diff options
author | Jan Eilers <jan.eilers@arm.com> | 2020-06-23 14:16:04 +0100 |
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committer | Jan Eilers <jan.eilers@arm.com> | 2020-06-24 10:06:28 +0100 |
commit | 307fd34ba8b19a36ddfe70eb6c70e5386ed99b34 (patch) | |
tree | 1989b029eb5711c32d8b6d95ec6f778175e89419 /third-party | |
parent | a792a05ba521c426462eb050f96a98b1ad156c58 (diff) | |
download | armnn-307fd34ba8b19a36ddfe70eb6c70e5386ed99b34.tar.gz |
IVGCVSW-4487 Adds ghc::filesystem to third-party
* as replacement for boost::filesystem
* added to cmake
* added to TPIP in readme.md
Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: I0098e490e8597a9bae4781cacba8e19f8a50d1f0
Diffstat (limited to 'third-party')
-rw-r--r-- | third-party/ghc/LICENSE | 19 | ||||
-rw-r--r-- | third-party/ghc/README.md | 746 | ||||
-rw-r--r-- | third-party/ghc/filesystem.hpp | 5214 |
3 files changed, 5979 insertions, 0 deletions
diff --git a/third-party/ghc/LICENSE b/third-party/ghc/LICENSE new file mode 100644 index 0000000000..8b24faa71d --- /dev/null +++ b/third-party/ghc/LICENSE @@ -0,0 +1,19 @@ +Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com> + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/third-party/ghc/README.md b/third-party/ghc/README.md new file mode 100644 index 0000000000..00ba1ce016 --- /dev/null +++ b/third-party/ghc/README.md @@ -0,0 +1,746 @@ +![Supported Platforms](https://img.shields.io/badge/platform-macOS%20%7C%20Linux%20%7C%20Windows%20%7C%20FreeBSD-blue.svg) +![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg) +[![Build Status](https://travis-ci.org/gulrak/filesystem.svg?branch=master)](https://travis-ci.org/gulrak/filesystem) +[![Build Status](https://ci.appveyor.com/api/projects/status/t07wp3k2cddo0hpo/branch/master?svg=true)](https://ci.appveyor.com/project/gulrak/filesystem) +[![Build Status](https://api.cirrus-ci.com/github/gulrak/filesystem.svg?branch=master)](https://cirrus-ci.com/github/gulrak/filesystem) +[![Build Status](https://cloud.drone.io/api/badges/gulrak/filesystem/status.svg?ref=refs/heads/master)](https://cloud.drone.io/gulrak/filesystem) +[![Coverage Status](https://coveralls.io/repos/github/gulrak/filesystem/badge.svg?branch=master)](https://coveralls.io/github/gulrak/filesystem?branch=master) +[![Latest Release Tag](https://img.shields.io/github/tag/gulrak/filesystem.svg)](https://github.com/gulrak/filesystem/tree/v1.3.2) + +# Filesystem + +This is a header-only single-file std::filesystem compatible helper library, +based on the C++17 specs, but implemented for C++11, C++14 or C++17 (tightly following +the C++17 with very few documented exceptions). It is currently tested on +macOS 10.12/10.14, Windows 10, Ubuntu 18.04, FreeBSD 12 and Alpine ARM/ARM64 Linux +but should work on other systems too, as long as you have at least a +C++11 compatible compiler. It is of course in its own namespace `ghc::filesystem` +to not interfere with a regular `std::filesystem` should you use it in a mixed C++17 +environment. + +*It could still use some polishing, test coverage is above 90%, I didn't benchmark +much yet, but I'll try to optimize some parts and refactor others, so I'm striving +to improve it as long as it doesn't introduce additional C++17 compatibility +issues. Feedback is always welcome. Simply open an issue if you see something missing +or wrong or not behaving as expected and I'll comment.* + + +## Motivation + +I'm often in need of filesystem functionality, mostly `fs::path`, but directory +access too, and when beginning to use C++11, I used that language update +to try to reduce my third-party dependencies. I could drop most of what +I used, but still missed some stuff that I started implementing for the +fun of it. Originally I based these helpers on my own coding- and naming +conventions. When C++17 was finalized, I wanted to use that interface, +but it took a while, to push myself to convert my classes. + +The implementation is closely based on chapter 30.10 from the C++17 standard +and a draft close to that version is +[Working Draft N4687](https://github.com/cplusplus/draft/raw/master/papers/n4687.pdf). +It is from after the standardization of C++17 but it contains the latest filesystem +interface changes compared to the +[Working Draft N4659](https://github.com/cplusplus/draft/raw/master/papers/n4659.pdf). + +I want to thank the people working on improving C++, I really liked how the language +evolved with C++11 and the following standards. Keep on the good work! + +Oh, and if you ask yourself, what `ghc` is standing for, it is simply +`gulraks helper classes`, yeah, I know, not very imaginative, but I wanted a +short namespace and I use it in some of my private classes (so it has nothing +to do with Haskell). + +## Platforms + +`ghc::filesystem` is developed on macOS but tested on Windows and Linux. +It should work on any of these with a C++11-capable compiler. I currently +don't have a BSD derivate besides macOS, so the preprocessor checks will +cry out if you try to use it there, but if there is demand, I can try to +help. Also there are some checks to hopefully better work on Android, but +as I currently don't test with the Android NDK, I wouldn't call it a +supported platform yet. All in all, I don't see it replacing `std::filesystem` +where full C++17 is available, it doesn't try to be a "better" +`std::filesystem`, just a drop-in if you can't use it (with the exception +of the UTF-8 preference on Windows). + + +Unit tests are currently run with: + +* macOS 10.12: Xcode 9.2 (clang-900.0.39.2), GCC 9.2, Clang 9.0, macOS 10.13: Xcode 10.1, macOS 10.14: Xcode 11.2 +* Windows: Visual Studio 2017, Visual Studio 2015, Visual Studio 2019, MinGW GCC 6.3 (Win32), GCC 7.2 (Win64) +* Linux (Ubuntu): GCC (5.5, 6.5, 7.4, 8.3, 9.2), Clang (5.0, 6.0, 7.1, 8.0, 9.0) +* Linux (Alpine ARM/ARM64): GCC 9.2.0 +* FreeBSD: Clang 8.0 + + +## Tests + +The header comes with a set of unit-tests and uses [CMake](https://cmake.org/) +as a build tool and [Catch2](https://github.com/catchorg/Catch2) as test framework. + +All tests agains this implementation should succeed, depending on your environment +it might be that there are some warnings, e.g. if you have no rights to create +Symlinks on Windows or at least the test thinks so, but these are just informative. + +To build the tests from inside the project directory under macOS or Linux just: + +```cpp +mkdir build +cd build +cmake -DCMAKE_BUILD_TYPE=Debug .. +make +``` + +This generates `filesystem_test`, the binary that runs all tests. + +If the default compiler is a GCC 8 or newer, or Clang 7 or newer, it +additionally tries to build a version of the test binary compiled against GCCs/Clangs +`std::filesystem` implementation, named `std_filesystem_test` +as an additional test of conformance. Ideally all tests should compile and +succeed with all filesystem implementations, but in reality, there are +some differences in behavior, sometimes due to room for interpretation in +in the standard, and there might be issues in these implementations too. + + +## Usage + +### Downloads + +The latest release version is [v1.3.2](https://github.com/gulrak/filesystem/tree/v1.3.2) and +source archives can be found [here](https://github.com/gulrak/filesystem/releases/tag/v1.3.2). + +### Using it as Single-File-Header + +As `ghc::filesystem` is at first a header-only library, it should be enough to copy the header +or the `include/ghc` directory into your project folder oder point your include path to this place and +simply include the `filesystem.hpp` header (or `ghc/filesystem.hpp` if you use the subdirectory). + +Everything is in the namespace `ghc::filesystem`, so one way to use it only as +a fallback could be: + +```cpp +#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) +#if __has_include(<filesystem>) +#define GHC_USE_STD_FS +#include <filesystem> +namespace fs = std::filesystem; +#endif +#endif +#ifndef GHC_USE_STD_FS +#include <ghc/filesystem.hpp> +namespace fs = ghc::filesystem; +#endif +``` + +**Note that this code uses a two-stage preprocessor condition because Visual Studio 2015 +doesn't like the `(<...