : * caseignore and the ascii_pattern flags, the w
231 : * (if caseignore == true && ascii_pattern == false) or the k
232 : * (in every other case) field is used. These in the first
233 : * structure are allocated, whereas in all subsequent
234 : * structures the fields point into the allocated buffer of
235 : * the first.
236 : */
237 : static struct RE *
238 7756 : mnre_create(const char *pat, bool caseignore, uint32_t esc)
239 : {
240 7756 : struct RE *r = GDKmalloc(sizeof(struct RE)), *n = r;
241 7760 : bool escaped = false;
242 7760 : char *p, *q;
243 :
244 7760 : if (r == NULL)
245 : return NULL;
246 7760 : *r = (struct RE) {
247 : .atend = true,
248 : .case_ignore = caseignore,
249 : };
250 :
251 14479 : for (;;) {
252 14479 : if (esc != '%' && *pat == '%') {
253 6468 : pat++; /* skip % */
254 6468 : r->search = true;
255 8011 : } else if (esc != '_' && *pat == '_') {
256 251 : pat++;
257 251 : r->skip++;
258 : } else {
259 : break;
260 : }
261 : }
262 7760 : if ((p = GDKstrdup(pat)) == NULL) {
263 0 : GDKfree(r);
264 0 : return NULL;
265 : }
266 :
267 7752 : r->k = p;
268 7752 : q = p;
269 51895 : while (*p) {
270 44156 : if (escaped) {
271 173 : *q++ = *p;
272 173 : n->len++;
273 173 : n->ulen += (*p & 0xC0) != 0x80;
274 173 : escaped = false;
275 43983 : } else if ((unsigned char) *p == esc) {
276 : escaped = true;
277 43810 : } else if (*p == '%' || *p == '_') {
278 7661 : n->atend = false;
279 7661 : bool search = false;
280 7661 : size_t skip = 0;
281 23135 : for (;;) {
282 15398 : if (*p == '_')
283 775 : skip++;
284 14623 : else if (*p == '%')
285 : search = true;
286 : else
287 : break;
288 7737 : p++;
289 : }
290 7661 : if (*p || skip != 0) {
291 998 : n = n->n = GDKmalloc(sizeof(struct RE));
292 985 : if (n == NULL)
293 0 : goto bailout;
294 985 : *n = (struct RE) {
295 : .search = search,
296 : .atend = true,
297 : .skip = skip,
298 : .k = p,
299 : .case_ignore = caseignore,
300 : };
301 : }
302 7648 : *q = 0;
303 7648 : q = p;
304 7648 : continue; /* skip increment, we already did it */
305 : } else {
306 36149 : *q++ = *p;
307 36149 : n->len++;
308 36149 : n->ulen += (*p & 0xC0) != 0x80;
309 : }
310 36495 : p++;
311 : }
312 7739 : *q = 0;
313 7739 : return r;
314 0 : bailout:
315 0 : mnre_destroy(r);
316 0 : return NULL;
317 : }
318 :
319 : #ifdef HAVE_LIBPCRE
320 : static str
321 25 : pcre_compile_wrap(pcre **res, const char *pattern, bit insensitive)
322 : {
323 25 : pcre *r;
324 25 : const char *err_p = NULL;
325 25 : int errpos = 0;
326 25 : int options = PCRE_UTF8 | PCRE_NO_UTF8_CHECK | PCRE_MULTILINE;
327 25 : if (insensitive)
328 0 : options |= PCRE_CASELESS;
329 :
330 25 : if ((r = pcre_compile(pattern, options, &err_p, &errpos, NULL)) == NULL) {
331 0 : throw(MAL, "pcre.compile", OPERATION_FAILED
332 : " with\n'%s'\nat %d in\n'%s'.\n", err_p, errpos, pattern);
333 : }
334 25 : *res = r;
335 25 : return MAL_SUCCEED;
336 : }
337 : #endif
338 :
339 : /* maximum number of back references and quoted \ or $ in replacement string */
340 : #define MAX_NR_REFS 20
341 :
342 : struct backref {
343 : int idx;
344 : int start;
345 : int end;
346 : };
347 :
348 : #ifdef HAVE_LIBPCRE
349 : /* fill in parameter backrefs (length maxrefs) with information about
350 : * back references in the replacement string; a back reference is a
351 : * dollar or backslash followed by a number */
352 : static int
353 138 : parse_replacement(const char *replacement, int len_replacement,
354 : struct backref *backrefs, int maxrefs)
355 : {
356 138 : int nbackrefs = 0;
357 :
358 207 : for (int i = 0; i < len_replacement && nbackrefs < maxrefs; i++) {
359 70 : if (replacement[i] == '$' || replacement[i] == '\\') {
360 11 : char *endptr;
361 11 : backrefs[nbackrefs].idx = strtol(replacement + i + 1, &endptr, 10);
362 10 : if (endptr > replacement + i + 1) {
363 10 : int k = (int) (endptr - (replacement + i + 1));
364 10 : backrefs[nbackrefs].start = i;
365 10 : backrefs[nbackrefs].end = i + k + 1;
366 10 : nbackrefs++;
367 0 : } else if (replacement[i] == replacement[i + 1]) {
368 : /* doubled $ or \, we must copy just one to the output */
369 0 : backrefs[nbackrefs].idx = INT_MAX; /* impossible value > 0 */
370 0 : backrefs[nbackrefs].start = i;
371 0 : backrefs[nbackrefs].end = i + 1;
372 0 : i++; /* don't look at second $ or \ again */
373 0 : nbackrefs++;
374 : }
375 : /* else: $ or \ followed by something we don't recognize,
376 : * so just leave it */
377 : }
378 : }
379 137 : return nbackrefs;
380 : }
381 :
382 : static char *
383 51074 : single_replace(pcre *pcre_code, pcre_extra *extra,
384 : const char *origin_str, int len_origin_str,
385 : int exec_options, int *ovector, int ovecsize,
386 : const char *replacement, int len_replacement,
387 : struct backref *backrefs, int nbackrefs,
388 : bool global, char *result, int *max_result)
389 : {
390 51074 : int offset = 0;
391 51074 : int len_result = 0;
392 51074 : int addlen;
393 51074 : int empty_match_correction = 0;
394 190911 : char *tmp;
395 :
396 190911 : do {
397 190911 : int j = pcre_exec(pcre_code, extra, origin_str, len_origin_str, offset,
398 : exec_options, ovector, ovecsize);
399 191030 : if (j <= 0)
400 : break;
401 :
402 143505 : empty_match_correction = ovector[0] == ovector[1] ? 1 : 0;
403 :
404 : // calculate the length of the string that will be appended to result
405 287010 : addlen = ovector[0] - offset
406 143505 : + (nbackrefs == 0 ? len_replacement : 0) + empty_match_correction;
407 143505 : if (len_result + addlen >= *max_result) {
408 12149 : tmp = GDKrealloc(result, len_result + addlen + 1);
409 12149 : if (tmp == NULL) {
410 0 : GDKfree(result);
411 0 : return NULL;
412 : }
413 12149 : result = tmp;
414 12149 : *max_result = len_result + addlen + 1;
415 : }
416 : // append to the result the parts of the original string that are left unchanged
417 143505 : if (ovector[0] > offset) {
418 139268 : strncpy(result + len_result, origin_str + offset,
419 139268 : ovector[0] - offset);
420 139268 : len_result += ovector[0] - offset;
421 : }
422 : // append to the result the replacement of the matched string
423 143505 : if (nbackrefs == 0) {
424 139843 : strncpy(result + len_result, replacement, len_replacement);
425 139843 : len_result += len_replacement;
426 : } else {
427 : int prevend = 0;
428 7324 : for (int i = 0; i < nbackrefs; i++) {
429 3662 : int off, len;
430 3662 : if (backrefs[i].idx >= ovecsize / 3) {
431 : /* out of bounds, replace with empty string */
432 : off = 0;
433 : len = 0;
434 : } else {
435 3662 : off = ovector[backrefs[i].idx * 2];
436 3662 : len = ovector[backrefs[i].idx * 2 + 1] - off;
437 : }
438 3662 : addlen = backrefs[i].start - prevend + len;
439 3662 : if (len_result + addlen >= *max_result) {
440 37 : tmp = GDKrealloc(result, len_result + addlen + 1);
441 37 : if (tmp == NULL) {
442 0 : GDKfree(result);
443 0 : return NULL;
444 : }
445 37 : result = tmp;
446 37 : *max_result = len_result + addlen + 1;
447 : }
448 3662 : if (backrefs[i].start > prevend) {
449 2 : strncpy(result + len_result, replacement + prevend,
450 2 : backrefs[i].start - prevend);
451 2 : len_result += backrefs[i].start - prevend;
452 : }
453 3662 : if (len > 0) {
454 3662 : strncpy(result + len_result, origin_str + off, len);
455 3662 : len_result += len;
456 : }
457 3662 : prevend = backrefs[i].end;
458 : }
459 : /* copy rest of replacement string (after last backref) */
460 3662 : addlen = len_replacement - prevend;
461 3662 : if (addlen > 0) {
462 2 : if (len_result + addlen >= *max_result) {
463 1 : tmp = GDKrealloc(result, len_result + addlen + 1);
464 1 : if (tmp == NULL) {
465 0 : GDKfree(result);
466 0 : return NULL;
467 : }
468 1 : result = tmp;
469 1 : *max_result = len_result + addlen + 1;
470 : }
471 2 : strncpy(result + len_result, replacement + prevend, addlen);
472 2 : len_result += addlen;
473 : }
474 : }
475 : // In case of an empty match just advance the offset by 1
476 143505 : offset = ovector[1] + empty_match_correction;
477 : // and copy the character that we just advanced over
478 143505 : if (empty_match_correction) {
479 14 : strncpy(result + len_result, origin_str + ovector[1], 1);
480 14 : ++len_result;
481 : }
482 : // before we loop around check with the offset - 1 if we had an empty match
483 : // since we manually advanced the offset by one. otherwise we gonna skip a
484 : // replacement at the end of the string
485 143505 : } while ((offset - empty_match_correction) < len_origin_str && global);
486 :
487 51193 : if (offset < len_origin_str) {
488 47400 : addlen = len_origin_str - offset;
489 47400 : if (len_result + addlen >= *max_result) {
490 690 : tmp = GDKrealloc(result, len_result + addlen + 1);
491 690 : if (tmp == NULL) {
492 0 : GDKfree(result);
493 0 : return NULL;
494 : }
495 690 : result = tmp;
496 690 : *max_result = len_result + addlen + 1;
497 : }
498 47400 : strncpy(result + len_result, origin_str + offset, addlen);
499 47400 : len_result += addlen;
500 : }
501 : /* null terminate string */
502 51193 : result[len_result] = '\0';
503 51193 : return result;
504 : }
505 : #endif
506 :
507 : static str
508 14 : pcre_replace(str *res, const char *origin_str, const char *pattern,
509 : const char *replacement, const char *flags, bool global)
510 : {
511 : #ifdef HAVE_LIBPCRE
512 14 : const char *err_p = NULL;
513 14 : pcre *pcre_code = NULL;
514 14 : pcre_extra *extra;
515 14 : char *tmpres;
516 14 : int max_result;
517 14 : int i, errpos = 0;
518 14 : int compile_options = PCRE_UTF8 | PCRE_NO_UTF8_CHECK;
519 14 : int exec_options = PCRE_NOTEMPTY | PCRE_NO_UTF8_CHECK;
520 14 : int *ovector, ovecsize;
521 14 : int len_origin_str = (int) strlen(origin_str);
522 14 : int len_replacement = (int) strlen(replacement);
523 14 : struct backref backrefs[MAX_NR_REFS];
524 14 : int nbackrefs = 0;
525 :
526 21 : while (*flags) {
527 7 : switch (*flags) {
528 : case 'e':
529 : exec_options &= ~PCRE_NOTEMPTY;
530 : break;
531 1 : case 'i':
532 1 : compile_options |= PCRE_CASELESS;
533 1 : break;
534 1 : case 'm':
535 1 : compile_options |= PCRE_MULTILINE;
536 1 : break;
537 1 : case 's':
538 1 : compile_options |= PCRE_DOTALL;
539 1 : break;
540 1 : case 'x':
541 1 : compile_options |= PCRE_EXTENDED;
542 1 : break;
543 0 : default:
544 0 : throw(MAL, global ? "pcre.replace" : "pcre.replace_first",
545 : ILLEGAL_ARGUMENT ": unsupported flag character '%c'\n",
546 : *flags);
547 : }
548 7 : flags++;
549 : }
550 :
551 14 : if ((pcre_code = pcre_compile(pattern, compile_options, &err_p, &errpos, NULL)) == NULL) {
552 0 : throw(MAL, global ? "pcre.replace" : "pcre.replace_first",
553 : OPERATION_FAILED
554 : ": pcre compile of pattern (%s) failed at %d with\n'%s'.\n",
555 : pattern, errpos, err_p);
556 : }
557 :
558 : /* Since the compiled pattern is going to be used several times, it is
559 : * worth spending more time analyzing it in order to speed up the time
560 : * taken for matching.
