30 #ifndef _GLIBCXX_FS_PATH_H
31 #define _GLIBCXX_FS_PATH_H 1
33 #if __cplusplus >= 201703L
46 #include <bits/shared_ptr.h>
49 #if __cplusplus > 201703L
53 #if defined(_WIN32) && !defined(__CYGWIN__)
54 # define _GLIBCXX_FILESYSTEM_IS_WINDOWS 1
57 namespace std _GLIBCXX_VISIBILITY(default)
59 _GLIBCXX_BEGIN_NAMESPACE_VERSION
63 _GLIBCXX_BEGIN_NAMESPACE_CXX11
72 template<
typename _CharT>
73 inline constexpr
bool __is_encoded_char =
false;
75 inline constexpr
bool __is_encoded_char<char> =
true;
76 #ifdef _GLIBCXX_USE_CHAR8_T
78 inline constexpr
bool __is_encoded_char<char8_t> =
true;
80 #if _GLIBCXX_USE_WCHAR_T
82 inline constexpr
bool __is_encoded_char<wchar_t> =
true;
85 inline constexpr
bool __is_encoded_char<char16_t> =
true;
87 inline constexpr
bool __is_encoded_char<char32_t> =
true;
89 #if __cpp_concepts >= 201907L
90 template<
typename _Iter>
93 template<
typename _Iter>
98 template<>
struct __safe_iterator_traits<void*> { };
99 template<>
struct __safe_iterator_traits<const void*> { };
100 template<>
struct __safe_iterator_traits<volatile void*> { };
101 template<>
struct __safe_iterator_traits<const volatile void*> { };
104 template<
typename _Iter_traits,
typename =
void>
105 struct __is_path_iter_src
109 template<
typename _Iter_traits>
110 struct __is_path_iter_src<_Iter_traits,
111 void_t<typename _Iter_traits::value_type>>
112 :
bool_constant<__is_encoded_char<typename _Iter_traits::value_type>>
115 template<
typename _Source>
116 inline constexpr
bool __is_path_src
117 = __is_path_iter_src<iterator_traits<decay_t<_Source>>>::value;
120 inline constexpr
bool __is_path_src<path> =
false;
123 inline constexpr
bool __is_path_src<volatile path> =
false;
126 inline constexpr
bool __is_path_src<void*> =
false;
129 inline constexpr
bool __is_path_src<const void*> =
false;
132 inline constexpr
bool __is_path_src<volatile void*> =
false;
135 inline constexpr
bool __is_path_src<const volatile void*> =
false;
137 template<
typename _CharT,
typename _Traits,
typename _Alloc>
138 inline constexpr
bool
139 __is_path_src<basic_string<_CharT, _Traits, _Alloc>>
140 = __is_encoded_char<_CharT>;
142 template<
typename _CharT,
typename _Traits>
143 inline constexpr
bool
144 __is_path_src<basic_string_view<_CharT, _Traits>>
145 = __is_encoded_char<_CharT>;
148 template<
typename _Tp>
149 using _Path = enable_if_t<__is_path_src<_Tp>, path>;
152 template<
typename _Iter,
typename _Tr = __safe_iterator_traits<_Iter>>
153 using _Path2 = enable_if_t<__is_path_iter_src<_Tr>::value, path>;
155 #if __cpp_lib_concepts
156 template<
typename _Iter>
157 constexpr
bool __is_contiguous = std::contiguous_iterator<_Iter>;
159 template<
typename _Iter>
160 constexpr
bool __is_contiguous =
false;
163 template<
typename _Tp>
164 constexpr
bool __is_contiguous<_Tp*> =
true;
166 template<
typename _Tp,
typename _Seq>
168 __is_contiguous<__gnu_cxx::__normal_iterator<_Tp*, _Seq>> =
true;
170 #if !defined _GLIBCXX_FILESYSTEM_IS_WINDOWS && defined _GLIBCXX_USE_CHAR8_T
172 template<
typename _E
charT>
174 = __conditional_t<is_same_v<_EcharT, char8_t>, char, _EcharT>;
176 template<
typename _E
charT>
177 using __unified_u8_t = _EcharT;
184 template<
typename _CharT,
typename _Traits,
typename _Alloc>
185 inline basic_string_view<_CharT>
186 __effective_range(
const basic_string<_CharT, _Traits, _Alloc>& __source)
190 template<
typename _CharT,
typename _Traits>
191 inline basic_string_view<_CharT>
192 __effective_range(
const basic_string_view<_CharT, _Traits>& __source)
197 template<
typename _Source>
199 __effective_range(
