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1 | // boost/filesystem/directory.hpp ---------------------------------------------------// |
2 | ||
3 | // Copyright Beman Dawes 2002-2009 | |
4 | // Copyright Jan Langer 2002 | |
5 | // Copyright Dietmar Kuehl 2001 | |
6 | // Copyright Vladimir Prus 2002 | |
7 | // Copyright Andrey Semashev 2019 | |
8 | ||
9 | // Distributed under the Boost Software License, Version 1.0. | |
10 | // See http://www.boost.org/LICENSE_1_0.txt | |
11 | ||
12 | // Library home page: http://www.boost.org/libs/filesystem | |
13 | ||
14 | //--------------------------------------------------------------------------------------// | |
15 | ||
16 | #ifndef BOOST_FILESYSTEM3_DIRECTORY_HPP | |
17 | #define BOOST_FILESYSTEM3_DIRECTORY_HPP | |
18 | ||
19 | #include <boost/config.hpp> | |
20 | ||
21 | # if defined( BOOST_NO_STD_WSTRING ) | |
22 | # error Configuration not supported: Boost.Filesystem V3 and later requires std::wstring support | |
23 | # endif | |
24 | ||
25 | #include <boost/filesystem/config.hpp> | |
26 | #include <boost/filesystem/path.hpp> | |
27 | #include <boost/filesystem/file_status.hpp> | |
28 | ||
29 | #include <string> | |
30 | #include <vector> | |
31 | #include <utility> // std::move | |
32 | ||
33 | #include <boost/assert.hpp> | |
34 | #include <boost/core/scoped_enum.hpp> | |
35 | #include <boost/detail/bitmask.hpp> | |
36 | #include <boost/system/error_code.hpp> | |
37 | #include <boost/smart_ptr/intrusive_ptr.hpp> | |
38 | #include <boost/smart_ptr/intrusive_ref_counter.hpp> | |
39 | #include <boost/iterator/iterator_facade.hpp> | |
40 | #include <boost/iterator/iterator_categories.hpp> | |
41 | ||
42 | #include <boost/config/abi_prefix.hpp> // must be the last #include | |
43 | ||
44 | //--------------------------------------------------------------------------------------// | |
45 | ||
46 | namespace boost { | |
47 | namespace filesystem { | |
48 | ||
49 | //--------------------------------------------------------------------------------------// | |
50 | // // | |
51 | // directory_entry // | |
52 | // // | |
53 | //--------------------------------------------------------------------------------------// | |
54 | ||
55 | // GCC has a problem with a member function named path within a namespace or | |
56 | // sub-namespace that also has a class named path. The workaround is to always | |
57 | // fully qualify the name path when it refers to the class name. | |
58 | ||
59 | class directory_entry | |
60 | { | |
61 | public: | |
62 | typedef boost::filesystem::path::value_type value_type; // enables class path ctor taking directory_entry | |
63 | ||
64 | directory_entry() BOOST_NOEXCEPT {} | |
65 | explicit directory_entry(const boost::filesystem::path& p) : | |
66 | m_path(p), m_status(file_status()), m_symlink_status(file_status()) | |
67 | { | |
68 | } | |
69 | directory_entry(const boost::filesystem::path& p, | |
70 | file_status st, file_status symlink_st = file_status()) : | |
71 | m_path(p), m_status(st), m_symlink_status(symlink_st) | |
72 | { | |
73 | } | |
74 | ||
75 | directory_entry(const directory_entry& rhs) : | |
76 | m_path(rhs.m_path), m_status(rhs.m_status), m_symlink_status(rhs.m_symlink_status) | |
77 | { | |
78 | } | |
79 | ||
80 | directory_entry& operator=(const directory_entry& rhs) | |
81 | { | |
82 | m_path = rhs.m_path; | |
83 | m_status = rhs.m_status; | |
84 | m_symlink_status = rhs.m_symlink_status; | |
85 | return *this; | |
86 | } | |
87 | ||
88 | // As of October 2015 the interaction between noexcept and =default is so troublesome | |
89 | // for VC++, GCC, and probably other compilers, that =default is not used with noexcept | |