561 : */
562 14 : extra = pcre_study(pcre_code, 0, &err_p);
563 14 : if (err_p != NULL) {
564 0 : pcre_free(pcre_code);
565 0 : throw(MAL, global ? "pcre.replace" : "pcre.replace_first",
566 : OPERATION_FAILED
567 : ": pcre study of pattern (%s) failed with '%s'.\n", pattern,
568 : err_p);
569 : }
570 14 : pcre_fullinfo(pcre_code, extra, PCRE_INFO_CAPTURECOUNT, &i);
571 14 : ovecsize = (i + 1) * 3;
572 14 : if ((ovector = (int *) GDKmalloc(sizeof(int) * ovecsize)) == NULL) {
573 0 : pcre_free_study(extra);
574 0 : pcre_free(pcre_code);
575 0 : throw(MAL, global ? "pcre.replace" : "pcre.replace_first",
576 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
577 : }
578 :
579 : /* identify back references in the replacement string */
580 14 : nbackrefs = parse_replacement(replacement, len_replacement,
581 : backrefs, MAX_NR_REFS);
582 :
583 14 : max_result = len_origin_str + 1;
584 14 : tmpres = GDKmalloc(max_result);
585 14 : if (tmpres == NULL) {
586 0 : GDKfree(ovector);
587 0 : pcre_free_study(extra);
588 0 : pcre_free(pcre_code);
589 0 : throw(MAL, global ? "pcre.replace" : "pcre.replace_first",
590 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
591 : }
592 :
593 14 : tmpres = single_replace(pcre_code, extra, origin_str, len_origin_str,
594 : exec_options, ovector, ovecsize, replacement,
595 : len_replacement, backrefs, nbackrefs, global,
596 : tmpres, &max_result);
597 14 : GDKfree(ovector);
598 14 : pcre_free_study(extra);
599 14 : pcre_free(pcre_code);
600 14 : if (tmpres == NULL)
601 0 : throw(MAL, global ? "pcre.replace" : "pcre.replace_first",
602 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
603 :
604 14 : *res = tmpres;
605 14 : return MAL_SUCCEED;
606 : #else
607 : (void) res;
608 : (void) origin_str;
609 : (void) pattern;
610 : (void) replacement;
611 : (void) flags;
612 : (void) global;
613 : throw(MAL, global ? "pcre.replace" : "pcre.replace_first",
614 : "Database was compiled without PCRE support.");
615 : #endif
616 : }
617 :
618 : static str
619 125 : pcre_replace_bat(BAT **res, BAT *origin_strs, const char *pattern,
620 : const char *replacement, const char *flags, bool global)
621 : {
622 : #ifdef HAVE_LIBPCRE
623 125 : const char *err_p = NULL;
624 125 : char *tmpres;
625 125 : int i, errpos = 0;
626 125 : int compile_options = PCRE_UTF8 | PCRE_NO_UTF8_CHECK;
627 125 : int exec_options = PCRE_NOTEMPTY | PCRE_NO_UTF8_CHECK;
628 125 : pcre *pcre_code = NULL;
629 125 : pcre_extra *extra;
630 125 : BAT *tmpbat;
631 125 : BUN p, q;
632 125 : int *ovector, ovecsize;
633 125 : int len_replacement = (int) strlen(replacement);
634 125 : struct backref backrefs[MAX_NR_REFS];
635 125 : int nbackrefs = 0;
636 125 : const char *origin_str;
637 125 : int max_dest_size = 0;
638 :
639 161 : while (*flags) {
640 36 : switch (*flags) {
641 : case 'e':
642 : exec_options &= ~PCRE_NOTEMPTY;
643 : break;
644 9 : case 'i':
645 9 : compile_options |= PCRE_CASELESS;
646 9 : break;
647 18 : case 'm':
648 18 : compile_options |= PCRE_MULTILINE;
649 18 : break;
650 9 : case 's':
651 9 : compile_options |= PCRE_DOTALL;
652 9 : break;
653 0 : case 'x':
654 0 : compile_options |= PCRE_EXTENDED;
655 0 : break;
656 0 : default:
657 0 : throw(MAL, global ? "batpcre.replace" : "batpcre.replace_first",
658 : ILLEGAL_ARGUMENT ": unsupported flag character '%c'\n",
659 : *flags);
660 : }
661 36 : flags++;
662 : }
663 :
664 125 : if ((pcre_code = pcre_compile(pattern, compile_options, &err_p, &errpos, NULL)) == NULL) {
665 0 : throw(MAL, global ? "batpcre.replace" : "batpcre.replace_first",
666 : OPERATION_FAILED
667 : ": pcre compile of pattern (%s) failed at %d with\n'%s'.\n",
668 : pattern, errpos, err_p);
669 : }
670 :
671 : /* Since the compiled pattern is going to be used several times,
672 : * it is worth spending more time analyzing it in order to speed
673 : * up the time taken for matching.
674 : */
675 248 : extra = pcre_study(pcre_code,
676 123 : BATcount(origin_strs) >
677 : JIT_COMPILE_MIN ? PCRE_STUDY_JIT_COMPILE : 0, &err_p);
678 125 : if (err_p != NULL) {
679 0 : pcre_free(pcre_code);
680 0 : throw(MAL, global ? "batpcre.replace" : "batpcre.replace_first",
681 : OPERATION_FAILED);
682 : }
683 125 : pcre_fullinfo(pcre_code, extra, PCRE_INFO_CAPTURECOUNT, &i);
684 124 : ovecsize = (i + 1) * 3;
685 124 : if ((ovector = (int *) GDKzalloc(sizeof(int) * ovecsize)) == NULL) {
686 0 : pcre_free_study(extra);
687 0 : pcre_free(pcre_code);
688 0 : throw(MAL, global ? "batpcre.replace" : "batpcre.replace_first",
689 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
690 : }
691 :
692 : /* identify back references in the replacement string */
693 126 : nbackrefs = parse_replacement(replacement, len_replacement,
694 : backrefs, MAX_NR_REFS);
695 :
696 123 : tmpbat = COLnew(origin_strs->hseqbase, TYPE_str, BATcount(origin_strs),
697 : TRANSIENT);
698 :
699 : /* the buffer for all destination strings is allocated only once,
700 : * and extended when needed */
701 126 : max_dest_size = len_replacement + 1;
702 126 : tmpres = GDKmalloc(max_dest_size);
703 126 : if (tmpbat == NULL || tmpres == NULL) {
704 0 : pcre_free_study(extra);
705 0 : pcre_free(pcre_code);
706 0 : GDKfree(ovector);
707 0 : BBPreclaim(tmpbat);
708 0 : GDKfree(tmpres);
709 0 : throw(MAL, global ? "batpcre.replace" : "batpcre.replace_first",
710 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
711 : }
712 126 : BATiter origin_strsi = bat_iterator(origin_strs);
713 51342 : BATloop(origin_strs, p, q) {
714 51216 : origin_str = BUNtvar(origin_strsi, p);
715 102262 : tmpres = single_replace(pcre_code, extra, origin_str,
716 51216 : (int) strlen(origin_str), exec_options,
717 : ovector, ovecsize, replacement,
718 : len_replacement, backrefs, nbackrefs, global,
719 : tmpres, &max_dest_size);
720 51046 : if (tmpres == NULL || BUNappend(tmpbat, tmpres, false) != GDK_SUCCEED) {
721 0 : bat_iterator_end(&origin_strsi);
722 0 : pcre_free_study(extra);
723 0 : pcre_free(pcre_code);
724 0 : GDKfree(ovector);
725 0 : GDKfree(tmpres);
726 0 : BBPreclaim(tmpbat);
727 0 : throw(MAL, global ? "batpcre.replace" : "batpcre.replace_first",
728 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
729 : }
730 : }
731 126 : bat_iterator_end(&origin_strsi);
732 126 : pcre_free_study(extra);
733 126 : pcre_free(pcre_code);
734 126 : GDKfree(ovector);
735 126 : GDKfree(tmpres);
736 126 : *res = tmpbat;
737 126 : return MAL_SUCCEED;
738 : #else
739 : (void) res;
740 : (void) origin_strs;
741 : (void) pattern;
742 : (void) replacement;
743 : (void) flags;
744 : (void) global;
745 : throw(MAL, global ? "batpcre.replace" : "batpcre.replace_first",
746 : "Database was compiled without PCRE support.");
747 : #endif
748 : }
749 :
750 : static str
751 4 : pcre_match_with_flags(bit *ret, const char *val, const char *pat,
752 : const char *flags)
753 : {
754 4 : int pos;
755 : #ifdef HAVE_LIBPCRE
756 4 : const char *err_p = NULL;
757 4 : int errpos = 0;
758 4 : int options = PCRE_UTF8 | PCRE_NO_UTF8_CHECK | PCRE_DOTALL;
759 4 : pcre *re;
760 : #else
761 : int options = REG_NOSUB | REG_EXTENDED;
762 : regex_t re;
763 : int errcode;
764 : int retval;
765 : #endif
766 :
767 4 : while (*flags) {
768 0 : switch (*flags) {
769 0 : case 'i':
770 : #ifdef HAVE_LIBPCRE
771 0 : options |= PCRE_CASELESS;
772 : #else
773 : options |= REG_ICASE;
774 : #endif
775 0 : break;
776 0 : case 'm':
777 : #ifdef HAVE_LIBPCRE
778 0 : options |= PCRE_MULTILINE;
779 : #else
780 : options |= REG_NEWLINE;
781 : #endif
782 0 : break;
783 : #ifdef HAVE_LIBPCRE
784 0 : case 's':
785 0 : options |= PCRE_DOTALL;
786 0 : break;
787 : #endif
788 0 : case 'x':
789 : #ifdef HAVE_LIBPCRE
790 0 : options |= PCRE_EXTENDED;
791 : #else
792 : options |= REG_EXTENDED;
793 : #endif
794 0 : break;
795 0 : default:
796 0 : throw(MAL, "pcre.match", ILLEGAL_ARGUMENT