const _Source& __source)
202 using _Iter = decltype(std::__niter_base(__source));
203 using value_type =
typename iterator_traits<_Iter>::value_type;
205 if constexpr (__is_contiguous<_Iter>)
206 return basic_string_view<value_type>{&*__source};
211 basic_string<__unified_u8_t<value_type>> __str;
212 _Source __it = __source;
213 for (value_type __ch = *__it; __ch != value_type(); __ch = *++__it)
214 __str.push_back(__ch);
220 template<
typename _Source>
221 struct __source_value_type_impl
224 =
typename __safe_iterator_traits<decay_t<_Source>>::value_type;
227 template<
typename _CharT,
typename _Traits,
typename _Alloc>
228 struct __source_value_type_impl<basic_string<_CharT, _Traits, _Alloc>>
233 template<
typename _CharT,
typename _Traits>
234 struct __source_value_type_impl<basic_string_view<_CharT, _Traits>>
240 template<
typename _Source>
241 using __source_value_t =
typename __source_value_type_impl<_Source>::type;
246 template<
typename _Tp,
typename _Val = __source_value_t<_Tp>>
247 using __value_type_is_char
252 template<
typename _Tp,
typename _Val = __source_value_t<_Tp>>
253 using __value_type_is_char_or_char8_t
255 #ifdef _GLIBCXX_USE_CHAR8_T
256 || std::is_same_v<_Val, char8_t>
261 template<
typename _InputIterator>
263 __string_from_range(_InputIterator __first, _InputIterator __last)
267 static_assert(__is_encoded_char<_EcharT>);
269 if constexpr (__is_contiguous<_InputIterator>)
272 if (
auto __len = __last - __first) [[__likely__]]
273 return basic_string_view<_EcharT>(&*__first, __len);
274 return basic_string_view<_EcharT>();
279 return basic_string<__unified_u8_t<_EcharT>>(__first, __last);
295 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
296 using value_type = wchar_t;
297 static constexpr value_type preferred_separator = L
'\\';
299 # ifdef _GLIBCXX_DOXYGEN
301 using value_type = __os_dependent__;
303 using value_type = char;
305 static constexpr value_type preferred_separator =
'/';
310 enum format :
unsigned char { native_format, generic_format, auto_format };
316 path(
const path& __p) =
default;
318 path(path&& __p) noexcept
319 : _M_pathname(
std::move(__p._M_pathname)),
323 path(string_type&& __source,
format = auto_format)
324 : _M_pathname(
std::
move(__source))
325 { _M_split_cmpts(); }
327 template<
typename _Source,
328 typename _Require = __detail::_Path<_Source>>
329 path(_Source
const& __source,
format = auto_format)
330 : _M_pathname(_S_convert(__detail::__effective_range(__source)))
331 { _M_split_cmpts(); }
333 template<
typename _InputIterator,
334 typename _Require = __detail::_Path2<_InputIterator>>
335 path(_InputIterator __first, _InputIterator __last,
format = auto_format)
336 : _M_pathname(_S_convert(__detail::__string_from_range(__first, __last)))
337 { _M_split_cmpts(); }
339 template<
typename _Source,
340 typename _Require = __detail::_Path<_Source>,
341 typename _Require2 = __detail::__value_type_is_char<_Source>>
342 path(_Source
const& __src,
const locale& __loc,
format = auto_format)
343 : _M_pathname(_S_convert_loc(__detail::__effective_range(__src), __loc))
344 { _M_split_cmpts(); }
346 template<
typename _InputIterator,
347 typename _Require = __detail::_Path2<_InputIterator>,
348 typename _Req2 = __detail::__value_type_is_char<_InputIterator>>
349 path(_InputIterator __first, _InputIterator __last,
const locale& __loc,
351 : _M_pathname(_S_convert_loc(__first, __last, __loc))
352 { _M_split_cmpts(); }
358 path& operator=(
const path&);
359 path& operator=(path&&) noexcept;
360 path& operator=(string_type&& __source);
