Automattic\WooCommerce\Vendor\Symfony\Component\CssSelector\Parser\Tokenizer

TokenizerEscaping{} │ WC 1.0

CSS selector tokenizer escaping applier.

This component is a port of the Python cssselect library, which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.

No Hooks.

Usage

$TokenizerEscaping = new TokenizerEscaping();
// use class methods

Methods

1. public __construct(TokenizerPatterns $patterns)
2. public escapeUnicode(string $value)
3. public escapeUnicodeAndNewLine(string $value)
4. private replaceUnicodeSequences(string $value)

TokenizerEscaping{} TokenizerEscaping{} code ^{WC 10.7.0}

class TokenizerEscaping
{
    private $patterns;

    public function __construct(TokenizerPatterns $patterns)
    {
        $this->patterns = $patterns;
    }

    public function escapeUnicode(string $value): string
    {
        $value = $this->replaceUnicodeSequences($value);

        return preg_replace($this->patterns->getSimpleEscapePattern(), '$1', $value);
    }

    public function escapeUnicodeAndNewLine(string $value): string
    {
        $value = preg_replace($this->patterns->getNewLineEscapePattern(), '', $value);

        return $this->escapeUnicode($value);
    }

    private function replaceUnicodeSequences(string $value): string
    {
        return preg_replace_callback($this->patterns->getUnicodeEscapePattern(), function ($match) {
            $c = hexdec($match[1]);

            if (0x80 > $c %= 0x200000) {
                return \chr($c);
            }
            if (0x800 > $c) {
                return \chr(0xC0 | $c >> 6).\chr(0x80 | $c & 0x3F);
            }
            if (0x10000 > $c) {
                return \chr(0xE0 | $c >> 12).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
            }

            return '';
        }, $value);
    }
}