1 // -*- C++ -*- 2 //===--------------------------- filesystem -------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 #ifndef _LIBCPP_EXPERIMENTAL_FILESYSTEM 11 #define _LIBCPP_EXPERIMENTAL_FILESYSTEM 12 /* 13 filesystem synopsis 14 15 namespace std { namespace experimental { namespace filesystem { inline namespace v1 { 16 17 class path; 18 19 void swap(path& lhs, path& rhs) _NOEXCEPT; 20 size_t hash_value(const path& p) _NOEXCEPT; 21 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 bool operator>=(const path& lhs, const path& rhs) _NOEXCEPT; 28 29 path operator/ (const path& lhs, const path& rhs); 30 31 template <class charT, class traits> 32 basic_ostream<charT, traits>& 33 operator<<(basic_ostream<charT, traits>& os, const path& p); 34 35 template <class charT, class traits> 36 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 copy_options; 71 enum class directory_options; 72 73 typedef chrono::time_point<trivial-clock> file_time_type; 74 75 // operational functions 76 77 path absolute(const path& p, const path& base=current_path()); 78 79 path canonical(const path& p, const path& base = current_path()); 80 path canonical(const path& p, error_code& ec); 81 path canonical(const path& p, const path& base, error_code& ec); 82 83 void copy(const path& from, const path& to); 84 void copy(const path& from, const path& to, error_code& ec) _NOEXCEPT; 85 void copy(const path& from, const path& to, copy_options options); 86 void copy(const path& from, const path& to, copy_options options, 87 error_code& ec) _NOEXCEPT; 88 89 bool copy_file(const path& from, const path& to); 90 bool copy_file(const path& from, const path& to, error_code& ec) _NOEXCEPT; 91 bool copy_file(const path& from, const path& to, copy_options option); 92 bool copy_file(const path& from, const path& to, copy_options option, 93 error_code& ec) _NOEXCEPT; 94 95 void copy_symlink(const path& existing_symlink, const path& new_symlink); 96 void copy_symlink(const path& existing_symlink, const path& new_symlink, 97 error_code& ec) _NOEXCEPT; 98 99 bool create_directories(const path& p); 100 bool create_directories(const path& p, error_code& ec) _NOEXCEPT; 101 102 bool create_directory(const path& p); 103 bool create_directory(const path& p, error_code& ec) _NOEXCEPT; 104 105 bool create_directory(const path& p, const path& attributes); 106 bool create_directory(const path& p, const path& attributes, 107 error_code& ec) _NOEXCEPT; 108 109 void create_directory_symlink(const path& to, const path& new_symlink); 110 void create_directory_symlink(const path& to, const path& new_symlink, 111 error_code& ec) _NOEXCEPT; 112 113 void create_hard_link(const path& to, const path& new_hard_link); 114 void create_hard_link(const path& to, const path& new_hard_link, 115 error_code& ec) _NOEXCEPT; 116 117 void create_symlink(const path& to, const path& new_symlink); 118 void create_symlink(const path& to, const path& new_symlink, 119 error_code& ec) _NOEXCEPT; 120 121 path current_path(); 122 path current_path(error_code& ec); 123 void current_path(const path& p); 124 void current_path(const path& p, error_code& ec) _NOEXCEPT; 125 126 bool exists(file_status s) _NOEXCEPT; 127 bool exists(const path& p); 128 bool exists(const path& p, error_code& ec) _NOEXCEPT; 129 130 bool equivalent(const path& p1, const path& p2); 131 bool equivalent(const path& p1, const path& p2, error_code& ec) _NOEXCEPT; 132 133 uintmax_t file_size(const path& p); 134 uintmax_t file_size(const path& p, error_code& ec) _NOEXCEPT; 135 136 uintmax_t hard_link_count(const path& p); 137 uintmax_t hard_link_count(const path& p, error_code& ec) _NOEXCEPT; 138 139 bool is_block_file(file_status s) _NOEXCEPT; 140 bool is_block_file(const path& p); 141 bool is_block_file(const path& p, error_code& ec) _NOEXCEPT; 142 143 bool is_character_file(file_status s) _NOEXCEPT; 144 bool is_character_file(const path& p); 145 bool is_character_file(const path& p, error_code& ec) _NOEXCEPT; 146 147 bool is_directory(file_status s) _NOEXCEPT; 148 bool is_directory(const path& p); 149 bool is_directory(const path& p, error_code& ec) _NOEXCEPT; 150 151 bool is_empty(const path& p); 152 bool is_empty(const path& p, error_code& ec) _NOEXCEPT; 153 154 bool is_fifo(file_status s) _NOEXCEPT; 155 bool is_fifo(const path& p); 156 bool is_fifo(const path& p, error_code& ec) _NOEXCEPT; 157 158 bool is_other(file_status s) _NOEXCEPT; 159 bool is_other(const path& p); 160 bool is_other(const path& p, error_code& ec) _NOEXCEPT; 161 162 bool is_regular_file(file_status s) _NOEXCEPT; 163 bool is_regular_file(const path& p); 164 bool is_regular_file(const path& p, error_code& ec) _NOEXCEPT; 165 166 bool is_socket(file_status s) _NOEXCEPT; 167 bool is_socket(const path& p); 168 bool is_socket(const path& p, error_code& ec) _NOEXCEPT; 169 170 bool is_symlink(file_status s) _NOEXCEPT; 171 bool is_symlink(const path& p); 172 bool is_symlink(const path& p, error_code& ec) _NOEXCEPT; 173 174 file_time_type last_write_time(const path& p); 175 file_time_type last_write_time(const path& p, error_code& ec) _NOEXCEPT; 176 void last_write_time(const path& p, file_time_type new_time); 177 void last_write_time(const path& p, file_time_type new_time, 178 error_code& ec) _NOEXCEPT; 179 180 void permissions(const path& p, perms prms); 181 void permissions(const path& p, perms prms, error_code& ec) _NOEXCEPT; 182 183 path read_symlink(const path& p); 184 path read_symlink(const path& p, error_code& ec); 185 186 bool remove(const path& p); 187 bool remove(const path& p, error_code& ec) _NOEXCEPT; 188 189 uintmax_t remove_all(const path& p); 190 uintmax_t remove_all(const path& p, error_code& ec) _NOEXCEPT; 191 192 void rename(const path& from, const path& to); 193 void rename(const path& from, const path& to, error_code& ec) _NOEXCEPT; 194 195 void resize_file(const path& p, uintmax_t size); 196 void resize_file(const path& p, uintmax_t size, error_code& ec) _NOEXCEPT; 197 198 space_info space(const path& p); 199 space_info space(const path& p, error_code& ec) _NOEXCEPT; 200 201 file_status status(const path& p); 202 file_status status(const path& p, error_code& ec) _NOEXCEPT; 203 204 bool status_known(file_status s) _NOEXCEPT; 205 206 file_status symlink_status(const path& p); 207 file_status symlink_status(const path& p, error_code& ec) _NOEXCEPT; 208 209 path system_complete(const path& p); 210 path system_complete(const path& p, error_code& ec); 211 212 path temp_directory_path(); 213 path temp_directory_path(error_code& ec); 214 215 } } } } // namespaces std::experimental::filesystem::v1 216 217 */ 218 219 #include <experimental/__config> 220 #include <cstddef> 221 #include <chrono> 222 #include <iterator> 223 #include <iosfwd> 224 #include <locale> 225 #include <memory> 226 #include <stack> 227 #include <string> 228 #include <system_error> 229 #include <utility> 230 #include <iomanip> // for quoted 231 #include <string_view> 232 233 #include <__debug> 234 235 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 236 #pragma GCC system_header 237 #endif 238 239 #define __cpp_lib_experimental_filesystem 201406 240 241 _LIBCPP_BEGIN_NAMESPACE_EXPERIMENTAL_FILESYSTEM 242 243 typedef chrono::time_point<std::chrono::system_clock> file_time_type; 244 245 struct _LIBCPP_TYPE_VIS space_info 246 { 247 uintmax_t capacity; 248 uintmax_t free; 249 uintmax_t available; 250 }; 251 252 enum class _LIBCPP_ENUM_VIS file_type : signed char 253 { 254 none = 0, 255 not_found = -1, 256 regular = 1, 257 directory = 2, 258 symlink = 3, 259 block = 4, 260 character = 5, 261 fifo = 6, 262 socket = 7, 263 unknown = 8 264 }; 265 266 enum class _LIBCPP_ENUM_VIS perms : unsigned 267 { 268 none = 0, 269 270 owner_read = 0400, 271 owner_write = 0200, 272 owner_exec = 0100, 273 owner_all = 0700, 274 275 group_read = 040, 276 group_write = 020, 277 group_exec = 010, 278 group_all = 070, 279 280 others_read = 04, 281 others_write = 02, 282 others_exec = 01, 283 others_all = 07, 284 285 all = 0777, 286 287 set_uid = 04000, 288 set_gid = 02000, 289 sticky_bit = 01000, 290 mask = 07777, 291 unknown = 0xFFFF, 292 293 add_perms = 0x10000, 294 remove_perms = 0x20000, 295 symlink_nofollow = 0x40000 296 }; 297 298 _LIBCPP_INLINE_VISIBILITY 299 inline _LIBCPP_CONSTEXPR perms operator&(perms _LHS, perms _RHS) 300 { return static_cast<perms>(static_cast<unsigned>(_LHS) & static_cast<unsigned>(_RHS)); } 301 302 _LIBCPP_INLINE_VISIBILITY 303 inline _LIBCPP_CONSTEXPR perms operator|(perms _LHS, perms _RHS) 304 { return static_cast<perms>(static_cast<unsigned>(_LHS) | static_cast<unsigned>(_RHS)); } 305 306 _LIBCPP_INLINE_VISIBILITY 307 inline _LIBCPP_CONSTEXPR perms operator^(perms _LHS, perms _RHS) 308 { return static_cast<perms>(static_cast<unsigned>(_LHS) ^ static_cast<unsigned>(_RHS)); } 309 310 _LIBCPP_INLINE_VISIBILITY 311 inline _LIBCPP_CONSTEXPR perms operator~(perms _LHS) 312 { return static_cast<perms>(~static_cast<unsigned>(_LHS)); } 313 314 _LIBCPP_INLINE_VISIBILITY 315 inline perms& operator&=(perms& _LHS, perms _RHS) 316 { return _LHS = _LHS & _RHS; } 317 318 _LIBCPP_INLINE_VISIBILITY 319 inline perms& operator|=(perms& _LHS, perms _RHS) 320 { return _LHS = _LHS | _RHS; } 321 322 _LIBCPP_INLINE_VISIBILITY 323 inline perms& operator^=(perms& _LHS, perms _RHS) 324 { return _LHS = _LHS ^ _RHS; } 325 326 enum class _LIBCPP_ENUM_VIS copy_options : unsigned short 327 { 328 none = 0, 329 skip_existing = 1, 330 overwrite_existing = 2, 331 update_existing = 4, 332 recursive = 8, 333 copy_symlinks = 16, 334 skip_symlinks = 32, 335 directories_only = 64, 336 create_symlinks = 128, 337 create_hard_links = 256, 338 __in_recursive_copy = 512, 339 }; 340 341 _LIBCPP_INLINE_VISIBILITY 342 inline _LIBCPP_CONSTEXPR copy_options operator&(copy_options _LHS, copy_options _RHS) 343 { return static_cast<copy_options>(static_cast<unsigned short>(_LHS) & static_cast<unsigned short>(_RHS)); } 344 345 _LIBCPP_INLINE_VISIBILITY 346 inline _LIBCPP_CONSTEXPR copy_options operator|(copy_options _LHS, copy_options _RHS) 347 { return static_cast<copy_options>(static_cast<unsigned short>(_LHS) | static_cast<unsigned short>(_RHS)); } 348 349 _LIBCPP_INLINE_VISIBILITY 350 inline _LIBCPP_CONSTEXPR copy_options operator^(copy_options _LHS, copy_options _RHS) 351 { return static_cast<copy_options>(static_cast<unsigned short>(_LHS) ^ static_cast<unsigned short>(_RHS)); } 352 353 _LIBCPP_INLINE_VISIBILITY 354 inline _LIBCPP_CONSTEXPR copy_options operator~(copy_options _LHS) 355 { return static_cast<copy_options>(~static_cast<unsigned short>(_LHS)); } 356 357 _LIBCPP_INLINE_VISIBILITY 358 inline copy_options& operator&=(copy_options& _LHS, copy_options _RHS) 359 { return _LHS = _LHS & _RHS; } 360 361 _LIBCPP_INLINE_VISIBILITY 362 inline copy_options& operator|=(copy_options& _LHS, copy_options _RHS) 363 { return _LHS = _LHS | _RHS; } 364 365 _LIBCPP_INLINE_VISIBILITY 366 inline copy_options& operator^=(copy_options& _LHS, copy_options _RHS) 367 { return _LHS = _LHS ^ _RHS; } 368 369 370 enum class _LIBCPP_ENUM_VIS directory_options : unsigned char 371 { 372 none = 0, 373 follow_directory_symlink = 1, 374 skip_permission_denied = 2 375 }; 376 377 _LIBCPP_INLINE_VISIBILITY 378 inline _LIBCPP_CONSTEXPR directory_options operator&(directory_options _LHS, directory_options _RHS) 379 { return static_cast<directory_options>(static_cast<unsigned char>(_LHS) & static_cast<unsigned char>(_RHS)); } 380 381 _LIBCPP_INLINE_VISIBILITY 382 inline _LIBCPP_CONSTEXPR directory_options operator|(directory_options _LHS, directory_options _RHS) 383 { return static_cast<directory_options>(static_cast<unsigned char>(_LHS) | static_cast<unsigned char>(_RHS)); } 384 385 _LIBCPP_INLINE_VISIBILITY 386 inline _LIBCPP_CONSTEXPR directory_options operator^(directory_options _LHS, directory_options _RHS) 387 { return static_cast<directory_options>(static_cast<unsigned char>(_LHS) ^ static_cast<unsigned char>(_RHS)); } 388 389 _LIBCPP_INLINE_VISIBILITY 390 inline _LIBCPP_CONSTEXPR directory_options operator~(directory_options _LHS) 391 { return static_cast<directory_options>(~static_cast<unsigned char>(_LHS)); } 392 393 _LIBCPP_INLINE_VISIBILITY 394 inline directory_options& operator&=(directory_options& _LHS, directory_options _RHS) 395 { return _LHS = _LHS & _RHS; } 396 397 _LIBCPP_INLINE_VISIBILITY 398 inline directory_options& operator|=(directory_options& _LHS, directory_options _RHS) 399 { return _LHS = _LHS | _RHS; } 400 401 _LIBCPP_INLINE_VISIBILITY 402 inline directory_options& operator^=(directory_options& _LHS, directory_options _RHS) 403 { return _LHS = _LHS ^ _RHS; } 404 405 406 class _LIBCPP_TYPE_VIS file_status 407 { 408 public: 409 // constructors 410 _LIBCPP_INLINE_VISIBILITY 411 file_status() _NOEXCEPT : file_status(file_type::none) {} 412 _LIBCPP_INLINE_VISIBILITY 413 explicit file_status(file_type __ft, 414 perms __prms = perms::unknown) _NOEXCEPT 415 : __ft_(__ft), __prms_(__prms) 416 {} 417 418 file_status(const file_status&) _NOEXCEPT = default; 419 file_status(file_status&&) _NOEXCEPT = default; 420 421 _LIBCPP_INLINE_VISIBILITY 422 ~file_status() {} 423 424 file_status& operator=(const file_status&) _NOEXCEPT = default; 425 file_status& operator=(file_status&&) _NOEXCEPT = default; 426 427 // observers 428 _LIBCPP_ALWAYS_INLINE 429 file_type type() const _NOEXCEPT { 430 return __ft_; 431 } 432 433 _LIBCPP_ALWAYS_INLINE 434 perms permissions() const _NOEXCEPT { 435 return __prms_; 436 } 437 438 // modifiers 439 _LIBCPP_ALWAYS_INLINE 440 void type(file_type __ft) _NOEXCEPT { 441 __ft_ = __ft; 442 } 443 444 _LIBCPP_ALWAYS_INLINE 445 void permissions(perms __p) _NOEXCEPT { 446 __prms_ = __p; 447 } 448 private: 449 file_type __ft_; 450 perms __prms_; 451 }; 452 453 class _LIBCPP_TYPE_VIS directory_entry; 454 455 template <class _Tp> struct __can_convert_char { 456 static const bool value = false; 457 }; 458 template <class _Tp> struct __can_convert_char<const _Tp> 459 : public __can_convert_char<_Tp> { 460 }; 461 template <> struct __can_convert_char<char> { 462 static const bool value = true; 463 using __char_type = char; 464 }; 465 template <> struct __can_convert_char<wchar_t> { 466 static const bool value = true; 467 using __char_type = wchar_t; 468 }; 469 template <> struct __can_convert_char<char16_t> { 470 static const bool value = true; 471 using __char_type = char16_t; 472 }; 473 template <> struct __can_convert_char<char32_t> { 474 static const bool value = true; 475 using __char_type = char32_t; 476 }; 477 478 template <class _ECharT> 479 typename enable_if<__can_convert_char<_ECharT>::value, bool>::type 480 __is_separator(_ECharT __e) { 481 return __e == _ECharT('/'); 482 }; 483 484 struct _NullSentinal {}; 485 486 template <class _Tp> 487 using _Void = void; 488 489 template <class _Tp, class = void> 490 struct __is_pathable_string : public false_type {}; 491 492 template <class _ECharT, class _Traits, class _Alloc> 493 struct __is_pathable_string<basic_string<_ECharT, _Traits, _Alloc>, 494 _Void<typename __can_convert_char<_ECharT>::__char_type>> 495 : public __can_convert_char<_ECharT> 496 { 497 using _Str = basic_string<_ECharT, _Traits, _Alloc>; 498 using _Base = __can_convert_char<_ECharT>; 499 static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); } 500 static _ECharT const* __range_end(_Str const& __s) { return __s.data() + __s.length(); } 501 static _ECharT __first_or_null(_Str const& __s) { 502 return __s.empty() ? _ECharT{} : __s[0]; 503 } 504 }; 505 506 507 template <class _ECharT, class _Traits> 508 struct __is_pathable_string<basic_string_view<_ECharT, _Traits>, 509 _Void<typename __can_convert_char<_ECharT>::__char_type>> 510 : public __can_convert_char<_ECharT> 511 { 512 using _Str = basic_string_view<_ECharT, _Traits>; 513 using _Base = __can_convert_char<_ECharT>; 514 static _ECharT const* __range_begin(_Str const& __s) { return __s.data(); } 515 static _ECharT const* __range_end(_Str const& __s) { return __s.data() + __s.length(); } 516 static _ECharT __first_or_null(_Str const& __s) { 517 return __s.empty() ? _ECharT{} : __s[0]; 518 } 519 }; 520 521 template <class _Source, 522 class _DS = typename decay<_Source>::type, 523 class _UnqualPtrType = typename remove_const< 524 typename remove_pointer<_DS>::type>::type, 525 bool _IsCharPtr = is_pointer<_DS>::value && 526 __can_convert_char<_UnqualPtrType>::value 527 > 528 struct __is_pathable_char_array : false_type {}; 529 530 template <class _Source, class _ECharT, class _UPtr> 531 struct __is_pathable_char_array<_Source, _ECharT*, _UPtr, true> 532 : __can_convert_char<typename remove_const<_ECharT>::type> 533 { 534 using _Base = __can_convert_char<typename remove_const<_ECharT>::type>; 535 536 static _ECharT const* __range_begin(const _ECharT* __b) { return __b; } 537 static _ECharT const* __range_end(const _ECharT* __b) 538 { 539 using _Iter = const _ECharT*; 540 const _ECharT __sentinal = _ECharT{}; 541 _Iter __e = __b; 542 for (; *__e != __sentinal; ++__e) 543 ; 544 return __e; 545 } 546 547 static _ECharT __first_or_null(const _ECharT* __b) { return *__b; } 548 }; 549 550 template <class _Iter, bool _IsIt = __is_input_iterator<_Iter>::value, class = void> 551 struct __is_pathable_iter : false_type {}; 552 553 template <class _Iter> 554 struct __is_pathable_iter<_Iter, true, 555 _Void<typename __can_convert_char<typename iterator_traits<_Iter>::value_type>::__char_type>> 556 : __can_convert_char<typename iterator_traits<_Iter>::value_type> 557 { 558 using _ECharT = typename iterator_traits<_Iter>::value_type; 559 using _Base = __can_convert_char<_ECharT>; 560 561 static _Iter __range_begin(_Iter __b) { return __b; } 562 static _NullSentinal __range_end(_Iter) { return _NullSentinal{}; } 563 564 static _ECharT __first_or_null(_Iter __b) { return *__b; } 565 }; 566 567 template <class _Tp, bool _IsStringT = __is_pathable_string<_Tp>::value, 568 bool _IsCharIterT = __is_pathable_char_array<_Tp>::value, 569 bool _IsIterT = !