diff options
Diffstat (limited to 'includes/bootstrap.inc')
| -rw-r--r-- | includes/bootstrap.inc | 26 |
1 files changed, 21 insertions, 5 deletions
diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc index 51deb221d..a05a08d74 100644 --- a/includes/bootstrap.inc +++ b/includes/bootstrap.inc @@ -192,6 +192,18 @@ function conf_init() { * theme, etc.). The filename, whether provided, cached, or retrieved * from the database, is only returned if the file exists. * + * This function plays a key role in allowing Drupal's resources (modules + * and themes) to be located in different places depending on a site's + * configuration. For example, a module 'foo' may legally be be located + * in any of these three places: + * + * modules/foo/foo.module + * sites/all/modules/foo/foo.module + * sites/example.com/modules/foo/foo.module + * + * Calling drupal_get_filename('module', 'foo') will give you one of + * the above, depending on where the module is located. + * * @param $type * The type of the item (i.e. theme, theme_engine, module). * @param $name @@ -199,15 +211,13 @@ function conf_init() { * @param $filename * The filename of the item if it is to be set explicitly rather * than by consulting the database. - * @param $check_db - * Allows the database search to be skipped (useful for pre-bootstrap - * checks where configuration paths must still be respected). * * @return * The filename of the requested item. */ -function drupal_get_filename($type, $name, $filename = NULL, $check_db = TRUE) { +function drupal_get_filename($type, $name, $filename = NULL) { static $files = array(); + global $active_db; if (!isset($files[$type])) { $files[$type] = array(); @@ -219,10 +229,16 @@ function drupal_get_filename($type, $name, $filename = NULL, $check_db = TRUE) { elseif (isset($files[$type][$name])) { // nothing } - elseif ($check_db && (($file = db_result(db_query("SELECT filename FROM {system} WHERE name = '%s' AND type = '%s'", $name, $type))) && file_exists($file))) { + // Verify that we have an active database connection, before querying + // the database. This is required because this function is called both + // before we have a database connection (i.e. during installation) and + // when a database connection fails. + elseif ($active_db && (($file = db_result(db_query("SELECT filename FROM {system} WHERE name = '%s' AND type = '%s'", $name, $type))) && file_exists($file))) { $files[$type][$name] = $file; } else { + // Fallback to searching the filesystem if the database connection is + // not established or the requested file is not found. $config = conf_path(); $dir = (($type == 'theme_engine') ? 'themes/engines' : "${type}s"); $file = (($type == 'theme_engine') ? "$name.engine" : "$name.$type"); |