797 : ": unsupported flag character '%c'\n", *flags);
798 : }
799 0 : flags++;
800 : }
801 4 : if (strNil(val)) {
802 0 : *ret = FALSE;
803 0 : return MAL_SUCCEED;
804 : }
805 :
806 : #ifdef HAVE_LIBPCRE
807 4 : if ((re = pcre_compile(pat, options, &err_p, &errpos, NULL)) == NULL)
808 : #else
809 : if ((errcode = regcomp(&re, pat, options)) != 0)
810 : #endif
811 : {
812 0 : throw(MAL, "pcre.match", OPERATION_FAILED
813 : ": compilation of regular expression (%s) failed "
814 : #ifdef HAVE_LIBPCRE
815 : "at %d with '%s'", pat, errpos, err_p
816 : #else
817 : , pat
818 : #endif
819 : );
820 : }
821 : #ifdef HAVE_LIBPCRE
822 4 : pos = pcre_exec(re, NULL, val, (int) strlen(val), 0, PCRE_NO_UTF8_CHECK,
823 : NULL, 0);
824 4 : pcre_free(re);
825 : #else
826 : retval = regexec(&re, val, (size_t) 0, NULL, 0);
827 : pos = retval == REG_NOMATCH ? -1 : (retval == REG_ENOSYS ? -2 : 0);
828 : regfree(&re);
829 : #endif
830 4 : if (pos >= 0)
831 3 : *ret = TRUE;
832 1 : else if (pos == -1)
833 1 : *ret = FALSE;
834 : else
835 0 : throw(MAL, "pcre.match", OPERATION_FAILED
836 : ": matching of regular expression (%s) failed with %d", pat, pos);
837 : return MAL_SUCCEED;
838 : }
839 :
840 : #ifdef HAVE_LIBPCRE
841 : /* special characters in PCRE that need to be escaped */
842 : static const char pcre_specials[] = "$()*+.?[\\]^{|}";
843 : #else
844 : /* special characters in POSIX basic regular expressions that need to
845 : * be escaped */
846 : static const char pcre_specials[] = "$()*+.?[\\^{|";
847 : #endif
848 :
849 : /* change SQL LIKE pattern into PCRE pattern */
850 : static str
851 6 : sql2pcre(str *r, const char *pat, const char *esc_str)
852 : {
853 6 : int escaped = 0;
854 6 : int hasWildcard = 0;
855 6 : char *ppat;
856 12 : int esc = strNil(esc_str) ? 0 : esc_str[0]; /* should change to utf8_convert() */
857 6 : int specials;
858 6 : int c;
859 :
860 6 : if (strlen(esc_str) > 1)
861 0 : throw(MAL, "pcre.sql2pcre",
862 : SQLSTATE(22019) ILLEGAL_ARGUMENT
863 : ": ESCAPE string must have length 1");
864 6 : if (pat == NULL)
865 0 : throw(MAL, "pcre.sql2pcre",
866 : SQLSTATE(22019) ILLEGAL_ARGUMENT
867 : ": (I)LIKE pattern must not be NULL");
868 6 : ppat = GDKmalloc(strlen(pat) * 3 +
869 : 3 /* 3 = "^'the translated regexp'$0" */ );
870 6 : if (ppat == NULL)
871 0 : throw(MAL, "pcre.sql2pcre", SQLSTATE(HY013) MAL_MALLOC_FAIL);
872 :
873 6 : *r = ppat;
874 : /* The escape character can be a char which is special in a PCRE
875 : * expression. If the user used the "+" char as escape and has "++"
876 : * in their pattern, then replacing this with "+" is not correct and
877 : * should be "\+" instead. */
878 6 : specials = (esc && strchr(pcre_specials, esc) != NULL);
879 :
880 6 : *ppat++ = '^';
881 17 : while ((c = *pat++) != 0) {
882 11 : if (c == esc) {
883 2 : if (escaped) {
884 1 : if (specials) { /* change ++ into \+ */
885 1 : *ppat++ = esc;
886 : } else { /* do not escape simple escape symbols */
887 0 : ppat[-1] = esc; /* overwrite backslash */
888 : }
889 : escaped = 0;
890 : } else {
891 1 : *ppat++ = '\\';
892 1 : escaped = 1;
893 : }
894 : hasWildcard = 1;
895 9 : } else if (strchr(pcre_specials, c) != NULL) {
896 : /* escape PCRE special chars, avoid double backslash if the
897 : * user uses an invalid escape sequence */
898 2 : if (!escaped)
899 2 : *ppat++ = '\\';
900 2 : *ppat++ = c;
901 2 : hasWildcard = 1;
902 2 : escaped = 0;
903 7 : } else if (c == '%' && !escaped) {
904 3 : *ppat++ = '.';
905 3 : *ppat++ = '*';
906 3 : *ppat++ = '?';
907 3 : hasWildcard = 1;
908 : /* collapse multiple %, but only if it isn't the escape */
909 3 : if (esc != '%')
910 3 : while (*pat == '%')
911 0 : pat++;
912 4 : } else if (c == '_' && !escaped) {
913 3 : *ppat++ = '.';
914 3 : hasWildcard = 1;
915 : } else {
916 1 : if (escaped) {
917 0 : ppat[-1] = c; /* overwrite backslash of invalid escape */
918 : } else {
919 1 : *ppat++ = c;
920 : }
921 : escaped = 0;
922 : }
923 : }
924 : /* no wildcard or escape character at end of string */
925 6 : if (!hasWildcard || escaped) {
926 1 : GDKfree(*r);
927 1 : *r = NULL;
928 1 : if (escaped)
929 0 : throw(MAL, "pcre.sql2pcre",
930 : SQLSTATE(22019) ILLEGAL_ARGUMENT
931 : ": (I)LIKE pattern must not end with escape character");
932 1 : *r = GDKstrdup(str_nil);
933 1 : if (*r == NULL)
934 0 : throw(MAL, "pcre.sql2pcre", SQLSTATE(HY013) MAL_MALLOC_FAIL);
935 : } else {
936 5 : *ppat++ = '$';
937 5 : *ppat = 0;
938 : }
939 : return MAL_SUCCEED;
940 : }
941 :
942 : #ifdef HAVE_LIBPCRE
943 : /* change SQL PATINDEX pattern into PCRE pattern */
944 : static str
945 25 : pat2pcre(str *r, const char *pat)
946 : {
947 25 : size_t len = strlen(pat);
948 25 : char *ppat = GDKmalloc(len * 2 + 3 /* 3 = "^'the translated regexp'$0" */ );
949 25 : int start = 0;
950 :
951 25 : if (ppat == NULL)
952 0 : throw(MAL, "pcre.sql2pcre", SQLSTATE(HY013) MAL_MALLOC_FAIL);
953 25 : *r = ppat;
954 77 : while (*pat) {
955 52 : int c = *pat++;
956 :
957 52 : if (strchr(pcre_specials, c) != NULL) {
958 17 : *ppat++ = '\\';
959 17 : *ppat++ = c;
960 35 : } else if (c == '%') {
961 3 : if (start && *pat) {
962 0 : *ppat++ = '.';
963 0 : *ppat++ = '*';
964 : }
965 3 : start++;
966 32 : } else if (c == '_') {
967 0 : *ppat++ = '.';
968 : } else {
969 32 : *ppat++ = c;
970 : }
971 : }
972 25 : *ppat = 0;
973 25 : return MAL_SUCCEED;
974 : }
975 : #endif
976 :
977 : /*
978 : * @+ Wrapping
979 : */
980 :
981 : static str
982 14 : PCREreplace_wrap(str *res, const char *const *or, const char *const *pat,
983 : const char *const *repl, const char *const *flags)
984 : {
985 14 : return pcre_replace(res, *or, *pat, *repl, *flags, true);
986 : }
987 :
988 : static str
989 0 : PCREreplacefirst_wrap(str *res, const char *const *or, const char *const *pat,
990 : const char *const *repl, const char *const *flags)
991 : {
992 0 : return pcre_replace(res, *or, *pat, *repl, *flags, false);
993 : }
994 :
995 : static str
996 125 : PCREreplace_bat_wrap(bat *res, const bat *bid, const char *const *pat,
997 : const char *const *repl, const char *const *flags)
998 : {
999 125 : BAT *b, *bn = NULL;
1000 125 : str msg;
1001 125 : if ((b = BATdescriptor(*bid)) == NULL)
1002 0 : throw(MAL, "batpcre.replace", SQLSTATE(HY002) RUNTIME_OBJECT_MISSING);
1003 :
1004 126 : msg = pcre_replace_bat(&bn, b, *pat, *repl, *flags, true);
1005 126 : if (msg == MAL_SUCCEED) {
1006 126 : *res = bn->batCacheid;
1007 126 : BBPkeepref(bn);
1008 : }
1009 126 : BBPunfix(b->batCacheid);
1010 126 : return msg;
1011 : }
1012 :
1013 : static str
1014 0 : PCREreplacefirst_bat_wrap(bat *res, const bat *bid, const char *const *pat,
1015 : const char *const *repl, const char *const *flags)
1016 : {
1017 0 : BAT *b, *bn = NULL;
1018 0 : str msg;
1019 0 : if ((b = BATdescriptor(*bid)) == NULL)
1020 0 : throw(MAL, "batpcre.replace_first", SQLSTATE(HY002) RUNTIME_OBJECT_MISSING);
1021 :
1022 0 : msg = pcre_replace_bat(&bn, b, *pat, *repl, *flags, false);
1023 0 : if (msg == MAL_SUCCEED) {
1024 0 : *res = bn->batCacheid;
1025 0 : BBPkeepref(bn);
1026 : }
1027 0 : BBPunfix(b->batCacheid);
1028 0 : return msg;
1029 : }
1030 :
1031 : static str
1032 4 : PCREmatch(bit *ret, const char *const *val, const char *const *pat)
1033 : {
1034 4 : return pcre_match_with_flags(ret, *val, *pat, "");
1035 : }
1036 :
1037 : static str
1038 0 : PCREimatch(bit *ret, const char *const *val, const char *const *pat)
1039 : {
1040 0 : return pcre_match_with_flags(ret, *val, *pat, "i");
1041 : }
1042 :
1043 : static str
1044 25 : PCREindex(int *res, const pcre *pattern, const char *const *s)
1045 : {
1046 : #ifdef HAVE_LIBPCRE
1047 25 : int v[3];
1048 :
1049 25 : v[0] = v[1] = *res = 0;
1050 25 : if (pcre_exec(pattern, NULL, *s, (int) strlen(*s), 0,
1051 : PCRE_NO_UTF8_CHECK, v, 3) >= 0) {
1052 23 : *res = v[1];