_IsCharIterT && __is_pathable_iter<_Tp>::value 570 > 571 struct __is_pathable : false_type { 572 static_assert(!_IsStringT && !_IsCharIterT && !_IsIterT, "Must all be false"); 573 }; 574 575 template <class _Tp> 576 struct __is_pathable<_Tp, true, false, false> : __is_pathable_string<_Tp> {}; 577 578 579 template <class _Tp> 580 struct __is_pathable<_Tp, false, true, false> : __is_pathable_char_array<_Tp> {}; 581 582 583 template <class _Tp> 584 struct __is_pathable<_Tp, false, false, true> : __is_pathable_iter<_Tp> {}; 585 586 587 template <class _ECharT> 588 struct _PathCVT { 589 static_assert(__can_convert_char<_ECharT>::value, "Char type not convertible"); 590 591 typedef __narrow_to_utf8<sizeof(_ECharT)*__CHAR_BIT__> _Narrower; 592 593 static void __append_range(string& __dest, _ECharT const* __b, _ECharT const* __e) { 594 _Narrower()(back_inserter(__dest), __b, __e); 595 } 596 597 template <class _Iter> 598 static void __append_range(string& __dest, _Iter __b, _Iter __e) { 599 static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload"); 600 if (__b == __e) return; 601 basic_string<_ECharT> __tmp(__b, __e); 602 _Narrower()(back_inserter(__dest), __tmp.data(), 603 __tmp.data() + __tmp.length()); 604 } 605 606 template <class _Iter> 607 static void __append_range(string& __dest, _Iter __b, _NullSentinal) { 608 static_assert(!is_same<_Iter, _ECharT*>::value, "Call const overload"); 609 const _ECharT __sentinal = _ECharT{}; 610 if (*__b == __sentinal) return; 611 basic_string<_ECharT> __tmp; 612 for (; *__b != __sentinal; ++__b) 613 __tmp.push_back(*__b); 614 _Narrower()(back_inserter(__dest), __tmp.data(), 615 __tmp.data() + __tmp.length()); 616 } 617 618 template <class _Source> 619 static void __append_source(string& __dest, _Source const& __s) 620 { 621 using _Traits = __is_pathable<_Source>; 622 __append_range(__dest, _Traits::__range_begin(__s), _Traits::__range_end(__s)); 623 } 624 }; 625 626 template <> 627 struct _PathCVT<char> { 628 629 template <class _Iter> 630 static typename enable_if< 631 __is_exactly_input_iterator<_Iter>::value 632 >::type __append_range(string& __dest, _Iter __b, _Iter __e) { 633 for (; __b != __e; ++__b) 634 __dest.push_back(*__b); 635 } 636 637 template <class _Iter> 638 static typename enable_if< 639 __is_forward_iterator<_Iter>::value 640 >::type __append_range(string& __dest, _Iter __b, _Iter __e) { 641 __dest.__append_forward_unsafe(__b, __e); 642 } 643 644 template <class _Iter> 645 static void __append_range(string& __dest, _Iter __b, _NullSentinal) { 646 const char __sentinal = char{}; 647 for (; *__b != __sentinal; ++__b) 648 __dest.push_back(*__b); 649 } 650 651 template <class _Source> 652 static void __append_source(string& __dest, _Source const& __s) 653 { 654 using _Traits = __is_pathable<_Source>; 655 __append_range(__dest, _Traits::__range_begin(__s), 656 _Traits::__range_end(__s)); 657 } 658 }; 659 660 661 class _LIBCPP_TYPE_VIS path 662 { 663 template <class _SourceOrIter, class _Tp = path&> 664 using _EnableIfPathable = typename 665 enable_if<__is_pathable<_SourceOrIter>::value, _Tp>::type; 666 667 template <class _Tp> 668 using _SourceChar = typename __is_pathable<_Tp>::__char_type; 669 670 template <class _Tp> 671 using _SourceCVT = _PathCVT<_SourceChar<_Tp>>; 672 673 public: 674 typedef char value_type; 675 typedef basic_string<value_type> string_type; 676 typedef _VSTD::string_view __string_view; 677 static _LIBCPP_CONSTEXPR value_type preferred_separator = '/'; 678 679 // constructors and destructor 680 _LIBCPP_INLINE_VISIBILITY path() _NOEXCEPT {} 681 _LIBCPP_INLINE_VISIBILITY path(const path& __p) : __pn_(__p.__pn_) {} 682 _LIBCPP_INLINE_VISIBILITY path(path&& __p) _NOEXCEPT : __pn_(_VSTD::move(__p.__pn_)) {} 683 684 _LIBCPP_INLINE_VISIBILITY 685 path(string_type&& __s) _NOEXCEPT : __pn_(_VSTD::move(__s)) {} 686 687 template < 688 class _Source, 689 class = _EnableIfPathable<_Source, void> 690 > 691 path(const _Source& __src) { 692 _SourceCVT<_Source>::__append_source(__pn_, __src); 693 } 694 695 template <class _InputIt> 696 path(_InputIt __first, _InputIt __last) { 697 typedef typename iterator_traits<_InputIt>::value_type _ItVal; 698 _PathCVT<_ItVal>::__append_range(__pn_, __first, __last); 699 } 700 701 // TODO Implement locale conversions. 702 template <class _Source, 703 class = _EnableIfPathable<_Source, void> 704 > 705 path(const _Source& __src, const locale& __loc); 706 template <class _InputIt> 707 path(_InputIt __first, _InputIt _last, const locale& __loc); 708 709 _LIBCPP_INLINE_VISIBILITY 710 ~path() = default; 711 712 // assignments 713 _LIBCPP_INLINE_VISIBILITY 714 path& operator=(const path& __p) { 715 __pn_ = __p.__pn_; 716 return *this; 717 } 718 719 _LIBCPP_INLINE_VISIBILITY 720 path& operator=(path&& __p) _NOEXCEPT { 721 __pn_ = _VSTD::move(__p.__pn_); 722 return *this; 723 } 724 725 template <class = void> 726 _LIBCPP_INLINE_VISIBILITY 727 path& operator=(string_type&& __s) _NOEXCEPT { 728 __pn_ = _VSTD::move(__s); 729 return *this; 730 } 731 732 _LIBCPP_INLINE_VISIBILITY 733 path& assign(string_type&& __s) _NOEXCEPT { 734 __pn_ = _VSTD::move(__s); 735 return *this; 736 } 737 738 template <class _Source> 739 _LIBCPP_INLINE_VISIBILITY 740 _EnableIfPathable<_Source> 741 operator=(const _Source& __src) 742 { return this->assign(__src); } 743 744 745 template <class _Source> 746 _EnableIfPathable<_Source> 747 assign(const _Source& __src) { 748 __pn_.clear(); 749 _SourceCVT<_Source>::__append_source(__pn_, __src); 750 return *this; 751 } 752 753 template <class _InputIt> 754 path& assign(_InputIt __first, _InputIt __last) { 755 typedef typename iterator_traits<_InputIt>::value_type _ItVal; 756 __pn_.clear(); 757 _PathCVT<_ItVal>::__append_range(__pn_, __first, __last); 758 return *this; 759 } 760 761 private: 762 template <class _ECharT> 763 void __append_sep_if_needed(_ECharT __first_or_null) { 764 const _ECharT __null_val = {}; 765 bool __append_sep = !empty() && 766 !__is_separator(__pn_.back()) && 767 __first_or_null != __null_val && // non-empty 768 !__is_separator(__first_or_null); 769 if (__append_sep) 770 __pn_ += preferred_separator; 771 } 772 773 public: 774 // appends 775 path& operator/=(const path& __p) { 776 _LIBCPP_ASSERT(!__p.has_root_name(), 777 "cannot append to a path with a root name"); 778 __append_sep_if_needed(__p.empty() ? char{} : __p.__pn_[0]); 779 __pn_ += __p.native(); 780 return *this; 781 } 782 783 template <class _Source> 784 _LIBCPP_INLINE_VISIBILITY 785 _EnableIfPathable<_Source> 786 operator/=(const _Source& __src) { 787 return this->append(__src); 788 } 789 790 template <class _Source> 791 _EnableIfPathable<_Source> 792 append(const _Source& __src) { 793 using _Traits = __is_pathable<_Source>; 794 using _CVT = _PathCVT<_SourceChar<_Source>>; 795 __append_sep_if_needed(_Traits::__first_or_null(__src)); 796 _CVT::__append_source(__pn_, __src); 797 return *this; 798 } 799 800 template <class _InputIt> 801 path& append(_InputIt __first, _InputIt __last) { 802 typedef typename iterator_traits<_InputIt>::value_type _ItVal; 803 static_assert(__can_convert_char<_ItVal>::value, "Must convertible"); 804 using _CVT = _PathCVT<_ItVal>; 805 if (__first != __last) { 806 __append_sep_if_needed(*__first); 807 _CVT::__append_range(__pn_, __first, __last); 808 } 809 return *this; 810 } 811 812 // concatenation 813 _LIBCPP_INLINE_VISIBILITY 814 path& operator+=(const path& __x) { 815 __pn_ += __x.