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<?php |
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namespace lucidtaz\yii2scssphp; |
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use Leafo\ScssPhp\Compiler; |
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use lucidtaz\yii2scssphp\storage\FsStorage; |
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use lucidtaz\yii2scssphp\storage\Storage; |
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use RuntimeException; |
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use Yii; |
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use yii\base\Component; |
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use yii\helpers\FileHelper; |
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use yii\web\AssetConverterInterface; |
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class ScssAssetConverter extends Component implements AssetConverterInterface |
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{ |
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/** |
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* @var Storage |
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*/ |
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public $storage; |
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/** |
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* @var boolean whether the source asset file should be converted even if |
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* its result already exists. You may want to set this to be `true` during |
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* the development stage to make sure the converted assets are always up-to- |
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* 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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private $compiler; |
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/** |
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* Set the destination folder where to copy the compiled css file. |
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* If the value is null, then it will be generated into the sourcePath of the asset bundle. |
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* |
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* ``` |
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* 'assetManager' => [ |
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* 'converter' => [ |
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* 'class' => \lucidtaz\yii2scssphp\ScssAssetConverter::class, |
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* 'distFolder' => 'css', |
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* ], |
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* ], |
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* ``` |
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* |
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* @var string|null |
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*/ |
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public $distFolder; |
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/** |
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* @throws \yii\base\InvalidConfigException |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if (!isset($this->storage)) { |
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$this->storage = new FsStorage; |
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} |
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$this->compiler = Yii::createObject(Compiler::class); |
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} |
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/** |
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* Converts a given SCSS asset file into a CSS 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 $basePath. |
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* @throws \yii\base\Exception |
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*/ |
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public function convert($asset, $basePath) |
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{ |
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$extension = $this->getExtension($asset); |
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if ($extension !== 'scss') { |
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return $asset; |
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} |
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$cssAsset = $this->replaceExtension($asset, 'css'); |
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$inFile = "$basePath/$asset"; |
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$outFile = $this->distFolder ? "$basePath/$this->distFolder/$cssAsset" : "$basePath/$cssAsset"; |
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$this->compiler->setImportPaths(dirname($inFile)); |
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if (!$this->storage->exists($inFile)) { |
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Yii::error("Input file $inFile not found.", __METHOD__); |
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return $asset; |
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} |
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$this->createDistFolderIfNotExists($outFile); |
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$this->convertAndSaveIfNeeded($inFile, $outFile); |
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return $this->distFolder ? $this->distFolder . '/' . $cssAsset : $cssAsset; |
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} |
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private function getExtension(string $filename): string |
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{ |
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return pathinfo($filename, PATHINFO_EXTENSION); |
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} |
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private function replaceExtension(string $filename, string $newExtension): string |
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{ |
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$extensionlessFilename = pathinfo($filename, PATHINFO_FILENAME); |
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return "$extensionlessFilename.$newExtension"; |
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} |
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private function convertAndSaveIfNeeded(string $inFile, string $outFile) |
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{ |
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if ($this->shouldConvert($inFile, $outFile)) { |
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$css = $this->compiler->compile($this->storage->get($inFile), $inFile); |
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$this->storage->put($outFile, $css); |
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} |
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} |
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private function shouldConvert(string $inFile, string $outFile): bool |
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{ |
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if (!$this->storage->exists($outFile)) { |
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return true; |
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} |
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if ($this->forceConvert) { |
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return true; |
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} |
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try { |
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return $this->isOlder($outFile, $inFile); |
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} catch (RuntimeException $e) { |
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Yii::warning('Encountered RuntimeException message "' . $e->getMessage() . '", going to convert.', __METHOD__); |
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return true; |
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} |
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} |
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private function isOlder(string $fileA, string $fileB): bool |
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{ |
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return $this->storage->getMtime($fileA) < $this->storage->getMtime($fileB); |
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} |
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/** |
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* @param string $outFile |
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* @throws \yii\base\Exception |
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*/ |
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private function createDistFolderIfNotExists($outFile) |
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{ |
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$dir = dirname($outFile); |
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if (!is_dir($dir)) { |
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FileHelper::createDirectory($dir); |
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} |
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} |
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} |
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LucidTaZ /
yii2-scssphp
