Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\CssSelector\Parser\Tokenizer;
Chris@0: 
Chris@0: /**
Chris@0:  * CSS selector tokenizer patterns builder.
Chris@0:  *
Chris@0:  * This component is a port of the Python cssselect library,
Chris@0:  * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
Chris@0:  *
Chris@0:  * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
Chris@0:  *
Chris@0:  * @internal
Chris@0:  */
Chris@0: class TokenizerPatterns
Chris@0: {
Chris@0:     private $unicodeEscapePattern;
Chris@0:     private $simpleEscapePattern;
Chris@0:     private $newLineEscapePattern;
Chris@0:     private $escapePattern;
Chris@0:     private $stringEscapePattern;
Chris@0:     private $nonAsciiPattern;
Chris@0:     private $nmCharPattern;
Chris@0:     private $nmStartPattern;
Chris@0:     private $identifierPattern;
Chris@0:     private $hashPattern;
Chris@0:     private $numberPattern;
Chris@0:     private $quotedStringPattern;
Chris@0: 
Chris@0:     public function __construct()
Chris@0:     {
Chris@0:         $this->unicodeEscapePattern = '\\\\([0-9a-f]{1,6})(?:\r\n|[ \n\r\t\f])?';
Chris@0:         $this->simpleEscapePattern = '\\\\(.)';
Chris@0:         $this->newLineEscapePattern = '\\\\(?:\n|\r\n|\r|\f)';
Chris@0:         $this->escapePattern = $this->unicodeEscapePattern.'|\\\\[^\n\r\f0-9a-f]';
Chris@0:         $this->stringEscapePattern = $this->newLineEscapePattern.'|'.$this->escapePattern;
Chris@0:         $this->nonAsciiPattern = '[^\x00-\x7F]';
Chris@0:         $this->nmCharPattern = '[_a-z0-9-]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
Chris@0:         $this->nmStartPattern = '[_a-z]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
Chris@14:         $this->identifierPattern = '-?(?:'.$this->nmStartPattern.')(?:'.$this->nmCharPattern.')*';
Chris@0:         $this->hashPattern = '#((?:'.$this->nmCharPattern.')+)';
Chris@0:         $this->numberPattern = '[+-]?(?:[0-9]*\.[0-9]+|[0-9]+)';
Chris@0:         $this->quotedStringPattern = '([^\n\r\f%s]|'.$this->stringEscapePattern.')*';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getNewLineEscapePattern()
Chris@0:     {
Chris@0:         return '~^'.$this->newLineEscapePattern.'~';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getSimpleEscapePattern()
Chris@0:     {
Chris@0:         return '~^'.$this->simpleEscapePattern.'~';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getUnicodeEscapePattern()
Chris@0:     {
Chris@0:         return '~^'.$this->unicodeEscapePattern.'~i';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getIdentifierPattern()
Chris@0:     {
Chris@0:         return '~^'.$this->identifierPattern.'~i';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getHashPattern()
Chris@0:     {
Chris@0:         return '~^'.$this->hashPattern.'~i';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getNumberPattern()
Chris@0:     {
Chris@0:         return '~^'.$this->numberPattern.'~';
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $quote
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getQuotedStringPattern($quote)
Chris@0:     {
Chris@0:         return '~^'.sprintf($this->quotedStringPattern, $quote).'~i';
Chris@0:     }
Chris@0: }