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62 lines
1.9 KiB
62 lines
1.9 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\web; |
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use Yii; |
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use yii\base\Component; |
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/** |
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* AssetConverter supports conversion of several popular script formats into JS or CSS scripts. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @since 2.0 |
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*/ |
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class AssetConverter extends Component implements IAssetConverter |
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{ |
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/** |
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* @var array the commands that are used to perform the asset conversion. |
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* The keys are the asset file extension names, and the values are the corresponding |
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* target script types (either "css" or "js") and the commands used for the conversion. |
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*/ |
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public $commands = array( |
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'less' => array('css', 'lessc {from} {to}'), |
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'scss' => array('css', 'sass {from} {to}'), |
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'sass' => array('css', 'sass {from} {to}'), |
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'styl' => array('js', 'stylus < {from} > {to}'), |
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); |
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/** |
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* Converts a given asset file into a CSS or JS file. |
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* @param string $asset the asset file path, relative to $basePath |
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* @param string $basePath the directory the $asset is relative to. |
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* @param string $baseUrl the URL corresponding to $basePath |
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* @return string the URL to the converted asset file. |
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*/ |
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public function convert($asset, $basePath, $baseUrl) |
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{ |
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$pos = strrpos($asset, '.'); |
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if ($pos !== false) { |
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$ext = substr($asset, $pos + 1); |
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if (isset($this->commands[$ext])) { |
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list ($ext, $command) = $this->commands[$ext]; |
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$result = substr($asset, 0, $pos + 1) . $ext; |
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if (@filemtime("$basePath/$result") < filemtime("$basePath/$asset")) { |
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$output = array(); |
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$command = strtr($command, array( |
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'{from}' => "$basePath/$asset", |
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'{to}' => "$basePath/$result", |
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)); |
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exec($command, $output); |
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Yii::info("Converted $asset into $result: " . implode("\n", $output), __METHOD__); |
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} |
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return "$baseUrl/$result"; |
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} |
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} |
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return "$baseUrl/$asset"; |
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} |
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} |