361 path& assign(string_type&& __source);
363 template<typename _Source>
364 __detail::_Path<_Source>&
365 operator=(_Source const& __source)
366 {
return *
this = path(__source); }
368 template<
typename _Source>
369 __detail::_Path<_Source>&
370 assign(_Source
const& __source)
371 {
return *
this = path(__source); }
373 template<
typename _InputIterator>
374 __detail::_Path2<_InputIterator>&
375 assign(_InputIterator __first, _InputIterator __last)
376 {
return *
this = path(__first, __last); }
380 path& operator/=(
const path& __p);
382 template<
typename _Source>
383 __detail::_Path<_Source>&
384 operator/=(_Source
const& __source)
386 _M_append(_S_convert(__detail::__effective_range(__source)));
390 template<
typename _Source>
391 __detail::_Path<_Source>&
392 append(_Source
const& __source)
394 _M_append(_S_convert(__detail::__effective_range(__source)));
398 template<
typename _InputIterator>
399 __detail::_Path2<_InputIterator>&
400 append(_InputIterator __first, _InputIterator __last)
402 _M_append(_S_convert(__detail::__string_from_range(__first, __last)));
408 path& operator+=(
const path& __x);
409 path& operator+=(
const string_type& __x);
410 path& operator+=(
const value_type* __x);
411 path& operator+=(value_type __x);
412 path& operator+=(basic_string_view<value_type> __x);
414 template<
typename _Source>
415 __detail::_Path<_Source>&
416 operator+=(_Source
const& __x) {
return concat(__x); }
418 template<
typename _CharT>
419 __detail::_Path2<_CharT*>&
420 operator+=(_CharT __x);
422 template<
typename _Source>
423 __detail::_Path<_Source>&
424 concat(_Source
const& __x)
426 _M_concat(_S_convert(__detail::__effective_range(__x)));
430 template<
typename _InputIterator>
431 __detail::_Path2<_InputIterator>&
432 concat(_InputIterator __first, _InputIterator __last)
434 _M_concat(_S_convert(__detail::__string_from_range(__first, __last)));
440 void clear() noexcept { _M_pathname.
clear(); _M_split_cmpts(); }
442 path& make_preferred();
443 path& remove_filename();
444 path& replace_filename(
const path& __replacement);
445 path& replace_extension(
const path& __replacement = path());
447 void swap(path& __rhs) noexcept;
451 const string_type& native() const noexcept {
return _M_pathname; }
452 const value_type* c_str() const noexcept {
return _M_pathname.
c_str(); }
453 operator string_type()
const {
return _M_pathname; }
455 template<
typename _CharT,
typename _Traits = std::
char_traits<_CharT>,
456 typename _Allocator = std::allocator<_CharT>>
458 string(
const _Allocator& __a = _Allocator())
const;
461 #if _GLIBCXX_USE_WCHAR_T
464 #ifdef _GLIBCXX_USE_CHAR8_T
465 __attribute__((__abi_tag__(
"__u8")))
466 std::u8string u8string() const;
474 template<
typename _CharT,
typename _Traits = std::
char_traits<_CharT>,
475 typename _Allocator = std::allocator<_CharT>>
477 generic_string(
const _Allocator& __a = _Allocator())
const;
480 #if _GLIBCXX_USE_WCHAR_T
483 #ifdef _GLIBCXX_USE_CHAR8_T
484 __attribute__((__abi_tag__(
"__u8")))
485 std::u8string generic_u8string() const;
494 int compare(
const path& __p)
const noexcept;
495 int compare(
const string_type& __s)
const noexcept;
496 int compare(
const value_type* __s)
const noexcept;
497 int compare(basic_string_view<value_type> __s)
const noexcept;
501 path root_name()
const;
502 path root_directory()
const;
503 path root_path()
const;
504 path relative_path()
const;
505 path parent_path()
const;
506 path filename()
const;
508 path extension()
const;
512 [[nodiscard]]
bool empty() const noexcept {
return _M_pathname.
