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<?php |
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/** |
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* This file is part of the m1\twig-asset-rev-extension library |
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* |
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* (c) m1 <[email protected]> |
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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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* @package m1/twig-asset-rev-extension |
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* @version 0.1.0 |
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* @author Miles Croxford <[email protected]> |
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* @copyright Copyright (c) Miles Croxford <[email protected]> |
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* @license http://github.com/m1/TwigAssetRevExtension/blob/master/LICENSE |
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* @link http://github.com/m1/TwigAssetRevExtension/blob/master/README.MD Documentation |
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*/ |
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namespace M1\TwigAssetRevExtension; |
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/** |
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* The TwigAssetRevExtension class |
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* |
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* @since 0.1.0 |
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*/ |
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class TwigAssetRevExtension extends \Twig_Extension |
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{ |
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/** |
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* The file extensions to check if there is a minified version |
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* |
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* @var array |
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*/ |
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private static $minify_exts = array('css', 'js'); |
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/** |
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* The array of assets rev, raw_asset => rev_asset |
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* |
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* @var array |
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*/ |
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private $assets; |
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/** |
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* Whether to search for minified rev'd versions of the assets |
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* |
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* @var bool |
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*/ |
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private $minified; |
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/** |
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* The TwigAssetRevExtension constructor |
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* |
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* @param array $assets The array of assets and rev'd assets |
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* @param bool $minified Whether to search for minified rev'd assets |
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*/ |
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public function __construct(array $assets, $minified = true) |
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{ |
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$this->assets = $assets; |
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$this->minified = $minified; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getFilters() |
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{ |
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return array( |
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new \Twig_SimpleFilter('asset_rev', array($this, 'assetRev'), array('needs_environment' => true)), |
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); |
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} |
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/** |
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* Gets the rev'd asset, |
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* |
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* @param \Twig_Environment $env The twig environment |
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* @param string $asset The asset string to rev |
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* |
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* @return string The rev'd asset if available, else the original asset |
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*/ |
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public function assetRev(\Twig_Environment $env, $asset) |
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{ |
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$pathinfo = pathinfo($asset); |
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if (!isset($pathinfo['extension'])) { |
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return $asset; |
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} |
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return ($this->minify($env, $pathinfo)) ?: ((isset($this->assets[$asset])) ? $this->assets[$asset] : $asset); |
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} |
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/** |
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* Gets the minified asset |
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* |
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* @param \Twig_Environment $env The twig environment |
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* @param array $pathinfo The pathinfo for the asset |
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* |
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* @return bool|string The minified rev'd asset if available, else false |
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*/ |
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public function minify($env, $pathinfo) |
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{ |
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if ($this->minified && !$env->isDebug() && in_array($pathinfo['extension'], self::$minify_exts)) { |
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$min = sprintf( |
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"%s/%s.min.%s", |
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$pathinfo['dirname'], |
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$pathinfo['filename'], |
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$pathinfo['extension'] |
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); |
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if (isset($this->assets[$min])) { |
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return $this->assets[$min]; |
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} |
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} |
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return false; |
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} |
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/** |
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* Returns the name of the extension. |
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* |
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* @return string The extension name |
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*/ |
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public function getName() |
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{ |
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return 'asset_rev'; |
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} |
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} |
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