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<?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\Component\CssSelector\Parser\Tokenizer; /** * CSS selector tokenizer patterns builder. * * This component is a port of the Python cssselector library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> */ class TokenizerPatterns { /** * @var string */ private $unicodeEscapePattern; /** * @var string */ private $simpleEscapePattern; /** * @var string */ private $newLineEscapePattern; /** * @var string */ private $escapePattern; /** * @var string */ private $stringEscapePattern; /** * @var string */ private $nonAsciiPattern; /** * @var string */ private $nmCharPattern; /** * @var string */ private $nmStartPattern; /** * @var string */ private $identifierPattern; /** * @var string */ private $hashPattern; /** * @var string */ private $numberPattern; /** * @var string */ private $quotedStringPattern; /** * Constructor. */ public function __construct() { $this->unicodeEscapePattern = '\\\\([0-9a-f]{1,6})(?:\r\n|[ \n\r\t\f])?'; $this->simpleEscapePattern = '\\\\(.)'; $this->newLineEscapePattern = '\\\\(?:\n|\r\n|\r|\f)'; $this->escapePattern = $this->unicodeEscapePattern.'|\\\\[^\n\r\f0-9a-f]'; $this->stringEscapePattern = $this->newLineEscapePattern.'|'.$this->escapePattern; $this->nonAsciiPattern = '[^\x00-\x7F]'; $this->nmCharPattern = '[_a-z0-9-]|'.$this->escapePattern.'|'.$this->nonAsciiPattern; $this->nmStartPattern = '[_a-z]|'.$this->escapePattern.'|'.$this->nonAsciiPattern; $this->identifierPattern = '(?:'.$this->nmStartPattern.')(?:'.$this->nmCharPattern.')*'; $this->hashPattern = '#((?:'.$this->nmCharPattern.')+)'; $this->numberPattern = '[+-]?(?:[0-9]*\.[0-9]+|[0-9]+)'; $this->quotedStringPattern = '([^\n\r\f%s]|'.$this->stringEscapePattern.')*'; } /** * @return string */ public function getNewLineEscapePattern() { return '~^'.$this->newLineEscapePattern.'~'; } /** * @return string */ public function getSimpleEscapePattern() { return '~^'.$this->simpleEscapePattern.'~'; } /** * @return string */ public function getUnicodeEscapePattern() { return '~^'.$this->unicodeEscapePattern.'~i'; } /** * @return string */ public function getIdentifierPattern() { return '~^'.$this->identifierPattern.'~i'; } /** * @return string */ public function getHashPattern() { return '~^'.$this->hashPattern.'~i'; } /** * @return string */ public function getNumberPattern() { return '~^'.$this->numberPattern.'~'; } /** * @param string $quote * * @return string */ public function getQuotedStringPattern($quote) { return '~^'.sprintf($this->quotedStringPattern, $quote).'~i'; } }