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1 <?php 2 3 /* 4 * Copyright (C) 2016 Nicolas Grekas - p@tchwork.com 5 * 6 * This library is free software; you can redistribute it and/or modify it 7 * under the terms of the (at your option): 8 * Apache License v2.0 (http://apache.org/licenses/LICENSE-2.0.txt), or 9 * GNU General Public License v2.0 (http://gnu.org/licenses/gpl-2.0.txt). 10 */ 11 12 namespace Patchwork; 13 14 use Normalizer as n; 15 16 /** 17 * UTF-8 Grapheme Cluster aware string manipulations implementing the quasi complete 18 * set of native PHP string functions that need UTF-8 awareness and more. 19 * Missing are printf-family functions. 20 */ 21 class Utf8 22 { 23 protected static $pathPrefix; 24 protected static $commonCaseFold = array( 25 array('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"), 26 array('μ','s','ι', 'σ','β', 'θ', 'φ', 'π', 'κ', 'ρ', 'ε', "\xE1\xB9\xA1",'ι'), 27 ); 28 protected static $cp1252 = array('','','','',' ','','','','','','','','','','','','','','','','','','','','','',''); 29 protected static $utf8 = array('€','‚','ƒ','„','…','†','‡','ˆ','‰','Š','‹','Œ','Ž','‘','’','“','”','•','–','—','˜','™','š','›','œ','ž','Ÿ'); 30 31 public static function isUtf8($s) 32 { 33 return (bool) preg_match('//u', $s); // Since PHP 5.2.5, this also excludes invalid five and six bytes sequences 34 } 35 36 // Generic UTF-8 to ASCII transliteration 37 38 public static function toAscii($s, $subst_chr = '?') 39 { 40 if (preg_match("/[\x80-\xFF]/", $s)) { 41 static $translitExtra = array(); 42 $translitExtra or $translitExtra = static::getData('translit_extra'); 43 44 $s = n::normalize($s, n::NFKC); 45 46 $glibc = 'glibc' === ICONV_IMPL; 47 48 preg_match_all('/./u', $s, $s); 49 50 foreach ($s[0] as &$c) { 51 if (!isset($c[1])) { 52 continue; 53 } 54 55 if ($glibc) { 56 $t = iconv('UTF-8', 'ASCII//TRANSLIT', $c); 57 } else { 58 $t = iconv('UTF-8', 'ASCII//IGNORE//TRANSLIT', $c); 59 60 if (!isset($t[0])) { 61 $t = '?'; 62 } elseif (isset($t[1])) { 63 $t = ltrim($t, '\'`"^~'); 64 } 65 } 66 67 if ('?' === $t) { 68 if (isset($translitExtra[$c])) { 69 $t = $translitExtra[$c]; 70 } else { 71 $t = n::normalize($c, n::NFD); 72 73 if ($t[0] < "\x80") { 74 $t = $t[0]; 75 } else { 76 $t = $subst_chr; 77 } 78 } 79 } 80 81 $c = $t; 82 } 83 84 $s = implode('', $s[0]); 85 } 86 87 return $s; 88 } 89 90 public static function wrapPath($path = '') 91 { 92 if (null === static::$pathPrefix) { 93 static $hasWfio; 94 isset($hasWfio) or $hasWfio = extension_loaded('wfio'); 95 96 if ($hasWfio) { 97 static::$pathPrefix = 'wfio://'; 98 } elseif ('\\' === DIRECTORY_SEPARATOR && class_exists('COM', false)) { 99 static::$pathPrefix = 'utf8'.mt_rand(); 100 stream_wrapper_register(static::$pathPrefix, 'Patchwork\Utf8\WindowsStreamWrapper'); 101 static::$pathPrefix .= '://'; 102 } else { 103 if ('\\' === DIRECTORY_SEPARATOR) { 104 trigger_error('The `wfio` or `com_dotnet` extension is required to handle UTF-8 filesystem access on Windows'); 105 } 106 static::$pathPrefix = 'file://'; 107 } 108 } 109 110 return static::$pathPrefix.$path; 111 } 112 113 public static function filter($var, $normalization_form = 4 /* n::NFC */, $leading_combining = '◌') 114 { 115 switch (gettype($var)) { 116 case 'array': 117 foreach ($var as $k => $v) { 118 $var[$k] = static::filter($v, $normalization_form, $leading_combining); 119 } 120 break; 121 122 case 'object': 123 foreach ($var as $k => $v) { 124 $var->$k = static::filter($v, $normalization_form, $leading_combining); 125 } 126 break; 127 128 case 'string': 129 if (false !