//--------------------------------------------------------------------------------------- // // ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14/C++17/C++20 // //--------------------------------------------------------------------------------------- // // Copyright (c) 2018, Steffen Schümann // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in all // copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE // SOFTWARE. // //--------------------------------------------------------------------------------------- // // To dynamically select std::filesystem where available on most platforms, // you could use: // // #if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) || (defined(__cplusplus) && __cplusplus >= 201703L)) && defined(__has_include) // #if __has_include() && (!defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500) // #define GHC_USE_STD_FS // #include // namespace fs = std::filesystem; // #endif // #endif // #ifndef GHC_USE_STD_FS // #include // namespace fs = ghc::filesystem; // #endif // //--------------------------------------------------------------------------------------- #ifndef GHC_FILESYSTEM_H #define GHC_FILESYSTEM_H // #define BSD manifest constant only in // sys/param.h #ifndef _WIN32 #include #endif #ifndef GHC_OS_DETECTED #if defined(__APPLE__) && defined(__MACH__) #define GHC_OS_MACOS #elif defined(__linux__) #define GHC_OS_LINUX #if defined(__ANDROID__) #define GHC_OS_ANDROID #endif #elif defined(_WIN64) #define GHC_OS_WINDOWS #define GHC_OS_WIN64 #elif defined(_WIN32) #define GHC_OS_WINDOWS #define GHC_OS_WIN32 #elif defined(__svr4__) #define GHC_OS_SYS5R4 #elif defined(BSD) #define GHC_OS_BSD #elif defined(__EMSCRIPTEN__) #define GHC_OS_WEB #include #else #error "Operating system currently not supported!" #endif #define GHC_OS_DETECTED #if (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) #if _MSVC_LANG == 201703L #define GHC_FILESYSTEM_RUNNING_CPP17 #else #define GHC_FILESYSTEM_RUNNING_CPP20 #endif #elif (defined(__cplusplus) && __cplusplus >= 201703L) #if __cplusplus == 201703L #define GHC_FILESYSTEM_RUNNING_CPP17 #else #define GHC_FILESYSTEM_RUNNING_CPP20 #endif #endif #endif #if defined(GHC_FILESYSTEM_IMPLEMENTATION) #define GHC_EXPAND_IMPL #define GHC_INLINE #ifdef GHC_OS_WINDOWS #ifndef GHC_FS_API #define GHC_FS_API #endif #ifndef GHC_FS_API_CLASS #define GHC_FS_API_CLASS #endif #else #ifndef GHC_FS_API #define GHC_FS_API __attribute__((visibility("default"))) #endif #ifndef GHC_FS_API_CLASS #define GHC_FS_API_CLASS __attribute__((visibility("default"))) #endif #endif #elif defined(GHC_FILESYSTEM_FWD) #define GHC_INLINE #ifdef GHC_OS_WINDOWS #ifndef GHC_FS_API #define GHC_FS_API extern #endif #ifndef GHC_FS_API_CLASS #define GHC_FS_API_CLASS #endif #else #ifndef GHC_FS_API #define GHC_FS_API extern #endif #ifndef GHC_FS_API_CLASS #define GHC_FS_API_CLASS #endif #endif #else #define GHC_EXPAND_IMPL #define GHC_INLINE inline #ifndef GHC_FS_API #define GHC_FS_API #endif #ifndef GHC_FS_API_CLASS #define GHC_FS_API_CLASS #endif #endif #ifdef GHC_EXPAND_IMPL #ifdef GHC_OS_WINDOWS #include // additional includes #include #include #include #include #include #else #include #include #include #include #include #include #include #include #ifdef GHC_OS_ANDROID #include #if __ANDROID_API__ < 12 #include #endif #include #define statvfs statfs #else #include #endif #if !defined(__ANDROID__) || __ANDROID_API__ >= 26 #include #endif #endif #ifdef GHC_OS_MACOS #include #endif #if defined(__cpp_impl_three_way_comparison) && defined(__has_include) #if __has_include() #define GHC_HAS_THREEWAY_COMP #include #endif #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #else // GHC_EXPAND_IMPL #if defined(__cpp_impl_three_way_comparison) && defined(__has_include) #if __has_include() #define GHC_HAS_THREEWAY_COMP #include #endif #endif #include #include #include #include #include #include #include #ifdef GHC_OS_WINDOWS #include #endif #endif // GHC_EXPAND_IMPL // After standard library includes. // Standard library support for std::string_view. #if defined(__cpp_lib_string_view) #define GHC_HAS_STD_STRING_VIEW #elif defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 4000) && (__cplusplus >= 201402) #define GHC_HAS_STD_STRING_VIEW #elif defined(_GLIBCXX_RELEASE) && (_GLIBCXX_RELEASE >= 7) && (__cplusplus >= 201703) #define GHC_HAS_STD_STRING_VIEW #elif defined(_MSC_VER) && (_MSC_VER >= 1910 && _MSVC_LANG >= 201703) #define GHC_HAS_STD_STRING_VIEW #endif // Standard library support for std::experimental::string_view. #if defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 3700 && _LIBCPP_VERSION < 7000) && (__cplusplus >= 201402) #define GHC_HAS_STD_EXPERIMENTAL_STRING_VIEW #elif defined(__GNUC__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 9)) || (__GNUC__ > 4)) && (__cplusplus >= 201402) #define GHC_HAS_STD_EXPERIMENTAL_STRING_VIEW #endif #if defined(GHC_HAS_STD_STRING_VIEW) #include #elif defined(GHC_HAS_STD_EXPERIMENTAL_STRING_VIEW) #include #endif //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // Behaviour Switches (see README.md, should match the config in test/filesystem_test.cpp): //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // Enforce C++17 API where possible when compiling for C++20, handles the following cases: // * fs::path::u8string() returns std::string instead of std::u8string // #define GHC_FILESYSTEM_ENFORCE_CPP17_API //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // LWG #2682 disables the since then invalid use of the copy option create_symlinks on directories // configure LWG conformance () #define LWG_2682_BEHAVIOUR //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // LWG #2395 makes crate_directory/create_directories not emit an error if there is a regular // file with that name, it is superceded by P1164R1, so only activate if really needed // #define LWG_2935_BEHAVIOUR //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // LWG #2936 enables new element wise (more expensive) path comparison // * if this->root_name().native().compare(p.root_name().native()) != 0 return result // * if this->has_root_directory() and !p.has_root_directory() return -1 // * if !this->has_root_directory() and p.has_root_directory() return -1 // * else result of element wise comparison of path iteration where first comparison is != 0 or 0 // if all comparisons are 0 (on Windows this implementation does case insensitive root_name() // comparison) #define LWG_2936_BEHAVIOUR //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // LWG #2937 enforces that fs::equivalent emits an error, if !fs::exists(p1)||!exists(p2) #define LWG_2937_BEHAVIOUR //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // UTF8-Everywhere is the original behaviour of ghc::filesystem. But since v1.5 the windows // version defaults to std::wstring storage backend. Still all std::string will be interpreted // as UTF-8 encoded. With this define you can enfoce the old behavior on Windows, using // std::string as backend and for fs::path::native() and char for fs::path::c_str(). This // needs more conversions so it is (an was before v1.5) slower, bot might help keeping source // homogenous in a multi platform project. // #define GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // Raise errors/exceptions when invalid unicode codepoints or UTF-8 sequences are found, // instead of replacing them with the unicode replacement character (U+FFFD). // #define GHC_RAISE_UNICODE_ERRORS //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // Automatic prefix windows path with "\\?\" if they would break the MAX_PATH length. // instead of replacing them with the unicode replacement character (U+FFFD). #ifndef GHC_WIN_DISABLE_AUTO_PREFIXES #define GHC_WIN_AUTO_PREFIX_LONG_PATH #endif // GHC_WIN_DISABLE_AUTO_PREFIXES //- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - // ghc::filesystem version in decimal (major * 10000 + minor * 100 + patch) #define GHC_FILESYSTEM_VERSION 10502L #if !defined(GHC_WITH_EXCEPTIONS) && (defined(__EXCEPTIONS) || defined(__cpp_exceptions) || defined(_CPPUNWIND)) #define GHC_WITH_EXCEPTIONS #endif #if !defined(GHC_WITH_EXCEPTIONS) && defined(GHC_RAISE_UNICODE_ERRORS) #error "Can't raise unicode errors whith exception support disabled" #endif namespace ghc { namespace filesystem { #if defined(GHC_HAS_CUSTOM_STRING_VIEW) #define GHC_WITH_STRING_VIEW #elif defined(GHC_HAS_STD_STRING_VIEW) #define GHC_WITH_STRING_VIEW using std::basic_string_view; #elif defined(GHC_HAS_STD_EXPERIMENTAL_STRING_VIEW) #define GHC_WITH_STRING_VIEW using std::experimental::basic_string_view; #endif // temporary existing exception type for yet unimplemented parts class GHC_FS_API_CLASS not_implemented_exception : public std::logic_error { public: not_implemented_exception() : std::logic_error("function not implemented yet.") { } }; template class path_helper_base { public: using value_type = char_type; #ifdef GHC_OS_WINDOWS static constexpr value_type preferred_separator = '\\'; #else static constexpr value_type preferred_separator = '/'; #endif }; #if __cplusplus < 201703L template constexpr char_type path_helper_base::preferred_separator; #endif #ifdef GHC_OS_WINDOWS class path; namespace detail { bool has_executable_extension(const path& p); } #endif // 30.10.8 class path class GHC_FS_API_CLASS path #if defined(GHC_OS_WINDOWS) && !defined(GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE) #define GHC_USE_WCHAR_T #define GHC_NATIVEWP(p) p.c_str() #define GHC_PLATFORM_LITERAL(str) L##str : private path_helper_base { public: using path_helper_base::value_type; #else #define GHC_NATIVEWP(p) p.wstring().c_str() #define GHC_PLATFORM_LITERAL(str) str : private path_helper_base { public: using path_helper_base::value_type; #endif using string_type = std::basic_string; using path_helper_base::preferred_separator; // 30.10.10.1 enumeration format /// The path format in wich the constructor argument is given. enum format { generic_format, ///< The generic format, internally used by ///< ghc::filesystem::path with slashes native_format, ///< The format native to the current platform this code ///< is build for auto_format, ///< Try to auto-detect the format, fallback to native }; template struct _is_basic_string : std::false_type { }; template struct _is_basic_string> : std::true_type { }; template struct _is_basic_string, std::allocator>> : std::true_type { }; #ifdef GHC_WITH_STRING_VIEW template struct _is_basic_string> : std::true_type { }; template struct _is_basic_string>> : std::true_type { }; #endif template using path_type = typename std::enable_if::value, path>::type; template using path_from_string = typename std::enable_if<_is_basic_string::value || std::is_same::type>::value || std::is_same::type>::value || std::is_same::type>::value || std::is_same::type>::value, path>::type; template using path_type_EcharT = typename std::enable_if::value || std::is_same::value || std::is_same::value || std::is_same::value, path>::type; // 30.10.8.4.1 constructors and destructor path() noexcept; path(const path& p); path(path&& p) noexcept; path(string_type&& source, format fmt = auto_format); template > path(const Source& source, format fmt = auto_format); template path(InputIterator first, InputIterator last, format fmt = auto_format); #ifdef GHC_WITH_EXCEPTIONS template > path(const Source& source, const std::locale& loc, format fmt = auto_format); template path(InputIterator first, InputIterator last, const std::locale& loc, format fmt = auto_format); #endif ~path(); // 30.10.8.4.2 assignments path& operator=(const path& p); path& operator=(path&& p) noexcept; path& operator=(string_type&& source); path& assign(string_type&& source); template path& operator=(const Source& source); template path& assign(const Source& source); template path& assign(InputIterator first, InputIterator last); // 30.10.8.4.3 appends path& operator/=(const path& p); template path& operator/=(const Source& source); template path& append(const Source& source); template path& append(InputIterator first, InputIterator last); // 30.10.8.4.4 concatenation path& operator+=(const path& x); path& operator+=(const string_type& x); #ifdef GHC_WITH_STRING_VIEW path& operator+=(basic_string_view x); #endif path& operator+=(const value_type* x); path& operator+=(value_type x); template path_from_string& operator+=(const Source& x); template path_type_EcharT& operator+=(EcharT x); template path& concat(const Source& x); template path& concat(InputIterator first, InputIterator last); // 30.10.8.4.5 modifiers void clear() noexcept; path& make_preferred(); path& remove_filename(); path& replace_filename(const path& replacement); path& replace_extension(const path& replacement = path()); void swap(path& rhs) noexcept; // 30.10.8.4.6 native format observers const string_type& native() const noexcept; const value_type* c_str() const noexcept; operator string_type() const; template , class Allocator = std::allocator> std::basic_string string(const Allocator& a = Allocator()) const; std::string string() const; std::wstring wstring() const; #if defined(__cpp_lib_char8_t) && !defined(GHC_FILESYSTEM_ENFORCE_CPP17_API) std::u8string u8string() const; #else std::string u8string() const; #endif std::u16string u16string() const; std::u32string u32string() const; // 30.10.8.4.7 generic format observers template , class Allocator = std::allocator> std::basic_string generic_string(const Allocator& a = Allocator()) const; std::string generic_string() const; std::wstring generic_wstring() const; #if defined(__cpp_lib_char8_t) && !defined(GHC_FILESYSTEM_ENFORCE_CPP17_API) std::u8string generic_u8string() const; #else std::string generic_u8string() const; #endif std::u16string generic_u16string() const; std::u32string generic_u32string() const; // 30.10.8.4.8 compare int compare(const path& p) const noexcept; int compare(const string_type& s) const; #ifdef GHC_WITH_STRING_VIEW int compare(basic_string_view s) const; #endif int compare(const value_type* s) const; // 30.10.8.4.9 decomposition path root_name() const; path root_directory() const; path root_path() const; path relative_path() const; path parent_path() const; path filename() const; path stem() const; path extension() const; // 30.10.8.4.10 query bool empty() const noexcept; bool has_root_name() const; bool has_root_directory() const; bool has_root_path() const; bool has_relative_path() const; bool has_parent_path() const; bool has_filename() const; bool has_stem() const; bool has_extension() const; bool is_absolute() const; bool is_relative() const; // 30.10.8.4.11 generation path lexically_normal() const; path lexically_relative(const path& base) const; path lexically_proximate(const path& base) const; // 30.10.8.5 iterators class iterator; using const_iterator = iterator; iterator begin() const; iterator end() const; private: using impl_value_type = value_type; using impl_string_type = std::basic_string; friend class directory_iterator; void append_name(const value_type* name); static constexpr impl_value_type generic_separator = '/'; template class input_iterator_range { public: typedef InputIterator iterator; typedef InputIterator const_iterator; typedef typename InputIterator::difference_type difference_type; input_iterator_range(const InputIterator& first, const InputIterator& last) : _first(first) , _last(last) { } InputIterator begin() const { return _first; } InputIterator end() const { return _last; } private: InputIterator _first; InputIterator _last; }; friend void swap(path& lhs, path& rhs) noexcept; friend size_t hash_value(const path& p) noexcept; friend path canonical(const path& p, std::error_code& ec); string_type::size_type root_name_length() const noexcept; void postprocess_path_with_format(format fmt); void check_long_path(); impl_string_type _path; #ifdef GHC_OS_WINDOWS void handle_prefixes(); friend bool detail::has_executable_extension(const path& p); #ifdef GHC_WIN_AUTO_PREFIX_LONG_PATH string_type::size_type _prefixLength{0}; #else // GHC_WIN_AUTO_PREFIX_LONG_PATH static const string_type::size_type _prefixLength{0}; #endif // GHC_WIN_AUTO_PREFIX_LONG_PATH #else static const string_type::size_type _prefixLength{0}; #endif }; // 30.10.8.6 path non-member functions GHC_FS_API void swap(path& lhs, path& rhs) noexcept; GHC_FS_API size_t hash_value(const path& p) noexcept; #ifdef GHC_HAS_THREEWAY_COMP GHC_FS_API std::strong_ordering operator<=>(const path& lhs, const path& rhs) noexcept; #endif GHC_FS_API bool operator==(const path& lhs, const path& rhs) noexcept; GHC_FS_API bool operator!=(const path& lhs, const path& rhs) noexcept; GHC_FS_API bool operator<(const path& lhs, const path& rhs) noexcept; GHC_FS_API bool operator<=(const path& lhs, const path& rhs) noexcept; GHC_FS_API bool operator>(const path& lhs, const path& rhs) noexcept; GHC_FS_API bool operator>=(const path& lhs, const path& rhs) noexcept; GHC_FS_API path operator/(const path& lhs, const path& rhs); // 30.10.8.6.1 path inserter and extractor template std::basic_ostream& operator<<(std::basic_ostream& os, const path& p); template std::basic_istream& operator>>(std::basic_istream& is, path& p); // 30.10.8.6.2 path factory functions template > #if defined(__cpp_lib_char8_t) && !defined(GHC_FILESYSTEM_ENFORCE_CPP17_API) [[deprecated("use ghc::filesystem::path::path() with std::u8string instead")]] #endif path u8path(const Source& source); template #if defined(__cpp_lib_char8_t) && !defined(GHC_FILESYSTEM_ENFORCE_CPP17_API) [[deprecated("use ghc::filesystem::path::path() with std::u8string instead")]] #endif path u8path(InputIterator first, InputIterator last); // 30.10.9 class filesystem_error class GHC_FS_API_CLASS filesystem_error : public std::system_error { public: filesystem_error(const std::string& what_arg, std::error_code ec); filesystem_error(const std::string& what_arg, const path& p1, std::error_code ec); filesystem_error(const std::string& what_arg, const path& p1, const path& p2, std::error_code ec); const path& path1() const noexcept; const path& path2() const noexcept; const char* what() const noexcept override; private: std::string _what_arg; std::error_code _ec; path _p1, _p2; }; class GHC_FS_API_CLASS path::iterator { public: using value_type = const path; using difference_type = std::ptrdiff_t; using pointer = const path*; using reference = const path&; using iterator_category = std::bidirectional_iterator_tag; iterator(); iterator(const path& p, const impl_string_type::const_iterator& pos); iterator& operator++(); iterator operator++(int); iterator& operator--(); iterator operator--(int); bool operator==(const iterator& other) const; bool operator!