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Mbstring.php
001 <?php
002
003 /*
004 * This file is part of the Symfony package.
005 *
006 * (c) Fabien Potencier <fabien@symfony.com>
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Symfony\Polyfill\Mbstring;
013
014 /**
015 * Partial mbstring implementation in PHP, iconv based, UTF-8 centric.
016 *
017 * Implemented:
018 * - mb_chr - Returns a specific character from its Unicode code point
019 * - mb_convert_encoding - Convert character encoding
020 * - mb_convert_variables - Convert character code in variable(s)
021 * - mb_decode_mimeheader - Decode string in MIME header field
022 * - mb_encode_mimeheader - Encode string for MIME header XXX NATIVE IMPLEMENTATION IS REALLY BUGGED
023 * - mb_decode_numericentity - Decode HTML numeric string reference to character
024 * - mb_encode_numericentity - Encode character to HTML numeric string reference
025 * - mb_convert_case - Perform case folding on a string
026 * - mb_detect_encoding - Detect character encoding
027 * - mb_get_info - Get internal settings of mbstring
028 * - mb_http_input - Detect HTTP input character encoding
029 * - mb_http_output - Set/Get HTTP output character encoding
030 * - mb_internal_encoding - Set/Get internal character encoding
031 * - mb_list_encodings - Returns an array of all supported encodings
032 * - mb_ord - Returns the Unicode code point of a character
033 * - mb_output_handler - Callback function converts character encoding in output buffer
034 * - mb_scrub - Replaces ill-formed byte sequences with substitute characters
035 * - mb_strlen - Get string length
036 * - mb_strpos - Find position of first occurrence of string in a string
037 * - mb_strrpos - Find position of last occurrence of a string in a string
038 * - mb_str_split - Convert a string to an array
039 * - mb_strtolower - Make a string lowercase
040 * - mb_strtoupper - Make a string uppercase
041 * - mb_substitute_character - Set/Get substitution character
042 * - mb_substr - Get part of string
043 * - mb_stripos - Finds position of first occurrence of a string within another, case insensitive
044 * - mb_stristr - Finds first occurrence of a string within another, case insensitive
045 * - mb_strrchr - Finds the last occurrence of a character in a string within another
046 * - mb_strrichr - Finds the last occurrence of a character in a string within another, case insensitive
047 * - mb_strripos - Finds position of last occurrence of a string within another, case insensitive
048 * - mb_strstr - Finds first occurrence of a string within another
049 * - mb_strwidth - Return width of string
050 * - mb_substr_count - Count the number of substring occurrences
051 *
052 * Not implemented:
053 * - mb_convert_kana - Convert "kana" one from another ("zen-kaku", "han-kaku" and more)
054 * - mb_ereg_* - Regular expression with multibyte support
055 * - mb_parse_str - Parse GET/POST/COOKIE data and set global variable
056 * - mb_preferred_mime_name - Get MIME charset string
057 * - mb_regex_encoding - Returns current encoding for multibyte regex as string
058 * - mb_regex_set_options - Set/Get the default options for mbregex functions
059 * - mb_send_mail - Send encoded mail
060 * - mb_split - Split multibyte string using regular expression
061 * - mb_strcut - Get part of string
062 * - mb_strimwidth - Get truncated string with specified width
063 *
064 * @author Nicolas Grekas <p@tchwork.com>
065 *
066 * @internal
067 */
068 final class Mbstring
069 {
070 public const MB_CASE_FOLD = \PHP_INT_MAX;
071
072 private const SIMPLE_CASE_FOLD = [
073 ['µ', 'ſ', "\xCD\x85", 'ς', "\xCF\x90", "\xCF\x91", "\xCF\x95", "\xCF\x96", "\xCF\xB0", "\xCF\xB1", "\xCF\xB5", "\xE1\xBA\x9B", "\xE1\xBE\xBE"],
074 ['μ', 's', 'ι', 'σ', 'β', 'θ', 'φ', 'π', 'κ', 'ρ', 'ε', "\xE1\xB9\xA1", 'ι'],
075 ];
076
077 private static $encodingList = ['ASCII', 'UTF-8'];
078 private static $language = 'neutral';
079 private static $internalEncoding = 'UTF-8';
080
081 public static function mb_convert_encoding($s, $toEncoding, $fromEncoding = null)
082 {
083 if (\is_array($fromEncoding) || (null !== $fromEncoding && false !== strpos($fromEncoding, ','))) {
