163 lines
3.4 KiB
PHP
163 lines
3.4 KiB
PHP
<?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 cssselect library,
|
|
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
|
|
*
|
|
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
|
|
*
|
|
* @internal
|
|
*/
|
|
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';
|
|
}
|
|
}
|