=(const iterator& other) const; reference operator*() const; pointer operator->() const; private: friend class path; impl_string_type::const_iterator increment(const impl_string_type::const_iterator& pos) const; impl_string_type::const_iterator decrement(const impl_string_type::const_iterator& pos) const; void updateCurrent(); impl_string_type::const_iterator _first; impl_string_type::const_iterator _last; impl_string_type::const_iterator _prefix; impl_string_type::const_iterator _root; impl_string_type::const_iterator _iter; path _current; }; struct space_info { uintmax_t capacity; uintmax_t free; uintmax_t available; }; // 30.10.10, enumerations enum class file_type { none, not_found, regular, directory, symlink, block, character, fifo, socket, unknown, }; enum class perms : uint16_t { none = 0, owner_read = 0400, owner_write = 0200, owner_exec = 0100, owner_all = 0700, group_read = 040, group_write = 020, group_exec = 010, group_all = 070, others_read = 04, others_write = 02, others_exec = 01, others_all = 07, all = 0777, set_uid = 04000, set_gid = 02000, sticky_bit = 01000, mask = 07777, unknown = 0xffff }; enum class perm_options : uint16_t { replace = 3, add = 1, remove = 2, nofollow = 4, }; enum class copy_options : uint16_t { none = 0, skip_existing = 1, overwrite_existing = 2, update_existing = 4, recursive = 8, copy_symlinks = 0x10, skip_symlinks = 0x20, directories_only = 0x40, create_symlinks = 0x80, #ifndef GHC_OS_WEB create_hard_links = 0x100 #endif }; enum class directory_options : uint16_t { none = 0, follow_directory_symlink = 1, skip_permission_denied = 2, }; // 30.10.11 class file_status class GHC_FS_API_CLASS file_status { public: // 30.10.11.1 constructors and destructor file_status() noexcept; explicit file_status(file_type ft, perms prms = perms::unknown) noexcept; file_status(const file_status&) noexcept; file_status(file_status&&) noexcept; ~file_status(); // assignments: file_status& operator=(const file_status&) noexcept; file_status& operator=(file_status&&) noexcept; // 30.10.11.3 modifiers void type(file_type ft) noexcept; void permissions(perms prms) noexcept; // 30.10.11.2 observers file_type type() const noexcept; perms permissions() const noexcept; friend bool operator==(const file_status& lhs, const file_status& rhs) noexcept { return lhs.type() == rhs.type() && lhs.permissions() == rhs.permissions(); } private: file_type _type; perms _perms; }; using file_time_type = std::chrono::time_point; // 30.10.12 Class directory_entry class GHC_FS_API_CLASS directory_entry { public: // 30.10.12.1 constructors and destructor directory_entry() noexcept = default; directory_entry(const directory_entry&) = default; directory_entry(directory_entry&&) noexcept = default; #ifdef GHC_WITH_EXCEPTIONS explicit directory_entry(const path& p); #endif directory_entry(const path& p, std::error_code& ec); ~directory_entry(); // assignments: directory_entry& operator=(const directory_entry&) = default; directory_entry& operator=(directory_entry&&) noexcept = default; // 30.10.12.2 modifiers #ifdef GHC_WITH_EXCEPTIONS void assign(const path& p); void replace_filename(const path& p); void refresh(); #endif void assign(const path& p, std::error_code& ec); void replace_filename(const path& p, std::error_code& ec); void refresh(std::error_code& ec) noexcept; // 30.10.12.3 observers const filesystem::path& path() const noexcept; operator const filesystem::path&() const noexcept; #ifdef GHC_WITH_EXCEPTIONS bool exists() const; bool is_block_file() const; bool is_character_file() const; bool is_directory() const; bool is_fifo() const; bool is_other() const; bool is_regular_file() const; bool is_socket() const; bool is_symlink() const; uintmax_t file_size() const; file_time_type last_write_time() const; file_status status() const; file_status symlink_status() const; #endif bool exists(std::error_code& ec) const noexcept; bool is_block_file(std::error_code& ec) const noexcept; bool is_character_file(std::error_code& ec) const noexcept; bool is_directory(std::error_code& ec) const noexcept; bool is_fifo(std::error_code& ec) const noexcept; bool is_other(std::error_code& ec) const noexcept; bool is_regular_file(std::error_code& ec) const noexcept; bool is_socket(std::error_code& ec) const noexcept; bool is_symlink(std::error_code& ec) const noexcept; uintmax_t file_size(std::error_code& ec) const noexcept; file_time_type last_write_time(std::error_code& ec) const noexcept; file_status status(std::error_code& ec) const noexcept; file_status symlink_status(std::error_code& ec) const noexcept; #ifndef GHC_OS_WEB #ifdef GHC_WITH_EXCEPTIONS uintmax_t hard_link_count() const; #endif uintmax_t hard_link_count(std::error_code& ec) const noexcept; #endif #ifdef GHC_HAS_THREEWAY_COMP std::strong_ordering operator<=>(const directory_entry& rhs) const noexcept; #endif bool operator<(const directory_entry& rhs) const noexcept; bool operator==(const directory_entry& rhs) const noexcept; bool operator!=(const directory_entry& rhs) const noexcept; bool operator<=(const directory_entry& rhs) const noexcept; bool operator>(const directory_entry& rhs) const noexcept; bool operator>=(const directory_entry& rhs) const noexcept; private: friend class directory_iterator; filesystem::path _path; file_status _status; file_status _symlink_status; uintmax_t _file_size = 0; #ifndef GHC_OS_WINDOWS uintmax_t _hard_link_count = 0; #endif time_t _last_write_time = 0; }; // 30.10.13 Class directory_iterator class GHC_FS_API_CLASS directory_iterator { public: class GHC_FS_API_CLASS proxy { public: const directory_entry& operator*() const& noexcept { return _dir_entry; } directory_entry operator*() && noexcept { return std::move(_dir_entry); } private: explicit proxy(const directory_entry& dir_entry) : _dir_entry(dir_entry) { } friend class directory_iterator; friend class recursive_directory_iterator; directory_entry _dir_entry; }; using iterator_category = std::input_iterator_tag; using value_type = directory_entry; using difference_type = std::ptrdiff_t; using pointer = const directory_entry*; using reference = const directory_entry&; // 30.10.13.1 member functions directory_iterator() noexcept; #ifdef GHC_WITH_EXCEPTIONS explicit directory_iterator(const path& p); directory_iterator(const path& p, directory_options options); #endif directory_iterator(const path& p, std::error_code& ec) noexcept; directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept; directory_iterator(const directory_iterator& rhs); directory_iterator(directory_iterator&& rhs) noexcept; ~directory_iterator(); directory_iterator& operator=(const directory_iterator& rhs); directory_iterator& operator=(directory_iterator&& rhs) noexcept; const directory_entry& operator*() const; const directory_entry* operator->() const; #ifdef GHC_WITH_EXCEPTIONS directory_iterator& operator++(); #endif directory_iterator& increment(std::error_code& ec) noexcept; // other members as required by 27.2.3, input iterators #ifdef GHC_WITH_EXCEPTIONS proxy operator++(int) { proxy p{**this}; ++*this; return p; } #endif bool operator==(const directory_iterator& rhs) const; bool operator!=(const directory_iterator& rhs) const; private: friend class recursive_directory_iterator; class impl; std::shared_ptr _impl; }; // 30.10.13.2 directory_iterator non-member functions GHC_FS_API directory_iterator begin(directory_iterator iter) noexcept; GHC_FS_API directory_iterator end(const directory_iterator&) noexcept; // 30.10.14 class recursive_directory_iterator class GHC_FS_API_CLASS recursive_directory_iterator { public: using iterator_category = std::input_iterator_tag; using value_type = directory_entry; using difference_type = std::ptrdiff_t; using pointer = const directory_entry*; using reference = const directory_entry&; // 30.10.14.1 constructors and destructor recursive_directory_iterator() noexcept; #ifdef GHC_WITH_EXCEPTIONS explicit recursive_directory_iterator(const path& p); recursive_directory_iterator(const path& p, directory_options options); #endif recursive_directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept; recursive_directory_iterator(const path& p, std::error_code& ec) noexcept; recursive_directory_iterator(const recursive_directory_iterator& rhs); recursive_directory_iterator(recursive_directory_iterator&& rhs) noexcept; ~recursive_directory_iterator(); // 30.10.14.1 observers directory_options options() const; int depth() const; bool recursion_pending() const; const directory_entry& operator*() const; const directory_entry* operator->() const; // 30.10.14.1 modifiers recursive_directory_iterator& recursive_directory_iterator& operator=(const recursive_directory_iterator& rhs); recursive_directory_iterator& operator=(recursive_directory_iterator&& rhs) noexcept; #ifdef GHC_WITH_EXCEPTIONS recursive_directory_iterator& operator++(); #endif recursive_directory_iterator& increment(std::error_code& ec) noexcept; #ifdef GHC_WITH_EXCEPTIONS void pop(); #endif void pop(std::error_code& ec); void disable_recursion_pending(); // other members as required by 27.2.3, input iterators #ifdef GHC_WITH_EXCEPTIONS directory_iterator::proxy operator++(int) { directory_iterator::proxy proxy{**this}; ++*this; return proxy; } #endif bool operator==(const recursive_directory_iterator& rhs) const; bool operator!=(const recursive_directory_iterator& rhs) const; private: struct recursive_directory_iterator_impl { directory_options _options; bool _recursion_pending; std::stack _dir_iter_stack; recursive_directory_iterator_impl(directory_options options, bool recursion_pending) : _options(options) , _recursion_pending(recursion_pending) { } }; std::shared_ptr _impl; }; // 30.10.14.2 directory_iterator non-member functions GHC_FS_API recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept; GHC_FS_API recursive_directory_iterator end(const recursive_directory_iterator&) noexcept; // 30.10.15 filesystem operations #ifdef GHC_WITH_EXCEPTIONS GHC_FS_API path absolute(const path& p); GHC_FS_API path canonical(const path& p); GHC_FS_API void copy(const path& from, const path& to); GHC_FS_API void copy(const path& from, const path& to, copy_options options); GHC_FS_API bool copy_file(const path& from, const path& to); GHC_FS_API bool copy_file(const path& from, const path& to, copy_options option); GHC_FS_API void copy_symlink(const path& existing_symlink, const path& new_symlink); GHC_FS_API bool create_directories(const path& p); GHC_FS_API bool create_directory(const path& p); GHC_FS_API bool create_directory(const path& p, const path& attributes); GHC_FS_API void create_directory_symlink(const path& to, const path& new_symlink); GHC_FS_API void create_symlink(const path& to, const path& new_symlink); GHC_FS_API path current_path(); GHC_FS_API void current_path(const path& p); GHC_FS_API bool exists(const path& p); GHC_FS_API bool equivalent(const path& p1, const path& p2); GHC_FS_API uintmax_t file_size(const path& p); GHC_FS_API bool is_block_file(const path& p); GHC_FS_API bool is_character_file(const path& p); GHC_FS_API bool is_directory(const path& p); GHC_FS_API bool is_empty(const path& p); GHC_FS_API bool is_fifo(const path& p); GHC_FS_API bool is_other(const path& p); GHC_FS_API bool is_regular_file(const path& p); GHC_FS_API bool is_socket(const path& p); GHC_FS_API bool is_symlink(const path& p); GHC_FS_API file_time_type last_write_time(const path& p); GHC_FS_API void last_write_time(const path& p, file_time_type new_time); GHC_FS_API void permissions(const path& p, perms prms, perm_options opts = perm_options::replace); GHC_FS_API path proximate(const path& p, const path& base = current_path()); GHC_FS_API path read_symlink(const path& p); GHC_FS_API path relative(const path& p, const path& base = current_path()); GHC_FS_API bool remove(const path& p); GHC_FS_API uintmax_t remove_all(const path& p); GHC_FS_API void rename(const path& from, const path& to); GHC_FS_API void resize_file(const path& p, uintmax_t size); GHC_FS_API space_info space(const path& p); GHC_FS_API file_status status(const path& p); GHC_FS_API file_status symlink_status(const path& p); GHC_FS_API path temp_directory_path(); GHC_FS_API path weakly_canonical(const path& p); #endif GHC_FS_API path absolute(const path& p, std::error_code& ec); GHC_FS_API path canonical(const path& p, std::error_code& ec); GHC_FS_API void copy(const path& from, const path& to, std::error_code& ec) noexcept; GHC_FS_API void copy(const path& from, const path& to, copy_options options, std::error_code& ec) noexcept; GHC_FS_API bool copy_file(const path& from, const path& to, std::error_code& ec) noexcept; GHC_FS_API bool copy_file(const path& from, const path& to, copy_options option, std::error_code& ec) noexcept; GHC_FS_API void copy_symlink(const path& existing_symlink, const path& new_symlink, std::error_code& ec) noexcept; GHC_FS_API bool create_directories(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool create_directory(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool create_directory(const path& p, const path& attributes, std::error_code& ec) noexcept; GHC_FS_API void create_directory_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept; GHC_FS_API void create_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept; GHC_FS_API path current_path(std::error_code& ec); GHC_FS_API void current_path(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool exists(file_status s) noexcept; GHC_FS_API bool exists(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool equivalent(const path& p1, const path& p2, std::error_code& ec) noexcept; GHC_FS_API uintmax_t file_size(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_block_file(file_status s) noexcept; GHC_FS_API bool is_block_file(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_character_file(file_status s) noexcept; GHC_FS_API bool is_character_file(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_directory(file_status s) noexcept; GHC_FS_API bool is_directory(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_empty(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_fifo(file_status s) noexcept; GHC_FS_API bool is_fifo(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_other(file_status s) noexcept; GHC_FS_API bool is_other(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_regular_file(file_status s) noexcept; GHC_FS_API bool is_regular_file(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_socket(file_status s) noexcept; GHC_FS_API bool is_socket(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool is_symlink(file_status s) noexcept; GHC_FS_API bool is_symlink(const path& p, std::error_code& ec) noexcept; GHC_FS_API file_time_type last_write_time(const path& p, std::error_code& ec) noexcept; GHC_FS_API void last_write_time(const path& p, file_time_type new_time, std::error_code& ec) noexcept; GHC_FS_API void permissions(const path& p, perms prms, std::error_code& ec) noexcept; GHC_FS_API void permissions(const path& p, perms prms, perm_options opts, std::error_code& ec) noexcept; GHC_FS_API path proximate(const path& p, std::error_code& ec); GHC_FS_API path proximate(const path& p, const path& base, std::error_code& ec); GHC_FS_API path read_symlink(const path& p, std::error_code& ec); GHC_FS_API path relative(const path& p, std::error_code& ec); GHC_FS_API path relative(const path& p, const path& base, std::error_code& ec); GHC_FS_API bool remove(const path& p, std::error_code& ec) noexcept; GHC_FS_API uintmax_t remove_all(const path& p, std::error_code& ec) noexcept; GHC_FS_API void rename(const path& from, const path& to, std::error_code& ec) noexcept; GHC_FS_API void resize_file(const path& p, uintmax_t size, std::error_code& ec) noexcept; GHC_FS_API space_info space(const path& p, std::error_code& ec) noexcept; GHC_FS_API file_status status(const path& p, std::error_code& ec) noexcept; GHC_FS_API bool status_known(file_status s) noexcept; GHC_FS_API file_status symlink_status(const path& p, std::error_code& ec) noexcept; GHC_FS_API path temp_directory_path(std::error_code& ec) noexcept; GHC_FS_API path weakly_canonical(const path& p, std::error_code& ec) noexcept; #ifndef GHC_OS_WEB #ifdef GHC_WITH_EXCEPTIONS GHC_FS_API void create_hard_link(const path& to, const path& new_hard_link); GHC_FS_API uintmax_t hard_link_count(const path& p); #endif GHC_FS_API void create_hard_link(const path& to, const path& new_hard_link, std::error_code& ec) noexcept; GHC_FS_API uintmax_t hard_link_count(const path& p, std::error_code& ec) noexcept; #endif // Non-C++17 add-on std::fstream wrappers with path template > class basic_filebuf : public std::basic_filebuf { public: basic_filebuf() {} ~basic_filebuf() override {} basic_filebuf(const basic_filebuf&) = delete; const basic_filebuf& operator=(const basic_filebuf&) = delete; basic_filebuf* open(const path& p, std::ios_base::openmode mode) { #if defined(GHC_OS_WINDOWS) && !defined(__GLIBCXX__) return std::basic_filebuf::open(p.wstring().c_str(), mode) ? this : 0; #else return std::basic_filebuf::open(p.string().c_str(), mode) ? this : 0; #endif } }; template > class basic_ifstream : public std::basic_ifstream { public: basic_ifstream() {} #if defined(GHC_OS_WINDOWS) && !defined(__GLIBCXX__) explicit basic_ifstream(const path& p, std::ios_base::openmode mode = std::ios_base::in) : std::basic_ifstream(p.wstring().c_str(), mode) { } void open(const path& p, std::ios_base::openmode mode = std::ios_base::in) { std::basic_ifstream::open(p.wstring().c_str(), mode); } #else explicit basic_ifstream(const path& p, std::ios_base::openmode mode = std::ios_base::in) : std::basic_ifstream(p.string().c_str(), mode) { } void open(const path& p, std::ios_base::openmode mode = std::ios_base::in) { std::basic_ifstream::open(p.string().c_str(), mode); } #endif basic_ifstream(const basic_ifstream&) = delete; const basic_ifstream& operator=(const basic_ifstream&) = delete; ~basic_ifstream() override {} }; template > class basic_ofstream : public std::basic_ofstream { public: basic_ofstream() {} #if defined(GHC_OS_WINDOWS) && !defined(__GLIBCXX__) explicit basic_ofstream(const path& p, std::ios_base::openmode mode = std::ios_base::out) : std::basic_ofstream(p.wstring().c_str(), mode) { } void open(const path& p, std::ios_base::openmode mode = std::ios_base::out) { std::basic_ofstream::open(p.wstring().c_str(), mode); } #else explicit basic_ofstream(const path& p, std::ios_base::openmode