ceph/src/boost/boost/filesystem/fstream.hpp

   1 //  boost/filesystem/fstream.hpp  ------------------------------------------------------//
   2
   3 //  Copyright Beman Dawes 2002
   4
   5 //  Distributed under the Boost Software License, Version 1.0.
   6 //  See http://www.boost.org/LICENSE_1_0.txt
   7
   8 //  Library home page: http://www.boost.org/libs/filesystem
   9
  10 //--------------------------------------------------------------------------------------//
  11
  12 #ifndef BOOST_FILESYSTEM3_FSTREAM_HPP
  13 #define BOOST_FILESYSTEM3_FSTREAM_HPP
  14
  15 #include <boost/config.hpp>
  16
  17 # if defined( BOOST_NO_STD_WSTRING )
  18 #   error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support
  19 # endif
  20
  21 #include <boost/filesystem/path.hpp>
  22 #include <iosfwd>
  23 #include <fstream>
  24
  25 #include <boost/config/abi_prefix.hpp> // must be the last #include
  26
  27 //  on Windows, except for standard libaries known to have wchar_t overloads for
  28 //  file stream I/O, use path::string() to get a narrow character c_str()
  29 #if defined(BOOST_WINDOWS_API) \
  30   && (!defined(_CPPLIB_VER) || _CPPLIB_VER < 405 || defined(_STLPORT_VERSION))
  31   // !Dinkumware || early Dinkumware || STLPort masquerading as Dinkumware
  32 # define BOOST_FILESYSTEM_C_STR string().c_str()  // use narrow, since wide not available
  33 #else  // use the native c_str, which will be narrow on POSIX, wide on Windows
  34 # define BOOST_FILESYSTEM_C_STR c_str()
  35 #endif
  36
  37 namespace boost
  38 {
  39 namespace filesystem
  40 {
  41
  42 //--------------------------------------------------------------------------------------//
  43 //                                  basic_filebuf                                       //
  44 //--------------------------------------------------------------------------------------//
  45
  46   template < class charT, class traits = std::char_traits<charT> >
  47   class basic_filebuf : public std::basic_filebuf<charT,traits>
  48   {
  49   private: // disallow copying
  50     basic_filebuf(const basic_filebuf&);
  51     const basic_filebuf& operator=(const basic_filebuf&);
  52
  53   public:
  54     basic_filebuf() {}
  55     virtual ~basic_filebuf() {}
  56
  57     basic_filebuf<charT,traits>*
  58       open(const path& p, std::ios_base::openmode mode)
  59     {
  60       return std::basic_filebuf<charT,traits>::open(p.BOOST_FILESYSTEM_C_STR, mode)
  61         ? this : 0;
  62     }
  63   };
  64
  65 //--------------------------------------------------------------------------------------//
  66 //                                 basic_ifstream                                       //
  67 //--------------------------------------------------------------------------------------//
  68
  69   template < class charT, class traits = std::char_traits<charT> >
  70   class basic_ifstream : public std::basic_ifstream<charT,traits>
  71   {
  72   private: // disallow copying
  73     basic_ifstream(const basic_ifstream&);
  74     const basic_ifstream& operator=(const basic_ifstream&);
  75
  76   public:
  77     basic_ifstream() {}
  78
  79     // use two signatures, rather than one signature with default second
  80     // argument, to workaround VC++ 7.1 bug (ID VSWhidbey 38416)
  81
  82     explicit basic_ifstream(const path& p)
  83       : std::basic_ifstream<charT,traits>(p.BOOST_FILESYSTEM_C_STR, std::ios_base::in) {}
  84
  85     basic_ifstream(const path& p, std::ios_base::openmode mode)
  86       : std::basic_ifstream<charT,traits>(p.BOOST_FILESYSTEM_C_STR, mode) {}
  87
  88     void open(const path& p)
  89       { std::basic_ifstream<charT,traits>::open(p.BOOST_FILESYSTEM_C_STR, std::ios_base::in); }
  90
  91     void open(const path& p, std::ios_base::openmode mode)
  92       { std::basic_ifstream<charT,traits>::open(p.BOOST_FILESYSTEM_C_STR, mode); }
