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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\Device\BoundingBoxInfo; |
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use GravityMedia\Ghostscript\Device\NoDisplay; |
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use GravityMedia\Ghostscript\Device\PdfInfo; |
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use GravityMedia\Ghostscript\Device\PdfWrite; |
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use GravityMedia\Ghostscript\Process\Arguments; |
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use Symfony\Component\Process\Process; |
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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 versions. |
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* |
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* @var string[] |
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*/ |
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protected static $versions = []; |
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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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* 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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* Get process to identify version. |
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* |
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* @param string $binary |
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* |
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* @return Process |
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*/ |
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protected function createProcessToIdentifyVersion($binary) |
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{ |
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return new Process($binary . ' --version'); |
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} |
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/** |
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* Get version. |
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* |
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* @throws \RuntimeException |
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* |
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* @return string |
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*/ |
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public function getVersion() |
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{ |
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$binary = $this->getOption('bin', static::DEFAULT_BINARY); |
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if (!isset(static::$versions[$binary])) { |
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$process = $this->createProcessToIdentifyVersion($binary); |
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$process->run(); |
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if (!$process->isSuccessful()) { |
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throw new \RuntimeException($process->getErrorOutput()); |
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} |
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static::$versions[$binary] = $process->getOutput(); |
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} |
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return static::$versions[$binary]; |
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} |
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/** |
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* Create arguments object. |
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* |
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* @return Arguments |
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*/ |
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protected function createArguments() |
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{ |
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$arguments = new Arguments(); |
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if ($this->getOption('quiet', true)) { |
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$arguments->addArgument('-q'); |
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} |
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return $arguments; |
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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 $outputFile |
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* |
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* @return PdfWrite |
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*/ |
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public function createPdfDevice($outputFile = null) |
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{ |
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$device = new PdfWrite($this, $this->createArguments()); |
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$device |
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->setSafer() |
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->setBatch() |
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->setNoPause(); |
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if (null === $outputFile) { |
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$outputFile = '-'; |
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} |
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$device->setOutputFile($outputFile); |
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return $device; |
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} |
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/** |
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* Create no display device object. |
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* |
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* @return NoDisplay |
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*/ |
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public function createNoDisplayDevice() |
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{ |
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return new NoDisplay($this, $this->createArguments()); |
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} |
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/** |
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* Create PDF info device object. |
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* |
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* @param string $pdfInfoPath Path to toolbin/pdf_info.ps |
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* |
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* @return PdfInfo |
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*/ |
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public function createPdfInfoDevice($pdfInfoPath) |
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{ |
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return new PdfInfo($this, $this->createArguments(), $pdfInfoPath); |
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} |
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/** |
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* Create bounding box info device object. |
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* |
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* @return BoundingBoxInfo |
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*/ |
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public function createBoundingBoxInfoDevice() |
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{ |
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$device = new BoundingBoxInfo($this, $this->createArguments()); |
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$device |
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->setSafer() |
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->setBatch() |
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->setNoPause(); |
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return $device; |
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} |
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} |
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GravityMedia /
Ghostscript