084 $fromEncoding = self::mb_detect_encoding($s, $fromEncoding);
085 } else {
086 $fromEncoding = self::getEncoding($fromEncoding);
087 }
088
089 $toEncoding = self::getEncoding($toEncoding);
090
091 if ('BASE64' === $fromEncoding) {
092 $s = base64_decode($s);
093 $fromEncoding = $toEncoding;
094 }
095
096 if ('BASE64' === $toEncoding) {
097 return base64_encode($s);
098 }
099
100 if ('HTML-ENTITIES' === $toEncoding || 'HTML' === $toEncoding) {
101 if ('HTML-ENTITIES' === $fromEncoding || 'HTML' === $fromEncoding) {
102 $fromEncoding = 'Windows-1252';
103 }
104 if ('UTF-8' !== $fromEncoding) {
105 $s = iconv($fromEncoding, 'UTF-8//IGNORE', $s);
106 }
107
108 return preg_replace_callback('/[\x80-\xFF]+/', [__CLASS__, 'html_encoding_callback'], $s);
109 }
110
111 if ('HTML-ENTITIES' === $fromEncoding) {
112 $s = html_entity_decode($s, \ENT_COMPAT, 'UTF-8');
113 $fromEncoding = 'UTF-8';
114 }
115
116 return iconv($fromEncoding, $toEncoding.'//IGNORE', $s);
117 }
118
119 public static function mb_convert_variables($toEncoding, $fromEncoding, &...$vars)
120 {
121 $ok = true;
122 array_walk_recursive($vars, function (&$v) use (&$ok, $toEncoding, $fromEncoding) {
123 if (false === $v = self::mb_convert_encoding($v, $toEncoding, $fromEncoding)) {
124 $ok = false;
125 }
126 });
127
128 return $ok ? $fromEncoding : false;
129 }
130
131 public static function mb_decode_mimeheader($s)
132 {
133 return iconv_mime_decode($s, 2, self::$internalEncoding);
134 }
135
136 public static function mb_encode_mimeheader($s, $charset = null, $transferEncoding = null, $linefeed = null, $indent = null)
137 {
138 trigger_error('mb_encode_mimeheader() is bugged. Please use iconv_mime_encode() instead', \E_USER_WARNING);
139 }
140
141 public static function mb_decode_numericentity($s, $convmap, $encoding = null)
142 {
143 if (null !== $s && !\is_scalar($s) && !(\is_object($s) && method_exists($s, '__toString'))) {
144 trigger_error('mb_decode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', \E_USER_WARNING);
145
146 return null;
147 }
148
149 if (!\is_array($convmap) || (80000 > \PHP_VERSION_ID && !$convmap)) {
150 return false;
151 }
152
153 if (null !== $encoding && !\is_scalar($encoding)) {
154 trigger_error('mb_decode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', \E_USER_WARNING);
155
156 return ''; // Instead of null (cf. mb_encode_numericentity).
157 }
158
159 $s = (string) $s;
160 if ('' === $s) {
161 return '';
162 }
163
164 $encoding = self::getEncoding($encoding);
165
166 if ('UTF-8' === $encoding) {
167 $encoding = null;
168 if (!preg_match('//u', $s)) {
169 $s = @iconv('UTF-8', 'UTF-8//IGNORE', $s);
170 }
171 } else {
172 $s = iconv($encoding, 'UTF-8//IGNORE', $s);
173 }
174
175 $cnt = floor(\count($convmap) / 4) * 4;
176
177 for ($i = 0; $i < $cnt; $i += 4) {
178 // collector_decode_htmlnumericentity ignores $convmap[$i + 3]
179 $convmap[$i] += $convmap[$i + 2];
180 $convmap[$i + 1] += $convmap[$i + 2];
181 }
182
183 $s = preg_replace_callback('/&#(?:0*([0-9]+)|x0*([0-9a-fA-F]+))(?!&);?/', function (array $m) use ($cnt, $convmap) {
184 $c = isset($m[2]) ? (int) hexdec($m[2]) : $m[1];
185 for ($i = 0; $i < $cnt; $i += 4) {
186 if ($c >= $convmap[$i] && $c <= $convmap[$i + 1]) {
187 return self::mb_chr($c - $convmap[$i + 2]);
188 }
189 }
190
191 return $m[0];
192 }, $s);
193
194 if (null === $encoding) {
195 return $s;
196 }
197
198 return iconv('UTF-8', $encoding.'//IGNORE', $s);
199 }
200
201 public static function mb_encode_numericentity($s, $convmap, $encoding = null, $is_hex = false)
202 {
203 if (null !== $s && !\is_scalar($s) && !(\is_object($s) && method_exists($s, '__toString'))) {
204 trigger_error('mb_encode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', \E_USER_WARNING);
205
206 return null;
207 }
208
209 if (!\is_array($convmap) || (80000 > \PHP_VERSION_ID && !$convmap)) {
210 return false;
211 }
212
213 if (null !== $encoding && !\is_scalar($encoding)) {
214 trigger_error('mb_encode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', \E_USER_WARNING);
215
216 return null; // Instead of '' (cf. mb_decode_numericentity).
