[Boost-users] [filesystem] basic_path as parameter

Subject: [Boost-users] [filesystem] basic_path as parameter
From: Alexander Lamaison (awl03_at_[hidden])
Date: 2010-03-09 09:36:27

I'd like to use basic_path as a function parameter so that it works 

correctly whether a wide or narrow string is passed.  

 

template<typename T>

void func(basic_path<T> file) { do thing to file }

 

func("myfile");

func(L"myfile");

 

However I can't do this because basic_path has a second Traits template 

parameter which is not itself a template.  So I tried the following 

workaround:

 

template<typename T> struct traits_chooser;

 

template<> struct traits_chooser<char*>

{

    typedef boost::filesystem::path_traits traits;

};

 

template<> struct traits_chooser<wchar_t*>

{

    typedef boost::filesystem::wpath_traits traits;

};

 

template<typename T>

void func(basic_path<T, typename traits_chooser<T>::traits> file) {...}

 

But my compiler (MSVC 2005) still can't deduce the parameter type.  Does 

anyone know how I can get this to work?

 

Many thanks.

 

Alex Lamaison