>)` syntax, even if it could cut evaluation early before.** + +**Note also, that on MSVC this detection only works starting from version 15.7 on and when setting +the `/Zc:__cplusplus` compile switch, as the compiler allways reports `199711L` +without that switch ([see](https://blogs.msdn.microsoft.com/vcblog/2018/04/09/msvc-now-correctly-reports-__cplusplus/)).** + +If you want to also use the `fstream` wrapper with `path` support as fallback, +you might use: + +```cpp +#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) +#if __has_include(<filesystem>) +#define GHC_USE_STD_FS +#include <filesystem> +namespace fs { +using namespace std::filesystem; +using ifstream = std::ifstream; +using ofstream = std::ofstream; +using fstream = std::fstream; +} +#endif +#endif +#ifndef GHC_USE_STD_FS +#include <ghc/filesystem.hpp> +namespace fs { +using namespace ghc::filesystem; +using ifstream = ghc::filesystem::ifstream; +using ofstream = ghc::filesystem::ofstream; +using fstream = ghc::filesystem::fstream; +} +#endif +``` + +Now you have e.g. `fs::ofstream out(somePath);` and it is either the wrapper or +the C++17 `std::ofstream`. + +**Be aware, as a header-only library, it is not hiding the fact, that it +uses system includes, so they "pollute" your global namespace.** + +:information_source: **Hint:** There is an additional header named `ghc/fs_std.hpp` that implements this +dynamic selection of a filesystem implementation, that you can include +instead of `ghc/filesystem.hpp` when you want std::filesystem where +available and ghc::filesystem where not. It also enables the `wchar_t` +support on `ghc::filesystem` on Windows, so the resulting implementation +in the `fs` namespace will be compatible. + + +### Using it as Forwarding-/Implementation-Header + +Alternatively, starting from v1.1.0 `ghc::filesystem` can also be used by +including one of two additional wrapper headers. These allow to include +a forwarded version in most places (`ghc/fs_fwd.hpp`) while hiding the +implementation details in a single cpp that includes `ghc/fs_impl.hpp` to +implement the needed code. That way system includes are only visible from +inside the cpp, all other places are clean. + +Be aware, that it is currently not supported to hide the implementation +into a Windows-DLL, as a DLL interface with C++ standard templates in interfaces +is a different beast. If someone is willing to give it a try, I might integrate +a PR but currently working on that myself is not a priority. + +If you use the forwarding/implementation approach, you can still use the dynamic +switching like this: + +```cpp +#if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) +#if __has_include(<filesystem>) +#define GHC_USE_STD_FS +#include <filesystem> +namespace fs { +using namespace std::filesystem; +using ifstream = std::ifstream; +using ofstream = std::ofstream; +using fstream = std::fstream; +} +#endif +#endif +#ifndef GHC_USE_STD_FS +#include <ghc/fs-fwd.hpp> +namespace fs { +using namespace ghc::filesystem; +using ifstream = ghc::filesystem::ifstream; +using ofstream = ghc::filesystem::ofstream; +using fstream = ghc::filesystem::fstream; +} +#endif +``` + +and in the implementation hiding cpp, you might use (before any include that includes `ghc/fs_fwd.hpp` +to take precedence: + +```cpp +#if !(defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) +#if __has_include(<filesystem>)) +#include <ghc/fs_impl.hpp> +#endif +#endif +``` + +:information_source: **Hint:** There are additional helper headers, named `ghc/fs_std_fwd.hpp` and +`ghc/fs_std_impl.hpp` that use this technique, so you can simply include them +if you want to dynamically select the filesystem implementation. they also +enable the `wchar_t` support on `ghc::filesystem` on Windows, so the resulting +implementation in the `fs` namespace will be compatible. + + + +### Git Submodule and CMake + +Starting from v1.1.0, it is possible to add `ghc::filesystem` +as a git submodule, add the directory to your `CMakeLists.txt` with +`add_subdirectory()` and then simply use `target_link_libraries(your-target ghc_filesystem)` +to ensure correct include path that allow `#include <ghc/filesystem.hpp>` +to work. + +The `CMakeLists.txt` offers a few options to customize its behaviour: + +* `GHC_FILESYSTEM_BUILD_TESTING` - Compile tests, default is `OFF` when used as + a submodule, else `ON`. +* `GHC_FILESYSTEM_BUILD_EXAMPLES` - Compile the examples, default is `OFF` when used as + a submodule, else `ON`. +* `GHC_FILESYSTEM_WITH_INSTALL` - Add install target to build, default is `OFF` when used as + a submodule, else `ON`. + +### Versioning + +There is a version macro `GHC_FILESYSTEM_VERSION` defined in case future changes +might make it needed to react on the version, but I don't plan to break anything. +It's the version as decimal number `(major * 10000 + minor * 100 + patch)`. + +**Note:** Starting from v1.0.2 only even patch versions will be used for releases +and odd patch version will only be used for in between commits while working on +the next version. + + +## Documentation + +There is almost no documentation in this release, as any `std::filesystem` +documentation would work, besides the few differences explained in the next +section. So you might head over to https://en.cppreference.com/w/cpp/filesystem +for a description of the components of this library. + +The only additions to the standard are documented here: + + +### `ghc::filesystem::ifstream`, `ghc::filesystem::ofstream`, `ghc::filesystem::fstream` + +These are simple wrappers around `std::ifstream`, `std::ofstream` and `std::fstream`. +They simply add an `open()` method and a constuctor with an `ghc::filesystem::path` +argument as the `fstream` variants in C++17 have them. + +### `ghc::filesystem::u8arguments` + +This is a helper class that currently checks for UTF-8 encoding on non-Windows platforms but on Windows it +fetches the command line arguments als Unicode strings from the OS with + +```cpp +::CommandLineToArgvW(::GetCommandLineW(), &argc) +``` + +and then converts them to UTF-8, and replaces `argc` and `argv`. It is a guard-like +class that reverts its changes when going out of scope. + +So basic usage is: + +```cpp +namespace fs = ghc::filesystem; + +int main(int argc, char* argv[]) +{ + fs::u8arguments u8guard(argc, argv); + if(!u8guard.valid()) { + std::cerr << "Bad encoding, needs UTF-8." << std::endl; + exit(EXIT_FAILURE); + } + + // now use argc/argv as usual, they have utf-8 enconding on windows + // ... + + return 0; +} +``` + +That way `argv` is UTF-8 encoded as long as the scope from `main` is valid. + +**Note:** On macOS, while debugging under Xcode the code currently will return +`false` as Xcode starts the application with `US-ASCII` as encoding, no matter what +encoding is actually used and even setting `LC_ALL` in the product scheme doesn't +change anything. I still need to investigate this. + + +## Differences + +As this implementation is based on existing code from my private helper +classes, it derived some constraints of it, leading to some differences +between this and the standard C++17 API. + + +### LWG Defects + +This implementation has