217 }
218
219 if (null !== $is_hex && !\is_scalar($is_hex)) {
220 trigger_error('mb_encode_numericentity() expects parameter 4 to be boolean, '.\gettype($s).' given', \E_USER_WARNING);
221
222 return null;
223 }
224
225 $s = (string) $s;
226 if ('' === $s) {
227 return '';
228 }
229
230 $encoding = self::getEncoding($encoding);
231
232 if ('UTF-8' === $encoding) {
233 $encoding = null;
234 if (!preg_match('//u', $s)) {
235 $s = @iconv('UTF-8', 'UTF-8//IGNORE', $s);
236 }
237 } else {
238 $s = iconv($encoding, 'UTF-8//IGNORE', $s);
239 }
240
241 static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4];
242
243 $cnt = floor(\count($convmap) / 4) * 4;
244 $i = 0;
245 $len = \strlen($s);
246 $result = '';
247
248 while ($i < $len) {
249 $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
250 $uchr = substr($s, $i, $ulen);
251 $i += $ulen;
252 $c = self::mb_ord($uchr);
253
254 for ($j = 0; $j < $cnt; $j += 4) {
255 if ($c >= $convmap[$j] && $c <= $convmap[$j + 1]) {
256 $cOffset = ($c + $convmap[$j + 2]) & $convmap[$j + 3];
257 $result .= $is_hex ? sprintf('&#x%X;', $cOffset) : '&#'.$cOffset.';';
258 continue 2;
259 }
260 }
261 $result .= $uchr;
262 }
263
264 if (null === $encoding) {
265 return $result;
266 }
267
268 return iconv('UTF-8', $encoding.'//IGNORE', $result);
269 }
270
271 public static function mb_convert_case($s, $mode, $encoding = null)
272 {
273 $s = (string) $s;
274 if ('' === $s) {
275 return '';
276 }
277
278 $encoding = self::getEncoding($encoding);
279
280 if ('UTF-8' === $encoding) {
281 $encoding = null;
282 if (!preg_match('//u', $s)) {
283 $s = @iconv('UTF-8', 'UTF-8//IGNORE', $s);
284 }
285 } else {
286 $s = iconv($encoding, 'UTF-8//IGNORE', $s);
287 }
288
289 if (\MB_CASE_TITLE == $mode) {
290 static $titleRegexp = null;
291 if (null === $titleRegexp) {
292 $titleRegexp = self::getData('titleCaseRegexp');
293 }
294 $s = preg_replace_callback($titleRegexp, [__CLASS__, 'title_case'], $s);
295 } else {
296 if (\MB_CASE_UPPER == $mode) {
297 static $upper = null;
298 if (null === $upper) {
299 $upper = self::getData('upperCase');
300 }
301 $map = $upper;
302 } else {
303 if (self::MB_CASE_FOLD === $mode) {
304 static $caseFolding = null;
305 if (null === $caseFolding) {
306 $caseFolding = self::getData('caseFolding');
307 }
308 $s = strtr($s, $caseFolding);
309 }
310
311 static $lower = null;
312 if (null === $lower) {
313 $lower = self::getData('lowerCase');
314 }
315 $map = $lower;
316 }
317
318 static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4];
319
320 $i = 0;
321 $len = \strlen($s);
322
323 while ($i < $len) {
324 $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
325 $uchr = substr($s, $i, $ulen);
326 $i += $ulen;
327
328 if (isset($map[$uchr])) {
329 $uchr = $map[$uchr];
330 $nlen = \strlen($uchr);
331
332 if ($nlen == $ulen) {
333 $nlen = $i;
334 do {
335 $s[--$nlen] = $uchr[--$ulen];
336 } while ($ulen);
337 } else {
338 $s = substr_replace($s, $uchr, $i - $ulen, $ulen);
339 $len += $nlen - $ulen;
340 $i += $nlen - $ulen;
341 }
342 }
343 }
344 }
345
346 if (null === $encoding) {
347 return $s;
348 }
349
350 return iconv('UTF-8', $encoding.'//IGNORE', $s);
351 }
352
353 public static function mb_internal_encoding($encoding = null)
354 {
355 if (null === $encoding) {
356 return self::$internalEncoding;