mode = std::ios_base::out) : std::basic_ofstream(p.string().c_str(), mode) { } void open(const path& p, std::ios_base::openmode mode = std::ios_base::out) { std::basic_ofstream::open(p.string().c_str(), mode); } #endif basic_ofstream(const basic_ofstream&) = delete; const basic_ofstream& operator=(const basic_ofstream&) = delete; ~basic_ofstream() override {} }; template > class basic_fstream : public std::basic_fstream { public: basic_fstream() {} #if defined(GHC_OS_WINDOWS) && !defined(__GLIBCXX__) explicit basic_fstream(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) : std::basic_fstream(p.wstring().c_str(), mode) { } void open(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) { std::basic_fstream::open(p.wstring().c_str(), mode); } #else explicit basic_fstream(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) : std::basic_fstream(p.string().c_str(), mode) { } void open(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) { std::basic_fstream::open(p.string().c_str(), mode); } #endif basic_fstream(const basic_fstream&) = delete; const basic_fstream& operator=(const basic_fstream&) = delete; ~basic_fstream() override {} }; typedef basic_filebuf filebuf; typedef basic_filebuf wfilebuf; typedef basic_ifstream ifstream; typedef basic_ifstream wifstream; typedef basic_ofstream ofstream; typedef basic_ofstream wofstream; typedef basic_fstream fstream; typedef basic_fstream wfstream; class GHC_FS_API_CLASS u8arguments { public: u8arguments(int& argc, char**& argv); ~u8arguments() { _refargc = _argc; _refargv = _argv; } bool valid() const { return _isvalid; } private: int _argc; char** _argv; int& _refargc; char**& _refargv; bool _isvalid; #ifdef GHC_OS_WINDOWS std::vector _args; std::vector _argp; #endif }; //------------------------------------------------------------------------------------------------- // Implementation //------------------------------------------------------------------------------------------------- namespace detail { enum utf8_states_t { S_STRT = 0, S_RJCT = 8 }; GHC_FS_API void appendUTF8(std::string& str, uint32_t unicode); GHC_FS_API bool is_surrogate(uint32_t c); GHC_FS_API bool is_high_surrogate(uint32_t c); GHC_FS_API bool is_low_surrogate(uint32_t c); GHC_FS_API unsigned consumeUtf8Fragment(const unsigned state, const uint8_t fragment, uint32_t& codepoint); enum class portable_error { none = 0, exists, not_found, not_supported, not_implemented, invalid_argument, is_a_directory, }; GHC_FS_API std::error_code make_error_code(portable_error err); #ifdef GHC_OS_WINDOWS GHC_FS_API std::error_code make_system_error(uint32_t err = 0); #else GHC_FS_API std::error_code make_system_error(int err = 0); #endif } // namespace detail namespace detail { #ifdef GHC_EXPAND_IMPL GHC_INLINE std::error_code make_error_code(portable_error err) { #ifdef GHC_OS_WINDOWS switch (err) { case portable_error::none: return std::error_code(); case portable_error::exists: return std::error_code(ERROR_ALREADY_EXISTS, std::system_category()); case portable_error::not_found: return std::error_code(ERROR_PATH_NOT_FOUND, std::system_category()); case portable_error::not_supported: return std::error_code(ERROR_NOT_SUPPORTED, std::system_category()); case portable_error::not_implemented: return std::error_code(ERROR_CALL_NOT_IMPLEMENTED, std::system_category()); case portable_error::invalid_argument: return std::error_code(ERROR_INVALID_PARAMETER, std::system_category()); case portable_error::is_a_directory: #ifdef ERROR_DIRECTORY_NOT_SUPPORTED return std::error_code(ERROR_DIRECTORY_NOT_SUPPORTED, std::system_category()); #else return std::error_code(ERROR_NOT_SUPPORTED, std::system_category()); #endif } #else switch (err) { case portable_error::none: return std::error_code(); case portable_error::exists: return std::error_code(EEXIST, std::system_category()); case portable_error::not_found: return std::error_code(ENOENT, std::system_category()); case portable_error::not_supported: return std::error_code(ENOTSUP, std::system_category()); case portable_error::not_implemented: return std::error_code(ENOSYS, std::system_category()); case portable_error::invalid_argument: return std::error_code(EINVAL, std::system_category()); case portable_error::is_a_directory: return std::error_code(EISDIR, std::system_category()); } #endif return std::error_code(); } #ifdef GHC_OS_WINDOWS GHC_INLINE std::error_code make_system_error(uint32_t err) { return std::error_code(err ? static_cast(err) : static_cast(::GetLastError()), std::system_category()); } #else GHC_INLINE std::error_code make_system_error(int err) { return std::error_code(err ? err : errno, std::system_category()); } #endif #endif // GHC_EXPAND_IMPL template using EnableBitmask = typename std::enable_if::value || std::is_same::value || std::is_same::value || std::is_same::value, Enum>::type; } // namespace detail template constexpr detail::EnableBitmask operator&(Enum X, Enum Y) { using underlying = typename std::underlying_type::type; return static_cast(static_cast(X) & static_cast(Y)); } template constexpr detail::EnableBitmask operator|(Enum X, Enum Y) { using underlying = typename std::underlying_type::type; return static_cast(static_cast(X) | static_cast(Y)); } template constexpr detail::EnableBitmask operator^(Enum X, Enum Y) { using underlying = typename std::underlying_type::type; return static_cast(static_cast(X) ^ static_cast(Y)); } template constexpr detail::EnableBitmask operator~(Enum X) { using underlying = typename std::underlying_type::type; return static_cast(~static_cast(X)); } template detail::EnableBitmask& operator&=(Enum& X, Enum Y) { X = X & Y; return X; } template detail::EnableBitmask& operator|=(Enum& X, Enum Y) { X = X | Y; return X; } template detail::EnableBitmask& operator^=(Enum& X, Enum Y) { X = X ^ Y; return X; } #ifdef GHC_EXPAND_IMPL namespace detail { GHC_INLINE bool in_range(uint32_t c, uint32_t lo, uint32_t hi) { return (static_cast(c - lo) < (hi - lo + 1)); } GHC_INLINE bool is_surrogate(uint32_t c) { return in_range(c, 0xd800, 0xdfff); } GHC_INLINE bool is_high_surrogate(uint32_t c) { return (c & 0xfffffc00) == 0xd800; } GHC_INLINE bool is_low_surrogate(uint32_t c) { return (c & 0xfffffc00) == 0xdc00; } GHC_INLINE void appendUTF8(std::string& str, uint32_t unicode) { if (unicode <= 0x7f) { str.push_back(static_cast(unicode)); } else if (unicode >= 0x80 && unicode <= 0x7ff) { str.push_back(static_cast((unicode >> 6) + 192)); str.push_back(static_cast((unicode & 0x3f) + 128)); } else if ((unicode >= 0x800 && unicode <= 0xd7ff) || (unicode >= 0xe000 && unicode <= 0xffff)) { str.push_back(static_cast((unicode >> 12) + 224)); str.push_back(static_cast(((unicode & 0xfff) >> 6) + 128)); str.push_back(static_cast((unicode & 0x3f) + 128)); } else if (unicode >= 0x10000 && unicode <= 0x10ffff) { str.push_back(static_cast((unicode >> 18) + 240)); str.push_back(static_cast(((unicode & 0x3ffff) >> 12) + 128)); str.push_back(static_cast(((unicode & 0xfff) >> 6) + 128)); str.push_back(static_cast((unicode & 0x3f) + 128)); } else { #ifdef GHC_RAISE_UNICODE_ERRORS throw filesystem_error("Illegal code point for unicode character.", str, std::make_error_code(std::errc::illegal_byte_sequence)); #else appendUTF8(str, 0xfffd); #endif } } // Thanks to Bjoern Hoehrmann (https://bjoern.hoehrmann.de/utf-8/decoder/dfa/) // and Taylor R Campbell for the ideas to this DFA approach of UTF-8 decoding; // Generating debugging and shrinking my own DFA from scratch was a day of fun! GHC_INLINE unsigned consumeUtf8Fragment(const unsigned state, const uint8_t fragment, uint32_t& codepoint) { static const uint32_t utf8_state_info[] = { // encoded states 0x11111111u, 0x11111111u, 0x77777777u, 0x77777777u, 0x88888888u, 0x88888888u, 0x88888888u, 0x88888888u, 0x22222299u, 0x22222222u, 0x22222222u, 0x22222222u, 0x3333333au, 0x33433333u, 0x9995666bu, 0x99999999u, 0x88888880u, 0x22818108u, 0x88888881u, 0x88888882u, 0x88888884u, 0x88888887u, 0x88888886u, 0x82218108u, 0x82281108u, 0x88888888u, 0x88888883u, 0x88888885u, 0u, 0u, 0u, 0u, }; uint8_t category = fragment < 128 ? 0 : (utf8_state_info[(fragment >> 3) & 0xf] >> ((fragment & 7) << 2)) & 0xf; codepoint = (state ? (codepoint << 6) | (fragment & 0x3fu) : (0xffu >> category) & fragment); return state == S_RJCT ? static_cast(S_RJCT) : static_cast((utf8_state_info[category + 16] >> (state << 2)) & 0xf); } GHC_INLINE bool validUtf8(const std::string& utf8String) { std::string::const_iterator iter = utf8String.begin(); unsigned utf8_state = S_STRT; std::uint32_t codepoint = 0; while (iter < utf8String.end()) { if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast(*iter++), codepoint)) == S_RJCT) { return false; } } if (utf8_state) { return false; } return true; } } // namespace detail #endif namespace detail { template ::value && (sizeof(typename Utf8String::value_type) == 1) && (sizeof(typename StringType::value_type) == 1)>::type* = nullptr> inline StringType fromUtf8(const Utf8String& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) { return StringType(utf8String.begin(), utf8String.end(), alloc); } template ::value && (sizeof(typename Utf8String::value_type) == 1) && (sizeof(typename StringType::value_type) == 2)>::type* = nullptr> inline StringType fromUtf8(const Utf8String& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) { StringType result(alloc); result.reserve(utf8String.length()); auto iter = utf8String.cbegin(); unsigned utf8_state = S_STRT; std::uint32_t codepoint = 0; while (iter < utf8String.cend()) { if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast(*iter++), codepoint)) == S_STRT) { if (codepoint <= 0xffff) { result += static_cast(codepoint); } else { codepoint -= 0x10000; result += static_cast((codepoint >> 10) + 0xd800); result += static_cast((codepoint & 0x3ff) + 0xdc00); } codepoint = 0; } else if (utf8_state == S_RJCT) { #ifdef GHC_RAISE_UNICODE_ERRORS throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); #else result += static_cast(0xfffd); utf8_state = S_STRT; codepoint = 0; #endif } } if (utf8_state) { #ifdef GHC_RAISE_UNICODE_ERRORS throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); #else result += static_cast(0xfffd); #endif } return result; } template ::value && (sizeof(typename Utf8String::value_type) == 1) && (sizeof(typename StringType::value_type) == 4)>::type* = nullptr> inline StringType fromUtf8(const Utf8String& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) { StringType result(alloc); result.reserve(utf8String.length()); auto iter = utf8String.cbegin(); unsigned utf8_state = S_STRT; std::uint32_t codepoint = 0; while (iter < utf8String.cend()) { if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast(*iter++), codepoint)) == S_STRT) { result += static_cast(codepoint); codepoint = 0; } else if (utf8_state == S_RJCT) { #ifdef GHC_RAISE_UNICODE_ERRORS throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); #else result += static_cast(0xfffd); utf8_state = S_STRT; codepoint = 0; #endif } } if (utf8_state) { #ifdef GHC_RAISE_UNICODE_ERRORS throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); #else result += static_cast(0xfffd); #endif } return result; } template inline StringType fromUtf8(const charT (&utf8String)[N]) { #ifdef GHC_WITH_STRING_VIEW return fromUtf8(basic_string_view(utf8String, N - 1)); #else return fromUtf8(std::basic_string(utf8String, N - 1)); #endif } template ::value && (sizeof(typename strT::value_type) == 1), int>::type size = 1> inline std::string toUtf8(const strT& unicodeString) { return std::string(unicodeString.begin(), unicodeString.end()); } template ::value && (sizeof(typename strT::value_type) == 2), int>::type size = 2> inline std::string toUtf8(const strT& unicodeString) { std::string result; for (auto iter = unicodeString.begin(); iter != unicodeString.end(); ++iter) { char32_t c = *iter; if (is_surrogate(c)) { ++iter; if (iter != unicodeString.end() && is_high_surrogate(c) && is_low_surrogate(*iter)) { appendUTF8(result, (char32_t(c) << 10) + *iter - 0x35fdc00); } else { #ifdef GHC_RAISE_UNICODE_ERRORS throw filesystem_error("Illegal code point for unicode character.", result, std::make_error_code(std::errc::illegal_byte_sequence)); #else appendUTF8(result, 0xfffd); if (iter == unicodeString.end()) { break; } #endif } } else { appendUTF8(result, c); } } return result; } template ::value && (sizeof(typename strT::value_type) == 4), int>::type size = 4> inline std::string toUtf8(const strT& unicodeString) { std::string result; for (auto c : unicodeString) { appendUTF8(result, static_cast(c)); } return result; } template inline std::string toUtf8(const charT* unicodeString) { #ifdef GHC_WITH_STRING_VIEW return toUtf8(basic_string_view>(unicodeString)); #else return toUtf8(std::basic_string>(unicodeString)); #endif } #ifdef GHC_USE_WCHAR_T template ::value && (sizeof(typename WString::value_type) == 2) && (sizeof(typename StringType::value_type) == 1), bool>::type = false> inline StringType fromWChar(const WString& wString, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) { auto temp = toUtf8(wString); return StringType(temp.begin(), temp.end(), alloc); } template ::value && (sizeof(typename WString::value_type) == 2) && (sizeof(typename StringType::value_type) == 2), bool>::type = false> inline StringType fromWChar(const WString& wString, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) { return StringType(wString.begin(), wString.end(), alloc); } template ::value && (sizeof(typename WString::value_type) == 2) && (sizeof(typename StringType::value_type) == 4), bool>::type = false> inline StringType fromWChar(const WString& wString, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) { auto temp = toUtf8(wString); return fromUtf8(temp, alloc); } template ::value && (sizeof(typename strT::value_type) == 1), bool>::type = false> inline std::wstring toWChar(const strT& unicodeString) { return fromUtf8(unicodeString); } template ::value && (sizeof(typename strT::value_type) == 2), bool>::type = false> inline std::wstring toWChar(const strT& unicodeString) { return std::wstring(unicodeString.begin(), unicodeString.end()); } template ::value && (sizeof(typename strT::value_type) == 4), bool>::type = false> inline std::wstring toWChar(const strT& unicodeString) { auto temp = toUtf8(unicodeString); return fromUtf8(temp); } template inline std::wstring toWChar(const charT* unicodeString) { #ifdef GHC_WITH_STRING_VIEW return toWChar(basic_string_view>(unicodeString)); #else return toWChar(std::basic_string>(unicodeString)); #endif } #endif // GHC_USE_WCHAR_T } // namespace detail #ifdef GHC_EXPAND_IMPL namespace detail { template ::value, bool>::type = true> GHC_INLINE bool startsWith(const strT& what, const strT& with) { return with.length() <= what.length() && equal(with.begin(), with.end(), what.begin()); } template ::value, bool>::type = true> GHC_INLINE bool endsWith(const strT& what, const strT& with) { return with.length() <= what.length() && what.compare(what.length() - with.length(), with.size(), with) == 0; } } // namespace detail GHC_INLINE void path::check_long_path() { #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) if (is_absolute() && _path.length() >= MAX_PATH - 12 && !detail::startsWith(_path, impl_string_type(GHC_PLATFORM_LITERAL("\\\\?\\")))) { postprocess_path_with_format(native_format); } #endif } GHC_INLINE void path::postprocess_path_with_format(path::format fmt) { #ifdef GHC_RAISE_UNICODE_ERRORS if (!detail::validUtf8(_path)) { path t; t._path = _path; throw filesystem_error("Illegal byte sequence for unicode character.", t, std::make_error_code(std::errc::illegal_byte_sequence)); } #endif switch (fmt) { #ifdef GHC_OS_WINDOWS case path::native_format: case path::auto_format: case path::generic_format: for (auto& c : _path) { if (c == generic_separator) { c = preferred_separator; } } #ifdef GHC_WIN_AUTO_PREFIX_LONG_PATH if (is_absolute() && _path.length() >= MAX_PATH - 12 && !detail::startsWith(_path, impl_string_type(GHC_PLATFORM_LITERAL("\\\\?\\")))) { _path = GHC_PLATFORM_LITERAL("\\\\?\\") + _path; } #endif handle_prefixes(); break; #else case path::auto_format: case path::native_format: case path::generic_format: // nothing to do break; #endif } if (_path.length() > _prefixLength + 2 && _path[_prefixLength] == preferred_separator && _path[_prefixLength + 1] == preferred_separator && _path[_prefixLength + 2] != preferred_separator) { impl_string_type::iterator new_end = std::unique(_path.begin() + static_cast(_prefixLength) + 2, _path.end(), [](path::value_type lhs, path::value_type rhs) { return lhs == rhs && lhs == preferred_separator; }); _path.erase(new_end, _path.end()); } else { impl_string_type::iterator new_end = std::unique(_path.begin() + static_cast(_prefixLength), _path.end(), [](path::value_type lhs, path::value_type rhs) { return lhs == rhs && lhs == preferred_separator; }); _path.erase(new_end, _path.end()); } } #endif // GHC_EXPAND_IMPL template inline path::path(const Source& source, format fmt) #ifdef GHC_USE_WCHAR_T : _path(detail::toWChar(source)) #else : _path(detail::toUtf8(source)) #endif { postprocess_path_with_format(fmt); } template inline path u8path(const Source& source) { return path(source); } template inline path u8path(InputIterator first, InputIterator last) { return path(first, last); } template inline path::path(InputIterator first, InputIterator last, format fmt) : path(std::basic_string::value_type>(first, last), fmt) { // delegated } #ifdef GHC_EXPAND_IMPL namespace detail { GHC_INLINE bool equals_simple_insensitive(const path::value_type* str1, const path::value_type* str2) { #ifdef GHC_OS_WINDOWS #ifdef __GNUC__ while (::tolower((unsigned char)*str1) == ::tolower((unsigned char)*str2++)) { if (*str1++ == 0) return true; } return false; #else // __GNUC__ #ifdef GHC_USE_WCHAR_T return 0 == ::_wcsicmp(str1, str2); #else // GHC_USE_WCHAR_T return 0 == ::_stricmp(str1, str2); #endif // GHC_USE_WCHAR_T #endif // __GNUC__ #else // GHC_OS_WINDOWS return 0 == ::strcasecmp(str1, str2); #endif // GHC_OS_WINDOWS } GHC_INLINE int compare_simple_insensitive(const path::value_type* str1, size_t len1, const path::value_type* str2, size_t len2) { while (len1 > 0 && len2 > 0 && ::tolower((unsigned char)*str1) == ::tolower((unsigned char)*str2)) { --len1; --len2; ++str1; ++str2; } if (len1 && len2) { return *str1 < *str2 ? -1 : 1; } if (len1 == 0 && len2 == 0) { return 0; } return len1 == 0 ? -1 : 1; } GHC_INLINE const char* strerror_adapter(char* gnu, char*) { return gnu; } GHC_INLINE const char* strerror_adapter(int posix, char* buffer) { if (posix) { return "Error in strerror_r!"; } return buffer; } template GHC_INLINE std::string systemErrorText(ErrorNumber code = 0) { #if defined(GHC_OS_WINDOWS) LPVOID msgBuf; DWORD dw = code ? static_cast(code) : ::GetLastError(); FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPWSTR)&msgBuf, 0, NULL); std::string msg = toUtf8(std::wstring((LPWSTR)msgBuf)); LocalFree(msgBuf); return msg; #else char buffer[512]; return strerror_adapter(strerror_r(code ? code : errno, buffer, sizeof(buffer)), buffer); #endif } #ifdef GHC_OS_WINDOWS using CreateSymbolicLinkW_fp = BOOLEAN(WINAPI*)(LPCWSTR, LPCWSTR, DWORD); using CreateHardLinkW_fp = BOOLEAN(WINAPI*)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES); GHC_INLINE void create_symlink(const path& target_name, const path& new_symlink, bool to_directory, std::error_code& ec) { std::error_code tec; auto fs = status(target_name, tec); if ((fs.type() == file_type::directory && !to_directory) || (fs.type() == file_type::regular && to_directory)) { ec = detail::make_error_code(detail::portable_error::not_supported); return; } #if defined(__GNUC__) && __GNUC__ >= 8 #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wcast-function-type" #endif static CreateSymbolicLinkW_fp api_call = reinterpret_cast(GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "CreateSymbolicLinkW")); #if defined(__GNUC__) && __GNUC__ >= 8 #pragma GCC diagnostic pop #endif if (api_call) { if (api_call(detail::fromUtf8(new_symlink.u8string()).c_str(), detail::fromUtf8(target_name.u8string()).c_str(), to_directory ? 