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<?php |
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/** |
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* @link https://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license https://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 formats into JS or CSS files. |
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* |
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* It is used by [[AssetManager]] to convert files after they have been published. |
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* |
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* @author Qiang Xue <[email protected]> |
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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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* The command placeholders: `{from}` - source file, `{to}` - converted file. |
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* |
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* You may also use a [path alias](guide:concept-aliases) to specify the location of the command: |
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* |
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* ```php |
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* [ |
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* 'styl' => ['css', '@app/node_modules/bin/stylus < {from} > {to}'], |
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* ] |
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* ``` |
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* |
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* Note: `Yii::getAlias()` can replace alias at the begin of the command only. |
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* |
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* @see https://sass-lang.com/documentation/cli/ SASS/SCSS |
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*/ |
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public $commands = [ |
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'less' => ['css', 'lessc {from} {to} --no-color --source-map'], |
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'scss' => ['css', 'sass --style=compressed {from} {to}'], |
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'sass' => ['css', 'sass --style=compressed {from} {to}'], |
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'styl' => ['css', '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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* @var bool whether the source asset file should be converted even if its result already exists. |
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* You may want to set this to be `true` during the development stage to make sure the converted |
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* assets are always up-to-date. Do not set this to true on production servers as it will |
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* significantly degrade the performance. |
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*/ |
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public $forceConvert = false; |
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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) . $ext; |
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if ($this->forceConvert || @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. If prefixed with an `@` it will be treated as a [path alias](guide:concept-aliases). |
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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 $result the name of the file to be generated by the converter command |
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* @return bool true on success, false on failure. Failures will be logged. |
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* @throws \yii\base\Exception when the command fails and YII_DEBUG is true. |
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* In production mode the error will be logged. |
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*/ |
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protected function runCommand($command, $basePath, $asset, $result) |
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{ |
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$command = Yii::getAlias($command); |
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$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 = [ |
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1 => ['pipe', 'w'], |
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2 => ['pipe', 'w'], |
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]; |
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$pipes = []; |
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$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::debug("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", __METHOD__); |
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} |
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return $status === 0; |
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} |
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} |
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yiisoft /
yii2
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