1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
// (C) Copyright Jonathan Turkanis 2003.
// 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.)
// See http://www.boost.org/libs/iostreams for documentation.
#ifndef BOOST_IOSTREAMS_CLOSE_HPP_INCLUDED
#define BOOST_IOSTREAMS_CLOSE_HPP_INCLUDED
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include <boost/config.hpp> // DEDUCED_TYPENAME, MSVC.
#include <boost/detail/workaround.hpp>
#include <boost/iostreams/categories.hpp>
#include <boost/iostreams/flush.hpp>
#include <boost/iostreams/detail/adapter/non_blocking_adapter.hpp>
#include <boost/iostreams/detail/wrap_unwrap.hpp>
#include <boost/iostreams/operations_fwd.hpp>
#include <boost/iostreams/traits.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/if.hpp>
#include <boost/type_traits/is_convertible.hpp>
// Must come last.
#include <boost/iostreams/detail/config/disable_warnings.hpp>
#if BOOST_WORKAROUND(BOOST_MSVC, < 1300) //-----------------------------------//
# include <boost/iostreams/detail/vc6/close.hpp>
#else // #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) //--------------------------//
namespace boost { namespace iostreams {
namespace detail {
template<typename T>
struct close_impl;
} // End namespace detail.
template<typename T>
void close(T& t, BOOST_IOS::openmode which)
{ detail::close_impl<T>::close(detail::unwrap(t), which); }
template<typename T, typename Sink>
void close(T& t, Sink& snk, BOOST_IOS::openmode which)
{ detail::close_impl<T>::close(detail::unwrap(t), snk, which); }
namespace detail {
//------------------Definition of close_impl----------------------------------//
template<typename T>
struct close_tag {
typedef typename category_of<T>::type category;
typedef typename
mpl::eval_if<
is_convertible<category, closable_tag>,
mpl::if_<
mpl::or_<
is_convertible<category, two_sequence>,
is_convertible<category, dual_use>
>,
two_sequence,
closable_tag
>,
mpl::identity<any_tag>
>::type type;
};
template<typename T>
struct close_impl
: mpl::if_<
is_custom<T>,
operations<T>,
close_impl<BOOST_DEDUCED_TYPENAME close_tag<T>::type>
>::type
{ };
template<>
struct close_impl<any_tag> {
template<typename T>
static void close(T& t, BOOST_IOS::openmode which)
{
if ((which & BOOST_IOS::out) != 0)
iostreams::flush(t);
}
template<typename T, typename Sink>
static void close(T& t, Sink& snk, BOOST_IOS::openmode which)
{
if ((which & BOOST_IOS::out) != 0) {
non_blocking_adapter<Sink> nb(snk);
iostreams::flush(t, nb);
}
}
};
#include <boost/iostreams/detail/config/disable_warnings.hpp> // Borland.
template<>
struct close_impl<closable_tag> {
template<typename T>
static void close(T& t, BOOST_IOS::openmode which)
{
typedef typename category_of<T>::type category;
const bool in = is_convertible<category, input>::value &&
!is_convertible<category, output>::value;
if (in == ((which & BOOST_IOS::in) != 0))
t.close();
}
template<typename T, typename Sink>
static void close(T& t, Sink& snk, BOOST_IOS::openmode which)
{
typedef typename category_of<T>::type category;
const bool in = is_convertible<category, input>::value &&
!is_convertible<category, output>::value;
if (in == ((which & BOOST_IOS::in) != 0)) {
non_blocking_adapter<Sink> nb(snk);
t.close(nb);
}
}
};
template<>
struct close_impl<two_sequence> {
template<typename T>
static void close(T& t, BOOST_IOS::openmode which) { t.close(which); }
template<typename T, typename Sink>
static void close(T& t, Sink& snk, BOOST_IOS::openmode which)
{
non_blocking_adapter<Sink> nb(snk);
t.close(nb, which);
}
};
} // End namespace detail.
} } // End namespaces iostreams, boost.
#endif // #if BOOST_WORKAROUND(BOOST_MSVC, < 1300) //-------------------------//
#include <boost/iostreams/detail/config/enable_warnings.hpp>
#endif // #ifndef BOOST_IOSTREAMS_CLOSE_HPP_INCLUDED
|