empty(); }
513 bool has_root_name() const noexcept;
514 bool has_root_directory() const noexcept;
515 bool has_root_path() const noexcept;
516 bool has_relative_path() const noexcept;
517 bool has_parent_path() const noexcept;
518 bool has_filename() const noexcept;
519 bool has_stem() const noexcept;
520 bool has_extension() const noexcept;
521 bool is_absolute() const noexcept;
522 bool is_relative() const noexcept {
return !is_absolute(); }
525 path lexically_normal()
const;
526 path lexically_relative(
const path& base)
const;
527 path lexically_proximate(
const path& base)
const;
531 using const_iterator = iterator;
533 iterator begin() const noexcept;
534 iterator end() const noexcept;
537 template<typename _CharT, typename _Traits>
541 __os <<
std::quoted(__p.string<_CharT, _Traits>());
546 template<
typename _CharT,
typename _Traits>
560 {
return path::_S_compare(__lhs, __rhs) == 0; }
562 #if __cpp_lib_three_way_comparison
564 friend strong_ordering
565 operator<=>(
const path& __lhs,
const path& __rhs) noexcept
566 {
return path::_S_compare(__lhs, __rhs) <=> 0; }
570 {
return !(__lhs == __rhs); }
574 {
return __lhs.compare(__rhs) < 0; }
578 {
return !(__rhs < __lhs); }
582 {
return __rhs < __lhs; }
586 {
return !(__lhs < __rhs); }
592 path __result(__lhs);
598 enum class _Type : unsigned char {
599 _Multi = 0, _Root_name, _Root_dir, _Filename
605 __glibcxx_assert(__type != _Type::_Multi);
606 _M_cmpts.type(__type);
609 enum class _Split { _Stem, _Extension };
611 void _M_append(basic_string_view<value_type>);
612 void _M_concat(basic_string_view<value_type>);
614 pair<const string_type*, size_t> _M_find_extension() const noexcept;
620 template<typename _Tp>
622 _S_convert(_Tp __str)
623 noexcept(is_same_v<typename _Tp::value_type, value_type>)
625 if constexpr (is_same_v<typename _Tp::value_type, value_type>)
627 #if !defined _GLIBCXX_FILESYSTEM_IS_WINDOWS && defined _GLIBCXX_USE_CHAR8_T
628 else if constexpr (is_same_v<_Tp, std::u8string>)
632 return string_type(_S_convert(__str.data(),
633 __str.data() + __str.size()));
636 return _S_convert(__str.data(), __str.data() + __str.size());
639 template<
typename _E
charT>
641 _S_convert(
const _EcharT* __first,
const _EcharT* __last);
647 _S_convert_loc(
const char* __first,
const char* __last,
650 template<
typename _Iter>
652 _S_convert_loc(_Iter __first, _Iter __last,
const std::locale& __loc)
654 const auto __s = __detail::__string_from_range(__first, __last);
655 return _S_convert_loc(__s.data(), __s.data() + __s.size(), __loc);
658 template<
typename _Tp>
660 _S_convert_loc(
const _Tp& __s,
const std::locale& __loc)
662 return _S_convert_loc(__s.data(), __s.data() + __s.size(), __loc);
665 template<
typename _CharT,
typename _Traits,
typename _Allocator>
666 static basic_string<_CharT, _Traits, _Allocator>
667 _S_str_convert(basic_string_view<value_type>,
const _Allocator&);
670 __attribute__((__always_inline__))
672 _S_compare(
const path& __lhs,
const path& __rhs) noexcept;
674 void _M_split_cmpts();
676 _Type _M_type() const noexcept {
return _M_cmpts.type(); }
678 string_type _M_pathname;
684 using value_type = _Cmpt;
685 using iterator = value_type*;
686 using const_iterator =
const value_type*;
690 _List(_List&&) =
default;
691 _List& operator=(
const _List&);
692 _List& operator=(_List&&) =
default;
695 _Type type() const noexcept
696 {
return _Type(
reinterpret_cast<uintptr_t
>(_M_impl.get()) & 0x3); }
698 void type(_Type) noexcept;
700 int size() const noexcept;
701 bool empty() const noexcept;
703 void swap(_List& __l) noexcept { _M_impl.swap(__l._M_impl); }
704 int capacity() const noexcept;
705 void reserve(
int,
bool);
710 iterator begin() noexcept;
711 iterator end() noexcept;
712 const_iterator begin() const noexcept;
713 const_iterator end() const noexcept;
715 value_type& front() noexcept;
716 value_type& back() noexcept;
717 const value_type& front() const noexcept;
718 const value_type& back() const noexcept;
721 void _M_erase_from(const_iterator __pos);
726 void operator()(_Impl*)
const noexcept;
728 unique_ptr<_Impl, _Impl_deleter> _M_impl;
734 template<
typename _E
charT>
struct _Codecvt;
740 inline void swap(path& __lhs, path& __rhs) noexcept { __lhs.swap(__rhs); }
742 size_t hash_value(
const path& __p) noexcept;
766 const path& path1()
const noexcept;
767 const path& path2()
const noexcept;
768 const char*
what() const noexcept;
772 std::__shared_ptr<const _Impl> _M_impl;
778 [[noreturn]]
inline void
779 __throw_conversion_error()
782 "Cannot convert character sequence",
783 std::make_error_code(errc::illegal_byte_sequence)));
786 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
787 template<
typename _Tp>
789 __wstr_from_utf8(
const _Tp& __str)
791 static_assert(std::is_same_v<typename _Tp::value_type, char>);
794 std::codecvt_utf8_utf16<wchar_t> __wcvt;
795 const auto __p = __str.