1053 : }
1054 25 : return MAL_SUCCEED;
1055 : #else
1056 : (void) res;
1057 : (void) pattern;
1058 : (void) s;
1059 : throw(MAL, "pcre.index", "Database was compiled without PCRE support.");
1060 : #endif
1061 : }
1062 :
1063 : static str
1064 27 : PCREpatindex(int *ret, const char *const *pat, const char *const *val)
1065 : {
1066 : #ifdef HAVE_LIBPCRE
1067 27 : pcre *re = NULL;
1068 27 : char *ppat = NULL, *msg;
1069 :
1070 53 : if (strNil(*pat) || strNil(*val)) {
1071 2 : *ret = int_nil;
1072 2 : return MAL_SUCCEED;
1073 : }
1074 :
1075 25 : if ((msg = pat2pcre(&ppat, *pat)) != MAL_SUCCEED)
1076 : return msg;
1077 25 : if ((msg = pcre_compile_wrap(&re, ppat, FALSE)) != MAL_SUCCEED) {
1078 0 : GDKfree(ppat);
1079 0 : return msg;
1080 : }
1081 25 : GDKfree(ppat);
1082 25 : msg = PCREindex(ret, re, val);
1083 25 : pcre_free(re);
1084 25 : return msg;
1085 : #else
1086 : (void) ret;
1087 : (void) pat;
1088 : (void) val;
1089 : throw(MAL, "pcre.patindex", "Database was compiled without PCRE support.");
1090 : #endif
1091 : }
1092 :
1093 : static str
1094 0 : PCREquote(str *ret, const char *const *val)
1095 : {
1096 0 : char *p;
1097 0 : const char *s = *val;
1098 :
1099 0 : *ret = p = GDKmalloc(strlen(s) * 2 + 1); /* certainly long enough */
1100 0 : if (p == NULL)
1101 0 : throw(MAL, "pcre.quote", SQLSTATE(HY013) MAL_MALLOC_FAIL);
1102 : /* quote all non-alphanumeric ASCII characters (i.e. leave
1103 : non-ASCII and alphanumeric alone) */
1104 0 : while (*s) {
1105 0 : if (!((*s & 0x80) != 0 ||
1106 0 : ('a' <= *s && *s <= 'z') ||
1107 0 : ('A' <= *s && *s <= 'Z') || isdigit((unsigned char) *s)))
1108 0 : *p++ = '\\';
1109 0 : *p++ = *s++;
1110 : }
1111 0 : *p = 0;
1112 0 : return MAL_SUCCEED;
1113 : }
1114 :
1115 : static str
1116 6 : PCREsql2pcre(str *ret, const char *const *pat, const char *const *esc)
1117 : {
1118 6 : return sql2pcre(ret, *pat, *esc);
1119 : }
1120 :
1121 : static inline str
1122 9144 : choose_like_path(bool *use_re, bool *use_strcmp, bool *empty,
1123 : const char *pat, const char *esc)
1124 : {
1125 9144 : str res = MAL_SUCCEED;
1126 9144 : *use_re = false;
1127 9144 : *use_strcmp = false;
1128 9144 : *empty = false;
1129 :
1130 :
1131 17800 : if (strNil(pat) || strNil(esc)) {
1132 488 : *empty = true;
1133 : } else {
1134 8656 : if (!mnre_is_pattern_properly_escaped(pat, (unsigned char) *esc))
1135 5 : throw(MAL, "pcre.sql2pcre",
1136 : SQLSTATE(22019) ILLEGAL_ARGUMENT
1137 : ": (I)LIKE pattern must not end with escape character");
1138 8596 : if (is_strcmpable(pat, esc)) {
1139 905 : *use_re = true;
1140 905 : *use_strcmp = true;
1141 : } else {
1142 7691 : *use_re = true;
1143 : }
1144 : }
1145 : return res;
1146 : }
1147 :
1148 : static str
1149 234 : PCRElike_imp(bit *ret, const char *const *s, const char *const *pat,
1150 : const char *const *esc, const bit *isens)
1151 : {
1152 234 : str res = MAL_SUCCEED;
1153 234 : bool use_re = false, use_strcmp = false, empty = false;
1154 234 : struct RE *re = NULL;
1155 :
1156 234 : if ((res = choose_like_path(&use_re, &use_strcmp, &empty,
1157 : *pat, *esc)) != MAL_SUCCEED)
1158 : return res;
1159 :
1160 459 : MT_thread_setalgorithm(empty ? "pcrelike: trivially empty" : use_strcmp ?
1161 225 : "pcrelike: pattern matching using strcmp" : use_re ?
1162 : "pcrelike: pattern matching using RE" :
1163 : "pcrelike: pattern matching using pcre");
1164 :
1165 468 : if (strNil(*s) || empty) {
1166 0 : *ret = bit_nil;
1167 : } else {
1168 234 : if (use_strcmp) {
1169 9 : *ret = *isens ? GDKstrcasecmp(*s, *pat) == 0
1170 7 : : strcmp(*s, *pat) == 0;
1171 : } else {
1172 225 : if (!(re = mnre_create(*pat, *isens, (unsigned char) **esc)))
1173 0 : res = createException(MAL, "pcre.like4",
1174 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
1175 : else
1176 225 : *ret = mnre_match(*s, re);
1177 : }
1178 : }
1179 :
1180 234 : if (re)
1181 225 : mnre_destroy(re);
1182 : return res;
1183 : }
1184 :
1185 : static str
1186 234 : PCRElike(bit *ret, const char *const *s, const char *const *pat,
1187 : const char *const *esc, const bit *isens)
1188 : {
1189 229 : return PCRElike_imp(ret, s, pat, esc, isens);
1190 : }
1191 :
1192 : static str
1193 5 : PCREnotlike(bit *ret, const char *const *s, const char *const *pat,
1194 : const char *const *esc, const bit *isens)
1195 : {
1196 5 : str tmp;
1197 5 : bit r;
1198 :
1199 5 : rethrow("str.not_like", tmp, PCRElike(&r, s, pat, esc, isens));
1200 5 : *ret = r == bit_nil ? bit_nil : !r;
1201 5 : return MAL_SUCCEED;
1202 : }
1203 :
1204 : static inline str
1205 8429 : mnre_like_build(struct RE **re, const char *pat, bool caseignore,
1206 : bool use_strcmp, uint32_t esc)
1207 : {
1208 8429 : if (!use_strcmp) {
1209 7533 : if (!(*re = mnre_create(pat, caseignore, esc)))
1210 0 : return createException(MAL, "pcre.re_like_build",
1211 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
1212 : }
1213 : return MAL_SUCCEED;
1214 : }
1215 :
1216 : static inline bit
1217 6176 : mnre_like_proj_apply(const char *s, const struct RE *restrict re,
1218 : const char *pat,
1219 : bool caseignore, bool anti, bool use_strcmp)
1220 : {
1221 6176 : if (strNil(s))
1222 408 : return bit_nil;
1223 5768 : if (use_strcmp) {
1224 1097 : if (caseignore) {
1225 489 : if (anti)
1226 458 : return GDKstrcasecmp(s, pat) != 0;
1227 : else
1228 31 : return GDKstrcasecmp(s, pat) == 0;
1229 : } else {
1230 608 : if (anti)
1231 301 : return strcmp(s, pat) != 0;
1232 : else
1233 307 : return strcmp(s, pat) == 0;
1234 : }
1235 : } else {
1236 4671 : if (anti)
1237 136 : return !mnre_match(s, re);
1238 : else
1239 4535 : return mnre_match(s, re);
1240 : }
1241 : }
1242 :
1243 : static inline void
1244 8559 : mnre_like_clean(struct RE **re)
1245 : {
1246 8559 : if (*re) {
1247 928 : mnre_destroy(*re);
1248 7528 : *re = NULL;
1249 : }
1250 : }
1251 :
1252 : static str
1253 1079 : BATPCRElike_imp(Client cntxt, MalBlkPtr mb, MalStkPtr stk, InstrPtr pci,
1254 : const char *const *esc, const bit *isens, const bit *not)
1255 : {
1256 1079 : str msg = MAL_SUCCEED;
1257 1079 : BAT *b = NULL, *pbn = NULL, *bn = NULL;
1258 1079 : const char *input = NULL;
1259 1079 : bool use_re = false,
1260 1079 : use_strcmp = false,
1261 1079 : empty = false,
1262 1079 : isensitive = (bool) *isens,
1263 1079 : anti = (bool) *not,
1264 1079 : has_nil = false,
1265 1079 : input_is_a_bat = isaBatType(getArgType(mb, pci, 1)),
1266 1079 : pattern_is_a_bat = isaBatType(getArgType(mb, pci, 2));
1267 1079 : bat *r = getArgReference_bat(stk, pci, 0);
1268 1079 : BUN q = 0;
1269 1079 : bit *restrict ret = NULL;
1270 1079 : struct RE *mnre_simple = NULL;
1271 1079 : BATiter bi = (BATiter) { 0 }, pi;
1272 :
1273 1079 : (void) cntxt;
1274 1079 : if (input_is_a_bat) {
1275 1080 : bat *bid = getArgReference_bat(stk, pci, 1);
1276 1080 : if (!(b = BATdescriptor(*bid))) {
1277 0 : msg = createException(MAL, "batalgebra.batpcrelike3",
1278 : SQLSTATE(HY002) RUNTIME_OBJECT_MISSING);
1279 0 : goto bailout;
1280 : }
1281 : }
1282 1085 : if (pattern_is_a_bat) {
1283 112 : bat *pb = getArgReference_bat(stk, pci, 2);
1284 112 : if (!(pbn = BATdescriptor(*pb))) {
1285 0 : msg = createException(MAL, "batalgebra.batpcrelike3",
1286 : SQLSTATE(HY002) RUNTIME_OBJECT_MISSING);
1287 0 : goto bailout;
1288 : }
1289 : }
1290 1085 : assert((!b || ATOMstorage(b->ttype) == TYPE_str)
1291 : && (!pbn || ATOMstorage(pbn->ttype) == TYPE_str));
1292 :
1293 1085 : q = BATcount(b ? b : pbn);
1294 1085 : if (!(bn = COLnew(b ? b->hseqbase : pbn->hseqbase, TYPE_bit, q, TRANSIENT))) {
1295 0 : msg = createException(MAL, "batalgebra.batpcrelike3",
1296 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
1297 0 : goto bailout;
1298 : }
1299 1084 : ret = (bit *) Tloc(bn, 0);
1300 :
1301 1084 : if (pattern_is_a_bat) {
1302 112 : pi = bat_iterator(pbn);
1303 112 : if (b)
