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Edit File: Normalizer.php
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Polyfill\Intl\Normalizer; /** * Normalizer is a PHP fallback implementation of the Normalizer class provided by the intl extension. * * It has been validated with Unicode 6.3 Normalization Conformance Test. * See http://www.unicode.org/reports/tr15/ for detailed info about Unicode normalizations. * * @author Nicolas Grekas <p@tchwork.com> * * @internal */ class Normalizer { public const FORM_D = \Normalizer::FORM_D; public const FORM_KD = \Normalizer::FORM_KD; public const FORM_C = \Normalizer::FORM_C; public const FORM_KC = \Normalizer::FORM_KC; public const NFD = \Normalizer::NFD; public const NFKD = \Normalizer::NFKD; public const NFC = \Normalizer::NFC; public const NFKC = \Normalizer::NFKC; private static $C; private static $D; private static $KD; private static $cC; private static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4]; private static $ASCII = "\x20\x65\x69\x61\x73\x6E\x74\x72\x6F\x6C\x75\x64\x5D\x5B\x63\x6D\x70\x27\x0A\x67\x7C\x68\x76\x2E\x66\x62\x2C\x3A\x3D\x2D\x71\x31\x30\x43\x32\x2A\x79\x78\x29\x28\x4C\x39\x41\x53\x2F\x50\x22\x45\x6A\x4D\x49\x6B\x33\x3E\x35\x54\x3C\x44\x34\x7D\x42\x7B\x38\x46\x77\x52\x36\x37\x55\x47\x4E\x3B\x4A\x7A\x56\x23\x48\x4F\x57\x5F\x26\x21\x4B\x3F\x58\x51\x25\x59\x5C\x09\x5A\x2B\x7E\x5E\x24\x40\x60\x7F\x00\x01\x02\x03\x04\x05\x06\x07\x08\x0B\x0C\x0D\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F"; public static function isNormalized(string $s, int $form = self::FORM_C) { if (!\in_array($form, [self::NFD, self::NFKD, self::NFC, self::NFKC])) { return false; } if (!isset($s[strspn($s, self::$ASCII)])) { return true; } if (self::NFC == $form && preg_match('//u', $s) && !preg_match('/[^\x00-\x{2FF}]/u', $s)) { return true; } return self::normalize($s, $form) === $s; } public static function normalize(string $s, int $form = self::FORM_C) { if (!preg_match('//u', $s)) { return false; } switch ($form) { case self::NFC: $C = true; $K = false; break; case self::NFD: $C = false; $K = false; break; case self::NFKC: $C = true; $K = true; break; case self::NFKD: $C = false; $K = true; break; default: if (\defined('Normalizer::NONE') && \Normalizer::NONE == $form) { return $s; } if (80000 > \PHP_VERSION_ID) { return false; } throw new \ValueError('normalizer_normalize(): Argument #2 ($form) must be a a valid normalization form'); } if ('' === $s) { return ''; } if ($K && null === self::$KD) { self::$KD = self::getData('compatibilityDecomposition'); } if (null === self::$D) { self::$D = self::getData('canonicalDecomposition'); self::$cC = self::getData('combiningClass'); } if (null !== $mbEncoding = (2 /* MB_OVERLOAD_STRING */ & (int) \ini_get('mbstring.func_overload')) ? mb_internal_encoding() : null) { mb_internal_encoding('8bit'); } $r = self::decompose($s, $K); if ($C) { if (null === self::$C) { self::$C = self::getData('canonicalComposition'); } $r = self::recompose($r); } if (null !== $mbEncoding) { mb_internal_encoding($mbEncoding); } return $r; } private static function recompose($s) { $ASCII = self::$ASCII; $compMap = self::$C; $combClass = self::$cC; $ulenMask = self::$ulenMask; $result = $tail = ''; $i = $s[0] < "\x80" ? 