data();
796 if (!__str_codecvt_in_all(__p, __p + __str.size(), __wstr, __wcvt))
797 __detail::__throw_conversion_error();
810 template<
typename _InputIterator,
811 typename _Require = __detail::_Path2<_InputIterator>,
813 = __detail::__value_type_is_char_or_char8_t<_InputIterator>>
815 u8path(_InputIterator __first, _InputIterator __last)
817 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
818 if constexpr (is_same_v<_CharT, char>)
819 return path{ __detail::__wstr_from_utf8(
820 __detail::__string_from_range(__first, __last)) };
822 return path{ __first, __last };
825 return path{ __first, __last };
833 template<
typename _Source,
834 typename _Require = __detail::_Path<_Source>,
835 typename _CharT = __detail::__value_type_is_char_or_char8_t<_Source>>
839 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
840 if constexpr (is_same_v<_CharT, char>)
841 return path{ __detail::__wstr_from_utf8(
842 __detail::__effective_range(__source)) };
844 return path{ __source };
847 return path{ __source };
853 struct path::_Cmpt :
path
856 :
path(__s, __t), _M_pos(__pos) { }
858 _Cmpt() : _M_pos(-1) { }
869 template<
typename _E
charT>
870 struct path::_Codecvt
883 struct path::_Codecvt<wchar_t>
884 : __conditional_t<sizeof(wchar_t) == sizeof(char32_t),
885 std::codecvt_utf8<wchar_t>,
886 std::codecvt_utf8_utf16<wchar_t>>
889 template<
typename _E
charT>
891 path::_S_convert(
const _EcharT* __f,
const _EcharT* __l)
893 static_assert(__detail::__is_encoded_char<_EcharT>);
895 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
896 # define _GLIBCXX_CONV_FROM_UTF8(S) __detail::__wstr_from_utf8(S)
898 # define _GLIBCXX_CONV_FROM_UTF8(S) S
901 if constexpr (is_same_v<_EcharT, value_type>)
902 return basic_string_view<value_type>(__f, __l - __f);
903 #ifdef _GLIBCXX_USE_CHAR8_T
904 else if constexpr (is_same_v<_EcharT, char8_t>)
906 string_view __str(
reinterpret_cast<const char*
>(__f), __l - __f);
907 return _GLIBCXX_CONV_FROM_UTF8(__str);
910 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
911 else if constexpr (is_same_v<_EcharT, char>)
914 path::_Codecvt<wchar_t> __cvt;
915 if (__str_codecvt_in_all(__f, __l, __wstr, __cvt))
921 path::_Codecvt<_EcharT> __cvt;
923 if (__str_codecvt_out_all(__f, __l, __str, __cvt))
924 return _GLIBCXX_CONV_FROM_UTF8(__str);
926 __detail::__throw_conversion_error();
928 #undef _GLIBCXX_CONV_FROM_UTF8
936 using difference_type = std::ptrdiff_t;
942 iterator() noexcept : _M_path(
nullptr), _M_cur(), _M_at_end() { }
953 {
auto __tmp = *
this; ++*
this;
return __tmp; }
958 {
auto __tmp = *
this; --*
this;
return __tmp; }
962 {
return __lhs._M_equals(__rhs); }
966 {
return !__lhs._M_equals(__rhs); }
972 _M_is_multi()
const noexcept
973 {
return _M_path->_M_type() == _Type::_Multi; }
975 friend difference_type
979 __glibcxx_assert(__first._M_path !=
nullptr);
980 __glibcxx_assert(__first._M_path == __last._M_path);
981 if (__first._M_is_multi())
983 else if (__first._M_at_end == __last._M_at_end)
986 return __first._M_at_end ? -1 : 1;
990 __path_iter_advance(
iterator& __i, difference_type __n) noexcept
998 __glibcxx_assert(__i._M_path !=
nullptr);
999 __glibcxx_assert(__i._M_is_multi());
1005 iterator(