357 }
358
359 $normalizedEncoding = self::getEncoding($encoding);
360
361 if ('UTF-8' === $normalizedEncoding || false !== @iconv($normalizedEncoding, $normalizedEncoding, ' ')) {
362 self::$internalEncoding = $normalizedEncoding;
363
364 return true;
365 }
366
367 if (80000 > \PHP_VERSION_ID) {
368 return false;
369 }
370
371 throw new \ValueError(sprintf('Argument #1 ($encoding) must be a valid encoding, "%s" given', $encoding));
372 }
373
374 public static function mb_language($lang = null)
375 {
376 if (null === $lang) {
377 return self::$language;
378 }
379
380 switch ($normalizedLang = strtolower($lang)) {
381 case 'uni':
382 case 'neutral':
383 self::$language = $normalizedLang;
384
385 return true;
386 }
387
388 if (80000 > \PHP_VERSION_ID) {
389 return false;
390 }
391
392 throw new \ValueError(sprintf('Argument #1 ($language) must be a valid language, "%s" given', $lang));
393 }
394
395 public static function mb_list_encodings()
396 {
397 return ['UTF-8'];
398 }
399
400 public static function mb_encoding_aliases($encoding)
401 {
402 switch (strtoupper($encoding)) {
403 case 'UTF8':
404 case 'UTF-8':
405 return ['utf8'];
406 }
407
408 return false;
409 }
410
411 public static function mb_check_encoding($var = null, $encoding = null)
412 {
413 if (PHP_VERSION_ID < 70200 && \is_array($var)) {
414 trigger_error('mb_check_encoding() expects parameter 1 to be string, array given', \E_USER_WARNING);
415
416 return null;
417 }
418
419 if (null === $encoding) {
420 if (null === $var) {
421 return false;
422 }
423 $encoding = self::$internalEncoding;
424 }
425
426 if (!\is_array($var)) {
427 return self::mb_detect_encoding($var, [$encoding]) || false !== @iconv($encoding, $encoding, $var);
428 }
429
430 foreach ($var as $key => $value) {
431 if (!self::mb_check_encoding($key, $encoding)) {
432 return false;
433 }
434 if (!self::mb_check_encoding($value, $encoding)) {
435 return false;
436 }
437 }
438
439 return true;
440
441 }
442
443 public static function mb_detect_encoding($str, $encodingList = null, $strict = false)
444 {
445 if (null === $encodingList) {
446 $encodingList = self::$encodingList;
447 } else {
448 if (!\is_array($encodingList)) {
449 $encodingList = array_map('trim', explode(',', $encodingList));
450 }
451 $encodingList = array_map('strtoupper', $encodingList);
452 }
453
454 foreach ($encodingList as $enc) {
455 switch ($enc) {
456 case 'ASCII':
457 if (!preg_match('/[\x80-\xFF]/', $str)) {
458 return $enc;
459 }
460 break;
461
462 case 'UTF8':
463 case 'UTF-8':
464 if (preg_match('//u', $str)) {
465 return 'UTF-8';
466 }
467 break;
468
469 default:
470 if (0 === strncmp($enc, 'ISO-8859-', 9)) {
471 return $enc;
472 }
473 }
474 }
475
476 return false;
477 }
478
479 public static function mb_detect_order($encodingList = null)
480 {
481 if (null === $encodingList) {
482 return self::$encodingList;
483 }
484
485 if (!\is_array($encodingList)) {
486 $encodingList = array_map('trim', explode(',', $encodingList));
487 }
488 $encodingList = array_map('strtoupper', $encodingList);
489
490 foreach ($encodingList as $enc) {
491 switch ($enc) {
492 default:
493 if (strncmp($enc, 'ISO-8859-', 9)) {
494 return false;
495 }
496 // no break
497 case 'ASCII':
498 case 'UTF8':
499 case 'UTF-8':
500 }
501 }
502
503 self::$encodingList = $encodingList;