== strpos($var, "\r")) { 130 // Workaround https://bugs.php.net/65732 131 $var = str_replace("\r\n", "\n", $var); 132 $var = strtr($var, "\r", "\n"); 133 } 134 135 if (preg_match('/[\x80-\xFF]/', $var)) { 136 if (n::isNormalized($var, $normalization_form)) { 137 $n = '-'; 138 } else { 139 $n = n::normalize($var, $normalization_form); 140 if (isset($n[0])) { 141 $var = $n; 142 } else { 143 $var = static::utf8_encode($var); 144 } 145 } 146 147 if ($var[0] >= "\x80" && isset($n[0], $leading_combining[0]) && preg_match('/^\p{Mn}/u', $var)) { 148 // Prevent leading combining chars 149 // for NFC-safe concatenations. 150 $var = $leading_combining.$var; 151 } 152 } 153 break; 154 } 155 156 return $var; 157 } 158 159 // Unicode transformation for caseless matching 160 // see http://unicode.org/reports/tr21/tr21-5.html 161 162 public static function strtocasefold($s, $full = true) 163 { 164 $s = str_replace(self::$commonCaseFold[0], self::$commonCaseFold[1], $s); 165 166 if ($full) { 167 static $fullCaseFold = false; 168 $fullCaseFold or $fullCaseFold = static::getData('caseFolding_full'); 169 170 $s = str_replace($fullCaseFold[0], $fullCaseFold[1], $s); 171 } 172 173 return static::strtolower($s); 174 } 175 176 // Generic case sensitive collation support for self::strnatcmp() 177 178 public static function strtonatfold($s) 179 { 180 $s = n::normalize($s, n::NFD); 181 182 return preg_replace('/\p{Mn}+/u', '', $s); 183 } 184 185 // PHP string functions that need UTF-8 awareness 186 187 public static function filter_input($type, $var, $filter = FILTER_DEFAULT, $option = null) 188 { 189 if (4 > func_num_args()) { 190 $var = filter_input($type, $var, $filter); 191 } else { 192 $var = filter_input($type, $var, $filter, $option); 193 } 194 195 return static::filter($var); 196 } 197 198 public static function filter_input_array($type, $def = null, $add_empty = true) 199 { 200 if (2 > func_num_args()) { 201 $a = filter_input_array($type); 202 } else { 203 $a = filter_input_array($type, $def, $add_empty); 204 } 205 206 return static::filter($a); 207 } 208 209 public static function json_decode($json, $assoc = false, $depth = 512, $options = 0) 210 { 211 if (PHP_VERSION_ID < 50400) { 212 $json = json_decode($json, $assoc, $depth); 213 } else { 214 $json = json_decode($json, $assoc, $depth, $options); 215 } 216 217 return static::filter($json); 218 } 219 220 public static function substr($s, $start, $len = 2147483647) 221 { 222 static $bug62759; 223 isset($bug62759) or $bug62759 = extension_loaded('intl') && 'à' === @grapheme_substr('éà', 1, -2); 224 225 if ($bug62759) { 226 return PHP\Shim\Intl::grapheme_substr_workaround62759($s, $start, $len); 227 } else { 228 return grapheme_substr($s, $start, $len); 229 } 230 } 231 232 public static function strlen($s) 233 { 234 return grapheme_strlen($s); 235 } 236 public static function strpos($s, $needle, $offset = 0) 237 { 238 // ignore invalid negative offset to keep compatility 239 // with php < 5.5.35, < 5.6.21, < 7.0.6 240 return grapheme_strpos($s, $needle, $offset > 0 ? $offset : 0); 241 } 242 public static function strrpos($s, $needle, $offset = 0) 243 { 244 return grapheme_strrpos($s, $needle, $offset); 245 } 246 247 public static function stripos($s, $needle, $offset = 0) 248 { 249 if (50418 > PHP_VERSION_ID || 50500 == PHP_VERSION_ID) { 250 // Don't use grapheme_stripos because of https://bugs.php.net/61860 251 if (!preg_match('//u', $s .