1 : 0) == 0) { auto result = ::GetLastError(); if (result == ERROR_PRIVILEGE_NOT_HELD && api_call(detail::fromUtf8(new_symlink.u8string()).c_str(), detail::fromUtf8(target_name.u8string()).c_str(), to_directory ? 3 : 2) != 0) { return; } ec = detail::make_system_error(result); } } else { ec = detail::make_system_error(ERROR_NOT_SUPPORTED); } } GHC_INLINE void create_hardlink(const path& target_name, const path& new_hardlink, std::error_code& ec) { #if defined(__GNUC__) && __GNUC__ >= 8 #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wcast-function-type" #endif static CreateHardLinkW_fp api_call = reinterpret_cast(GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "CreateHardLinkW")); #if defined(__GNUC__) && __GNUC__ >= 8 #pragma GCC diagnostic pop #endif if (api_call) { if (api_call(GHC_NATIVEWP(new_hardlink), GHC_NATIVEWP(target_name), NULL) == 0) { ec = detail::make_system_error(); } } else { ec = detail::make_system_error(ERROR_NOT_SUPPORTED); } } GHC_INLINE path getFullPathName(const wchar_t* p, std::error_code& ec) { ULONG size = ::GetFullPathNameW(p, 0, 0, 0); if (size) { std::vector buf(size, 0); ULONG s2 = GetFullPathNameW(p, size, buf.data(), nullptr); if (s2 && s2 < size) { return path(std::wstring(buf.data(), s2)); } } ec = detail::make_system_error(); return path(); } #else GHC_INLINE void create_symlink(const path& target_name, const path& new_symlink, bool, std::error_code& ec) { if (::symlink(target_name.c_str(), new_symlink.c_str()) != 0) { ec = detail::make_system_error(); } } #ifndef GHC_OS_WEB GHC_INLINE void create_hardlink(const path& target_name, const path& new_hardlink, std::error_code& ec) { if (::link(target_name.c_str(), new_hardlink.c_str()) != 0) { ec = detail::make_system_error(); } } #endif #endif template GHC_INLINE file_status file_status_from_st_mode(T mode) { #ifdef GHC_OS_WINDOWS file_type ft = file_type::unknown; if ((mode & _S_IFDIR) == _S_IFDIR) { ft = file_type::directory; } else if ((mode & _S_IFREG) == _S_IFREG) { ft = file_type::regular; } else if ((mode & _S_IFCHR) == _S_IFCHR) { ft = file_type::character; } perms prms = static_cast(mode & 0xfff); return file_status(ft, prms); #else file_type ft = file_type::unknown; if (S_ISDIR(mode)) { ft = file_type::directory; } else if (S_ISREG(mode)) { ft = file_type::regular; } else if (S_ISCHR(mode)) { ft = file_type::character; } else if (S_ISBLK(mode)) { ft = file_type::block; } else if (S_ISFIFO(mode)) { ft = file_type::fifo; } else if (S_ISLNK(mode)) { ft = file_type::symlink; } else if (S_ISSOCK(mode)) { ft = file_type::socket; } perms prms = static_cast(mode & 0xfff); return file_status(ft, prms); #endif } GHC_INLINE path resolveSymlink(const path& p, std::error_code& ec) { #ifdef GHC_OS_WINDOWS #ifndef REPARSE_DATA_BUFFER_HEADER_SIZE typedef struct _REPARSE_DATA_BUFFER { ULONG ReparseTag; USHORT ReparseDataLength; USHORT Reserved; union { struct { USHORT SubstituteNameOffset; USHORT SubstituteNameLength; USHORT PrintNameOffset; USHORT PrintNameLength; ULONG Flags; WCHAR PathBuffer[1]; } SymbolicLinkReparseBuffer; struct { USHORT SubstituteNameOffset; USHORT SubstituteNameLength; USHORT PrintNameOffset; USHORT PrintNameLength; WCHAR PathBuffer[1]; } MountPointReparseBuffer; struct { UCHAR DataBuffer[1]; } GenericReparseBuffer; } DUMMYUNIONNAME; } REPARSE_DATA_BUFFER; #ifndef MAXIMUM_REPARSE_DATA_BUFFER_SIZE #define MAXIMUM_REPARSE_DATA_BUFFER_SIZE (16 * 1024) #endif #endif std::shared_ptr file(CreateFileW(GHC_NATIVEWP(p), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); if (file.get() == INVALID_HANDLE_VALUE) { ec = detail::make_system_error(); return path(); } std::shared_ptr reparseData((REPARSE_DATA_BUFFER*)std::calloc(1, MAXIMUM_REPARSE_DATA_BUFFER_SIZE), std::free); ULONG bufferUsed; path result; if (DeviceIoControl(file.get(), FSCTL_GET_REPARSE_POINT, 0, 0, reparseData.get(), MAXIMUM_REPARSE_DATA_BUFFER_SIZE, &bufferUsed, 0)) { if (IsReparseTagMicrosoft(reparseData->ReparseTag)) { switch (reparseData->ReparseTag) { case IO_REPARSE_TAG_SYMLINK: { auto printName = std::wstring(&reparseData->SymbolicLinkReparseBuffer.PathBuffer[reparseData->SymbolicLinkReparseBuffer.PrintNameOffset / sizeof(WCHAR)], reparseData->SymbolicLinkReparseBuffer.PrintNameLength / sizeof(WCHAR)); auto substituteName = std::wstring(&reparseData->SymbolicLinkReparseBuffer.PathBuffer[reparseData->SymbolicLinkReparseBuffer.SubstituteNameOffset / sizeof(WCHAR)], reparseData->SymbolicLinkReparseBuffer.SubstituteNameLength / sizeof(WCHAR)); if (detail::endsWith(substituteName, printName) && detail::startsWith(substituteName, std::wstring(L"\\??\\"))) { result = printName; } else { result = substituteName; } if (reparseData->SymbolicLinkReparseBuffer.Flags & 0x1 /*SYMLINK_FLAG_RELATIVE*/) { result = p.parent_path() / result; } break; } case IO_REPARSE_TAG_MOUNT_POINT: result = std::wstring(&reparseData->MountPointReparseBuffer.PathBuffer[reparseData->MountPointReparseBuffer.SubstituteNameOffset / sizeof(WCHAR)], reparseData->MountPointReparseBuffer.SubstituteNameLength / sizeof(WCHAR)); break; default: break; } } } else { ec = detail::make_system_error(); } return result; #else size_t bufferSize = 256; while (true) { std::vector buffer(bufferSize, static_cast(0)); auto rc = ::readlink(p.c_str(), buffer.data(), buffer.size()); if (rc < 0) { ec = detail::make_system_error(); return path(); } else if (rc < static_cast(bufferSize)) { return path(std::string(buffer.data(), static_cast(rc))); } bufferSize *= 2; } return path(); #endif } #ifdef GHC_OS_WINDOWS GHC_INLINE time_t timeFromFILETIME(const FILETIME& ft) { ULARGE_INTEGER ull; ull.LowPart = ft.dwLowDateTime; ull.HighPart = ft.dwHighDateTime; return static_cast(ull.QuadPart / 10000000ULL - 11644473600ULL); } GHC_INLINE void timeToFILETIME(time_t t, FILETIME& ft) { LONGLONG ll; ll = Int32x32To64(t, 10000000) + 116444736000000000; ft.dwLowDateTime = static_cast(ll); ft.dwHighDateTime = static_cast(ll >> 32); } template GHC_INLINE uintmax_t hard_links_from_INFO(const INFO* info) { return static_cast(-1); } template <> GHC_INLINE uintmax_t hard_links_from_INFO(const BY_HANDLE_FILE_INFORMATION* info) { return info->nNumberOfLinks; } template GHC_INLINE file_status status_from_INFO(const path& p, const INFO* info, std::error_code&, uintmax_t* sz = nullptr, time_t* lwt = nullptr) { file_type ft = file_type::unknown; if ((info->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) { ft = file_type::symlink; } else { if ((info->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) { ft = file_type::directory; } else { ft = file_type::regular; } } perms prms = perms::owner_read | perms::group_read | perms::others_read; if (!(info->dwFileAttributes & FILE_ATTRIBUTE_READONLY)) { prms = prms | perms::owner_write | perms::group_write | perms::others_write; } if (has_executable_extension(p)) { prms = prms | perms::owner_exec | perms::group_exec | perms::others_exec; } if (sz) { *sz = static_cast(info->nFileSizeHigh) << (sizeof(info->nFileSizeHigh) * 8) | info->nFileSizeLow; } if (lwt) { *lwt = detail::timeFromFILETIME(info->ftLastWriteTime); } return file_status(ft, prms); } #endif GHC_INLINE bool is_not_found_error(std::error_code& ec) { #ifdef GHC_OS_WINDOWS return ec.value() == ERROR_FILE_NOT_FOUND || ec.value() == ERROR_PATH_NOT_FOUND || ec.value() == ERROR_INVALID_NAME; #else return ec.value() == ENOENT || ec.value() == ENOTDIR; #endif } GHC_INLINE file_status symlink_status_ex(const path& p, std::error_code& ec, uintmax_t* sz = nullptr, uintmax_t* nhl = nullptr, time_t* lwt = nullptr) noexcept { #ifdef GHC_OS_WINDOWS file_status fs; WIN32_FILE_ATTRIBUTE_DATA attr; if (!GetFileAttributesExW(GHC_NATIVEWP(p), GetFileExInfoStandard, &attr)) { ec = detail::make_system_error(); } else { ec.clear(); fs = detail::status_from_INFO(p, &attr, ec, sz, lwt); if (nhl) { *nhl = 0; } if (attr.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { fs.type(file_type::symlink); } } if (detail::is_not_found_error(ec)) { return file_status(file_type::not_found); } return ec ? file_status(file_type::none) : fs; #else (void)sz; (void)nhl; (void)lwt; struct ::stat fs; auto result = ::lstat(p.c_str(), &fs); if (result == 0) { ec.clear(); file_status f_s = detail::file_status_from_st_mode(fs.st_mode); return f_s; } ec = detail::make_system_error(); if (detail::is_not_found_error(ec)) { return file_status(file_type::not_found, perms::unknown); } return file_status(file_type::none); #endif } GHC_INLINE file_status status_ex(const path& p, std::error_code& ec, file_status* sls = nullptr, uintmax_t* sz = nullptr, uintmax_t* nhl = nullptr, time_t* lwt = nullptr, int recurse_count = 0) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS if (recurse_count > 16) { ec = detail::make_system_error(0x2A9 /*ERROR_STOPPED_ON_SYMLINK*/); return file_status(file_type::unknown); } WIN32_FILE_ATTRIBUTE_DATA attr; if (!::GetFileAttributesExW(GHC_NATIVEWP(p), GetFileExInfoStandard, &attr)) { ec = detail::make_system_error(); } else if (attr.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { path target = resolveSymlink(p, ec); file_status result; if (!ec && !target.empty()) { if (sls) { *sls = status_from_INFO(p, &attr, ec); } return detail::status_ex(target, ec, nullptr, sz, nhl, lwt, recurse_count + 1); } return file_status(file_type::unknown); } if (ec) { if (detail::is_not_found_error(ec)) { return file_status(file_type::not_found); } return file_status(file_type::none); } if (nhl) { *nhl = 0; } return detail::status_from_INFO(p, &attr, ec, sz, lwt); #else (void)recurse_count; struct ::stat st; auto result = ::lstat(p.c_str(), &st); if (result == 0) { ec.clear(); file_status fs = detail::file_status_from_st_mode(st.st_mode); if (sls) { *sls = fs; } if (fs.type() == file_type::symlink) { result = ::stat(p.c_str(), &st); if (result == 0) { fs = detail::file_status_from_st_mode(st.st_mode); } } if (sz) { *sz = static_cast(st.st_size); } if (nhl) { *nhl = st.st_nlink; } if (lwt) { *lwt = st.st_mtime; } return fs; } else { ec = detail::make_system_error(); if (detail::is_not_found_error(ec)) { return file_status(file_type::not_found, perms::unknown); } return file_status(file_type::none); } #endif } } // namespace detail GHC_INLINE u8arguments::u8arguments(int& argc, char**& argv) : _argc(argc) , _argv(argv) , _refargc(argc) , _refargv(argv) , _isvalid(false) { #ifdef GHC_OS_WINDOWS LPWSTR* p; p = ::CommandLineToArgvW(::GetCommandLineW(), &argc); _args.reserve(static_cast(argc)); _argp.reserve(static_cast(argc)); for (size_t i = 0; i < static_cast(argc); ++i) { _args.push_back(detail::toUtf8(std::wstring(p[i]))); _argp.push_back((char*)_args[i].data()); } argv = _argp.data(); ::LocalFree(p); _isvalid = true; #else std::setlocale(LC_ALL, ""); #if defined(__ANDROID__) && __ANDROID_API__ < 26 _isvalid = true; #else if (detail::equals_simple_insensitive(::nl_langinfo(CODESET), "UTF-8")) { _isvalid = true; } #endif #endif } //----------------------------------------------------------------------------- // 30.10.8.4.1 constructors and destructor GHC_INLINE path::path() noexcept {} GHC_INLINE path::path(const path& p) : _path(p._path) #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) , _prefixLength(p._prefixLength) #endif { } GHC_INLINE path::path(path&& p) noexcept : _path(std::move(p._path)) #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) , _prefixLength(p._prefixLength) #endif { } GHC_INLINE path::path(string_type&& source, format fmt) : _path(std::move(source)) { postprocess_path_with_format(fmt); } #endif // GHC_EXPAND_IMPL #ifdef GHC_WITH_EXCEPTIONS template inline path::path(const Source& source, const std::locale& loc, format fmt) : path(source, fmt) { std::string locName = loc.name(); if (!(locName.length() >= 5 && (locName.substr(locName.length() - 5) == "UTF-8" || locName.substr(locName.length() - 5) == "utf-8"))) { throw filesystem_error("This implementation only supports UTF-8 locales!", path(_path), detail::make_error_code(detail::portable_error::not_supported)); } } template inline path::path(InputIterator first, InputIterator last, const std::locale& loc, format fmt) : path(std::basic_string::value_type>(first, last), fmt) { std::string locName = loc.name(); if (!(locName.length() >= 5 && (locName.substr(locName.length() - 5) == "UTF-8" || locName.substr(locName.length() - 5) == "utf-8"))) { throw filesystem_error("This implementation only supports UTF-8 locales!", path(_path), detail::make_error_code(detail::portable_error::not_supported)); } } #endif #ifdef GHC_EXPAND_IMPL GHC_INLINE path::~path() {} //----------------------------------------------------------------------------- // 30.10.8.4.2 assignments GHC_INLINE path& path::operator=(const path& p) { _path = p._path; #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) _prefixLength = p._prefixLength; #endif return *this; } GHC_INLINE path& path::operator=(path&& p) noexcept { _path = std::move(p._path); #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) _prefixLength = p._prefixLength; #endif return *this; } GHC_INLINE path& path::operator=(path::string_type&& source) { return assign(source); } GHC_INLINE path& path::assign(path::string_type&& source) { _path = std::move(source); postprocess_path_with_format(native_format); return *this; } #endif // GHC_EXPAND_IMPL template inline path& path::operator=(const Source& source) { return assign(source); } template inline path& path::assign(const Source& source) { #ifdef GHC_USE_WCHAR_T _path.assign(detail::toWChar(source)); #else _path.assign(detail::toUtf8(source)); #endif postprocess_path_with_format(native_format); return *this; } template <> inline path& path::assign(const path& source) { _path = source._path; #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) _prefixLength = source._prefixLength; #endif return *this; } template inline path& path::assign(InputIterator first, InputIterator last) { _path.assign(first, last); postprocess_path_with_format(native_format); return *this; } #ifdef GHC_EXPAND_IMPL //----------------------------------------------------------------------------- // 30.10.8.4.3 appends GHC_INLINE path& path::operator/=(const path& p) { if (p.empty()) { // was: if ((!has_root_directory() && is_absolute()) || has_filename()) if (!_path.empty() && _path[_path.length() - 1] != preferred_separator && _path[_path.length() - 1] != ':') { _path += preferred_separator; } return *this; } if ((p.is_absolute() && (_path != root_name()._path || p._path != "/")) || (p.has_root_name() && p.root_name() != root_name())) { assign(p); return *this; } if (p.has_root_directory()) { assign(root_name()); } else if ((!has_root_directory() && is_absolute()) || has_filename()) { _path += preferred_separator; } auto iter = p.begin(); bool first = true; if (p.has_root_name()) { ++iter; } while (iter != p.end()) { if (!first && !(!