+ /**
+ * Fixes bracket characters in URL handling
+ */
+ public static function parse_url_brackets(&$url)
+ {
+ // #1487672: special handling of square brackets,
+ // URL regexp allows [] characters in URL, for example:
+ // "http://example.com/?a[b]=c". However we need to handle
+ // properly situation when a bracket is placed at the end
+ // of the link e.g. "[http://example.com]"
+ if (preg_match('/(\\[|\\])/', $url)) {
+ $in = false;
+ for ($i=0, $len=strlen($url); $i<$len; $i++) {
+ if ($url[$i] == '[') {
+ if ($in)
+ break;
+ $in = true;
+ }
+ else if ($url[$i] == ']') {
+ if (!$in)
+ break;
+ $in = false;
+ }
+ }
+
+ if ($i<$len) {
+ $suffix = substr($url, $i);
+ $url = substr($url, 0, $i);
+ }
+ }
+
+ return $suffix;
+ }
+
+}