= '')) { 252 return false; 253 } 254 if ($offset < 0) { 255 $offset = 0; 256 } 257 if (!$needle = mb_stripos($s, $needle .= '', $offset, 'UTF-8')) { 258 return $needle; 259 } 260 261 return grapheme_strlen(iconv_substr($s, 0, $needle, 'UTF-8')); 262 } 263 264 return grapheme_stripos($s, $needle, $offset); 265 } 266 267 public static function strripos($s, $needle, $offset = 0) 268 { 269 if (50418 > PHP_VERSION_ID || 50500 == PHP_VERSION_ID) { 270 // Don't use grapheme_strripos because of https://bugs.php.net/61860 271 if (!preg_match('//u', $s .= '')) { 272 return false; 273 } 274 if ($offset < 0) { 275 $offset = 0; 276 } 277 if (!$needle = mb_strripos($s, $needle .= '', $offset, 'UTF-8')) { 278 return $needle; 279 } 280 281 return grapheme_strlen(iconv_substr($s, 0, $needle, 'UTF-8')); 282 } 283 284 return grapheme_strripos($s, $needle, $offset); 285 } 286 287 public static function stristr($s, $needle, $before_needle = false) 288 { 289 if ('' === $needle .= '') { 290 return false; 291 } 292 293 return mb_stristr($s, $needle, $before_needle, 'UTF-8'); 294 } 295 296 public static function strstr($s, $needle, $before_needle = false) 297 { 298 return grapheme_strstr($s, $needle, $before_needle); 299 } 300 public static function strrchr($s, $needle, $before_needle = false) 301 { 302 return mb_strrchr($s, $needle, $before_needle, 'UTF-8'); 303 } 304 public static function strrichr($s, $needle, $before_needle = false) 305 { 306 return mb_strrichr($s, $needle, $before_needle, 'UTF-8'); 307 } 308 309 public static function strtolower($s) 310 { 311 return mb_strtolower($s, 'UTF-8'); 312 } 313 public static function strtoupper($s) 314 { 315 return mb_strtoupper($s, 'UTF-8'); 316 } 317 318 public static function wordwrap($s, $width = 75, $break = "\n", $cut = false) 319 { 320 if (false === wordwrap('-', $width, $break, $cut)) { 321 return false; 322 } 323 324 is_string($break) or $break = (string) $break; 325 326 $w = ''; 327 $s = explode($break, $s); 328 $iLen = count($s); 329 $chars = array(); 330 331 if (1 === $iLen && '' === $s[0]) { 332 return ''; 333 } 334 335 for ($i = 0; $i < $iLen; ++$i) { 336 if ($i) { 337 $chars[] = $break; 338 $w .= '#'; 339 } 340 341 $c = $s[$i]; 342 unset($s[$i]); 343 344 foreach (self::str_split($c) as $c) { 345 $chars[] = $c; 346 $w .= ' ' === $c ? ' ' : '?'; 347 } 348 } 349 350 $s = ''; 351 $j = 0; 352 $b = $i = -1; 353 $w = wordwrap($w, $width, '#', $cut); 354 355 while (false !== $b = strpos($w, '#', $b + 1)) { 356 for (++$i; $i < $b; ++$i) { 357 $s .= $chars[$j]; 358 unset($chars[$j++]); 359 } 360 361 if ($break === $chars[$j] || ' ' === $chars[$j]) { 362 unset($chars[$j++]); 363 } 364 $s .= $break; 365 } 366 367 return $s.implode('', $chars); 368 } 369 370 public static function chr($c) 371 { 372 if (0x80 > $c %= 0x200000) { 373 return chr($c); 374 } 375 if (0x800 > $c) { 376 return chr(0xC0 | $c >> 6).chr(0x80 | $c & 0x3F); 377 } 378 if (0x10000 > $c) { 379 return chr(0xE0 | $c >> 12).chr(0x80 | $c >> 6 & 0x3F).chr(0x80 | $c & 0x3F); 380 } 381 382 return chr(0xF0 | $c >> 18).chr(0x80 | $c >> 12 & 0x3F).chr(0x80 | $c >> 6 & 0x3F).chr(0x80 | $c & 0x3F); 383 } 384 385 public static function count_chars($s, $mode = 0) 386 { 387 if (1 != $mode) { 388 user_error(__METHOD__.'