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<?php |
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namespace JK\Sam\Filter\Merge; |
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use JK\Sam\Filter\Filter; |
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use SplFileInfo; |
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use Symfony\Component\Filesystem\Filesystem; |
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/** |
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* Merge different source files into one. |
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*/ |
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class MergeFilter extends Filter |
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{ |
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/** |
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* @param SplFileInfo[] $sources |
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* @param SplFileInfo[] $destinations |
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* @return array|SplFileInfo[] |
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*/ |
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public function run(array $sources, array $destinations) |
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{ |
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$fileSystem = new Filesystem(); |
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$mergedFiles = []; |
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foreach ($this->getSupportedExtensions() as $extension) { |
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$shouldAddMergeFile = false; |
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$mergedFile = $this->getCacheDir().'merged.'.$extension; |
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// creating the merge file if not exists |
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if (!$fileSystem->exists($mergedFile)) { |
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$this->addNotification('creating '.$mergedFile.' merged file'); |
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$fileSystem->touch($mergedFile); |
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} |
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// reset the merge file |
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$fileSystem->dumpFile($mergedFile, ''); |
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foreach ($sources as $source) { |
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if ($source->getExtension() !== $extension) { |
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continue; |
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} |
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$this->addNotification('merging file '.$source); |
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// append the current content to the merge file |
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$content = file_get_contents($source); |
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$mergedContent = file_get_contents($mergedFile); |
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$fileSystem->dumpFile($mergedFile, $mergedContent.$content); |
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$shouldAddMergeFile = true; |
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} |
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if ($shouldAddMergeFile) { |
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$mergedFiles[] = $mergedFile; |
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} |
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} |
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return $mergedFiles; |
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} |
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/** |
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* Return the file extensions supported by this filter |
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* |
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* @return string[] |
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*/ |
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public function getSupportedExtensions() |
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{ |
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return [ |
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'css', |
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'js', |
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]; |
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} |
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} |
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johnkrovitch /
Sam