switchable behavior for the LWG defects +[#2682](https://wg21.cmeerw.net/lwg/issue2682), +[#2935](http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2935) and +[#2937](http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2937). +The currently selected behavior is following +[#2682](https://wg21.cmeerw.net/lwg/issue2682), +[#2937](http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2937) but +not following [#2935](http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2935), +as I feel it is a bug to report no error on a `create_directory()` or `create_directories()` +where a regular file of the same name prohibits the creation of a directory and forces +the user of those functions to double-check via `fs::is_directory` if it really worked. +The more intuitive approach to directory creation of treating a file with that name as an +error is also advocated by the newer paper +[WG21 P1164R0](http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1164r0.pdf), the revison +P1161R1 was agreed upon on Kona 2019 meeting [see merge](https://github.com/cplusplus/draft/issues/2703) +and GCC by now switched to following its proposal +([GCC #86910](https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86910)). + +### Not Implemented on C++ before C++17 + +```cpp +// methods in ghc::filesystem::path: +path& operator+=(basic_string_view<value_type> x); +int compare(basic_string_view<value_type> s) const; +``` + +These are not implemented under C++11 and C++14, as there is no +`std::basic_string_view` available and I did want to keep this +implementation self-contained and not write a full C++17-upgrade for +C++11/14. Starting with v1.1.0 these are supported when compiling +ghc::filesystem under C++17. + + +### Differences in API + +```cpp +filesystem::path::string_type +filesystem::path::value_type +``` + +In Windows, an implementation should use `std::wstring` and `wchar_t` as types used +for the native representation, but as I'm a big fan of the +["UTF-8 Everywhere" philosophy](https://utf8everywhere.org/), I decided +agains it for now. If you need to call some Windows API, use the W-variant +with the `path::wstring()` member +(e.g. `GetFileAttributesW(p.wstring().c_str())`). This gives you the +Unicode variant independant of the `UNICODE` macro and makes sharing code +between Windows, Linux and macOS easier. + +Starting with v1.2.0 `ghc::filesystem` has the option to select the more +standard conforming APi with `wchar_t` and `std::wstring` on Windows by +defining `GHC_WIN_WSTRING_STRING_TYPE`. This define has no effect on other +platforms and will be set by the helping headers `ghc/fs_std.hpp` and +the pair `ghc/fs_std_fwd.hpp`/`ghc/fs_std_impl.hpp` to enhance compatibility. + + +```cpp +const path::string_type& path::native() const /*noexcept*/; +const path::value_type *path::c_str() const /*noexcept*/; +``` + +These two can not be `noexcept` with the current implementation. This due +to the fact, that internally path is working on the generic path version +only, and the getters need to do a conversion to native path format. + +```cpp +const path::string_type& path::generic_string() const; +``` + +This returns a const reference, instead of a value, because it can. This +implementation uses the generic representation for internal workings, so +it's "free" to return that. + + +### Differences in Behavior + +#### fs.path ([ref](https://en.cppreference.com/w/cpp/filesystem/path)) + +As the complete inner mechanics of this implementation `fs::path` are working +on the generic format, it is the internal representation. So creating any mixed +slash `fs::path` object under Windows (e.g. with `"C:\foo/bar"`) will lead to a +unified path with `"C:\foo\bar"` via `native()` and `"C:/foo/bar"` via +`generic_string()` API. + +Additionally this implementation follows the standards suggestion to handle +posix paths of the form `"//host/path"` and USC path on windows also as having +a root-name (e.g. `"//host"`). The GCC implementation didn't choose to do that +while testing on Ubuntu 18.04 and macOS with GCC 8.1.0 or Clang 7.0.0. This difference +will show as warnings under std::filesystem. This leads to a change in the +algorithm described in the standard for `operator/=(path& p)` where any path +`p` with `p.is_absolute()` will degrade to an assignment, while this implementation +has the exception where `*this == *this.root_name()` and `p == preferred_seperator` +a normal append will be done, to allow: + +```cpp +fs::path p1 = "//host/foo/bar/file.txt"; +fs::path p2; +for (auto p : p1) p2 /= p; +ASSERT(p1 == p2); +``` + +For all non-host-leading paths the behaviour will match the one described by +the standard. + +#### fs.op.copy ([ref](https://en.cppreference.com/w/cpp/filesystem/copy)) + +Then there is `fs::copy`. The tests in the suite fail partially with C++17 `std::filesystem` +on GCC/Clang. They complain about a copy call with `fs::copy_options::recursive` combined +with `fs::copy_options::create_symlinks` or `fs::copy_options::create_hard_links` if the +source is a directory. There is nothing in the standard that forbids this combination +and it is the only way to deep-copy a tree while only create links for the files. +There is [LWG #2682](https://wg21.cmeerw.net/lwg/issue2682) that supports this +interpretation, but the issue ignores the usefulness of the combination with recursive +and part of the justification for the proposed solution is "we did it so for almost two years". +But this makes `fs::copy` with `fs::copy_options::create_symlinks` or `fs::copy_options::create_hard_links` +just a more complicated syntax for the `fs::create_symlink` or `fs::create_hardlink` operation +and I don't want to believe, that this was the intention of the original writing. +As there is another issue related to copy, with a different take on the description. + +**Note:** With v1.1.2 I decided to integrate a behavior switch for this and make the LWG #2682 +the default. + +## Open Issues + +### General Known Issues + +There are still some methods that break the `noexcept` clause, some +are related to LWG defects, some are due to my implementation. I +work on fixing the later ones, and might in cases where there is no +way of implementing the feature without risk of an exception, break +conformance and remove the `noexcept`. + +### Windows + +#### Symbolic Links on Windows + +As symbolic links on Windows, while being supported more or less since +Windows Vista (with some strict security constraints) and fully since some earlier +build of Windows 10, when "Developer Mode" is activated, are at time of writing +(2018) rarely used, still they are supported with this implementation. + +#### Permissions + +The Windows ACL permission feature translates badly to the POSIX permission +bit mask used in the interface of C++17 filesystem. The permissions returned +in the `file_status` are therefore currently synthesized for the `user`-level +and copied to the `group`- and `other`-level. There is still some potential +for more interaction with the Windows permission system, but currently setting +or reading permissions with this implementation will most certainly not lead +to the expected behavior. + + +## Release Notes + +### [v1.3.2](https://github.com/gulrak/filesystem/releases/tag/v1.3.2) + +* Bugfix for [#58](https://github.com/gulrak/filesystem/issues/58), on MinGW the + compilation could fail with an error about an undefined `ERROR_FILE_TOO_LARGE` + constant. +* Bugfix for [#56](https://github.com/gulrak/filesystem/issues/58), `fs::lexically_relative` + didn't ignore trailing slash on the base parameter, thanks for PR + [#57](https://github.com/gulrak/filesystem/pull/57). +* Bugfix for [#55](https://github.com/gulrak/filesystem/issues/55), `fs::create_directories` + returned `true` when nothing needed to be created, because the directory already existed. +* Bugfix for [#54](https://github.com/gulrak/filesystem/issues/54), `error_code` + was not reset, if cached result was returned. +* Pull request [#53](https://github.com/gulrak/filesystem/pull/53), fix for wrong + handling of leading whitespace when reading `fs::path` from a stream. +* Pull request [#52](https://github.com/gulrak/filesystem/pull/52), an ARM Linux + target is now part of the CI infrastructure with the service of Drone CI. +* Pull request [#51](https://github.com/gulrak/filesystem/pull/51), FreeBSD is now + part of the CI infrastucture with the service of Cirrus CI. +* Pull request [#50](https://github.com/gulrak/filesystem/pull/50), adaptive cast to + `timespec` fields to avoid warnings. + +### [v1.3.0](https://github.com/gulrak/filesystem/releases/tag/v1.3.0) + +* **Important: `ghc::filesystem` is re-licensed from BSD-3-Clause to MIT license.