80 lines
2.3 KiB
PHP
80 lines
2.3 KiB
PHP
<?php
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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) 2010-2012 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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namespace Assetic\Asset;
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use Assetic\Util\PathUtils;
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use Assetic\Filter\FilterInterface;
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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 <kris.wallsmith@gmail.com>
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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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* Constructor.
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*
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* @param string $sourceUrl The source URL
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* @param array $filters An array of filters
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*
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* @throws \InvalidArgumentException If the first argument is not an URL
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*/
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public function __construct($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.', $sourceUrl));
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}
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$this->sourceUrl = $sourceUrl;
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$this->ignoreErrors = $ignoreErrors;
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list($scheme, $url) = explode('://', $sourceUrl, 2);
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list($host, $path) = explode('/', $url, 2);
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parent::__construct($filters, $scheme.'://'.$host, $path, $vars);
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}
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public function load(FilterInterface $additionalFilter = null)
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{
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if (false === $content = @file_get_contents(PathUtils::resolvePath(
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$this->sourceUrl, $this->getVars(), $this->getValues()))) {
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if ($this->ignoreErrors) {
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return;
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} else {
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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, $additionalFilter);
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}
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public function getLastModified()
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{
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if (false !== @file_get_contents($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(':', $header, 2);
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return strtotime(trim($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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