__pn_; 816 return *this; 817 } 818 819 _LIBCPP_INLINE_VISIBILITY 820 path& operator+=(const string_type& __x) { 821 __pn_ += __x; 822 return *this; 823 } 824 825 _LIBCPP_INLINE_VISIBILITY 826 path& operator+=(__string_view __x) { 827 __pn_ += __x; 828 return *this; 829 } 830 831 _LIBCPP_INLINE_VISIBILITY 832 path& operator+=(const value_type* __x) { 833 __pn_ += __x; 834 return *this; 835 } 836 837 _LIBCPP_INLINE_VISIBILITY 838 path& operator+=(value_type __x) { 839 __pn_ += __x; 840 return *this; 841 } 842 843 template <class _ECharT> 844 typename enable_if<__can_convert_char<_ECharT>::value, path&>::type 845 operator+=(_ECharT __x) 846 { 847 basic_string<_ECharT> __tmp; 848 __tmp += __x; 849 _PathCVT<_ECharT>::__append_source(__pn_, __tmp); 850 return *this; 851 } 852 853 template <class _Source> 854 _EnableIfPathable<_Source> 855 operator+=(const _Source& __x) { 856 return this->concat(__x); 857 } 858 859 template <class _Source> 860 _EnableIfPathable<_Source> 861 concat(const _Source& __x) { 862 _SourceCVT<_Source>::__append_source(__pn_, __x); 863 return *this; 864 } 865 866 template <class _InputIt> 867 path& concat(_InputIt __first, _InputIt __last) { 868 typedef typename iterator_traits<_InputIt>::value_type _ItVal; 869 _PathCVT<_ItVal>::__append_range(__pn_, __first, __last); 870 return *this; 871 } 872 873 // modifiers 874 _LIBCPP_INLINE_VISIBILITY 875 void clear() _NOEXCEPT { 876 __pn_.clear(); 877 } 878 879 path& make_preferred() { return *this; } 880 881 _LIBCPP_INLINE_VISIBILITY 882 path& remove_filename() { 883 if (__pn_.size() == __root_path_raw().size()) 884 clear(); 885 else 886 __pn_ = __parent_path(); 887 return *this; 888 } 889 890 path& replace_filename(const path& __replacement) { 891 remove_filename(); 892 return (*this /= __replacement); 893 } 894 895 path& replace_extension(const path& __replacement = path()); 896 897 _LIBCPP_INLINE_VISIBILITY 898 void swap(path& __rhs) _NOEXCEPT { 899 __pn_.swap(__rhs.__pn_); 900 } 901 902 // native format observers 903 _LIBCPP_INLINE_VISIBILITY 904 const string_type& native() const _NOEXCEPT { 905 return __pn_; 906 } 907 908 _LIBCPP_INLINE_VISIBILITY 909 const value_type* c_str() const _NOEXCEPT { return __pn_.c_str(); } 910 911 _LIBCPP_INLINE_VISIBILITY operator string_type() const { return __pn_; } 912 913 template <class _ECharT, class _Traits = char_traits<_ECharT>, 914 class _Allocator = allocator<_ECharT> > 915 basic_string<_ECharT, _Traits, _Allocator> 916 string(const _Allocator& __a = _Allocator()) const { 917 using _CVT = __widen_from_utf8<sizeof(_ECharT)*__CHAR_BIT__>; 918 using _Str = basic_string<_ECharT, _Traits, _Allocator>; 919 _Str __s(__a); 920 __s.reserve(__pn_.size()); 921 _CVT()(back_inserter(__s), __pn_.data(), __pn_.data() + __pn_.size()); 922 return __s; 923 } 924 925 _LIBCPP_INLINE_VISIBILITY std::string string() const { return __pn_; } 926 _LIBCPP_INLINE_VISIBILITY std::wstring wstring() const { return string<wchar_t>(); } 927 _LIBCPP_INLINE_VISIBILITY std::string u8string() const { return __pn_; } 928 _LIBCPP_INLINE_VISIBILITY std::u16string u16string() const { return string<char16_t>(); } 929 _LIBCPP_INLINE_VISIBILITY std::u32string u32string() const { return string<char32_t>(); } 930 931 // generic format observers 932 template <class _ECharT, class _Traits = char_traits<_ECharT>, 933 class _Allocator = allocator<_ECharT> 934 > 935 basic_string<_ECharT, _Traits, _Allocator> 936 generic_string(const _Allocator& __a = _Allocator()) const { 937 return string<_ECharT, _Traits, _Allocator>(__a); 938 } 939 940 std::string generic_string() const { return __pn_; } 941 std::wstring generic_wstring() const { return string<wchar_t>(); } 942 std::string generic_u8string() const { return __pn_; } 943 std::u16string generic_u16string() const { return string<char16_t>(); } 944 std::u32string generic_u32string() const { return string<char32_t>(); } 945 946 private: 947 int __compare(__string_view) const; 948 __string_view __root_name() const; 949 __string_view __root_directory() const; 950 __string_view __root_path_raw() const; 951 __string_view __relative_path() const; 952 __string_view __parent_path() const; 953 __string_view __filename() const; 954 __string_view __stem() const; 955 __string_view __extension() const; 956 957 public: 958 // compare 959 _LIBCPP_INLINE_VISIBILITY int compare(const path& __p) const _NOEXCEPT { return __compare(__p.__pn_);} 960 _LIBCPP_INLINE_VISIBILITY int compare(const string_type& __s) const { return __compare(__s); } 961 _LIBCPP_INLINE_VISIBILITY int compare(__string_view __s) const { return __compare(__s); } 962 _LIBCPP_INLINE_VISIBILITY int compare(const value_type* __s) const { return __compare(__s); } 963 964 // decomposition 965 _LIBCPP_INLINE_VISIBILITY path root_name() const { return string_type(__root_name()); } 966 _LIBCPP_INLINE_VISIBILITY path root_directory() const { return string_type(__root_directory()); } 967 _LIBCPP_INLINE_VISIBILITY path root_path() const { return root_name().append(string_type(__root_directory())); } 968 _LIBCPP_INLINE_VISIBILITY path relative_path() const { return string_type(__relative_path()); } 969 _LIBCPP_INLINE_VISIBILITY path parent_path() const { return string_type(__parent_path()); } 970 _LIBCPP_INLINE_VISIBILITY path filename() const { return string_type(__filename()); } 971 _LIBCPP_INLINE_VISIBILITY path stem() const { return string_type(__stem());} 972 _LIBCPP_INLINE_VISIBILITY path extension() const { return string_type(__extension()); } 973 974 // query 975 _LIBCPP_INLINE_VISIBILITY bool empty() const _NOEXCEPT { return __pn_.empty(); } 976 977 _LIBCPP_INLINE_VISIBILITY bool has_root_name() const { return !__root_name().empty(); } 978 _LIBCPP_INLINE_VISIBILITY bool has_root_directory() const { return !__root_directory().empty(); } 979 _LIBCPP_INLINE_VISIBILITY bool has_root_path() const { return !__root_path_raw().empty(); } 980 _LIBCPP_INLINE_VISIBILITY bool has_relative_path() const { return !__relative_path().empty(); } 981 _LIBCPP_INLINE_VISIBILITY bool has_parent_path() const { return !__parent_path().empty(); } 982 _LIBCPP_INLINE_VISIBILITY bool has_filename() const { return !__filename().empty(); } 983 _LIBCPP_INLINE_VISIBILITY bool has_stem() const { return !__stem().empty(); } 984 _LIBCPP_INLINE_VISIBILITY bool has_extension() const { return !__extension().empty(); } 985 986 _LIBCPP_INLINE_VISIBILITY bool is_absolute() const { return has_root_directory(); } 987 _LIBCPP_INLINE_VISIBILITY bool is_relative() const { return !is_absolute(); } 988 989 // iterators 990 class _LIBCPP_TYPE_VIS iterator; 991 typedef iterator const_iterator; 992 993 iterator begin() const; 994 iterator end() const; 995 996 private: 997 inline _LIBCPP_INLINE_VISIBILITY 998 path& __assign_view(__string_view const& __s) noexcept { __pn_ = string_type(__s); return *this; } 999 string_type __pn_; 1000 }; 1001 1002 inline _LIBCPP_ALWAYS_INLINE 1003 void swap(path& __lhs, path& __rhs) _NOEXCEPT { 1004 __lhs.swap(__rhs); 1005 } 1006 1007 _LIBCPP_FUNC_VIS 1008 size_t hash_value(const path& __p) _NOEXCEPT; 1009 1010 inline _LIBCPP_INLINE_VISIBILITY 1011 bool operator==(const path& __lhs, const path& __rhs) _NOEXCEPT 1012 { return __lhs.compare(__rhs) == 0; } 1013 1014 inline _LIBCPP_INLINE_VISIBILITY 1015 bool operator!