const path* __path, path::_List::const_iterator __iter) noexcept
1006 : _M_path(__path), _M_cur(__iter), _M_at_end()
1010 : _M_path(__path), _M_cur(), _M_at_end(__at_end)
1013 bool _M_equals(
iterator)
const noexcept;
1015 const path* _M_path;
1016 path::_List::const_iterator _M_cur;
1022 path::operator=(
path&& __p) noexcept
1024 if (&__p ==
this) [[__unlikely__]]
1027 _M_pathname =
std::move(__p._M_pathname);
1034 path::operator=(string_type&& __source)
1038 path::assign(string_type&& __source)
1039 {
return *
this = path(
std::move(__source)); }
1042 path::operator+=(
const string_type& __x)
1049 path::operator+=(
const value_type* __x)
1056 path::operator+=(value_type __x)
1058 _M_concat(basic_string_view<value_type>(&__x, 1));
1063 path::operator+=(basic_string_view<value_type> __x)
1069 template<
typename _CharT>
1070 inline __detail::_Path2<_CharT*>&
1071 path::operator+=(
const _CharT __x)
1073 _M_concat(_S_convert(&__x, &__x + 1));
1078 path::make_preferred()
1080 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
1081 auto __pos = _M_pathname.find(L
'/');
1082 while (__pos != _M_pathname.npos)
1084 _M_pathname[__pos] = preferred_separator;
1085 __pos = _M_pathname.find(L
'/', __pos);
1091 inline void path::swap(path& __rhs) noexcept
1093 _M_pathname.swap(__rhs._M_pathname);
1094 _M_cmpts.swap(__rhs._M_cmpts);
1098 template<
typename _CharT,
typename _Traits,
typename _Allocator>
1100 path::_S_str_convert(basic_string_view<value_type> __str,
1101 const _Allocator& __a)
1103 static_assert(!is_same_v<_CharT, value_type>);
1105 using _WString = basic_string<_CharT, _Traits, _Allocator>;
1107 if (__str.size() == 0)
1108 return _WString(__a);
1110 #ifndef _GLIBCXX_FILESYSTEM_IS_WINDOWS
1111 string_view __u8str = __str;
1115 std::codecvt_utf8_utf16<value_type> __cvt;
1117 using _CharAlloc = __alloc_rebind<_Allocator, char>;
1118 using _String = basic_string<char, char_traits<char>, _CharAlloc>;
1119 _String __u8str{_CharAlloc{__a}};
1120 const value_type* __wfirst = __str.data();
1121 const value_type* __wlast = __wfirst + __str.size();
1122 if (!__str_codecvt_out_all(__wfirst, __wlast, __u8str, __cvt))
1123 __detail::__throw_conversion_error();
1124 if constexpr (is_same_v<_CharT, char>)
1129 const char* __first = __u8str.data();
1130 const char* __last = __first + __u8str.size();
1133 #ifdef _GLIBCXX_USE_CHAR8_T
1134 if constexpr (is_same_v<_CharT, char8_t>)
1135 return _WString(__first, __last, __a);
1140 _WString __wstr(__a);
1141 path::_Codecvt<_CharT> __cvt;
1142 if (__str_codecvt_in_all(__first, __last, __wstr, __cvt))
1146 __detail::__throw_conversion_error();
1150 template<
typename _CharT,
typename _Traits,
typename _Allocator>
1151 inline basic_string<_CharT, _Traits, _Allocator>
1154 if constexpr (is_same_v<_CharT, value_type>)
1155 return { _M_pathname.
c_str(), _M_pathname.length(), __a };
1157 return _S_str_convert<_CharT, _Traits>(_M_pathname, __a);
1163 #if _GLIBCXX_USE_WCHAR_T
1168 #ifdef _GLIBCXX_USE_CHAR8_T
1169 inline std::u8string
1170 path::u8string()
const {
return string<char8_t>(); }
1173 path::u8string()
const
1175 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
1178 std::codecvt_utf8_utf16<value_type> __cvt;
1179 const value_type* __first = _M_pathname.
