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<?php declare(strict_types=1); |
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/** |
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* PHP version 8.1 |
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* |
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* This source file is subject to the license that is bundled with this package in the file LICENSE. |
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*/ |
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namespace PhUml\Processors; |
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use Symfony\Component\Process\Process; |
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use Symplify\SmartFileSystem\SmartFileSystem; |
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/** |
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* It generates a `png` class diagram from a digraph in DOT format |
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* |
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* It takes a digraph in DOT format, saves it to a temporary location and creates a `png` class |
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* diagram out of it. |
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* It uses either the `dot` or `neato` command to create the image |
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*/ |
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final class ImageProcessor implements Processor |
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{ |
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public static function neato(SmartFileSystem $filesystem): ImageProcessor |
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{ |
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return new ImageProcessor(new ImageProcessorName('neato'), $filesystem); |
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} |
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public static function dot(SmartFileSystem $filesystem): ImageProcessor |
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{ |
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return new ImageProcessor(new ImageProcessorName('dot'), $filesystem); |
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} |
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private function __construct(private readonly ImageProcessorName $name, private readonly SmartFileSystem $fileSystem) |
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{ |
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} |
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public function name(): string |
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{ |
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return $this->name->value(); |
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} |
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/** |
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* It returns the contents of a `png` class diagram |
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*/ |
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public function process(OutputContent $digraphInDotFormat): OutputContent |
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{ |
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$dotFile = $this->fileSystem->tempnam(sys_get_temp_dir(), 'phuml'); |
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$imageFile = $this->fileSystem->tempnam(sys_get_temp_dir(), 'phuml'); |
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$this->fileSystem->dumpFile($dotFile, $digraphInDotFormat->value()); |
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$this->execute($dotFile, $imageFile); |
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$image = $this->fileSystem->readFile($imageFile); |
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$this->fileSystem->remove($dotFile); |
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$this->fileSystem->remove($imageFile); |
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return new OutputContent($image); |
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} |
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/** |
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* @throws ImageGenerationFailure If the Graphviz command failed |
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*/ |
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private function execute(string $inputFile, string $outputFile): void |
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{ |
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$process = new Process([$this->name->command(), '-Tpng', '-o', $outputFile, $inputFile]); |
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$process->run(); |
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if (! $process->isSuccessful()) { |
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throw ImageGenerationFailure::withOutput($process->getErrorOutput()); |
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} |
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} |
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} |
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