1// -*- C++ -*-
2//===--------------------------- filesystem -------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9#ifndef _LIBCPP_FILESYSTEM
10#define _LIBCPP_FILESYSTEM
11/*
12 filesystem synopsis
13
14 namespace std { namespace filesystem {
15
16 class path;
17
18 void swap(path& lhs, path& rhs) noexcept;
19 size_t hash_value(const path& p) noexcept;
20
21 bool operator==(const path& lhs, const path& rhs) noexcept;
22 bool operator!=(const path& lhs, const path& rhs) noexcept;
23 bool operator< (const path& lhs, const path& rhs) noexcept;
24 bool operator<=(const path& lhs, const path& rhs) noexcept;
25 bool operator> (const path& lhs, const path& rhs) noexcept;
26 bool operator>=(const path& lhs, const path& rhs) noexcept;
27
28 path operator/ (const path& lhs, const path& rhs);
29
30 // fs.path.io operators are friends of path.
31 template <class charT, class traits>
32 friend basic_ostream<charT, traits>&
33 operator<<(basic_ostream<charT, traits>& os, const path& p);
34
35 template <class charT, class traits>
36 friend basic_istream<charT, traits>&
37 operator>>(basic_istream<charT, traits>& is, path& p);
38
39 template <class Source>
40 path u8path(const Source& source);
41 template <class InputIterator>
42 path u8path(InputIterator first, InputIterator last);
43
44 class filesystem_error;
45 class directory_entry;
46
47 class directory_iterator;
48
49 // enable directory_iterator range-based for statements
50 directory_iterator begin(directory_iterator iter) noexcept;
51 directory_iterator end(const directory_iterator&) noexcept;
52
53 class recursive_directory_iterator;
54
55 // enable recursive_directory_iterator range-based for statements
56 recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept;
57 recursive_directory_iterator end(const recursive_directory_iterator&) noexcept;
58
59 class file_status;
60
61 struct space_info
62 {
63 uintmax_t capacity;
64 uintmax_t free;
65 uintmax_t available;
66 };
67
68 enum class file_type;
69 enum class perms;
70 enum class perm_options;
71 enum class copy_options;
72 enum class directory_options;
73
74 typedef chrono::time_point<trivial-clock> file_time_type;
75
76 // operational functions
77
78 path absolute(const path& p);
79 path absolute(const path& p, error_code &ec);
80
81 path canonical(const path& p);
82 path canonical(const path& p, error_code& ec);
83
84 void copy(const path& from, const path& to);
85 void copy(const path& from, const path& to, error_code& ec);
86 void copy(const path& from, const path& to, copy_options options);
87 void copy(const path& from, const path& to, copy_options options,
88 error_code& ec);
89
90 bool copy_file(const path& from, const path& to);
91 bool copy_file(const path& from, const path& to, error_code& ec);
92 bool copy_file(const path& from, const path& to, copy_options option);
93 bool copy_file(const path& from, const path& to, copy_options option,
94 error_code& ec);
95
96 void copy_symlink(const path& existing_symlink, const path& new_symlink);
97 void copy_symlink(const path& existing_symlink, const path& new_symlink,
98 error_code& ec) noexcept;
99
100 bool create_directories(const path& p);
101 bool create_directories(const path& p, error_code& ec);
102
103 bool create_directory(const path& p);
104 bool create_directory(const path& p, error_code& ec) noexcept;
105
106 bool create_directory(const path& p, const path& attributes);
107 bool create_directory(const path& p, const path& attributes,
108 error_code& ec) noexcept;
109
110 void create_directory_symlink(const path& to, const path& new_symlink);
111 void create_directory_symlink(const path& to, const path& new_symlink,
112 error_code& ec) noexcept;
113
114 void create_hard_link(const path& to, const path& new_hard_link);
115 void create_hard_link(const path& to, const path& new_hard_link,
116 error_code& ec) noexcept;
117
118 void create_symlink(const path& to, const path& new_symlink);
119 void create_symlink(const path& to, const path& new_symlink,
120 error_code& ec) noexcept;
121
122 path current_path();
123 path current_path(error_code& ec);
124 void current_path(const path& p);
125 void current_path(const path& p, error_code& ec) noexcept;
126
127 bool exists(file_status s) noexcept;
128 bool exists(const path& p);
129 bool exists(const path& p, error_code& ec) noexcept;
130
131 bool equivalent(const path& p1, const path& p2);
132 bool equivalent(const path& p1, const path& p2, error_code& ec) noexcept;
133
134 uintmax_t file_size(const path& p);
135 uintmax_t file_size(const path& p, error_code& ec) noexcept;
136
137 uintmax_t hard_link_count(const path& p);
138 uintmax_t hard_link_count(const path& p, error_code& ec) noexcept;
139
140 bool is_block_file(file_status s) noexcept;
141 bool is_block_file(const path& p);
142 bool is_block_file(const path& p, error_code& ec) noexcept;
143
144 bool is_character_file(file_status s) noexcept;
145 bool is_character_file(const path& p);
146 bool is_character_file(const path& p, error_code& ec) noexcept;
147
148 bool is_directory(file_status s) noexcept;
149 bool is_directory(const path& p);
150 bool is_directory(const path& p, error_code& ec) noexcept;
151
152 bool is_empty(const path& p);
153 bool is_empty(const path& p, error_code& ec) noexcept;
154
155 bool is_fifo(file_status s) noexcept;
156 bool is_fifo(const path& p);
157 bool is_fifo(const path& p, error_code& ec) noexcept;
158
159 bool is_other(file_status s) noexcept;
160 bool is_other(const path& p);
161 bool is_other(const path& p, error_code& ec) noexcept;
162
163 bool is_regular_file(file_status s) noexcept;
164 bool is_regular_file(const path& p);
165 bool is_regular_file(const path& p, error_code& ec) noexcept;
166
167 bool is_socket(file_status s) noexcept;
168 bool is_socket(const path& p);
169 bool is_socket(const path& p, error_code& ec) noexcept;
170
171 bool is_symlink(file_status s) noexcept;
172 bool is_symlink(const path& p);
173 bool is_symlink(const path& p, error_code& ec) noexcept;
174
175 file_time_type last_write_time(const path& p);
176 file_time_type last_write_time(const path& p, error_code& ec) noexcept;
177 void last_write_time(const path& p, file_time_type new_time);
178 void last_write_time(const path& p, file_time_type new_time,
179 error_code& ec) noexcept;
180
181 void permissions(const path& p, perms prms,
182 perm_options opts=perm_options::replace);
183 void permissions(const path& p, perms prms, error_code& ec) noexcept;
184 void permissions(const path& p, perms prms, perm_options opts,
185 error_code& ec);
186
187 path proximate(const path& p, error_code& ec);
188 path proximate(const path& p, const path& base = current_path());
189 path proximate(const path& p, const path& base, error_code &ec);
190
191 path read_symlink(const path& p);
192 path read_symlink(const path& p, error_code& ec);
193
194 path relative(const path& p, error_code& ec);
195 path relative(const path& p, const path& base=current_path());
196 path relative(const path& p, const path& base, error_code& ec);
197
198 bool remove(const path& p);
199 bool remove(const path& p, error_code& ec) noexcept;
200
201 uintmax_t remove_all(const path& p);
202 uintmax_t remove_all(const path& p, error_code& ec);
203
204 void rename(const path& from, const path& to);
205 void rename(const path& from, const path& to, error_code& ec) noexcept;
206
207 void resize_file(const path& p, uintmax_t size);
208 void resize_file(const path& p, uintmax_t size, error_code& ec) noexcept;
209
210 space_info space(const path& p);
211 space_info space(const path& p, error_code& ec) noexcept;
212
213 file_status status(const path& p);
214 file_status status(const path& p, error_code& ec) noexcept;
215
216 bool status_known(file_status s) noexcept;
217
218 file_status symlink_status(const path& p);
219 file_status symlink_status(const path& p, error_code& ec) noexcept;
220
221 path temp_directory_path();
222 path temp_directory_path(error_code& ec);
223
224 path weakly_canonical(path const& p);
225 path weakly_canonical(path const& p, error_code& ec);
226
227
228} } // namespaces std::filesystem
229
230*/
231
232#include <__config>
233#include <cstddef>
234#include <cstdlib>
235#include <chrono>
236#include <iterator>
237#include <iosfwd>
238#include <locale>
239#include <memory>
240#include <stack>
241#include <string>
242#include <system_error>
243#include <utility>
244#include <iomanip> // for quoted
245#include <string_view>
246#include <version>
247
248#include <__debug>
249
250#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
251#pragma GCC system_header
252#endif
253
254_LIBCPP_PUSH_MACROS
255#include <__undef_macros>
256
257#ifndef _LIBCPP_CXX03_LANG
258
259_LIBCPP_BEGIN_NAMESPACE_FILESYSTEM
260
261_LIBCPP_AVAILABILITY_FILESYSTEM_PUSH
262
263typedef chrono::time_point<_FilesystemClock> file_time_type;
264
265struct _LIBCPP_TYPE_VIS space_info {
266 uintmax_t capacity;
267 uintmax_t free;
268 uintmax_t available;
269};
270
271enum class _LIBCPP_ENUM_VIS file_type : signed char {
272 none = 0,
273 not_found = -1,
274 regular = 1,
275 directory = 2,
276 symlink = 3,
277 block = 4,
278 character = 5,
279 fifo = 6,
280 socket = 7,
281 unknown = 8
282};
283
284enum class _LIBCPP_ENUM_VIS perms : unsigned {
285 none = 0,
286
287 owner_read = 0400,
288 owner_write = 0200,
289 owner_exec = 0100,
290 owner_all = 0700,
291
292 group_read = 040,
293 group_write = 020,
294 group_exec = 010,
295 group_all = 070,
296
297 others_read = 04,
298 others_write = 02,
299 others_exec = 01,
300 others_all = 07,
301
302 all = 0777,
303
304 set_uid = 04000,
305 set_gid = 02000,
306 sticky_bit = 01000,
307 mask = 07777,
308 unknown = 0xFFFF,
309};
310
311_LIBCPP_INLINE_VISIBILITY
312inline constexpr perms operator&(perms _LHS, perms _RHS) {
313 return static_cast<perms>(static_cast<unsigned>(_LHS) &
314 static_cast<unsigned>(_RHS));
315}
316
317_LIBCPP_INLINE_VISIBILITY
318inline constexpr perms operator|(perms _LHS, perms _RHS) {
319 return static_cast<perms>(static_cast<unsigned>(_LHS) |
320 static_cast<unsigned>(_RHS));
321}
322
323_LIBCPP_INLINE_VISIBILITY
324inline constexpr perms operator^(perms _LHS, perms _RHS) {
325 return static_cast<perms>(static_cast<unsigned>(_LHS) ^
326 static_cast<unsigned>(_RHS));
327}
328
329_LIBCPP_INLINE_VISIBILITY
330inline constexpr perms operator~(perms _LHS) {
331 return static_cast<perms>(~static_cast<unsigned>(_LHS));
332}
333
334_LIBCPP_INLINE_VISIBILITY
335inline perms& operator&=(perms& _LHS, perms _RHS) { return _LHS = _LHS & _RHS; }
336
337_LIBCPP_INLINE_VISIBILITY
338inline perms& operator|=(perms& _LHS, perms _RHS) { return _LHS = _LHS | _RHS; }
339
340_LIBCPP_INLINE_VISIBILITY
341inline perms& operator^=(perms& _LHS, perms _RHS) { return _LHS = _LHS ^ _RHS; }
342
343enum class _LIBCPP_ENUM_VIS perm_options : unsigned char {
344 replace = 1,
345 add = 2,
346 remove = 4,
347 nofollow = 8
348};
349
350_LIBCPP_INLINE_VISIBILITY
351inline constexpr perm_options operator&(perm_options _LHS, perm_options _RHS) {
352 return static_cast<perm_options>(static_cast<unsigned>(_LHS) &
353 static_cast<unsigned>(_RHS));
354}
355
356_LIBCPP_INLINE_VISIBILITY
357inline constexpr perm_options operator|(perm_options _LHS, perm_options _RHS) {
358 return static_cast<perm_options>(static_cast<unsigned>(_LHS) |
359 static_cast<unsigned>(_RHS));
360}
361
362_LIBCPP_INLINE_VISIBILITY
363inline constexpr perm_options operator^(perm_options _LHS, perm_options _RHS) {
364 return static_cast<perm_options>(static_cast<unsigned>(_LHS) ^
365 static_cast<unsigned>(_RHS));
366}
367
368_LIBCPP_INLINE_VISIBILITY
369inline constexpr perm_options operator~(perm_options _LHS) {
370 return static_cast<perm_options>(~static_cast<unsigned>(_LHS));
371}
372
373_LIBCPP_INLINE_VISIBILITY
374inline perm_options& operator&=(perm_options& _LHS, perm_options _RHS) {
375 return _LHS = _LHS & _RHS;
376}
377
378_LIBCPP_INLINE_VISIBILITY
379inline perm_options& operator|=(perm_options& _LHS, perm_options _RHS) {
380 return _LHS = _LHS | _RHS;
381}
382
383_LIBCPP_INLINE_VISIBILITY
384inline perm_options& operator^=(perm_options& _LHS, perm_options _RHS) {
385 return _LHS = _LHS ^ _RHS;
386}
387
388enum class _LIBCPP_ENUM_VIS copy_options : unsigned short {
389 none = 0,
390 skip_existing = 1,
391 overwrite_existing = 2,
392 update_existing = 4,
393 recursive = 8,
394 copy_symlinks = 16,
395 skip_symlinks = 32,
396 directories_only = 64,
397 create_symlinks = 128,
398 create_hard_links = 256,
399 __in_recursive_copy = 512,
400};
401
402_LIBCPP_INLINE_VISIBILITY
403inline constexpr copy_options operator&(copy_options _LHS, copy_options _RHS) {
