| /vendor/symfony/dom-crawler/Link.php |
|---|
| @@ -0,0 +1,224 @@ |
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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; |
| |
| /** |
| * Link represents an HTML link (an HTML a, area or link tag). |
| * |
| * @author Fabien Potencier <fabien@symfony.com> |
| */ |
| class Link |
| { |
| /** |
| * @var \DOMElement |
| */ |
| protected $node; |
| |
| /** |
| * @var string The method to use for the link |
| */ |
| protected $method; |
| |
| /** |
| * @var string The URI of the page where the link is embedded (or the base href) |
| */ |
| protected $currentUri; |
| |
| /** |
| * Constructor. |
| * |
| * @param \DOMElement $node A \DOMElement instance |
| * @param string $currentUri The URI of the page where the link is embedded (or the base href) |
| * @param string $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, $currentUri, $method = 'GET') |
| { |
| if (!in_array(strtolower(substr($currentUri, 0, 4)), array('http', 'file'))) { |
| throw new \InvalidArgumentException(sprintf('Current URI must be an absolute URL ("%s").', $currentUri)); |
| } |
| |
| $this->setNode($node); |
| $this->method = $method ? strtoupper($method) : null; |
| $this->currentUri = $currentUri; |
| } |
| |
| /** |
| * Gets the node associated with this link. |
| * |
| * @return \DOMElement A \DOMElement instance |
| */ |
| public function getNode() |
| { |
| return $this->node; |
| } |
| |
| /** |
| * Gets the method associated with this link. |
| * |
| * @return string The method |
| */ |
| public function getMethod() |
| { |
| return $this->method; |
| } |
| |
| /** |
| * Gets the URI associated with this link. |
| * |
| * @return string The URI |
| */ |
| public function getUri() |
| { |
| $uri = trim($this->getRawUri()); |
| |
| // absolute URL? |
| if (null !== parse_url($uri, PHP_URL_SCHEME)) { |
| return $uri; |
| } |
| |
| // empty URI |
| if (!$uri) { |
| return $this->currentUri; |
| } |
| |
| // an anchor |
| if ('#' === $uri[0]) { |
| return $this->cleanupAnchor($this->currentUri).$uri; |
| } |
| |
| $baseUri = $this->cleanupUri($this->currentUri); |
| |
| if ('?' === $uri[0]) { |
| return $baseUri.$uri; |
| } |
| |
| // absolute URL with relative schema |
| if (0 === strpos($uri, '//')) { |
| return preg_replace('#^([^/]*)//.*$#', '$1', $baseUri).$uri; |
| } |
| |
| $baseUri = preg_replace('#^(.*?//[^/]*)(?:\/.*)?$#', '$1', $baseUri); |
| |
| // absolute path |
| if ('/' === $uri[0]) { |
| return $baseUri.$uri; |
| } |
| |
| // relative path |
| $path = parse_url(substr($this->currentUri, strlen($baseUri)), PHP_URL_PATH); |
| $path = $this->canonicalizePath(substr($path, 0, strrpos($path, '/')).'/'.$uri); |
| |
| return $baseUri.('' === $path || '/' !== $path[0] ? '/' : '').$path; |
| } |
| |
| /** |
| * Returns raw URI data. |
| * |
| * @return string |
| */ |
| protected function getRawUri() |
| { |
| return $this->node->getAttribute('href'); |
| } |
| |
| /** |
| * Returns the canonicalized URI path (see RFC 3986, section 5.2.4). |
| * |
| * @param string $path URI path |
| * |
| * @return string |
| */ |
| protected function canonicalizePath($path) |
| { |
| if ('' === $path || '/' === $path) { |
| return $path; |
| } |
| |
| if ('.' === substr($path, -1)) { |
| $path .= '/'; |
| } |
| |
| $output = array(); |
| |
| 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 |
| */ |
| protected function setNode(\DOMElement $node) |
| { |
| if ('a' !== $node->nodeName && 'area' !== $node->nodeName && 'link' !== $node->nodeName) { |
| throw new \LogicException(sprintf('Unable to navigate from a "%s" tag.', $node->nodeName)); |
| } |
| |
| $this->node = $node; |
| } |
| |
| /** |
| * Removes the query string and the anchor from the given uri. |
| * |
| * @param string $uri The uri to clean |
| * |
| * @return string |
| */ |
| private function cleanupUri($uri) |
| { |
| return $this->cleanupQuery($this->cleanupAnchor($uri)); |
| } |
| |
| /** |
| * Remove the query string from the uri. |
| * |
| * @param string $uri |
| * |
| * @return string |
| */ |
| private function cleanupQuery($uri) |
| { |
| if (false !== $pos = strpos($uri, '?')) { |
| return substr($uri, 0, $pos); |
| } |
| |
| return $uri; |
| } |
| |
| /** |
| * Remove the anchor from the uri. |
| * |
| * @param string $uri |
| * |
| * @return string |
| */ |
| private function cleanupAnchor($uri) |
| { |
| if (false !== $pos = strpos($uri, '#')) { |
| return substr($uri, 0, $pos); |
| } |
| |
| return $uri; |
| } |
| } |