=(const path& __lhs, const path& __rhs) _NOEXCEPT 1016 { return __lhs.compare(__rhs) != 0; } 1017 1018 inline _LIBCPP_INLINE_VISIBILITY 1019 bool operator<(const path& __lhs, const path& __rhs) _NOEXCEPT 1020 { return __lhs.compare(__rhs) < 0; } 1021 1022 inline _LIBCPP_INLINE_VISIBILITY 1023 bool operator<=(const path& __lhs, const path& __rhs) _NOEXCEPT 1024 { return __lhs.compare(__rhs) <= 0; } 1025 1026 inline _LIBCPP_INLINE_VISIBILITY 1027 bool operator>(const path& __lhs, const path& __rhs) _NOEXCEPT 1028 { return __lhs.compare(__rhs) > 0; } 1029 1030 inline _LIBCPP_INLINE_VISIBILITY 1031 bool operator>=(const path& __lhs, const path& __rhs) _NOEXCEPT 1032 { return __lhs.compare(__rhs) >= 0; } 1033 1034 inline _LIBCPP_INLINE_VISIBILITY 1035 path operator/(const path& __lhs, const path& __rhs) { 1036 return path(__lhs) /= __rhs; 1037 } 1038 1039 template <class _CharT, class _Traits> 1040 _LIBCPP_INLINE_VISIBILITY 1041 typename enable_if<is_same<_CharT, char>::value && 1042 is_same<_Traits, char_traits<char>>::value, 1043 basic_ostream<_CharT, _Traits>& 1044 >::type 1045 operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) { 1046 __os << std::__quoted(__p.native()); 1047 return __os; 1048 } 1049 1050 template <class _CharT, class _Traits> 1051 _LIBCPP_INLINE_VISIBILITY 1052 typename enable_if<!is_same<_CharT, char>::value || 1053 !is_same<_Traits, char_traits<char>>::value, 1054 basic_ostream<_CharT, _Traits>& 1055 >::type 1056 operator<<(basic_ostream<_CharT, _Traits>& __os, const path& __p) { 1057 __os << std::__quoted(__p.string<_CharT, _Traits>()); 1058 return __os; 1059 } 1060 1061 template <class _CharT, class _Traits> 1062 _LIBCPP_INLINE_VISIBILITY 1063 basic_istream<_CharT, _Traits>& 1064 operator>>(basic_istream<_CharT, _Traits>& __is, path& __p) 1065 { 1066 basic_string<_CharT, _Traits> __tmp; 1067 __is >> __quoted(__tmp); 1068 __p = __tmp; 1069 return __is; 1070 } 1071 1072 template <class _Source> 1073 _LIBCPP_INLINE_VISIBILITY 1074 typename enable_if<__is_pathable<_Source>::value, path>::type 1075 u8path(const _Source& __s){ 1076 static_assert(is_same<typename __is_pathable<_Source>::__char_type, char>::value, 1077 "u8path(Source const&) requires Source have a character type of type 'char'"); 1078 return path(__s); 1079 } 1080 1081 template <class _InputIt> 1082 _LIBCPP_INLINE_VISIBILITY 1083 typename enable_if<__is_pathable<_InputIt>::value, path>::type 1084 u8path(_InputIt __f, _InputIt __l) { 1085 static_assert(is_same<typename __is_pathable<_InputIt>::__char_type, char>::value, 1086 "u8path(Iter, Iter) requires Iter have a value_type of type 'char'"); 1087 return path(__f, __l); 1088 } 1089 1090 class _LIBCPP_TYPE_VIS path::iterator 1091 { 1092 public: 1093 typedef bidirectional_iterator_tag iterator_category; 1094 typedef path value_type; 1095 typedef std::ptrdiff_t difference_type; 1096 typedef const path* pointer; 1097 typedef const path& reference; 1098 public: 1099 _LIBCPP_INLINE_VISIBILITY 1100 iterator() : __stashed_elem_(), __path_ptr_(nullptr), 1101 __entry_(), __state_(__singular) {} 1102 1103 iterator(const iterator&) = default; 1104 ~iterator() = default; 1105 1106 iterator& operator=(const iterator&) = default; 1107 1108 _LIBCPP_INLINE_VISIBILITY 1109 reference operator*() const { 1110 return __stashed_elem_; 1111 } 1112 1113 _LIBCPP_INLINE_VISIBILITY 1114 pointer operator->() const { 1115 return &__stashed_elem_; 1116 } 1117 1118 _LIBCPP_INLINE_VISIBILITY 1119 iterator& operator++() { 1120 _LIBCPP_ASSERT(__state_ != __singular, 1121 "attempting to increment a singular iterator"); 1122 _LIBCPP_ASSERT(__state_ != __at_end, 1123 "attempting to increment the end iterator"); 1124 return __increment(); 1125 } 1126 1127 _LIBCPP_INLINE_VISIBILITY 1128 iterator operator++(int) { 1129 iterator __it(*this); 1130 this->operator++(); 1131 return __it; 1132 } 1133 1134 _LIBCPP_INLINE_VISIBILITY 1135 iterator& operator--() { 1136 _LIBCPP_ASSERT(__state_ != __singular, 1137 "attempting to decrement a singular iterator"); 1138 _LIBCPP_ASSERT(__entry_.data() != __path_ptr_->native().data(), 1139 "attempting to decrement the begin iterator"); 1140 return __decrement(); 1141 } 1142 1143 _LIBCPP_INLINE_VISIBILITY 1144 iterator operator--(int) { 1145 iterator __it(*this); 1146 this->operator--(); 1147 return __it; 1148 } 1149 1150 private: 1151 friend class path; 1152 1153 static constexpr unsigned char __singular = 0; 1154 static constexpr unsigned char __at_end = 6; 1155 1156 inline _LIBCPP_INLINE_VISIBILITY 1157 friend bool operator==(const iterator&, const iterator&); 1158 1159 iterator& __increment(); 1160 iterator& __decrement(); 1161 1162 path __stashed_elem_; 1163 const path* __path_ptr_; 1164 path::__string_view __entry_; 1165 unsigned char __state_; 1166 }; 1167 1168 inline _LIBCPP_INLINE_VISIBILITY 1169 bool operator==(const path::iterator& __lhs, const path::iterator& __rhs) { 1170 return __lhs.__path_ptr_ == __rhs.__path_ptr_ && 1171 __lhs.__entry_.data() == __rhs.__entry_.data(); 1172 } 1173 1174 inline _LIBCPP_INLINE_VISIBILITY 1175 bool operator!=(const path::iterator& __lhs, const path::iterator& __rhs) { 1176 return !(__lhs == __rhs); 1177 } 1178 1179 class _LIBCPP_EXCEPTION_ABI filesystem_error : public system_error 1180 { 1181 public: 1182 _LIBCPP_INLINE_VISIBILITY 1183 filesystem_error(const string& __what, error_code __ec) 1184 : system_error(__ec, __what), 1185 __paths_(make_shared<_Storage>(path(), path())) 1186 {} 1187 1188 _LIBCPP_INLINE_VISIBILITY 1189 filesystem_error(const string& __what, const path& __p1, error_code __ec) 1190 : system_error(__ec, __what), 1191 __paths_(make_shared<_Storage>(__p1, path())) 1192 {} 1193 1194 _LIBCPP_INLINE_VISIBILITY 1195 filesystem_error(const string& __what, const path& __p1, const path& __p2, 1196 error_code __ec) 1197 : system_error(__ec, __what), 1198 __paths_(make_shared<_Storage>(__p1, __p2)) 1199 {} 1200 1201 _LIBCPP_INLINE_VISIBILITY 1202 const path& path1() const _NOEXCEPT { 1203 return __paths_->first; 1204 } 1205 1206 _LIBCPP_INLINE_VISIBILITY 1207 const path& path2() const _NOEXCEPT { 1208 return __paths_->second; 1209 } 1210 1211 ~filesystem_error() override; // key function 1212 1213 // TODO(ericwf): Create a custom error message. 1214 //const char* what() const _NOEXCEPT; 1215 1216 private: 1217 typedef pair<path, path> _Storage; 1218 shared_ptr<_Storage> __paths_; 1219 }; 1220 1221 template <class... _Args> 1222 _LIBCPP_NORETURN inline _LIBCPP_ALWAYS_INLINE 1223 #ifndef _LIBCPP_NO_EXCEPTIONS 1224 void __throw_filesystem_error(_Args && ...__args) 1225 { 1226 throw filesystem_error(std::forward<_Args>(__args)...); 1227 } 1228 #else 1229 void __throw_filesystem_error(_Args&&...) 1230 { 1231 _VSTD::abort(); 1232 } 1233 #endif 1234 1235 1236 // operational functions 1237 1238 _LIBCPP_FUNC_VIS 1239 path __canonical(const path&, const path&, error_code *__ec=nullptr); 1240 _LIBCPP_FUNC_VIS 1241 void __copy(const path& __from, const path& __to, copy_options __opt, 1242 error_code *__ec=nullptr); 1243 _LIBCPP_FUNC_VIS 1244 bool __copy_file(const path& __from, const path& __to, copy_options __opt, 1245 error_code *__ec=nullptr); 1246 _LIBCPP_FUNC_VIS 1247 void __copy_symlink(const path& __existing_symlink, const path& __new_symlink, 1248 error_code *__ec=nullptr); 1249 _LIBCPP_FUNC_VIS 1250 bool __create_directories(const path& p, error_code *ec=nullptr); 1251 _LIBCPP_FUNC_VIS 1252 bool __create_directory(const path& p, error_code *ec=nullptr); 1253 _LIBCPP_FUNC_VIS 1254 bool __create_directory(const path& p, const path & attributes, 1255 error_code *ec=nullptr); 1256 _LIBCPP_FUNC_VIS 1257 void __create_directory_symlink(const path& __to, const path& __new_symlink, 1258 error_code *__ec=nullptr); 1259 _LIBCPP_FUNC_VIS 1260 void __create_hard_link(const path& __to, const path& __new_hard_link, 1261 error_code *__ec=nullptr); 1262 _LIBCPP_FUNC_VIS 1263 void __create_symlink(const path& __to, const path& __new_symlink, 1264 error_code *__ec=nullptr); 1265 _LIBCPP_FUNC_VIS 1266 path __current_path(error_code *__ec=nullptr); 1267 _LIBCPP_FUNC_VIS 1268 void __current_path(const path&, error_code *__ec=nullptr); 1269 _LIBCPP_FUNC_VIS 1270 bool __equivalent(const path&, const path&, error_code *__ec=nullptr); 1271 _LIBCPP_FUNC_VIS 1272 uintmax_t __file_size(const path&, error_code *__ec=nullptr); 1273 _LIBCPP_FUNC_VIS 1274 uintmax_t __hard_link_count(const path&, error_code *__ec=nullptr); 1275 _LIBCPP_FUNC_VIS 1276 bool __fs_is_empty(const path& p, error_code *ec=nullptr); 1277 _LIBCPP_FUNC_VIS 1278 file_time_type __last_write_time(const path& p, error_code *ec=nullptr); 1279 _LIBCPP_FUNC_VIS 1280 void __last_write_time(const path& p, file_time_type new_time, 1281 error_code *ec=nullptr); 1282 _LIBCPP_FUNC_VIS 1283 void __permissions(const path& p, perms prms, error_code *ec=nullptr); 1284 _LIBCPP_FUNC_VIS 1285 path __read_symlink(const path& p, error_code *ec=nullptr); 1286 _LIBCPP_FUNC_VIS 1287 bool __remove(const path& p, error_code *ec=nullptr); 1288 _LIBCPP_FUNC_VIS 1289 uintmax_t __remove_all(const path& p, error_code *ec=nullptr); 1290 _LIBCPP_FUNC_VIS 1291 void __rename(const path& from, const path& to, error_code *ec=nullptr); 1292 _LIBCPP_FUNC_VIS 1293 void __resize_file(const path& p, uintmax_t size, error_code *ec=nullptr); 1294 _LIBCPP_FUNC_VIS 1295 space_info __space(const path&, error_code *__ec=nullptr); 1296 _LIBCPP_FUNC_VIS 1297 file_status __status(const path&, error_code *__ec=nullptr); 1298 _LIBCPP_FUNC_VIS 1299 file_status __symlink_status(const