404 return static_cast<copy_options>(static_cast<unsigned short>(_LHS) &
405 static_cast<unsigned short>(_RHS));
406}
407
408_LIBCPP_INLINE_VISIBILITY
409inline constexpr copy_options operator|(copy_options _LHS, copy_options _RHS) {
410 return static_cast<copy_options>(static_cast<unsigned short>(_LHS) |
411 static_cast<unsigned short>(_RHS));
412}
413
414_LIBCPP_INLINE_VISIBILITY
415inline constexpr copy_options operator^(copy_options _LHS, copy_options _RHS) {
416 return static_cast<copy_options>(static_cast<unsigned short>(_LHS) ^
417 static_cast<unsigned short>(_RHS));
418}
419
420_LIBCPP_INLINE_VISIBILITY
421inline constexpr copy_options operator~(copy_options _LHS) {
422 return static_cast<copy_options>(~static_cast<unsigned short>(_LHS));
423}
424
425_LIBCPP_INLINE_VISIBILITY
426inline copy_options& operator&=(copy_options& _LHS, copy_options _RHS) {
427 return _LHS = _LHS & _RHS;
428}
429
430_LIBCPP_INLINE_VISIBILITY
431inline copy_options& operator|=(copy_options& _LHS, copy_options _RHS) {
432 return _LHS = _LHS | _RHS;
433}
434
435_LIBCPP_INLINE_VISIBILITY
436inline copy_options& operator^=(copy_options& _LHS, copy_options _RHS) {
437 return _LHS = _LHS ^ _RHS;
438}
439
440enum class _LIBCPP_ENUM_VIS directory_options : unsigned char {
441 none = 0,
442 follow_directory_symlink = 1,
443 skip_permission_denied = 2
444};
445
446_LIBCPP_INLINE_VISIBILITY
447inline constexpr directory_options operator&(directory_options _LHS,
448 directory_options _RHS) {
449 return static_cast<directory_options>(static_cast<unsigned char>(_LHS) &
450 static_cast<unsigned char>(_RHS));
451}
452
453_LIBCPP_INLINE_VISIBILITY
454inline constexpr directory_options operator|(directory_options _LHS,
455 directory_options _RHS) {
456 return static_cast<directory_options>(static_cast<unsigned char>(_LHS) |
457 static_cast<unsigned char>(_RHS));
458}
459
460_LIBCPP_INLINE_VISIBILITY
461inline constexpr directory_options operator^(directory_options _LHS,
462 directory_options _RHS) {
463 return static_cast<directory_options>(static_cast<unsigned char>(_LHS) ^
464 static_cast<unsigned char>(_RHS));
465}
466
467_LIBCPP_INLINE_VISIBILITY
468inline constexpr directory_options operator~(directory_options _LHS) {
469 return static_cast<directory_options>(~static_cast<unsigned char>(_LHS));
470}
471
472_LIBCPP_INLINE_VISIBILITY
473inline directory_options& operator&=(directory_options& _LHS,
474 directory_options _RHS) {
475 return _LHS = _LHS & _RHS;
476}
477
478_LIBCPP_INLINE_VISIBILITY
479inline directory_options& operator|=(directory_options& _LHS,
480 directory_options _RHS) {
481 return _LHS = _LHS | _RHS;
482}
483
484_LIBCPP_INLINE_VISIBILITY
485inline directory_options& operator^=(directory_options& _LHS,
486 directory_options _RHS) {
487 return _LHS = _LHS ^ _RHS;
488}
489
490class _LIBCPP_TYPE_VIS file_status {
491public:
492 // constructors
493 _LIBCPP_INLINE_VISIBILITY
494 file_status() noexcept : file_status(file_type::none) {}
495 _LIBCPP_INLINE_VISIBILITY
496 explicit file_status(file_type __ft, perms __prms = perms::unknown) noexcept
497 : __ft_(__ft),
498 __prms_(__prms) {}
499
500 file_status(const file_status&) noexcept = default;
501 file_status(file_status&&) noexcept = default;
502
503 _LIBCPP_INLINE_VISIBILITY
504 ~file_status() {}
505
506 file_status& operator=(const file_status&) noexcept = default;
507 file_status& operator=(file_status&&) noexcept = default;
508
509 // observers
510 _LIBCPP_INLINE_VISIBILITY
511 file_type type() const noexcept { return __ft_; }
512
513 _LIBCPP_INLINE_VISIBILITY
514 perms permissions() const noexcept { return __prms_; }
515
516 // modifiers
517 _LIBCPP_INLINE_VISIBILITY
518 void type(file_type __ft) noexcept { __ft_ = __ft; }
519
520 _LIBCPP_INLINE_VISIBILITY
521 void permissions(perms __p) noexcept { __prms_ = __p; }
522
523private:
524 file_type __ft_;
525 perms __prms_;
526};
527
528class _LIBCPP_TYPE_VIS directory_entry;
529
530template <class _Tp>
531struct __can_convert_char {
532 static const bool value = false;
533};
534template <class _Tp>
535struct __can_convert_char<const _Tp> : public __can_convert_char<_Tp> {};
536template <>
537struct __can_convert_char<char> {
538 static const bool value = true;
539 using __char_type = char;
540};
541template <>
542struct __can_convert_char<wchar_t> {
543 static const bool value = true;
544 using __char_type = wchar_t;
545};
546template <>
547struct __can_convert_char<char16_t> {
548 static const bool value = true;
549 using __char_type = char16_t;
550};
551template <>
552struct __can_convert_char<char32_t> {
553 static const bool value = true;
554 using __char_type = char32_t;
555};
556
557template <class _ECharT>
558typename enable_if<__can_convert_char<_ECharT>::value, bool>::type
559__is_separator(_ECharT __e) {
560 return __e == _ECharT('/');
561}
562
563struct _NullSentinal {};
564
565template <class _Tp>
566using _Void = void;
567
568template <class _Tp, class = void>
569struct __is_pathable_string : public false_type {};
570
571template <class _ECharT, class _Traits, class _Alloc>
572struct __is_pathable_string<
573 basic_string<_ECharT, _Traits, _Alloc>,
574 _Void<typename __can_convert_char<_ECharT>::__char_type> >
575 : public __can_convert_char<_ECharT> {
576 using _Str = basic_string<_ECharT, _Traits, _Alloc>;
577 using _Base = __can_convert_char<_ECharT>;
578 static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); }
579 static _ECharT const* __range_end(_Str const& __s) {
580 return __s.data() + __s.length();
581 }
582 static _ECharT __first_or_null(_Str const& __s) {
583 return __s.empty() ? _ECharT{} : __s[0];
584 }
585};
586
587template <class _ECharT, class _Traits>
588struct __is_pathable_string<
589 basic_string_view<_ECharT, _Traits>,
590 _Void<typename __can_convert_char<_ECharT>::__char_type> >
591 : public __can_convert_char<_ECharT> {
592 using _Str = basic_string_view<_ECharT, _Traits>;
593 using _Base = __can_convert_char<_ECharT>;
594 static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); }
595 static _ECharT const* __range_end(_Str const& __s) {
596 return __s.data() + __s.length();
597 }
598 static _ECharT __first_or_null(_Str const& __s) {
599 return __s.empty() ? _ECharT{} : __s[0];
600 }
601};
602
603template <class _Source, class _DS = typename decay<_Source>::type,
604 class _UnqualPtrType =
605 typename remove_const<typename remove_pointer<_DS>::type>::type,
606 bool _IsCharPtr = is_pointer<_DS>::value&&
607 __can_convert_char<_UnqualPtrType>::value>
608struct __is_pathable_char_array : false_type {};
609
610template <class _Source, class _ECharT, class _UPtr>
611struct __is_pathable_char_array<_Source, _ECharT*, _UPtr, true>
612 : __can_convert_char<typename remove_const<_ECharT>::type> {
613 using _Base = __can_convert_char<typename remove_const<_ECharT>::type>;
614
615 static _ECharT const* __range_begin(const _ECharT* __b) { return __b; }
616 static _ECharT const* __range_end(const _ECharT* __b) {
617 using _Iter = const _ECharT*;
618 const _ECharT __sentinal = _ECharT{};
619 _Iter __e = __b;
620 for (; *__e != __sentinal; ++__e)
621 ;
622 return __e;
623 }
624
625 static _ECharT __first_or_null(const _ECharT* __b) { return *__b; }
626};
627
628template <class _Iter, bool _IsIt = __is_cpp17_input_iterator<_Iter>::value,
629 class = void>
630struct __is_pathable_iter : false_type {};
631
632template <class _Iter>
633struct __is_pathable_iter<
634 _Iter, true,
635 _Void<typename __can_convert_char<
636 typename iterator_traits<_Iter>::value_type>::__char_type> >
637 : __can_convert_char<typename iterator_traits<_Iter>::value_type> {
638 using _ECharT = typename iterator_traits<_Iter>::value_type;
639 using _Base = __can_convert_char<_ECharT>;
640
641 static _Iter __range_begin(_Iter __b) { return __b; }
642 static _NullSentinal __range_end(_Iter) { return _NullSentinal{}; }
643
644 static _ECharT __first_or_null(_Iter __b) { return *__b; }
645};
646
647template <class _Tp, bool _IsStringT = __is_pathable_string<_Tp>::value,
648 bool _IsCharIterT = __is_pathable_char_array<_Tp>::value,
649 bool _IsIterT = !_IsCharIterT && __is_pathable_iter<_Tp>::value>
650struct __is_pathable : false_type {
651 static_assert(!_IsStringT && !_IsCharIterT && !_IsIterT, "Must all be false");
652};
653
654template <class _Tp>
655struct __is_pathable<_Tp, true, false, false> : __is_pathable_string<_Tp> {};
656
657template <class _Tp>
658struct __is_pathable<_Tp, false, true, false> : __is_pathable_char_array<_Tp> {
659};
660
661template <class _Tp>
662struct __is_pathable<_Tp, false, false, true> : __is_pathable_iter<_Tp> {};
663
664template <class _ECharT>
665struct _PathCVT {
666 static_assert(__can_convert_char<_ECharT>::value,
667 "Char type not convertible");
668
669 typedef __narrow_to_utf8<sizeof(_ECharT) * __CHAR_BIT__> _Narrower;
670
671 static void __append_range(string& __dest, _ECharT const* __b,
672 _ECharT const* __e) {
673 _Narrower()(back_inserter(__dest), __b, __e);
674 }
675
676 template <class _Iter>
677 static void __append_range(string& __dest, _Iter __b, _Iter __e) {
678 static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload");
679 if (__b == __e)
680 return;
681 basic_string<_ECharT> __tmp(__b, __e);
682 _Narrower()(back_inserter(__dest), __tmp.data(),
683 __tmp.data() + __tmp.length());
684 }
685
686 template <class _Iter>
687 static void __append_range(string& __dest, _Iter __b, _NullSentinal) {
688 static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload");
689 const _ECharT __sentinal = _ECharT{};
690 if (*__b == __sentinal)
691 return;
692 basic_string<_ECharT> __tmp;
693 for (; *__b != __sentinal; ++__b)
694 __tmp.push_back(*__b);
695 _Narrower()(back_inserter(__dest), __tmp.data(),
696 __tmp.data() + __tmp.length());
697 }
698
699 template <class _Source>
700 static void __append_source(string& __dest, _Source const& __s) {
701 using _Traits = __is_pathable<_Source>;
702 __append_range(__dest, _Traits::__range_begin(__s),
703 _Traits::__range_end(__s));
704 }
705};
706
707template <>
708struct _PathCVT<char> {
709
710 template <class _Iter>
711 static typename enable_if<__is_exactly_cpp17_input_iterator<_Iter>::value>::type
712 __append_range(string& __dest, _Iter __b, _Iter __e) {
713 for (; __b != __e; ++__b)
714 __dest.push_back(*__b);
715 }
716
717 template <class _Iter>
718 static typename enable_if<__is_cpp17_forward_iterator<_Iter>::value>::type
719 __append_range(string& __dest, _Iter __b, _Iter __e) {
720 __dest.__append_forward_unsafe(__b, __e);
721 }
722
723 template <class _Iter>
724 static void __append_range(string& __dest, _Iter __b, _NullSentinal) {
725 const char __sentinal = char{};
726 for (; *__b != __sentinal; ++__b)
727 __dest.push_back(*__b);
728 }
729
730 template <class _Source>
731 static void __append_source(string& __dest, _Source const& __s) {
732 using _Traits = __is_pathable<_Source>;
733 __append_range(__dest, _Traits::__range_begin(__s),
734 _Traits::__range_end(__s));
735 }
736};
737
738class _LIBCPP_TYPE_VIS path {
739 template <class _SourceOrIter, class _Tp = path&>
740 using _EnableIfPathable =
741 typename enable_if<__is_pathable<_SourceOrIter>::value, _Tp>::type;
742
743 template <class _Tp>
744 using _SourceChar = typename __is_pathable<_Tp>::__char_type;
745
746 template <class _Tp>
747 using _SourceCVT = _PathCVT<_SourceChar<_Tp> >;
748
749public:
750 typedef char value_type;
751 typedef basic_string<value_type> string_type;
752 typedef _VSTD::string_view __string_view;
753 static constexpr value_type preferred_separator = '/';
754
755 enum class _LIBCPP_ENUM_VIS format : unsigned char {
756 auto_format,
757 native_format,
758 generic_format
759 };
760
761 // constructors and destructor
762 _LIBCPP_INLINE_VISIBILITY path() noexcept {}
763 _LIBCPP_INLINE_VISIBILITY path(const path& __p) : __pn_(__p.__pn_) {}
764 _LIBCPP_INLINE_VISIBILITY path(path&& __p) noexcept
765 : __pn_(_VSTD::move(__p.__pn_)) {}
766
767 _LIBCPP_INLINE_VISIBILITY
768 path(string_type&& __s, format = format::auto_format) noexcept
769 : __pn_(_VSTD::move(__s)) {}
770
771 template <class _Source, class = _EnableIfPathable<_Source, void> >
772 path(const _Source& __src, format = format::auto_format) {
773 _SourceCVT<_Source>::__append_source(__pn_, __src);
774 }
775
776 template <class _InputIt>
777 path(_InputIt __first, _InputIt __last, format = format::auto_format) {
778 typedef typename iterator_traits<_InputIt>::value_type _ItVal;
779 _PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
780 }
781
782 // TODO Implement locale conversions.