90 | // functions. GCC is not even consistent for the same release on different platforms. | |
91 | ||
92 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
93 | directory_entry(directory_entry&& rhs) BOOST_NOEXCEPT : | |
94 | m_path(std::move(rhs.m_path)), m_status(std::move(rhs.m_status)), m_symlink_status(std::move(rhs.m_symlink_status)) | |
95 | { | |
96 | } | |
97 | directory_entry& operator=(directory_entry&& rhs) BOOST_NOEXCEPT | |
98 | { | |
99 | m_path = std::move(rhs.m_path); | |
100 | m_status = std::move(rhs.m_status); | |
101 | m_symlink_status = std::move(rhs.m_symlink_status); | |
102 | return *this; | |
103 | } | |
104 | #endif | |
105 | ||
106 | void assign(const boost::filesystem::path& p, | |
107 | file_status st = file_status(), file_status symlink_st = file_status()) | |
108 | { | |
109 | m_path = p; | |
110 | m_status = st; | |
111 | m_symlink_status = symlink_st; | |
112 | } | |
113 | ||
114 | void replace_filename(const boost::filesystem::path& p, | |
115 | file_status st = file_status(), file_status symlink_st = file_status()) | |
116 | { | |
117 | m_path.remove_filename(); | |
118 | m_path /= p; | |
119 | m_status = st; | |
120 | m_symlink_status = symlink_st; | |
121 | } | |
122 | ||
123 | # ifndef BOOST_FILESYSTEM_NO_DEPRECATED | |
124 | void replace_leaf(const boost::filesystem::path& p, file_status st, file_status symlink_st) | |
125 | { | |
126 | replace_filename(p, st, symlink_st); | |
127 | } | |
128 | # endif | |
129 | ||
130 | const boost::filesystem::path& path() const BOOST_NOEXCEPT { return m_path; } | |
131 | operator const boost::filesystem::path&() const BOOST_NOEXCEPT { return m_path; } | |
132 | file_status status() const { return get_status(); } | |
133 | file_status status(system::error_code& ec) const BOOST_NOEXCEPT { return get_status(&ec); } | |
134 | file_status symlink_status() const { return get_symlink_status(); } | |
135 | file_status symlink_status(system::error_code& ec) const BOOST_NOEXCEPT { return get_symlink_status(&ec); } | |
136 | ||
137 | bool operator==(const directory_entry& rhs) const BOOST_NOEXCEPT { return m_path == rhs.m_path; } | |
138 | bool operator!=(const directory_entry& rhs) const BOOST_NOEXCEPT { return m_path != rhs.m_path; } | |
139 | bool operator< (const directory_entry& rhs) const BOOST_NOEXCEPT { return m_path < rhs.m_path; } | |
140 | bool operator<=(const directory_entry& rhs) const BOOST_NOEXCEPT { return m_path <= rhs.m_path; } | |
141 | bool operator> (const directory_entry& rhs) const BOOST_NOEXCEPT { return m_path > rhs.m_path; } | |
142 | bool operator>=(const directory_entry& rhs) const BOOST_NOEXCEPT { return m_path >= rhs.m_path; } | |
143 | ||
144 | private: | |
145 | BOOST_FILESYSTEM_DECL file_status get_status(system::error_code* ec=0) const; | |
146 | BOOST_FILESYSTEM_DECL file_status get_symlink_status(system::error_code* ec=0) const; | |
147 | ||
148 | private: | |
149 | boost::filesystem::path m_path; | |
150 | mutable file_status m_status; // stat()-like | |
151 | mutable file_status m_symlink_status; // lstat()-like | |
152 | }; // directory_entry | |
153 | ||
154 | ||
155 | //--------------------------------------------------------------------------------------// | |
156 | // // | |
157 | // directory_entry overloads // | |
158 | // // | |
159 | //--------------------------------------------------------------------------------------// | |
160 | ||
161 | // Without these functions, calling (for example) 'is_directory' with a 'directory_entry' results in: | |
162 | // - a conversion to 'path' using 'operator const boost::filesystem::path&()', | |
163 | // - then a call to 'is_directory(const path& p)' which recomputes the status with 'detail::status(p)'. | |
