function iss_preprocess_image in Image Style Selector 7.2

Implements hook_preprocess_image().

File

./iss.module, line 217

Code

function iss_preprocess_image(&$vars) {
  if (variable_get('iss_apply_method', 'default') == 'preprocess_images' && isset($vars['style_name'])) {

    // TODO: How to handle another stream wrappers?

    //$wrappers = file_get_stream_wrappers();

    //foreach ($wrappers as $wrapper_name => $wrapper_info) {

    //  $wrapper_path = file_stream_wrapper_get_instance_by_scheme($wrapper_name)->getDirectoryPath();

    //}

    // For now we only handling public schema.
    $old_style = $vars['style_name'];
    $schema = 'public';
    $old_style_part = "/styles/{$vars['style_name']}/{$schema}/";
    $url_parsed = drupal_parse_url($vars['path']);
    $path_array = explode($old_style_part, $url_parsed['path']);
    if (isset($path_array[1])) {
      $original_image_uri = "{$schema}://" . $path_array[1];
      $new_style = db_query('SELECT iss.target_style FROM iss_styles iss LEFT JOIN file_managed fm ON fm.fid = iss.fid WHERE fm.uri = :uri AND iss.source_style = :style', array(
        ':style' => $old_style,
        ':uri' => $original_image_uri,
      ))
        ->fetchField();
      if ($new_style) {
        $vars['iss_source_style_name'] = $old_style;
        $vars['style_name'] = $new_style;
        $new_style_path = image_style_url($new_style, $original_image_uri);
        $vars['path'] = $new_style_path;
      }
    }
  }
}