1 #ifndef BOOST_ARCHIVE_BINARY_IPRIMITIVE_HPP
2 #define BOOST_ARCHIVE_BINARY_IPRIMITIVE_HPP
3
4 // MS compatible compilers support #pragma once
5 #if defined(_MSC_VER)
6 # pragma once
7 #endif
8
9 #if defined(_MSC_VER)
10 #pragma warning( disable : 4800 )
11 #endif
12
13 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
14 // basic_binary_iprimitive.hpp
15 //
16 // archives stored as native binary - this should be the fastest way
17 // to archive the state of a group of obects. It makes no attempt to
18 // convert to any canonical form.
19
20 // IN GENERAL, ARCHIVES CREATED WITH THIS CLASS WILL NOT BE READABLE
21 // ON PLATFORM APART FROM THE ONE THEY ARE CREATED ON
22
23 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
24 // Use, modification and distribution is subject to the Boost Software
25 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
26 // http://www.boost.org/LICENSE_1_0.txt)
27
28 // See http://www.boost.org for updates, documentation, and revision history.
29
30 #include <iosfwd>
31 #include <boost/assert.hpp>
32 #include <locale>
33 #include <cstring> // std::memcpy
34 #include <cstddef> // std::size_t
35 #include <streambuf> // basic_streambuf
36 #include <string>
37
38 #include <boost/config.hpp>
39 #if defined(BOOST_NO_STDC_NAMESPACE)
40 namespace std{
41 using ::memcpy;
42 using ::size_t;
43 } // namespace std
44 #endif
45
46 #include <boost/cstdint.hpp>
47 #include <boost/serialization/throw_exception.hpp>
48 #include <boost/integer.hpp>
49 #include <boost/integer_traits.hpp>
50
51 //#include <boost/mpl/placeholders.hpp>
52 #include <boost/serialization/is_bitwise_serializable.hpp>
53 #include <boost/serialization/array_wrapper.hpp>
54
55 #include <boost/archive/basic_streambuf_locale_saver.hpp>
56 #include <boost/archive/codecvt_null.hpp>
57 #include <boost/archive/archive_exception.hpp>
58 #include <boost/archive/detail/auto_link_archive.hpp>
59 #include <boost/archive/detail/abi_prefix.hpp> // must be the last header
60
61 namespace boost {
62 namespace archive {
63
64 /////////////////////////////////////////////////////////////////////////////
65 // class binary_iarchive - read serialized objects from a input binary stream
66 template<class Archive, class Elem, class Tr>
67 class BOOST_SYMBOL_VISIBLE basic_binary_iprimitive {
68 #ifndef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
69 friend class load_access;
70 protected:
71 #else
72 public:
73 #endif
74 std::basic_streambuf<Elem, Tr> & m_sb;
75 // return a pointer to the most derived class
This()76 Archive * This(){
77 return static_cast<Archive *>(this);
78 }
79
80 #ifndef BOOST_NO_STD_LOCALE
81 // note order! - if you change this, libstd++ will fail!
82 // a) create new locale with new codecvt facet
83 // b) save current locale
84 // c) change locale to new one
85 // d) use stream buffer
86 // e) change locale back to original
87 // f) destroy new codecvt facet
88 boost::archive::codecvt_null<Elem> codecvt_null_facet;
89 basic_streambuf_locale_saver<Elem, Tr> locale_saver;
90 std::locale archive_locale;
91 #endif
92
93 // main template for serilization of primitive types
94 template<class T>
load(T & t)95 void load(T & t){
96 load_binary(& t, sizeof(T));
97 }
98
99 /////////////////////////////////////////////////////////
100 // fundamental types that need special treatment
101
102 // trap usage of invalid uninitialized boolean
load(bool & t)103 void load(bool & t){
104 load_binary(& t, sizeof(t));
105 int i = t;
106 BOOST_ASSERT(0 == i || 1 == i);
107 (void)i; // warning suppression for release builds.
108 }
109 BOOST_ARCHIVE_OR_WARCHIVE_DECL void
110 load(std::string &s);
111 #ifndef BOOST_NO_STD_WSTRING
112 BOOST_ARCHIVE_OR_WARCHIVE_DECL void
113 load(std::wstring &ws);
114 #endif
115 BOOST_ARCHIVE_OR_WARCHIVE_DECL void
116 load(char * t);
117 BOOST_ARCHIVE_OR_WARCHIVE_DECL void
118 load(wchar_t * t);
119
120 BOOST_ARCHIVE_OR_WARCHIVE_DECL void
121 init();
122 BOOST_ARCHIVE_OR_WARCHIVE_DECL
123 basic_binary_iprimitive(
124 std::basic_streambuf<Elem, Tr> & sb,
125 bool no_codecvt
126 );
127 BOOST_ARCHIVE_OR_WARCHIVE_DECL
128 ~basic_binary_iprimitive();
129 public:
130 // we provide an optimized load for all fundamental types
131 // typedef serialization::is_bitwise_serializable<mpl::_1>
132 // use_array_optimization;
133 struct use_array_optimization {
134 template <class T>
135 #if defined(BOOST_NO_DEPENDENT_NESTED_DERIVATIONS)
136 struct apply {
137 typedef typename boost::serialization::is_bitwise_serializable< T >::type type;
138 };
139 #else
140 struct apply : public boost::serialization::is_bitwise_serializable< T > {};
141 #endif
142 };
143
144 // the optimized load_array dispatches to load_binary
145 template <class ValueType>
load_array(serialization::array_wrapper<ValueType> & a,unsigned int)146 void load_array(serialization::array_wrapper<ValueType>& a, unsigned int)
147 {
148 load_binary(a.address(),a.count()*sizeof(ValueType));
149 }
150
151 void
152 load_binary(void *address, std::size_t count);
153 };
154
155 template<class Archive, class Elem, class Tr>
156 inline void
load_binary(void * address,std::size_t count)157 basic_binary_iprimitive<Archive, Elem, Tr>::load_binary(
158 void *address,
159 std::size_t count
160 ){
161 // note: an optimizer should eliminate the following for char files
162 BOOST_ASSERT(
163 static_cast<std::streamsize>(count / sizeof(Elem))
164 <= boost::integer_traits<std::streamsize>::const_max
165 );
166 std::streamsize s = static_cast<std::streamsize>(count / sizeof(Elem));
167 std::streamsize scount = m_sb.sgetn(
168 static_cast<Elem *>(address),
169 s
170 );
171 if(scount != s)
172 boost::serialization::throw_exception(
173 archive_exception(archive_exception::input_stream_error)
174 );
175 // note: an optimizer should eliminate the following for char files
176 BOOST_ASSERT(count % sizeof(Elem) <= boost::integer_traits<std::streamsize>::const_max);
177 s = static_cast<std::streamsize>(count % sizeof(Elem));
178 if(0 < s){
179 // if(is.fail())
180 // boost::serialization::throw_exception(
181 // archive_exception(archive_exception::stream_error)
182 // );
183 Elem t;
184 scount = m_sb.sgetn(& t, 1);
185 if(scount != 1)
186 boost::serialization::throw_exception(
187 archive_exception(archive_exception::input_stream_error)
188 );
189 std::memcpy(static_cast<char*>(address) + (count - s), &t, static_cast<std::size_t>(s));
190 }
191 }
192
193 } // namespace archive
194 } // namespace boost
195
196 #include <boost/archive/detail/abi_suffix.hpp> // pop pragmas
197
198 #endif // BOOST_ARCHIVE_BINARY_IPRIMITIVE_HPP
199