crop.module::crop_file_url_alter()

Complexity

Conditions	7
Paths	8

Size

Total Lines	40
Code Lines	19

Duplication

Lines	0
Ratio	0 %

Importance

Changes

0

<?php
function crop_file_url_alter(&$uri) {
  // Process only files that are stored in "styles" directory.
  if (strpos($uri, PublicStream::basePath() . '/styles/') !== FALSE) {
    // Handle the case of multiple "/styles/" in URI.
    $uri_parts = explode('/styles/', $uri);
    $image_style_part = end($uri_parts);
    // Match image style, schema, file subdirectory and file name.
    preg_match("/(.*?)\/(.*?)\/(.*+)/", $image_style_part, $match);
    // Get the image style ID.
    $image_style = $match[1];
    // Get the file path without query parameter.
    $parsed_uri = parse_url($match[3]);
    // Get the file URI using parsed schema and file path.
    $file_uri = $match[2] . '://' . $parsed_uri['path'];

    /** @var \Drupal\image\Entity\ImageStyle $image_style */
    if (!$image_style = ImageStyle::load($image_style)) {
      return;
    }

    $crop_type = NULL;
    // Find whether matched image style uses "crop_type" effect.
    /* @var  \Drupal\image\ImageEffectInterface $effect */
    foreach ($image_style->getEffects() as $uuid => $effect) {
      $data_effect = $image_style->getEffect($uuid)->getConfiguration()['data'];
      if (isset($data_effect['crop_type'])) {
        $crop_type = $data_effect['crop_type'];
        break;
      }
    }

    // In case the image style uses "crop_type" effect, load the crop entity.
    if ($crop_type && $crop = Crop::findCrop($file_uri, $crop_type)) {
      // Found a crop for this image, append a hash of it to the URL,
      // so that browsers reload the image and CDNs and proxies can be bypassed.
      $shortened_hash = substr(md5(implode($crop->position()) . implode($crop->anchor())), 0, 8);
      $uri .= '&h=' . $shortened_hash;
    }
  }
}