783 template <class _Source, class = _EnableIfPathable<_Source, void> >
784 path(const _Source& __src, const locale& __loc, format = format::auto_format);
785 template <class _InputIt>
786 path(_InputIt __first, _InputIt _last, const locale& __loc,
787 format = format::auto_format);
788
789 _LIBCPP_INLINE_VISIBILITY
790 ~path() = default;
791
792 // assignments
793 _LIBCPP_INLINE_VISIBILITY
794 path& operator=(const path& __p) {
795 __pn_ = __p.__pn_;
796 return *this;
797 }
798
799 _LIBCPP_INLINE_VISIBILITY
800 path& operator=(path&& __p) noexcept {
801 __pn_ = _VSTD::move(__p.__pn_);
802 return *this;
803 }
804
805 template <class = void>
806 _LIBCPP_INLINE_VISIBILITY path& operator=(string_type&& __s) noexcept {
807 __pn_ = _VSTD::move(__s);
808 return *this;
809 }
810
811 _LIBCPP_INLINE_VISIBILITY
812 path& assign(string_type&& __s) noexcept {
813 __pn_ = _VSTD::move(__s);
814 return *this;
815 }
816
817 template <class _Source>
818 _LIBCPP_INLINE_VISIBILITY _EnableIfPathable<_Source>
819 operator=(const _Source& __src) {
820 return this->assign(__src);
821 }
822
823 template <class _Source>
824 _EnableIfPathable<_Source> assign(const _Source& __src) {
825 __pn_.clear();
826 _SourceCVT<_Source>::__append_source(__pn_, __src);
827 return *this;
828 }
829
830 template <class _InputIt>
831 path& assign(_InputIt __first, _InputIt __last) {
832 typedef typename iterator_traits<_InputIt>::value_type _ItVal;
833 __pn_.clear();
834 _PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
835 return *this;
836 }
837
838private:
839 template <class _ECharT>
840 static bool __source_is_absolute(_ECharT __first_or_null) {
841 return __is_separator(__first_or_null);
842 }
843
844public:
845 // appends
846 path& operator/=(const path& __p) {
847 if (__p.is_absolute()) {
848 __pn_ = __p.__pn_;
849 return *this;
850 }
851 if (has_filename())
852 __pn_ += preferred_separator;
853 __pn_ += __p.native();
854 return *this;
855 }
856
857 // FIXME: Use _LIBCPP_DIAGNOSE_WARNING to produce a diagnostic when __src
858 // is known at compile time to be "/' since the user almost certainly intended
859 // to append a separator instead of overwriting the path with "/"
860 template <class _Source>
861 _LIBCPP_INLINE_VISIBILITY _EnableIfPathable<_Source>
862 operator/=(const _Source& __src) {
863 return this->append(__src);
864 }
865
866 template <class _Source>
867 _EnableIfPathable<_Source> append(const _Source& __src) {
868 using _Traits = __is_pathable<_Source>;
869 using _CVT = _PathCVT<_SourceChar<_Source> >;
870 if (__source_is_absolute(_Traits::__first_or_null(__src)))
871 __pn_.clear();
872 else if (has_filename())
873 __pn_ += preferred_separator;
874 _CVT::__append_source(__pn_, __src);
875 return *this;
876 }
877
878 template <class _InputIt>
879 path& append(_InputIt __first, _InputIt __last) {
880 typedef typename iterator_traits<_InputIt>::value_type _ItVal;
881 static_assert(__can_convert_char<_ItVal>::value, "Must convertible");
882 using _CVT = _PathCVT<_ItVal>;
883 if (__first != __last && __source_is_absolute(*__first))
884 __pn_.clear();
885 else if (has_filename())
886 __pn_ += preferred_separator;
887 _CVT::__append_range(__pn_, __first, __last);
888 return *this;
889 }
890
891 // concatenation
892 _LIBCPP_INLINE_VISIBILITY
893 path& operator+=(const path& __x) {
894 __pn_ += __x.__pn_;
895 return *this;
896 }
897
898 _LIBCPP_INLINE_VISIBILITY
899 path& operator+=(const string_type& __x) {
900 __pn_ += __x;
901 return *this;
902 }
903
904 _LIBCPP_INLINE_VISIBILITY
905 path& operator+=(__string_view __x) {
906 __pn_ += __x;
907 return *this;
908 }
909
910 _LIBCPP_INLINE_VISIBILITY
911 path& operator+=(const value_type* __x) {
912 __pn_ += __x;
913 return *this;
914 }
915
916 _LIBCPP_INLINE_VISIBILITY
917 path& operator+=(value_type __x) {
918 __pn_ += __x;
919 return *this;
920 }
921
922 template <class _ECharT>
923 typename enable_if<__can_convert_char<_ECharT>::value, path&>::type
924 operator+=(_ECharT __x) {
925 basic_string<_ECharT> __tmp;
926 __tmp += __x;
927 _PathCVT<_ECharT>::__append_source(__pn_, __tmp);
928 return *this;
929 }
930
931 template <class _Source>
932 _EnableIfPathable<_Source> operator+=(const _Source& __x) {
933 return this->concat(__x);
934 }
935
936 template <class _Source>
937 _EnableIfPathable<_Source> concat(const _Source& __x) {
938 _SourceCVT<_Source>::__append_source(__pn_, __x);
939 return *this;
940 }
941
942 template <class _InputIt>
943 path& concat(_InputIt __first, _InputIt __last) {
944 typedef typename iterator_traits<_InputIt>::value_type _ItVal;
945 _PathCVT<_ItVal>::__append_range(__pn_, __first, __last);
946 return *this;
947 }
948
949 // modifiers
950 _LIBCPP_INLINE_VISIBILITY
951 void clear() noexcept { __pn_.clear(); }
952
953 path& make_preferred() { return *this; }
954
955 _LIBCPP_INLINE_VISIBILITY
956 path& remove_filename() {
957 auto __fname = __filename();
958 if (!__fname.empty())
959 __pn_.erase(__fname.data() - __pn_.data());
960 return *this;
961 }
962
963 path& replace_filename(const path& __replacement) {
964 remove_filename();
965 return (*this /= __replacement);
966 }
967
968 path& replace_extension(const path& __replacement = path());
969
970 _LIBCPP_INLINE_VISIBILITY
971 void swap(path& __rhs) noexcept { __pn_.swap(__rhs.__pn_); }
972
973 // private helper to allow reserving memory in the path
974 _LIBCPP_INLINE_VISIBILITY
975 void __reserve(size_t __s) { __pn_.reserve(__s); }
976
977 // native format observers
978 _LIBCPP_INLINE_VISIBILITY
979 const string_type& native() const noexcept { return __pn_; }
980
981 _LIBCPP_INLINE_VISIBILITY
982 const value_type* c_str() const noexcept { return __pn_.c_str(); }
983
984 _LIBCPP_INLINE_VISIBILITY operator string_type() const { return __pn_; }
985
986 template <class _ECharT, class _Traits = char_traits<_ECharT>,
987 class _Allocator = allocator<_ECharT> >
988 basic_string<_ECharT, _Traits, _Allocator>
989 string(const _Allocator& __a = _Allocator()) const {
990 using _CVT = __widen_from_utf8<sizeof(_ECharT) * __CHAR_BIT__>;
991 using _Str = basic_string<_ECharT, _Traits, _Allocator>;
992 _Str __s(__a);
993 __s.reserve(__pn_.size());
994 _CVT()(back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size());
995 return __s;
996 }
997
998 _LIBCPP_INLINE_VISIBILITY std::string string() const { return __pn_; }
999 _LIBCPP_INLINE_VISIBILITY std::wstring wstring() const {
1000 return string<wchar_t>();
1001 }
1002 _LIBCPP_INLINE_VISIBILITY std::string u8string() const { return __pn_; }
1003 _LIBCPP_INLINE_VISIBILITY std::u16string u16string() const {
1004 return string<char16_t>();
1005 }
1006 _LIBCPP_INLINE_VISIBILITY std::u32string u32string() const {
1007 return string<char32_t>();
1008 }
1009
1010 // generic format observers
1011 template <class _ECharT, class _Traits = char_traits<_ECharT>,
1012 class _Allocator = allocator<_ECharT> >
1013 basic_string<_ECharT, _Traits, _Allocator>
1014 generic_string(const _Allocator& __a = _Allocator()) const {
1015 return string<_ECharT, _Traits, _Allocator>(__a);
1016 }
1017
1018 std::string generic_string() const { return __pn_; }
1019 std::wstring generic_wstring() const { return string<wchar_t>(); }
1020 std::string generic_u8string() const { return __pn_; }
1021 std::u16string generic_u16string() const { return string<char16_t>(); }
1022 std::u32string generic_u32string() const { return string<char32_t>(); }
1023
1024private:
1025 int __compare(__string_view) const;
1026 __string_view __root_name() const;
1027 __string_view __root_directory() const;
1028 __string_view __root_path_raw() const;
1029 __string_view __relative_path() const;
1030 __string_view __parent_path() const;
1031 __string_view __filename() const;
1032 __string_view __stem() const;
1033 __string_view __extension() const;
1034
1035public:
1036 // compare
1037 _LIBCPP_INLINE_VISIBILITY int compare(const path& __p) const noexcept {
1038 return __compare(__p.__pn_);
1039 }
1040 _LIBCPP_INLINE_VISIBILITY int compare(const string_type& __s) const {
1041 return __compare(__s);
1042 }
1043 _LIBCPP_INLINE_VISIBILITY int compare(__string_view __s) const {
1044 return __compare(__s);
1045 }
1046 _LIBCPP_INLINE_VISIBILITY int compare(const value_type* __s) const {
1047 return __compare(__s);
1048 }
1049
1050 // decomposition
1051 _LIBCPP_INLINE_VISIBILITY path root_name() const {
1052 return string_type(__root_name());
1053 }
1054 _LIBCPP_INLINE_VISIBILITY path root_directory() const {
