FlushSingleImage.php in Flush Single Image Styles 8        
                          
                  
                        
  
  
  
  
  
File
  src/FlushSingleImage.php
  
    View source  
  <?php
namespace Drupal\flush_single_image;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\File\FileSystemInterface;
class FlushSingleImage implements FlushSingleImageInterface {
  
  protected $entityTypeManager;
  
  protected $fileSystem;
  
  public function __construct(EntityTypeManagerInterface $entity_type_manager, FileSystemInterface $file_system) {
    $this->entityTypeManager = $entity_type_manager;
    $this->fileSystem = $file_system;
  }
  
  public function flush($path) {
    $style_paths = $this
      ->getStylePaths($path);
    foreach ($style_paths as $style_path) {
      $this->fileSystem
        ->unlink($style_path);
    }
    return $style_paths;
  }
  
  public function getStylePaths($path) {
    $path = $this
      ->buildUri($path);
    $styles = $this->entityTypeManager
      ->getStorage('image_style')
      ->loadMultiple();
    $style_paths = [];
    foreach ($styles as $style) {
      $style_path = $style
        ->buildUri($path);
      if (is_file($style_path) && file_exists($style_path)) {
        $style_paths[] = $style_path;
      }
    }
    return $style_paths;
  }
  
  protected function buildUri($path) {
    if (!$this->fileSystem
      ->uriScheme($path)) {
      $path = file_default_scheme() . '://' . preg_replace('/^\\//', '', $path);
    }
    return $path;
  }
}