function _cdn_build_css_cache in CDN 6.2

Same name and namespace in other branches

1. 7.2 cdn.basic.css.inc \_cdn_build_css_cache()

1 call to _cdn_build_css_cache()

_cdn_css_aggregate in ./cdn.basic.css.inc

Mostly based on drupal_get_css().

File

./cdn.basic.css.inc, line 95

Overrides of Drupal's CSS aggregation system. Ensures that files referenced by CSS files are also served from the CDN, according to the CDN module's CSS aggregation rules.

Code

function _cdn_build_css_cache($types, $filename) {
  $data = '';

  // Create the css/ within the files folder.
  $csspath = file_create_path('css');
  file_check_directory($csspath, FILE_CREATE_DIRECTORY);
  if (!file_exists($csspath . '/' . $filename)) {

    // Build aggregate CSS file.
    foreach ($types as $type) {
      foreach ($type as $file => $cache) {
        if ($cache) {
          $contents = drupal_load_stylesheet($file, TRUE);

          // Return the Drupal path to where this CSS file originated from.
          $base = dirname($file) . '/';
          _cdn_build_css_path(NULL, $base);

          // Prefix all paths within this CSS file, ignoring external and absolute paths.
          $data .= preg_replace_callback('/url\\([\'"]?(?![a-z]+:|\\/+)([^\'")]+)[\'"]?\\)/i', '_cdn_build_css_path', $contents);
        }
      }
    }

    // Per the W3C specification at http://www.w3.org/TR/REC-CSS2/cascade.html#at-import,
    // @import rules must proceed any other style, so we move those to the top.
    $regexp = '/@import[^;]+;/i';
    preg_match_all($regexp, $data, $matches);
    $data = preg_replace($regexp, '', $data);
    $data = implode('', $matches[0]) . $data;

    // Create the CSS file.
    file_save_data($data, $csspath . '/' . $filename, FILE_EXISTS_REPLACE);
  }
  return $csspath . '/' . $filename;
}