207 lines
7.9 KiB
C++
Executable File
207 lines
7.9 KiB
C++
Executable File
// boost/filesystem/fstream.hpp ------------------------------------------------------//
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// Copyright Beman Dawes 2002
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// Copyright Andrey Semashev 2021
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// Distributed under the Boost Software License, Version 1.0.
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// See http://www.boost.org/LICENSE_1_0.txt
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// Library home page: http://www.boost.org/libs/filesystem
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//--------------------------------------------------------------------------------------//
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#ifndef BOOST_FILESYSTEM_FSTREAM_HPP
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#define BOOST_FILESYSTEM_FSTREAM_HPP
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#include <boost/filesystem/config.hpp>
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#include <boost/filesystem/path.hpp>
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#include <iosfwd>
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#include <fstream>
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#include <boost/filesystem/detail/header.hpp> // must be the last #include
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#if defined(BOOST_WINDOWS_API)
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// On Windows, except for standard libaries known to have wchar_t overloads for
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// file stream I/O, use path::string() to get a narrow character c_str()
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#if (defined(_CPPLIB_VER) && _CPPLIB_VER >= 405 && !defined(_STLPORT_VERSION)) || \
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(defined(_LIBCPP_VERSION) && _LIBCPP_VERSION >= 7000 && defined(_LIBCPP_HAS_OPEN_WITH_WCHAR))
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// Use wide characters directly
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// Note: We don't use C++17 std::filesystem::path as a means to pass wide paths
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// to file streams because of various problems:
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// - std::filesystem is available in gcc 8 but it is broken there (fails to compile path definition
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// on Windows). Compilation errors seem to be fixed since gcc 9.
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// - In gcc 10.2 and clang 8.0.1 on Cygwin64, the path attempts to convert the wide string to narrow
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// and fails in runtime. This may be system locale dependent, and performing character code conversion
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// is against the purpose of using std::filesystem::path anyway.
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// - Other std::filesystem implementations were not tested, so it is not known if they actually work
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// with wide paths.
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#define BOOST_FILESYSTEM_C_STR(p) p.c_str()
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#else
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// Use narrow characters, since wide not available
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#define BOOST_FILESYSTEM_C_STR(p) p.string().c_str()
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#endif
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#endif // defined(BOOST_WINDOWS_API)
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#if !defined(BOOST_FILESYSTEM_C_STR)
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#define BOOST_FILESYSTEM_C_STR(p) p.c_str()
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#endif
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#if defined(BOOST_MSVC)
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#pragma warning(push)
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// 'boost::filesystem::basic_fstream<charT>' : inherits 'std::basic_istream<_Elem,_Traits>::std::basic_istream<_Elem,_Traits>::_Add_vtordisp1' via dominance
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#pragma warning(disable : 4250)
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#endif
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namespace boost {
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namespace filesystem {
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//--------------------------------------------------------------------------------------//
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// basic_filebuf //
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//--------------------------------------------------------------------------------------//
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template< class charT, class traits = std::char_traits< charT > >
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class basic_filebuf :
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public std::basic_filebuf< charT, traits >
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{
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public:
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BOOST_DEFAULTED_FUNCTION(basic_filebuf(), {})
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BOOST_DELETED_FUNCTION(basic_filebuf(basic_filebuf const&))
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BOOST_DELETED_FUNCTION(basic_filebuf const& operator=(basic_filebuf const&))
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public:
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basic_filebuf< charT, traits >* open(path const& p, std::ios_base::openmode mode)
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{
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return std::basic_filebuf< charT, traits >::open(BOOST_FILESYSTEM_C_STR(p), mode) ? this : 0;
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}
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};
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//--------------------------------------------------------------------------------------//
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// basic_ifstream //
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//--------------------------------------------------------------------------------------//
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template< class charT, class traits = std::char_traits< charT > >
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class basic_ifstream :
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public std::basic_ifstream< charT, traits >
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{
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public:
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BOOST_DEFAULTED_FUNCTION(basic_ifstream(), {})
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// use two signatures, rather than one signature with default second
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// argument, to workaround VC++ 7.1 bug (ID VSWhidbey 38416)
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explicit basic_ifstream(path const& p) :
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std::basic_ifstream< charT, traits >(BOOST_FILESYSTEM_C_STR(p), std::ios_base::in) {}
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basic_ifstream(path const& p, std::ios_base::openmode mode) :
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std::basic_ifstream< charT, traits >(BOOST_FILESYSTEM_C_STR(p), mode) {}
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BOOST_DELETED_FUNCTION(basic_ifstream(basic_ifstream const&))