** (see + [#47](https://github.com/gulrak/filesystem/issues/47)) +* Pull request [#46](https://github.com/gulrak/filesystem/pull/46), suppresses + unused parameter warning on Android. +* Bugfix for [#44](https://github.com/gulrak/filesystem/issues/44), fixes + for warnings from newer Xcode versions. + +### [v1.2.10](https://github.com/gulrak/filesystem/releases/tag/v1.2.10) + +* The Visual Studio 2019 compiler, GCC 9.2 and Clang 9.0 where added to the + CI configuration. +* Bugfix for [#41](https://github.com/gulrak/filesystem/issues/41), `fs::rename` + on Windows didn't replace an axisting regular file as required by the standard, + but gave an error. New tests and a fix as provided in the issue was implemented. +* Bugfix for [#39](https://github.com/gulrak/filesystem/issues/39), for the + forwarding use via `fs_fwd.hpp` or `fs_std_fwd.hpp` der was a use of + `DWORD` in the forwarding part leading to an error if `Windows.h` was not + included before the header. The tests were changed to give an error in that + case too and the useage of `DWORD` was removed. +* Bugfix for [#38](https://github.com/gulrak/filesystem/issues/38), casting the + return value of `GetProcAddress` gave a warning with `-Wcast-function-type` + on MSYS2 and MinGW GCC 9 builds. + +### [v1.2.8](https://github.com/gulrak/filesystem/releases/tag/v1.2.8) + +* Pull request [#30](https://github.com/gulrak/filesystem/pull/30), the + `CMakeLists.txt` will automatically exclude building examples and tests when + used as submodule, the configuration options now use a prefixed name to + reduce risk of conflicts. +* Pull request [#24](https://github.com/gulrak/filesystem/pull/24), install + target now creates a `ghcFilesystemConfig.cmake` in + `${CMAKE_INSTALL_LIBDIR}/cmake/ghcFilesystem` for `find_package` that + exports a target as `ghcFilesystem::ghc_filesystem`. +* Pull request [#31](https://github.com/gulrak/filesystem/pull/31), fixes + `error: redundant redeclaration of 'constexpr' static data member` deprecation + warning in C++17 mode. +* Pull request [#32](https://github.com/gulrak/filesystem/pull/32), fixes + old-style-cast warnings. +* Pull request [#34](https://github.com/gulrak/filesystem/pull/34), fixes + [TOCTOU](https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use) situation + on `fs::create_directories`, thanks for the PR! +* Feature [#35](https://github.com/gulrak/filesystem/issues/35), new CMake + option to add an install target `GHC_FILESYSTEM_WITH_INSTALL` that is + defaulted to OFF if `ghc::filesystem` is used via `add_subdirectory`. +* Bugfix for [#33](https://github.com/gulrak/filesystem/issues/33), fixes + an issue with `fs::path::lexically_normal()` that leaves a trailing separator + in case of a resulting path ending with `..` as last element. +* Bugfix for [#36](https://github.com/gulrak/filesystem/issues/36), warings + on Xcode 11.2 due to unhelpfull references in path element iteration. + +### [v1.2.6](https://github.com/gulrak/filesystem/releases/tag/v1.2.6) + +* Pull request [#23](https://github.com/gulrak/filesystem/pull/23), tests and + examples can now be disabled in CMake via seting `BUILD_TESTING` and + `BUILD_EXAMPLES` to `NO`, `OFF` or `FALSE`. +* Pull request [#25](https://github.com/gulrak/filesystem/pull/25), + missing specialization for construction from `std::string_view` when + available was added. +* Additional test case when `std::string_view` is available. +* Bugfix for [#27](https://github.com/gulrak/filesystem/issues/27), the + `fs::path::preferred_seperator` declaration was not compiling on pre + C++17 compilers and no test accessed it, to show the problem. Fixed + it to an construction C++11 compiler should accept and added a test that + is successful on all combinations tested. +* Bugfix for [#29](https://github.com/gulrak/filesystem/issues/29), stricter + warning settings where chosen and resulting warnings where fixed. + +### [v1.2.4](https://github.com/gulrak/filesystem/releases/tag/v1.2.4) + +* Enabled stronger warning switches and resulting fixed issues on GCC and MinGW +* Bugfix for #22, the `fs::copy_options` where not forwarded from `fs::copy` to + `fs::copy_file` in one of the cases. + +### [v1.2.2](https://github.com/gulrak/filesystem/releases/tag/v1.2.2) + +* Fix for ([#21](https://github.com/gulrak/filesystem/pull/21)), when compiling + on Alpine Linux with musl instead of glibc, the wrong `strerror_r` signature + was expected. The complex preprocessor define mix was dropped in favor of + the usual dispatch by overloading a unifying wrapper. + +### [v1.2.0](https://github.com/gulrak/filesystem/releases/tag/v1.2.0) + +* Added MinGW 32/64 and Visual Studio 2015 builds to the CI configuration. +* Fixed additional compilation issues on MinGW. +* Pull request ([#13](https://github.com/gulrak/filesystem/pull/13)), set + minimum required CMake version to 3.7.2 (as in Debian 8). +* Pull request ([#14](https://github.com/gulrak/filesystem/pull/14)), added + support for a make install target. +* Bugfix for ([#15](https://github.com/gulrak/filesystem/issues/15)), the + forward/impl way of using `ghc::filesystem` missed a `<vector>` include + in the windows case. +* Bugfix for ([#16](https://github.com/gulrak/filesystem/issues/16)), + VS2019 didn't like the old size dispatching in the utf8 decoder, so it + was changed to a sfinae based approach. +* New feature ([#17](https://github.com/gulrak/filesystem/issues/17)), optional + support for standard conforming `wchar_t/std::wstring` interface when + compiling on Windows with defined `GHC_WIN_WSTRING_STRING_TYPE`, this is + default when using the `ghc/fs_std*.hpp` header, to enhance compatibility. +* New feature ([#18](https://github.com/gulrak/filesystem/issues/18)), optional + filesystem exceptions/errors on unicode errors with defined + `GHC_RAISE_UNICODE_ERRORS` (instead of replacing invalid code points or + UTF-8 encoding errors with the replacement character `U+FFFD`). +* Pull request ([#20](https://github.com/gulrak/filesystem/pull/20)), fix for + file handle leak in `fs::copy_file`. +* Coverage now checked in CI (~95% line coverage). + +### [v1.1.4](https://github.com/gulrak/filesystem/releases/tag/v1.1.4) + +* Additional Bugfix for ([#12](https://github.com/gulrak/filesystem/issues/12)), + error in old unified `readdir/readdir_r` code of `fs::directory_iterator`; + as `readdir_r` is now depricated, I decided to drop it and the resulting + code is much easier, shorter and due to more refactoring faster +* Fix for crashing unit tests against MSVC C++17 std::filesystem +* Travis-CI now additionally test with Xcode 10.2 on macOS +* Some minor refactorings + +### [v1.1.2](https://github.com/gulrak/filesystem/releases/tag/v1.1.2) + +* Bugfix for ([#11](https://github.com/gulrak/filesystem/issues/11)), + `fs::path::lexically_normal()` had some issues with `".."