123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126 |
- <?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;
- /**
- * CSS selector reader.
- *
- * 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 Reader
- {
- /**
- * @var string
- */
- private $source;
- /**
- * @var int
- */
- private $length;
- /**
- * @var int
- */
- private $position = 0;
- /**
- * @param string $source
- */
- public function __construct($source)
- {
- $this->source = $source;
- $this->length = strlen($source);
- }
- /**
- * @return bool
- */
- public function isEOF()
- {
- return $this->position >= $this->length;
- }
- /**
- * @return int
- */
- public function getPosition()
- {
- return $this->position;
- }
- /**
- * @return int
- */
- public function getRemainingLength()
- {
- return $this->length - $this->position;
- }
- /**
- * @param int $length
- * @param int $offset
- *
- * @return string
- */
- public function getSubstring($length, $offset = 0)
- {
- return substr($this->source, $this->position + $offset, $length);
- }
- /**
- * @param string $string
- *
- * @return int
- */
- public function getOffset($string)
- {
- $position = strpos($this->source, $string, $this->position);
- return false === $position ? false : $position - $this->position;
- }
- /**
- * @param string $pattern
- *
- * @return array|false
- */
- public function findPattern($pattern)
- {
- $source = substr($this->source, $this->position);
- if (preg_match($pattern, $source, $matches)) {
- return $matches;
- }
- return false;
- }
- /**
- * @param int $length
- */
- public function moveForward($length)
- {
- $this->position += $length;
- }
- public function moveToEnd()
- {
- $this->position = $this->length;
- }
- }
|