164 | // | |
165 | // These functions avoid a costly recomputation of the status if one calls 'is_directory(e)' instead of 'is_directory(e.status)' | |
166 | ||
167 | inline file_status status (const directory_entry& e) BOOST_NOEXCEPT { return e.status(); } | |
168 | inline bool type_present (const directory_entry& e) BOOST_NOEXCEPT { return filesystem::type_present(e.status()); } | |
169 | inline bool status_known (const directory_entry& e) BOOST_NOEXCEPT { return filesystem::status_known(e.status()); } | |
170 | inline bool exists (const directory_entry& e) BOOST_NOEXCEPT { return filesystem::exists(e.status()); } | |
171 | inline bool is_regular_file(const directory_entry& e) BOOST_NOEXCEPT { return filesystem::is_regular_file(e.status()); } | |
172 | inline bool is_directory (const directory_entry& e) BOOST_NOEXCEPT { return filesystem::is_directory(e.status()); } | |
173 | inline bool is_symlink (const directory_entry& e) BOOST_NOEXCEPT { return filesystem::is_symlink(e.status()); } | |
174 | inline bool is_other (const directory_entry& e) BOOST_NOEXCEPT { return filesystem::is_other(e.status()); } | |
175 | #ifndef BOOST_FILESYSTEM_NO_DEPRECATED | |
176 | inline bool is_regular (const directory_entry& e) BOOST_NOEXCEPT { return filesystem::is_regular(e.status()); } | |
177 | #endif | |
178 | ||
179 | //--------------------------------------------------------------------------------------// | |
180 | // // | |
181 | // directory_iterator helpers // | |
182 | // // | |
183 | //--------------------------------------------------------------------------------------// | |
184 | ||
185 | BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(directory_options, unsigned int) | |
186 | { | |
187 | none = 0u, | |
188 | skip_permission_denied = 1u, // if a directory cannot be opened because of insufficient permissions, pretend that the directory is empty | |
189 | follow_directory_symlink = 1u << 1, // recursive_directory_iterator: follow directory symlinks | |
190 | skip_dangling_symlinks = 1u << 2, // non-standard extension for recursive_directory_iterator: don't follow dangling directory symlinks, | |
191 | pop_on_error = 1u << 3, // non-standard extension for recursive_directory_iterator: instead of producing an end iterator on errors, | |
192 | // repeatedly invoke pop() until it succeeds or the iterator becomes equal to end iterator | |
193 | _detail_no_push = 1u << 4 // internal use only | |
194 | } | |
195 | BOOST_SCOPED_ENUM_DECLARE_END(directory_options) | |
196 | ||
197 | BOOST_BITMASK(BOOST_SCOPED_ENUM_NATIVE(directory_options)) | |
198 | ||
199 | class directory_iterator; | |
200 | ||
201 | namespace detail { | |
202 | ||
203 | BOOST_FILESYSTEM_DECL | |
204 | system::error_code dir_itr_close(// never throws() | |
205 | void*& handle | |
206 | #if defined(BOOST_POSIX_API) | |
207 | , void*& buffer | |
208 | #endif | |
209 | ) BOOST_NOEXCEPT; | |
210 | ||
211 | struct dir_itr_imp : | |
212 | public boost::intrusive_ref_counter< dir_itr_imp > | |
213 | { | |
214 | directory_entry dir_entry; | |
215 | void* handle; | |
216 | ||
217 | #if defined(BOOST_POSIX_API) | |
218 | void* buffer; // see dir_itr_increment implementation | |
219 | #endif | |
220 | ||
221 | dir_itr_imp() BOOST_NOEXCEPT : | |
222 | handle(0) | |
223 | #if defined(BOOST_POSIX_API) | |
224 | , buffer(0) | |
225 | #endif | |
226 | { | |
227 | } | |
228 | ||
229 | ~dir_itr_imp() BOOST_NOEXCEPT | |
230 | { | |
231 | dir_itr_close(handle | |
232 | #if defined(BOOST_POSIX_API) | |
233 | , buffer | |
234 | #endif | |
235 | ); | |
236 | } | |
237 | }; | |
238 | ||
239 | // see path::iterator: comment below | |