504
505 return true;
506 }
507
508 public static function mb_strlen($s, $encoding = null)
509 {
510 $encoding = self::getEncoding($encoding);
511 if ('CP850' === $encoding || 'ASCII' === $encoding) {
512 return \strlen($s);
513 }
514
515 return @iconv_strlen($s, $encoding);
516 }
517
518 public static function mb_strpos($haystack, $needle, $offset = 0, $encoding = null)
519 {
520 $encoding = self::getEncoding($encoding);
521 if ('CP850' === $encoding || 'ASCII' === $encoding) {
522 return strpos($haystack, $needle, $offset);
523 }
524
525 $needle = (string) $needle;
526 if ('' === $needle) {
527 if (80000 > \PHP_VERSION_ID) {
528 trigger_error(__METHOD__.': Empty delimiter', \E_USER_WARNING);
529
530 return false;
531 }
532
533 return 0;
534 }
535
536 return iconv_strpos($haystack, $needle, $offset, $encoding);
537 }
538
539 public static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null)
540 {
541 $encoding = self::getEncoding($encoding);
542 if ('CP850' === $encoding || 'ASCII' === $encoding) {
543 return strrpos($haystack, $needle, $offset);
544 }
545
546 if ($offset != (int) $offset) {
547 $offset = 0;
548 } elseif ($offset = (int) $offset) {
549 if ($offset < 0) {
550 if (0 > $offset += self::mb_strlen($needle)) {
551 $haystack = self::mb_substr($haystack, 0, $offset, $encoding);
552 }
553 $offset = 0;
554 } else {
555 $haystack = self::mb_substr($haystack, $offset, 2147483647, $encoding);
556 }
557 }
558
559 $pos = '' !== $needle || 80000 > \PHP_VERSION_ID
560 ? iconv_strrpos($haystack, $needle, $encoding)
561 : self::mb_strlen($haystack, $encoding);
562
563 return false !== $pos ? $offset + $pos : false;
564 }
565
566 public static function mb_str_split($string, $split_length = 1, $encoding = null)
567 {
568 if (null !== $string && !\is_scalar($string) && !(\is_object($string) && method_exists($string, '__toString'))) {
569 trigger_error('mb_str_split() expects parameter 1 to be string, '.\gettype($string).' given', \E_USER_WARNING);
570
571 return null;
572 }
573
574 if (1 > $split_length = (int) $split_length) {
575 if (80000 > \PHP_VERSION_ID) {
576 trigger_error('The length of each segment must be greater than zero', \E_USER_WARNING);
577
578 return false;
579 }
580
581 throw new \ValueError('Argument #2 ($length) must be greater than 0');
582 }
583
584 if (null === $encoding) {
585 $encoding = mb_internal_encoding();
586 }
587
588 if ('UTF-8' === $encoding = self::getEncoding($encoding)) {
589 $rx = '/(';
590 while (65535 < $split_length) {
591 $rx .= '.{65535}';
592 $split_length -= 65535;
593 }
594 $rx .= '.{'.$split_length.'})/us';
595
596 return preg_split($rx, $string, -1, \PREG_SPLIT_DELIM_CAPTURE | \PREG_SPLIT_NO_EMPTY);
597 }
598
599 $result = [];
600 $length = mb_strlen($string, $encoding);
601
602 for ($i = 0; $i < $length; $i += $split_length) {
603 $result[] = mb_substr($string, $i, $split_length, $encoding);
604 }
605
606 return $result;
607 }
608
609 public static function mb_strtolower($s, $encoding = null)
610 {
611 return self::mb_convert_case($s, \MB_CASE_LOWER, $encoding);
612 }
613
614 public static function mb_strtoupper($s, $encoding = null)
615 {
616 return self::mb_convert_case($s, \MB_CASE_UPPER, $encoding);
617 }
618
619 public static function mb_substitute_character($c = null)
620 {
621 if (null === $c) {