data();
1180 const value_type* __last = __first + _M_pathname.size();
1181 if (__str_codecvt_out_all(__first, __last, __str, __cvt))
1183 __detail::__throw_conversion_error();
1196 template<
typename _CharT,
typename _Traits,
typename _Allocator>
1198 path::generic_string(
const _Allocator& __a)
const
1200 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
1201 const value_type __slash = L
'/';
1203 const value_type __slash =
'/';
1205 using _Alloc2 =
typename allocator_traits<_Allocator>::template
1206 rebind_alloc<value_type>;
1207 basic_string<value_type, char_traits<value_type>, _Alloc2> __str(__a);
1209 if (_M_type() == _Type::_Root_dir)
1210 __str.
assign(1, __slash);
1213 __str.
reserve(_M_pathname.size());
1214 bool __add_slash =
false;
1215 for (
auto& __elem : *
this)
1217 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
1218 if (__elem._M_type() == _Type::_Root_dir)
1226 __str += basic_string_view<value_type>(__elem._M_pathname);
1227 __add_slash = __elem._M_type() == _Type::_Filename;
1231 if constexpr (is_same_v<_CharT, value_type>)
1234 return _S_str_convert<_CharT, _Traits>(__str, __a);
1238 path::generic_string()
const
1239 {
return generic_string<char>(); }
1241 #if _GLIBCXX_USE_WCHAR_T
1243 path::generic_wstring()
const
1244 {
return generic_string<wchar_t>(); }
1247 #ifdef _GLIBCXX_USE_CHAR8_T
1248 inline std::u8string
1249 path::generic_u8string()
const
1250 {
return generic_string<char8_t>(); }
1253 path::generic_u8string()
const
1254 {
return generic_string(); }
1258 path::generic_u16string()
const
1259 {
return generic_string<char16_t>(); }
1262 path::generic_u32string()
const
1263 {
return generic_string<char32_t>(); }
1266 path::compare(
const string_type& __s)
const noexcept
1267 {
return compare(basic_string_view<value_type>(__s)); }
1270 path::compare(
const value_type* __s)
const noexcept
1271 {
return compare(basic_string_view<value_type>(__s)); }
1274 path::filename()
const
1278 else if (_M_type() == _Type::_Filename)
1280 else if (_M_type() == _Type::_Multi)
1282 if (_M_pathname.back() == preferred_separator)
1284 auto& __last = *--
end();
1285 if (__last._M_type() == _Type::_Filename)
1294 auto ext = _M_find_extension();
1295 if (ext.first && ext.second != 0)
1296 return path{ext.first->substr(0, ext.second)};
1301 path::extension()
const
1303 auto ext = _M_find_extension();
1304 if (ext.first && ext.second != string_type::npos)
1305 return path{ext.first->substr(ext.second)};
1310 path::has_stem() const noexcept
1312 auto ext = _M_find_extension();
1313 return ext.first && ext.second != 0;
1317 path::has_extension() const noexcept
1319 auto ext = _M_find_extension();
1320 return ext.first && ext.second != string_type::npos;
1324 path::is_absolute() const noexcept
1326 #ifdef _GLIBCXX_FILESYSTEM_IS_WINDOWS
1327 return has_root_name() && has_root_directory();
1329 return has_root_directory();
1333 inline path::iterator
1334 path::begin() const noexcept
1336 if (_M_type() == _Type::_Multi)
1337 return iterator(
this, _M_cmpts.begin());
1338 return iterator(
this,
empty());
1341 inline path::iterator
1342 path::end() const noexcept
1344 if (_M_type() == _Type::_Multi)
1345 return iterator(
this, _M_cmpts.end());
1346 return iterator(
this,
true);
1349 inline path::iterator&
1350 path::iterator::operator++() noexcept
1352 __glibcxx_assert(_M_path !=
nullptr);
1355 __glibcxx_assert(_M_cur != _M_path->_M_cmpts.end());
1360 __glibcxx_assert(!_M_at_end);
1366 inline path::iterator&
1367 path::iterator::operator--() noexcept
1369 __glibcxx_assert(_M_path !=
nullptr);
1372 __glibcxx_assert(_M_cur != _M_path->_M_cmpts.begin());
1377 __glibcxx_assert(_M_at_end);
1383 inline path::iterator::reference
1386 __glibcxx_assert(_M_path !=
nullptr);
1389 __glibcxx_assert(_M_cur != _M_path->_M_cmpts.end());
1396 path::iterator::_M_equals(iterator __rhs)
const noexcept
1398 if (_M_path != __rhs._M_path)
1400 if (_M_path ==
nullptr)
1403 return _M_cur == __rhs._M_cur;
1404 return _M_at_end == __rhs._M_at_end;
1412 path::_S_compare(
const path& __lhs,
const path& __rhs) noexcept
1413 {
return __lhs.compare(__rhs); }
1416 _GLIBCXX_END_NAMESPACE_CXX11
1422 distance(filesystem::path::iterator __first, filesystem::path::iterator __last)
1424 {
return __path_iter_distance(__first, __last); }
1426 template<
typename _Distance>
1428 advance(filesystem::path::iterator& __i, _Distance __n) noexcept
1429 { __path_iter_advance(__i,
static_cast<ptrdiff_t
>(__n)); }
1431 extern template class __shared_ptr<const filesystem::filesystem_error::_Impl>;
1438 struct hash<filesystem::path>
1441 operator()(
const filesystem::path& __p)
const noexcept
1442 {
return filesystem::hash_value(__p); }
1445 _GLIBCXX_END_NAMESPACE_VERSION
constexpr complex< _Tp > operator*(const complex< _Tp > &__x, const complex< _Tp > &__y)
Return new complex value x times y.