240 | BOOST_FILESYSTEM_DECL void directory_iterator_construct(directory_iterator& it, const path& p, unsigned int opts, system::error_code* ec); | |
241 | BOOST_FILESYSTEM_DECL void directory_iterator_increment(directory_iterator& it, system::error_code* ec); | |
242 | ||
243 | } // namespace detail | |
244 | ||
245 | //--------------------------------------------------------------------------------------// | |
246 | // // | |
247 | // directory_iterator // | |
248 | // // | |
249 | //--------------------------------------------------------------------------------------// | |
250 | ||
251 | class directory_iterator : | |
252 | public boost::iterator_facade< | |
253 | directory_iterator, | |
254 | directory_entry, | |
255 | boost::single_pass_traversal_tag | |
256 | > | |
257 | { | |
258 | friend class boost::iterator_core_access; | |
259 | ||
260 | friend BOOST_FILESYSTEM_DECL void detail::directory_iterator_construct(directory_iterator& it, const path& p, unsigned int opts, system::error_code* ec); | |
261 | friend BOOST_FILESYSTEM_DECL void detail::directory_iterator_increment(directory_iterator& it, system::error_code* ec); | |
262 | ||
263 | public: | |
264 | directory_iterator() BOOST_NOEXCEPT {} // creates the "end" iterator | |
265 | ||
266 | // iterator_facade derived classes don't seem to like implementations in | |
267 | // separate translation unit dll's, so forward to detail functions | |
268 | explicit directory_iterator(const path& p, BOOST_SCOPED_ENUM_NATIVE(directory_options) opts = directory_options::none) | |
269 | { | |
270 | detail::directory_iterator_construct(*this, p, static_cast< unsigned int >(opts), 0); | |
271 | } | |
272 | ||
273 | directory_iterator(const path& p, system::error_code& ec) BOOST_NOEXCEPT | |
274 | { | |
275 | detail::directory_iterator_construct(*this, p, static_cast< unsigned int >(directory_options::none), &ec); | |
276 | } | |
277 | ||
278 | directory_iterator(const path& p, BOOST_SCOPED_ENUM_NATIVE(directory_options) opts, system::error_code& ec) BOOST_NOEXCEPT | |
279 | { | |
280 | detail::directory_iterator_construct(*this, p, static_cast< unsigned int >(opts), &ec); | |
281 | } | |
282 | ||
283 | BOOST_DEFAULTED_FUNCTION(directory_iterator(directory_iterator const& that), : m_imp(that.m_imp) {}) | |
284 | BOOST_DEFAULTED_FUNCTION(directory_iterator& operator= (directory_iterator const& that), { m_imp = that.m_imp; return *this; }) | |
285 | ||
286 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
287 | directory_iterator(directory_iterator&& that) BOOST_NOEXCEPT : | |
288 | m_imp(std::move(that.m_imp)) | |
289 | { | |
290 | } | |
291 | ||
292 | directory_iterator& operator= (directory_iterator&& that) BOOST_NOEXCEPT | |
293 | { | |
294 | m_imp = std::move(that.m_imp); | |
295 | return *this; | |
296 | } | |
297 | #endif // !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
298 | ||
299 | directory_iterator& increment(system::error_code& ec) BOOST_NOEXCEPT | |
300 | { | |
301 | detail::directory_iterator_increment(*this, &ec); | |
302 | return *this; | |
303 | } | |
304 | ||
305 | private: | |
306 | boost::iterator_facade< | |
307 | directory_iterator, | |
308 | directory_entry, | |
309 | boost::single_pass_traversal_tag | |
310 | >::reference dereference() const | |
311 | { | |
312 | BOOST_ASSERT_MSG(!is_end(), "attempt to dereference end directory iterator"); | |
313 | return m_imp->dir_entry; | |
314 | } | |
315 | ||
316 | void increment() { detail::directory_iterator_increment(*this, 0); } | |
317 | ||
318 | bool equal(const directory_iterator& rhs) const BOOST_NOEXCEPT | |
319 | { | |
320 | return m_imp == rhs.m_imp || (is_end() && rhs.is_end()); | |
321 | } | |
322 | ||
323 | bool is_end() const BOOST_NOEXCEPT | |
