[Boost-users] [property_tree] utf8 and others

Hi, I'm playing with new boost library property_tree. And I have several questions regarding it. 1) Suppose there is xml file with utf8 encoding. What is the best way to populate it into wptree? 2) How can I save wptree into xml file with utf8 encoding. Unfortunately write_xml requires wostream. 3) Is there something like map operator[]? I.e. I need the following behavior: wptree & something(some_path) { boost::optional<wptree &> child = my_tree.get_child(some_path); if(child) return child.get(); else return my_tree.put_child(some_path); } Best Regards, Sergei