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BOOST_DELETED_FUNCTION(basic_ifstream const& operator=(basic_ifstream const&))
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public:
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void open(path const& p)
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{
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std::basic_ifstream< charT, traits >::open(BOOST_FILESYSTEM_C_STR(p), std::ios_base::in);
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}
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void open(path const& p, std::ios_base::openmode mode)
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{
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std::basic_ifstream< charT, traits >::open(BOOST_FILESYSTEM_C_STR(p), mode);
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}
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};
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//--------------------------------------------------------------------------------------//
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// basic_ofstream //
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//--------------------------------------------------------------------------------------//
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template< class charT, class traits = std::char_traits< charT > >
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class basic_ofstream :
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public std::basic_ofstream< charT, traits >
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{
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public:
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BOOST_DEFAULTED_FUNCTION(basic_ofstream(), {})
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// use two signatures, rather than one signature with default second
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// argument, to workaround VC++ 7.1 bug (ID VSWhidbey 38416)
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explicit basic_ofstream(path const& p) :
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std::basic_ofstream< charT, traits >(BOOST_FILESYSTEM_C_STR(p), std::ios_base::out) {}
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basic_ofstream(path const& p, std::ios_base::openmode mode) :
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std::basic_ofstream< charT, traits >(BOOST_FILESYSTEM_C_STR(p), mode) {}
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BOOST_DELETED_FUNCTION(basic_ofstream(basic_ofstream const&))
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BOOST_DELETED_FUNCTION(basic_ofstream const& operator=(basic_ofstream const&))
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public:
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void open(path const& p)
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{
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std::basic_ofstream< charT, traits >::open(BOOST_FILESYSTEM_C_STR(p), std::ios_base::out);
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}
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void open(path const& p, std::ios_base::openmode mode)
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{
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std::basic_ofstream< charT, traits >::open(BOOST_FILESYSTEM_C_STR(p), mode);
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}
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};
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//--------------------------------------------------------------------------------------//
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// basic_fstream //
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//--------------------------------------------------------------------------------------//
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template< class charT, class traits = std::char_traits< charT > >
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class basic_fstream :
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public std::basic_fstream< charT, traits >
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{
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public:
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BOOST_DEFAULTED_FUNCTION(basic_fstream(), {})
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// use two signatures, rather than one signature with default second
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// argument, to workaround VC++ 7.1 bug (ID VSWhidbey 38416)
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explicit basic_fstream(path const& p) :
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std::basic_fstream< charT, traits >(BOOST_FILESYSTEM_C_STR(p), std::ios_base::in | std::ios_base::out) {}
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basic_fstream(path const& p, std::ios_base::openmode mode) :
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std::basic_fstream< charT, traits >(BOOST_FILESYSTEM_C_STR(p), mode) {}
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BOOST_DELETED_FUNCTION(basic_fstream(basic_fstream const&))
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BOOST_DELETED_FUNCTION(basic_fstream const& operator=(basic_fstream const&))
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public:
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void open(path const& p)
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{
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std::basic_fstream< charT, traits >::open(BOOST_FILESYSTEM_C_STR(p), std::ios_base::in | std::ios_base::out);
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}
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void open(path const& p, std::ios_base::openmode mode)
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{
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std::basic_fstream< charT, traits >::open(BOOST_FILESYSTEM_C_STR(p), mode);
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}
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};
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//--------------------------------------------------------------------------------------//
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// typedefs //
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//--------------------------------------------------------------------------------------//
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typedef basic_filebuf< char > filebuf;
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typedef basic_ifstream< char > ifstream;
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typedef basic_ofstream< char > ofstream;
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typedef basic_fstream< char > fstream;
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typedef basic_filebuf< wchar_t > wfilebuf;
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typedef basic_ifstream< wchar_t > wifstream;
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typedef basic_ofstream< wchar_t > wofstream;
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typedef basic_fstream< wchar_t > wfstream;
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} // namespace filesystem
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} // namespace boost
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#if defined(BOOST_MSVC)
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#pragma warning(pop)
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#endif
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#include <boost/filesystem/detail/footer.hpp>
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#endif // BOOST_FILESYSTEM_FSTREAM_HPP
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