1304 112 : bi = bat_iterator(b);
1305 : else
1306 0 : input = *getArgReference_str(stk, pci, 1);
1307 :
1308 1147 : for (BUN p = 0; p < q; p++) {
1309 1036 : const char *next_input = b ? BUNtvar(bi, p) : input,
1310 1036 : *np = BUNtvar(pi, p);
1311 :
1312 1036 : if ((msg = choose_like_path(&use_re, &use_strcmp, &empty,
1313 : np, *esc)) != MAL_SUCCEED) {
1314 0 : bat_iterator_end(&pi);
1315 0 : if (b)
1316 0 : bat_iterator_end(&bi);
1317 0 : goto bailout;
1318 : }
1319 :
1320 1071 : if (empty) {
1321 459 : ret[p] = bit_nil;
1322 : } else {
1323 612 : if ((msg = mnre_like_build(&mnre_simple, np, isensitive,
1324 : use_strcmp,
1325 612 : (unsigned char) **esc)) != MAL_SUCCEED) {
1326 0 : bat_iterator_end(&pi);
1327 0 : if (b)
1328 0 : bat_iterator_end(&bi);
1329 0 : goto bailout;
1330 : }
1331 612 : ret[p] = mnre_like_proj_apply(next_input, mnre_simple, np,
1332 : isensitive, anti, use_strcmp);
1333 612 : mnre_like_clean(&mnre_simple);
1334 : }
1335 1071 : has_nil |= is_bit_nil(ret[p]);
1336 : }
1337 111 : bat_iterator_end(&pi);
1338 112 : if (b)
1339 112 : bat_iterator_end(&bi);
1340 : } else {
1341 972 : const char *pat = *getArgReference_str(stk, pci, 2);
1342 972 : if ((msg = choose_like_path(&use_re, &use_strcmp, &empty,
1343 : pat, *esc)) != MAL_SUCCEED)
1344 5 : goto bailout;
1345 :
1346 967 : bi = bat_iterator(b);
1347 1868 : MT_thread_setalgorithm(empty ? "pcrelike: trivially empty" : use_strcmp
1348 : ? "pcrelike: pattern matching using strcmp" :
1349 900 : use_re ? "pcrelike: pattern matching using RE" :
1350 : "pcrelike: pattern matching using pcre");
1351 :
1352 969 : if (empty) {
1353 43 : for (BUN p = 0; p < q; p++)
1354 26 : ret[p] = bit_nil;
1355 : has_nil = true;
1356 : } else {
1357 951 : if ((msg = mnre_like_build(&mnre_simple, pat, isensitive, use_strcmp,
1358 952 : (unsigned char) **esc)) != MAL_SUCCEED) {
1359 0 : bat_iterator_end(&bi);
1360 0 : goto bailout;
1361 : }
1362 6512 : for (BUN p = 0; p < q; p++) {
1363 5561 : const char *s = BUNtvar(bi, p);
1364 5574 : ret[p] = mnre_like_proj_apply(s, mnre_simple, pat, isensitive,
1365 : anti, use_strcmp);
1366 5560 : has_nil |= is_bit_nil(ret[p]);
1367 : }
1368 : }
1369 968 : bat_iterator_end(&bi);
1370 : }
1371 :
1372 1086 : bailout:
1373 1086 : mnre_like_clean(&mnre_simple);
1374 1086 : if (bn && !msg) {
1375 1081 : BATsetcount(bn, q);
1376 1081 : bn->tnil = has_nil;
1377 1081 : bn->tnonil = !has_nil;
1378 1081 : bn->tkey = BATcount(bn) <= 1;
1379 1081 : bn->tsorted = BATcount(bn) <= 1;
1380 1081 : bn->trevsorted = BATcount(bn) <= 1;
1381 1081 : *r = bn->batCacheid;
1382 1081 : BBPkeepref(bn);
1383 5 : } else if (bn)
1384 5 : BBPreclaim(bn);
1385 1085 : BBPreclaim(b);
1386 1084 : BBPreclaim(pbn);
1387 1083 : return msg;
1388 : }
1389 :
1390 : static str
1391 926 : BATPCRElike(Client cntxt, MalBlkPtr mb, MalStkPtr stk, InstrPtr pci)
1392 : {
1393 926 : const char *esc = *getArgReference_str(stk, pci, 3);
1394 926 : const bit *ci = getArgReference_bit(stk, pci, 4);
1395 926 : bit no = FALSE;
1396 :
1397 926 : return BATPCRElike_imp(cntxt, mb, stk, pci, &esc, ci, &no);
1398 : }
1399 :
1400 : static str
1401 158 : BATPCREnotlike(Client cntxt, MalBlkPtr mb, MalStkPtr stk, InstrPtr pci)
1402 : {
1403 158 : const char *esc = *getArgReference_str(stk, pci, 3);
1404 158 : const bit *ci = getArgReference_bit(stk, pci, 4);
1405 158 : bit yes = TRUE;
1406 :
1407 158 : return BATPCRElike_imp(cntxt, mb, stk, pci, &esc, ci, &yes);
1408 : }
1409 :
1410 : /* scan select loop with or without candidates */
1411 : #define pcrescanloop(TEST, KEEP_NULLS) \
1412 : do { \
1413 : TRC_DEBUG(ALGO, \
1414 : "PCREselect(b=%s#"BUNFMT",anti=%d): " \
1415 : "scanselect %s\n", BATgetId(b), BATcount(b), \
1416 : anti, #TEST); \
1417 : if (!s || BATtdense(s)) { \
1418 : for (; p < q; p++) { \
1419 : GDK_CHECK_TIMEOUT(qry_ctx, counter, \
1420 : GOTO_LABEL_TIMEOUT_HANDLER(bailout, qry_ctx)); \
1421 : const char *restrict v = BUNtvar(bi, p - off); \
1422 : if ((TEST) || ((KEEP_NULLS) && strNil(v))) \
1423 : vals[cnt++] = p; \
1424 : } \
1425 : } else { \
1426 : for (; p < ncands; p++) { \
1427 : GDK_CHECK_TIMEOUT(qry_ctx, counter, \
1428 : GOTO_LABEL_TIMEOUT_HANDLER(bailout, qry_ctx)); \
1429 : oid o = canditer_next(ci); \
1430 : const char *restrict v = BUNtvar(bi, o - off); \
1431 : if ((TEST) || ((KEEP_NULLS) && strNil(v))) \
1432 : vals[cnt++] = o; \
1433 : } \
1434 : } \
1435 : } while (0)
1436 :
1437 : static str
1438 6723 : mnre_likeselect(BAT *bn, BAT *b, BAT *s, struct canditer *ci, BUN p, BUN q,
1439 : BUN *rcnt, const char *pat, bool caseignore, bool anti,
1440 : bool use_strcmp, uint32_t esc, bool keep_nulls)
1441 : {
1442 6723 : BATiter bi = bat_iterator(b);
1443 6738 : BUN cnt = 0, ncands = ci->ncand;
1444 6738 : oid off = b->hseqbase, *restrict vals = Tloc(bn, 0);
1445 6738 : struct RE *re = NULL;
1446 6738 : str msg = MAL_SUCCEED;
1447 :
1448 6738 : size_t counter = 0;
1449 6738 : QryCtx *qry_ctx = MT_thread_get_qry_ctx();
1450 :
1451 6738 : if ((msg = mnre_like_build(&re, pat, caseignore, use_strcmp,
1452 : esc)) != MAL_SUCCEED)
1453 0 : goto bailout;
1454 :
1455 6716 : if (use_strcmp) {
1456 133 : if (caseignore) {
1457 47 : if (anti)
1458 58 : pcrescanloop(!strNil(v)
1459 : && GDKstrcasecmp(v, pat) != 0, keep_nulls);
1460 : else
1461 710 : pcrescanloop(!strNil(v)
1462 : && GDKstrcasecmp(v, pat) == 0, keep_nulls);
1463 : } else {
1464 86 : if (anti)
1465 62 : pcrescanloop(!strNil(v) && strcmp(v, pat) != 0, keep_nulls);
1466 : else
1467 9331 : pcrescanloop(!strNil(v) && strcmp(v, pat) == 0, keep_nulls);
1468 : }
1469 : } else {
1470 6583 : if (caseignore) {
1471 143 : if (anti) {
1472 44 : pcrescanloop(!strNil(v)
1473 : && !mnre_match(v, re), keep_nulls);
1474 : } else {
1475 11445 : pcrescanloop(!strNil(v)
1476 : && mnre_match(v, re), keep_nulls);
1477 : }
1478 : } else {
1479 6440 : if (anti)
1480 43440 : pcrescanloop(!strNil(v)
1481 : && !mnre_match(v, re), keep_nulls);
1482 : else
1483 154955 : pcrescanloop(!strNil(v)
1484 : && mnre_match(v, re), keep_nulls);
1485 : }
1486 : }
1487 :
1488 54 : bailout:
1489 6714 : bat_iterator_end(&bi);
1490 6733 : mnre_like_clean(&re);
1491 6739 : *rcnt = cnt;
1492 6739 : return msg;
1493 : }
1494 :
1495 : static str
1496 6724 : PCRElikeselect(bat *ret, const bat *bid, const bat *sid, const char *const *pat,
1497 : const char *const *esc, const bit *caseignore, const bit *anti)
1498 : {
1499 6724 : BAT *b, *s = NULL, *bn = NULL, *old_s = NULL;
1500 6724 : str msg = MAL_SUCCEED;
1501 6724 : bool use_re = false,
1502 6724 : use_strcmp = false,
1503 6724 : empty = false;
1504 6724 : bool with_strimps = false;
1505 6724 : bool with_strimps_anti = false;
1506 6724 : BUN p = 0, q = 0, rcnt = 0;
1507 6724 : struct canditer ci;
1508 :
1509 6724 : if ((b = BATdescriptor(*bid)) == NULL) {
1510 0 : msg = createException(MAL, "algebra.likeselect",
1511 : SQLSTATE(HY002) RUNTIME_OBJECT_MISSING);
1512 0 : goto bailout;
1513 : }
1514 6740 : if (sid && !is_bat_nil(*sid) && (s = BATdescriptor(*sid)) == NULL) {
1515 0 : msg = createException(MAL, "algebra.likeselect",
1516 : SQLSTATE(HY002) RUNTIME_OBJECT_MISSING);
1517 0 : goto bailout;
1518 : }
1519 :
1520 6739 : assert(ATOMstorage(b->ttype) == TYPE_str);
1521 :
1522 6739 : if ((msg = choose_like_path(&use_re, &use_strcmp, &empty,
1523 : *pat, *esc)) != MAL_SUCCEED)
1524 0 : goto bailout;
1525 :
1526 6664 : if (empty) {
1527 0 : if (!(bn = BATdense(0, 0, 0)))
1528 0 : msg = createException(MAL, "algebra.likeselect",
1529 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
1530 :
1531 0 : goto bailout;
1532 : }
1533 : /* Since the strimp pre-filtering of a LIKE query produces a superset of the actual result the complement of that
1534 : * set will necessarily reject some of the matching entries in the NOT LIKE query.