`-sequences. +* Bugfix for ([#12](https://github.com/gulrak/filesystem/issues/12)), + `fs::recursive_directory_iterator` could run into endless loops, + the methods depth() and pop() had issues and the copy behaviour and + `input_iterator_tag` conformance was broken, added tests +* Restructured some CMake code into a macro to ease the support for + C++17 std::filesystem builds of tests and examples for interoperability + checks. +* Some fixes on Windows tests to ease interoperability test runs. +* Reduced noise on `fs::weakly_canonical()` tests against `std::fs` +* Added simple `du` example showing the `recursive_directory_iterator` + used to add the sizes of files in a directory tree. +* Added error checking in `fs::file_time_type` test helpers +* `fs::copy()` now conforms LWG #2682, disallowing the use of + `copy_option::create_symlinks' to be used on directories + +### [v1.1.0](https://github.com/gulrak/filesystem/releases/tag/v1.1.0) + +* Restructuring of the project directory. The header files are now using + `hpp` as extension to be marked as c++ and they where moved to + `include/ghc/` to be able to include by `<ghc/filesystem.hpp>` as the + former include name might have been to generic and conflict with other + files. +* Better CMake support: `ghc::filesystem` now can be used as a submodul + and added with `add_subdirectory` and will export itself as `ghc_filesystem` + target. To use it, only `target_link_libraries(your-target ghc_filesystem)` + is needed and the include directories will be set so `#include <ghc/filesystem.hpp>` + will be a valid directive. + Still you can simply only add the header file to you project and include it + from there. +* Enhancement ([#10](https://github.com/gulrak/filesystem/issues/10)), + support for separation of implementation and forwarded api: Two + additional simple includes are added, that can be used to forward + `ghc::filesystem` declarations (`fs_fwd.hpp`) and to wrap the + implementation into a single cpp (`fs_impl.hpp`) +* The `std::basic_string_view` variants of the `fs::path` api are + now supported when compiling with C++17. +* Added CI integration for Travis-CI and Appveyor. +* Fixed MinGW compilation issues. +* Added long filename support for Windows. + +### [v1.0.10](https://github.com/gulrak/filesystem/releases/tag/v1.0.10) + +* Bugfix for ([#9](https://github.com/gulrak/filesystem/issues/9)), added + missing return statement to `ghc::filesystem::path::generic_string()` +* Added checks to hopefully better compile against Android NDK. There where + no tests run yet, so feedback is needed to actually call this supported. +* `filesystem.h` was renamed `filesystem.hpp` to better reflect that it is + a c++ language header. + +### [v1.0.8](https://github.com/gulrak/filesystem/releases/tag/v1.0.8) + +* Bugfix for ([#6](https://github.com/gulrak/filesystem/issues/6)), where + `ghc::filesystem::remove()` and `ghc::filesystem::remove_all()` both are + now able to remove a single file and both will not raise an error if the + path doesn't exist. +* Merged pull request ([#7](https://github.com/gulrak/filesystem/pull/7)), + a typo leading to setting error code instead of comparing it in + `ghc::filesystem::remove()` under Windows. +* Bugfix for (([#8](https://github.com/gulrak/filesystem/issues/8)), the + Windows version of `ghc::filesystem::directory_iterator` now releases + resources when reaching `end()` like the POSIX one does. + + +### [v1.0.6](https://github.com/gulrak/filesystem/releases/tag/v1.0.6) + +* Bugfix for ([#4](https://github.com/gulrak/filesystem/issues/4)), missing error_code + propagation in `ghc::filesystem::copy()` and `ghc::filesystem::remove_all` fixed. +* Bugfix for ([#5](https://github.com/gulrak/filesystem/issues/5)), added missing std + namespace in `ghc::filesystem::recursive_directory_iterator::difference_type`. + +### [v1.0.4](https://github.com/gulrak/filesystem/releases/tag/v1.0.4) + +* Bugfix for ([#3](https://github.com/gulrak/filesystem/issues/3)), fixed missing inlines + and added test to ensure including into multiple implementation files works as expected. +* Building tests with `-Wall -Wextra -Werror` and fixed resulting issues. + +### [v1.0.2](https://github.com/gulrak/filesystem/releases/tag/v1.0.2) + +* Updated catch2 to v2.4.0. +* Refactored `fs.op.permissions` test to work with all tested `std::filesystem` + implementations (gcc, clang, msvc++). +* Added helper class `ghc::filesystem::u8arguments` as `argv` converter, to + help follow the UTF-8 path on windows. Simply instantiate it with `argc` and + `argv` and it will fetch the Unicode version of the command line and convert + it to UTF-8. The destructor reverts the change. +* Added `examples` folder with hopefully some usefull example usage. Examples are + tested (and build) with `ghc::filesystem` and C++17 `std::filesystem` when + available. +* Starting with this version, only even patch level versions will be tagged and + odd patch levels mark in-between non-stable wip states. +* Tests can now also be run against MS version of std::filesystem for comparison. +* Added missing `fstream` include. +* Removed non-conforming C99 `timespec`/`timeval` usage. +* Fixed some integer type mismatches that could lead to warnings. +* Fixed `chrono` conversion issues in test and example on clang 7.0.0. + +### [v1.0.1](https://github.com/gulrak/filesystem/releases/tag/v1.0.1) + +* Bugfix: `ghc::filesystem::canonical` now sees empty path as non-existant and reports + an error. Due to this `ghc::filesystem::weakly_canonical` now returns relative + paths for non-existant argument paths. ([#1](https://github.com/gulrak/filesystem/issues/1)) +* Bugfix: `ghc::filesystem::remove_all` now also counts directories removed ([#2](https://github.com/gulrak/filesystem/issues/2)) +* Bugfix: `recursive_directory_iterator` tests didn't respect equality domain issues + and dereferencable constraints, leading to fails on `std::filesystem` tests. +* Bugfix: Some `noexcept` tagged methods and functions could indirectly throw exceptions + due to UFT-8 decoding issues. +* `std_filesystem_test` is now also generated if LLVM/clang 7.0.0 is found. + + +### [v1.0.0](https://github.com/gulrak/filesystem/releases/tag/v1.0.0) + +This was the first public release version. It implements the full range of +C++17 std::filesystem, as far as possible without other C++17 dependencies. + diff --git a/third-party/ghc/filesystem.hpp b/third-party/ghc/filesystem.hpp new file mode 100644 index 0000000000..1f0fe39209 --- /dev/null +++ b/third-party/ghc/filesystem.hpp @@ -0,0 +1,5214 @@ +//--------------------------------------------------------------------------------------- +// +// ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14/C++17 +// +//--------------------------------------------------------------------------------------- +// +// Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com> +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in all +// copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +// SOFTWARE. +// +//--------------------------------------------------------------------------------------- +// +// To dynamically select std::filesystem where available, you could use: +// +// #if defined(__cplusplus) && __cplusplus >= 201703L && defined(__has_include) && __has_include(<filesystem>) +// #include <filesystem> +// namespace