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<?php |
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/* |
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* This file is part of the `liip/LiipImagineBundle` project. |
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* |
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* (c) https://github.com/liip/LiipImagineBundle/graphs/contributors |
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* |
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* For the full copyright and license information, please view the LICENSE.md |
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* file that was distributed with this source code. |
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*/ |
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namespace Liip\ImagineBundle\DependencyInjection\Compiler; |
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use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface; |
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use Symfony\Component\DependencyInjection\ContainerBuilder; |
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/** |
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* By default, a metadata reader based on the exif php extension is used. |
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* This compiler pass checks if the extension is loaded an switches to a simpler |
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* implementation if not. |
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*/ |
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class MetadataReaderCompilerPass implements CompilerPassInterface |
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{ |
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const METADATA_READER_PARAM = 'liip_imagine.meta_data.reader.class'; |
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const DEFAULT_METADATA_READER_CLASS = 'Imagine\Image\Metadata\DefaultMetadataReader'; |
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const EXIF_METADATA_READER_CLASS = 'Imagine\Image\Metadata\ExifMetadataReader'; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function process(ContainerBuilder $container) |
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{ |
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if (!$this->extExifIsAvailable() && $this->isDefaultMetadataReader($container)) { |
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$container->setParameter(self::METADATA_READER_PARAM, self::DEFAULT_METADATA_READER_CLASS); |
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$this->logMetadataReaderReplaced($container); |
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} |
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} |
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/** |
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* @param ContainerBuilder $container |
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* |
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* @return bool |
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*/ |
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protected function isDefaultMetadataReader(ContainerBuilder $container) |
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{ |
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$currentMetadataReaderParameter = $container->getParameter(self::METADATA_READER_PARAM); |
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return $currentMetadataReaderParameter === self::EXIF_METADATA_READER_CLASS; |
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} |
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/** |
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* @param ContainerBuilder $container |
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*/ |
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protected function logMetadataReaderReplaced(ContainerBuilder $container) |
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{ |
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$compiler = $container->getCompiler(); |
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$formatter = $compiler->getLoggingFormatter(); |
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$message = 'Automatically replaced Imagine ExifMetadataReader with DefaultMetadataReader; '. |
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'you might experience issues with LiipImagineBundle; reason: PHP extension "exif" is missing; solution: '. |
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'for advanced metadata extraction install the PHP extension "exif" or set a custom MetadataReader '. |
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'through the "liip_imagine.meta_data.reader.class" parameter'; |
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$compiler->addLogMessage($formatter->format($this, $message)); |
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} |
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/** |
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* @return bool |
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*/ |
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protected function extExifIsAvailable() |
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{ |
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return extension_loaded('exif'); |
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} |
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} |
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liip /
LiipImagineBundle
