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// boost/filesystem/file_status.hpp --------------------------------------------------// // Copyright Beman Dawes 2002-2009 // Copyright Jan Langer 2002 // Copyright Dietmar Kuehl 2001 // Copyright Vladimir Prus 2002 // Copyright Andrey Semashev 2019 // Distributed under the Boost Software License, Version 1.0. // See http://www.boost.org/LICENSE_1_0.txt // Library home page: http://www.boost.org/libs/filesystem //--------------------------------------------------------------------------------------// #ifndef BOOST_FILESYSTEM3_FILE_STATUS_HPP #define BOOST_FILESYSTEM3_FILE_STATUS_HPP #include <boost/config.hpp> # if defined( BOOST_NO_STD_WSTRING ) # error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support # endif #include <boost/filesystem/config.hpp> #include <boost/detail/bitmask.hpp> #include <boost/config/abi_prefix.hpp> // must be the last #include //--------------------------------------------------------------------------------------// namespace boost { namespace filesystem { //--------------------------------------------------------------------------------------// // file_type // //--------------------------------------------------------------------------------------// enum file_type { status_error, # ifndef BOOST_FILESYSTEM_NO_DEPRECATED status_unknown = status_error, # endif file_not_found, regular_file, directory_file, // the following may not apply to some operating systems or file systems symlink_file, block_file, character_file, fifo_file, socket_file, reparse_file, // Windows: FILE_ATTRIBUTE_REPARSE_POINT that is not a symlink type_unknown, // file does exist, but isn't one of the above types or // we don't have strong enough permission to find its type _detail_directory_symlink // internal use only; never exposed to users }; //--------------------------------------------------------------------------------------// // perms // //--------------------------------------------------------------------------------------// enum perms { no_perms = 0, // file_not_found is no_perms rather than perms_not_known // POSIX equivalent macros given in comments. // Values are from POSIX and are given in octal per the POSIX standard. // permission bits owner_read = 0400, // S_IRUSR, Read permission, owner owner_write = 0200, // S_IWUSR, Write permission, owner owner_exe = 0100, // S_IXUSR, Execute/search permission, owner owner_all = 0700, // S_IRWXU, Read, write, execute/search by owner group_read = 040, // S_IRGRP, Read permission, group group_write = 020, // S_IWGRP, Write permission, group group_exe = 010, // S_IXGRP, Execute/search permission, group group_all = 070, // S_IRWXG, Read, write, execute/search by group others_read = 04, // S_IROTH, Read permission, others others_write = 02, // S_IWOTH, Write permission, others others_exe = 01, // S_IXOTH, Execute/search permission, others others_all = 07, // S_IRWXO, Read, write, execute/search by others all_all = 0777, // owner_all|group_all|others_all // other POSIX bits set_uid_on_exe = 04000, // S_ISUID, Set-user-ID on execution set_gid_on_exe = 02000, // S_ISGID, Set-group-ID on execution sticky_bit = 01000, // S_ISVTX, // (POSIX XSI) On directories, restricted deletion flag // (V7) 'sticky bit': save swapped text even after use // (SunOS) On non-directories: don't cache this file // (SVID-v4.2) On directories: restricted deletion flag // Also see http://en.wikipedia.org/wiki/Sticky_bit perms_mask = 07777, // all_all|set_uid_on_exe|set_gid_on_exe|sticky_bit perms_not_known = 0xFFFF, // present when directory_entry cache not loaded // options for permissions() function add_perms = 0x1000, // adds the given permission bits to the current bits remove_perms = 0x2000, // removes the given permission bits from the current bits; // choose add_perms or remove_perms, not both; if neither add_perms // nor