622 return 'none';
623 }
624 if (0 === strcasecmp($c, 'none')) {
625 return true;
626 }
627 if (80000 > \PHP_VERSION_ID) {
628 return false;
629 }
630 if (\is_int($c) || 'long' === $c || 'entity' === $c) {
631 return false;
632 }
633
634 throw new \ValueError('Argument #1 ($substitute_character) must be "none", "long", "entity" or a valid codepoint');
635 }
636
637 public static function mb_substr($s, $start, $length = null, $encoding = null)
638 {
639 $encoding = self::getEncoding($encoding);
640 if ('CP850' === $encoding || 'ASCII' === $encoding) {
641 return (string) substr($s, $start, null === $length ? 2147483647 : $length);
642 }
643
644 if ($start < 0) {
645 $start = iconv_strlen($s, $encoding) + $start;
646 if ($start < 0) {
647 $start = 0;
648 }
649 }
650
651 if (null === $length) {
652 $length = 2147483647;
653 } elseif ($length < 0) {
654 $length = iconv_strlen($s, $encoding) + $length - $start;
655 if ($length < 0) {
656 return '';
657 }
658 }
659
660 return (string) iconv_substr($s, $start, $length, $encoding);
661 }
662
663 public static function mb_stripos($haystack, $needle, $offset = 0, $encoding = null)
664 {
665 [$haystack, $needle] = str_replace(self::SIMPLE_CASE_FOLD[0], self::SIMPLE_CASE_FOLD[1], [
666 self::mb_convert_case($haystack, \MB_CASE_LOWER, $encoding),
667 self::mb_convert_case($needle, \MB_CASE_LOWER, $encoding),
668 ]);
669
670 return self::mb_strpos($haystack, $needle, $offset, $encoding);
671 }
672
673 public static function mb_stristr($haystack, $needle, $part = false, $encoding = null)
674 {
675 $pos = self::mb_stripos($haystack, $needle, 0, $encoding);
676
677 return self::getSubpart($pos, $part, $haystack, $encoding);
678 }
679
680 public static function mb_strrchr($haystack, $needle, $part = false, $encoding = null)
681 {
682 $encoding = self::getEncoding($encoding);
683 if ('CP850' === $encoding || 'ASCII' === $encoding) {
684 $pos = strrpos($haystack, $needle);
685 } else {
686 $needle = self::mb_substr($needle, 0, 1, $encoding);
687 $pos = iconv_strrpos($haystack, $needle, $encoding);
688 }
689
690 return self::getSubpart($pos, $part, $haystack, $encoding);
691 }
692
693 public static function mb_strrichr($haystack, $needle, $part = false, $encoding = null)
694 {
695 $needle = self::mb_substr($needle, 0, 1, $encoding);
696 $pos = self::mb_strripos($haystack, $needle, $encoding);
697
698 return self::getSubpart($pos, $part, $haystack, $encoding);
699 }
700
701 public static function mb_strripos($haystack, $needle, $offset = 0, $encoding = null)
702 {
703 $haystack = self::mb_convert_case($haystack, \MB_CASE_LOWER, $encoding);
704 $needle = self::mb_convert_case($needle, \MB_CASE_LOWER, $encoding);
705
706 $haystack = str_replace(self::SIMPLE_CASE_FOLD[0], self::SIMPLE_CASE_FOLD[1], $haystack);
707 $needle = str_replace(self::SIMPLE_CASE_FOLD[0], self::SIMPLE_CASE_FOLD[1], $needle);
708
709 return self::mb_strrpos($haystack, $needle, $offset, $encoding);
710 }
711
712 public static function mb_strstr($haystack, $needle, $part = false, $encoding = null)
713 {
714 $pos = strpos($haystack, $needle);
715 if (false === $pos) {
716 return false;
717 }
718 if ($part) {
719 return substr($haystack, 0, $pos);
720 }
721
722 return substr($haystack, $pos);
723 }
724
725 public static function mb_get_info($type = 'all')
726 {