fs = std::filesystem; +// #else +// #include <ghc/filesystem.hpp> +// namespace fs = ghc::filesystem; +// #endif +// +//--------------------------------------------------------------------------------------- +#ifndef GHC_FILESYSTEM_H +#define GHC_FILESYSTEM_H + +// #define BSD manifest constant only in +// sys/param.h +#ifndef _WIN32 +#include <sys/param.h> +#endif + +#ifndef GHC_OS_DETECTED +#if defined(__APPLE__) && defined(__MACH__) +#define GHC_OS_MACOS +#elif defined(__linux__) +#define GHC_OS_LINUX +#if defined(__ANDROID__) +#define GHC_OS_ANDROID +#endif +#elif defined(_WIN64) +#define GHC_OS_WINDOWS +#define GHC_OS_WIN64 +#elif defined(_WIN32) +#define GHC_OS_WINDOWS +#define GHC_OS_WIN32 +#elif defined(__svr4__) +#define GHC_OS_SYS5R4 +#elif defined(BSD) +#define GHC_OS_BSD +#else +#error "Operating system currently not supported!" +#endif +#define GHC_OS_DETECTED +#endif + +#if defined(GHC_FILESYSTEM_IMPLEMENTATION) +#define GHC_EXPAND_IMPL +#define GHC_INLINE +#ifdef GHC_OS_WINDOWS +#define GHC_FS_API +#define GHC_FS_API_CLASS +#else +#define GHC_FS_API __attribute__((visibility("default"))) +#define GHC_FS_API_CLASS __attribute__((visibility("default"))) +#endif +#elif defined(GHC_FILESYSTEM_FWD) +#define GHC_INLINE +#ifdef GHC_OS_WINDOWS +#define GHC_FS_API extern +#define GHC_FS_API_CLASS +#else +#define GHC_FS_API extern +#define GHC_FS_API_CLASS +#endif +#else +#define GHC_EXPAND_IMPL +#define GHC_INLINE inline +#define GHC_FS_API +#define GHC_FS_API_CLASS +#endif + +#ifdef GHC_EXPAND_IMPL + +#ifdef GHC_OS_WINDOWS +#include <windows.h> +// additional includes +#include <shellapi.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <wchar.h> +#include <winioctl.h> +#else +#include <dirent.h> +#include <fcntl.h> +#include <langinfo.h> +#include <sys/param.h> +#include <sys/stat.h> +#include <sys/statvfs.h> +#include <sys/time.h> +#include <sys/types.h> +#include <unistd.h> +#include <limits.h> +#ifdef GHC_OS_ANDROID +#include <android/api-level.h> +#endif +#endif +#ifdef GHC_OS_MACOS +#include <Availability.h> +#endif + +#include <algorithm> +#include <cctype> +#include <chrono> +#include <clocale> +#include <cstdlib> +#include <cstring> +#include <fstream> +#include <functional> +#include <memory> +#include <stack> +#include <stdexcept> +#include <string> +#include <system_error> +#include <type_traits> +#include <utility> +#include <vector> + +#else // GHC_EXPAND_IMPL +#include <chrono> +#include <fstream> +#include <memory> +#include <stack> +#include <stdexcept> +#include <string> +#include <system_error> +#ifdef GHC_OS_WINDOWS +#include <vector> +#endif +#endif // GHC_EXPAND_IMPL + +//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +// Behaviour Switches (see README.md, should match the config in test/filesystem_test.cpp): +//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +// LWG #2682 disables the since then invalid use of the copy option create_symlinks on directories +// configure LWG conformance () +#define LWG_2682_BEHAVIOUR +//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +// LWG #2395 makes crate_directory/create_directories not emit an error if there is a regular +// file with that name, it is superceded by P1164R1, so only activate if really needed +// #define LWG_2935_BEHAVIOUR +//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +// LWG #2937 enforces that fs::equivalent emits an error, if !fs::exists(p1)||!exists(p2) +#define LWG_2937_BEHAVIOUR +//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +// UTF8-Everywhere is the original behaviour of ghc::filesystem. With this define you can +// enable the more standard conforming implementation option that uses wstring on Windows +// as ghc::filesystem::string_type. +// #define GHC_WIN_WSTRING_STRING_TYPE +//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +// Raise errors/exceptions when invalid unicode codepoints or UTF-8 sequences are found, +// instead of replacing them with the unicode replacement character (U+FFFD). +// #define GHC_RAISE_UNICODE_ERRORS +//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + +// ghc::filesystem version in decimal (major * 10000 + minor * 100 + patch) +#define GHC_FILESYSTEM_VERSION 10302L + +namespace ghc { +namespace filesystem { + +// temporary existing exception type for yet unimplemented parts +class GHC_FS_API_CLASS not_implemented_exception : public std::logic_error +{ +public: + not_implemented_exception() + : std::logic_error("function not implemented yet.") + { + } +}; + +template<typename char_type> +class path_helper_base +{ +public: + using value_type = char_type; +#ifdef GHC_OS_WINDOWS + static constexpr value_type preferred_separator = '\\'; +#else + static constexpr value_type preferred_separator = '/'; +#endif +}; + +#if __cplusplus < 201703L +template <typename char_type> +constexpr char_type path_helper_base<char_type>::preferred_separator; +#endif + +// 30.10.8 class path +class GHC_FS_API_CLASS path +#if defined(GHC_OS_WINDOWS) && defined(GHC_WIN_WSTRING_STRING_TYPE) +#define GHC_USE_WCHAR_T + : private path_helper_base<std::wstring::value_type> +{ +public: + using path_helper_base<std::wstring::value_type>::value_type; +#else + : private path_helper_base<std::string::value_type> +{ +public: + using path_helper_base<std::string::value_type>::value_type; +#endif + using string_type = std::basic_string<value_type>; + using path_helper_base<value_type>::preferred_separator; + + // 30.10.10.1 enumeration format + /// The path format in wich the constructor argument is given. + enum format { + generic_format, ///< The generic format, internally used by + ///< ghc::filesystem::path with slashes + native_format, ///< The format native to the current platform this code + ///< is build for + auto_format, ///< Try to auto-detect the format, fallback to native + }; + + template <class T> + struct _is_basic_string : std::false_type + { + }; + template <class CharT, class Traits, class Alloc> + struct _is_basic_string<std::basic_string<CharT, Traits, Alloc>> : std::true_type + { + }; +#ifdef __cpp_lib_string_view + template <class CharT> + struct _is_basic_string<std::basic_string_view<CharT>> : std::true_type + { + }; +#endif + + template <typename T1, typename T2 = void> + using path_type = typename std::enable_if<!std::is_same<path, T1>::value, path>::type; +#ifdef GHC_USE_WCHAR_T + template <typename T> + using path_from_string = typename std::enable_if<_is_basic_string<T>::value || std::is_same<char const*, typename std::decay<T>::type>::value || std::is_same<char*, typename std::decay<T>::type>::value || + std::is_same<wchar_t const*, typename std::decay<T>::type>::value || std::is_same<wchar_t*, typename std::decay<T>::type>::value, + path>::type; + template <typename T> + using path_type_EcharT = typename std::enable_if<std::is_same<T, char>::value || std::is_same<T, char16_t>::value || std::is_same<T, char32_t>::value, path>::type; +#else + template <typename T> + using path_from_string = typename std::enable_if<_is_basic_string<T>::value || std::is_same<char const*, typename std::decay<T>::type>::value || std::is_same<char*, typename std::decay<T>::type>::value, path>::type; + template <typename T> + using path_type_EcharT = typename std::enable_if<std::is_same<T, char>::value || std::is_same<T, char16_t>::value || std::is_same<T, char32_t>::value || std::is_same<T, wchar_t>::value, path>::type; +#endif + // 30.10.8.4.1 constructors and destructor + path() noexcept; + path(const path& p); + path(path&& p) noexcept; + path(string_type&& source, format fmt = auto_format); + template <class Source, typename = path_from_string<Source>> + path(const