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- <?php
- namespace Symfony\Component\CssSelector\Parser;
- class Reader
- {
-
- private $source;
-
- private $length;
-
- private $position = 0;
-
- public function __construct($source)
- {
- $this->source = $source;
- $this->length = strlen($source);
- }
-
- public function isEOF()
- {
- return $this->position >= $this->length;
- }
-
- public function getPosition()
- {
- return $this->position;
- }
-
- public function getRemainingLength()
- {
- return $this->length - $this->position;
- }
-
- public function getSubstring($length, $offset = 0)
- {
- return substr($this->source, $this->position + $offset, $length);
- }
-
- public function getOffset($string)
- {
- $position = strpos($this->source, $string, $this->position);
- return false === $position ? false : $position - $this->position;
- }
-
- public function findPattern($pattern)
- {
- $source = substr($this->source, $this->position);
- if (preg_match($pattern, $source, $matches)) {
- return $matches;
- }
- return false;
- }
-
- public function moveForward($length)
- {
- $this->position += $length;
- }
-
- public function moveToEnd()
- {
- $this->position = $this->length;
- }
- }
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