727 $info = [
728 'internal_encoding' => self::$internalEncoding,
729 'http_output' => 'pass',
730 'http_output_conv_mimetypes' => '^(text/|application/xhtml\+xml)',
731 'func_overload' => 0,
732 'func_overload_list' => 'no overload',
733 'mail_charset' => 'UTF-8',
734 'mail_header_encoding' => 'BASE64',
735 'mail_body_encoding' => 'BASE64',
736 'illegal_chars' => 0,
737 'encoding_translation' => 'Off',
738 'language' => self::$language,
739 'detect_order' => self::$encodingList,
740 'substitute_character' => 'none',
741 'strict_detection' => 'Off',
742 ];
743
744 if ('all' === $type) {
745 return $info;
746 }
747 if (isset($info[$type])) {
748 return $info[$type];
749 }
750
751 return false;
752 }
753
754 public static function mb_http_input($type = '')
755 {
756 return false;
757 }
758
759 public static function mb_http_output($encoding = null)
760 {
761 return null !== $encoding ? 'pass' === $encoding : 'pass';
762 }
763
764 public static function mb_strwidth($s, $encoding = null)
765 {
766 $encoding = self::getEncoding($encoding);
767
768 if ('UTF-8' !== $encoding) {
769 $s = iconv($encoding, 'UTF-8//IGNORE', $s);
770 }
771
772 $s = preg_replace('/[\x{1100}-\x{115F}\x{2329}\x{232A}\x{2E80}-\x{303E}\x{3040}-\x{A4CF}\x{AC00}-\x{D7A3}\x{F900}-\x{FAFF}\x{FE10}-\x{FE19}\x{FE30}-\x{FE6F}\x{FF00}-\x{FF60}\x{FFE0}-\x{FFE6}\x{20000}-\x{2FFFD}\x{30000}-\x{3FFFD}]/u', '', $s, -1, $wide);
773
774 return ($wide << 1) + iconv_strlen($s, 'UTF-8');
775 }
776
777 public static function mb_substr_count($haystack, $needle, $encoding = null)
778 {
779 return substr_count($haystack, $needle);
780 }
781
782 public static function mb_output_handler($contents, $status)
783 {
784 return $contents;
785 }
786
787 public static function mb_chr($code, $encoding = null)
788 {
789 if (0x80 > $code %= 0x200000) {
790 $s = \chr($code);
791 } elseif (0x800 > $code) {
792 $s = \chr(0xC0 | $code >> 6).\chr(0x80 | $code & 0x3F);
793 } elseif (0x10000 > $code) {
794 $s = \chr(0xE0 | $code >> 12).\chr(0x80 | $code >> 6 & 0x3F).\chr(0x80 | $code & 0x3F);
795 } else {
796 $s = \chr(0xF0 | $code >> 18).\chr(0x80 | $code >> 12 & 0x3F).\chr(0x80 | $code >> 6 & 0x3F).\chr(0x80 | $code & 0x3F);
797 }
798
799 if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
800 $s = mb_convert_encoding($s, $encoding, 'UTF-8');
801 }
802
803 return $s;
804 }
805
806 public static function mb_ord($s, $encoding = null)
807 {
808 if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
809 $s = mb_convert_encoding($s, 'UTF-8', $encoding);
810 }
811
812 if (1 === \strlen($s)) {
813 return \ord($s);
814 }
815
816 $code = ($s = unpack('C*', substr($s, 0, 4))) ? $s[1] : 0;
817 if (0xF0 <= $code) {
818 return (($code - 0xF0) << 18) + (($s[2] - 0x80) << 12) + (($s[3] - 0x80) << 6) + $s[4] - 0x80;
819 }
820 if (0xE0 <= $code) {
821 return (($code - 0xE0) << 12) + (($s[2] - 0x80) << 6) + $s[3] - 0x80;
822 }
823 if (0xC0 <= $code) {
824 return (($code - 0xC0) << 6) + $s[2] - 0x80;
825 }
826
827 return $code;
828 }
829
830 public static function mb_str_pad(string $string, int $length, string $pad_string = ' ', int $pad_type = \STR_PAD_RIGHT, string $encoding = null): string
831 {
832 if (!\in_array($pad_type, [\STR_PAD_RIGHT, \STR_PAD_LEFT, \STR_PAD_BOTH], true)) {
