function _cdn_basic_farfuture_parse_raw_mapping in CDN 6.2

Same name and namespace in other branches

1. 7.2 cdn.basic.farfuture.inc \_cdn_basic_farfuture_parse_raw_mapping()

Parse the raw (textual) mapping into a lookup table, where the key is the file extension and the value is a list of CDN URLs that serve the file.

Parameters

$mapping_raw: A raw (textual) mapping.

Return value

The corresponding mapping lookup table.

1 call to _cdn_basic_farfuture_parse_raw_mapping()

cdn_basic_farfuture_get_identifier in ./cdn.basic.farfuture.inc

Get the UFI (Unique File Identifier) for the file at a path.

File

./cdn.basic.farfuture.inc, line 273

Far Future expiration setting for basic mode.

Code

function _cdn_basic_farfuture_parse_raw_mapping($mapping_raw) {
  $mapping = array();
  if (!empty($mapping_raw)) {
    $lines = preg_split("/[\n\r]+/", $mapping_raw, -1, PREG_SPLIT_NO_EMPTY);
    foreach ($lines as $line) {

      // Parse this line. It may or may not limit the CDN URL to a list of
      // file extensions.
      $parts = explode('|', $line);
      $directories = explode(':', $parts[0]);
      $specificity = 0;

      // There may be 2 or 3 parts:
      // - part 1: directories
      // - part 2: file extensions (optional)
      // - part 3: unique file identifier method
      if (count($parts) == 2) {
        $extensions = array(
          '*',
        );

        // Use the asterisk as a wildcard.
        $ufi_method = drupal_strtolower(trim($parts[1]));
      }
      elseif (count($parts) == 3) {

        // Convert to lower case, remove periods, whitespace and split on ' '.
        $extensions = explode(' ', trim(str_replace('.', '', drupal_strtolower($parts[1]))));
        $ufi_method = drupal_strtolower(trim($parts[2]));
      }

      // Create the mapping lookup table.
      foreach ($directories as $directory) {
        $directory_specificity = 10 * count(explode('/', $directory));
        foreach ($extensions as $extension) {
          $extension_specificity = $extension == '*' ? 0 : 1;
          $mapping[$directory][$extension] = array(
            'ufi method' => $ufi_method,
            'specificity' => $directory_specificity + $extension_specificity,
          );
        }
      }
    }
  }
  return $mapping;
}