1 /* 2 * Defines the class template boost::iostreams::detail::filter_adapter, 3 * a convenience base class for filter adapters. 4 * 5 * File: boost/iostreams/detail/adapter/filter_adapter.hpp 6 * Date: Mon Nov 26 14:35:48 MST 2007 7 * Copyright: 2007-2008 CodeRage, LLC 8 * Author: Jonathan Turkanis 9 * Contact: turkanis at coderage dot com 10 * 11 * Distributed under the Boost Software License, Version 1.0.(See accompanying 12 * file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) 13 * 14 * See http://www.boost.org/libs/iostreams for documentation. 15 */ 16 17 #ifndef BOOST_IOSTREAMS_DETAIL_FILTER_ADAPTER_HPP_INCLUDED 18 #define BOOST_IOSTREAMS_DETAIL_FILTER_ADAPTER_HPP_INCLUDED 19 20 #include <boost/iostreams/categories.hpp> 21 #include <boost/iostreams/detail/call_traits.hpp> 22 #include <boost/iostreams/detail/ios.hpp> 23 #include <boost/iostreams/operations.hpp> 24 #include <boost/iostreams/traits.hpp> 25 #include <boost/static_assert.hpp> 26 27 namespace boost { namespace iostreams { namespace detail { 28 29 template<typename T> 30 class filter_adapter { 31 private: 32 typedef typename detail::value_type<T>::type value_type; 33 typedef typename detail::param_type<T>::type param_type; 34 public: filter_adapter(param_type t)35 explicit filter_adapter(param_type t) : t_(t) { } component()36 T& component() { return t_; } 37 38 template<typename Device> close(Device & dev)39 void close(Device& dev) 40 { 41 detail::close_all(t_, dev); 42 } 43 44 template<typename Device> close(Device & dev,BOOST_IOS::openmode which)45 void close(Device& dev, BOOST_IOS::openmode which) 46 { 47 iostreams::close(t_, dev, which); 48 } 49 50 template<typename Device> flush(Device & dev)51 void flush(Device& dev) 52 { 53 return iostreams::flush(t_, dev); 54 } 55 56 template<typename Locale> // Avoid dependency on <locale> imbue(const Locale & loc)57 void imbue(const Locale& loc) { iostreams::imbue(t_, loc); } 58 optimal_buffer_size() const59 std::streamsize optimal_buffer_size() const 60 { return iostreams::optimal_buffer_size(t_); } 61 public: 62 value_type t_; 63 }; 64 65 //----------------------------------------------------------------------------// 66 67 } } } // End namespaces detail, iostreams, boost. 68 69 #endif // #ifndef BOOST_IOSTREAMS_DETAIL_FILTER_ADAPTER_HPP_INCLUDED 70