protected function TranslateCss::translateCallback in Advanced CSS/JS Aggregation 8.3

Same name and namespace in other branches

1. 8.4 advagg_mod/src/Asset/TranslateCss.php \Drupal\advagg_mod\Asset\TranslateCss::translateCallback()

Run preg matches through the t() function.

Parameters

array $matches: Array of matches from preg_replace_callback().

Return value

string Replaced string.

File

advagg_mod/src/Asset/TranslateCss.php, line 56

Class

TranslateCss

Applies the t() function to strings in CSS assets.

Namespace

Drupal\advagg_mod\Asset

Code

protected function translateCallback(array $matches) {

  // Skip if equal to ; or }.
  if ($matches[1] === ';' || $matches[1] === '}') {
    return $matches[0];
  }

  // Remove quotes for t function.
  $before = substr($matches[1], 1, -1);

  // Only run if it contains A-Za-z.
  if (!preg_match('/[A-Za-z]/', $before)) {
    return $matches[0];
  }

  // Only run if it contains characters other than unicode.
  $css_unicode_pattern = '/\\\\[0-9a-fA-F]{1,6}(?:\\r\\n|[ \\t\\r\\n\\f])?/';
  $unicode_removed = preg_replace($css_unicode_pattern, '', $before);
  if (empty($unicode_removed)) {
    return $matches[0];
  }

  // Run t function and put back into string.
  return str_replace($before, (string) $this
    ->t('@before', [
    '@before' => $before,
  ]), $matches[0]);
}