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- <?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\XPath;
- /**
- * XPath expression translator interface.
- *
- * 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 XPathExpr
- {
- /**
- * @var string
- */
- private $path;
- /**
- * @var string
- */
- private $element;
- /**
- * @var string
- */
- private $condition;
- /**
- * @param string $path
- * @param string $element
- * @param string $condition
- * @param bool $starPrefix
- */
- public function __construct($path = '', $element = '*', $condition = '', $starPrefix = false)
- {
- $this->path = $path;
- $this->element = $element;
- $this->condition = $condition;
- if ($starPrefix) {
- $this->addStarPrefix();
- }
- }
- /**
- * @return string
- */
- public function getElement()
- {
- return $this->element;
- }
- /**
- * @param $condition
- *
- * @return $this
- */
- public function addCondition($condition)
- {
- $this->condition = $this->condition ? sprintf('%s and (%s)', $this->condition, $condition) : $condition;
- return $this;
- }
- /**
- * @return string
- */
- public function getCondition()
- {
- return $this->condition;
- }
- /**
- * @return $this
- */
- public function addNameTest()
- {
- if ('*' !== $this->element) {
- $this->addCondition('name() = '.Translator::getXpathLiteral($this->element));
- $this->element = '*';
- }
- return $this;
- }
- /**
- * @return $this
- */
- public function addStarPrefix()
- {
- $this->path .= '*/';
- return $this;
- }
- /**
- * Joins another XPathExpr with a combiner.
- *
- * @param string $combiner
- * @param XPathExpr $expr
- *
- * @return $this
- */
- public function join($combiner, XPathExpr $expr)
- {
- $path = $this->__toString().$combiner;
- if ('*/' !== $expr->path) {
- $path .= $expr->path;
- }
- $this->path = $path;
- $this->element = $expr->element;
- $this->condition = $expr->condition;
- return $this;
- }
- /**
- * @return string
- */
- public function __toString()
- {
- $path = $this->path.$this->element;
- $condition = null === $this->condition || '' === $this->condition ? '' : '['.$this->condition.']';
- return $path.$condition;
- }
- }
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