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95 lines
3.1 KiB
95 lines
3.1 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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use yii\base\Exception; |
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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 AssetConverterInterface |
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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 = [ |
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'less' => ['css', 'lessc {from} {to} --no-color'], |
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'scss' => ['css', 'sass {from} {to}'], |
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'sass' => ['css', 'sass {from} {to}'], |
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'styl' => ['js', 'stylus < {from} > {to}'], |
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'coffee' => ['js', 'coffee -p {from} > {to}'], |
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'ts' => ['js', 'tsc --out {to} {from}'], |
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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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* @return string the converted asset file path, relative to $basePath. |
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*/ |
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public function convert($asset, $basePath) |
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{ |
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$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/$asset")) { |
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$this->runCommand($command, $basePath, $asset, $result); |
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} |
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return $result; |
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} |
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} |
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return $asset; |
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} |
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/** |
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* Runs a command to convert asset files. |
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* @param string $command the command to run |
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* @param string $basePath asset base path and command working directory |
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* @param string $asset the name of the asset file |
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* @param string $result the name of the file to be generated by the converter command |
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* @return bool true on success, false on failure. Failures will be logged. |
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*/ |
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protected function runCommand($command, $basePath, $asset, $result) |
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{ |
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$command = strtr($command, [ |
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'{from}' => escapeshellarg("$basePath/$asset"), |
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'{to}' => escapeshellarg("$basePath/$result"), |
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]); |
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$descriptor = array( |
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1 => array('pipe', 'w'), |
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2 => array('pipe', 'w'), |
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); |
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$pipes = array(); |
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$proc = proc_open($command, $descriptor, $pipes, $basePath); |
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$stdout = stream_get_contents($pipes[1]); |
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$stderr = stream_get_contents($pipes[2]); |
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foreach($pipes as $pipe) { |
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fclose($pipe); |
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} |
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$status = proc_close($proc); |
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if ($status === 0) { |
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Yii::trace("Converted $asset into $result:\nSTDOUT:\n$stdout\nSTDERR:\n$stderr", __METHOD__); |
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} elseif (YII_DEBUG) { |
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throw new Exception("AssetConverter command '$command' failed with exit code $status:\nSTDOUT:\n$stdout\nSTDERR:\n$stderr"); |
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} else { |
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Yii::error("AssetConverter command '$command' failed with exit code $status:\nSTDOUT:\n$stdout\nSTDERR:\n$stderr"); |
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} |
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return $status === 0; |
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} |
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}
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