function _boost_rmdir in Boost 7

Recursive version of rmdir(); use with extreme caution.

Function also checks file age and only removes expired files.

Parameters

$dir: The top-level directory that will be recursively removed.

$flush: Instead of removing expired cached files, remove all files.

2 calls to _boost_rmdir()

boost_cron in ./boost.module

Implements hook_cron(). Performs periodic actions.

boost_flush_caches in ./boost.module

Implements hook_flush_caches(). Deletes all static files.

File

./boost.module, line 1274

Caches generated output as a static file to be served directly from the webserver.

Code

function _boost_rmdir($dir, $flush = TRUE) {
  static $lifetimes = array();
  static $counter = 0;
  if (is_dir($dir) == FALSE) {
    return FALSE;
  }
  if (!boost_in_cache_dir($dir)) {
    return FALSE;
  }

  // Map extensions to cache lifetimes.
  if (empty($lifetimes)) {
    $types = boost_get_storage_types();
    foreach ($types as $title => $content_types) {
      foreach ($content_types as $type => $values) {
        $lifetimes[$values['extension']] = $values['lifetime_max'];
      }
    }

    // Be sure to recreate the htaccess file just in case.
    boost_form_submit_handler();
  }
  $objects = scandir($dir);
  $empty_dir = TRUE;
  foreach ($objects as $object) {
    if ($object === '.' || $object === '..') {
      continue;
    }
    if ($object === '.htaccess') {
      $empty_dir = FALSE;
      continue;
    }
    $file = $dir . '/' . $object;
    if (is_dir($file)) {
      _boost_rmdir($file, $flush);
    }
    elseif ($flush) {
      unlink($file);
      $counter++;
    }
    else {

      // Need to handle gzipped files.
      // Nice if  it supported multi level cache expiration per content type.
      $ext = substr(strrchr($file, '.'), 1);
      $age = boost_file_get_age($file);
      if (isset($lifetimes[$ext]) && $age > $lifetimes[$ext]) {
        unlink($file);
        $counter++;
      }
      else {
        $empty_dir = FALSE;
      }
    }
  }
  if ($empty_dir && is_dir($dir)) {

    // #1138630 @ error suppression used due to rmdir being a race condition.
    @rmdir($dir);
  }
  return $counter;
}