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<?php |
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|
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/* |
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* This file is part of the Assetic package, an OpenSky project. |
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* |
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* (c) 2010-2014 OpenSky Project Inc |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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namespace Assetic\Asset; |
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|
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use Assetic\Filter\FilterInterface; |
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use Assetic\Util\VarUtils; |
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|
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/** |
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* Represents an asset loaded via an HTTP request. |
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* |
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* @author Kris Wallsmith <[email protected]> |
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*/ |
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class HttpAsset extends BaseAsset |
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{ |
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private $sourceUrl; |
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private $ignoreErrors; |
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|
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/** |
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* Constructor. |
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* |
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* @param string $sourceUrl The source URL |
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* @param array $filters An array of filters |
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* @param Boolean $ignoreErrors |
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* @param array $vars |
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* |
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* @throws \InvalidArgumentException If the first argument is not an URL |
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*/ |
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public function __construct($sourceUrl, $filters = array(), $ignoreErrors = false, array $vars = array()) |
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{ |
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if (0 === strpos($sourceUrl, '//')) { |
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$sourceUrl = 'http:'.$sourceUrl; |
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} elseif (false === strpos($sourceUrl, '://')) { |
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throw new \InvalidArgumentException(sprintf('"%s" is not a valid URL.', $sourceUrl)); |
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} |
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|
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$this->sourceUrl = $sourceUrl; |
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$this->ignoreErrors = $ignoreErrors; |
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|
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list($scheme, $url) = explode('://', $sourceUrl, 2); |
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list($host, $path) = explode('/', $url, 2); |
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|
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parent::__construct($filters, $scheme.'://'.$host, $path, $vars); |
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} |
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|
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public function load(FilterInterface $additionalFilter = null) |
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{ |
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$content = @file_get_contents( |
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VarUtils::resolve($this->sourceUrl, $this->getVars(), $this->getValues()) |
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); |
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|
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if (false === $content && !$this->ignoreErrors) { |
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throw new \RuntimeException(sprintf('Unable to load asset from URL "%s"', $this->sourceUrl)); |
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} |
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|
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$this->doLoad($content, $additionalFilter); |
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} |
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|
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public function getLastModified() |
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{ |
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if (false !== @file_get_contents($this->sourceUrl, false, stream_context_create(array('http' => array('method' => 'HEAD'))))) { |
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foreach ($http_response_header as $header) { |
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if (0 === stripos($header, 'Last-Modified: ')) { |
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list(, $mtime) = explode(':', $header, 2); |
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|
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return strtotime(trim($mtime)); |
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} |
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} |
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} |
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} |
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} |
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|