1535 : *
1536 : * In this case we run the PCRElikeselect as a LIKE query with strimps and return the complement of the result,
1537 : * taking extra care to not return NULLs. This currently means that we do not run strimps for NOT LIKE queries if
1538 : * the BAT contains NULLs.
1539 : */
1540 6664 : if (BAThasstrimps(b)) {
1541 48 : if (STRMPcreate(b, NULL) == GDK_SUCCEED) {
1542 48 : BAT *tmp_s = STRMPfilter(b, s, *pat, *anti);
1543 48 : if (tmp_s) {
1544 48 : old_s = s;
1545 48 : s = tmp_s;
1546 48 : if (!*anti)
1547 : with_strimps = true;
1548 : else
1549 0 : with_strimps_anti = true;
1550 : }
1551 : } else { /* If we cannot filter with the strimp just continue normally */
1552 0 : GDKclrerr();
1553 : }
1554 : }
1555 :
1556 :
1557 6739 : MT_thread_setalgorithm(use_strcmp
1558 6739 : ? (with_strimps ?
1559 : "pcrelike: pattern matching using strcmp with strimps"
1560 : : (with_strimps_anti ?
1561 : "pcrelike: pattern matching using strcmp with strimps anti"
1562 6739 : : "pcrelike: pattern matching using strcmp")) :
1563 6606 : use_re ? (with_strimps ?
1564 : "pcrelike: pattern matching using RE with strimps"
1565 : : (with_strimps_anti ?
1566 : "pcrelike: patterm matching using RE with strimps anti"
1567 : :
1568 : "pcrelike: pattern matching using RE"))
1569 : : (with_strimps ?
1570 : "pcrelike: pattern matching using pcre with strimps"
1571 : : (with_strimps_anti ?
1572 : "pcrelike: pattermatching using pcre with strimps anti"
1573 : : "pcrelike: pattern matching using pcre")));
1574 :
1575 6736 : canditer_init(&ci, b, s);
1576 6738 : if (!(bn = COLnew(0, TYPE_oid, ci.ncand, TRANSIENT))) {
1577 0 : msg = createException(MAL, "algebra.likeselect",
1578 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
1579 0 : goto bailout;
1580 : }
1581 :
1582 6732 : if (!s || BATtdense(s)) {
1583 1666 : if (s) {
1584 5012 : assert(BATtdense(s));
1585 5012 : p = (BUN) s->tseqbase;
1586 5012 : q = p + BATcount(s);
1587 5012 : if ((oid) p < b->hseqbase)
1588 : p = b->hseqbase;
1589 5012 : if ((oid) q > b->hseqbase + BATcount(b))
1590 : q = b->hseqbase + BATcount(b);
1591 : } else {
1592 1666 : p = b->hseqbase;
1593 1666 : q = BATcount(b) + b->hseqbase;
1594 : }
1595 : }
1596 :
1597 6732 : msg = mnre_likeselect(bn, b, s, &ci, p, q, &rcnt, *pat, *caseignore, *anti
1598 1878 : && !with_strimps_anti, use_strcmp,
1599 6732 : (unsigned char) **esc, with_strimps_anti);
1600 :
1601 6737 : if (!msg) { /* set some properties */
1602 6739 : BATsetcount(bn, rcnt);
1603 6726 : bn->tsorted = true;
1604 6726 : bn->trevsorted = bn->batCount <= 1;
1605 6726 : bn->tkey = true;
1606 6726 : bn->tnil = false;
1607 6726 : bn->tnonil = true;
1608 6726 : bn->tseqbase = rcnt == 0 ? 0 : rcnt == 1 ? *(const oid *) Tloc(bn, 0) : rcnt == b->batCount ? b->hseqbase : oid_nil;
1609 6726 : if (with_strimps_anti) {
1610 : /* Reverse the result taking into account the original candidate list. */
1611 : // BAT *rev = BATdiffcand(BATdense(b->hseqbase, 0, b->batCount), bn);
1612 0 : BAT *rev;
1613 0 : if (old_s) {
1614 0 : rev = BATdiffcand(old_s, bn);
1615 : #ifndef NDEBUG
1616 0 : BAT *is = BATintersectcand(old_s, bn);
1617 0 : if (is) {
1618 0 : assert(is->batCount == bn->batCount);
1619 0 : BBPreclaim(is);
1620 : }
1621 0 : assert(rev->batCount == old_s->batCount - bn->batCount);
1622 : #endif
1623 : }
1624 :
1625 : else
1626 0 : rev = BATnegcands(0, b->batCount, bn);
1627 : /* BAT *rev = BATnegcands(0, b->batCount, bn); */
1628 0 : BBPunfix(bn->batCacheid);
1629 0 : bn = rev;
1630 : }
1631 : }
1632 :
1633 :
1634 6724 : bailout:
1635 6724 : BBPreclaim(b);
1636 6737 : BBPreclaim(s);
1637 6733 : BBPreclaim(old_s);
1638 6734 : if (bn && !msg) {
1639 6734 : *ret = bn->batCacheid;
1640 6734 : BBPkeepref(bn);
1641 0 : } else if (bn)
1642 0 : BBPreclaim(bn);
1643 6737 : return msg;
1644 : }
1645 :
1646 : #define APPEND(b, o) (((oid *) b->theap->base)[b->batCount++] = (o))
1647 : #define VALUE(s, x) (s##vars + VarHeapVal(s##vals, (x), s##i.width))
1648 :
1649 : /* nested loop implementation for PCRE join */
1650 : #define pcre_join_loop(STRCMP, MNRE_MATCH) \
1651 : do { \
1652 : for (BUN ridx = 0; ridx < rci.ncand; ridx++) { \
1653 : ro = canditer_next(&rci); \
1654 : vr = VALUE(r, ro - rbase); \
1655 : nl = 0; \
1656 : use_re = use_strcmp = empty = false; \
1657 : if ((msg = choose_like_path(&use_re, &use_strcmp, &empty, vr, esc))) \
1658 : goto bailout; \
1659 : if (!empty) { \
1660 : if ((msg = mnre_like_build(&re, vr, false, use_strcmp, (unsigned char) *esc)) != MAL_SUCCEED) \
1661 : goto bailout; \
1662 : canditer_reset(&lci); \
1663 : TIMEOUT_LOOP_IDX_DECL(lidx, lci.ncand, qry_ctx) { \
1664 : lo = canditer_next(&lci); \
1665 : vl = VALUE(l, lo - lbase); \
1666 : if (strNil(vl)) { \
1667 : continue; \
1668 : } else { \
1669 : if (use_strcmp) { \
1670 : if (STRCMP) \
1671 : continue; \
1672 : } else { \
1673 : assert(re); \
1674 : if (MNRE_MATCH) \
1675 : continue; \
1676 : } \
1677 : } \
1678 : if (BATcount(r1) == BATcapacity(r1)) { \
1679 : newcap = BATgrows(r1); \
1680 : BATsetcount(r1, BATcount(r1)); \
1681 : if (r2) \
1682 : BATsetcount(r2, BATcount(r2)); \
1683 : if (BATextend(r1, newcap) != GDK_SUCCEED || (r2 && BATextend(r2, newcap) != GDK_SUCCEED)) { \
1684 : msg = createException(MAL, "pcre.join", SQLSTATE(HY013) MAL_MALLOC_FAIL); \
1685 : goto bailout; \
1686 : } \
1687 : assert(!r2 || BATcapacity(r1) == BATcapacity(r2)); \
1688 : } \
1689 : if (BATcount(r1) > 0) { \
1690 : if (lastl + 1 != lo) \
1691 : r1->tseqbase = oid_nil; \
1692 : if (nl == 0) { \
1693 : if (r2) \
1694 : r2->trevsorted = false; \
1695 : if (lastl > lo) { \
1696 : r1->tsorted = false; \
1697 : r1->tkey = false; \
1698 : } else if (lastl < lo) { \
1699 : r1->trevsorted = false; \
1700 : } else { \
1701 : r1->tkey = false; \
1702 : } \
1703 : } \
1704 : } \
1705 : APPEND(r1, lo); \
1706 : if (r2) \
1707 : APPEND(r2, ro); \
1708 : lastl = lo; \
1709 : nl++; \
1710 : } \
1711 : mnre_like_clean(&re); \
1712 : TIMEOUT_CHECK(qry_ctx, \
1713 : GOTO_LABEL_TIMEOUT_HANDLER(bailout, qry_ctx)); \
1714 : } \
1715 : if (r2) { \
1716 : if (nl > 1) { \
1717 : r2->tkey = false; \
1718 : r2->tseqbase = oid_nil; \
1719 : r1->trevsorted = false; \
1720 : } else if (nl == 0) { \
1721 : rskipped = BATcount(r2) > 0; \
1722 : } else if (rskipped) { \
1723 : r2->tseqbase = oid_nil; \
1724 : } \
1725 : } else if (nl > 1) { \
1726 : r1->trevsorted = false; \
1727 : } \
1728 : } \
1729 : } while (0)
1730 :
1731 : static char *
1732 59 : pcrejoin(BAT *r1, BAT *r2, BAT *l, BAT *r, BAT *sl, BAT *sr, const char *esc,
1733 : bit caseignore, bit anti)
1734 : {
1735 59 : struct canditer lci, rci;
1736 59 : const char *lvals, *rvals, *lvars, *rvars, *vl, *vr;
1737 59 : int rskipped = 0; /* whether we skipped values in r */
1738 59 : oid lbase, rbase, lo, ro, lastl = 0; /* last value inserted into r1 */
1739 59 : BUN nl, newcap;
1740 59 : char *msg = MAL_SUCCEED;
1741 59 : struct RE *re = NULL;
1742 59 : bool use_re = false,
1743 59 : use_strcmp = false,
1744 59 : empty = false;
1745 59 : lng t0 = 0;
1746 :
1747 59 : QryCtx *qry_ctx = MT_thread_get_qry_ctx();
1748 :
1749 59 : TRC_DEBUG_IF(ALGO) t0 = GDKusec();
1750 :
1751 177 : assert(ATOMtype(l->ttype) == ATOMtype(r->ttype));
1752 59 : assert(ATOMtype(l->ttype) == TYPE_str);
1753 :