(): the only allowed $mode is 1', E_USER_WARNING); 389 } 390 $s = self::str_split($s); 391 392 return array_count_values($s); 393 } 394 395 public static function ltrim($s, $charlist = null) 396 { 397 $charlist = null === $charlist ? '\s' : self::rxClass($charlist); 398 399 return preg_replace("/^{$charlist}+/u", '', $s); 400 } 401 402 public static function ord($s) 403 { 404 $a = ($s = unpack('C*', substr($s, 0, 4))) ? $s[1] : 0; 405 if (0xF0 <= $a) { 406 return (($a - 0xF0) << 18) + (($s[2] - 0x80) << 12) + (($s[3] - 0x80) << 6) + $s[4] - 0x80; 407 } 408 if (0xE0 <= $a) { 409 return (($a - 0xE0) << 12) + (($s[2] - 0x80) << 6) + $s[3] - 0x80; 410 } 411 if (0xC0 <= $a) { 412 return (($a - 0xC0) << 6) + $s[2] - 0x80; 413 } 414 415 return $a; 416 } 417 418 public static function rtrim($s, $charlist = null) 419 { 420 $charlist = null === $charlist ? '\s' : self::rxClass($charlist); 421 422 return preg_replace("/{$charlist}+$/u", '', $s); 423 } 424 425 public static function trim($s, $charlist = null) 426 { 427 return self::rtrim(self::ltrim($s, $charlist), $charlist); 428 } 429 430 public static function str_ireplace($search, $replace, $subject, &$count = null) 431 { 432 $search = (array) $search; 433 434 foreach ($search as $i => $s) { 435 if ('' === $s .= '') { 436 $s = '/^(?<=.)$/'; 437 } else { 438 $s = '/'.preg_quote($s, '/').'/ui'; 439 } 440 441 $search[$i] = $s; 442 } 443 444 $subject = preg_replace($search, $replace, $subject, -1, $replace); 445 $count = $replace; 446 447 return $subject; 448 } 449 450 public static function str_pad($s, $len, $pad = ' ', $type = STR_PAD_RIGHT) 451 { 452 $slen = grapheme_strlen($s); 453 if ($len <= $slen) { 454 return $s; 455 } 456 457 $padlen = grapheme_strlen($pad); 458 $freelen = $len - $slen; 459 $len = $freelen % $padlen; 460 461 if (STR_PAD_RIGHT == $type) { 462 return $s.str_repeat($pad, $freelen / $padlen).($len ? grapheme_substr($pad, 0, $len) : ''); 463 } 464 if (STR_PAD_LEFT == $type) { 465 return str_repeat($pad, $freelen / $padlen).($len ? grapheme_substr($pad, 0, $len) : '').$s; 466 } 467 if (STR_PAD_BOTH == $type) { 468 $freelen /= 2; 469 470 $type = ceil($freelen); 471 $len = $type % $padlen; 472 $s .= str_repeat($pad, $type / $padlen).($len ? grapheme_substr($pad, 0, $len) : ''); 473 474 $type = floor($freelen); 475 $len = $type % $padlen; 476 477 return str_repeat($pad, $type / $padlen).($len ? grapheme_substr($pad, 0, $len) : '').$s; 478 } 479 480 user_error(__METHOD__.'(): Padding type has to be STR_PAD_LEFT, STR_PAD_RIGHT, or STR_PAD_BOTH', E_USER_WARNING); 481 } 482 483 public static function str_shuffle($s) 484 { 485 $s = self::str_split($s); 486 shuffle($s); 487 488 return implode('', $s); 489 } 490 491 public static function str_split($s, $len = 1) 492 { 493 if (1 > $len = (int) $len) { 494 $len = func_get_arg(1); 495 496 return str_split($s, $len); 497 } 498 499 static $hasIntl; 500 isset($hasIntl) or $hasIntl = extension_loaded('intl'); 501 502 if ($hasIntl) { 503 $a = array(); 504 $p = 0; 505 $l = strlen($s); 506 507 while ($p < $l) { 508 $a[] = grapheme_extract($s, 1, GRAPHEME_EXTR_COUNT, $p, $p); 509 } 510 } else { 511 preg_match_all('/'.GRAPHEME_CLUSTER_RX.'