Napkin

#ifndef PSTADE_NAPKIN_TRANSFORM_OUT_HPP
#define PSTADE_NAPKIN_TRANSFORM_OUT_HPP


// PStade.Napkin
//
// Copyright 2006 MB.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)


// Usage:
//
// Functor must return OutputStreamable.


#include "./ostream.hpp"


namespace pstade { namespace napkin {


template< class CharT, class Functor >
struct basic_transform_out
{
	template< class StringOutputable >
	basic_transform_out(Functor fun, StringOutputable& out) :
		m_fun(fun), m_os(out)
	{ }

	void operator<<(const CharT *psz)
	{
		m_os << m_fun(psz);
	}

	Functor functor() const
	{
		return m_fun;
	}

private:
	Functor m_fun;
	basic_ostream<CharT> m_os;
};


template< class Functor >
struct transform_out :
	basic_transform_out<char, Functor>
{
	template< class StringOutputable >
	transform_out(Functor fun, StringOutputable& out) :
		basic_transform_out<char, Functor>(fun, out)
	{ }
};


template< class Functor >
struct transform_wout :
	basic_transform_out<wchar_t, Functor>
{
	template< class WideStringOutputable >
	transform_wout(Functor fun, WideStringOutputable& wout) :
		basic_transform_out<wchar_t, Functor>(fun, wout)
	{ }
};


} } // namespace pstade::napkin


#endif