function _system_theme_data

Helper function to scan and collect theme .info data and their engines.

Return value

An associative array of themes information.

File

modules/system/system.module, line 863

Configuration system that lets administrators modify the workings of the site.

Code

function _system_theme_data() {
  static $themes_info = array();
  if (empty($themes_info)) {

    // Find themes
    $themes = drupal_system_listing('\\.info$', 'themes');

    // Find theme engines
    $engines = drupal_system_listing('\\.engine$', 'themes/engines');
    $defaults = system_theme_default();
    $sub_themes = array();

    // Read info files for each theme
    foreach ($themes as $key => $theme) {
      $themes[$key]->info = drupal_parse_info_file($theme->filename) + $defaults;

      // Invoke hook_system_info_alter() to give installed modules a chance to
      // modify the data in the .info files if necessary.
      drupal_alter('system_info', $themes[$key]->info, $themes[$key]);
      if (!empty($themes[$key]->info['base theme'])) {
        $sub_themes[] = $key;
      }
      if (empty($themes[$key]->info['engine'])) {
        $filename = dirname($themes[$key]->filename) . '/' . $themes[$key]->name . '.theme';
        if (file_exists($filename)) {
          $themes[$key]->owner = $filename;
          $themes[$key]->prefix = $key;
        }
      }
      else {
        $engine = $themes[$key]->info['engine'];
        if (isset($engines[$engine])) {
          $themes[$key]->owner = $engines[$engine]->filename;
          $themes[$key]->prefix = $engines[$engine]->name;
          $themes[$key]->template = TRUE;
        }
      }

      // Give the stylesheets proper path information.
      $pathed_stylesheets = array();
      foreach ($themes[$key]->info['stylesheets'] as $media => $stylesheets) {
        foreach ($stylesheets as $stylesheet) {
          $pathed_stylesheets[$media][$stylesheet] = dirname($themes[$key]->filename) . '/' . $stylesheet;
        }
      }
      $themes[$key]->info['stylesheets'] = $pathed_stylesheets;

      // Give the scripts proper path information.
      $scripts = array();
      foreach ($themes[$key]->info['scripts'] as $script) {
        $scripts[$script] = dirname($themes[$key]->filename) . '/' . $script;
      }
      $themes[$key]->info['scripts'] = $scripts;

      // Give the screenshot proper path information.
      if (!empty($themes[$key]->info['screenshot'])) {
        $themes[$key]->info['screenshot'] = dirname($themes[$key]->filename) . '/' . $themes[$key]->info['screenshot'];
      }
    }

    // Now that we've established all our master themes, go back and fill in
    // data for subthemes.
    foreach ($sub_themes as $key) {
      $themes[$key]->base_themes = system_find_base_themes($themes, $key);

      // Don't proceed if there was a problem with the root base theme.
      if (!current($themes[$key]->base_themes)) {
        continue;
      }
      $base_key = key($themes[$key]->base_themes);
      foreach (array_keys($themes[$key]->base_themes) as $base_theme) {
        $themes[$base_theme]->sub_themes[$key] = $themes[$key]->info['name'];
      }

      // Copy the 'owner' and 'engine' over if the top level theme uses a
      // theme engine.
      if (isset($themes[$base_key]->owner)) {
        if (isset($themes[$base_key]->info['engine'])) {
          $themes[$key]->info['engine'] = $themes[$base_key]->info['engine'];
          $themes[$key]->owner = $themes[$base_key]->owner;
          $themes[$key]->prefix = $themes[$base_key]->prefix;
        }
        else {
          $themes[$key]->prefix = $key;
        }
      }
    }
    $themes_info = $themes;
  }

  // To avoid side effects, we don't return the original objects.
  $themes_info_cloned = array();
  foreach ($themes_info as $key => $theme) {
    $themes_info_cloned[$key] = drupal_clone($theme);
  }
  return $themes_info_cloned;
}