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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';
}
}