annotate vendor/symfony/css-selector/Parser/Reader.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 129ea1e6d783
children
rev   line source
Chris@0 1 <?php
Chris@0 2
Chris@0 3 /*
Chris@0 4 * This file is part of the Symfony package.
Chris@0 5 *
Chris@0 6 * (c) Fabien Potencier <fabien@symfony.com>
Chris@0 7 *
Chris@0 8 * For the full copyright and license information, please view the LICENSE
Chris@0 9 * file that was distributed with this source code.
Chris@0 10 */
Chris@0 11
Chris@0 12 namespace Symfony\Component\CssSelector\Parser;
Chris@0 13
Chris@0 14 /**
Chris@0 15 * CSS selector reader.
Chris@0 16 *
Chris@0 17 * This component is a port of the Python cssselect library,
Chris@0 18 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
Chris@0 19 *
Chris@0 20 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
Chris@0 21 *
Chris@0 22 * @internal
Chris@0 23 */
Chris@0 24 class Reader
Chris@0 25 {
Chris@0 26 private $source;
Chris@0 27 private $length;
Chris@0 28 private $position = 0;
Chris@0 29
Chris@0 30 /**
Chris@0 31 * @param string $source
Chris@0 32 */
Chris@0 33 public function __construct($source)
Chris@0 34 {
Chris@0 35 $this->source = $source;
Chris@17 36 $this->length = \strlen($source);
Chris@0 37 }
Chris@0 38
Chris@0 39 /**
Chris@0 40 * @return bool
Chris@0 41 */
Chris@0 42 public function isEOF()
Chris@0 43 {
Chris@0 44 return $this->position >= $this->length;
Chris@0 45 }
Chris@0 46
Chris@0 47 /**
Chris@0 48 * @return int
Chris@0 49 */
Chris@0 50 public function getPosition()
Chris@0 51 {
Chris@0 52 return $this->position;
Chris@0 53 }
Chris@0 54
Chris@0 55 /**
Chris@0 56 * @return int
Chris@0 57 */
Chris@0 58 public function getRemainingLength()
Chris@0 59 {
Chris@0 60 return $this->length - $this->position;
Chris@0 61 }
Chris@0 62
Chris@0 63 /**
Chris@0 64 * @param int $length
Chris@0 65 * @param int $offset
Chris@0 66 *
Chris@0 67 * @return string
Chris@0 68 */
Chris@0 69 public function getSubstring($length, $offset = 0)
Chris@0 70 {
Chris@0 71 return substr($this->source, $this->position + $offset, $length);
Chris@0 72 }
Chris@0 73
Chris@0 74 /**
Chris@0 75 * @param string $string
Chris@0 76 *
Chris@0 77 * @return int
Chris@0 78 */
Chris@0 79 public function getOffset($string)
Chris@0 80 {
Chris@0 81 $position = strpos($this->source, $string, $this->position);
Chris@0 82
Chris@0 83 return false === $position ? false : $position - $this->position;
Chris@0 84 }
Chris@0 85
Chris@0 86 /**
Chris@0 87 * @param string $pattern
Chris@0 88 *
Chris@0 89 * @return array|false
Chris@0 90 */
Chris@0 91 public function findPattern($pattern)
Chris@0 92 {
Chris@0 93 $source = substr($this->source, $this->position);
Chris@0 94
Chris@0 95 if (preg_match($pattern, $source, $matches)) {
Chris@0 96 return $matches;
Chris@0 97 }
Chris@0 98
Chris@0 99 return false;
Chris@0 100 }
Chris@0 101
Chris@0 102 /**
Chris@0 103 * @param int $length
Chris@0 104 */
Chris@0 105 public function moveForward($length)
Chris@0 106 {
Chris@0 107 $this->position += $length;
Chris@0 108 }
Chris@0 109
Chris@0 110 public function moveToEnd()
Chris@0 111 {
Chris@0 112 $this->position = $this->length;
Chris@0 113 }
Chris@0 114 }