remove_perms is given, replace the current bits with // the given bits. symlink_perms = 0x4000, // on POSIX, don't resolve symlinks; implied on Windows // BOOST_BITMASK op~ casts to int32_least_t, producing invalid enum values _detail_extend_perms_32_1 = 0x7fffffff, _detail_extend_perms_32_2 = -0x7fffffff-1 }; BOOST_BITMASK(perms) //--------------------------------------------------------------------------------------// // file_status // //--------------------------------------------------------------------------------------// class file_status { public: BOOST_CONSTEXPR file_status() BOOST_NOEXCEPT : m_value(status_error), m_perms(perms_not_known) { } explicit BOOST_CONSTEXPR file_status(file_type v) BOOST_NOEXCEPT : m_value(v), m_perms(perms_not_known) { } BOOST_CONSTEXPR file_status(file_type v, perms prms) BOOST_NOEXCEPT : m_value(v), m_perms(prms) { } // As of October 2015 the interaction between noexcept and =default is so troublesome // for VC++, GCC, and probably other compilers, that =default is not used with noexcept // functions. GCC is not even consistent for the same release on different platforms. BOOST_CONSTEXPR file_status(const file_status& rhs) BOOST_NOEXCEPT : m_value(rhs.m_value), m_perms(rhs.m_perms) { } BOOST_CXX14_CONSTEXPR file_status& operator=(const file_status& rhs) BOOST_NOEXCEPT { m_value = rhs.m_value; m_perms = rhs.m_perms; return *this; } # if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) // Note: std::move is not constexpr in C++11, that's why we're not using it here BOOST_CONSTEXPR file_status(file_status&& rhs) BOOST_NOEXCEPT : m_value(static_cast< file_type&& >(rhs.m_value)), m_perms(static_cast< enum perms&& >(rhs.m_perms)) { } BOOST_CXX14_CONSTEXPR file_status& operator=(file_status&& rhs) BOOST_NOEXCEPT { m_value = static_cast< file_type&& >(rhs.m_value); m_perms = static_cast< enum perms&& >(rhs.m_perms); return *this; } # endif // observers BOOST_CONSTEXPR file_type type() const BOOST_NOEXCEPT { return m_value; } BOOST_CONSTEXPR perms permissions() const BOOST_NOEXCEPT { return m_perms; } // modifiers BOOST_CXX14_CONSTEXPR void type(file_type v) BOOST_NOEXCEPT { m_value = v; } BOOST_CXX14_CONSTEXPR void permissions(perms prms) BOOST_NOEXCEPT { m_perms = prms; } BOOST_CONSTEXPR bool operator==(const file_status& rhs) const BOOST_NOEXCEPT { return type() == rhs.type() && permissions() == rhs.permissions(); } BOOST_CONSTEXPR bool operator!=(const file_status& rhs) const BOOST_NOEXCEPT { return !(*this == rhs); } private: file_type m_value; enum perms m_perms; }; inline BOOST_CONSTEXPR bool type_present(file_status f) BOOST_NOEXCEPT { return f.type() != status_error; } inline BOOST_CONSTEXPR bool permissions_present(file_status f) BOOST_NOEXCEPT { return f.permissions() != perms_not_known; } inline BOOST_CONSTEXPR bool status_known(file_status f) BOOST_NOEXCEPT { return filesystem::type_present(f) && filesystem::permissions_present(f); } inline BOOST_CONSTEXPR bool exists(file_status f) BOOST_NOEXCEPT { return f.type() != status_error && f.type() != file_not_found; } inline BOOST_CONSTEXPR bool is_regular_file(file_status f) BOOST_NOEXCEPT { return f.type() == regular_file; } inline BOOST_CONSTEXPR bool is_directory(file_status f) BOOST_NOEXCEPT { return f.type() == directory_file; } inline BOOST_CONSTEXPR bool is_symlink(file_status f) BOOST_NOEXCEPT { return f.type() == symlink_file; } inline BOOST_CONSTEXPR bool is_other(file_status f) BOOST_NOEXCEPT { return filesystem::exists(f) && !filesystem::is_regular_file(f) && !filesystem::is_directory(f) && !filesystem::is_symlink(f); } # ifndef BOOST_FILESYSTEM_NO_DEPRECATED inline bool is_regular(file_status f) BOOST_NOEXCEPT { return filesystem::is_regular_file(f); } # endif } // namespace filesystem } // namespace boost #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas #endif // BOOST_FILESYSTEM3_FILE_STATUS_HPP