258 lines
9.1 KiB
PHP
258 lines
9.1 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Google\Site_Kit_Dependencies\Symfony\Polyfill\Intl\Normalizer;
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/**
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* Normalizer is a PHP fallback implementation of the Normalizer class provided by the intl extension.
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*
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* It has been validated with Unicode 6.3 Normalization Conformance Test.
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* See http://www.unicode.org/reports/tr15/ for detailed info about Unicode normalizations.
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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class Normalizer
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{
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public const FORM_D = \Normalizer::FORM_D;
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public const FORM_KD = \Normalizer::FORM_KD;
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public const FORM_C = \Normalizer::FORM_C;
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public const FORM_KC = \Normalizer::FORM_KC;
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public const NFD = \Normalizer::NFD;
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public const NFKD = \Normalizer::NFKD;
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public const NFC = \Normalizer::NFC;
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public const NFKC = \Normalizer::NFKC;
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private static $C;
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private static $D;
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private static $KD;
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private static $cC;
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private static $ulenMask = ["\xc0" => 2, "\xd0" => 2, "\xe0" => 3, "\xf0" => 4];
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private static $ASCII = " eiasntrolud][cmp'\ng|hv.fb,:=-q10C2*yx)(L9AS/P\"EjMIk3>5T<D4}B{8FwR67UGN;JzV#HOW_&!K?XQ%Y\\\tZ+~^\$@`\x00\x01\x02\x03\x04\x05\x06\x07\x08\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f";
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public static function isNormalized(string $s, int $form = self::FORM_C)
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{
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if (!\in_array($form, [self::NFD, self::NFKD, self::NFC, self::NFKC])) {
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return \false;
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}
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if (!isset($s[\strspn($s, self::$ASCII)])) {
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return \true;
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}
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if (self::NFC == $form && \preg_match('//u', $s) && !\preg_match('/[^\\x00-\\x{2FF}]/u', $s)) {
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return \true;
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}
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return self::normalize($s, $form) === $s;
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}
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public static function normalize(string $s, int $form = self::FORM_C)
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{
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if (!\preg_match('//u', $s)) {
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return \false;
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}
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switch ($form) {
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case self::NFC:
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$C = \true;
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$K = \false;
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break;
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case self::NFD:
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$C = \false;
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$K = \false;
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break;
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case self::NFKC:
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$C = \true;
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$K = \true;
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break;
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case self::NFKD:
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$C = \false;
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$K = \true;
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break;
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default:
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if (\defined('Normalizer::NONE') && \Normalizer::NONE == $form) {
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return $s;
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}
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if (80000 > \PHP_VERSION_ID) {
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return \false;
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}
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throw new \ValueError('normalizer_normalize(): Argument #2 ($form) must be a a valid normalization form');
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}
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if ('' === $s) {
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return '';
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}
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if ($K && null === self::$KD) {
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self::$KD = self::getData('compatibilityDecomposition');
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}
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if (null === self::$D) {
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self::$D = self::getData('canonicalDecomposition');
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self::$cC = self::getData('combiningClass');
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}
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if (null !== ($mbEncoding = 2 & (int) \ini_get('mbstring.func_overload') ? \mb_internal_encoding() : null)) {
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\mb_internal_encoding('8bit');
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}
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$r = self::decompose($s, $K);
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if ($C) {
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if (null === self::$C) {
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self::$C = self::getData('canonicalComposition');
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}
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$r = self::recompose($r);
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}
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if (null !== $mbEncoding) {
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\mb_internal_encoding($mbEncoding);
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}
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return $r;
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}
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private static function recompose($s)
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{
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$ASCII = self::$ASCII;
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$compMap = self::$C;
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$combClass = self::$cC;
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$ulenMask = self::$ulenMask;
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$result = $tail = '';
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$i = $s[0] < "\x80" ? 1 : $ulenMask[$s[0] & "\xf0"];
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$len = \strlen($s);
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$lastUchr = \substr($s, 0, $i);
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$lastUcls = isset($combClass[$lastUchr]) ? 256 : 0;
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while ($i < $len) {
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if ($s[$i] < "\x80") {
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// ASCII chars
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if ($tail) {
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$lastUchr .= $tail;
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$tail = '';
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}
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if ($j = \strspn($s, $ASCII, $i + 1)) {
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$lastUchr .= \substr($s, $i, $j);
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$i += $j;
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}
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$result .= $lastUchr;
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$lastUchr = $s[$i];
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$lastUcls = 0;