/u', $s, $a); 512 $a = $a[0]; 513 } 514 515 if (1 == $len) { 516 return $a; 517 } 518 519 $s = array(); 520 $p = -1; 521 522 foreach ($a as $l => $a) { 523 if ($l % $len) { 524 $s[$p] .= $a; 525 } else { 526 $s[++$p] = $a; 527 } 528 } 529 530 return $s; 531 } 532 533 public static function str_word_count($s, $format = 0, $charlist = '') 534 { 535 $charlist = self::rxClass($charlist, '\pL'); 536 $s = preg_split("/({$charlist}+(?:[\p{Pd}’']{$charlist}+)*)/u", $s, -1, PREG_SPLIT_DELIM_CAPTURE); 537 538 $charlist = array(); 539 $len = count($s); 540 541 if (1 == $format) { 542 for ($i = 1; $i < $len; $i += 2) { 543 $charlist[] = $s[$i]; 544 } 545 } elseif (2 == $format) { 546 $offset = grapheme_strlen($s[0]); 547 for ($i = 1; $i < $len; $i += 2) { 548 $charlist[$offset] = $s[$i]; 549 $offset += grapheme_strlen($s[$i]) + grapheme_strlen($s[$i + 1]); 550 } 551 } else { 552 $charlist = ($len - 1) / 2; 553 } 554 555 return $charlist; 556 } 557 558 public static function strcmp($a, $b) 559 { 560 return $a.'' === $b.'' ? 0 : strcmp(n::normalize($a, n::NFD), n::normalize($b, n::NFD)); 561 } 562 public static function strnatcmp($a, $b) 563 { 564 return $a.'' === $b.'' ? 0 : strnatcmp(self::strtonatfold($a), self::strtonatfold($b)); 565 } 566 public static function strcasecmp($a, $b) 567 { 568 return self::strcmp(static::strtocasefold($a), static::strtocasefold($b)); 569 } 570 public static function strnatcasecmp($a, $b) 571 { 572 return self::strnatcmp(static::strtocasefold($a), static::strtocasefold($b)); 573 } 574 public static function strncasecmp($a, $b, $len) 575 { 576 return self::strncmp(static::strtocasefold($a), static::strtocasefold($b), $len); 577 } 578 public static function strncmp($a, $b, $len) 579 { 580 return self::strcmp(self::substr($a, 0, $len), self::substr($b, 0, $len)); 581 } 582 583 public static function strcspn($s, $charlist, $start = 0, $len = 2147483647) 584 { 585 if ('' === $charlist .= '') { 586 return; 587 } 588 if ($start || 2147483647 != $len) { 589 $s = self::substr($s, $start, $len); 590 } 591 592 return preg_match('/^(.*?)'.self::rxClass($charlist).'/us', $s, $len) ? grapheme_strlen($len[1]) : grapheme_strlen($s); 593 } 594 595 public static function strpbrk($s, $charlist) 596 { 597 if (preg_match('/'.self::rxClass($charlist).'/us', $s, $m)) { 598 return substr($s, strpos($s, $m[0])); 599 } else { 600 return false; 601 } 602 } 603 604 public static function strrev($s) 605 { 606 $s = self::str_split($s); 607 608 return implode('', array_reverse($s)); 609 } 610 611 public static function strspn($s, $mask, $start = 0, $len = 2147483647) 612 { 613 if ($start || 2147483647 != $len) { 614 $s = self::substr($s, $start, $len); 615 } 616 617 return preg_match('/^'.self::rxClass($mask).'+/u', $s, $s) ? grapheme_strlen($s[0]) : 0; 618 } 619 620 public static function strtr($s, $from, $to = null) 621 { 622 if (null !