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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Google\Site_Kit_Dependencies\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 <[email protected]>
*
* @internal
*/
class Normalizer
{
const FORM_D = \Normalizer::FORM_D;
const FORM_KD = \Normalizer::FORM_KD;
const FORM_C = \Normalizer::FORM_C;
const FORM_KC = \Normalizer::FORM_KC;
const NFD = \Normalizer::NFD;
const NFKD = \Normalizer::NFKD;
const NFC = \Normalizer::NFC;
const NFKC = \Normalizer::NFKC;
private static $C;
private static $D;
private static $KD;
private static $cC;
private static $ulenMask = array("" => 2, "" => 2, "" => 3, "" => 4);
private static $ASCII = " eiasntrolud][cmp'\ng|hv.fb,:=-q10C2*yx)(L9AS/P\"EjMIk3>5T<D4}B{8FwR67UGN;JzV#HOW_&!K?XQ%Y\\\tZ+~^\$@`\0\1\2\3\4\5\6\7\10\v\f\r\16\17\20\21\22\23\24\25\26\27\30\31\32\33\34\35\36\37";
public static function isNormalized($s, $form = self::NFC)
{
if (!\in_array($form, array(self::NFD, self::NFKD, self::NFC, self::NFKC))) {
return \false;
}
$s = (string) $s;
if (!isset($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) === $s;
}
public static function normalize($s, $form = self::NFC)
{
$s = (string) $s;
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;
}
return \false;
}
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 & (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] < "" ? 1 : $ulenMask[$s[0] & ""];
$len = \strlen($s);
$lastUchr = \substr($s, 0, $i);
$lastUcls = isset($combClass[$lastUchr]) ? 256 : 0;
while ($i < $len) {
if ($s[$i] < "") {
// ASCII chars
if ($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] & ""];
$uchr = \substr($s, $i, $ulen);
if ($lastUchr < "ᄀ" || "ᄒ" < $lastUchr || $uchr < "ᅡ" || "ᅵ" < $uchr || $lastUcls) {
// Table lookup and combining chars composition
$ucls = isset($combClass[$uchr]) ? $combClass[$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 ("ᆧ" <= $uchr && $uchr <= "ᇂ") {
$T = \ord($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 = array();
$i = 0;
$len = \strlen($s);
while ($i < $len) {
if ($s[$i] < "") {
// ASCII chars
if ($c) {
\ksort($c);
$result .= \implode('', $c);
$c = array();
}
$j = 1 + \strspn($s, $ASCII, $i + 1);
$result .= \substr($s, $i, $j);
$i += $j;
continue;
}
$ulen = $ulenMask[$s[$i] & ""];
$uchr = \substr($s, $i, $ulen);
$i += $ulen;
if ($uchr < "가" || "힣" < $uchr) {
// Table lookup
if ($uchr !== ($j = isset($compatMap[$uchr]) ? $compatMap[$uchr] : (isset($decompMap[$uchr]) ? $decompMap[$uchr] : $uchr))) {
$uchr = $j;
$j = \strlen($uchr);
$ulen = $uchr[0] < "" ? 1 : $ulenMask[$uchr[0] & ""];
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;
$uchr = "" . \chr(0x80 + (int) ($j / 588)) . "" . \chr(0xa1 + (int) ($j % 588 / 28));
if ($j %= 28) {
$uchr .= $j < 25 ? "" . \chr(0xa7 + $j) : "" . \chr(0x67 + $j);
}
}
if ($c) {
\ksort($c);
$result .= \implode('', $c);
$c = array();
}
$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;
}
}