Source& source, format fmt = auto_format); + template <class InputIterator> + path(InputIterator first, InputIterator last, format fmt = auto_format); + template <class Source, typename = path_from_string<Source>> + path(const Source& source, const std::locale& loc, format fmt = auto_format); + template <class InputIterator> + path(InputIterator first, InputIterator last, const std::locale& loc, format fmt = auto_format); + ~path(); + + // 30.10.8.4.2 assignments + path& operator=(const path& p); + path& operator=(path&& p) noexcept; + path& operator=(string_type&& source); + path& assign(string_type&& source); + template <class Source> + path& operator=(const Source& source); + template <class Source> + path& assign(const Source& source); + template <class InputIterator> + path& assign(InputIterator first, InputIterator last); + + // 30.10.8.4.3 appends + path& operator/=(const path& p); + template <class Source> + path& operator/=(const Source& source); + template <class Source> + path& append(const Source& source); + template <class InputIterator> + path& append(InputIterator first, InputIterator last); + + // 30.10.8.4.4 concatenation + path& operator+=(const path& x); + path& operator+=(const string_type& x); +#ifdef __cpp_lib_string_view + path& operator+=(std::basic_string_view<value_type> x); +#endif + path& operator+=(const value_type* x); + path& operator+=(value_type x); + template <class Source> + path_from_string<Source>& operator+=(const Source& x); + template <class EcharT> + path_type_EcharT<EcharT>& operator+=(EcharT x); + template <class Source> + path& concat(const Source& x); + template <class InputIterator> + path& concat(InputIterator first, InputIterator last); + + // 30.10.8.4.5 modifiers + void clear() noexcept; + path& make_preferred(); + path& remove_filename(); + path& replace_filename(const path& replacement); + path& replace_extension(const path& replacement = path()); + void swap(path& rhs) noexcept; + + // 30.10.8.4.6 native format observers + const string_type& native() const; // this implementation doesn't support noexcept for native() + const value_type* c_str() const; // this implementation doesn't support noexcept for c_str() + operator string_type() const; + template <class EcharT, class traits = std::char_traits<EcharT>, class Allocator = std::allocator<EcharT>> + std::basic_string<EcharT, traits, Allocator> string(const Allocator& a = Allocator()) const; + std::string string() const; + std::wstring wstring() const; + std::string u8string() const; + std::u16string u16string() const; + std::u32string u32string() const; + + // 30.10.8.4.7 generic format observers + template <class EcharT, class traits = std::char_traits<EcharT>, class Allocator = std::allocator<EcharT>> + std::basic_string<EcharT, traits, Allocator> generic_string(const Allocator& a = Allocator()) const; + const std::string& generic_string() const; // this is different from the standard, that returns by value + std::wstring generic_wstring() const; + std::string generic_u8string() const; + std::u16string generic_u16string() const; + std::u32string generic_u32string() const; + + // 30.10.8.4.8 compare + int compare(const path& p) const noexcept; + int compare(const string_type& s) const; +#ifdef __cpp_lib_string_view + int compare(std::basic_string_view<value_type> s) const; +#endif + int compare(const value_type* s) const; + + // 30.10.8.4.9 decomposition + path root_name() const; + path root_directory() const; + path root_path() const; + path relative_path() const; + path parent_path() const; + path filename() const; + path stem() const; + path extension() const; + + // 30.10.8.4.10 query + bool empty() const noexcept; + bool has_root_name() const; + bool has_root_directory() const; + bool has_root_path() const; + bool has_relative_path() const; + bool has_parent_path() const; + bool has_filename() const; + bool has_stem() const; + bool has_extension() const; + bool is_absolute() const; + bool is_relative() const; + + // 30.10.8.4.11 generation + path lexically_normal() const; + path lexically_relative(const path& base) const; + path lexically_proximate(const path& base) const; + + // 30.10.8.5 iterators + class iterator; + using const_iterator = iterator; + iterator begin() const; + iterator end() const; + +private: + using impl_value_type = std::string::value_type; + using impl_string_type = std::basic_string<impl_value_type>; + friend class directory_iterator; + void append_name(const char* name); + static constexpr impl_value_type generic_separator = '/'; + template <typename InputIterator> + class input_iterator_range + { + public: + typedef InputIterator iterator; + typedef InputIterator const_iterator; + typedef typename InputIterator::difference_type difference_type; + + input_iterator_range(const InputIterator& first, const InputIterator& last) + : _first(first) + , _last(last) + { + } + + InputIterator begin() const { return _first; } + InputIterator end() const { return _last; } + + private: + InputIterator _first; + InputIterator _last; + }; + friend void swap(path& lhs, path& rhs) noexcept; + friend size_t hash_value(const path& p) noexcept; + static void postprocess_path_with_format(impl_string_type& p, format fmt); + impl_string_type _path; +#ifdef GHC_OS_WINDOWS + impl_string_type native_impl() const; + mutable string_type _native_cache; +#else + const impl_string_type& native_impl() const; +#endif +}; + +// 30.10.8.6 path non-member functions +GHC_FS_API void swap(path& lhs, path& rhs) noexcept; +GHC_FS_API size_t hash_value(const path& p) noexcept; +GHC_FS_API bool operator==(const path& lhs, const path& rhs) noexcept; +GHC_FS_API bool operator!=(const path& lhs, const path& rhs) noexcept; +GHC_FS_API bool operator<(const path& lhs, const path& rhs) noexcept; +GHC_FS_API bool operator<=(const path& lhs, const path& rhs) noexcept; +GHC_FS_API bool operator>(const path& lhs, const path& rhs) noexcept; +GHC_FS_API bool operator>=(const path& lhs, const path& rhs) noexcept; + +GHC_FS_API path operator/(const path& lhs, const path& rhs); + +// 30.10.8.6.1 path inserter and extractor +template <class charT, class traits> +std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& os, const path& p); +template <class charT, class traits> +std::basic_istream<charT, traits>& operator>>(std::basic_istream<charT, traits>& is, path& p); + +// 30.10.8.6.2 path factory functions +template <class Source, typename = path::path_from_string<Source>> +path u8path(const Source& source); +template <class InputIterator> +path u8path(InputIterator first, InputIterator last); + +// 30.10.9 class filesystem_error +class GHC_FS_API_CLASS filesystem_error : public std::system_error +{ +public: + filesystem_error(const std::string& what_arg, std::error_code ec); + filesystem_error(const std::string& what_arg, const path& p1, std::error_code ec); + filesystem_error(const std::string& what_arg, const path& p1, const path& p2, std::error_code ec); + const path& path1() const noexcept; + const path& path2() const noexcept; + const char* what() const noexcept override; + +private: + std::string _what_arg; + std::error_code _ec; + path _p1, _p2; +}; + +class GHC_FS_API_CLASS path::iterator +{ +public: + using value_type = const path; + using difference_type = std::ptrdiff_t; + using pointer = const path*; + using reference = const path&; + using iterator_category = std::bidirectional_iterator_tag; + + iterator(); + iterator(const impl_string_type::const_iterator& first, const impl_string_type::const_iterator& last, const impl_string_type::const_iterator& pos); + iterator& operator++(); + iterator operator++(int); + iterator& operator--(); + iterator operator--(int); + bool operator==(const iterator& other) const; + bool operator!