path&, error_code *__ec=nullptr); 1300 _LIBCPP_FUNC_VIS 1301 path __system_complete(const path&, error_code *__ec=nullptr); 1302 _LIBCPP_FUNC_VIS 1303 path __temp_directory_path(error_code *__ec=nullptr); 1304 1305 inline _LIBCPP_INLINE_VISIBILITY 1306 path current_path() { 1307 return __current_path(); 1308 } 1309 1310 inline _LIBCPP_INLINE_VISIBILITY 1311 path current_path(error_code& __ec) { 1312 return __current_path(&__ec); 1313 } 1314 1315 inline _LIBCPP_INLINE_VISIBILITY 1316 void current_path(const path& __p) { 1317 __current_path(__p); 1318 } 1319 1320 inline _LIBCPP_INLINE_VISIBILITY 1321 void current_path(const path& __p, error_code& __ec) _NOEXCEPT { 1322 __current_path(__p, &__ec); 1323 } 1324 1325 _LIBCPP_FUNC_VIS 1326 path absolute(const path&, const path& __p2 = current_path()); 1327 1328 inline _LIBCPP_INLINE_VISIBILITY 1329 path canonical(const path& __p, const path& __base = current_path()) { 1330 return __canonical(__p, __base); 1331 } 1332 1333 inline _LIBCPP_INLINE_VISIBILITY 1334 path canonical(const path& __p, error_code& __ec) { 1335 path __base = __current_path(&__ec); 1336 if (__ec) return {}; 1337 return __canonical(__p, __base, &__ec); 1338 } 1339 1340 inline _LIBCPP_INLINE_VISIBILITY 1341 path canonical(const path& __p, const path& __base, error_code& __ec) { 1342 return __canonical(__p, __base, &__ec); 1343 } 1344 1345 inline _LIBCPP_INLINE_VISIBILITY 1346 void copy(const path& __from, const path& __to) { 1347 __copy(__from, __to, copy_options::none); 1348 } 1349 1350 inline _LIBCPP_INLINE_VISIBILITY 1351 void copy(const path& __from, const path& __to, error_code& __ec) _NOEXCEPT { 1352 __copy(__from, __to, copy_options::none, &__ec); 1353 } 1354 1355 inline _LIBCPP_INLINE_VISIBILITY 1356 void copy(const path& __from, const path& __to, copy_options __opt) { 1357 __copy(__from, __to, __opt); 1358 } 1359 1360 inline _LIBCPP_INLINE_VISIBILITY 1361 void copy(const path& __from, const path& __to, 1362 copy_options __opt, error_code& __ec) _NOEXCEPT { 1363 __copy(__from, __to, __opt, &__ec); 1364 } 1365 1366 inline _LIBCPP_INLINE_VISIBILITY 1367 bool copy_file(const path& __from, const path& __to) { 1368 return __copy_file(__from, __to, copy_options::none); 1369 } 1370 1371 inline _LIBCPP_INLINE_VISIBILITY 1372 bool copy_file(const path& __from, const path& __to, error_code& __ec) _NOEXCEPT { 1373 return __copy_file(__from, __to, copy_options::none, &__ec); 1374 } 1375 1376 inline _LIBCPP_INLINE_VISIBILITY 1377 bool copy_file(const path& __from, const path& __to, copy_options __opt) { 1378 return __copy_file(__from, __to, __opt); 1379 } 1380 1381 inline _LIBCPP_INLINE_VISIBILITY 1382 bool copy_file(const path& __from, const path& __to, 1383 copy_options __opt, error_code& __ec) _NOEXCEPT { 1384 return __copy_file(__from, __to, __opt, &__ec); 1385 } 1386 1387 inline _LIBCPP_INLINE_VISIBILITY 1388 void copy_symlink(const path& __existing, const path& __new) { 1389 __copy_symlink(__existing, __new); 1390 } 1391 1392 inline _LIBCPP_INLINE_VISIBILITY 1393 void copy_symlink(const path& __ext, const path& __new, error_code& __ec) _NOEXCEPT { 1394 __copy_symlink(__ext, __new, &__ec); 1395 } 1396 1397 inline _LIBCPP_INLINE_VISIBILITY 1398 bool create_directories(const path& __p) { 1399 return __create_directories(__p); 1400 } 1401 1402 inline _LIBCPP_INLINE_VISIBILITY 1403 bool create_directories(const path& __p, error_code& __ec) _NOEXCEPT { 1404 return __create_directories(__p, &__ec); 1405 } 1406 1407 inline _LIBCPP_INLINE_VISIBILITY 1408 bool create_directory(const path& __p) { 1409 return __create_directory(__p); 1410 } 1411 1412 inline _LIBCPP_INLINE_VISIBILITY 1413 bool create_directory(const path& __p, error_code& __ec) _NOEXCEPT { 1414 return __create_directory(__p, &__ec); 1415 } 1416 1417 inline _LIBCPP_INLINE_VISIBILITY 1418 bool create_directory(const path& __p, const path& __attrs) { 1419 return __create_directory(__p, __attrs); 1420 } 1421 1422 inline _LIBCPP_INLINE_VISIBILITY 1423 bool create_directory(const path& __p, const path& __attrs, error_code& __ec) _NOEXCEPT { 1424 return __create_directory(__p, __attrs, &__ec); 1425 } 1426 1427 inline _LIBCPP_INLINE_VISIBILITY 1428 void create_directory_symlink(const path& __to, const path& __new) { 1429 __create_directory_symlink(__to, __new); 1430 } 1431 1432 inline _LIBCPP_INLINE_VISIBILITY 1433 void create_directory_symlink(const path& __to, const path& __new, 1434 error_code& __ec) _NOEXCEPT { 1435 __create_directory_symlink(__to, __new, &__ec); 1436 } 1437 1438 inline _LIBCPP_INLINE_VISIBILITY 1439 void create_hard_link(const path& __to, const path& __new) { 1440 __create_hard_link(__to, __new); 1441 } 1442 1443 inline _LIBCPP_INLINE_VISIBILITY 1444 void create_hard_link(const path& __to, const path& __new, error_code& __ec) _NOEXCEPT { 1445 __create_hard_link(__to, __new, &__ec); 1446 } 1447 1448 inline _LIBCPP_INLINE_VISIBILITY 1449 void create_symlink(const path& __to, const path& __new) { 1450 __create_symlink(__to, __new); 1451 } 1452 1453 inline _LIBCPP_INLINE_VISIBILITY 1454 void create_symlink(const path& __to, const path& __new, error_code& __ec) _NOEXCEPT { 1455 return __create_symlink(__to, __new, &__ec); 1456 } 1457 1458 inline _LIBCPP_INLINE_VISIBILITY 1459 bool status_known(file_status __s) _NOEXCEPT { 1460 return __s.type() != file_type::none; 1461 } 1462 1463 inline _LIBCPP_INLINE_VISIBILITY 1464 bool exists(file_status __s) _NOEXCEPT { 1465 return status_known(__s) && __s.type() != file_type::not_found; 1466 } 1467 1468 inline _LIBCPP_INLINE_VISIBILITY 1469 bool exists(const path& __p) { 1470 return exists(__status(__p)); 1471 } 1472 1473 inline _LIBCPP_INLINE_VISIBILITY 1474 bool exists(const path& __p, error_code& __ec) _NOEXCEPT { 1475 auto __s = __status(__p, &__ec); 1476 if (status_known(__s)) __ec.clear(); 1477 return exists(__s); 1478 } 1479 1480 inline _LIBCPP_INLINE_VISIBILITY 1481 bool equivalent(const path& __p1, const path& __p2) { 1482 return __equivalent(__p1, __p2); 1483 } 1484 1485 inline _LIBCPP_INLINE_VISIBILITY 1486 bool equivalent(const path& __p1, const path& __p2, error_code& __ec) _NOEXCEPT { 1487 return __equivalent(__p1, __p2, &__ec); 1488 } 1489 1490 inline _LIBCPP_INLINE_VISIBILITY 1491 uintmax_t file_size(const path& __p) { 1492 return __file_size(__p); 1493 } 1494 1495 inline _LIBCPP_INLINE_VISIBILITY 1496 uintmax_t file_size(const path& __p, error_code& __ec) _NOEXCEPT { 1497 return __file_size(__p, &__ec); 1498 } 1499 1500 inline _LIBCPP_INLINE_VISIBILITY 1501 uintmax_t hard_link_count(const path& __p) { 1502 return __hard_link_count(__p); 1503 } 1504 1505 inline _LIBCPP_INLINE_VISIBILITY 1506 uintmax_t hard_link_count(const path& __p, error_code& __ec) _NOEXCEPT { 1507 return __hard_link_count(__p, &__ec); 1508 } 1509 1510 inline _LIBCPP_INLINE_VISIBILITY 1511 bool is_block_file(file_status __s) _NOEXCEPT { 1512 return __s.type() == file_type::block; 1513 } 1514 1515 inline _LIBCPP_INLINE_VISIBILITY 1516 bool is_block_file(const path& __p) { 1517 return is_block_file(__status(__p)); 1518 } 1519 1520 inline _LIBCPP_INLINE_VISIBILITY 1521 bool is_block_file(const path& __p, error_code& __ec) _NOEXCEPT { 1522 return is_block_file(__status(__p, &__ec)); 1523 } 1524 1525 inline _LIBCPP_INLINE_VISIBILITY 1526 bool is_character_file(file_status __s) _NOEXCEPT { 1527 return __s.type() == file_type::character; 1528 } 1529 1530 inline _LIBCPP_INLINE_VISIBILITY 1531 bool is_character_file(const path& __p) { 1532 return is_character_file(__status(__p)); 1533 } 1534 1535 inline _LIBCPP_INLINE_VISIBILITY 1536 bool is_character_file(const path& __p, error_code& __ec) _NOEXCEPT { 1537 return is_character_file(__status(__p, &__ec)); 1538 } 1539 1540 inline _LIBCPP_INLINE_VISIBILITY 1541 bool is_directory(file_status __s) _NOEXCEPT { 1542 return __s.type() == file_type::directory; 1543 } 1544 1545 inline _LIBCPP_INLINE_VISIBILITY 1546 bool is_directory(const path& __p) { 1547 return is_directory(__status(__p)); 1548 } 1549 1550 inline _LIBCPP_INLINE_VISIBILITY 1551 bool is_directory(const path& __p, error_code& __ec) _NOEXCEPT { 1552 return is_directory(__status(__p, &__ec)); 1553 } 1554 1555 inline _LIBCPP_INLINE_VISIBILITY 1556 bool is_empty(const path& __p) { 1557 return __fs_is_empty(__p); 1558 } 1559 1560 inline _LIBCPP_INLINE_VISIBILITY 1561 bool is_empty(const path& __p, error_code& __ec) _NOEXCEPT { 1562 return __fs_is_empty(__p, &__ec); 1563 } 1564 1565 inline _LIBCPP_INLINE_VISIBILITY 1566 bool is_fifo(file_status __s) _NOEXCEPT { 1567 return __s.type() == file_type::fifo; 1568 } 1569 inline _LIBCPP_INLINE_VISIBILITY 1570 bool is_fifo(const path& __p) { 1571 return is_fifo(__status(__p)); 1572 } 1573 1574 inline _LIBCPP_INLINE_VISIBILITY 1575 bool is_fifo(const path& __p, error_code& __ec) _NOEXCEPT { 1576 return is_fifo(__status(__p, &__ec)); 1577 } 1578 1579 inline _LIBCPP_INLINE_VISIBILITY 1580 bool is_regular_file(file_status __s) _NOEXCEPT { 1581 return __s.type() == file_type::regular; 1582 } 1583 1584 inline _LIBCPP_INLINE_VISIBILITY 1585 bool is_regular_file(const path& __p) { 1586 return is_regular_file(__status(__p)); 1587 } 1588 1589 inline _LIBCPP_INLINE_VISIBILITY 1590 bool is_regular_file(const path& __p, error_code& __ec) _NOEXCEPT { 1591 return is_regular_file(__status(__p, &__ec)); 1592 } 1593 1594 inline _LIBCPP_INLINE_VISIBILITY 1595 bool is_socket(file_status __s) _NOEXCEPT { 1596 return __s.type() == file_type::socket; 1597 } 1598 1599 inline _LIBCPP_INLINE_VISIBILITY 1600 bool is_socket(const path& __p) { 1601 return is_socket(__status(__p)); 1602 } 1603 1604 inline _LIBCPP_INLINE_VISIBILITY 1605 bool is_socket(const path& __p, error_code& __ec) _NOEXCEPT { 1606 return is_socket(__status(__p, &__ec)); 1607 } 1608 1609 inline _LIBCPP_INLINE_VISIBILITY 1610 bool is_symlink(file_status __s) _NOEXCEPT { 1611 return __s.type() == file_type::symlink; 1612 } 1613 1614 inline _LIBCPP_INLINE_VISIBILITY 1615 bool is_symlink(const path& __p) { 1616 return is_symlink(__symlink_status(__p)); 1617 } 1618 1619 inline _LIBCPP_INLINE_VISIBILITY 1620 bool is_symlink(const path& __p, error_code& __ec) _NOEXCEPT { 1621 return is_symlink(__symlink_status(__p, &__ec)); 1622 } 1623 1624 inline _LIBCPP_INLINE_VISIBILITY 1625 bool is_other(file_status __s) _NOEXCEPT { 1626 return exists(__s) 1627 && !is_regular_file(__s) && !is_directory(__s) && !is_symlink(__s); 1628 } 1629 1630 inline _LIBCPP_INLINE_VISIBILITY 1631 bool is_other(const path& __p) { 1632 return is_other(__status(__p)); 1633 } 1634 1635 inline _LIBCPP_INLINE_VISIBILITY 1636 bool is_other(const path& __p, error_code& __ec) _NOEXCEPT { 1637 return is_other(__status(__p, &__ec)); 1638 } 1639 1640 inline _LIBCPP_INLINE_VISIBILITY 1641 file_time_type last_write_time(const path& __p) { 1642 return __last_write_time(__p); 1643 } 1644 1645 inline _LIBCPP_INLINE_VISIBILITY 1646 file_time_type last_write_time(const path& __p, error_code& __ec) _NOEXCEPT { 1647 return __last_write_time(__p, &__ec); 1648 } 1649 1650 inline _LIBCPP_INLINE_VISIBILITY 1651 void last_write_time(const path& __p, file_time_type __t) { 1652 __last_write_time(__p, __t); 1653 } 1654 1655 inline _LIBCPP_INLINE_VISIBILITY 1656 void last_write_time(const path& __p, file_time_type __t, error_code& __ec) _NOEXCEPT { 1657 __last_write_time(__p, __t, &__ec); 1658 } 1659 1660 inline _LIBCPP_INLINE_VISIBILITY 1661 void permissions(const path& __p, perms __prms) { 1662 __permissions(__p, __prms); 1663 } 1664 1665 inline _LIBCPP_INLINE_VISIBILITY 1666 void permissions(const path& __p, perms __prms, error_code& __ec) { 1667 __permissions(__p, __prms, &__ec); 1668 } 1669 1670 inline _LIBCPP_INLINE_VISIBILITY 1671 path read_symlink(const path& __p) { 1672 return __read_symlink(__p); 1673 } 1674 1675 inline _LIBCPP_INLINE_VISIBILITY 1676 path read_symlink(const path& __p, error_code& __ec) { 1677 return __read_symlink(__p, &__ec); 1678 } 1679 1680 inline _LIBCPP_INLINE_VISIBILITY 1681 bool remove(const path& __p) { 1682 return __remove(__p); 1683 } 1684 1685 inline _LIBCPP_INLINE_VISIBILITY 1686 bool remove(const path& __p, error_code& __ec) _NOEXCEPT { 1687 return __remove(__p, &__ec); 1688 } 1689 1690 inline _LIBCPP_INLINE_VISIBILITY 1691 uintmax_t remove_all(const path& __p) { 1692 return __remove_all(__p); 1693 } 1694 1695 inline _LIBCPP_INLINE_VISIBILITY 1696 uintmax_t remove_all(const path& __p, error_code& __ec) _NOEXCEPT { 1697 return __remove_all(__p, &__ec); 1698 } 1699 1700 inline _LIBCPP_INLINE_VISIBILITY 1701 void rename(const path& __from, const path& __to) { 1702 return __rename(__from, __to); 1703 } 1704 1705 inline _LIBCPP_INLINE_VISIBILITY 1706 void rename(const path& __from, const path& __to, error_code& __ec) _NOEXCEPT { 1707 return __rename(__from, __to, &__ec); 1708 } 1709 1710 inline _LIBCPP_INLINE_VISIBILITY 1711 void resize_file(const path& __p, uintmax_t __ns) { 1712 return __resize_file(__p, __ns); 1713 } 1714 1715 inline _LIBCPP_INLINE_VISIBILITY 1716 void resize_file(const path& __p, uintmax_t __ns, error_code& __ec) _NOEXCEPT { 1717 return __resize_file(__p, __ns, &__ec); 1718 } 1719 1720 inline _LIBCPP_INLINE_VISIBILITY 1721 space_info space(const path& __p) { 1722 return __space(__p); 1723 } 1724 1725 inline _LIBCPP_INLINE_VISIBILITY 1726 space_info space(const path& __p, error_code& __ec) _NOEXCEPT { 1727 return __space(__p, &__ec); 1728 } 1729 1730 inline _LIBCPP_INLINE_VISIBILITY 1731 file_status status(const path& __p) { 1732 return __status(__p); 1733 } 1734 1735 inline _LIBCPP_INLINE_VISIBILITY 1736 file_status status(const path& __p, error_code& __ec) _NOEXCEPT { 1737 return __status(__p, &__ec); 1738 } 1739 1740 inline _LIBCPP_INLINE_VISIBILITY 1741 file_status symlink_status(const path& __p) { 1742 return __symlink_status(__p); 1743 } 1744 1745 inline _LIBCPP_INLINE_VISIBILITY 1746 file_status symlink_status(const path& __p, error_code& __ec) _NOEXCEPT { 1747 return __symlink_status(__p, &__ec); 1748 } 1749 1750 inline _LIBCPP_INLINE_VISIBILITY 1751 path system_complete(const path& __p) { 1752 return __system_complete(__p); 1753 } 1754 1755 inline _LIBCPP_INLINE_VISIBILITY 1756 path system_complete(const path& __p, error_code& __ec) { 1757 return __system_complete(__p, &__ec); 1758 } 1759 1760 inline _LIBCPP_INLINE_VISIBILITY 1761 path temp_directory_path() { 1762 return __temp_directory_path(); 1763 } 1764 1765 inline _LIBCPP_INLINE_VISIBILITY 1766 path temp_directory_path(error_code& __ec) { 1767 return __temp_directory_path(&__ec); 1768 } 1769 1770 1771 class directory_entry 1772 { 1773 typedef _VSTD_FS::path _Path; 1774 1775 public: 1776 // constructors and destructors 1777 directory_entry() _NOEXCEPT = default; 1778 directory_entry(directory_entry const&) = default; 1779 directory_entry(directory_entry&&) _NOEXCEPT = default; 1780 1781 _LIBCPP_INLINE_VISIBILITY 1782 explicit directory_entry(_Path const& __p) : __p_(__p) {} 1783 1784 ~directory_entry() {} 1785 1786 directory_entry& operator=(directory_entry const&) = default; 1787 directory_entry& operator=(directory_entry&&) _NOEXCEPT = default; 1788 1789 _LIBCPP_INLINE_VISIBILITY 1790 void assign(_Path const& __p) { 1791 __p_ = __p; 1792 } 1793 1794 _LIBCPP_INLINE_VISIBILITY 1795 void replace_filename(_Path const& __p) { 1796 __p_ = __p_.parent_path() / __p; 1797 } 1798 1799 _LIBCPP_INLINE_VISIBILITY 1800 _Path const& path() const _NOEXCEPT { 1801 return __p_; 1802 } 1803 1804 _LIBCPP_INLINE_VISIBILITY 1805 operator const _Path&() const _NOEXCEPT { 1806 return __p_; 1807 } 1808 1809 _LIBCPP_INLINE_VISIBILITY 1810 file_status status() const { 1811 return _VSTD_FS::status(__p_); 1812 } 1813 1814 _LIBCPP_INLINE_VISIBILITY 1815 file_status status(error_code& __ec) const _NOEXCEPT { 1816 return _VSTD_FS::status(__p_, __ec); 1817 } 1818 1819 _LIBCPP_INLINE_VISIBILITY 1820 file_status symlink_status() const { 1821 return _VSTD_FS::symlink_status(__p_); 1822 } 1823 1824 _LIBCPP_INLINE_VISIBILITY 1825 file_status symlink_status(error_code& __ec) const _NOEXCEPT { 1826 return _VSTD_FS::symlink_status(__p_, __ec); 1827 } 1828 1829 _LIBCPP_INLINE_VISIBILITY 1830 bool operator< (directory_entry const& __rhs) const _NOEXCEPT { 1831 return __p_ < __rhs.__p_; 1832 } 1833 1834 _LIBCPP_INLINE_VISIBILITY 1835 bool operator==(directory_entry const& __rhs) const _NOEXCEPT { 1836 return __p_ == __rhs.__p_; 1837 } 1838 1839 _LIBCPP_INLINE_VISIBILITY 1840 bool operator!=(directory_entry const& __rhs) const _NOEXCEPT { 1841 return __p_ != __rhs.__p_; 1842 } 1843 1844 _LIBCPP_INLINE_VISIBILITY 1845 bool operator<=(directory_entry const& __rhs) const _NOEXCEPT { 1846 return __p_ <= __rhs.__p_; 1847 } 1848 1849 _LIBCPP_INLINE_VISIBILITY 1850 bool operator> (directory_entry const& __rhs) const _NOEXCEPT { 1851 return __p_ > __rhs.__p_; 1852 } 1853 1854 _LIBCPP_INLINE_VISIBILITY 1855 bool operator>=(directory_entry const& __rhs) const _NOEXCEPT { 1856 return __p_ >= __rhs.