833 throw new \ValueError('mb_str_pad(): Argument #4 ($pad_type) must be STR_PAD_LEFT, STR_PAD_RIGHT, or STR_PAD_BOTH');
834 }
835
836 if (null === $encoding) {
837 $encoding = self::mb_internal_encoding();
838 }
839
840 try {
841 $validEncoding = @self::mb_check_encoding('', $encoding);
842 } catch (\ValueError $e) {
843 throw new \ValueError(sprintf('mb_str_pad(): Argument #5 ($encoding) must be a valid encoding, "%s" given', $encoding));
844 }
845
846 // BC for PHP 7.3 and lower
847 if (!$validEncoding) {
848 throw new \ValueError(sprintf('mb_str_pad(): Argument #5 ($encoding) must be a valid encoding, "%s" given', $encoding));
849 }
850
851 if (self::mb_strlen($pad_string, $encoding) <= 0) {
852 throw new \ValueError('mb_str_pad(): Argument #3 ($pad_string) must be a non-empty string');
853 }
854
855 $paddingRequired = $length - self::mb_strlen($string, $encoding);
856
857 if ($paddingRequired < 1) {
858 return $string;
859 }
860
861 switch ($pad_type) {
862 case \STR_PAD_LEFT:
863 return self::mb_substr(str_repeat($pad_string, $paddingRequired), 0, $paddingRequired, $encoding).$string;
864 case \STR_PAD_RIGHT:
865 return $string.self::mb_substr(str_repeat($pad_string, $paddingRequired), 0, $paddingRequired, $encoding);
866 default:
867 $leftPaddingLength = floor($paddingRequired / 2);
868 $rightPaddingLength = $paddingRequired - $leftPaddingLength;
869
870 return self::mb_substr(str_repeat($pad_string, $leftPaddingLength), 0, $leftPaddingLength, $encoding).$string.self::mb_substr(str_repeat($pad_string, $rightPaddingLength), 0, $rightPaddingLength, $encoding);
871 }
872 }
873
874 private static function getSubpart($pos, $part, $haystack, $encoding)
875 {
876 if (false === $pos) {
877 return false;
878 }
879 if ($part) {
880 return self::mb_substr($haystack, 0, $pos, $encoding);
881 }
882
883 return self::mb_substr($haystack, $pos, null, $encoding);
884 }
885
886 private static function html_encoding_callback(array $m)
887 {
888 $i = 1;
889 $entities = '';
890 $m = unpack('C*', htmlentities($m[0], \ENT_COMPAT, 'UTF-8'));
891
892 while (isset($m[$i])) {
893 if (0x80 > $m[$i]) {
894 $entities .= \chr($m[$i++]);
895 continue;
896 }
897 if (0xF0 <= $m[$i]) {
898 $c = (($m[$i++] - 0xF0) << 18) + (($m[$i++] - 0x80) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
899 } elseif (0xE0 <= $m[$i]) {
900 $c = (($m[$i++] - 0xE0) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
901 } else {
902 $c = (($m[$i++] - 0xC0) << 6) + $m[$i++] - 0x80;
903 }
904
905 $entities .= '&#'.$c.';';
906 }
907
908 return $entities;
909 }
910
911 private static function title_case(array $s)
912 {
913 return self::mb_convert_case($s[1], \MB_CASE_UPPER, 'UTF-8').self::mb_convert_case($s[2], \MB_CASE_LOWER, 'UTF-8');
914 }
915
916 private static function getData($file)
917 {
918 if (file_exists($file = __DIR__.'/Resources/unidata/'.$file.'.php')) {
919 return require $file;
920 }
921
922 return false;
923 }
924
925 private static function getEncoding($encoding)
926 {
927 if (null === $encoding) {
928 return self::$internalEncoding;
929 }
930
931 if ('UTF-8' === $encoding) {
932 return 'UTF-8';
933 }
934
935 $encoding = strtoupper($encoding);
936
937 if ('8BIT' === $encoding || 'BINARY' === $encoding) {
938 return 'CP850';
939 }
940
941 if ('UTF8' === $encoding) {
942 return 'UTF-8';
943 }
944
945 return $encoding;
946 }
947 }
948