_path.empty() && _path[_path.length() - 1] == preferred_separator)) { _path += preferred_separator; } first = false; _path += (*iter++).native(); } check_long_path(); return *this; } GHC_INLINE void path::append_name(const value_type* name) { if (_path.empty()) { this->operator/=(path(name)); } else { if (_path.back() != path::preferred_separator) { _path.push_back(path::preferred_separator); } _path += name; check_long_path(); } } #endif // GHC_EXPAND_IMPL template inline path& path::operator/=(const Source& source) { return append(source); } template inline path& path::append(const Source& source) { return this->operator/=(path(source)); } template <> inline path& path::append(const path& p) { return this->operator/=(p); } template inline path& path::append(InputIterator first, InputIterator last) { std::basic_string::value_type> part(first, last); return append(part); } #ifdef GHC_EXPAND_IMPL //----------------------------------------------------------------------------- // 30.10.8.4.4 concatenation GHC_INLINE path& path::operator+=(const path& x) { return concat(x._path); } GHC_INLINE path& path::operator+=(const string_type& x) { return concat(x); } #ifdef GHC_WITH_STRING_VIEW GHC_INLINE path& path::operator+=(basic_string_view x) { return concat(x); } #endif GHC_INLINE path& path::operator+=(const value_type* x) { #ifdef GHC_WITH_STRING_VIEW basic_string_view part(x); #else string_type part(x); #endif return concat(part); } GHC_INLINE path& path::operator+=(value_type x) { #ifdef GHC_OS_WINDOWS if (x == generic_separator) { x = preferred_separator; } #endif if (_path.empty() || _path.back() != preferred_separator) { _path += x; } check_long_path(); return *this; } #endif // GHC_EXPAND_IMPL template inline path::path_from_string& path::operator+=(const Source& x) { return concat(x); } template inline path::path_type_EcharT& path::operator+=(EcharT x) { #ifdef GHC_WITH_STRING_VIEW basic_string_view part(&x, 1); #else std::basic_string part(1, x); #endif concat(part); return *this; } template inline path& path::concat(const Source& x) { path p(x); _path += p._path; postprocess_path_with_format(native_format); return *this; } template inline path& path::concat(InputIterator first, InputIterator last) { _path.append(first, last); postprocess_path_with_format(native_format); return *this; } #ifdef GHC_EXPAND_IMPL //----------------------------------------------------------------------------- // 30.10.8.4.5 modifiers GHC_INLINE void path::clear() noexcept { _path.clear(); #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) _prefixLength = 0; #endif } GHC_INLINE path& path::make_preferred() { // as this filesystem implementation only uses generic_format // internally, this must be a no-op return *this; } GHC_INLINE path& path::remove_filename() { if (has_filename()) { _path.erase(_path.size() - filename()._path.size()); } return *this; } GHC_INLINE path& path::replace_filename(const path& replacement) { remove_filename(); return append(replacement); } GHC_INLINE path& path::replace_extension(const path& replacement) { if (has_extension()) { _path.erase(_path.size() - extension()._path.size()); } if (!replacement.empty() && replacement._path[0] != '.') { _path += '.'; } return concat(replacement); } GHC_INLINE void path::swap(path& rhs) noexcept { _path.swap(rhs._path); #if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) std::swap(_prefixLength, rhs._prefixLength); #endif } //----------------------------------------------------------------------------- // 30.10.8.4.6, native format observers GHC_INLINE const path::string_type& path::native() const noexcept { return _path; } GHC_INLINE const path::value_type* path::c_str() const noexcept { return native().c_str(); } GHC_INLINE path::operator path::string_type() const { return native(); } #endif // GHC_EXPAND_IMPL template inline std::basic_string path::string(const Allocator& a) const { #ifdef GHC_USE_WCHAR_T return detail::fromWChar>(_path, a); #else return detail::fromUtf8>(_path, a); #endif } #ifdef GHC_EXPAND_IMPL GHC_INLINE std::string path::string() const { #ifdef GHC_USE_WCHAR_T return detail::toUtf8(native()); #else return native(); #endif } GHC_INLINE std::wstring path::wstring() const { #ifdef GHC_USE_WCHAR_T return native(); #else return detail::fromUtf8(native()); #endif } #if defined(__cpp_lib_char8_t) && !defined(GHC_FILESYSTEM_ENFORCE_CPP17_API) GHC_INLINE std::u8string path::u8string() const { #ifdef GHC_USE_WCHAR_T return std::u8string(reinterpret_cast(detail::toUtf8(native()).c_str())); #else return std::u8string(reinterpret_cast(c_str())); #endif } #else GHC_INLINE std::string path::u8string() const { #ifdef GHC_USE_WCHAR_T return detail::toUtf8(native()); #else return native(); #endif } #endif GHC_INLINE std::u16string path::u16string() const { // TODO: optimize return detail::fromUtf8(string()); } GHC_INLINE std::u32string path::u32string() const { // TODO: optimize return detail::fromUtf8(string()); } #endif // GHC_EXPAND_IMPL //----------------------------------------------------------------------------- // 30.10.8.4.7, generic format observers template inline std::basic_string path::generic_string(const Allocator& a) const { #ifdef GHC_OS_WINDOWS #ifdef GHC_USE_WCHAR_T auto result = detail::fromWChar, path::string_type>(_path, a); #else auto result = detail::fromUtf8>(_path, a); #endif for (auto& c : result) { if (c == preferred_separator) { c = generic_separator; } } return result; #else return detail::fromUtf8>(_path, a); #endif } #ifdef GHC_EXPAND_IMPL GHC_INLINE std::string path::generic_string() const { #ifdef GHC_OS_WINDOWS return generic_string(); #else return _path; #endif } GHC_INLINE std::wstring path::generic_wstring() const { #ifdef GHC_OS_WINDOWS return generic_string(); #else return detail::fromUtf8(_path); #endif } // namespace filesystem #if defined(__cpp_lib_char8_t) && !defined(GHC_FILESYSTEM_ENFORCE_CPP17_API) GHC_INLINE std::u8string path::generic_u8string() const { #ifdef GHC_OS_WINDOWS return generic_string(); #else return std::u8string(reinterpret_cast(_path.c_str())); #endif } #else GHC_INLINE std::string path::generic_u8string() const { #ifdef GHC_OS_WINDOWS return generic_string(); #else return _path; #endif } #endif GHC_INLINE std::u16string path::generic_u16string() const { #ifdef GHC_OS_WINDOWS return generic_string(); #else return detail::fromUtf8(_path); #endif } GHC_INLINE std::u32string path::generic_u32string() const { #ifdef GHC_OS_WINDOWS return generic_string(); #else return detail::fromUtf8(_path); #endif } //----------------------------------------------------------------------------- // 30.10.8.4.8, compare GHC_INLINE int path::compare(const path& p) const noexcept { #ifdef LWG_2936_BEHAVIOUR auto rnl1 = root_name_length(); auto rnl2 = p.root_name_length(); #ifdef GHC_OS_WINDOWS auto rnc = detail::compare_simple_insensitive(_path.c_str(), rnl1, p._path.c_str(), rnl2); #else auto rnc = _path.compare(0, rnl1, p._path, 0, (std::min(rnl1, rnl2))); #endif if (rnc) { return rnc; } bool hrd1 = has_root_directory(), hrd2 = p.has_root_directory(); if (hrd1 != hrd2) { return hrd1 ? 1 : -1; } if (hrd1) { ++rnl1; ++rnl2; } auto iter1 = _path.begin() + static_cast(rnl1); auto iter2 = p._path.begin() + static_cast(rnl2); while (iter1 != _path.end() && iter2 != p._path.end() && *iter1 == *iter2) { ++iter1; ++iter2; } if (iter1 == _path.end()) { return iter2 == p._path.end() ? 0 : -1; } if (iter2 == p._path.end()) { return 1; } if (*iter1 == preferred_separator) { return -1; } if (*iter2 == preferred_separator) { return 1; } return *iter1 < *iter2 ? -1 : 1; #else // LWG_2936_BEHAVIOUR #ifdef GHC_OS_WINDOWS auto rnl1 = root_name_length(); auto rnl2 = p.root_name_length(); auto rnc = detail::compare_simple_insensitive(_path.c_str(), rnl1, p._path.c_str(), rnl2); if (rnc) { return rnc; } return _path.compare(rnl1, std::string::npos, p._path, rnl2, std::string::npos); #else return _path.compare(p._path); #endif #endif } GHC_INLINE int path::compare(const string_type& s) const { return compare(path(s)); } #ifdef GHC_WITH_STRING_VIEW GHC_INLINE int path::compare(basic_string_view s) const { return compare(path(s)); } #endif GHC_INLINE int path::compare(const value_type* s) const { return compare(path(s)); } //----------------------------------------------------------------------------- // 30.10.8.4.9, decomposition #ifdef GHC_OS_WINDOWS GHC_INLINE void path::handle_prefixes() { #if defined(GHC_WIN_AUTO_PREFIX_LONG_PATH) _prefixLength = 0; if (_path.length() >= 6 && _path[2] == '?' && std::toupper(static_cast(_path[4])) >= 'A' && std::toupper(static_cast(_path[4])) <= 'Z' && _path[5] == ':') { if (detail::startsWith(_path, impl_string_type(GHC_PLATFORM_LITERAL("\\\\?\\"))) || detail::startsWith(_path, impl_string_type(GHC_PLATFORM_LITERAL("\\??\\")))) { _prefixLength = 4; } } #endif // GHC_WIN_AUTO_PREFIX_LONG_PATH } #endif GHC_INLINE path::string_type::size_type path::root_name_length() const noexcept { #ifdef GHC_OS_WINDOWS if (_path.length() >= _prefixLength + 2 && std::toupper(static_cast(_path[_prefixLength])) >= 'A' && std::toupper(static_cast(_path[_prefixLength])) <= 'Z' && _path[_prefixLength + 1] == ':') { return 2; } #endif if (_path.length() > _prefixLength + 2 && _path[_prefixLength] == preferred_separator && _path[_prefixLength + 1] == preferred_separator && _path[_prefixLength + 2] != preferred_separator && std::isprint(_path[_prefixLength + 2])) { impl_string_type::size_type pos = _path.find(preferred_separator, _prefixLength + 3); if (pos == impl_string_type::npos) { return _path.length(); } else { return pos; } } return 0; } GHC_INLINE path path::root_name() const { return path(_path.substr(_prefixLength, root_name_length()), native_format); } GHC_INLINE path path::root_directory() const { if (has_root_directory()) { static const path _root_dir(std::string(1, preferred_separator), native_format); return _root_dir; } return path(); } GHC_INLINE path path::root_path() const { return path(root_name().string() + root_directory().string(), native_format); } GHC_INLINE path path::relative_path() const { auto rootPathLen = _prefixLength + root_name_length() + (has_root_directory() ? 1 : 0); return path(_path.substr((std::min)(rootPathLen, _path.length())), generic_format); } GHC_INLINE path path::parent_path() const { auto rootPathLen = _prefixLength + root_name_length() + (has_root_directory() ? 1 : 0); if (rootPathLen < _path.length()) { if (empty()) { return path(); } else { auto piter = end(); auto iter = piter.decrement(_path.end()); if (iter > _path.begin() + static_cast(rootPathLen) && *iter != preferred_separator) { --iter; } return path(_path.begin(), iter, native_format); } } else { return *this; } } GHC_INLINE path path::filename() const { return !has_relative_path() ? path() : path(*--end()); } GHC_INLINE path path::stem() const { impl_string_type fn = filename().native(); if (fn != "." && fn != "..") { impl_string_type::size_type pos = fn.rfind('.'); if (pos != impl_string_type::npos && pos > 0) { return path{fn.substr(0, pos), native_format}; } } return path{fn, native_format}; } GHC_INLINE path path::extension() const { if (has_relative_path()) { auto iter = end(); const auto& fn = *--iter; impl_string_type::size_type pos = fn._path.rfind('.'); if (pos != std::string::npos && pos > 0) { return path(fn._path.substr(pos), native_format); } } return path(); } #ifdef GHC_OS_WINDOWS namespace detail { GHC_INLINE bool has_executable_extension(const path& p) { if (p.has_relative_path()) { auto iter = p.end(); const auto& fn = *--iter; auto pos = fn._path.find_last_of('.'); if (pos == std::string::npos || pos == 0 || fn._path.length() - pos != 3) { return false; } const path::value_type* ext = fn._path.c_str() + pos + 1; if (detail::equals_simple_insensitive(ext, GHC_PLATFORM_LITERAL("exe")) || detail::equals_simple_insensitive(ext, GHC_PLATFORM_LITERAL("cmd")) || detail::equals_simple_insensitive(ext, GHC_PLATFORM_LITERAL("bat")) || detail::equals_simple_insensitive(ext, GHC_PLATFORM_LITERAL("com"))) { return true; } } return false; } } // namespace detail #endif //----------------------------------------------------------------------------- // 30.10.8.4.10, query GHC_INLINE bool path::empty() const noexcept { return _path.empty(); } GHC_INLINE bool path::has_root_name() const { return root_name_length() > 0; } GHC_INLINE bool path::has_root_directory() const { auto rootLen = _prefixLength + root_name_length(); return (_path.length() > rootLen && _path[rootLen] == preferred_separator); } GHC_INLINE bool path::has_root_path() const { return has_root_name() || has_root_directory(); } GHC_INLINE bool path::has_relative_path() const { auto rootPathLen = _prefixLength + root_name_length() + (has_root_directory() ? 1 : 0); return rootPathLen < _path.length(); } GHC_INLINE bool path::has_parent_path() const { return !parent_path().empty(); } GHC_INLINE bool path::has_filename() const { return has_relative_path() && !filename().empty(); } GHC_INLINE bool path::has_stem() const { return !stem().empty(); } GHC_INLINE bool path::has_extension() const { return !extension().empty(); } GHC_INLINE bool path::is_absolute() const { #ifdef GHC_OS_WINDOWS return has_root_name() && has_root_directory(); #else return has_root_directory(); #endif } GHC_INLINE bool path::is_relative() const { return !is_absolute(); } //----------------------------------------------------------------------------- // 30.10.8.4.11, generation GHC_INLINE path path::lexically_normal() const { path dest; bool lastDotDot = false; for (string_type s : *this) { if (s == ".") { dest /= ""; continue; } else if (s == ".." && !dest.empty()) { auto root = root_path(); if (dest == root) { continue; } else if (*(--dest.end()) != "..") { if (dest._path.back() == preferred_separator) { dest._path.pop_back(); } dest.remove_filename(); continue; } } if (!(s.empty() && lastDotDot)) { dest /= s; } lastDotDot = s == ".."; } if (dest.empty()) { dest = "."; } return dest; } GHC_INLINE path path::lexically_relative(const path& base) const { if (root_name() != base.root_name() || is_absolute() != base.is_absolute() || (!has_root_directory() && base.has_root_directory())) { return path(); } const_iterator a = begin(), b = base.begin(); while (a != end() && b != base.end() && *a == *b) { ++a; ++b; } if (a == end() && b == base.end()) { return path("."); } int count = 0; for (const auto& element : input_iterator_range(b, base.end())) { if (element != "." && element != "" && element != "..") { ++count; } else if (element == "..") { --count; } } if (count < 0) { return path(); } path result; for (int i = 0; i < count; ++i) { result /= ".."; } for (const auto& element : input_iterator_range(a, end())) { result /= element; } return result; } GHC_INLINE path path::lexically_proximate(const path& base) const { path result = lexically_relative(base); return result.empty() ? *this : result; } //----------------------------------------------------------------------------- // 30.10.8.5, iterators GHC_INLINE path::iterator::iterator() {} GHC_INLINE path::iterator::iterator(const path& p, const impl_string_type::const_iterator& pos) : _first(p._path.begin()) , _last(p._path.end()) , _prefix(_first + static_cast(p._prefixLength)) , _root(p.has_root_directory() ? _first + static_cast(p._prefixLength + p.root_name_length()) : _last) , _iter(pos) { if(pos != _last) { updateCurrent(); } } GHC_INLINE path::impl_string_type::const_iterator path::iterator::increment(const path::impl_string_type::const_iterator& pos) const { path::impl_string_type::const_iterator i = pos; bool fromStart = i == _first || i == _prefix; if (i != _last) { if (fromStart && i == _first && _prefix > _first) { i = _prefix; } else if (*i++ == preferred_separator) { // we can only sit on a slash if it is a network name or a root if (i != _last && *i == preferred_separator) { if (fromStart && !(i + 1 != _last && *(i + 1) == preferred_separator)) { // leadind double slashes detected, treat this and the // following until a slash as one unit i = std::find(++i, _last, preferred_separator); } else { // skip redundant slashes while (i != _last && *i == preferred_separator) { ++i; } } } } else { if (fromStart && i != _last && *i == ':') { ++i; } else { i = std::find(i, _last, preferred_separator); } } } return i; } GHC_INLINE path::impl_string_type::const_iterator path::iterator::decrement(const path::impl_string_type::const_iterator& pos) const { path::impl_string_type::const_iterator i = pos; if (i != _first) { --i; // if this is now the root slash or the trailing slash, we are done, // else check for network name if (i != _root && (pos != _last || *i != preferred_separator)) { #ifdef GHC_OS_WINDOWS static const impl_string_type seps = GHC_PLATFORM_LITERAL("\\:"); i = std::find_first_of(std::reverse_iterator(i), std::reverse_iterator(_first), seps.begin(), seps.end()).base(); if (i > _first && *i == ':') { i++; } #else i = std::find(std::reverse_iterator(i), std::reverse_iterator(_first), preferred_separator).base(); #endif // Now we have to check if this is a network name if (i - _first == 2 && *_first == preferred_separator && *(_first + 1) == preferred_separator) { i -= 2; } } } return i; } GHC_INLINE void path::iterator::updateCurrent() { if ((_iter == _last) || (_iter != _first && _iter != _last && (*_iter == preferred_separator && _iter != _root) && (_iter + 1 == _last))) { _current.clear(); } else { _current.assign(_iter, increment(_iter)); } } GHC_INLINE path::iterator& path::iterator::operator++() { _iter = increment(_iter); while (_iter != _last && // we didn't reach the end _iter != _root && // this is not a root position *_iter == preferred_separator && // we are on a separator (_iter + 1) != _last // the slash is not the last char ) { ++_iter; } updateCurrent(); return *this; } GHC_INLINE path::iterator path::iterator::operator++(int) { path::iterator i{*this}; ++(*this); return i; } GHC_INLINE path::iterator& path::iterator::operator--() { _iter = decrement(_iter); updateCurrent(); return *this; } GHC_INLINE path::iterator path::iterator::operator--(int) { auto i = *this; --(*this); return i; } GHC_INLINE bool path::iterator::operator==(const path::iterator& other) const { return _iter == other._iter; } GHC_INLINE bool path::iterator::operator!=(const path::iterator& other) const { return _iter != other._iter; } GHC_INLINE path::iterator::reference path::iterator::operator*() const { return _current; } GHC_INLINE path::iterator::pointer path::iterator::operator->() const { return &_current; } GHC_INLINE path::iterator path::begin() const { return iterator(*this, _path.begin()); } GHC_INLINE path::iterator path::end() const { return iterator(*this, _path.end()); } //----------------------------------------------------------------------------- // 30.10.8.6, path non-member functions GHC_INLINE void swap(path& lhs, path& rhs) noexcept { swap(lhs._path, rhs._path); } GHC_INLINE size_t hash_value(const path& p) noexcept { return std::hash()(p.generic_string()); } #ifdef GHC_HAS_THREEWAY_COMP GHC_INLINE std::strong_ordering operator<=>(const path& lhs, const path& rhs) noexcept { return lhs.compare(rhs) <=> 0; } #endif GHC_INLINE bool operator==(const path& lhs, const path& rhs) noexcept { return lhs.compare(rhs) == 0; } GHC_INLINE bool operator!=(const path& lhs, const path& rhs) noexcept { return !(lhs == rhs); } GHC_INLINE bool operator<(const path& lhs, const path& rhs) noexcept { return lhs.compare(rhs) < 0; } GHC_INLINE bool operator<=(const path& lhs, const path& rhs) noexcept { return lhs.compare(rhs) <= 0; } GHC_INLINE bool operator>(const path& lhs, const path& rhs) noexcept { return lhs.compare(rhs) > 0; } GHC_INLINE bool operator>=(const path& lhs, const path& rhs) noexcept { return lhs.compare(rhs) >= 0; } GHC_INLINE path operator/(const path& lhs, const path& rhs) { path result(lhs); result /= rhs; return result; } #endif // GHC_EXPAND_IMPL //----------------------------------------------------------------------------- // 30.10.8.6.1 path inserter and extractor template inline std::basic_ostream& operator<<(std::basic_ostream& os, const path& p) { os << "\""; auto ps = p.string(); for (auto c : ps) { if (c == '"' || c == '\\') { os << '\\'; } os << c; } os << "\""; return os; } template inline std::basic_istream& operator>>(std::basic_istream& is, path& p) { std::basic_string tmp; charT c; is >> c; if (c == '"') { auto sf = is.flags(); is >> std::noskipws; while (is) { auto c2 = is.get(); if (is) { if (c2 == '\\') { c2 = is.get(); if (is) { tmp += static_cast(c2); } } else if (c2 == '"') { break; } else { tmp += static_cast(c2); } } } if ((sf & std::ios_base::skipws) == std::ios_base::skipws) { is >> std::skipws; } p = path(tmp); } else { is >> tmp; p = path(static_cast(c) + tmp); } return is; } #ifdef GHC_EXPAND_IMPL //----------------------------------------------------------------------------- // 30.10.9 Class filesystem_error GHC_INLINE filesystem_error::filesystem_error(const std::string& what_arg, std::error_code ec) : std::system_error(ec, what_arg) , _what_arg(what_arg) , _ec(ec) { } GHC_INLINE filesystem_error::filesystem_error(const std::string& what_arg, const path& p1, std::error_code ec) : std::system_error(ec, what_arg) , _what_arg(what_arg) , _ec(ec) , _p1(p1) { if (!