1055 return string_type(__root_directory());
1056 }
1057 _LIBCPP_INLINE_VISIBILITY path root_path() const {
1058 return root_name().append(string_type(__root_directory()));
1059 }
1060 _LIBCPP_INLINE_VISIBILITY path relative_path() const {
1061 return string_type(__relative_path());
1062 }
1063 _LIBCPP_INLINE_VISIBILITY path parent_path() const {
1064 return string_type(__parent_path());
1065 }
1066 _LIBCPP_INLINE_VISIBILITY path filename() const {
1067 return string_type(__filename());
1068 }
1069 _LIBCPP_INLINE_VISIBILITY path stem() const { return string_type(__stem()); }
1070 _LIBCPP_INLINE_VISIBILITY path extension() const {
1071 return string_type(__extension());
1072 }
1073
1074 // query
1075 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY bool
1076 empty() const noexcept {
1077 return __pn_.empty();
1078 }
1079
1080 _LIBCPP_INLINE_VISIBILITY bool has_root_name() const {
1081 return !__root_name().empty();
1082 }
1083 _LIBCPP_INLINE_VISIBILITY bool has_root_directory() const {
1084 return !__root_directory().empty();
1085 }
1086 _LIBCPP_INLINE_VISIBILITY bool has_root_path() const {
1087 return !__root_path_raw().empty();
1088 }
1089 _LIBCPP_INLINE_VISIBILITY bool has_relative_path() const {
1090 return !__relative_path().empty();
1091 }
1092 _LIBCPP_INLINE_VISIBILITY bool has_parent_path() const {
1093 return !__parent_path().empty();
1094 }
1095 _LIBCPP_INLINE_VISIBILITY bool has_filename() const {
1096 return !__filename().empty();
1097 }
1098 _LIBCPP_INLINE_VISIBILITY bool has_stem() const { return !__stem().empty(); }
1099 _LIBCPP_INLINE_VISIBILITY bool has_extension() const {
1100 return !__extension().empty();
1101 }
1102
1103 _LIBCPP_INLINE_VISIBILITY bool is_absolute() const {
1104 return has_root_directory();
1105 }
1106 _LIBCPP_INLINE_VISIBILITY bool is_relative() const { return !is_absolute(); }
1107
1108 // relative paths
1109 path lexically_normal() const;
1110 path lexically_relative(const path& __base) const;
1111
1112 _LIBCPP_INLINE_VISIBILITY path lexically_proximate(const path& __base) const {
1113 path __result = this->lexically_relative(__base);
1114 if (__result.native().empty())
1115 return *this;
1116 return __result;
1117 }
1118
1119 // iterators
1120 class _LIBCPP_TYPE_VIS iterator;
1121 typedef iterator const_iterator;
1122
1123 iterator begin() const;
1124 iterator end() const;
1125
1126 template <class _CharT, class _Traits>
1127 _LIBCPP_INLINE_VISIBILITY friend
1128 typename enable_if<is_same<_CharT, char>::value &&
1129 is_same<_Traits, char_traits<char> >::value,
1130 basic_ostream<_CharT, _Traits>&>::type
1131 operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) {
1132 __os << std::__quoted(__p.native());
1133 return __os;
1134 }
1135
1136 template <class _CharT, class _Traits>
1137 _LIBCPP_INLINE_VISIBILITY friend
1138 typename enable_if<!is_same<_CharT, char>::value ||
1139 !is_same<_Traits, char_traits<char> >::value,
1140 basic_ostream<_CharT, _Traits>&>::type
1141 operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) {
1142 __os << std::__quoted(__p.string<_CharT, _Traits>());
1143 return __os;
1144 }
1145
1146 template <class _CharT, class _Traits>
1147 _LIBCPP_INLINE_VISIBILITY friend basic_istream<_CharT, _Traits>&
1148 operator>>(basic_istream<_CharT, _Traits>& __is, path& __p) {
1149 basic_string<_CharT, _Traits> __tmp;
1150 __is >> __quoted(__tmp);
1151 __p = __tmp;
1152 return __is;
1153 }
1154
1155 friend _LIBCPP_INLINE_VISIBILITY bool operator==(const path& __lhs, const path& __rhs) noexcept {
1156 return __lhs.compare(__rhs) == 0;
1157 }
1158 friend _LIBCPP_INLINE_VISIBILITY bool operator!=(const path& __lhs, const path& __rhs) noexcept {
1159 return __lhs.compare(__rhs) != 0;
1160 }
1161 friend _LIBCPP_INLINE_VISIBILITY bool operator<(const path& __lhs, const path& __rhs) noexcept {
1162 return __lhs.compare(__rhs) < 0;
1163 }
1164 friend _LIBCPP_INLINE_VISIBILITY bool operator<=(const path& __lhs, const path& __rhs) noexcept {
1165 return __lhs.compare(__rhs) <= 0;
1166 }
1167 friend _LIBCPP_INLINE_VISIBILITY bool operator>(const path& __lhs, const path& __rhs) noexcept {
1168 return __lhs.compare(__rhs) > 0;
1169 }
1170 friend _LIBCPP_INLINE_VISIBILITY bool operator>=(const path& __lhs, const path& __rhs) noexcept {
1171 return __lhs.compare(__rhs) >= 0;
1172 }
1173
1174 friend _LIBCPP_INLINE_VISIBILITY path operator/(const path& __lhs,
1175 const path& __rhs) {
1176 path __result(__lhs);
1177 __result /= __rhs;
1178 return __result;
1179 }
1180private:
1181 inline _LIBCPP_INLINE_VISIBILITY path&
1182 __assign_view(__string_view const& __s) noexcept {
1183 __pn_ = string_type(__s);
1184 return *this;
1185 }
1186 string_type __pn_;
1187};
1188
1189inline _LIBCPP_INLINE_VISIBILITY void swap(path& __lhs, path& __rhs) noexcept {
1190 __lhs.swap(__rhs);
1191}
1192
1193_LIBCPP_FUNC_VIS
1194size_t hash_value(const path& __p) noexcept;
1195
1196template <class _Source>
1197_LIBCPP_INLINE_VISIBILITY
1198 typename enable_if<__is_pathable<_Source>::value, path>::type
1199 u8path(const _Source& __s) {
1200 static_assert(
1201 is_same<typename __is_pathable<_Source>::__char_type, char>::value,
1202 "u8path(Source const&) requires Source have a character type of type "
1203 "'char'");
1204 return path(__s);
1205}
1206
1207template <class _InputIt>
1208_LIBCPP_INLINE_VISIBILITY
1209 typename enable_if<__is_pathable<_InputIt>::value, path>::type
1210 u8path(_InputIt __f, _InputIt __l) {
1211 static_assert(
1212 is_same<typename __is_pathable<_InputIt>::__char_type, char>::value,
1213 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'");
1214 return path(__f, __l);
1215}
1216
1217class _LIBCPP_TYPE_VIS path::iterator {
1218public:
1219 enum _ParserState : unsigned char {
1220 _Singular,
1221 _BeforeBegin,
1222 _InRootName,
1223 _InRootDir,
1224 _InFilenames,
1225 _InTrailingSep,
1226 _AtEnd
1227 };
1228
1229public:
1230 typedef bidirectional_iterator_tag iterator_category;
1231
1232 typedef path value_type;
1233 typedef std::ptrdiff_t difference_type;
1234 typedef const path* pointer;
1235 typedef const path& reference;
1236
1237 typedef void
1238 __stashing_iterator_tag; // See reverse_iterator and __is_stashing_iterator
1239
1240public:
1241 _LIBCPP_INLINE_VISIBILITY
1242 iterator()
1243 : __stashed_elem_(), __path_ptr_(nullptr), __entry_(),
1244 __state_(_Singular) {}
1245
1246 iterator(const iterator&) = default;
1247 ~iterator() = default;
1248
1249 iterator& operator=(const iterator&) = default;
1250
1251 _LIBCPP_INLINE_VISIBILITY
1252 reference operator*() const { return __stashed_elem_; }
1253
1254 _LIBCPP_INLINE_VISIBILITY
1255 pointer operator->() const { return &__stashed_elem_; }
1256
1257 _LIBCPP_INLINE_VISIBILITY
1258 iterator& operator++() {
1259 _LIBCPP_ASSERT(__state_ != _Singular,
1260 "attempting to increment a singular iterator");
1261 _LIBCPP_ASSERT(__state_ != _AtEnd,
1262 "attempting to increment the end iterator");
1263 return __increment();
1264 }
1265
1266 _LIBCPP_INLINE_VISIBILITY
1267 iterator operator++(int) {
1268 iterator __it(*this);
1269 this->operator++();
1270 return __it;
1271 }
1272
1273 _LIBCPP_INLINE_VISIBILITY
1274 iterator& operator--() {
1275 _LIBCPP_ASSERT(__state_ != _Singular,
1276 "attempting to decrement a singular iterator");
1277 _LIBCPP_ASSERT(__entry_.data() != __path_ptr_->native().data(),
1278 "attempting to decrement the begin iterator");
1279 return __decrement();
1280 }
1281
1282 _LIBCPP_INLINE_VISIBILITY
1283 iterator operator--(int) {
1284 iterator __it(*this);
1285 this->operator--();
1286 return __it;
1287 }
1288
1289private:
1290 friend class path;
1291
1292 inline _LIBCPP_INLINE_VISIBILITY friend bool operator==(const iterator&,
1293 const iterator&);
1294
1295 iterator& __increment();
1296 iterator& __decrement();
1297
1298 path __stashed_elem_;
1299 const path* __path_ptr_;
1300 path::__string_view __entry_;
1301 _ParserState __state_;
1302};
1303
1304inline _LIBCPP_INLINE_VISIBILITY bool operator==(const path::iterator& __lhs,
1305 const path::iterator& __rhs) {
1306 return __lhs.__path_ptr_ == __rhs.__path_ptr_ &&
1307 __lhs.__entry_.data() == __rhs.__entry_.data();
1308}
1309
1310inline _LIBCPP_INLINE_VISIBILITY bool operator!=(const path::iterator& __lhs,
1311 const path::iterator& __rhs) {
1312 return !(__lhs == __rhs);
1313}
1314
1315// TODO(ldionne): We need to pop the pragma and push it again after
1316// filesystem_error to work around PR41078.
