function responsive_image_get_mime_type

Determines the MIME type of an image.

Parameters

string $image_style_name: The image style that will be applied to the image.

string $extension: The original extension of the image (without the leading dot).

Return value

string The MIME type of the image after the image style is applied.

File

core/modules/responsive_image/responsive_image.module, line 469

Code

function responsive_image_get_mime_type($image_style_name, $extension) {
    if ($image_style_name == ResponsiveImageStyleInterface::EMPTY_IMAGE) {
        return 'image/gif';
    }
    // The MIME type guesser needs a full path, not just an extension, but the
    // file doesn't have to exist.
    if ($image_style_name === ResponsiveImageStyleInterface::ORIGINAL_IMAGE) {
        $fake_path = 'responsive_image.' . $extension;
    }
    else {
        $fake_path = 'responsive_image.' . ImageStyle::load($image_style_name)->getDerivativeExtension($extension);
    }
    $guesser = \Drupal::service('file.mime_type.guesser.extension');
    if (!$guesser instanceof MimeTypeGuesserInterface) {
        @trigger_error('\\Symfony\\Component\\HttpFoundation\\File\\MimeType\\MimeTypeGuesserInterface is deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Implement \\Symfony\\Component\\Mime\\MimeTypeGuesserInterface instead. See https://www.drupal.org/node/3133341', E_USER_DEPRECATED);
        return $guesser->guess($fake_path);
    }
    return $guesser->guessMimeType($fake_path);
}