[Boost-users] boost::filesystem - replace_extension question

Subject: [Boost-users] boost::filesystem - replace_extension question
From: Archie14 (admin_at_[hidden])
Date: 2011-04-20 14:18:52

I am constructing full path out of directory (c:\temp), filename(test) and 
extension (txt).

boost::filesystem::path mypath(dir); // mypath="c:\temp"
mypath /= filename;                  // mypath="c:\temp\test"

If I call mypath.replace_extension("txt") it will fail because there is no dot 
character yet. To proceed further I have to add "." using direct string 
manipulation, that kind of break the logic of using filesystem::path.

Question: how to construct full path using directory, filename and extension 
strings using only filesystem::path methods?