1317_LIBCPP_AVAILABILITY_FILESYSTEM_POP
1318
1319class _LIBCPP_AVAILABILITY_FILESYSTEM _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error {
1320public:
1321 _LIBCPP_INLINE_VISIBILITY
1322 filesystem_error(const string& __what, error_code __ec)
1323 : system_error(__ec, __what),
1324 __storage_(make_shared<_Storage>(path(), path())) {
1325 __create_what(0);
1326 }
1327
1328 _LIBCPP_INLINE_VISIBILITY
1329 filesystem_error(const string& __what, const path& __p1, error_code __ec)
1330 : system_error(__ec, __what),
1331 __storage_(make_shared<_Storage>(__p1, path())) {
1332 __create_what(1);
1333 }
1334
1335 _LIBCPP_INLINE_VISIBILITY
1336 filesystem_error(const string& __what, const path& __p1, const path& __p2,
1337 error_code __ec)
1338 : system_error(__ec, __what),
1339 __storage_(make_shared<_Storage>(__p1, __p2)) {
1340 __create_what(2);
1341 }
1342
1343 _LIBCPP_INLINE_VISIBILITY
1344 const path& path1() const noexcept { return __storage_->__p1_; }
1345
1346 _LIBCPP_INLINE_VISIBILITY
1347 const path& path2() const noexcept { return __storage_->__p2_; }
1348
1349 ~filesystem_error() override; // key function
1350
1351 _LIBCPP_INLINE_VISIBILITY
1352 const char* what() const noexcept override {
1353 return __storage_->__what_.c_str();
1354 }
1355
1356 void __create_what(int __num_paths);
1357
1358private:
1359 struct _LIBCPP_HIDDEN _Storage {
1360 _LIBCPP_INLINE_VISIBILITY
1361 _Storage(const path& __p1, const path& __p2) : __p1_(__p1), __p2_(__p2) {}
1362
1363 path __p1_;
1364 path __p2_;
1365 string __what_;
1366 };
1367 shared_ptr<_Storage> __storage_;
1368};
1369
1370_LIBCPP_AVAILABILITY_FILESYSTEM_PUSH
1371
1372template <class... _Args>
1373_LIBCPP_NORETURN inline _LIBCPP_INLINE_VISIBILITY
1374#ifndef _LIBCPP_NO_EXCEPTIONS
1375void __throw_filesystem_error(_Args&&... __args) {
1376 throw filesystem_error(std::forward<_Args>(__args)...);
1377}
1378#else
1379void __throw_filesystem_error(_Args&&...) {
1380 _VSTD::abort();
1381}
1382#endif
1383
1384// operational functions
1385
1386_LIBCPP_FUNC_VIS
1387path __absolute(const path&, error_code* __ec = nullptr);
1388_LIBCPP_FUNC_VIS
1389path __canonical(const path&, error_code* __ec = nullptr);
1390_LIBCPP_FUNC_VIS
1391void __copy(const path& __from, const path& __to, copy_options __opt,
1392 error_code* __ec = nullptr);
1393_LIBCPP_FUNC_VIS
1394bool __copy_file(const path& __from, const path& __to, copy_options __opt,
1395 error_code* __ec = nullptr);
1396_LIBCPP_FUNC_VIS
1397void __copy_symlink(const path& __existing_symlink, const path& __new_symlink,
1398 error_code* __ec = nullptr);
1399_LIBCPP_FUNC_VIS
1400bool __create_directories(const path& p, error_code* ec = nullptr);
1401_LIBCPP_FUNC_VIS
1402bool __create_directory(const path& p, error_code* ec = nullptr);
1403_LIBCPP_FUNC_VIS
1404bool __create_directory(const path& p, const path& attributes,
1405 error_code* ec = nullptr);
1406_LIBCPP_FUNC_VIS
1407void __create_directory_symlink(const path& __to, const path& __new_symlink,
1408 error_code* __ec = nullptr);
1409_LIBCPP_FUNC_VIS
1410void __create_hard_link(const path& __to, const path& __new_hard_link,
1411 error_code* __ec = nullptr);
1412_LIBCPP_FUNC_VIS
1413void __create_symlink(const path& __to, const path& __new_symlink,
1414 error_code* __ec = nullptr);
1415_LIBCPP_FUNC_VIS
1416path __current_path(error_code* __ec = nullptr);
1417_LIBCPP_FUNC_VIS
1418void __current_path(const path&, error_code* __ec = nullptr);
1419_LIBCPP_FUNC_VIS
1420bool __equivalent(const path&, const path&, error_code* __ec = nullptr);
1421_LIBCPP_FUNC_VIS
1422uintmax_t __file_size(const path&, error_code* __ec = nullptr);
1423_LIBCPP_FUNC_VIS
1424uintmax_t __hard_link_count(const path&, error_code* __ec = nullptr);
1425_LIBCPP_FUNC_VIS
1426bool __fs_is_empty(const path& p, error_code* ec = nullptr);
1427_LIBCPP_FUNC_VIS
1428file_time_type __last_write_time(const path& p, error_code* ec = nullptr);
1429_LIBCPP_FUNC_VIS
1430void __last_write_time(const path& p, file_time_type new_time,
1431 error_code* ec = nullptr);
1432_LIBCPP_FUNC_VIS
1433void __permissions(const path&, perms, perm_options, error_code* = nullptr);
1434_LIBCPP_FUNC_VIS
1435path __read_symlink(const path& p, error_code* ec = nullptr);
1436_LIBCPP_FUNC_VIS
1437bool __remove(const path& p, error_code* ec = nullptr);
1438_LIBCPP_FUNC_VIS
1439uintmax_t __remove_all(const path& p, error_code* ec = nullptr);
1440_LIBCPP_FUNC_VIS
1441void __rename(const path& from, const path& to, error_code* ec = nullptr);
1442_LIBCPP_FUNC_VIS
1443void __resize_file(const path& p, uintmax_t size, error_code* ec = nullptr);
1444_LIBCPP_FUNC_VIS
1445space_info __space(const path&, error_code* __ec = nullptr);
1446_LIBCPP_FUNC_VIS
1447file_status __status(const path&, error_code* __ec = nullptr);
1448_LIBCPP_FUNC_VIS
1449file_status __symlink_status(const path&, error_code* __ec = nullptr);
1450_LIBCPP_FUNC_VIS
1451path __system_complete(const path&, error_code* __ec = nullptr);
1452_LIBCPP_FUNC_VIS
1453path __temp_directory_path(error_code* __ec = nullptr);
1454_LIBCPP_FUNC_VIS
1455path __weakly_canonical(path const& __p, error_code* __ec = nullptr);
1456
1457inline _LIBCPP_INLINE_VISIBILITY path current_path() {
1458 return __current_path();
1459}
1460
1461inline _LIBCPP_INLINE_VISIBILITY path current_path(error_code& __ec) {
1462 return __current_path(&__ec);
1463}
1464
1465inline _LIBCPP_INLINE_VISIBILITY void current_path(const path& __p) {
1466 __current_path(__p);
1467}
1468
1469inline _LIBCPP_INLINE_VISIBILITY void current_path(const path& __p,
1470 error_code& __ec) noexcept {
1471 __current_path(__p, &__ec);
1472}
1473
1474inline _LIBCPP_INLINE_VISIBILITY path absolute(const path& __p) {
1475 return __absolute(__p);
1476}
1477
1478inline _LIBCPP_INLINE_VISIBILITY path absolute(const path& __p,
1479 error_code& __ec) {
1480 return __absolute(__p, &__ec);
1481}
1482
1483inline _LIBCPP_INLINE_VISIBILITY path canonical(const path& __p) {
1484 return __canonical(__p);
1485}
1486
1487inline _LIBCPP_INLINE_VISIBILITY path canonical(const path& __p,
1488 error_code& __ec) {
1489 return __canonical(__p, &__ec);
1490}
1491
1492inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from,
1493 const path& __to) {
1494 __copy(__from, __to, copy_options::none);
1495}
1496
1497inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to,
1498 error_code& __ec) {
1499 __copy(__from, __to, copy_options::none, &__ec);
1500}
1501
1502inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to,
1503 copy_options __opt) {
1504 __copy(__from, __to, __opt);
1505}
1506
1507inline _LIBCPP_INLINE_VISIBILITY void copy(const path& __from, const path& __to,
1508 copy_options __opt,
1509 error_code& __ec) {
1510 __copy(__from, __to, __opt, &__ec);
1511}
1512
1513inline _LIBCPP_INLINE_VISIBILITY bool copy_file(const path& __from,
1514 const path& __to) {
1515 return __copy_file(__from, __to, copy_options::none);
1516}
1517
1518inline _LIBCPP_INLINE_VISIBILITY bool
1519copy_file(const path& __from, const path& __to, error_code& __ec) {
1520 return __copy_file(__from, __to, copy_options::none, &__ec);
1521}
1522
1523inline _LIBCPP_INLINE_VISIBILITY bool
1524copy_file(const path& __from, const path& __to, copy_options __opt) {
1525 return __copy_file(__from, __to, __opt);
1526}
1527
1528inline _LIBCPP_INLINE_VISIBILITY bool copy_file(const path& __from,
1529 const path& __to,
1530 copy_options __opt,
1531 error_code& __ec) {
1532 return __copy_file(__from, __to, __opt, &__ec);
1533}
1534
1535inline _LIBCPP_INLINE_VISIBILITY void copy_symlink(const path& __existing,
1536 const path& __new) {
1537 __copy_symlink(__existing, __new);
1538}
1539
1540inline _LIBCPP_INLINE_VISIBILITY void
1541copy_symlink(const path& __ext, const path& __new, error_code& __ec) noexcept {
1542 __copy_symlink(__ext, __new, &__ec);
1543}
1544
1545inline _LIBCPP_INLINE_VISIBILITY bool create_directories(const path& __p) {
1546 return __create_directories(__p);
1547}
1548
1549inline _LIBCPP_INLINE_VISIBILITY bool create_directories(const path& __p,
1550 error_code& __ec) {
1551 return __create_directories(__p, &__ec);
1552}
1553
1554inline _LIBCPP_INLINE_VISIBILITY bool create_directory(const path& __p) {
1555 return __create_directory(__p);
1556}
1557
1558inline _LIBCPP_INLINE_VISIBILITY bool
1559create_directory(const path& __p, error_code& __ec) noexcept {
1560 return __create_directory(__p, &__ec);
1561}
1562
1563inline _LIBCPP_INLINE_VISIBILITY bool create_directory(const path& __p,
1564 const path& __attrs) {
1565 return __create_directory(__p, __attrs);
1566}
1567
1568inline _LIBCPP_INLINE_VISIBILITY bool
1569create_directory(const path& __p, const path& __attrs,
1570 error_code& __ec) noexcept {
1571 return __create_directory(__p, __attrs, &__ec);
1572}
1573
1574inline _LIBCPP_INLINE_VISIBILITY void
1575create_directory_symlink(const path& __to, const path& __new) {
1576 __create_directory_symlink(__to, __new);
1577}
1578
1579inline _LIBCPP_INLINE_VISIBILITY void
1580create_directory_symlink(const path& __to, const path& __new,
1581 error_code& __ec) noexcept {
1582 __create_directory_symlink(__to, __new, &__ec);
1583}
1584
1585inline _LIBCPP_INLINE_VISIBILITY void create_hard_link(const path& __to,
1586 const path& __new) {
1587 __create_hard_link(__to, __new);
1588}
1589
1590inline _LIBCPP_INLINE_VISIBILITY void
1591create_hard_link(const path& __to, const path& __new,
1592 error_code& __ec) noexcept {
1593 __create_hard_link(__to, __new, &__ec);
1594}
1595
1596inline _LIBCPP_INLINE_VISIBILITY void create_symlink(const path& __to,
1597 const path& __new) {
1598 __create_symlink(__to, __new);
1599}
1600
1601inline _LIBCPP_INLINE_VISIBILITY void
1602create_symlink(const path& __to, const path& __new, error_code& __ec) noexcept {
1603 return __create_symlink(__to, __new, &__ec);
1604}
1605
1606inline _LIBCPP_INLINE_VISIBILITY bool status_known(file_status __s) noexcept {
1607 return __s.type() != file_type::none;
1608}
1609
1610inline _LIBCPP_INLINE_VISIBILITY bool exists(file_status __s) noexcept {
1611 return status_known(__s) && __s.type() != file_type::not_found;
1612}
1613
1614inline _LIBCPP_INLINE_VISIBILITY bool exists(const path& __p) {
1615 return exists(__status(__p));
1616}
1617
1618inline _LIBCPP_INLINE_VISIBILITY bool exists(const path& __p,
1619 error_code& __ec) noexcept {
1620 auto __s = __status(__p, &__ec);
1621 if (status_known(__s))
1622 __ec.clear();
1623 return exists(__s);
1624}
1625
