1 /*
2  * Defines the class template boost::iostreams::detail::device_adapter,
3  * a convenience base class for device adapters.
4  *
5  * File:        boost/iostreams/detail/adapter/filter_adapter.hpp
6  * Date:        Mon Nov 26 14:35:48 MST 2007
7  *
8  * Copyright:   2007-2008 CodeRage, LLC
9  * Author:      Jonathan Turkanis
10  * Contact:     turkanis at coderage dot com
11  *
12  * Distributed under the Boost Software License, Version 1.0.(See accompanying
13  * file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
14  *
15  * See http://www.boost.org/libs/iostreams for documentation.
16  */
17 
18 #ifndef BOOST_IOSTREAMS_DETAIL_DEVICE_ADAPTER_HPP_INCLUDED
19 #define BOOST_IOSTREAMS_DETAIL_DEVICE_ADAPTER_HPP_INCLUDED
20 
21 #include <boost/iostreams/categories.hpp>
22 #include <boost/iostreams/detail/call_traits.hpp>
23 #include <boost/iostreams/detail/ios.hpp>
24 #include <boost/iostreams/operations.hpp>
25 #include <boost/iostreams/traits.hpp>
26 #include <boost/static_assert.hpp>
27 
28 namespace boost { namespace iostreams { namespace detail {
29 
30 template<typename T>
31 class device_adapter {
32 private:
33     typedef typename detail::value_type<T>::type value_type;
34     typedef typename detail::param_type<T>::type param_type;
35 public:
device_adapter(param_type t)36     explicit device_adapter(param_type t) : t_(t) { }
component()37     T& component() { return t_; }
38 
close()39     void close()
40     {
41         detail::close_all(t_);
42     }
43 
close(BOOST_IOS::openmode which)44     void close(BOOST_IOS::openmode which)
45     {
46         iostreams::close(t_, which);
47     }
48 
flush()49     bool flush()
50     {
51         return iostreams::flush(t_);
52     }
53 
54     template<typename Locale> // Avoid dependency on <locale>
imbue(const Locale & loc)55     void imbue(const Locale& loc) { iostreams::imbue(t_, loc); }
56 
optimal_buffer_size() const57     std::streamsize optimal_buffer_size() const
58     { return iostreams::optimal_buffer_size(t_); }
59 public:
60     value_type t_;
61 };
62 
63 //----------------------------------------------------------------------------//
64 
65 } } } // End namespaces detail, iostreams, boost.
66 
67 #endif // #ifndef BOOST_IOSTREAMS_DETAIL_DEVICE_ADAPTER_HPP_INCLUDED
68