1 : $ulenMask[$s[0] & "\xF0"]; $len = \strlen($s); $lastUchr = substr($s, 0, $i); $lastUcls = isset($combClass[$lastUchr]) ? 256 : 0; while ($i < $len) { if ($s[$i] < "\x80") { // ASCII chars if ($tail) { $lastUchr .= $tail; $tail = ''; } if ($j = strspn($s, $ASCII, $i + 1)) { $lastUchr .= substr($s, $i, $j); $i += $j; } $result .= $lastUchr; $lastUchr = $s[$i]; $lastUcls = 0; ++$i; continue; } $ulen = $ulenMask[$s[$i] & "\xF0"]; $uchr = substr($s, $i, $ulen); if ($lastUchr < "\xE1\x84\x80" || "\xE1\x84\x92" < $lastUchr || $uchr < "\xE1\x85\xA1" || "\xE1\x85\xB5" < $uchr || $lastUcls) { // Table lookup and combining chars composition $ucls = $combClass[$uchr] ?? 0; if (isset($compMap[$lastUchr.$uchr]) && (!$lastUcls || $lastUcls < $ucls)) { $lastUchr = $compMap[$lastUchr.$uchr]; } elseif ($lastUcls = $ucls) { $tail .= $uchr; } else { if ($tail) { $lastUchr .= $tail; $tail = ''; } $result .= $lastUchr; $lastUchr = $uchr; } } else { // Hangul chars $L = \ord($lastUchr[2]) - 0x80; $V = \ord($uchr[2]) - 0xA1; $T = 0; $uchr = substr($s, $i + $ulen, 3); if ("\xE1\x86\xA7" <= $uchr && $uchr <= "\xE1\x87\x82") { $T = \ord($uchr[2]) - 0xA7; 0 > $T && $T += 0x40; $ulen += 3; } $L = 0xAC00 + ($L * 21 + $V) * 28 + $T; $lastUchr = \chr(0xE0 | $L >> 12).\chr(0x80 | $L >> 6 & 0x3F).\chr(0x80 | $L & 0x3F); } $i += $ulen; } return $result.$lastUchr.$tail; } private static function decompose($s, $c) { $result = ''; $ASCII = self::$ASCII; $decompMap = self::$D; $combClass = self::$cC; $ulenMask = self::$ulenMask; if ($c) { $compatMap = self::$KD; } $c = []; $i = 0; $len = \strlen($s); while ($i < $len) { if ($s[$i] < "\x80") { // ASCII chars if ($c) { ksort($c); $result .= implode('', $c); $c = []; } $j = 1 + strspn($s, $ASCII, $i + 1); $result .= substr($s, $i, $j); $i += $j; continue; } $ulen = $ulenMask[$s[$i] & "\xF0"]; $uchr = substr($s, $i, $ulen); $i += $ulen; if ($uchr < "\xEA\xB0\x80" || "\xED\x9E\xA3" < $uchr) { // Table lookup if ($uchr !== $j = $compatMap[$uchr] ?? ($decompMap[$uchr] ?? $uchr)) { $uchr = $j; $j = \strlen($uchr); $ulen = $uchr[0] < "\x80" ? 1 : $ulenMask[$uchr[0] & "\xF0"]; if ($ulen != $j) { // Put trailing chars in $s $j -= $ulen; $i -= $j; if (0 > $i) { $s = str_repeat(' ', -$i).$s; $len -= $i; $i = 0; } while ($j--) { $s[$i + $j] = $uchr[$ulen + $j]; } $uchr = substr($uchr, 0, $ulen); } } if (isset($combClass[$uchr])) { // Combining chars, for sorting if (!isset($c[$combClass[$uchr]])) { $c[$combClass[$uchr]] = ''; } $c[$combClass[$uchr]] .= $uchr; continue; } } else { // Hangul chars $uchr = unpack('C*', $uchr); $j = (($uchr[1] - 224) << 12) + (($uchr[2] - 128) << 6) + $uchr[3] - 0xAC80; $uchr = "\xE1\x84".\chr(0x80 + (int) ($j / 588)) ."\xE1\x85".\chr(0xA1 + (int) (($j % 588) / 28)); if ($j %= 28) { $uchr .= $j < 25 ? ("\xE1\x86".\chr(0xA7 + $j)) : ("\xE1\x87".\chr(0x67 + $j)); } } if ($c) { ksort($c); $result .= implode('', $c); $c = []; } $result .= $uchr; } if ($c) { ksort($c); $result .= implode('', $c); } return $result; } private static function getData($file) { if (file_exists($file = __DIR__.'/Resources/unidata/'.$file.'.php')) { return require $file; } return false; } }