1626inline _LIBCPP_INLINE_VISIBILITY bool equivalent(const path& __p1,
1627 const path& __p2) {
1628 return __equivalent(__p1, __p2);
1629}
1630
1631inline _LIBCPP_INLINE_VISIBILITY bool
1632equivalent(const path& __p1, const path& __p2, error_code& __ec) noexcept {
1633 return __equivalent(__p1, __p2, &__ec);
1634}
1635
1636inline _LIBCPP_INLINE_VISIBILITY uintmax_t file_size(const path& __p) {
1637 return __file_size(__p);
1638}
1639
1640inline _LIBCPP_INLINE_VISIBILITY uintmax_t
1641file_size(const path& __p, error_code& __ec) noexcept {
1642 return __file_size(__p, &__ec);
1643}
1644
1645inline _LIBCPP_INLINE_VISIBILITY uintmax_t hard_link_count(const path& __p) {
1646 return __hard_link_count(__p);
1647}
1648
1649inline _LIBCPP_INLINE_VISIBILITY uintmax_t
1650hard_link_count(const path& __p, error_code& __ec) noexcept {
1651 return __hard_link_count(__p, &__ec);
1652}
1653
1654inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(file_status __s) noexcept {
1655 return __s.type() == file_type::block;
1656}
1657
1658inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(const path& __p) {
1659 return is_block_file(__status(__p));
1660}
1661
1662inline _LIBCPP_INLINE_VISIBILITY bool is_block_file(const path& __p,
1663 error_code& __ec) noexcept {
1664 return is_block_file(__status(__p, &__ec));
1665}
1666
1667inline _LIBCPP_INLINE_VISIBILITY bool
1668is_character_file(file_status __s) noexcept {
1669 return __s.type() == file_type::character;
1670}
1671
1672inline _LIBCPP_INLINE_VISIBILITY bool is_character_file(const path& __p) {
1673 return is_character_file(__status(__p));
1674}
1675
1676inline _LIBCPP_INLINE_VISIBILITY bool
1677is_character_file(const path& __p, error_code& __ec) noexcept {
1678 return is_character_file(__status(__p, &__ec));
1679}
1680
1681inline _LIBCPP_INLINE_VISIBILITY bool is_directory(file_status __s) noexcept {
1682 return __s.type() == file_type::directory;
1683}
1684
1685inline _LIBCPP_INLINE_VISIBILITY bool is_directory(const path& __p) {
1686 return is_directory(__status(__p));
1687}
1688
1689inline _LIBCPP_INLINE_VISIBILITY bool is_directory(const path& __p,
1690 error_code& __ec) noexcept {
1691 return is_directory(__status(__p, &__ec));
1692}
1693
1694inline _LIBCPP_INLINE_VISIBILITY bool is_empty(const path& __p) {
1695 return __fs_is_empty(__p);
1696}
1697
1698inline _LIBCPP_INLINE_VISIBILITY bool is_empty(const path& __p,
1699 error_code& __ec) {
1700 return __fs_is_empty(__p, &__ec);
1701}
1702
1703inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(file_status __s) noexcept {
1704 return __s.type() == file_type::fifo;
1705}
1706inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(const path& __p) {
1707 return is_fifo(__status(__p));
1708}
1709
1710inline _LIBCPP_INLINE_VISIBILITY bool is_fifo(const path& __p,
1711 error_code& __ec) noexcept {
1712 return is_fifo(__status(__p, &__ec));
1713}
1714
1715inline _LIBCPP_INLINE_VISIBILITY bool
1716is_regular_file(file_status __s) noexcept {
1717 return __s.type() == file_type::regular;
1718}
1719
1720inline _LIBCPP_INLINE_VISIBILITY bool is_regular_file(const path& __p) {
1721 return is_regular_file(__status(__p));
1722}
1723
1724inline _LIBCPP_INLINE_VISIBILITY bool
1725is_regular_file(const path& __p, error_code& __ec) noexcept {
1726 return is_regular_file(__status(__p, &__ec));
1727}
1728
1729inline _LIBCPP_INLINE_VISIBILITY bool is_socket(file_status __s) noexcept {
1730 return __s.type() == file_type::socket;
1731}
1732
1733inline _LIBCPP_INLINE_VISIBILITY bool is_socket(const path& __p) {
1734 return is_socket(__status(__p));
1735}
1736
1737inline _LIBCPP_INLINE_VISIBILITY bool is_socket(const path& __p,
1738 error_code& __ec) noexcept {
1739 return is_socket(__status(__p, &__ec));
1740}
1741
1742inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(file_status __s) noexcept {
1743 return __s.type() == file_type::symlink;
1744}
1745
1746inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(const path& __p) {
1747 return is_symlink(__symlink_status(__p));
1748}
1749
1750inline _LIBCPP_INLINE_VISIBILITY bool is_symlink(const path& __p,
1751 error_code& __ec) noexcept {
1752 return is_symlink(__symlink_status(__p, &__ec));
1753}
1754
1755inline _LIBCPP_INLINE_VISIBILITY bool is_other(file_status __s) noexcept {
1756 return exists(__s) && !is_regular_file(__s) && !is_directory(__s) &&
1757 !is_symlink(__s);
1758}
1759
1760inline _LIBCPP_INLINE_VISIBILITY bool is_other(const path& __p) {
1761 return is_other(__status(__p));
1762}
1763
1764inline _LIBCPP_INLINE_VISIBILITY bool is_other(const path& __p,
1765 error_code& __ec) noexcept {
1766 return is_other(__status(__p, &__ec));
1767}
1768
1769inline _LIBCPP_INLINE_VISIBILITY file_time_type
1770last_write_time(const path& __p) {
1771 return __last_write_time(__p);
1772}
1773
1774inline _LIBCPP_INLINE_VISIBILITY file_time_type
1775last_write_time(const path& __p, error_code& __ec) noexcept {
1776 return __last_write_time(__p, &__ec);
1777}
1778
1779inline _LIBCPP_INLINE_VISIBILITY void last_write_time(const path& __p,
1780 file_time_type __t) {
1781 __last_write_time(__p, __t);
1782}
1783
1784inline _LIBCPP_INLINE_VISIBILITY void
1785last_write_time(const path& __p, file_time_type __t,
1786 error_code& __ec) noexcept {
1787 __last_write_time(__p, __t, &__ec);
1788}
1789
1790inline _LIBCPP_INLINE_VISIBILITY void
1791permissions(const path& __p, perms __prms,
1792 perm_options __opts = perm_options::replace) {
1793 __permissions(__p, __prms, __opts);
1794}
1795
1796inline _LIBCPP_INLINE_VISIBILITY void permissions(const path& __p, perms __prms,
1797 error_code& __ec) noexcept {
1798 __permissions(__p, __prms, perm_options::replace, &__ec);
1799}
1800
1801inline _LIBCPP_INLINE_VISIBILITY void permissions(const path& __p, perms __prms,
1802 perm_options __opts,
1803 error_code& __ec) {
1804 __permissions(__p, __prms, __opts, &__ec);
1805}
1806
1807inline _LIBCPP_INLINE_VISIBILITY path proximate(const path& __p,
1808 const path& __base,
1809 error_code& __ec) {
1810 path __tmp = __weakly_canonical(__p, &__ec);
1811 if (__ec)
1812 return {};
1813 path __tmp_base = __weakly_canonical(__base, &__ec);
1814 if (__ec)
1815 return {};
1816 return __tmp.lexically_proximate(__tmp_base);
1817}
1818
1819inline _LIBCPP_INLINE_VISIBILITY path proximate(const path& __p,
1820 error_code& __ec) {
1821 return proximate(__p, current_path(), __ec);
1822}
1823
1824inline _LIBCPP_INLINE_VISIBILITY path
1825proximate(const path& __p, const path& __base = current_path()) {
1826 return __weakly_canonical(__p).lexically_proximate(
1827 __weakly_canonical(__base));
1828}
1829
1830inline _LIBCPP_INLINE_VISIBILITY path read_symlink(const path& __p) {
1831 return __read_symlink(__p);
1832}
1833
1834inline _LIBCPP_INLINE_VISIBILITY path read_symlink(const path& __p,
1835 error_code& __ec) {
1836 return __read_symlink(__p, &__ec);
1837}
1838
1839inline _LIBCPP_INLINE_VISIBILITY path relative(const path& __p,
1840 const path& __base,
1841 error_code& __ec) {
1842 path __tmp = __weakly_canonical(__p, &__ec);
1843 if (__ec)
1844 return path();
1845 path __tmpbase = __weakly_canonical(__base, &__ec);
1846 if (__ec)
1847 return path();
1848 return __tmp.lexically_relative(__tmpbase);
1849}
1850
1851inline _LIBCPP_INLINE_VISIBILITY path relative(const path& __p,
1852 error_code& __ec) {
1853 return relative(__p, current_path(), __ec);
1854}
1855
1856inline _LIBCPP_INLINE_VISIBILITY path
1857relative(const path& __p, const path& __base = current_path()) {
1858 return __weakly_canonical(__p).lexically_relative(__weakly_canonical(__base));
1859}
1860
1861inline _LIBCPP_INLINE_VISIBILITY bool remove(const path& __p) {
1862 return __remove(__p);
1863}
1864
1865inline _LIBCPP_INLINE_VISIBILITY bool remove(const path& __p,
1866 error_code& __ec) noexcept {
1867 return __remove(__p, &__ec);
1868}
1869
1870inline _LIBCPP_INLINE_VISIBILITY uintmax_t remove_all(const path& __p) {
1871 return __remove_all(__p);
1872}
1873
1874inline _LIBCPP_INLINE_VISIBILITY uintmax_t remove_all(const path& __p,
1875 error_code& __ec) {
1876 return __remove_all(__p, &__ec);
1877}
1878
1879inline _LIBCPP_INLINE_VISIBILITY void rename(const path& __from,
1880 const path& __to) {
1881 return __rename(__from, __to);
1882}
1883
1884inline _LIBCPP_INLINE_VISIBILITY void
1885rename(const path& __from, const path& __to, error_code& __ec) noexcept {
1886 return __rename(__from, __to, &__ec);
1887}
1888
1889inline _LIBCPP_INLINE_VISIBILITY void resize_file(const path& __p,
1890 uintmax_t __ns) {
1891 return __resize_file(__p, __ns);
1892}
1893
1894inline _LIBCPP_INLINE_VISIBILITY void
1895resize_file(const path& __p, uintmax_t __ns, error_code& __ec) noexcept {
1896 return __resize_file(__p, __ns, &__ec);
1897}
1898
1899inline _LIBCPP_INLINE_VISIBILITY space_info space(const path& __p) {
1900 return __space(__p);
1901}
1902
1903inline _LIBCPP_INLINE_VISIBILITY space_info space(const path& __p,
1904 error_code& __ec) noexcept {
1905 return __space(__p, &__ec);
1906}
1907
1908inline _LIBCPP_INLINE_VISIBILITY file_status status(const path& __p) {
1909 return __status(__p);
1910}
1911
1912inline _LIBCPP_INLINE_VISIBILITY file_status status(const path& __p,
1913 error_code& __ec) noexcept {
1914 return __status(__p, &__ec);
1915}
1916
1917inline _LIBCPP_INLINE_VISIBILITY file_status symlink_status(const path& __p) {
1918 return __symlink_status(__p);
1919}
1920
1921inline _LIBCPP_INLINE_VISIBILITY file_status
1922symlink_status(const path& __p, error_code& __ec) noexcept {
1923 return __symlink_status(__p, &__ec);
1924}
1925
1926inline _LIBCPP_INLINE_VISIBILITY path temp_directory_path() {
1927 return __temp_directory_path();
1928}
1929
1930inline _LIBCPP_INLINE_VISIBILITY path temp_directory_path(error_code& __ec) {
1931 return __temp_directory_path(&__ec);
1932}
1933
1934inline _LIBCPP_INLINE_VISIBILITY path weakly_canonical(path const& __p) {
1935 return __weakly_canonical(__p);
1936}
1937
1938inline _LIBCPP_INLINE_VISIBILITY path weakly_canonical(path const& __p,
1939 error_code& __ec) {
1940 return __weakly_canonical(__p, &__ec);
1941}
1942
1943class directory_iterator;
1944class recursive_directory_iterator;
1945class _LIBCPP_HIDDEN __dir_stream;
1946
1947class directory_entry {
1948 typedef _VSTD_FS::path _Path;
1949
1950public:
1951 // constructors and destructors
1952 directory_entry() noexcept = default;
1953 directory_entry(directory_entry const&) = default;
1954 directory_entry(directory_entry&&) noexcept = default;
1955
