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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\DomCrawler;
/**
* Any HTML element that can link to an URI.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
abstract class AbstractUriElement
{
/**
* @var \DOMElement
*/
protected $node;
/**
* @var string|null The method to use for the element
*/
protected $method;
/**
* @var string The URI of the page where the element is embedded (or the base href)
*/
protected $currentUri;
/**
* @param \DOMElement $node A \DOMElement instance
* @param string|null $currentUri The URI of the page where the link is embedded (or the base href)
* @param string|null $method The method to use for the link (GET by default)
*
* @throws \InvalidArgumentException if the node is not a link
*/
public function __construct(\DOMElement $node, string $currentUri = null, ?string $method = 'GET')
{
$this->setNode($node);
$this->method = $method ? strtoupper($method) : null;
$this->currentUri = $currentUri;
$elementUriIsRelative = null === parse_url(trim($this->getRawUri()), \PHP_URL_SCHEME);
$baseUriIsAbsolute = null !== $this->currentUri && \in_array(strtolower(substr($this->currentUri, 0, 4)), ['http', 'file']);
if ($elementUriIsRelative && !$baseUriIsAbsolute) {
throw new \InvalidArgumentException(sprintf('The URL of the element is relative, so you must define its base URI passing an absolute URL to the constructor of the "%s" class ("%s" was passed).', __CLASS__, $this->currentUri));
}
}
/**
* Gets the node associated with this link.
*
* @return \DOMElement
*/
public function getNode()
{
return $this->node;
}
/**
* Gets the method associated with this link.
*
* @return string
*/
public function getMethod()
{
return $this->method ?? 'GET';
}
/**
* Gets the URI associated with this link.
*
* @return string
*/
public function getUri()
{
return UriResolver::resolve($this->getRawUri(), $this->currentUri);
}
/**
* Returns raw URI data.
*
* @return string
*/
abstract protected function getRawUri();
/**
* Returns the canonicalized URI path (see RFC 3986, section 5.2.4).
*
* @param string $path URI path
*
* @return string
*/
protected function canonicalizePath(string $path)
{
if ('' === $path || '/' === $path) {
return $path;
}
if (str_ends_with($path, '.')) {
$path .= '/';
}
$output = [];
foreach (explode('/', $path) as $segment) {
if ('..' === $segment) {
array_pop($output);
} elseif ('.' !== $segment) {
$output[] = $segment;
}
}
return implode('/', $output);
}
/**
* Sets current \DOMElement instance.
*
* @param \DOMElement $node A \DOMElement instance
*
* @throws \LogicException If given node is not an anchor
*/
abstract protected function setNode(\DOMElement $node);
}
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