FileUtil.getDotSuffix

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5388 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/util/FileUtil.as

@@ -0,0 +1,38 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.util {
+
+public class FileUtil
+{
+    /**
+     * Returns the substring composed of the characters after the last '.' in the supplied string.
+     * The substring will be converted to lowercase.
+     */
+    public static function getDotSuffix (filename :String) :String
+    {
+        var dotIndex :int = filename.lastIndexOf(".");
+        return (dotIndex >= 0 ? filename.substr(dotIndex + 1).toLowerCase() : "");
+    }
+
+}
+
+}