1956 _LIBCPP_INLINE_VISIBILITY
1957 explicit directory_entry(_Path const& __p) : __p_(__p) {
1958 error_code __ec;
1959 __refresh(&__ec);
1960 }
1961
1962 _LIBCPP_INLINE_VISIBILITY
1963 directory_entry(_Path const& __p, error_code& __ec) : __p_(__p) {
1964 __refresh(&__ec);
1965 }
1966
1967 ~directory_entry() {}
1968
1969 directory_entry& operator=(directory_entry const&) = default;
1970 directory_entry& operator=(directory_entry&&) noexcept = default;
1971
1972 _LIBCPP_INLINE_VISIBILITY
1973 void assign(_Path const& __p) {
1974 __p_ = __p;
1975 error_code __ec;
1976 __refresh(&__ec);
1977 }
1978
1979 _LIBCPP_INLINE_VISIBILITY
1980 void assign(_Path const& __p, error_code& __ec) {
1981 __p_ = __p;
1982 __refresh(&__ec);
1983 }
1984
1985 _LIBCPP_INLINE_VISIBILITY
1986 void replace_filename(_Path const& __p) {
1987 __p_.replace_filename(__p);
1988 error_code __ec;
1989 __refresh(&__ec);
1990 }
1991
1992 _LIBCPP_INLINE_VISIBILITY
1993 void replace_filename(_Path const& __p, error_code& __ec) {
1994 __p_ = __p_.parent_path() / __p;
1995 __refresh(&__ec);
1996 }
1997
1998 _LIBCPP_INLINE_VISIBILITY
1999 void refresh() { __refresh(); }
2000
2001 _LIBCPP_INLINE_VISIBILITY
2002 void refresh(error_code& __ec) noexcept { __refresh(&__ec); }
2003
2004 _LIBCPP_INLINE_VISIBILITY
2005 _Path const& path() const noexcept { return __p_; }
2006
2007 _LIBCPP_INLINE_VISIBILITY
2008 operator const _Path&() const noexcept { return __p_; }
2009
2010 _LIBCPP_INLINE_VISIBILITY
2011 bool exists() const { return _VSTD_FS::exists(file_status{__get_ft()}); }
2012
2013 _LIBCPP_INLINE_VISIBILITY
2014 bool exists(error_code& __ec) const noexcept {
2015 return _VSTD_FS::exists(file_status{__get_ft(&__ec)});
2016 }
2017
2018 _LIBCPP_INLINE_VISIBILITY
2019 bool is_block_file() const { return __get_ft() == file_type::block; }
2020
2021 _LIBCPP_INLINE_VISIBILITY
2022 bool is_block_file(error_code& __ec) const noexcept {
2023 return __get_ft(&__ec) == file_type::block;
2024 }
2025
2026 _LIBCPP_INLINE_VISIBILITY
2027 bool is_character_file() const { return __get_ft() == file_type::character; }
2028
2029 _LIBCPP_INLINE_VISIBILITY
2030 bool is_character_file(error_code& __ec) const noexcept {
2031 return __get_ft(&__ec) == file_type::character;
2032 }
2033
2034 _LIBCPP_INLINE_VISIBILITY
2035 bool is_directory() const { return __get_ft() == file_type::directory; }
2036
2037 _LIBCPP_INLINE_VISIBILITY
2038 bool is_directory(error_code& __ec) const noexcept {
2039 return __get_ft(&__ec) == file_type::directory;
2040 }
2041
2042 _LIBCPP_INLINE_VISIBILITY
2043 bool is_fifo() const { return __get_ft() == file_type::fifo; }
2044
2045 _LIBCPP_INLINE_VISIBILITY
2046 bool is_fifo(error_code& __ec) const noexcept {
2047 return __get_ft(&__ec) == file_type::fifo;
2048 }
2049
2050 _LIBCPP_INLINE_VISIBILITY
2051 bool is_other() const { return _VSTD_FS::is_other(file_status{__get_ft()}); }
2052
2053 _LIBCPP_INLINE_VISIBILITY
2054 bool is_other(error_code& __ec) const noexcept {
2055 return _VSTD_FS::is_other(file_status{__get_ft(&__ec)});
2056 }
2057
2058 _LIBCPP_INLINE_VISIBILITY
2059 bool is_regular_file() const { return __get_ft() == file_type::regular; }
2060
2061 _LIBCPP_INLINE_VISIBILITY
2062 bool is_regular_file(error_code& __ec) const noexcept {
2063 return __get_ft(&__ec) == file_type::regular;
2064 }
2065
2066 _LIBCPP_INLINE_VISIBILITY
2067 bool is_socket() const { return __get_ft() == file_type::socket; }
2068
2069 _LIBCPP_INLINE_VISIBILITY
2070 bool is_socket(error_code& __ec) const noexcept {
2071 return __get_ft(&__ec) == file_type::socket;
2072 }
2073
2074 _LIBCPP_INLINE_VISIBILITY
2075 bool is_symlink() const { return __get_sym_ft() == file_type::symlink; }
2076
2077 _LIBCPP_INLINE_VISIBILITY
2078 bool is_symlink(error_code& __ec) const noexcept {
2079 return __get_sym_ft(&__ec) == file_type::symlink;
2080 }
2081 _LIBCPP_INLINE_VISIBILITY
2082 uintmax_t file_size() const { return __get_size(); }
2083
2084 _LIBCPP_INLINE_VISIBILITY
2085 uintmax_t file_size(error_code& __ec) const noexcept {
2086 return __get_size(&__ec);
2087 }
2088
2089 _LIBCPP_INLINE_VISIBILITY
2090 uintmax_t hard_link_count() const { return __get_nlink(); }
2091
2092 _LIBCPP_INLINE_VISIBILITY
2093 uintmax_t hard_link_count(error_code& __ec) const noexcept {
2094 return __get_nlink(&__ec);
2095 }
2096
2097 _LIBCPP_INLINE_VISIBILITY
2098 file_time_type last_write_time() const { return __get_write_time(); }
2099
2100 _LIBCPP_INLINE_VISIBILITY
2101 file_time_type last_write_time(error_code& __ec) const noexcept {
2102 return __get_write_time(&__ec);
2103 }
2104
2105 _LIBCPP_INLINE_VISIBILITY
2106 file_status status() const { return __get_status(); }
2107
2108 _LIBCPP_INLINE_VISIBILITY
2109 file_status status(error_code& __ec) const noexcept {
2110 return __get_status(&__ec);
2111 }
2112
2113 _LIBCPP_INLINE_VISIBILITY
2114 file_status symlink_status() const { return __get_symlink_status(); }
2115
2116 _LIBCPP_INLINE_VISIBILITY
2117 file_status symlink_status(error_code& __ec) const noexcept {
2118 return __get_symlink_status(&__ec);
2119 }
2120
2121 _LIBCPP_INLINE_VISIBILITY
2122 bool operator<(directory_entry const& __rhs) const noexcept {
2123 return __p_ < __rhs.__p_;
2124 }
2125
2126 _LIBCPP_INLINE_VISIBILITY
2127 bool operator==(directory_entry const& __rhs) const noexcept {
2128 return __p_ == __rhs.__p_;
2129 }
2130
2131 _LIBCPP_INLINE_VISIBILITY
2132 bool operator!=(directory_entry const& __rhs) const noexcept {
2133 return __p_ != __rhs.__p_;
2134 }
2135
2136 _LIBCPP_INLINE_VISIBILITY
2137 bool operator<=(directory_entry const& __rhs) const noexcept {
2138 return __p_ <= __rhs.__p_;
2139 }
2140
2141 _LIBCPP_INLINE_VISIBILITY
2142 bool operator>(directory_entry const& __rhs) const noexcept {
2143 return __p_ > __rhs.__p_;
2144 }
2145
2146 _LIBCPP_INLINE_VISIBILITY
2147 bool operator>=(directory_entry const& __rhs) const noexcept {
2148 return __p_ >= __rhs.__p_;
2149 }
2150
2151private:
2152 friend class directory_iterator;
2153 friend class recursive_directory_iterator;
2154 friend class __dir_stream;
2155
2156 enum _CacheType : unsigned char {
2157 _Empty,
2158 _IterSymlink,
2159 _IterNonSymlink,
2160 _RefreshSymlink,
2161 _RefreshSymlinkUnresolved,
2162 _RefreshNonSymlink
2163 };
2164
2165 struct __cached_data {
2166 uintmax_t __size_;
2167 uintmax_t __nlink_;
2168 file_time_type __write_time_;
2169 perms __sym_perms_;
2170 perms __non_sym_perms_;
2171 file_type __type_;
2172 _CacheType __cache_type_;
2173
2174 _LIBCPP_INLINE_VISIBILITY
2175 __cached_data() noexcept { __reset(); }
2176
2177 _LIBCPP_INLINE_VISIBILITY
2178 void __reset() {
2179 __cache_type_ = _Empty;
2180 __type_ = file_type::none;
2181 __sym_perms_ = __non_sym_perms_ = perms::unknown;
2182 __size_ = __nlink_ = uintmax_t(-1);
2183 __write_time_ = file_time_type::min();
2184 }
2185 };
2186
2187 _LIBCPP_INLINE_VISIBILITY
2188 static __cached_data __create_iter_result(file_type __ft) {
2189 __cached_data __data;
2190 __data.__type_ = __ft;
2191 __data.__cache_type_ = [&]() {
2192 switch (__ft) {
2193 case file_type::none:
2194 return _Empty;
2195 case file_type::symlink:
2196 return _IterSymlink;
2197 default:
2198 return _IterNonSymlink;
2199 }
2200 }();
2201 return __data;
2202 }
2203
2204 _LIBCPP_INLINE_VISIBILITY
2205 void __assign_iter_entry(_Path&& __p, __cached_data __dt) {
2206 __p_ = std::move(__p);
2207 __data_ = __dt;
2208 }
2209
2210 _LIBCPP_FUNC_VIS
2211 error_code __do_refresh() noexcept;
2212
2213 _LIBCPP_INLINE_VISIBILITY
2214 static bool __is_dne_error(error_code const& __ec) {
2215 if (!__ec)
2216 return true;
2217 switch (static_cast<errc>(__ec.value())) {
2218 case errc::no_such_file_or_directory:
2219 case errc::not_a_directory:
2220 return true;
2221 default:
2222 return false;
2223 }
2224 }
2225
2226 _LIBCPP_INLINE_VISIBILITY
2227 void __handle_error(const char* __msg, error_code* __dest_ec,
2228 error_code const& __ec, bool __allow_dne = false) const {
2229 if (__dest_ec) {
2230 *__dest_ec = __ec;
2231 return;
2232 }
2233 if (__ec && (!__allow_dne || !__is_dne_error(__ec)))
2234 __throw_filesystem_error(__msg, __p_, __ec);
2235 }
2236
2237 _LIBCPP_INLINE_VISIBILITY
2238 void __refresh(error_code* __ec = nullptr) {
2239 __handle_error("in directory_entry::refresh", __ec, __do_refresh(),
2240 /*allow_dne*/ true);
2241 }
2242
2243 _LIBCPP_INLINE_VISIBILITY
2244 file_type __get_sym_ft(error_code* __ec = nullptr) const {
2245 switch (__data_.__cache_type_) {
2246 case _Empty:
2247 return __symlink_status(__p_, __ec).type();
2248 case _IterSymlink:
2249 case _RefreshSymlink:
2250 case _RefreshSymlinkUnresolved:
2251 if (__ec)
2252 __ec->clear();
2253 return file_type::symlink;
2254 case _IterNonSymlink:
2255 case _RefreshNonSymlink:
2256 file_status __st(__data_.__type_);
2257 if (__ec && !_VSTD_FS::exists(__st))
2258 *__ec = make_error_code(errc::no_such_file_or_directory);
2259 else if (__ec)
2260 __ec->clear();
2261 return __data_.__type_;
2262 }
2263 _LIBCPP_UNREACHABLE();
2264 }
2265
2266 _LIBCPP_INLINE_VISIBILITY
2267 file_type __get_ft(error_code* __ec = nullptr) const {
2268 switch (__data_.__cache_type_) {
2269 case _Empty:
2270 case _IterSymlink:
2271 case _RefreshSymlinkUnresolved:
2272 return __status(__p_, __ec).type();
2273 case _IterNonSymlink:
2274 case _RefreshNonSymlink:
2275 case _RefreshSymlink: {
2276 file_status __st(__data_.__type_);
2277 if (__ec && !_VSTD_FS::exists(__st))
2278 *__ec = make_error_code(errc::no_such_file_or_directory);
2279 else if (__ec)
2280 __ec->clear();
2281 return __data_.__type_;
2282 }
2283 }
2284 _LIBCPP_UNREACHABLE();
2285 }
2286
2287 _LIBCPP_INLINE_VISIBILITY
2288 file_status __get_status(error_code* __ec = nullptr) const {
2289 switch (__data_.__cache_type_) {
2290 case _Empty:
2291 case _IterNonSymlink:
2292 case _IterSymlink:
2293 case _RefreshSymlinkUnresolved:
2294 return __status(__p_, __ec);
2295 case _RefreshNonSymlink:
2296 case _RefreshSymlink:
2297 return file_status(__get_ft(__ec), __data_.__non_sym_perms_);
2298 }
2299 _LIBCPP_UNREACHABLE();
2300 }
2301
2302 _LIBCPP_INLINE_VISIBILITY
2303 file_status __get_symlink_status(error_code* __ec = nullptr) const {
2304 switch (__data_.__cache_type_) {
2305 case _Empty:
2306 case _IterNonSymlink:
2307 case _IterSymlink:
2308 return __symlink_status(__p_, __ec);
2309 case _RefreshNonSymlink:
2310 return file_status(__get_sym_ft(__ec), __data_.__non_sym_perms_);
2311 case _RefreshSymlink:
2312 case _RefreshSymlinkUnresolved:
2313 return file_status(__get_sym_ft(__ec), __data_.__sym_perms_);
