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<?php

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* This file is part of the Symfony package.

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* (c) Fabien Potencier <fabien@symfony.com>

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* For the full copyright and license information, please view the LICENSE

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* file that was distributed with this source code.

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namespace WPForms\Vendor\Symfony\Component\CssSelector\Parser;

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/**

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* CSS selector reader.

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* This component is a port of the Python cssselect library,

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* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.

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* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>

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* @internal

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class Reader

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{

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/**

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* @var string

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private $source;

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/**

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* @var int

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private $length;

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/**

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* @var int

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private $position = 0;

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/**

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* @param string $source

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public function __construct($source)

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{

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$this->source = $source;

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$this->length = \strlen($source);

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}

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/**

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* @return bool

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public function isEOF()

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{

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return $this->position >= $this->length;

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}

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/**

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* @return int

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public function getPosition()

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{

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return $this->position;

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}

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/**

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* @return int

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public function getRemainingLength()

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{

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return $this->length - $this->position;

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}

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/**

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* @param int $length

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* @param int $offset

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* @return string

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public function getSubstring($length, $offset = 0)

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{

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return \substr($this->source, $this->position + $offset, $length);

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}

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/**

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* @param string $string

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* @return int

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public function getOffset($string)

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{

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$position = \strpos($this->source, $string, $this->position);

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return \false === $position ? \false : $position - $this->position;

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}

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/**

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* @param string $pattern

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* @return array|false

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public function findPattern($pattern)

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{

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$source = \substr($this->source, $this->position);

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if (\preg_match($pattern, $source, $matches)) {

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return $matches;

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}

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return \false;

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}

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/**

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* @param int $length

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public function moveForward($length)

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{

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$this->position += $length;

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}

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public function moveToEnd()

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{

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$this->position = $this->length;

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}

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}

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