  93
  94     virtual ~basic_ifstream() {}
  95   };
  96
  97 //--------------------------------------------------------------------------------------//
  98 //                                 basic_ofstream                                       //
  99 //--------------------------------------------------------------------------------------//
 100
 101   template < class charT, class traits = std::char_traits<charT> >
 102   class basic_ofstream : public std::basic_ofstream<charT,traits>
 103   {
 104   private: // disallow copying
 105     basic_ofstream(const basic_ofstream&);
 106     const basic_ofstream& operator=(const basic_ofstream&);
 107
 108   public:
 109     basic_ofstream() {}
 110
 111     // use two signatures, rather than one signature with default second
 112     // argument, to workaround VC++ 7.1 bug (ID VSWhidbey 38416)
 113
 114     explicit basic_ofstream(const path& p)
 115       : std::basic_ofstream<charT,traits>(p.BOOST_FILESYSTEM_C_STR, std::ios_base::out) {}
 116
 117     basic_ofstream(const path& p, std::ios_base::openmode mode)
 118       : std::basic_ofstream<charT,traits>(p.BOOST_FILESYSTEM_C_STR, mode) {}
 119
 120     void open(const path& p)
 121       { std::basic_ofstream<charT,traits>::open(p.BOOST_FILESYSTEM_C_STR, std::ios_base::out); }
 122
 123     void open(const path& p, std::ios_base::openmode mode)
 124       { std::basic_ofstream<charT,traits>::open(p.BOOST_FILESYSTEM_C_STR, mode); }
 125
 126     virtual ~basic_ofstream() {}
 127   };
 128
 129 //--------------------------------------------------------------------------------------//
 130 //                                  basic_fstream                                       //
 131 //--------------------------------------------------------------------------------------//
 132
 133   template < class charT, class traits = std::char_traits<charT> >
 134   class basic_fstream : public std::basic_fstream<charT,traits>
 135   {
 136   private: // disallow copying
 137     basic_fstream(const basic_fstream&);
 138     const basic_fstream & operator=(const basic_fstream&);
 139
 140   public:
 141     basic_fstream() {}
 142
 143     // use two signatures, rather than one signature with default second
 144     // argument, to workaround VC++ 7.1 bug (ID VSWhidbey 38416)
 145
 146     explicit basic_fstream(const path& p)
 147       : std::basic_fstream<charT,traits>(p.BOOST_FILESYSTEM_C_STR,
 148           std::ios_base::in | std::ios_base::out) {}
 149
 150     basic_fstream(const path& p, std::ios_base::openmode mode)
 151       : std::basic_fstream<charT,traits>(p.BOOST_FILESYSTEM_C_STR, mode) {}
 152
 153     void open(const path& p)
 154       { std::basic_fstream<charT,traits>::open(p.BOOST_FILESYSTEM_C_STR,
 155           std::ios_base::in | std::ios_base::out); }
 156
 157     void open(const path& p, std::ios_base::openmode mode)
 158       { std::basic_fstream<charT,traits>::open(p.BOOST_FILESYSTEM_C_STR, mode); }
 159
 160     virtual ~basic_fstream() {}
 161
 162   };
 163
 164 //--------------------------------------------------------------------------------------//
 165 //                                    typedefs                                          //
 166 //--------------------------------------------------------------------------------------//
 167
 168   typedef basic_filebuf<char> filebuf;
 169   typedef basic_ifstream<char> ifstream;
 170   typedef basic_ofstream<char> ofstream;
 171   typedef basic_fstream<char> fstream;
 172
 173   typedef basic_filebuf<wchar_t> wfilebuf;
 174   typedef basic_ifstream<wchar_t> wifstream;
 175   typedef basic_ofstream<wchar_t> wofstream;
 176   typedef basic_fstream<wchar_t> wfstream;
 177
 178 } // namespace filesystem
 179 } // namespace boost
 180
 181 #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas
 182 #endif  // BOOST_FILESYSTEM3_FSTREAM_HPP