2314 }
2315 _LIBCPP_UNREACHABLE();
2316 }
2317
2318 _LIBCPP_INLINE_VISIBILITY
2319 uintmax_t __get_size(error_code* __ec = nullptr) const {
2320 switch (__data_.__cache_type_) {
2321 case _Empty:
2322 case _IterNonSymlink:
2323 case _IterSymlink:
2324 case _RefreshSymlinkUnresolved:
2325 return _VSTD_FS::__file_size(__p_, __ec);
2326 case _RefreshSymlink:
2327 case _RefreshNonSymlink: {
2328 error_code __m_ec;
2329 file_status __st(__get_ft(&__m_ec));
2330 __handle_error("in directory_entry::file_size", __ec, __m_ec);
2331 if (_VSTD_FS::exists(__st) && !_VSTD_FS::is_regular_file(__st)) {
2332 errc __err_kind = _VSTD_FS::is_directory(__st) ? errc::is_a_directory
2333 : errc::not_supported;
2334 __handle_error("in directory_entry::file_size", __ec,
2335 make_error_code(__err_kind));
2336 }
2337 return __data_.__size_;
2338 }
2339 }
2340 _LIBCPP_UNREACHABLE();
2341 }
2342
2343 _LIBCPP_INLINE_VISIBILITY
2344 uintmax_t __get_nlink(error_code* __ec = nullptr) const {
2345 switch (__data_.__cache_type_) {
2346 case _Empty:
2347 case _IterNonSymlink:
2348 case _IterSymlink:
2349 case _RefreshSymlinkUnresolved:
2350 return _VSTD_FS::__hard_link_count(__p_, __ec);
2351 case _RefreshSymlink:
2352 case _RefreshNonSymlink: {
2353 error_code __m_ec;
2354 (void)__get_ft(&__m_ec);
2355 __handle_error("in directory_entry::hard_link_count", __ec, __m_ec);
2356 return __data_.__nlink_;
2357 }
2358 }
2359 _LIBCPP_UNREACHABLE();
2360 }
2361
2362 _LIBCPP_INLINE_VISIBILITY
2363 file_time_type __get_write_time(error_code* __ec = nullptr) const {
2364 switch (__data_.__cache_type_) {
2365 case _Empty:
2366 case _IterNonSymlink:
2367 case _IterSymlink:
2368 case _RefreshSymlinkUnresolved:
2369 return _VSTD_FS::__last_write_time(__p_, __ec);
2370 case _RefreshSymlink:
2371 case _RefreshNonSymlink: {
2372 error_code __m_ec;
2373 file_status __st(__get_ft(&__m_ec));
2374 __handle_error("in directory_entry::last_write_time", __ec, __m_ec);
2375 if (_VSTD_FS::exists(__st) &&
2376 __data_.__write_time_ == file_time_type::min())
2377 __handle_error("in directory_entry::last_write_time", __ec,
2378 make_error_code(errc::value_too_large));
2379 return __data_.__write_time_;
2380 }
2381 }
2382 _LIBCPP_UNREACHABLE();
2383 }
2384
2385private:
2386 _Path __p_;
2387 __cached_data __data_;
2388};
2389
2390class __dir_element_proxy {
2391public:
2392 inline _LIBCPP_INLINE_VISIBILITY directory_entry operator*() {
2393 return _VSTD::move(__elem_);
2394 }
2395
2396private:
2397 friend class directory_iterator;
2398 friend class recursive_directory_iterator;
2399 explicit __dir_element_proxy(directory_entry const& __e) : __elem_(__e) {}
2400 __dir_element_proxy(__dir_element_proxy&& __o)
2401 : __elem_(_VSTD::move(__o.__elem_)) {}
2402 directory_entry __elem_;
2403};
2404
2405class directory_iterator {
2406public:
2407 typedef directory_entry value_type;
2408 typedef ptrdiff_t difference_type;
2409 typedef value_type const* pointer;
2410 typedef value_type const& reference;
2411 typedef input_iterator_tag iterator_category;
2412
2413public:
2414 //ctor & dtor
2415 directory_iterator() noexcept {}
2416
2417 explicit directory_iterator(const path& __p)
2418 : directory_iterator(__p, nullptr) {}
2419
2420 directory_iterator(const path& __p, directory_options __opts)
2421 : directory_iterator(__p, nullptr, __opts) {}
2422
2423 directory_iterator(const path& __p, error_code& __ec)
2424 : directory_iterator(__p, &__ec) {}
2425
2426 directory_iterator(const path& __p, directory_options __opts,
2427 error_code& __ec)
2428 : directory_iterator(__p, &__ec, __opts) {}
2429
2430 directory_iterator(const directory_iterator&) = default;
2431 directory_iterator(directory_iterator&&) = default;
2432 directory_iterator& operator=(const directory_iterator&) = default;
2433
2434 directory_iterator& operator=(directory_iterator&& __o) noexcept {
2435 // non-default implementation provided to support self-move assign.
2436 if (this != &__o) {
2437 __imp_ = _VSTD::move(__o.__imp_);
2438 }
2439 return *this;
2440 }
2441
2442 ~directory_iterator() = default;
2443
2444 const directory_entry& operator*() const {
2445 _LIBCPP_ASSERT(__imp_, "The end iterator cannot be dereferenced");
2446 return __dereference();
2447 }
2448
2449 const directory_entry* operator->() const { return &**this; }
2450
2451 directory_iterator& operator++() { return __increment(); }
2452
2453 __dir_element_proxy operator++(int) {
2454 __dir_element_proxy __p(**this);
2455 __increment();
2456 return __p;
2457 }
2458
2459 directory_iterator& increment(error_code& __ec) { return __increment(&__ec); }
2460
2461private:
2462 inline _LIBCPP_INLINE_VISIBILITY friend bool
2463 operator==(const directory_iterator& __lhs,
2464 const directory_iterator& __rhs) noexcept;
2465
2466 // construct the dir_stream
2467 _LIBCPP_FUNC_VIS
2468 directory_iterator(const path&, error_code*,
2469 directory_options = directory_options::none);
2470
2471 _LIBCPP_FUNC_VIS
2472 directory_iterator& __increment(error_code* __ec = nullptr);
2473
2474 _LIBCPP_FUNC_VIS
2475 const directory_entry& __dereference() const;
2476
2477private:
2478 shared_ptr<__dir_stream> __imp_;
2479};
2480
2481inline _LIBCPP_INLINE_VISIBILITY bool
2482operator==(const directory_iterator& __lhs,
2483 const directory_iterator& __rhs) noexcept {
2484 return __lhs.__imp_ == __rhs.__imp_;
2485}
2486
2487inline _LIBCPP_INLINE_VISIBILITY bool
2488operator!=(const directory_iterator& __lhs,
2489 const directory_iterator& __rhs) noexcept {
2490 return !(__lhs == __rhs);
2491}
2492
2493// enable directory_iterator range-based for statements
2494inline _LIBCPP_INLINE_VISIBILITY directory_iterator
2495begin(directory_iterator __iter) noexcept {
2496 return __iter;
2497}
2498
2499inline _LIBCPP_INLINE_VISIBILITY directory_iterator
2500end(const directory_iterator&) noexcept {
2501 return directory_iterator();
2502}
2503
2504class recursive_directory_iterator {
2505public:
2506 using value_type = directory_entry;
2507 using difference_type = std::ptrdiff_t;
2508 using pointer = directory_entry const*;
2509 using reference = directory_entry const&;
2510 using iterator_category = std::input_iterator_tag;
2511
2512public:
2513 // constructors and destructor
2514 _LIBCPP_INLINE_VISIBILITY
2515 recursive_directory_iterator() noexcept : __rec_(false) {}
2516
2517 _LIBCPP_INLINE_VISIBILITY
2518 explicit recursive_directory_iterator(
2519 const path& __p, directory_options __xoptions = directory_options::none)
2520 : recursive_directory_iterator(__p, __xoptions, nullptr) {}
2521
2522 _LIBCPP_INLINE_VISIBILITY
2523 recursive_directory_iterator(const path& __p, directory_options __xoptions,
2524 error_code& __ec)
2525 : recursive_directory_iterator(__p, __xoptions, &__ec) {}
2526
2527 _LIBCPP_INLINE_VISIBILITY
2528 recursive_directory_iterator(const path& __p, error_code& __ec)
2529 : recursive_directory_iterator(__p, directory_options::none, &__ec) {}
2530
2531 recursive_directory_iterator(const recursive_directory_iterator&) = default;
2532 recursive_directory_iterator(recursive_directory_iterator&&) = default;
2533
2534 recursive_directory_iterator&
2535 operator=(const recursive_directory_iterator&) = default;
2536
2537 _LIBCPP_INLINE_VISIBILITY
2538 recursive_directory_iterator&
2539 operator=(recursive_directory_iterator&& __o) noexcept {
2540 // non-default implementation provided to support self-move assign.
2541 if (this != &__o) {
2542 __imp_ = _VSTD::move(__o.__imp_);
2543 __rec_ = __o.__rec_;
2544 }
2545 return *this;
2546 }
2547
2548 ~recursive_directory_iterator() = default;
2549
2550 _LIBCPP_INLINE_VISIBILITY
2551 const directory_entry& operator*() const { return __dereference(); }
2552
2553 _LIBCPP_INLINE_VISIBILITY
2554 const directory_entry* operator->() const { return &__dereference(); }
2555
2556 recursive_directory_iterator& operator++() { return __increment(); }
2557
2558 _LIBCPP_INLINE_VISIBILITY
2559 __dir_element_proxy operator++(int) {
2560 __dir_element_proxy __p(**this);
2561 __increment();
2562 return __p;
2563 }
2564
2565 _LIBCPP_INLINE_VISIBILITY
2566 recursive_directory_iterator& increment(error_code& __ec) {
2567 return __increment(&__ec);
2568 }
2569
2570 _LIBCPP_FUNC_VIS directory_options options() const;
2571 _LIBCPP_FUNC_VIS int depth() const;
2572
2573 _LIBCPP_INLINE_VISIBILITY
2574 void pop() { __pop(); }
2575
2576 _LIBCPP_INLINE_VISIBILITY
2577 void pop(error_code& __ec) { __pop(&__ec); }
2578
2579 _LIBCPP_INLINE_VISIBILITY
2580 bool recursion_pending() const { return __rec_; }
2581
2582 _LIBCPP_INLINE_VISIBILITY
2583 void disable_recursion_pending() { __rec_ = false; }
2584
2585private:
2586 _LIBCPP_FUNC_VIS
2587 recursive_directory_iterator(const path& __p, directory_options __opt,
2588 error_code* __ec);
2589
2590 _LIBCPP_FUNC_VIS
2591 const directory_entry& __dereference() const;
2592
2593 _LIBCPP_FUNC_VIS
2594 bool __try_recursion(error_code* __ec);
2595
2596 _LIBCPP_FUNC_VIS
2597 void __advance(error_code* __ec = nullptr);
2598
2599 _LIBCPP_FUNC_VIS
2600 recursive_directory_iterator& __increment(error_code* __ec = nullptr);
2601
2602 _LIBCPP_FUNC_VIS
2603 void __pop(error_code* __ec = nullptr);
2604
2605 inline _LIBCPP_INLINE_VISIBILITY friend bool
2606 operator==(const recursive_directory_iterator&,
2607 const recursive_directory_iterator&) noexcept;
2608
2609 struct _LIBCPP_HIDDEN __shared_imp;
2610 shared_ptr<__shared_imp> __imp_;
2611 bool __rec_;
2612}; // class recursive_directory_iterator
2613
2614inline _LIBCPP_INLINE_VISIBILITY bool
2615operator==(const recursive_directory_iterator& __lhs,
2616 const recursive_directory_iterator& __rhs) noexcept {
2617 return __lhs.__imp_ == __rhs.__imp_;
2618}
2619
2620_LIBCPP_INLINE_VISIBILITY
2621inline bool operator!=(const recursive_directory_iterator& __lhs,
2622 const recursive_directory_iterator& __rhs) noexcept {
2623 return !(__lhs == __rhs);
2624}
2625// enable recursive_directory_iterator range-based for statements
2626inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator
2627begin(recursive_directory_iterator __iter) noexcept {
2628 return __iter;
2629}
2630
2631inline _LIBCPP_INLINE_VISIBILITY recursive_directory_iterator
2632end(const recursive_directory_iterator&) noexcept {
2633 return recursive_directory_iterator();
2634}
2635
2636_LIBCPP_AVAILABILITY_FILESYSTEM_POP
2637
2638_LIBCPP_END_NAMESPACE_FILESYSTEM
2639
2640#endif // !_LIBCPP_CXX03_LANG
2641
2642_LIBCPP_POP_MACROS
2643
2644#endif // _LIBCPP_FILESYSTEM
2645