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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\Device; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\EpsTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\FontTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\IccColorTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\InteractionTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\OtherTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\OutputSelectionTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\PageTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\RenderingTrait; |
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use GravityMedia\Ghostscript\Device\CommandLineParameters\ResourceTrait; |
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use GravityMedia\Ghostscript\Ghostscript; |
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use GravityMedia\Ghostscript\Process\Argument; |
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use GravityMedia\Ghostscript\Process\Arguments; |
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use Symfony\Component\Process\Process; |
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use Symfony\Component\Process\ProcessBuilder; |
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/** |
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* The abstract device class |
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* |
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* @package GravityMedia\Ghostscript\Devices |
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*/ |
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abstract class AbstractDevice |
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{ |
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/** |
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* Use command line options |
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*/ |
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use CommandLineParametersTrait; |
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/** |
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* Use rendering parameters |
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*/ |
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use RenderingTrait; |
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/** |
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* Use page parameters |
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*/ |
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use PageTrait; |
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/** |
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* Use font-related parameters |
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*/ |
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use FontTrait; |
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/** |
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* Use resource-related parameters |
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*/ |
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use ResourceTrait; |
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/** |
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* Use interaction parameters |
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*/ |
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use InteractionTrait; |
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/** |
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* Use device and output selection parameters |
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*/ |
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use OutputSelectionTrait; |
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/** |
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* Use EPS parameters |
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*/ |
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use EpsTrait; |
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/** |
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* Use ICC color parameters |
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*/ |
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use IccColorTrait; |
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/** |
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* Use other parameters |
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*/ |
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use OtherTrait; |
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/** |
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* PostScript commands to be executed via command line when using this device. |
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*/ |
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const POSTSCRIPT_COMMANDS = ''; |
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/** |
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* The Ghostscript object |
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* |
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* @var Ghostscript |
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*/ |
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protected $ghostscript; |
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/** |
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* The arguments object |
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* |
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* @var Arguments |
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*/ |
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private $arguments; |
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/** |
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* List of input files |
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* |
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* @var array |
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*/ |
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private $inputFiles = []; |
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/** |
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* Whether to read input from stdin |
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* |
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* @var bool |
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*/ |
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private $inputStdin = false; |
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/** |
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* Create abstract device object |
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* |
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* @param Ghostscript $ghostscript |
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* @param Arguments $arguments |
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*/ |
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public function __construct(Ghostscript $ghostscript, Arguments $arguments) |
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{ |
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$this->ghostscript = $ghostscript; |
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$this->arguments = $arguments; |
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} |
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/** |
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* Get Argument |
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* |
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* @param string $name |
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* |
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* @return null|Argument |
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*/ |
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protected function getArgument($name) |
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{ |
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return $this->arguments->getArgument($name); |
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} |
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/** |
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* Whether argument is set |
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* |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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protected function hasArgument($name) |
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{ |
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return $this->getArgument($name) !== null; |
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} |
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/** |
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* Get argument value |
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* |
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* @param string $name |
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* |
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* @return null|string |
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*/ |
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protected function getArgumentValue($name) |
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{ |
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$argument = $this->getArgument($name); |
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if (null === $argument) { |
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return null; |
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} |
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return $argument->getValue(); |
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} |
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/** |
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* Set argument |
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* |
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* @param string $argument |
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* |
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* @return $this |
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*/ |
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protected function setArgument($argument) |
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{ |
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$this->arguments->setArgument($argument); |
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return $this; |
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} |
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/** |
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* Set a generic command line parameter with a string value |
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* |
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* @param string $param the parameter name |
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* @param string $value the parameter value |
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* |
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* @return $this |
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*/ |
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public function setStringParameter($param, $value) |
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{ |
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$this->setArgument(sprintf('-s%s=%s', $param, $value)); |
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return $this; |
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} |
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/** |
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* Set a generic command line parameter with a token value |
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* @param string $param the parameter name |
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* @param mixed $value the parameter value |
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* |
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* @return $this |
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*/ |
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public function setTokenParameter($param, $value) |
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{ |
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$this->setArgument(sprintf('-d%s=%s', $param, $value)); |
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return $this; |
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} |
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/** |
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* Add an input file |
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* |
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* @param string $inputFile a path to an existing file |
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* |
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* @throws \RuntimeException if $inputFile does not exist |
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* |
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* @return $this |
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*/ |
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public function addInputFile($inputFile) |
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{ |
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if (!is_file($inputFile)) { |
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throw new \RuntimeException('Input file does not exist'); |
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} |
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$this->inputFiles[] = $inputFile; |
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return $this; |
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} |
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/** |
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* Add an stdin as input file |
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* |
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* @return $this |
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*/ |
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public function addInputStdin() |
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{ |
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$this->inputStdin = true; |
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return $this; |
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} |
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/** |
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* Create process object |
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* @param string $inputFile either a path to an existing file or a dash (-) to read input from stdin |
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* |
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* @throws \RuntimeException if $inputFile does not exist |
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* |
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* @return Process |
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*/ |
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public function createProcess($inputFile = null) |
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{ |
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if ('-' == $inputFile) { |
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$this->addInputStdin(); |
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} elseif (null !== $inputFile) { |
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$this->addInputFile($inputFile); |
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} |
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$arguments = array_values($this->arguments->toArray()); |
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array_push($arguments, '-c', static::POSTSCRIPT_COMMANDS, '-f'); |
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if (count($this->inputFiles)) { |
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$arguments = array_merge($arguments, $this->inputFiles); |
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} |
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if ($this->inputStdin) { |
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array_push($arguments, '-'); |
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} |
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$this->resetInput(); |
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$processBuilder = new ProcessBuilder($arguments); |
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$processBuilder->setPrefix($this->ghostscript->getOption('bin', Ghostscript::DEFAULT_BINARY)); |
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$processBuilder->addEnvironmentVariables($this->ghostscript->getOption('env', [])); |
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$processBuilder->setTimeout($this->ghostscript->getOption('timeout', 60)); |
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return $processBuilder->getProcess(); |
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} |
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/** |
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* Reset the input-related fields of this device. |
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* Future processes created from this device will have their own input parameters. |
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*/ |
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private function resetInput() |
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{ |
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$this->inputFiles = []; |
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$this->inputStdin = false; |
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} |
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} |
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