324 | { | |
325 | // Note: The check for handle is needed because the iterator can be copied and the copy | |
326 | // can be incremented to end while the original iterator still refers to the same dir_itr_imp. | |
327 | return !m_imp || !m_imp->handle; | |
328 | } | |
329 | ||
330 | private: | |
331 | // intrusive_ptr provides the shallow-copy semantics required for single pass iterators | |
332 | // (i.e. InputIterators). The end iterator is indicated by is_end(). | |
333 | boost::intrusive_ptr< detail::dir_itr_imp > m_imp; | |
334 | }; | |
335 | ||
336 | // enable directory_iterator C++11 range-based for statement use --------------------// | |
337 | ||
338 | // begin() and end() are only used by a range-based for statement in the context of | |
339 | // auto - thus the top-level const is stripped - so returning const is harmless and | |
340 | // emphasizes begin() is just a pass through. | |
341 | inline const directory_iterator& begin(const directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
342 | inline directory_iterator end(const directory_iterator&) BOOST_NOEXCEPT { return directory_iterator(); } | |
343 | ||
344 | // enable C++14 generic accessors for range const iterators | |
345 | inline const directory_iterator& cbegin(const directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
346 | inline directory_iterator cend(const directory_iterator&) BOOST_NOEXCEPT { return directory_iterator(); } | |
347 | ||
348 | // enable directory_iterator BOOST_FOREACH -----------------------------------------// | |
349 | ||
350 | inline directory_iterator& range_begin(directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
351 | inline directory_iterator range_begin(const directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
352 | inline directory_iterator range_end(directory_iterator&) BOOST_NOEXCEPT { return directory_iterator(); } | |
353 | inline directory_iterator range_end(const directory_iterator&) BOOST_NOEXCEPT { return directory_iterator(); } | |
354 | ||
355 | } // namespace filesystem | |
356 | ||
357 | // namespace boost template specializations | |
358 | template<typename C, typename Enabler> | |
359 | struct range_mutable_iterator; | |
360 | ||
361 | template<> | |
362 | struct range_mutable_iterator<boost::filesystem::directory_iterator, void> | |
363 | { | |
364 | typedef boost::filesystem::directory_iterator type; | |
365 | }; | |
366 | ||
367 | template<typename C, typename Enabler> | |
368 | struct range_const_iterator; | |
369 | ||
370 | template<> | |
371 | struct range_const_iterator<boost::filesystem::directory_iterator, void> | |
372 | { | |
373 | typedef boost::filesystem::directory_iterator type; | |
374 | }; | |
375 | ||
376 | namespace filesystem { | |
377 | ||
378 | //--------------------------------------------------------------------------------------// | |
379 | // // | |
380 | // recursive_directory_iterator helpers // | |
381 | // // | |
382 | //--------------------------------------------------------------------------------------// | |
383 | ||
384 | #if !defined(BOOST_FILESYSTEM_NO_DEPRECATED) | |
385 | // Deprecated enum, use directory_options instead | |
386 | BOOST_SCOPED_ENUM_UT_DECLARE_BEGIN(symlink_option, unsigned int) | |
387 | { | |
388 | none = static_cast< unsigned int >(directory_options::none), | |
389 | no_recurse = none, // don't follow directory symlinks (default behavior) | |
390 | recurse = static_cast< unsigned int >(directory_options::follow_directory_symlink), // follow directory symlinks | |
391 | _detail_no_push = static_cast< unsigned int >(directory_options::_detail_no_push) // internal use only | |
392 | } | |