__p_; 1857 } 1858 private: 1859 _Path __p_; 1860 }; 1861 1862 1863 class directory_iterator; 1864 class recursive_directory_iterator; 1865 class __dir_stream; 1866 1867 class __dir_element_proxy { 1868 public: 1869 1870 inline _LIBCPP_INLINE_VISIBILITY 1871 directory_entry operator*() { return _VSTD::move(__elem_); } 1872 1873 private: 1874 friend class directory_iterator; 1875 friend class recursive_directory_iterator; 1876 explicit __dir_element_proxy(directory_entry const& __e) : __elem_(__e) {} 1877 __dir_element_proxy(__dir_element_proxy&& __o) : __elem_(_VSTD::move(__o.__elem_)) {} 1878 directory_entry __elem_; 1879 }; 1880 1881 class directory_iterator 1882 { 1883 public: 1884 typedef directory_entry value_type; 1885 typedef ptrdiff_t difference_type; 1886 typedef value_type const* pointer; 1887 typedef value_type const& reference; 1888 typedef input_iterator_tag iterator_category; 1889 1890 public: 1891 //ctor & dtor 1892 directory_iterator() _NOEXCEPT 1893 { } 1894 1895 explicit directory_iterator(const path& __p) 1896 : directory_iterator(__p, nullptr) 1897 { } 1898 1899 directory_iterator(const path& __p, directory_options __opts) 1900 : directory_iterator(__p, nullptr, __opts) 1901 { } 1902 1903 directory_iterator(const path& __p, error_code& __ec) _NOEXCEPT 1904 : directory_iterator(__p, &__ec) 1905 { } 1906 1907 directory_iterator(const path& __p, directory_options __opts, 1908 error_code& __ec) _NOEXCEPT 1909 : directory_iterator(__p, &__ec, __opts) 1910 { } 1911 1912 directory_iterator(const directory_iterator&) = default; 1913 directory_iterator(directory_iterator&&) = default; 1914 directory_iterator& operator=(const directory_iterator&) = default; 1915 1916 directory_iterator& operator=(directory_iterator&& __o) _NOEXCEPT { 1917 // non-default implementation provided to support self-move assign. 1918 if (this != &__o) { 1919 __imp_ = _VSTD::move(__o.__imp_); 1920 } 1921 return *this; 1922 } 1923 1924 ~directory_iterator() = default; 1925 1926 const directory_entry& operator*() const { 1927 _LIBCPP_ASSERT(__imp_, "The end iterator cannot be dereferenced"); 1928 return __dereference(); 1929 } 1930 1931 const directory_entry* operator->() const 1932 { return &**this; } 1933 1934 directory_iterator& operator++() 1935 { return __increment(); } 1936 1937 __dir_element_proxy operator++(int) { 1938 __dir_element_proxy __p(**this); 1939 __increment(); 1940 return __p; 1941 } 1942 1943 directory_iterator& increment(error_code& __ec) _NOEXCEPT 1944 { return __increment(&__ec); } 1945 1946 private: 1947 inline _LIBCPP_INLINE_VISIBILITY 1948 friend bool operator==(const directory_iterator& __lhs, 1949 const directory_iterator& __rhs) _NOEXCEPT; 1950 1951 // construct the dir_stream 1952 _LIBCPP_FUNC_VIS 1953 directory_iterator(const path&, error_code *, 1954 directory_options = directory_options::none); 1955 1956 _LIBCPP_FUNC_VIS 1957 directory_iterator& __increment(error_code * __ec = nullptr); 1958 1959 _LIBCPP_FUNC_VIS 1960 const directory_entry& __dereference() const; 1961 1962 private: 1963 shared_ptr<__dir_stream> __imp_; 1964 }; 1965 1966 1967 inline _LIBCPP_INLINE_VISIBILITY 1968 bool operator==(const directory_iterator& __lhs, 1969 const directory_iterator& __rhs) _NOEXCEPT { 1970 return __lhs.__imp_ == __rhs.__imp_; 1971 } 1972 1973 inline _LIBCPP_INLINE_VISIBILITY 1974 bool operator!=(const directory_iterator& __lhs, 1975 const directory_iterator& __rhs) _NOEXCEPT { 1976 return !(__lhs == __rhs); 1977 } 1978 1979 // enable directory_iterator range-based for statements 1980 inline _LIBCPP_INLINE_VISIBILITY 1981 directory_iterator begin(directory_iterator __iter) _NOEXCEPT { 1982 return __iter; 1983 } 1984 1985 inline _LIBCPP_INLINE_VISIBILITY 1986 directory_iterator end(const directory_iterator&) _NOEXCEPT { 1987 return directory_iterator(); 1988 } 1989 1990 class recursive_directory_iterator { 1991 public: 1992 using value_type = directory_entry; 1993 using difference_type = std::ptrdiff_t; 1994 using pointer = directory_entry const *; 1995 using reference = directory_entry const &; 1996 using iterator_category = std::input_iterator_tag; 1997 1998 public: 1999 // constructors and destructor 2000 _LIBCPP_INLINE_VISIBILITY 2001 recursive_directory_iterator() _NOEXCEPT 2002 : __rec_(false) 2003 {} 2004 2005 _LIBCPP_INLINE_VISIBILITY 2006 explicit recursive_directory_iterator(const path& __p, 2007 directory_options __xoptions = directory_options::none) 2008 : recursive_directory_iterator(__p, __xoptions, nullptr) 2009 { } 2010 2011 _LIBCPP_INLINE_VISIBILITY 2012 recursive_directory_iterator(const path& __p, 2013 directory_options __xoptions, error_code& __ec) _NOEXCEPT 2014 : recursive_directory_iterator(__p, __xoptions, &__ec) 2015 { } 2016 2017 _LIBCPP_INLINE_VISIBILITY 2018 recursive_directory_iterator(const path& __p, error_code& __ec) _NOEXCEPT 2019 : recursive_directory_iterator(__p, directory_options::none, &__ec) 2020 { } 2021 2022 recursive_directory_iterator(const recursive_directory_iterator&) = default; 2023 recursive_directory_iterator(recursive_directory_iterator&&) = default; 2024 2025 recursive_directory_iterator & 2026 operator=(const recursive_directory_iterator&) = default; 2027 2028 _LIBCPP_INLINE_VISIBILITY 2029 recursive_directory_iterator & 2030 operator=(recursive_directory_iterator&& __o) noexcept { 2031 // non-default implementation provided to support self-move assign. 2032 if (this != &__o) { 2033 __imp_ = _VSTD::move(__o.__imp_); 2034 __rec_ = __o.__rec_; 2035 } 2036 return *this; 2037 } 2038 2039 ~recursive_directory_iterator() = default; 2040 2041 _LIBCPP_INLINE_VISIBILITY 2042 const directory_entry& operator*() const 2043 { return __dereference(); } 2044 2045 _LIBCPP_INLINE_VISIBILITY 2046 const directory_entry* operator->() const 2047 { return &__dereference(); } 2048 2049 recursive_directory_iterator& operator++() 2050 { return __increment(); } 2051 2052 _LIBCPP_INLINE_VISIBILITY 2053 __dir_element_proxy operator++(int) { 2054 __dir_element_proxy __p(**this); 2055 __increment(); 2056 return __p; 2057 } 2058 2059 _LIBCPP_INLINE_VISIBILITY 2060 recursive_directory_iterator& increment(error_code& __ec) _NOEXCEPT 2061 { return __increment(&__ec); } 2062 2063 _LIBCPP_FUNC_VIS directory_options options() const; 2064 _LIBCPP_FUNC_VIS int depth() const; 2065 2066 _LIBCPP_INLINE_VISIBILITY 2067 void pop() { __pop(); } 2068 2069 _LIBCPP_INLINE_VISIBILITY 2070 void pop(error_code& __ec) 2071 { __pop(&__ec); } 2072 2073 _LIBCPP_INLINE_VISIBILITY 2074 bool recursion_pending() const 2075 { return __rec_; } 2076 2077 _LIBCPP_INLINE_VISIBILITY 2078 void disable_recursion_pending() 2079 { __rec_ = false; } 2080 2081 private: 2082 recursive_directory_iterator(const path& __p, directory_options __opt, 2083 error_code *__ec); 2084 2085 _LIBCPP_FUNC_VIS 2086 const directory_entry& __dereference() const; 2087 2088 _LIBCPP_FUNC_VIS 2089 bool __try_recursion(error_code* __ec); 2090 2091 _LIBCPP_FUNC_VIS 2092 void __advance(error_code* __ec=nullptr); 2093 2094 _LIBCPP_FUNC_VIS 2095 recursive_directory_iterator& __increment(error_code *__ec=nullptr); 2096 2097 _LIBCPP_FUNC_VIS 2098 void __pop(error_code* __ec=nullptr); 2099 2100 inline _LIBCPP_INLINE_VISIBILITY 2101 friend bool operator==(const recursive_directory_iterator&, 2102 const recursive_directory_iterator&) _NOEXCEPT; 2103 2104 struct __shared_imp; 2105 shared_ptr<__shared_imp> __imp_; 2106 bool __rec_; 2107 }; // class recursive_directory_iterator 2108 2109 2110 inline _LIBCPP_INLINE_VISIBILITY 2111 bool operator==(const recursive_directory_iterator& __lhs, 2112 const recursive_directory_iterator& __rhs) _NOEXCEPT 2113 { 2114 return __lhs.__imp_ == __rhs.__imp_; 2115 } 2116 2117 _LIBCPP_INLINE_VISIBILITY 2118 inline bool operator!=(const recursive_directory_iterator& __lhs, 2119 const recursive_directory_iterator& __rhs) _NOEXCEPT 2120 { 2121 return !(__lhs == __rhs); 2122 } 2123 // enable recursive_directory_iterator range-based for statements 2124 inline _LIBCPP_INLINE_VISIBILITY 2125 recursive_directory_iterator begin(recursive_directory_iterator __iter) _NOEXCEPT { 2126 return __iter; 2127 } 2128 2129 inline _LIBCPP_INLINE_VISIBILITY 2130 recursive_directory_iterator end(const recursive_directory_iterator&) _NOEXCEPT { 2131 return recursive_directory_iterator(); 2132 } 2133 2134 _LIBCPP_END_NAMESPACE_EXPERIMENTAL_FILESYSTEM 2135 2136 #endif // _LIBCPP_EXPERIMENTAL_FILESYSTEM 2137