== $to) { 623 $from = self::str_split($from); 624 $to = self::str_split($to); 625 626 $a = count($from); 627 $b = count($to); 628 629 if ($a > $b) { 630 $from = array_slice($from, 0, $b); 631 } elseif ($a < $b) { 632 $to = array_slice($to, 0, $a); 633 } 634 635 $from = array_combine($from, $to); 636 } 637 638 return strtr($s, $from); 639 } 640 641 public static function substr_compare($a, $b, $offset, $len = 2147483647, $i = 0) 642 { 643 $a = self::substr($a, $offset, $len); 644 645 return $i ? static::strcasecmp($a, $b) : self::strcmp($a, $b); 646 } 647 648 public static function substr_count($s, $needle, $offset = 0, $len = 2147483647) 649 { 650 return substr_count(self::substr($s, $offset, $len), $needle); 651 } 652 653 public static function substr_replace($s, $replace, $start, $len = 2147483647) 654 { 655 $s = self::str_split($s); 656 $replace = self::str_split($replace); 657 array_splice($s, $start, $len, $replace); 658 659 return implode('', $s); 660 } 661 662 public static function ucfirst($s) 663 { 664 $c = iconv_substr($s, 0, 1, 'UTF-8'); 665 666 return static::ucwords($c).substr($s, strlen($c)); 667 } 668 669 public static function lcfirst($s) 670 { 671 $c = iconv_substr($s, 0, 1, 'UTF-8'); 672 673 return static::strtolower($c).substr($s, strlen($c)); 674 } 675 676 public static function ucwords($s) 677 { 678 return preg_replace_callback( 679 "/\b(.)/u", 680 function ($matches) { 681 return mb_convert_case($matches[1], MB_CASE_TITLE, 'UTF-8'); 682 }, 683 $s 684 ); 685 } 686 687 public static function number_format($number, $decimals = 0, $dec_point = '.', $thousands_sep = ',') 688 { 689 if (PHP_VERSION_ID < 50400) { 690 if (isset($thousands_sep[1]) || isset($dec_point[1])) { 691 return str_replace( 692 array('.', ','), 693 array($dec_point, $thousands_sep), 694 number_format($number, $decimals, '.', ',') 695 ); 696 } 697 } 698 699 return number_format($number, $decimals, $dec_point, $thousands_sep); 700 } 701 702 public static function utf8_encode($s) 703 { 704 $s = utf8_encode($s); 705 if (false === strpos($s, "\xC2")) { 706 return $s; 707 } else { 708 return str_replace(self::$cp1252, self::$utf8, $s); 709 } 710 } 711 712 public static function utf8_decode($s) 713 { 714 $s = str_replace(self::$utf8, self::$cp1252, $s); 715 716 return utf8_decode($s); 717 } 718 719 public static function strwidth($s) 720 { 721 if (false !== strpos($s, "\r")) { 722 $s = str_replace("\r\n", "\n", $s); 723 $s = strtr($s, "\r", "\n"); 724 } 725 $width = 0; 726 727 foreach (explode("\n", $s) as $s) { 728 $s = preg_replace('/\x1B\[[\d;]*m/', '', $s); 729 $c = substr_count($s, "\xAD") - substr_count($s, "\x08"); 730 $s = preg_replace('/[\x00\x05\x07\p{Mn}\p{Me}\p{Cf}\x{1160}-\x{11FF}\x{200B}]+/u', '', $s); 731 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, $wide); 732 733 if ($width < $c = iconv_strlen($s, 'UTF-8') + $wide + $c) { 734 $width = $c; 735 } 736 } 737 738 return $width; 739 } 740 741 protected static function rxClass($s, $class = '') 742 { 743 $class = array($class); 744 745 foreach (self::str_split($s) as $s) { 746 if ('-' === $s) { 747 $class[0] = '-'.$class[0]; 748 } elseif (!isset($s[2])) { 749 $class[0] .= preg_quote($s, '/'); 750 } elseif (1 === iconv_strlen($s, 'UTF-8')) { 751 $class[0] .= $s; 752 } else { 753 $class[] = $s; 754 } 755 } 756 757 $class[0] = '['.$class[0].']'; 758 759 if (1 === count($class)) { 760 return $class[0]; 761 } else { 762 return '(?:'.implode('|', $class).')'; 763 } 764 } 765 766 protected static function getData($file) 767 { 768 $file = __DIR__.'/Utf8/data/'.$file.'.ser'; 769 if (file_exists($file)) { 770 return unserialize(file_get_contents($file)); 771 } else { 772 return false; 773 } 774 } 775 }
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