393 | BOOST_SCOPED_ENUM_DECLARE_END(symlink_option) | |
394 | ||
395 | BOOST_BITMASK(BOOST_SCOPED_ENUM_NATIVE(symlink_option)) | |
396 | #endif // BOOST_FILESYSTEM_NO_DEPRECATED | |
397 | ||
398 | class recursive_directory_iterator; | |
399 | ||
400 | namespace detail { | |
401 | ||
402 | struct recur_dir_itr_imp : | |
403 | public boost::intrusive_ref_counter< recur_dir_itr_imp > | |
404 | { | |
405 | typedef directory_iterator element_type; | |
406 | std::vector< element_type > m_stack; | |
407 | // directory_options values, declared as unsigned int for ABI compatibility | |
408 | unsigned int m_options; | |
409 | ||
410 | explicit recur_dir_itr_imp(unsigned int opts) BOOST_NOEXCEPT : m_options(opts) {} | |
411 | }; | |
412 | ||
413 | BOOST_FILESYSTEM_DECL void recursive_directory_iterator_construct(recursive_directory_iterator& it, const path& dir_path, unsigned int opts, system::error_code* ec); | |
414 | BOOST_FILESYSTEM_DECL void recursive_directory_iterator_increment(recursive_directory_iterator& it, system::error_code* ec); | |
415 | BOOST_FILESYSTEM_DECL void recursive_directory_iterator_pop(recursive_directory_iterator& it, system::error_code* ec); | |
416 | ||
417 | } // namespace detail | |
418 | ||
419 | //--------------------------------------------------------------------------------------// | |
420 | // // | |
421 | // recursive_directory_iterator // | |
422 | // // | |
423 | //--------------------------------------------------------------------------------------// | |
424 | ||
425 | class recursive_directory_iterator : | |
426 | public boost::iterator_facade< | |
427 | recursive_directory_iterator, | |
428 | directory_entry, | |
429 | boost::single_pass_traversal_tag | |
430 | > | |
431 | { | |
432 | friend class boost::iterator_core_access; | |
433 | ||
434 | friend BOOST_FILESYSTEM_DECL void detail::recursive_directory_iterator_construct(recursive_directory_iterator& it, const path& dir_path, unsigned int opts, system::error_code* ec); | |
435 | friend BOOST_FILESYSTEM_DECL void detail::recursive_directory_iterator_increment(recursive_directory_iterator& it, system::error_code* ec); | |
436 | friend BOOST_FILESYSTEM_DECL void detail::recursive_directory_iterator_pop(recursive_directory_iterator& it, system::error_code* ec); | |
437 | ||
438 | public: | |
439 | recursive_directory_iterator() BOOST_NOEXCEPT {} // creates the "end" iterator | |
440 | ||
441 | explicit recursive_directory_iterator(const path& dir_path) | |
442 | { | |
443 | detail::recursive_directory_iterator_construct(*this, dir_path, static_cast< unsigned int >(directory_options::none), 0); | |
444 | } | |
445 | ||
446 | recursive_directory_iterator(const path& dir_path, system::error_code& ec) | |
447 | { | |
448 | detail::recursive_directory_iterator_construct(*this, dir_path, static_cast< unsigned int >(directory_options::none), &ec); | |
449 | } | |
450 | ||
451 | recursive_directory_iterator(const path& dir_path, BOOST_SCOPED_ENUM_NATIVE(directory_options) opts) | |
452 | { | |
453 | detail::recursive_directory_iterator_construct(*this, dir_path, static_cast< unsigned int >(opts), 0); | |
454 | } | |
455 | ||
456 | recursive_directory_iterator(const path& dir_path, BOOST_SCOPED_ENUM_NATIVE(directory_options) opts, system::error_code& ec) | |
457 | { | |
458 | detail::recursive_directory_iterator_construct(*this, dir_path, static_cast< unsigned int >(opts), &ec); | |
459 | } | |
460 | ||
461 | #if !defined(BOOST_FILESYSTEM_NO_DEPRECATED) | |
462 | // Deprecated constructors | |
463 | recursive_directory_iterator(const path& dir_path, BOOST_SCOPED_ENUM_NATIVE(symlink_option) opts) | |
464 | { | |
465 | detail::recursive_directory_iterator_construct(*this, dir_path, static_cast< unsigned int >(opts), 0); | |