path u8path(_InputIterator __first, _InputIterator __last)
path u8path(const _Source &__source)
integral_constant< bool, __v > bool_constant
Alias template for compile-time boolean constant types.
void void_t
A metafunction that always yields void, used for detecting valid types.
integral_constant< bool, false > false_type
The type used as a compile-time boolean with false value.
typename enable_if< _Cond, _Tp >::type enable_if_t
Alias template for enable_if.
constexpr _Tp * __addressof(_Tp &__r) noexcept
Same as C++11 std::addressof.
constexpr std::remove_reference< _Tp >::type && move(_Tp &&__t) noexcept
Convert a value to an rvalue.
void swap(any &__x, any &__y) noexcept
Exchange the states of two any objects.
_Tp * end(valarray< _Tp > &__va) noexcept
Return an iterator pointing to one past the last element of the valarray.
basic_string< char > string
A string of char.
basic_string< char32_t > u32string
A string of char32_t.
basic_string< char16_t > u16string
A string of char16_t.
basic_string< wchar_t > wstring
A string of wchar_t.
ISO C++ entities toplevel namespace is std.
constexpr iterator_traits< _InputIterator >::difference_type distance(_InputIterator __first, _InputIterator __last)
A generalization of pointer arithmetic.
constexpr auto empty(const _Container &__cont) noexcept(noexcept(__cont.empty())) -> decltype(__cont.empty())
Return whether a container is empty.
constexpr auto size(const _Container &__cont) noexcept(noexcept(__cont.size())) -> decltype(__cont.size())
Return the size of a container.
constexpr void advance(_InputIterator &__i, _Distance __n)
A generalization of pointer arithmetic.
auto quoted(const _CharT *__string, _CharT __delim=_CharT('"'), _CharT __escape = _CharT('\\'))
Manipulator for quoted strings.
Template class basic_istream.
Template class basic_ostream.
A non-owning reference to a string.
An exception type that includes an error_code value.
Primary class template codecvt.
const _CharT * c_str() const noexcept
Return const pointer to null-terminated contents.
void reserve(size_type __res_arg)
Attempt to preallocate enough memory for specified number of characters.
basic_string & assign(const basic_string &__str)
Set value to contents of another string.
const _CharT * data() const noexcept
Return const pointer to contents.
bool empty() const noexcept
Traits class for iterators.
friend bool operator!=(const path &__lhs, const path &__rhs) noexcept
Compare paths.
friend bool operator<=(const path &__lhs, const path &__rhs) noexcept
Compare paths.
friend bool operator>(const path &__lhs, const path &__rhs) noexcept
Compare paths.
friend path operator/(const path &__lhs, const path &__rhs)
Append one path to another.
format
path::format is ignored in this implementation
friend bool operator>=(const path &__lhs, const path &__rhs) noexcept
Compare paths.
friend bool operator<(const path &__lhs, const path &__rhs) noexcept
Compare paths.
friend std::basic_istream< _CharT, _Traits > & operator>>(std::basic_istream< _CharT, _Traits > &__is, path &__p)
Read a path from a stream.
friend bool operator==(const path &__lhs, const path &__rhs) noexcept
Compare paths.
Exception type thrown by the Filesystem library.
const char * what() const noexcept
An iterator for the components of a path.
Container class for localization functionality.
Bidirectional iterators support a superset of forward iterator operations.