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<?php |
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namespace League\Plates\Extension; |
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use League\Plates\Engine; |
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use League\Plates\Template\Template; |
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use LogicException; |
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/** |
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* Extension that adds the ability to create "cache busted" asset URLs. |
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*/ |
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class Asset implements ExtensionInterface |
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{ |
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/** |
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* Instance of the current template. |
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* @var Template |
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*/ |
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public $template; |
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/** |
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* Path to asset directory. |
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* @var string |
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*/ |
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public $path; |
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/** |
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* Enables the filename method. |
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* @var boolean |
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*/ |
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public $filenameMethod; |
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/** |
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* Enables hashing for last updated value in filename. |
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* @var boolean |
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*/ |
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public $hashLastUpdatedValue; |
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/** |
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* Create new Asset instance. |
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* @param string $path |
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* @param boolean $filenameMethod |
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* @param boolean $hashLastUpdatedValue |
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*/ |
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public function __construct($path, $filenameMethod = false, $hashLastUpdatedValue = false) |
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{ |
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$this->path = rtrim($path, '/'); |
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$this->filenameMethod = $filenameMethod; |
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$this->hashLastUpdatedValue = $hashLastUpdatedValue; |
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} |
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/** |
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* Register extension function. |
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* @param Engine $engine |
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* @return null |
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*/ |
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public function register(Engine $engine) |
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{ |
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$engine->registerFunction('asset', array($this, 'cachedAssetUrl')); |
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} |
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/** |
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* Create "cache busted" asset URL. |
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* @param string $url |
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* @return string |
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*/ |
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public function cachedAssetUrl($url) |
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{ |
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$filePath = $this->path . '/' . ltrim($url, '/'); |
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if (!file_exists($filePath)) { |
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throw new LogicException( |
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'Unable to locate the asset "' . $url . '" in the "' . $this->path . '" directory.' |
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); |
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} |
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$lastUpdated = filemtime($filePath); |
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$pathInfo = pathinfo($url); |
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if ($this->hashLastUpdatedValue) { |
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$lastUpdated = hash('crc32b', $lastUpdated); |
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} |
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if ($pathInfo['dirname'] === '.') { |
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$directory = ''; |
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} elseif ($pathInfo['dirname'] === '/') { |
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$directory = '/'; |
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} else { |
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$directory = $pathInfo['dirname'] . '/'; |
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} |
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if ($this->filenameMethod) { |
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return $directory . $pathInfo['filename'] . '.' . $lastUpdated . '.' . $pathInfo['extension']; |
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} |
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return $directory . $pathInfo['filename'] . '.' . $pathInfo['extension'] . '?v=' . $lastUpdated; |
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} |
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} |
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thephpleague /
plates
