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<?php |
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/** |
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* This file is part of the Ghostscript package |
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* |
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* @author Daniel Schröder <[email protected]> |
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*/ |
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namespace GravityMedia\Ghostscript; |
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use GravityMedia\Ghostscript\Devices\PdfWrite; |
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use GravityMedia\Ghostscript\Process\Arguments as ProcessArguments; |
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use Symfony\Component\Process\ProcessBuilder; |
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/** |
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* The Ghostscript class |
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* |
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* @package GravityMedia\Ghostscript |
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*/ |
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class Ghostscript |
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{ |
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/** |
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* The default binary |
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*/ |
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const DEFAULT_BINARY = 'gs'; |
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/** |
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* The options |
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* |
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* @var array |
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*/ |
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protected $options; |
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/** |
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* The version |
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* |
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* @var string |
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*/ |
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protected $version; |
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/** |
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* Create Ghostscript object |
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* |
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* @param array $options |
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* |
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* @throws \RuntimeException |
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*/ |
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public function __construct(array $options = []) |
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{ |
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$this->options = $options; |
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if (version_compare('9.00', $this->getVersion()) > 0) { |
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throw new \RuntimeException('Ghostscript version 9.00 or higher is required'); |
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} |
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} |
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/** |
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* Get option |
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* |
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* @param string $name |
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* @param mixed $default |
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* |
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* @return mixed |
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*/ |
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public function getOption($name, $default = null) |
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{ |
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if (array_key_exists($name, $this->options)) { |
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return $this->options[$name]; |
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} |
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return $default; |
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} |
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/** |
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* Create process builder object |
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* @param array $arguments |
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* |
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* @return ProcessBuilder |
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*/ |
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protected function createProcessBuilder(array $arguments = []) |
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{ |
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$processBuilder = new ProcessBuilder($arguments); |
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$processBuilder->setPrefix($this->getOption('bin', self::DEFAULT_BINARY)); |
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$processBuilder->addEnvironmentVariables($this->getOption('env', [])); |
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return $processBuilder; |
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} |
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/** |
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* Get version |
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* |
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* @throws \RuntimeException |
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* |
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* @return string |
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*/ |
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public function getVersion() |
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{ |
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if (null === $this->version) { |
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$process = $this->createProcessBuilder(['--version'])->getProcess(); |
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$process->run(); |
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if (!$process->isSuccessful()) { |
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throw new \RuntimeException($process->getErrorOutput()); |
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} |
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$this->version = $process->getOutput(); |
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} |
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return $this->version; |
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} |
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/** |
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* Create process arguments object |
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* @param array $arguments |
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* |
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* @return ProcessArguments |
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*/ |
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protected function createProcessArguments(array $arguments = []) |
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{ |
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$processArguments = new ProcessArguments(); |
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$processArguments->addArguments($arguments); |
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if ($this->getOption('quiet', true)) { |
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$processArguments->addArgument('-q'); |
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} |
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return $processArguments; |
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} |
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/** |
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* Create PDF device object |
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* |
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* @param null|string $outputFile |
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* |
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* @return PdfWrite |
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*/ |
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3 |
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public function createPdfDevice($outputFile = null) |
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{ |
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$builder = $this->createProcessBuilder(); |
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$arguments = $this->createProcessArguments([ |
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'-dSAFER', |
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'-dBATCH', |
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'-dNOPAUSE' |
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]); |
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$device = new PdfWrite($builder, $arguments); |
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if (null !== $outputFile) { |
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$device->setOutputFile($outputFile); |
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} |
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return $device; |
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} |
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} |
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GravityMedia /
Ghostscript
