+
+ /**
+ * Splits the user's query string up into several keywords
+ * that all have to be within the note (AND).
+ *
+ * Split by space, quotes are supported:
+ * - foo bar
+ * -> searches for notes that contain "foo" and "bar"
+ * - foo "bar baz"
+ * -> searches for notes that contain "foo" and "bar baz"
+ *
+ * @param string $query User-given query string
+ *
+ * @return array Array of keywords
+ */
+ protected function parseQuery($query)
+ {
+ $keywords = explode(' ', $query);
+ array_map('trim', $keywords);
+ $loop = 0;
+ do {
+ $changed = false;
+ foreach ($keywords as $key => &$keyword) {
+ if ($keyword{0} != '"') {
+ continue;
+ }
+ if (substr($keyword, -1) == '"') {
+ // "foo"
+ $keyword = trim($keyword, '"');
+ continue;
+ }
+ if ($key < count($keywords) -1) {
+ //not at the end
+ $keyword .= ' ' . $keywords[$key + 1];
+ unset($keywords[$key + 1]);
+ $changed = true;
+ break;
+ }
+ }
+ } while ($changed && ++$loop < 20);
+
+ return $keywords;
+ }