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1 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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2 // basic_binary_oprimitive.ipp:
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3
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4 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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5 // Use, modification and distribution is subject to the Boost Software
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6 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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7 // http://www.boost.org/LICENSE_1_0.txt)
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8
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9 // See http://www.boost.org for updates, documentation, and revision history.
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10
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11 #include <ostream>
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12 #include <cstddef> // NULL
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13 #include <cstring>
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14
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15 #include <boost/config.hpp>
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16
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17 #if defined(BOOST_NO_STDC_NAMESPACE) && ! defined(__LIBCOMO__)
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18 namespace std{
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19 using ::strlen;
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20 } // namespace std
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21 #endif
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22
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23 #ifndef BOOST_NO_CWCHAR
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24 #include <cwchar>
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25 #ifdef BOOST_NO_STDC_NAMESPACE
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26 namespace std{ using ::wcslen; }
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27 #endif
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28 #endif
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29
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30 #include <boost/detail/workaround.hpp>
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31
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32 #include <boost/archive/add_facet.hpp>
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33 #include <boost/archive/codecvt_null.hpp>
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34
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35 namespace boost {
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36 namespace archive {
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37
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38 //////////////////////////////////////////////////////////////////////
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39 // implementation of basic_binary_oprimitive
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40
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41 template<class Archive, class Elem, class Tr>
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42 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
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43 basic_binary_oprimitive<Archive, Elem, Tr>::init()
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44 {
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45 // record native sizes of fundamental types
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46 // this is to permit detection of attempts to pass
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47 // native binary archives accross incompatible machines.
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48 // This is not foolproof but its better than nothing.
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49 this->This()->save(static_cast<unsigned char>(sizeof(int)));
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50 this->This()->save(static_cast<unsigned char>(sizeof(long)));
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51 this->This()->save(static_cast<unsigned char>(sizeof(float)));
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52 this->This()->save(static_cast<unsigned char>(sizeof(double)));
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53 // for checking endianness
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54 this->This()->save(int(1));
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55 }
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56
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57 template<class Archive, class Elem, class Tr>
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58 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
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59 basic_binary_oprimitive<Archive, Elem, Tr>::save(const char * s)
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60 {
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61 std::size_t l = std::strlen(s);
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62 this->This()->save(l);
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63 save_binary(s, l);
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64 }
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65
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66 template<class Archive, class Elem, class Tr>
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67 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
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68 basic_binary_oprimitive<Archive, Elem, Tr>::save(const std::string &s)
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69 {
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70 std::size_t l = static_cast<std::size_t>(s.size());
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71 this->This()->save(l);
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72 save_binary(s.data(), l);
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73 }
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74
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75 #ifndef BOOST_NO_CWCHAR
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76 template<class Archive, class Elem, class Tr>
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77 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
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78 basic_binary_oprimitive<Archive, Elem, Tr>::save(const wchar_t * ws)
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79 {
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80 std::size_t l = std::wcslen(ws);
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81 this->This()->save(l);
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82 save_binary(ws, l * sizeof(wchar_t) / sizeof(char));
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83 }
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84 #endif
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85
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86 #ifndef BOOST_NO_STD_WSTRING
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87 template<class Archive, class Elem, class Tr>
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88 BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
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89 basic_binary_oprimitive<Archive, Elem, Tr>::save(const std::wstring &ws)
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90 {
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91 std::size_t l = ws.size();
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92 this->This()->save(l);
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93 save_binary(ws.data(), l * sizeof(wchar_t) / sizeof(char));
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94 }
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95 #endif
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96
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97 template<class Archive, class Elem, class Tr>
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98 BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
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99 basic_binary_oprimitive<Archive, Elem, Tr>::basic_binary_oprimitive(
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100 std::basic_streambuf<Elem, Tr> & sb,
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101 bool no_codecvt
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102 ) :
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103 #ifndef BOOST_NO_STD_LOCALE
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104 m_sb(sb),
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105 archive_locale(NULL),
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106 locale_saver(m_sb)
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107 {
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108 if(! no_codecvt){
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109 archive_locale.reset(
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110 add_facet(
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111 std::locale::classic(),
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112 new codecvt_null<Elem>
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113 )
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114 );
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115 m_sb.pubimbue(* archive_locale);
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116 }
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117 }
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118 #else
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119 m_sb(sb)
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120 {}
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121 #endif
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122
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123 // some libraries including stl and libcomo fail if the
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124 // buffer isn't flushed before the code_cvt facet is changed.
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125 // I think this is a bug. We explicity invoke sync to when
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126 // we're done with the streambuf to work around this problem.
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127 // Note that sync is a protected member of stream buff so we
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128 // have to invoke it through a contrived derived class.
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129 namespace detail {
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130 // note: use "using" to get past msvc bug
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131 using namespace std;
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132 template<class Elem, class Tr>
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133 class output_streambuf_access : public std::basic_streambuf<Elem, Tr> {
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134 public:
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135 virtual int sync(){
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136 #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206))
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137 return this->basic_streambuf::sync();
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138 #else
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139 return this->basic_streambuf<Elem, Tr>::sync();
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140 #endif
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141 }
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142 };
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143 } // detail
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144
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145 // scoped_ptr requires that g be a complete type at time of
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146 // destruction so define destructor here rather than in the header
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147 template<class Archive, class Elem, class Tr>
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148 BOOST_ARCHIVE_OR_WARCHIVE_DECL(BOOST_PP_EMPTY())
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149 basic_binary_oprimitive<Archive, Elem, Tr>::~basic_binary_oprimitive(){
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150 // flush buffer
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151 //destructor can't throw
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152 try{
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153 static_cast<detail::output_streambuf_access<Elem, Tr> &>(m_sb).sync();
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154 }
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155 catch(...){
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156 }
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157 }
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158
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159 } // namespace archive
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160 } // namespace boost
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