466 | } | |
467 | ||
468 | recursive_directory_iterator(const path& dir_path, BOOST_SCOPED_ENUM_NATIVE(symlink_option) opts, system::error_code& ec) BOOST_NOEXCEPT | |
469 | { | |
470 | detail::recursive_directory_iterator_construct(*this, dir_path, static_cast< unsigned int >(opts), &ec); | |
471 | } | |
472 | #endif // BOOST_FILESYSTEM_NO_DEPRECATED | |
473 | ||
474 | BOOST_DEFAULTED_FUNCTION(recursive_directory_iterator(recursive_directory_iterator const& that), : m_imp(that.m_imp) {}) | |
475 | BOOST_DEFAULTED_FUNCTION(recursive_directory_iterator& operator= (recursive_directory_iterator const& that), { m_imp = that.m_imp; return *this; }) | |
476 | ||
477 | #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
478 | recursive_directory_iterator(recursive_directory_iterator&& that) BOOST_NOEXCEPT : | |
479 | m_imp(std::move(that.m_imp)) | |
480 | { | |
481 | } | |
482 | ||
483 | recursive_directory_iterator& operator= (recursive_directory_iterator&& that) BOOST_NOEXCEPT | |
484 | { | |
485 | m_imp = std::move(that.m_imp); | |
486 | return *this; | |
487 | } | |
488 | #endif // !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) | |
489 | ||
490 | recursive_directory_iterator& increment(system::error_code& ec) BOOST_NOEXCEPT | |
491 | { | |
492 | detail::recursive_directory_iterator_increment(*this, &ec); | |
493 | return *this; | |
494 | } | |
495 | ||
496 | int depth() const BOOST_NOEXCEPT | |
497 | { | |
498 | BOOST_ASSERT_MSG(!is_end(), "depth() on end recursive_directory_iterator"); | |
499 | return static_cast< int >(m_imp->m_stack.size() - 1u); | |
500 | } | |
501 | ||
502 | bool recursion_pending() const BOOST_NOEXCEPT | |
503 | { | |
504 | BOOST_ASSERT_MSG(!is_end(), "recursion_pending() on end recursive_directory_iterator"); | |
505 | return (m_imp->m_options & static_cast< unsigned int >(directory_options::_detail_no_push)) == 0u; | |
506 | } | |
507 | ||
508 | #ifndef BOOST_FILESYSTEM_NO_DEPRECATED | |
509 | int level() const BOOST_NOEXCEPT { return depth(); } | |
510 | bool no_push_pending() const BOOST_NOEXCEPT { return !recursion_pending(); } | |
511 | bool no_push_request() const BOOST_NOEXCEPT { return !recursion_pending(); } | |
512 | #endif | |
513 | ||
514 | void pop() | |
515 | { | |
516 | detail::recursive_directory_iterator_pop(*this, 0); | |
517 | } | |
518 | ||
519 | void pop(system::error_code& ec) BOOST_NOEXCEPT | |
520 | { | |
521 | detail::recursive_directory_iterator_pop(*this, &ec); | |
522 | } | |
523 | ||
524 | void disable_recursion_pending(bool value = true) BOOST_NOEXCEPT | |
525 | { | |
526 | BOOST_ASSERT_MSG(!is_end(), "disable_recursion_pending() on end recursive_directory_iterator"); | |
527 | if (value) | |
528 | m_imp->m_options |= static_cast< unsigned int >(directory_options::_detail_no_push); | |
529 | else | |
530 | m_imp->m_options &= ~static_cast< unsigned int >(directory_options::_detail_no_push); | |
531 | } | |
532 | ||
533 | #ifndef BOOST_FILESYSTEM_NO_DEPRECATED | |
534 | void no_push(bool value = true) BOOST_NOEXCEPT { disable_recursion_pending(value); } | |
535 | #endif | |
536 | ||
537 | file_status status() const | |
538 | { | |
539 | BOOST_ASSERT_MSG(!is_end(), "status() on end recursive_directory_iterator"); | |
540 | return m_imp->m_stack.back()->status(); | |
541 | } | |
542 | ||
543 | file_status symlink_status() const | |
544 | { | |
545 | BOOST_ASSERT_MSG(!is_end(), "symlink_status() on end recursive_directory_iterator"); | |
546 | return m_imp->m_stack.back()->symlink_status(); | |
547 | } | |
548 | ||
549 | private: | |
550 | boost::iterator_facade< | |
551 | recursive_directory_iterator, | |
552 | directory_entry, | |