1754 59 : BAT *ol = NULL, *or = NULL;
1755 59 : if (caseignore) {
1756 11 : ol = l;
1757 11 : or = r;
1758 11 : l = BATcasefold(l, NULL);
1759 10 : r = BATcasefold(r, NULL);
1760 11 : if (l == NULL || r == NULL) {
1761 0 : BBPreclaim(l);
1762 0 : BBPreclaim(r);
1763 0 : throw(MAL, "pcre.join", GDK_EXCEPTION);
1764 : }
1765 : }
1766 :
1767 59 : canditer_init(&lci, l, sl);
1768 59 : canditer_init(&rci, r, sr);
1769 :
1770 59 : BATiter li = bat_iterator(l);
1771 59 : BATiter ri = bat_iterator(r);
1772 59 : lbase = l->hseqbase;
1773 59 : rbase = r->hseqbase;
1774 59 : lvals = (const char *) li.base;
1775 59 : rvals = (const char *) ri.base;
1776 59 : assert(ri.vh && r->ttype);
1777 59 : lvars = li.vh->base;
1778 59 : rvars = ri.vh->base;
1779 :
1780 59 : r1->tkey = true;
1781 59 : r1->tsorted = true;
1782 59 : r1->trevsorted = true;
1783 59 : r1->tnil = false;
1784 59 : r1->tnonil = true;
1785 59 : if (r2) {
1786 42 : r2->tkey = true;
1787 42 : r2->tsorted = true;
1788 42 : r2->trevsorted = true;
1789 42 : r2->tnil = false;
1790 42 : r2->tnonil = true;
1791 : }
1792 :
1793 59 : if (anti) {
1794 654 : pcre_join_loop(strcmp(vl, vr) == 0, mnre_match(vl, re));
1795 : } else {
1796 476 : pcre_join_loop(strcmp(vl, vr) != 0, !mnre_match(vl, re));
1797 : }
1798 59 : bat_iterator_end(&li);
1799 58 : bat_iterator_end(&ri);
1800 58 : if (ol) {
1801 10 : BBPreclaim(l);
1802 11 : BBPreclaim(r);
1803 11 : l = ol;
1804 11 : r = or;
1805 : }
1806 :
1807 59 : assert(!r2 || BATcount(r1) == BATcount(r2));
1808 : /* also set other bits of heap to correct value to indicate size */
1809 59 : BATsetcount(r1, BATcount(r1));
1810 58 : if (r2)
1811 41 : BATsetcount(r2, BATcount(r2));
1812 58 : if (BATcount(r1) > 0) {
1813 43 : if (BATtdense(r1))
1814 14 : r1->tseqbase = ((oid *) r1->theap->base)[0];
1815 43 : if (r2 && BATtdense(r2))
1816 32 : r2->tseqbase = ((oid *) r2->theap->base)[0];
1817 : } else {
1818 15 : r1->tseqbase = 0;
1819 15 : if (r2)
1820 8 : r2->tseqbase = 0;
1821 : }
1822 :
1823 40 : if (r2)
1824 41 : TRC_DEBUG(ALGO,
1825 : "l=%s#" BUNFMT "[%s]%s%s,"
1826 : "r=%s#" BUNFMT "[%s]%s%s,sl=%s#" BUNFMT "%s%s,"
1827 : "sr=%s#" BUNFMT "%s%s -> "
1828 : "%s#" BUNFMT "%s%s,%s#" BUNFMT "%s%s (" LLFMT " usec)\n",
1829 : BATgetId(l), BATcount(l), ATOMname(l->ttype),
1830 : l->tsorted ? "-sorted" : "",
1831 : l->trevsorted ? "-revsorted" : "",
1832 : BATgetId(r), BATcount(r), ATOMname(r->ttype),
1833 : r->tsorted ? "-sorted" : "",
1834 : r->trevsorted ? "-revsorted" : "",
1835 : sl ? BATgetId(sl) : "NULL", sl ? BATcount(sl) : 0,
1836 : sl && sl->tsorted ? "-sorted" : "",
1837 : sl && sl->trevsorted ? "-revsorted" : "",
1838 : sr ? BATgetId(sr) : "NULL", sr ? BATcount(sr) : 0,
1839 : sr && sr->tsorted ? "-sorted" : "",
1840 : sr && sr->trevsorted ? "-revsorted" : "",
1841 : BATgetId(r1), BATcount(r1),
1842 : r1->tsorted ? "-sorted" : "",
1843 : r1->trevsorted ? "-revsorted" : "",
1844 : BATgetId(r2), BATcount(r2),
1845 : r2->tsorted ? "-sorted" : "",
1846 : r2->trevsorted ? "-revsorted" : "", GDKusec() - t0);
1847 : else
1848 17 : TRC_DEBUG(ALGO,
1849 : "l=%s#" BUNFMT "[%s]%s%s,"
1850 : "r=%s#" BUNFMT "[%s]%s%s,sl=%s#" BUNFMT "%s%s,"
1851 : "sr=%s#" BUNFMT "%s%s -> "
1852 : "%s#" BUNFMT "%s%s (" LLFMT " usec)\n",
1853 : BATgetId(l), BATcount(l), ATOMname(l->ttype),
1854 : l->tsorted ? "-sorted" : "",
1855 : l->trevsorted ? "-revsorted" : "",
1856 : BATgetId(r), BATcount(r), ATOMname(r->ttype),
1857 : r->tsorted ? "-sorted" : "",
1858 : r->trevsorted ? "-revsorted" : "",
1859 : sl ? BATgetId(sl) : "NULL", sl ? BATcount(sl) : 0,
1860 : sl && sl->tsorted ? "-sorted" : "",
1861 : sl && sl->trevsorted ? "-revsorted" : "",
1862 : sr ? BATgetId(sr) : "NULL", sr ? BATcount(sr) : 0,
1863 : sr && sr->tsorted ? "-sorted" : "",
1864 : sr && sr->trevsorted ? "-revsorted" : "",
1865 : BATgetId(r1), BATcount(r1),
1866 : r1->tsorted ? "-sorted" : "",
1867 : r1->trevsorted ? "-revsorted" : "", GDKusec() - t0);
1868 : return MAL_SUCCEED;
1869 :
1870 0 : bailout:
1871 0 : bat_iterator_end(&li);
1872 0 : bat_iterator_end(&ri);
1873 0 : mnre_like_clean(&re);
1874 0 : assert(msg != MAL_SUCCEED);
1875 : return msg;
1876 : }
1877 :
1878 : static str
1879 55 : PCREjoin(bat *r1, bat *r2, bat lid, bat rid, bat slid, bat srid, bat elid,
1880 : bat ciid, bit anti)
1881 : {
1882 55 : BAT *left = NULL, *right = NULL, *escape = NULL, *caseignore = NULL,
1883 55 : *candleft = NULL, *candright = NULL;
1884 55 : BAT *result1 = NULL, *result2 = NULL;
1885 55 : char *msg = MAL_SUCCEED;
1886 55 : const char *esc = "";
1887 55 : bit ci;
1888 55 : BATiter bi;
1889 :
1890 55 : if ((left = BATdescriptor(lid)) == NULL)
1891 0 : goto fail;
1892 59 : if ((right = BATdescriptor(rid)) == NULL)
1893 0 : goto fail;
1894 59 : if ((escape = BATdescriptor(elid)) == NULL)
1895 0 : goto fail;
1896 59 : if ((caseignore = BATdescriptor(ciid)) == NULL)
1897 0 : goto fail;
1898 59 : if (!is_bat_nil(slid) && (candleft = BATdescriptor(slid)) == NULL)
1899 0 : goto fail;
1900 59 : if (!is_bat_nil(srid) && (candright = BATdescriptor(srid)) == NULL)
1901 0 : goto fail;
1902 59 : result1 = COLnew(0, TYPE_oid, BATcount(left), TRANSIENT);
1903 59 : if (r2)
1904 42 : result2 = COLnew(0, TYPE_oid, BATcount(left), TRANSIENT);
1905 59 : if (!result1 || (r2 && !result2)) {
1906 0 : msg = createException(MAL, "pcre.join",
1907 : SQLSTATE(HY013) MAL_MALLOC_FAIL);
1908 0 : goto fail;
1909 : }
1910 59 : result1->tnil = false;
1911 59 : result1->tnonil = true;
1912 59 : result1->tkey = true;
1913 59 : result1->tsorted = true;
1914 59 : result1->trevsorted = true;
1915 59 : result1->tseqbase = 0;
1916 59 : if (r2) {
1917 42 : result2->tnil = false;
1918 42 : result2->tnonil = true;
1919 42 : result2->tkey = true;
1920 42 : result2->tsorted = true;
1921 42 : result2->trevsorted = true;
1922 42 : result2->tseqbase = 0;
1923 : }
1924 59 : if (BATcount(escape) != 1) {
1925 0 : msg = createException(MAL, "pcre.join",
1926 : SQLSTATE(42000)
1927 : "At the moment, only one value is allowed for the escape input at pcre join");
1928 0 : goto fail;
1929 : }
1930 59 : if (BATcount(caseignore) != 1) {
1931 0 : msg = createException(MAL, "pcre.join",
1932 : SQLSTATE(42000)
1933 : "At the moment, only one value is allowed for the case ignore input at pcre join");
1934 0 : goto fail;
1935 : }
1936 59 : bi = bat_iterator(caseignore);
1937 59 : ci = *(bit *) BUNtloc(bi, 0);
1938 59 : bat_iterator_end(&bi);
1939 59 : bi = bat_iterator(escape);
1940 59 : esc = BUNtvar(bi, 0);
1941 59 : msg = pcrejoin(result1, result2, left, right, candleft, candright, esc, ci,
1942 : anti);
1943 57 : bat_iterator_end(&bi);
1944 59 : if (msg)
1945 0 : goto fail;
1946 59 : *r1 = result1->batCacheid;
1947 59 : BBPkeepref(result1);
1948 59 : if (r2) {
1949 42 : *r2 = result2->batCacheid;
1950 42 : BBPkeepref(result2);
1951 : }
1952 59 : BBPunfix(left->batCacheid);
1953 59 : BBPunfix(right->batCacheid);
1954 59 : BBPreclaim(escape);
1955 59 : BBPreclaim(caseignore);
1956 59 : BBPreclaim(candleft);
1957 59 : BBPreclaim(candright);
1958 : return MAL_SUCCEED;
1959 :
1960 0 : fail:
1961 0 : BBPreclaim(left);
1962 0 : BBPreclaim(right);
1963 0 : BBPreclaim(escape);
1964 0 : BBPreclaim(caseignore);
1965 0 : BBPreclaim(candleft);
1966 0 : BBPreclaim(candright);
1967 0 : BBPreclaim(result1);
1968 0 : BBPreclaim(result2);