_p1.empty()) { _what_arg += ": '" + _p1.string() + "'"; } } GHC_INLINE filesystem_error::filesystem_error(const std::string& what_arg, const path& p1, const path& p2, std::error_code ec) : std::system_error(ec, what_arg) , _what_arg(what_arg) , _ec(ec) , _p1(p1) , _p2(p2) { if (!_p1.empty()) { _what_arg += ": '" + _p1.string() + "'"; } if (!_p2.empty()) { _what_arg += ", '" + _p2.string() + "'"; } } GHC_INLINE const path& filesystem_error::path1() const noexcept { return _p1; } GHC_INLINE const path& filesystem_error::path2() const noexcept { return _p2; } GHC_INLINE const char* filesystem_error::what() const noexcept { return _what_arg.c_str(); } //----------------------------------------------------------------------------- // 30.10.15, filesystem operations #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path absolute(const path& p) { std::error_code ec; path result = absolute(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE path absolute(const path& p, std::error_code& ec) { ec.clear(); #ifdef GHC_OS_WINDOWS if (p.empty()) { return absolute(current_path(ec), ec) / ""; } ULONG size = ::GetFullPathNameW(GHC_NATIVEWP(p), 0, 0, 0); if (size) { std::vector buf(size, 0); ULONG s2 = GetFullPathNameW(GHC_NATIVEWP(p), size, buf.data(), nullptr); if (s2 && s2 < size) { path result = path(std::wstring(buf.data(), s2)); if (p.filename() == ".") { result /= "."; } return result; } } ec = detail::make_system_error(); return path(); #else path base = current_path(ec); if (!ec) { if (p.empty()) { return base / p; } if (p.has_root_name()) { if (p.has_root_directory()) { return p; } else { return p.root_name() / base.root_directory() / base.relative_path() / p.relative_path(); } } else { if (p.has_root_directory()) { return base.root_name() / p; } else { return base / p; } } } ec = detail::make_system_error(); return path(); #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path canonical(const path& p) { std::error_code ec; auto result = canonical(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE path canonical(const path& p, std::error_code& ec) { if (p.empty()) { ec = detail::make_error_code(detail::portable_error::not_found); return path(); } path work = p.is_absolute() ? p : absolute(p, ec); path result; auto fs = status(work, ec); if (ec) { return path(); } if (fs.type() == file_type::not_found) { ec = detail::make_error_code(detail::portable_error::not_found); return path(); } bool redo; do { auto rootPathLen = work._prefixLength + work.root_name_length() + (work.has_root_directory() ? 1 : 0); redo = false; result.clear(); for (auto pe : work) { if (pe.empty() || pe == ".") { continue; } else if (pe == "..") { result = result.parent_path(); continue; } else if ((result / pe).string().length() <= rootPathLen) { result /= pe; continue; } auto sls = symlink_status(result / pe, ec); if (ec) { return path(); } if (is_symlink(sls)) { redo = true; auto target = read_symlink(result / pe, ec); if (ec) { return path(); } if (target.is_absolute()) { result = target; continue; } else { result /= target; continue; } } else { result /= pe; } } work = result; } while (redo); ec.clear(); return result; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void copy(const path& from, const path& to) { copy(from, to, copy_options::none); } GHC_INLINE void copy(const path& from, const path& to, copy_options options) { std::error_code ec; copy(from, to, options, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), from, to, ec); } } #endif GHC_INLINE void copy(const path& from, const path& to, std::error_code& ec) noexcept { copy(from, to, copy_options::none, ec); } GHC_INLINE void copy(const path& from, const path& to, copy_options options, std::error_code& ec) noexcept { std::error_code tec; file_status fs_from, fs_to; ec.clear(); if ((options & (copy_options::skip_symlinks | copy_options::copy_symlinks | copy_options::create_symlinks)) != copy_options::none) { fs_from = symlink_status(from, ec); } else { fs_from = status(from, ec); } if (!exists(fs_from)) { if (!ec) { ec = detail::make_error_code(detail::portable_error::not_found); } return; } if ((options & (copy_options::skip_symlinks | copy_options::create_symlinks)) != copy_options::none) { fs_to = symlink_status(to, tec); } else { fs_to = status(to, tec); } if (is_other(fs_from) || is_other(fs_to) || (is_directory(fs_from) && is_regular_file(fs_to)) || (exists(fs_to) && equivalent(from, to, ec))) { ec = detail::make_error_code(detail::portable_error::invalid_argument); } else if (is_symlink(fs_from)) { if ((options & copy_options::skip_symlinks) == copy_options::none) { if (!exists(fs_to) && (options & copy_options::copy_symlinks) != copy_options::none) { copy_symlink(from, to, ec); } else { ec = detail::make_error_code(detail::portable_error::invalid_argument); } } } else if (is_regular_file(fs_from)) { if ((options & copy_options::directories_only) == copy_options::none) { if ((options & copy_options::create_symlinks) != copy_options::none) { create_symlink(from.is_absolute() ? from : canonical(from, ec), to, ec); } #ifndef GHC_OS_WEB else if ((options & copy_options::create_hard_links) != copy_options::none) { create_hard_link(from, to, ec); } #endif else if (is_directory(fs_to)) { copy_file(from, to / from.filename(), options, ec); } else { copy_file(from, to, options, ec); } } } #ifdef LWG_2682_BEHAVIOUR else if (is_directory(fs_from) && (options & copy_options::create_symlinks) != copy_options::none) { ec = detail::make_error_code(detail::portable_error::is_a_directory); } #endif else if (is_directory(fs_from) && (options == copy_options::none || (options & copy_options::recursive) != copy_options::none)) { if (!exists(fs_to)) { create_directory(to, from, ec); if (ec) { return; } } for (auto iter = directory_iterator(from, ec); iter != directory_iterator(); iter.increment(ec)) { if (!ec) { copy(iter->path(), to / iter->path().filename(), options | static_cast(0x8000), ec); } if (ec) { return; } } } return; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool copy_file(const path& from, const path& to) { return copy_file(from, to, copy_options::none); } GHC_INLINE bool copy_file(const path& from, const path& to, copy_options option) { std::error_code ec; auto result = copy_file(from, to, option, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), from, to, ec); } return result; } #endif GHC_INLINE bool copy_file(const path& from, const path& to, std::error_code& ec) noexcept { return copy_file(from, to, copy_options::none, ec); } GHC_INLINE bool copy_file(const path& from, const path& to, copy_options options, std::error_code& ec) noexcept { std::error_code tecf, tect; auto sf = status(from, tecf); auto st = status(to, tect); bool overwrite = false; ec.clear(); if (!is_regular_file(sf)) { ec = tecf; return false; } if (exists(st) && (!is_regular_file(st) || equivalent(from, to, ec) || (options & (copy_options::skip_existing | copy_options::overwrite_existing | copy_options::update_existing)) == copy_options::none)) { ec = tect ? tect : detail::make_error_code(detail::portable_error::exists); return false; } if (exists(st)) { if ((options & copy_options::update_existing) == copy_options::update_existing) { auto from_time = last_write_time(from, ec); if (ec) { ec = detail::make_system_error(); return false; } auto to_time = last_write_time(to, ec); if (ec) { ec = detail::make_system_error(); return false; } if (from_time <= to_time) { return false; } } overwrite = true; } #ifdef GHC_OS_WINDOWS if (!::CopyFileW(GHC_NATIVEWP(from), GHC_NATIVEWP(to), !overwrite)) { ec = detail::make_system_error(); return false; } return true; #else std::vector buffer(16384, '\0'); int in = -1, out = -1; if ((in = ::open(from.c_str(), O_RDONLY)) < 0) { ec = detail::make_system_error(); return false; } int mode = O_CREAT | O_WRONLY | O_TRUNC; if (!overwrite) { mode |= O_EXCL; } if ((out = ::open(to.c_str(), mode, static_cast(sf.permissions() & perms::all))) < 0) { ec = detail::make_system_error(); ::close(in); return false; } ssize_t br, bw; while ((br = ::read(in, buffer.data(), buffer.size())) > 0) { ssize_t offset = 0; do { if ((bw = ::write(out, buffer.data() + offset, static_cast(br))) > 0) { br -= bw; offset += bw; } else if (bw < 0) { ec = detail::make_system_error(); ::close(in); ::close(out); return false; } } while (br); } ::close(in); ::close(out); return true; #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void copy_symlink(const path& existing_symlink, const path& new_symlink) { std::error_code ec; copy_symlink(existing_symlink, new_symlink, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), existing_symlink, new_symlink, ec); } } #endif GHC_INLINE void copy_symlink(const path& existing_symlink, const path& new_symlink, std::error_code& ec) noexcept { ec.clear(); auto to = read_symlink(existing_symlink, ec); if (!ec) { if (exists(to, ec) && is_directory(to, ec)) { create_directory_symlink(to, new_symlink, ec); } else { create_symlink(to, new_symlink, ec); } } } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool create_directories(const path& p) { std::error_code ec; auto result = create_directories(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE bool create_directories(const path& p, std::error_code& ec) noexcept { path current; ec.clear(); bool didCreate = false; for (path::string_type part : p) { current /= part; if (current != p.root_name() && current != p.root_path()) { std::error_code tec; auto fs = status(current, tec); if (tec && fs.type() != file_type::not_found) { ec = tec; return false; } if (!exists(fs)) { create_directory(current, ec); if (ec) { std::error_code tmp_ec; if (is_directory(current, tmp_ec)) { ec.clear(); } else { return false; } } didCreate = true; } #ifndef LWG_2935_BEHAVIOUR else if (!is_directory(fs)) { ec = detail::make_error_code(detail::portable_error::exists); return false; } #endif } } return didCreate; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool create_directory(const path& p) { std::error_code ec; auto result = create_directory(p, path(), ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE bool create_directory(const path& p, std::error_code& ec) noexcept { return create_directory(p, path(), ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool create_directory(const path& p, const path& attributes) { std::error_code ec; auto result = create_directory(p, attributes, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE bool create_directory(const path& p, const path& attributes, std::error_code& ec) noexcept { std::error_code tec; ec.clear(); auto fs = status(p, tec); #ifdef LWG_2935_BEHAVIOUR if (status_known(fs) && exists(fs)) { return false; } #else if (status_known(fs) && exists(fs) && is_directory(fs)) { return false; } #endif #ifdef GHC_OS_WINDOWS if (!attributes.empty()) { if (!::CreateDirectoryExW(GHC_NATIVEWP(attributes), GHC_NATIVEWP(p), NULL)) { ec = detail::make_system_error(); return false; } } else if (!::CreateDirectoryW(GHC_NATIVEWP(p), NULL)) { ec = detail::make_system_error(); return false; } #else ::mode_t attribs = static_cast(perms::all); if (!attributes.empty()) { struct ::stat fileStat; if (::stat(attributes.c_str(), &fileStat) != 0) { ec = detail::make_system_error(); return false; } attribs = fileStat.st_mode; } if (::mkdir(p.c_str(), attribs) != 0) { ec = detail::make_system_error(); return false; } #endif return true; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void create_directory_symlink(const path& to, const path& new_symlink) { std::error_code ec; create_directory_symlink(to, new_symlink, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), to, new_symlink, ec); } } #endif GHC_INLINE void create_directory_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept { detail::create_symlink(to, new_symlink, true, ec); } #ifndef GHC_OS_WEB #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void create_hard_link(const path& to, const path& new_hard_link) { std::error_code ec; create_hard_link(to, new_hard_link, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), to, new_hard_link, ec); } } #endif GHC_INLINE void create_hard_link(const path& to, const path& new_hard_link, std::error_code& ec) noexcept { detail::create_hardlink(to, new_hard_link, ec); } #endif #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void create_symlink(const path& to, const path& new_symlink) { std::error_code ec; create_symlink(to, new_symlink, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), to, new_symlink, ec); } } #endif GHC_INLINE void create_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept { detail::create_symlink(to, new_symlink, false, ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path current_path() { std::error_code ec; auto result = current_path(ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), ec); } return result; } #endif GHC_INLINE path current_path(std::error_code& ec) { ec.clear(); #ifdef GHC_OS_WINDOWS DWORD pathlen = ::GetCurrentDirectoryW(0, 0); std::unique_ptr buffer(new wchar_t[size_t(pathlen) + 1]); if (::GetCurrentDirectoryW(pathlen, buffer.get()) == 0) { ec = detail::make_system_error(); return path(); } return path(std::wstring(buffer.get()), path::native_format); #else size_t pathlen = static_cast(std::max(int(::pathconf(".", _PC_PATH_MAX)), int(PATH_MAX))); std::unique_ptr buffer(new char[pathlen + 1]); if (::getcwd(buffer.get(), pathlen) == nullptr) { ec = detail::make_system_error(); return path(); } return path(buffer.get()); #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void current_path(const path& p) { std::error_code ec; current_path(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } } #endif GHC_INLINE void current_path(const path& p, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS if (!::SetCurrentDirectoryW(GHC_NATIVEWP(p))) { ec = detail::make_system_error(); } #else if (::chdir(p.string().c_str()) == -1) { ec = detail::make_system_error(); } #endif } GHC_INLINE bool exists(file_status s) noexcept { return status_known(s) && s.type() != file_type::not_found; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool exists(const path& p) { return exists(status(p)); } #endif GHC_INLINE bool exists(const path& p, std::error_code& ec) noexcept { file_status s = status(p, ec); if (status_known(s)) { ec.clear(); } return exists(s); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool equivalent(const path& p1, const path& p2) { std::error_code ec; bool result = equivalent(p1, p2, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p1, p2, ec); } return result; } #endif GHC_INLINE bool equivalent(const path& p1, const path& p2, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS std::shared_ptr file1(::CreateFileW(GHC_NATIVEWP(p1), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); auto e1 = ::GetLastError(); std::shared_ptr file2(::CreateFileW(GHC_NATIVEWP(p2), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); if (file1.get() == INVALID_HANDLE_VALUE || file2.get() == INVALID_HANDLE_VALUE) { #ifdef LWG_2937_BEHAVIOUR ec = detail::make_system_error(e1 ? e1 : ::GetLastError()); #else if (file1 == file2) { ec = detail::make_system_error(e1 ? e1 : ::GetLastError()); } #endif return false; } BY_HANDLE_FILE_INFORMATION inf1, inf2; if (!::GetFileInformationByHandle(file1.get(), &inf1)) { ec = detail::make_system_error(); return false; } if (!::GetFileInformationByHandle(file2.get(), &inf2)) { ec = detail::make_system_error(); return false; } return inf1.ftLastWriteTime.dwLowDateTime == inf2.ftLastWriteTime.dwLowDateTime && inf1.ftLastWriteTime.dwHighDateTime == inf2.ftLastWriteTime.dwHighDateTime && inf1.nFileIndexHigh == inf2.nFileIndexHigh && inf1.nFileIndexLow == inf2.nFileIndexLow && inf1.nFileSizeHigh == inf2.nFileSizeHigh && inf1.nFileSizeLow == inf2.nFileSizeLow && inf1.dwVolumeSerialNumber == inf2.dwVolumeSerialNumber; #else struct ::stat s1, s2; auto rc1 = ::stat(p1.c_str(), &s1); auto e1 = errno; auto rc2 = ::stat(p2.c_str(), &s2); if (rc1 || rc2) { #ifdef LWG_2937_BEHAVIOUR ec = detail::make_system_error(e1 ? e1 : errno); #else if (rc1 && rc2) { ec = detail::make_system_error(e1 ? e1 : errno); } #endif return false; } return s1.st_dev == s2.st_dev && s1.st_ino == s2.st_ino && s1.st_size == s2.st_size && s1.st_mtime == s2.st_mtime; #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE uintmax_t file_size(const path& p) { std::error_code ec; auto result = file_size(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE uintmax_t file_size(const path& p, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS WIN32_FILE_ATTRIBUTE_DATA attr; if (!GetFileAttributesExW(GHC_NATIVEWP(p), GetFileExInfoStandard, &attr)) { ec = detail::make_system_error(); return static_cast(-1); } return static_cast(attr.nFileSizeHigh) << (sizeof(attr.nFileSizeHigh) * 8) | attr.nFileSizeLow; #else struct ::stat fileStat; if (::stat(p.c_str(), &fileStat) == -1) { ec = detail::make_system_error(); return static_cast(-1); } return static_cast(fileStat.st_size); #endif } #ifndef GHC_OS_WEB #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE uintmax_t hard_link_count(const path& p) { std::error_code ec; auto result = hard_link_count(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE uintmax_t hard_link_count(const path& p, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS uintmax_t result = static_cast(-1); std::shared_ptr file(::CreateFileW(GHC_NATIVEWP(p), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); BY_HANDLE_FILE_INFORMATION inf; if (file.get() == INVALID_HANDLE_VALUE) { ec = detail::make_system_error(); } else { if (!::GetFileInformationByHandle(file.get(), &inf)) { ec = detail::make_system_error(); } else { result = inf.nNumberOfLinks; } } return result; #else uintmax_t result = 0; file_status fs = detail::status_ex(p, ec, nullptr, nullptr, &result, nullptr); if (fs.type() == file_type::not_found) { ec = detail::make_error_code(detail::portable_error::not_found); } return ec ? static_cast(-1) : result; #endif } #endif GHC_INLINE bool is_block_file(file_status s) noexcept { return s.type() == file_type::block; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_block_file(const path& p) { return is_block_file(status(p)); } #endif GHC_INLINE bool is_block_file(const path& p, std::error_code& ec) noexcept { return is_block_file(status(p, ec)); } GHC_INLINE bool is_character_file(file_status s) noexcept { return s.type() == file_type::character; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_character_file(const path& p) { return is_character_file(status(p)); } #endif GHC_INLINE bool is_character_file(const path& p, std::error_code& ec) noexcept { return is_character_file(status(p, ec)); } GHC_INLINE bool is_directory(file_status s) noexcept { return s.type() == file_type::directory; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_directory(const path& p) { return is_directory(status(p)); } #endif GHC_INLINE bool is_directory(const path& p, std::error_code& ec) noexcept { return is_directory(status(p, ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_empty(const path& p) { if (is_directory(p)) { return directory_iterator(p) == directory_iterator(); } else { return file_size(p) == 0; } } #endif GHC_INLINE bool is_empty(const path& p, std::error_code& ec) noexcept { auto fs = status(p, ec); if (ec) { return false; } if (is_directory(fs)) { directory_iterator iter(p, ec); if (ec) { return false; } return iter == directory_iterator(); } else { auto sz = file_size(p, ec); if (ec) { return false; } return sz == 0; } } GHC_INLINE bool is_fifo(file_status s) noexcept { return s.type() == file_type::fifo; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_fifo(const path& p) { return is_fifo(status(p)); } #endif GHC_INLINE bool is_fifo(const path& p, std::error_code& ec) noexcept { return is_fifo(status(p, ec)); } GHC_INLINE bool is_other(file_status s) noexcept { return exists(s) && !is_regular_file(s) && !is_directory(s) && !is_symlink(s); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_other(const path& p) { return is_other(status(p)); } #endif GHC_INLINE bool is_other(const path& p, std::error_code& ec) noexcept { return is_other(status(p, ec)); } GHC_INLINE bool is_regular_file(file_status s) noexcept { return s.type() == file_type::regular; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_regular_file(const path& p) { return is_regular_file(status(p)); } #endif GHC_INLINE bool is_regular_file(const path& p, std::error_code& ec) noexcept { return is_regular_file(status(p, ec)); } GHC_INLINE bool is_socket(file_status s) noexcept { return s.type() == file_type::socket; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_socket(const path& p) { return is_socket(status(p)); } #endif GHC_INLINE bool is_socket(const path& p, std::error_code& ec) noexcept { return is_socket(status(p, ec)); } GHC_INLINE bool is_symlink(file_status s) noexcept { return s.type() == file_type::symlink; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool is_symlink(const path& p) { return is_symlink(symlink_status(p)); } #endif GHC_INLINE bool is_symlink(const path& p, std::error_code& ec) noexcept { return is_symlink(symlink_status(p, ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE file_time_type last_write_time(const path& p) { std::error_code ec; auto result = last_write_time(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE file_time_type last_write_time(const path& p, std::error_code& ec) noexcept { time_t result = 0; ec.clear(); file_status fs = detail::status_ex(p, ec, nullptr, nullptr, nullptr, &result); return ec ? (file_time_type::min)() : std::chrono::system_clock::from_time_t(result); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void last_write_time(const path& p, file_time_type new_time) { std::error_code ec; last_write_time(p, new_time, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } } #endif GHC_INLINE void last_write_time(const path& p, file_time_type new_time, std::error_code& ec) noexcept { ec.clear(); auto d = new_time.time_since_epoch(); #ifdef GHC_OS_WINDOWS std::shared_ptr file(::CreateFileW(GHC_NATIVEWP(p), FILE_WRITE_ATTRIBUTES, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL), ::CloseHandle); FILETIME ft; auto tt = std::chrono::duration_cast(d).count() * 10 + 116444736000000000; ft.dwLowDateTime = static_cast(tt); ft.dwHighDateTime = static_cast(tt >> 32); if (!::SetFileTime(file.get(), 0, 0, &ft)) { ec = detail::make_system_error(); } #elif defined(GHC_OS_MACOS) #ifdef __MAC_OS_X_VERSION_MIN_REQUIRED #if __MAC_OS_X_VERSION_MIN_REQUIRED < 101300 struct ::stat fs; if (::stat(p.c_str(), &fs) == 0) { struct ::timeval tv[2]; tv[0].tv_sec = fs.st_atimespec.tv_sec; tv[0].tv_usec = static_cast(fs.st_atimespec.tv_nsec / 1000); tv[1].tv_sec = std::chrono::duration_cast(d).count(); tv[1].tv_usec = static_cast(std::chrono::duration_cast(d).count() % 1000000); if (::utimes(p.c_str(), tv) == 0) { return; } } ec = detail::make_system_error(); return; #else struct ::timespec times[2]; times[0].tv_sec = 0; times[0].tv_nsec = UTIME_OMIT; times[1].tv_sec = std::chrono::duration_cast(d).count(); times[1].tv_nsec = 0; // std::chrono::duration_cast(d).count() % 1000000000; if (::utimensat(AT_FDCWD, p.c_str(), times, AT_SYMLINK_NOFOLLOW) != 0) { ec = detail::make_system_error(); } return; #endif #endif #else #ifndef UTIME_OMIT #define UTIME_OMIT ((1l << 30) - 2l) #endif struct ::timespec times[2]; times[0].tv_sec = 0; times[0].tv_nsec = UTIME_OMIT; times[1].tv_sec = static_cast(std::chrono::duration_cast(d).count()); times[1].tv_nsec = static_cast(std::chrono::duration_cast(d).count() % 1000000000); #if defined(__ANDROID_API__) && __ANDROID_API__ < 12 if (syscall(__NR_utimensat, AT_FDCWD, p.c_str(), times, AT_SYMLINK_NOFOLLOW) != 0) { #else if (::utimensat(AT_FDCWD, p.c_str(), times, AT_SYMLINK_NOFOLLOW) != 0) { #endif ec = detail::make_system_error(); } return; #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void permissions(const path& p, perms prms, perm_options opts) { std::error_code ec; permissions(p, prms, opts, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } } #endif GHC_INLINE void permissions(const path& p, perms prms, std::error_code& ec) noexcept { permissions(p, prms, perm_options::replace, ec); } GHC_INLINE void permissions(const path& p, perms prms, perm_options opts, std::error_code& ec) noexcept { if (static_cast(opts & (perm_options::replace | perm_options::add | perm_options::remove)) == 0) { ec = detail::make_error_code(detail::portable_error::invalid_argument); return; } auto fs = symlink_status(p, ec); if ((opts & perm_options::replace) != perm_options::replace) { if ((opts & perm_options::add) == perm_options::add) { prms = fs.permissions() | prms; } else { prms = fs.permissions() & ~prms; } } #ifdef GHC_OS_WINDOWS #ifdef __GNUC__ auto oldAttr = GetFileAttributesW(GHC_NATIVEWP(p)); if (oldAttr != INVALID_FILE_ATTRIBUTES) { DWORD newAttr = ((prms & perms::owner_write) == perms::owner_write) ? oldAttr & ~(static_cast(FILE_ATTRIBUTE_READONLY)) : oldAttr | FILE_ATTRIBUTE_READONLY; if (oldAttr == newAttr || SetFileAttributesW(GHC_NATIVEWP(p), newAttr)) { return; } } ec = detail::make_system_error(); #else int mode = 0; if ((prms & perms::owner_read) == perms::owner_read) { mode |= _S_IREAD; } if ((prms & perms::owner_write) == perms::owner_write) { mode |= _S_IWRITE; } if (::_wchmod(p.wstring().c_str(), mode) != 0) { ec = detail::make_system_error(); } #endif #else if ((opts & perm_options::nofollow) != perm_options::nofollow) { if (::chmod(p.c_str(), static_cast(prms)) != 0) { ec = detail::make_system_error(); } } #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path proximate(const path& p, std::error_code& ec) { auto cp = current_path(ec); if (!ec) { return proximate(p, cp, ec); } return path(); } #endif #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path proximate(const path& p, const path& base) { return weakly_canonical(p).lexically_proximate(weakly_canonical(base)); } #endif GHC_INLINE path proximate(const path& p, const path& base, std::error_code& ec) { return weakly_canonical(p, ec).lexically_proximate(weakly_canonical(base, ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path read_symlink(const path& p) { std::error_code ec; auto result = read_symlink(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE path read_symlink(const path& p, std::error_code& ec) { file_status fs = symlink_status(p, ec); if (fs.type() != file_type::symlink) { ec = detail::make_error_code(detail::portable_error::invalid_argument); return path(); } auto result = detail::resolveSymlink(p, ec); return ec ? path() : result; } GHC_INLINE path relative(const path& p, std::error_code& ec) { return relative(p, current_path(ec), ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path relative(const path& p, const path& base) { return weakly_canonical(p).lexically_relative(weakly_canonical(base)); } #endif GHC_INLINE path relative(const path& p, const path& base, std::error_code& ec) { return weakly_canonical(p, ec).lexically_relative(weakly_canonical(base, ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool remove(const path& p) { std::error_code ec; auto result = remove(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE bool remove(const path& p, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS #ifdef GHC_USE_WCHAR_T auto cstr = p.c_str(); #else std::wstring np = detail::fromUtf8(p.u8string()); auto cstr = np.c_str(); #endif DWORD attr = GetFileAttributesW(cstr); if (attr == INVALID_FILE_ATTRIBUTES) { auto error = ::GetLastError(); if (error == ERROR_FILE_NOT_FOUND || error == ERROR_PATH_NOT_FOUND) { return false; } ec = detail::make_system_error(error); } if (!ec) { if (attr & FILE_ATTRIBUTE_DIRECTORY) { if (!RemoveDirectoryW(cstr)) { ec = detail::make_system_error(); } } else { if (!DeleteFileW(cstr)) { ec = detail::make_system_error(); } } } #else if (::remove(p.c_str()) == -1) { auto error = errno; if (error == ENOENT) { return false; } ec = detail::make_system_error(); } #endif return ec ? false : true; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE uintmax_t remove_all(const path& p) { std::error_code ec; auto result = remove_all(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE uintmax_t remove_all(const path& p, std::error_code& ec) noexcept { ec.clear(); uintmax_t count = 0; if (p == "/") { ec = detail::make_error_code(detail::portable_error::not_supported); return static_cast(-1); } std::error_code tec; auto fs = status(p, tec); if (exists(fs) && is_directory(fs)) { for (auto iter = directory_iterator(p, ec); iter != directory_iterator(); iter.increment(ec)) { if (ec) { break; } bool is_symlink_result = iter->is_symlink(ec); if (ec) return static_cast(-1); bool is_directory_result = iter->is_directory(ec); if (ec) return static_cast(-1); if (!is_symlink_result && is_directory_result) { count += remove_all(iter->path(), ec); if (ec) { return static_cast(-1); } } else { remove(iter->path(), ec); if (ec) { return static_cast(-1); } ++count; } } } if (!ec) { if (remove(p, ec)) { ++count; } } if (ec) { return static_cast(-1); } return count; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void rename(const path& from, const path& to) { std::error_code ec; rename(from, to, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), from, to, ec); } } #endif GHC_INLINE void rename(const path& from, const path& to, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS if (from != to) { if (!MoveFileExW(GHC_NATIVEWP(from), GHC_NATIVEWP(to), (DWORD)MOVEFILE_REPLACE_EXISTING)) { ec = detail::make_system_error(); } } #else if (from != to) { if (::rename(from.c_str(), to.c_str()) != 0) { ec = detail::make_system_error(); } } #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void resize_file(const path& p, uintmax_t size) { std::error_code ec; resize_file(p, size, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } } #endif GHC_INLINE void resize_file(const path& p, uintmax_t size, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS LARGE_INTEGER lisize; lisize.QuadPart = static_cast(size); if (lisize.QuadPart < 0) { #ifdef ERROR_FILE_TOO_LARGE ec = detail::make_system_error(ERROR_FILE_TOO_LARGE); #else ec = detail::make_system_error(223); #endif return; } std::shared_ptr file(CreateFileW(GHC_NATIVEWP(p), GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL), CloseHandle); if (file.get() == INVALID_HANDLE_VALUE) { ec = detail::make_system_error(); } else if (SetFilePointerEx(file.get(), lisize, NULL, FILE_BEGIN) == 0 || SetEndOfFile(file.get()) == 0) { ec = detail::make_system_error(); } #else if (::truncate(p.c_str(), static_cast(size)) != 0) { ec = detail::make_system_error(); } #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE space_info space(const path& p) { std::error_code ec; auto result = space(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE space_info space(const path& p, std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS ULARGE_INTEGER freeBytesAvailableToCaller = {{ 0, 0 }}; ULARGE_INTEGER totalNumberOfBytes = {{ 0, 0 }}; ULARGE_INTEGER totalNumberOfFreeBytes = {{ 0, 0 }}; if (!GetDiskFreeSpaceExW(GHC_NATIVEWP(p), &freeBytesAvailableToCaller, &totalNumberOfBytes, &totalNumberOfFreeBytes)) { ec = detail::make_system_error(); return {static_cast(-1), static_cast(-1), static_cast(-1)}; } return {static_cast(totalNumberOfBytes.QuadPart), static_cast(totalNumberOfFreeBytes.QuadPart), static_cast(freeBytesAvailableToCaller.QuadPart)}; #else struct ::statvfs sfs; if (::statvfs(p.c_str(), &sfs) != 0) { ec = detail::make_system_error(); return {static_cast(-1), static_cast(-1), static_cast(-1)}; } return {static_cast(sfs.f_blocks * sfs.f_frsize), static_cast(sfs.f_bfree * sfs.f_frsize), static_cast(sfs.f_bavail * sfs.f_frsize)}; #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE file_status status(const path& p) { std::error_code ec; auto result = status(p, ec); if (result.type() == file_type::none) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE file_status status(const path& p, std::error_code& ec) noexcept { return detail::status_ex(p, ec); } GHC_INLINE bool status_known(file_status s) noexcept { return s.type() != file_type::none; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE file_status symlink_status(const path& p) { std::error_code ec; auto result = symlink_status(p, ec); if (result.type() == file_type::none) { throw filesystem_error(detail::systemErrorText(ec.value()), ec); } return result; } #endif GHC_INLINE file_status symlink_status(const path& p, std::error_code& ec) noexcept { return detail::symlink_status_ex(p, ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path temp_directory_path() { std::error_code ec; path result = temp_directory_path(ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), ec); } return result; } #endif GHC_INLINE path temp_directory_path(std::error_code& ec) noexcept { ec.clear(); #ifdef GHC_OS_WINDOWS wchar_t buffer[512]; auto rc = GetTempPathW(511, buffer); if (!rc || rc > 511) { ec = detail::make_system_error(); return path(); } return path(std::wstring(buffer)); #else static const char* temp_vars[] = {"TMPDIR", "TMP", "TEMP", "TEMPDIR", nullptr}; const char* temp_path = nullptr; for (auto temp_name = temp_vars; *temp_name != nullptr; ++temp_name) { temp_path = std::getenv(*temp_name); if (temp_path) { return path(temp_path); } } return path("/tmp"); #endif } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE path weakly_canonical(const path& p) { std::error_code ec; auto result = weakly_canonical(p, ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); } return result; } #endif GHC_INLINE path weakly_canonical(const path& p, std::error_code& ec) noexcept { path result; ec.clear(); bool scan = true; for (auto pe : p) { if (scan) { std::error_code tec; if (exists(result / pe, tec)) { result /= pe; } else { if (ec) { return path(); } scan = false; if (!result.empty()) { result = canonical(result, ec) / pe; if (ec) { break; } } else { result /= pe; } } } else { result /= pe; } } if (scan) { if (!result.empty()) { result = canonical(result, ec); } } return ec ? path() : result.lexically_normal(); } //----------------------------------------------------------------------------- // 30.10.11 class file_status // 30.10.11.1 constructors and destructor GHC_INLINE file_status::file_status() noexcept : file_status(file_type::none) { } GHC_INLINE file_status::file_status(file_type ft, perms prms) noexcept : _type(ft) , _perms(prms) { } GHC_INLINE file_status::file_status(const file_status& other) noexcept : _type(other._type) , _perms(other._perms) { } GHC_INLINE file_status::file_status(file_status&& other) noexcept : _type(other._type) , _perms(other._perms) { } GHC_INLINE file_status::~file_status() {} // assignments: GHC_INLINE file_status& file_status::operator=(const file_status& rhs) noexcept { _type = rhs._type; _perms = rhs._perms; return *this; } GHC_INLINE file_status& file_status::operator=(file_status&& rhs) noexcept { _type = rhs._type; _perms = rhs._perms; return *this; } // 30.10.11.3 modifiers GHC_INLINE void file_status::type(file_type ft) noexcept { _type = ft; } GHC_INLINE void file_status::permissions(perms prms) noexcept { _perms = prms; } // 30.10.11.2 observers GHC_INLINE file_type file_status::type() const noexcept { return _type; } GHC_INLINE perms file_status::permissions() const noexcept { return _perms; } //----------------------------------------------------------------------------- // 30.10.12 class directory_entry // 30.10.12.1 constructors and destructor // directory_entry::directory_entry() noexcept = default; // directory_entry::directory_entry(const directory_entry&) = default; // directory_entry::directory_entry(directory_entry&&) noexcept = default; #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE directory_entry::directory_entry(const filesystem::path& p) : _path(p) , _file_size(0) #ifndef GHC_OS_WINDOWS , _hard_link_count(0) #endif , _last_write_time(0) { refresh(); } #endif GHC_INLINE directory_entry::directory_entry(const filesystem::path& p, std::error_code& ec) : _path(p) , _file_size(0) #ifndef GHC_OS_WINDOWS , _hard_link_count(0) #endif , _last_write_time(0) { refresh(ec); } GHC_INLINE directory_entry::~directory_entry() {} // assignments: // directory_entry& directory_entry::operator=(const directory_entry&) = default; // directory_entry& directory_entry::operator=(directory_entry&&) noexcept = default; // 30.10.12.2 directory_entry modifiers #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void directory_entry::assign(const filesystem::path& p) { _path = p; refresh(); } #endif GHC_INLINE void directory_entry::assign(const filesystem::path& p, std::error_code& ec) { _path = p; refresh(ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void directory_entry::replace_filename(const filesystem::path& p) { _path.replace_filename(p); refresh(); } #endif GHC_INLINE void directory_entry::replace_filename(const filesystem::path& p, std::error_code& ec) { _path.replace_filename(p); refresh(ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void directory_entry::refresh() { std::error_code ec; refresh(ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), _path, ec); } } #endif GHC_INLINE void directory_entry::refresh(std::error_code& ec) noexcept { #ifdef GHC_OS_WINDOWS _status = detail::status_ex(_path, ec, &_symlink_status, &_file_size, nullptr, &_last_write_time); #else _status = detail::status_ex(_path, ec, &_symlink_status, &_file_size, &_hard_link_count, &_last_write_time); #endif } // 30.10.12.3 directory_entry observers GHC_INLINE const filesystem::path& directory_entry::path() const noexcept { return _path; } GHC_INLINE directory_entry::operator const filesystem::path&() const noexcept { return _path; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::exists() const { return filesystem::exists(status()); } #endif GHC_INLINE bool directory_entry::exists(std::error_code& ec) const noexcept { return filesystem::exists(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_block_file() const { return filesystem::is_block_file(status()); } #endif GHC_INLINE bool directory_entry::is_block_file(std::error_code& ec) const noexcept { return filesystem::is_block_file(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_character_file() const { return filesystem::is_character_file(status()); } #endif GHC_INLINE bool directory_entry::is_character_file(std::error_code& ec) const noexcept { return filesystem::is_character_file(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_directory() const { return filesystem::is_directory(status()); } #endif GHC_INLINE bool directory_entry::is_directory(std::error_code& ec) const noexcept { return filesystem::is_directory(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_fifo() const { return filesystem::is_fifo(status()); } #endif GHC_INLINE bool directory_entry::is_fifo(std::error_code& ec) const noexcept { return filesystem::is_fifo(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_other() const { return filesystem::is_other(status()); } #endif GHC_INLINE bool directory_entry::is_other(std::error_code& ec) const noexcept { return filesystem::is_other(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_regular_file() const { return filesystem::is_regular_file(status()); } #endif GHC_INLINE bool directory_entry::is_regular_file(std::error_code& ec) const noexcept { return filesystem::is_regular_file(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_socket() const { return filesystem::is_socket(status()); } #endif GHC_INLINE bool directory_entry::is_socket(std::error_code& ec) const noexcept { return filesystem::is_socket(status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE bool directory_entry::is_symlink() const { return filesystem::is_symlink(symlink_status()); } #endif GHC_INLINE bool directory_entry::is_symlink(std::error_code& ec) const noexcept { return filesystem::is_symlink(symlink_status(ec)); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE uintmax_t directory_entry::file_size() const { if (_status.type() != file_type::none) { return _file_size; } return filesystem::file_size(path()); } #endif GHC_INLINE uintmax_t directory_entry::file_size(std::error_code& ec) const noexcept { if (_status.type() != file_type::none) { ec.clear(); return _file_size; } return filesystem::file_size(path(), ec); } #ifndef GHC_OS_WEB #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE uintmax_t directory_entry::hard_link_count() const { #ifndef GHC_OS_WINDOWS if (_status.type() != file_type::none) { return _hard_link_count; } #endif return filesystem::hard_link_count(path()); } #endif GHC_INLINE uintmax_t directory_entry::hard_link_count(std::error_code& ec) const noexcept { #ifndef GHC_OS_WINDOWS if (_status.type() != file_type::none) { ec.clear(); return _hard_link_count; } #endif return filesystem::hard_link_count(path(), ec); } #endif #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE file_time_type directory_entry::last_write_time() const { if (_status.type() != file_type::none) { return std::chrono::system_clock::from_time_t(_last_write_time); } return filesystem::last_write_time(path()); } #endif GHC_INLINE file_time_type directory_entry::last_write_time(std::error_code& ec) const noexcept { if (_status.type() != file_type::none) { ec.clear(); return std::chrono::system_clock::from_time_t(_last_write_time); } return filesystem::last_write_time(path(), ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE file_status directory_entry::status() const { if (_status.type() != file_type::none) { return _status; } return filesystem::status(path()); } #endif GHC_INLINE file_status directory_entry::status(std::error_code& ec) const noexcept { if (_status.type() != file_type::none) { ec.clear(); return _status; } return filesystem::status(path(), ec); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE file_status directory_entry::symlink_status() const { if (_symlink_status.type() != file_type::none) { return _symlink_status; } return filesystem::symlink_status(path()); } #endif GHC_INLINE file_status directory_entry::symlink_status(std::error_code& ec) const noexcept { if (_symlink_status.type() != file_type::none) { ec.clear(); return _symlink_status; } return filesystem::symlink_status(path(), ec); } #ifdef GHC_HAS_THREEWAY_COMP GHC_INLINE std::strong_ordering directory_entry::operator<=>(const directory_entry& rhs) const noexcept { return _path <=> rhs._path; } #endif GHC_INLINE bool directory_entry::operator<(const directory_entry& rhs) const noexcept { return _path < rhs._path; } GHC_INLINE bool directory_entry::operator==(const directory_entry& rhs) const noexcept { return _path == rhs._path; } GHC_INLINE bool directory_entry::operator!=(const directory_entry& rhs) const noexcept { return _path != rhs._path; } GHC_INLINE bool directory_entry::operator<=(const directory_entry& rhs) const noexcept { return _path <= rhs._path; } GHC_INLINE bool directory_entry::operator>(const directory_entry& rhs) const noexcept { return _path > rhs._path; } GHC_INLINE bool directory_entry::operator>=(const directory_entry& rhs) const noexcept { return _path >= rhs._path; } //----------------------------------------------------------------------------- // 30.10.13 class directory_iterator #ifdef GHC_OS_WINDOWS class directory_iterator::impl { public: impl(const path& p, directory_options options) : _base(p) , _options(options) , _dirHandle(INVALID_HANDLE_VALUE) { if (!_base.empty()) { ZeroMemory(&_findData, sizeof(WIN32_FIND_DATAW)); if ((_dirHandle = FindFirstFileW(GHC_NATIVEWP((_base / "*")), &_findData)) != INVALID_HANDLE_VALUE) { if (std::wstring(_findData.cFileName) == L"." || std::wstring(_findData.cFileName) == L"..") { increment(_ec); } else { _current = _base / std::wstring(_findData.cFileName); copyToDirEntry(_ec); } } else { auto error = ::GetLastError(); _base = filesystem::path(); if (error != ERROR_ACCESS_DENIED || (options & directory_options::skip_permission_denied) == directory_options::none) { _ec = detail::make_system_error(); } } } } impl(const impl& other) = delete; ~impl() { if (_dirHandle != INVALID_HANDLE_VALUE) { FindClose(_dirHandle); _dirHandle = INVALID_HANDLE_VALUE; } } void increment(std::error_code& ec) { if (_dirHandle != INVALID_HANDLE_VALUE) { do { if (FindNextFileW(_dirHandle, &_findData)) { _current = _base; #ifdef GHC_USE_WCHAR_T _current.append_name(_findData.cFileName); #else #ifdef GHC_RAISE_UNICODE_ERRORS try { _current.append_name(detail::toUtf8(_findData.cFileName).c_str()); } catch (filesystem_error& fe) { ec = fe.code(); return; } #else _current.append_name(detail::toUtf8(_findData.cFileName).c_str()); #endif #endif copyToDirEntry(ec); } else { auto err = ::GetLastError(); if (err != ERROR_NO_MORE_FILES) { _ec = ec = detail::make_system_error(err); } FindClose(_dirHandle); _dirHandle = INVALID_HANDLE_VALUE; _current = filesystem::path(); break; } } while (std::wstring(_findData.cFileName) == L"." || std::wstring(_findData.cFileName) == L".."); } else { ec = _ec; } } void copyToDirEntry(std::error_code& ec) { _dir_entry._path = _current; if (_findData.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { _dir_entry._status = detail::status_ex(_current, ec, &_dir_entry._symlink_status, &_dir_entry._file_size, nullptr, &_dir_entry._last_write_time); } else { _dir_entry._status = detail::status_from_INFO(_current, &_findData, ec, &_dir_entry._file_size, &_dir_entry._last_write_time); _dir_entry._symlink_status = _dir_entry._status; } if (ec) { if (_dir_entry._status.type() != file_type::none && _dir_entry._symlink_status.type() != file_type::none) { ec.clear(); } else { _dir_entry._file_size = static_cast(-1); _dir_entry._last_write_time = 0; } } } path _base; directory_options _options; WIN32_FIND_DATAW _findData; HANDLE _dirHandle; path _current; directory_entry _dir_entry; std::error_code _ec; }; #else // POSIX implementation class directory_iterator::impl { public: impl(const path& path, directory_options options) : _base(path) , _options(options) , _dir(nullptr) , _entry(nullptr) { if (!path.empty()) { _dir = ::opendir(path.native().c_str()); if (!_dir) { auto error = errno; _base = filesystem::path(); if ((error != EACCES && error != EPERM) || (options & directory_options::skip_permission_denied) == directory_options::none) { _ec = detail::make_system_error(); } } else { increment(_ec); } } } impl(const impl& other) = delete; ~impl() { if (_dir) { ::closedir(_dir); } } void increment(std::error_code& ec) { if (_dir) { bool skip; do { skip = false; errno = 0; _entry = ::readdir(_dir); if (_entry) { _current = _base; _current.append_name(_entry->d_name); _dir_entry.assign(_current, ec); if (ec && (ec.value() == EACCES || ec.value() == EPERM) && (_options & directory_options::skip_permission_denied) == directory_options::skip_permission_denied) { ec.clear(); skip = true; } } else { ::closedir(_dir); _dir = nullptr; _current = path(); if (errno) { ec = detail::make_system_error(); } break; } } while (skip || std::strcmp(_entry->d_name, ".") == 0 || std::strcmp(_entry->d_name, "..") == 0); } } path _base; directory_options _options; path _current; DIR* _dir; struct ::dirent* _entry; directory_entry _dir_entry; std::error_code _ec; }; #endif // 30.10.13.1 member functions GHC_INLINE directory_iterator::directory_iterator() noexcept : _impl(new impl(path(), directory_options::none)) { } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE directory_iterator::directory_iterator(const path& p) : _impl(new impl(p, directory_options::none)) { if (_impl->_ec) { throw filesystem_error(detail::systemErrorText(_impl->_ec.value()), p, _impl->_ec); } _impl->_ec.clear(); } GHC_INLINE directory_iterator::directory_iterator(const path& p, directory_options options) : _impl(new impl(p, options)) { if (_impl->_ec) { throw filesystem_error(detail::systemErrorText(_impl->_ec.value()), p, _impl->_ec); } } #endif GHC_INLINE directory_iterator::directory_iterator(const path& p, std::error_code& ec) noexcept : _impl(new impl(p, directory_options::none)) { if (_impl->_ec) { ec = _impl->_ec; } } GHC_INLINE directory_iterator::directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept : _impl(new impl(p, options)) { if (_impl->_ec) { ec = _impl->_ec; } } GHC_INLINE directory_iterator::directory_iterator(const directory_iterator& rhs) : _impl(rhs._impl) { } GHC_INLINE directory_iterator::directory_iterator(directory_iterator&& rhs) noexcept : _impl(std::move(rhs._impl)) { } GHC_INLINE directory_iterator::~directory_iterator() {} GHC_INLINE directory_iterator& directory_iterator::operator=(const directory_iterator& rhs) { _impl = rhs._impl; return *this; } GHC_INLINE directory_iterator& directory_iterator::operator=(directory_iterator&& rhs) noexcept { _impl = std::move(rhs._impl); return *this; } GHC_INLINE const directory_entry& directory_iterator::operator*() const { return _impl->_dir_entry; } GHC_INLINE const directory_entry* directory_iterator::operator->() const { return &_impl->_dir_entry; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE directory_iterator& directory_iterator::operator++() { std::error_code ec; _impl->increment(ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), _impl->_current, ec); } return *this; } #endif GHC_INLINE directory_iterator& directory_iterator::increment(std::error_code& ec) noexcept { _impl->increment(ec); return *this; } GHC_INLINE bool directory_iterator::operator==(const directory_iterator& rhs) const { return _impl->_current == rhs._impl->_current; } GHC_INLINE bool directory_iterator::operator!=(const directory_iterator& rhs) const { return _impl->_current != rhs._impl->_current; } // 30.10.13.2 directory_iterator non-member functions GHC_INLINE directory_iterator begin(directory_iterator iter) noexcept { return iter; } GHC_INLINE directory_iterator end(const directory_iterator&) noexcept { return directory_iterator(); } //----------------------------------------------------------------------------- // 30.10.14 class recursive_directory_iterator GHC_INLINE recursive_directory_iterator::recursive_directory_iterator() noexcept : _impl(new recursive_directory_iterator_impl(directory_options::none, true)) { _impl->_dir_iter_stack.push(directory_iterator()); } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p) : _impl(new recursive_directory_iterator_impl(directory_options::none, true)) { _impl->_dir_iter_stack.push(directory_iterator(p)); } GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p, directory_options options) : _impl(new recursive_directory_iterator_impl(options, true)) { _impl->_dir_iter_stack.push(directory_iterator(p, options)); } #endif GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept : _impl(new recursive_directory_iterator_impl(options, true)) { _impl->_dir_iter_stack.push(directory_iterator(p, options, ec)); } GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p, std::error_code& ec) noexcept : _impl(new recursive_directory_iterator_impl(directory_options::none, true)) { _impl->_dir_iter_stack.push(directory_iterator(p, ec)); } GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const recursive_directory_iterator& rhs) : _impl(rhs._impl) { } GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(recursive_directory_iterator&& rhs) noexcept : _impl(std::move(rhs._impl)) { } GHC_INLINE recursive_directory_iterator::~recursive_directory_iterator() {} // 30.10.14.1 observers GHC_INLINE directory_options recursive_directory_iterator::options() const { return _impl->_options; } GHC_INLINE int recursive_directory_iterator::depth() const { return static_cast(_impl->_dir_iter_stack.size() - 1); } GHC_INLINE bool recursive_directory_iterator::recursion_pending() const { return _impl->_recursion_pending; } GHC_INLINE const directory_entry& recursive_directory_iterator::operator*() const { return *(_impl->_dir_iter_stack.top()); } GHC_INLINE const directory_entry* recursive_directory_iterator::operator->() const { return &(*(_impl->_dir_iter_stack.top())); } // 30.10.14.1 modifiers recursive_directory_iterator& GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::operator=(const recursive_directory_iterator& rhs) { _impl = rhs._impl; return *this; } GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::operator=(recursive_directory_iterator&& rhs) noexcept { _impl = std::move(rhs._impl); return *this; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::operator++() { std::error_code ec; increment(ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), _impl->_dir_iter_stack.empty() ? path() : _impl->_dir_iter_stack.top()->path(), ec); } return *this; } #endif GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::increment(std::error_code& ec) noexcept { bool isDir = (*this)->is_directory(ec); bool isSymLink = !ec && (*this)->is_symlink(ec); if(!ec) { if (recursion_pending() && isDir && (!isSymLink || (options() & directory_options::follow_directory_symlink) != directory_options::none)) { _impl->_dir_iter_stack.push(directory_iterator((*this)->path(), _impl->_options, ec)); } else { _impl->_dir_iter_stack.top().increment(ec); } if (!ec) { while (depth() && _impl->_dir_iter_stack.top() == directory_iterator()) { _impl->_dir_iter_stack.pop(); _impl->_dir_iter_stack.top().increment(ec); } } else if (!_impl->_dir_iter_stack.empty()) { _impl->_dir_iter_stack.pop(); } _impl->_recursion_pending = true; } return *this; } #ifdef GHC_WITH_EXCEPTIONS GHC_INLINE void recursive_directory_iterator::pop() { std::error_code ec; pop(ec); if (ec) { throw filesystem_error(detail::systemErrorText(ec.value()), _impl->_dir_iter_stack.empty() ? path() : _impl->_dir_iter_stack.top()->path(), ec); } } #endif GHC_INLINE void recursive_directory_iterator::pop(std::error_code& ec) { if (depth() == 0) { *this = recursive_directory_iterator(); } else { do { _impl->_dir_iter_stack.pop(); _impl->_dir_iter_stack.top().increment(ec); } while (depth() && _impl->_dir_iter_stack.top() == directory_iterator()); } } GHC_INLINE void recursive_directory_iterator::disable_recursion_pending() { _impl->_recursion_pending = false; } // other members as required by 27.2.3, input iterators GHC_INLINE bool recursive_directory_iterator::operator==(const recursive_directory_iterator& rhs) const { return _impl->_dir_iter_stack.top() == rhs._impl->_dir_iter_stack.top(); } GHC_INLINE bool recursive_directory_iterator::operator!=(const recursive_directory_iterator& rhs) const { return _impl->_dir_iter_stack.top() != rhs._impl->_dir_iter_stack.top(); } // 30.10.14.2 directory_iterator non-member functions GHC_INLINE recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept { return iter; } GHC_INLINE recursive_directory_iterator end(const recursive_directory_iterator&) noexcept { return recursive_directory_iterator(); } #endif // GHC_EXPAND_IMPL } // namespace filesystem } // namespace ghc // cleanup some macros #undef GHC_INLINE #undef GHC_EXPAND_IMPL #endif // GHC_FILESYSTEM_H