553 | boost::single_pass_traversal_tag | |
554 | >::reference dereference() const | |
555 | { | |
556 | BOOST_ASSERT_MSG(!is_end(), "dereference of end recursive_directory_iterator"); | |
557 | return *m_imp->m_stack.back(); | |
558 | } | |
559 | ||
560 | void increment() { detail::recursive_directory_iterator_increment(*this, 0); } | |
561 | ||
562 | bool equal(const recursive_directory_iterator& rhs) const BOOST_NOEXCEPT | |
563 | { | |
564 | return m_imp == rhs.m_imp || (is_end() && rhs.is_end()); | |
565 | } | |
566 | ||
567 | bool is_end() const BOOST_NOEXCEPT | |
568 | { | |
569 | // Note: The check for m_stack.empty() is needed because the iterator can be copied and the copy | |
570 | // can be incremented to end while the original iterator still refers to the same recur_dir_itr_imp. | |
571 | return !m_imp || m_imp->m_stack.empty(); | |
572 | } | |
573 | ||
574 | private: | |
575 | // intrusive_ptr provides the shallow-copy semantics required for single pass iterators | |
576 | // (i.e. InputIterators). The end iterator is indicated by is_end(). | |
577 | boost::intrusive_ptr< detail::recur_dir_itr_imp > m_imp; | |
578 | }; | |
579 | ||
580 | #if !defined(BOOST_FILESYSTEM_NO_DEPRECATED) | |
581 | typedef recursive_directory_iterator wrecursive_directory_iterator; | |
582 | #endif | |
583 | ||
584 | // enable recursive directory iterator C++11 range-base for statement use ----------// | |
585 | ||
586 | // begin() and end() are only used by a range-based for statement in the context of | |
587 | // auto - thus the top-level const is stripped - so returning const is harmless and | |
588 | // emphasizes begin() is just a pass through. | |
589 | inline const recursive_directory_iterator& begin(const recursive_directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
590 | inline recursive_directory_iterator end(const recursive_directory_iterator&) BOOST_NOEXCEPT { return recursive_directory_iterator(); } | |
591 | ||
592 | // enable C++14 generic accessors for range const iterators | |
593 | inline const recursive_directory_iterator& cbegin(const recursive_directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
594 | inline recursive_directory_iterator cend(const recursive_directory_iterator&) BOOST_NOEXCEPT { return recursive_directory_iterator(); } | |
595 | ||
596 | // enable recursive directory iterator BOOST_FOREACH -------------------------------// | |
597 | ||
598 | inline recursive_directory_iterator& range_begin(recursive_directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
599 | inline recursive_directory_iterator range_begin(const recursive_directory_iterator& iter) BOOST_NOEXCEPT { return iter; } | |
600 | inline recursive_directory_iterator range_end(recursive_directory_iterator&) BOOST_NOEXCEPT { return recursive_directory_iterator(); } | |
601 | inline recursive_directory_iterator range_end(const recursive_directory_iterator&) BOOST_NOEXCEPT { return recursive_directory_iterator(); } | |
602 | ||
603 | } // namespace filesystem | |
604 | ||
605 | // namespace boost template specializations | |
606 | template<> | |
607 | struct range_mutable_iterator<boost::filesystem::recursive_directory_iterator, void> | |
608 | { | |
609 | typedef boost::filesystem::recursive_directory_iterator type; | |
610 | }; | |
611 | template<> | |
612 | struct range_const_iterator<boost::filesystem::recursive_directory_iterator, void> | |
613 | { | |
614 | typedef boost::filesystem::recursive_directory_iterator type; | |
615 | }; | |
616 | ||
617 | } // namespace boost | |
618 | ||
619 | #include <boost/config/abi_suffix.hpp> // pops abi_prefix.hpp pragmas | |
620 | #endif // BOOST_FILESYSTEM3_DIRECTORY_HPP |