1969 0 : if (msg)
1970 : return msg;
1971 0 : throw(MAL, "pcre.join", SQLSTATE(HY002) RUNTIME_OBJECT_MISSING);
1972 : }
1973 :
1974 : static str
1975 38 : LIKEjoin(bat *r1, bat *r2, const bat *lid, const bat *rid, const bat *elid,
1976 : const bat *cid, const bat *slid, const bat *srid,
1977 : const bit *nil_matches, const lng *estimate, const bit *anti)
1978 : {
1979 38 : (void) nil_matches;
1980 38 : (void) estimate;
1981 38 : return PCREjoin(r1, r2, *lid, *rid, slid ? *slid : 0, srid ? *srid : 0,
1982 38 : *elid, *cid, *anti);
1983 : }
1984 :
1985 : static str
1986 17 : LIKEjoin1(bat *r1, const bat *lid, const bat *rid, const bat *elid,
1987 : const bat *cid, const bat *slid, const bat *srid,
1988 : const bit *nil_matches, const lng *estimate, const bit *anti)
1989 : {
1990 17 : (void) nil_matches;
1991 17 : (void) estimate;
1992 17 : return PCREjoin(r1, NULL, *lid, *rid, slid ? *slid : 0, srid ? *srid : 0,
1993 17 : *elid, *cid, *anti);
1994 : }
1995 :
1996 : #include "mel.h"
1997 : mel_atom pcre_init_atoms[] = {
1998 : { .name="pcre", }, { .cmp=NULL }
1999 : };
2000 : mel_func pcre_init_funcs[] = {
2001 : command("pcre", "index", PCREindex, false, "match a pattern, return matched position (or 0 when not found)", args(1,3, arg("",int),arg("pat",pcre),arg("s",str))),
2002 : command("pcre", "match", PCREmatch, false, "Perl Compatible Regular Expression pattern matching against a string", args(1,3, arg("",bit),arg("s",str),arg("pat",str))),
2003 : command("pcre", "imatch", PCREimatch, false, "Caseless Perl Compatible Regular Expression pattern matching against a string", args(1,3, arg("",bit),arg("s",str),arg("pat",str))),
2004 : command("pcre", "patindex", PCREpatindex, false, "Location of the first POSIX pattern matching against a string", args(1,3, arg("",int),arg("pat",str),arg("s",str))),
2005 : command("pcre", "replace", PCREreplace_wrap, false, "Replace _all_ matches of \"pattern\" in \"origin_str\" with \"replacement\".\nParameter \"flags\" accept these flags: 'i', 'm', 's', and 'x'.\n'e': if present, an empty string is considered to be a valid match\n'i': if present, the match operates in case-insensitive mode.\nOtherwise, in case-sensitive mode.\n'm': if present, the match operates in multi-line mode.\n's': if present, the match operates in \"dot-all\"\nThe specifications of the flags can be found in \"man pcreapi\"\nThe flag letters may be repeated.\nNo other letters than 'e', 'i', 'm', 's' and 'x' are allowed in \"flags\".\nReturns the replaced string, or if no matches found, the original string.", args(1,5, arg("",str),arg("origin",str),arg("pat",str),arg("repl",str),arg("flags",str))),
2006 : command("pcre", "replace_first", PCREreplacefirst_wrap, false, "Replace _the first_ match of \"pattern\" in \"origin_str\" with \"replacement\".\nParameter \"flags\" accept these flags: 'i', 'm', 's', and 'x'.\n'e': if present, an empty string is considered to be a valid match\n'i': if present, the match operates in case-insensitive mode.\nOtherwise, in case-sensitive mode.\n'm': if present, the match operates in multi-line mode.\n's': if present, the match operates in \"dot-all\"\nThe specifications of the flags can be found in \"man pcreapi\"\nThe flag letters may be repeated.\nNo other letters than 'e', 'i', 'm', 's' and 'x' are allowed in \"flags\".\nReturns the replaced string, or if no matches found, the original string.", args(1,5, arg("",str),arg("origin",str),arg("pat",str),arg("repl",str),arg("flags",str))),
2007 : command("pcre", "pcre_quote", PCREquote, false, "Return a PCRE pattern string that matches the argument exactly.", args(1,2, arg("",str),arg("s",str))),
2008 : command("pcre", "sql2pcre", PCREsql2pcre, false, "Convert a SQL like pattern with the given escape character into a PCRE pattern.", args(1,3, arg("",str),arg("pat",str),arg("esc",str))),
2009 : command("str", "replace", PCREreplace_wrap, false, "", args(1,5, arg("",str),arg("origin",str),arg("pat",str),arg("repl",str),arg("flags",str))),
2010 : command("batpcre", "replace", PCREreplace_bat_wrap, false, "", args(1,5, batarg("",str),batarg("orig",str),arg("pat",str),arg("repl",str),arg("flag",str))),
2011 : command("batpcre", "replace_first", PCREreplacefirst_bat_wrap, false, "", args(1,5, batarg("",str),batarg("orig",str),arg("pat",str),arg("repl",str),arg("flag",str))),
2012 : command("algebra", "like", PCRElike, false, "", args(1,5, arg("",bit),arg("s",str),arg("pat",str),arg("esc",str),arg("caseignore",bit))),
2013 : command("algebra", "not_like", PCREnotlike, false, "", args(1,5, arg("",bit),arg("s",str),arg("pat",str),arg("esc",str),arg("caseignore",bit))),
2014 : pattern("batalgebra", "like", BATPCRElike, false, "", args(1,5, batarg("",bit),batarg("s",str),arg("pat",str),arg("esc",str),arg("caseignore",bit))),
2015 : pattern("batalgebra", "like", BATPCRElike, false, "", args(1,5, batarg("",bit),arg("s",str),batarg("pat",str),arg("esc",str),arg("caseignore",bit))),
2016 : pattern("batalgebra", "like", BATPCRElike, false, "", args(1,5, batarg("",bit),batarg("s",str),batarg("pat",str),arg("esc",str),arg("caseignore",bit))),
2017 : pattern("batalgebra", "not_like", BATPCREnotlike, false, "", args(1,5, batarg("",bit),batarg("s",str),arg("pat",str),arg("esc",str),arg("caseignore",bit))),
2018 : pattern("batalgebra", "not_like", BATPCREnotlike, false, "", args(1,5, batarg("",bit),arg("s",str),batarg("pat",str),arg("esc",str),arg("caseignore",bit))),
2019 : pattern("batalgebra", "not_like", BATPCREnotlike, false, "", args(1,5, batarg("",bit),batarg("s",str),batarg("pat",str),arg("esc",str),arg("caseignore",bit))),
2020 : command("algebra", "likeselect", PCRElikeselect, false, "Select all head values of the first input BAT for which the\ntail value is \"like\" the given (SQL-style) pattern and for\nwhich the head value occurs in the tail of the second input\nBAT.\nInput is a dense-headed BAT, output is a dense-headed BAT with in\nthe tail the head value of the input BAT for which the\nrelationship holds. The output BAT is sorted on the tail value.", args(1,7, batarg("",oid),batarg("b",str),batarg("s",oid),arg("pat",str),arg("esc",str),arg("caseignore",bit),arg("anti",bit))),
2021 : command("algebra", "likejoin", LIKEjoin, false, "Join the string bat L with the pattern bat R\nwith optional candidate lists SL and SR using pattern escape string ESC\nand doing a case sensitive match.\nThe result is two aligned bats with oids of matching rows.", args(2,11, batarg("",oid),batarg("",oid),batarg("l",str),batarg("r",str),batarg("esc",str),batarg("caseignore",bit),batarg("sl",oid),batarg("sr",oid),arg("nil_matches",bit),arg("estimate",lng),arg("anti",bit))),
2022 : command("algebra", "likejoin", LIKEjoin1, false, "The same as LIKEjoin_esc, but only produce one output", args(1,10,batarg("",oid),batarg("l",str),batarg("r",str),batarg("esc",str),batarg("caseignore",bit),batarg("sl",oid),batarg("sr",oid),arg("nil_matches",bit),arg("estimate",lng), arg("anti",bit))),
2023 : { .imp=NULL }
2024 : };
2025 : #include "mal_import.h"
2026 : #ifdef _MSC_VER
2027 : #undef read
2028 : #pragma section(".CRT$XCU",read)
2029 : #endif
2030 345 : LIB_STARTUP_FUNC(init_pcre_mal)
2031 345 : { mal_module("pcre", pcre_init_atoms, pcre_init_funcs); }
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