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++$i;
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continue;
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}
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$ulen = $ulenMask[$s[$i] & "\xf0"];
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$uchr = \substr($s, $i, $ulen);
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if ($lastUchr < "ᄀ" || "ᄒ" < $lastUchr || $uchr < "ᅡ" || "ᅵ" < $uchr || $lastUcls) {
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// Table lookup and combining chars composition
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$ucls = $combClass[$uchr] ?? 0;
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if (isset($compMap[$lastUchr . $uchr]) && (!$lastUcls || $lastUcls < $ucls)) {
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$lastUchr = $compMap[$lastUchr . $uchr];
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} elseif ($lastUcls = $ucls) {
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$tail .= $uchr;
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} else {
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if ($tail) {
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$lastUchr .= $tail;
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$tail = '';
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}
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$result .= $lastUchr;
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$lastUchr = $uchr;
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}
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} else {
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// Hangul chars
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$L = \ord($lastUchr[2]) - 0x80;
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$V = \ord($uchr[2]) - 0xa1;
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$T = 0;
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$uchr = \substr($s, $i + $ulen, 3);
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if ("ᆧ" <= $uchr && $uchr <= "ᇂ") {
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$T = \ord($uchr[2]) - 0xa7;
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0 > $T && ($T += 0x40);
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$ulen += 3;
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}
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$L = 0xac00 + ($L * 21 + $V) * 28 + $T;
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$lastUchr = \chr(0xe0 | $L >> 12) . \chr(0x80 | $L >> 6 & 0x3f) . \chr(0x80 | $L & 0x3f);
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}
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$i += $ulen;
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}
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return $result . $lastUchr . $tail;
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}
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private static function decompose($s, $c)
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{
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$result = '';
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$ASCII = self::$ASCII;
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$decompMap = self::$D;
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$combClass = self::$cC;
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$ulenMask = self::$ulenMask;
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if ($c) {
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$compatMap = self::$KD;
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}
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$c = [];
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$i = 0;
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$len = \strlen($s);
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while ($i < $len) {
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if ($s[$i] < "\x80") {
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// ASCII chars
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if ($c) {
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\ksort($c);
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$result .= \implode('', $c);
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$c = [];
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}
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$j = 1 + \strspn($s, $ASCII, $i + 1);
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$result .= \substr($s, $i, $j);
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$i += $j;
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continue;
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}
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$ulen = $ulenMask[$s[$i] & "\xf0"];
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$uchr = \substr($s, $i, $ulen);
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$i += $ulen;
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if ($uchr < "가" || "힣" < $uchr) {
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// Table lookup
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if ($uchr !== ($j = $compatMap[$uchr] ?? $decompMap[$uchr] ?? $uchr)) {
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$uchr = $j;
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$j = \strlen($uchr);
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$ulen = $uchr[0] < "\x80" ? 1 : $ulenMask[$uchr[0] & "\xf0"];
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if ($ulen != $j) {
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// Put trailing chars in $s
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$j -= $ulen;
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$i -= $j;
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if (0 > $i) {
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$s = \str_repeat(' ', -$i) . $s;
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$len -= $i;
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$i = 0;
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}
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while ($j--) {
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$s[$i + $j] = $uchr[$ulen + $j];
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}
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$uchr = \substr($uchr, 0, $ulen);
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}
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}
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if (isset($combClass[$uchr])) {
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// Combining chars, for sorting
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if (!isset($c[$combClass[$uchr]])) {
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$c[$combClass[$uchr]] = '';
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}
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$c[$combClass[$uchr]] .= $uchr;
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continue;
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}
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} else {
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// Hangul chars
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$uchr = \unpack('C*', $uchr);
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$j = ($uchr[1] - 224 << 12) + ($uchr[2] - 128 << 6) + $uchr[3] - 0xac80;
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$uchr = "\xe1\x84" . \chr(0x80 + (int) ($j / 588)) . "\xe1\x85" . \chr(0xa1 + (int) ($j % 588 / 28));
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if ($j %= 28) {
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$uchr .= $j < 25 ? "\xe1\x86" . \chr(0xa7 + $j) : "\xe1\x87" . \chr(0x67 + $j);
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}
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}
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if ($c) {
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\ksort($c);
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$result .= \implode('', $c);
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$c = [];
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}
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$result .= $uchr;
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}
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if ($c) {
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\ksort($c);
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$result .= \implode('', $c);
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}
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return $result;
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}
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private static function getData($file)
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{
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if (\file_exists($file = __DIR__ . '/Resources/unidata/' . $file . '.php')) {
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return require $file;
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}
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return \false;
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}
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}
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