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/vendor/patchwork/utf8/src/Patchwork/ -> Utf8.php (source)

   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('€','‚','ƒ','„','…','†','‡','ˆ','‰','Š','‹','Œ','Ž','‘','’','“','”','•','–','—','˜','™','š','›','œ','ž','Ÿ');
  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  }


Generated: Tue Apr 7 19:42:26 2020 Cross-referenced by PHPXref 0.7.1