=(const iterator& other) const; + reference operator*() const; + pointer operator->() const; + +private: + impl_string_type::const_iterator increment(const std::string::const_iterator& pos) const; + impl_string_type::const_iterator decrement(const std::string::const_iterator& pos) const; + void updateCurrent(); + impl_string_type::const_iterator _first; + impl_string_type::const_iterator _last; + impl_string_type::const_iterator _root; + impl_string_type::const_iterator _iter; + path _current; +}; + +struct space_info +{ + uintmax_t capacity; + uintmax_t free; + uintmax_t available; +}; + +// 30.10.10, enumerations +enum class file_type { + none, + not_found, + regular, + directory, + symlink, + block, + character, + fifo, + socket, + unknown, +}; + +enum class perms : uint16_t { + none = 0, + + owner_read = 0400, + owner_write = 0200, + owner_exec = 0100, + owner_all = 0700, + + group_read = 040, + group_write = 020, + group_exec = 010, + group_all = 070, + + others_read = 04, + others_write = 02, + others_exec = 01, + others_all = 07, + + all = 0777, + set_uid = 04000, + set_gid = 02000, + sticky_bit = 01000, + + mask = 07777, + unknown = 0xffff +}; + +enum class perm_options : uint16_t { + replace = 3, + add = 1, + remove = 2, + nofollow = 4, +}; + +enum class copy_options : uint16_t { + none = 0, + + skip_existing = 1, + overwrite_existing = 2, + update_existing = 4, + + recursive = 8, + + copy_symlinks = 0x10, + skip_symlinks = 0x20, + + directories_only = 0x40, + create_symlinks = 0x80, + create_hard_links = 0x100 +}; + +enum class directory_options : uint16_t { + none = 0, + follow_directory_symlink = 1, + skip_permission_denied = 2, +}; + +// 30.10.11 class file_status +class GHC_FS_API_CLASS file_status +{ +public: + // 30.10.11.1 constructors and destructor + file_status() noexcept; + explicit file_status(file_type ft, perms prms = perms::unknown) noexcept; + file_status(const file_status&) noexcept; + file_status(file_status&&) noexcept; + ~file_status(); + // assignments: + file_status& operator=(const file_status&) noexcept; + file_status& operator=(file_status&&) noexcept; + // 30.10.11.3 modifiers + void type(file_type ft) noexcept; + void permissions(perms prms) noexcept; + // 30.10.11.2 observers + file_type type() const noexcept; + perms permissions() const noexcept; + +private: + file_type _type; + perms _perms; +}; + +using file_time_type = std::chrono::time_point<std::chrono::system_clock>; + +// 30.10.12 Class directory_entry +class GHC_FS_API_CLASS directory_entry +{ +public: + // 30.10.12.1 constructors and destructor + directory_entry() noexcept = default; + directory_entry(const directory_entry&) = default; + directory_entry(directory_entry&&) noexcept = default; + explicit directory_entry(const path& p); + directory_entry(const path& p, std::error_code& ec); + ~directory_entry(); + + // assignments: + directory_entry& operator=(const directory_entry&) = default; + directory_entry& operator=(directory_entry&&) noexcept = default; + + // 30.10.12.2 modifiers + void assign(const path& p); + void assign(const path& p, std::error_code& ec); + void replace_filename(const path& p); + void replace_filename(const path& p, std::error_code& ec); + void refresh(); + void refresh(std::error_code& ec) noexcept; + + // 30.10.12.3 observers + const filesystem::path& path() const noexcept; + operator const filesystem::path&() const noexcept; + bool exists() const; + bool exists(std::error_code& ec) const noexcept; + bool is_block_file() const; + bool is_block_file(std::error_code& ec) const noexcept; + bool is_character_file() const; + bool is_character_file(std::error_code& ec) const noexcept; + bool is_directory() const; + bool is_directory(std::error_code& ec) const noexcept; + bool is_fifo() const; + bool is_fifo(std::error_code& ec) const noexcept; + bool is_other() const; + bool is_other(std::error_code& ec) const noexcept; + bool is_regular_file() const; + bool is_regular_file(std::error_code& ec) const noexcept; + bool is_socket() const; + bool is_socket(std::error_code& ec) const noexcept; + bool is_symlink() const; + bool is_symlink(std::error_code& ec) const noexcept; + uintmax_t file_size() const; + uintmax_t file_size(std::error_code& ec) const noexcept; + uintmax_t hard_link_count() const; + uintmax_t hard_link_count(std::error_code& ec) const noexcept; + file_time_type last_write_time() const; + file_time_type last_write_time(std::error_code& ec) const noexcept; + + file_status status() const; + file_status status(std::error_code& ec) const noexcept; + + file_status symlink_status() const; + file_status symlink_status(std::error_code& ec) const noexcept; + bool operator<(const directory_entry& rhs) const noexcept; + bool operator==(const directory_entry& rhs) const noexcept; + bool operator!=(const directory_entry& rhs) const noexcept; + bool operator<=(const directory_entry& rhs) const noexcept; + bool operator>(const directory_entry& rhs) const noexcept; + bool operator>=(const directory_entry& rhs) const noexcept; + +private: + friend class directory_iterator; + filesystem::path _path; + file_status _status; + file_status _symlink_status; + uintmax_t _file_size = 0; +#ifndef GHC_OS_WINDOWS + uintmax_t _hard_link_count = 0; +#endif + time_t _last_write_time = 0; +}; + +// 30.10.13 Class directory_iterator +class GHC_FS_API_CLASS directory_iterator +{ +public: + class GHC_FS_API_CLASS proxy + { + public: + const directory_entry& operator*() const& noexcept { return _dir_entry; } + directory_entry operator*() && noexcept { return std::move(_dir_entry); } + + private: + explicit proxy(const directory_entry& dir_entry) + : _dir_entry(dir_entry) + { + } + friend class directory_iterator; + friend class recursive_directory_iterator; + directory_entry _dir_entry; + }; + using iterator_category = std::input_iterator_tag; + using value_type = directory_entry; + using difference_type = std::ptrdiff_t; + using pointer = const directory_entry*; + using reference = const directory_entry&; + + // 30.10.13.1 member functions + directory_iterator() noexcept; + explicit directory_iterator(const path& p); + directory_iterator(const path& p, directory_options options); + directory_iterator(const path& p, std::error_code& ec) noexcept; + directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept; + directory_iterator(const directory_iterator& rhs); + directory_iterator(directory_iterator&& rhs) noexcept; + ~directory_iterator(); + directory_iterator& operator=(const directory_iterator& rhs); + directory_iterator& operator=(directory_iterator&& rhs) noexcept; + const directory_entry& operator*() const; + const directory_entry* operator->() const; + directory_iterator& operator++(); + directory_iterator& increment(std::error_code& ec) noexcept; + + // other members as required by 27.2.3, input iterators + proxy operator++(int) + { + proxy p{**this}; + ++*this; + return p; + } + bool operator==(const directory_iterator& rhs) const; + bool operator!=(const directory_iterator& rhs) const; + +private: + friend class recursive_directory_iterator; + class impl; + std::shared_ptr<impl> _impl; +}; + +// 30.10.13.2 directory_iterator non-member functions +GHC_FS_API directory_iterator begin(directory_iterator iter) noexcept; +GHC_FS_API directory_iterator end(const directory_iterator&) noexcept; + +// 30.10.14 class recursive_directory_iterator +class GHC_FS_API_CLASS recursive_directory_iterator +{ +public: + using iterator_category = std::input_iterator_tag; + using value_type = directory_entry; + using difference_type = std::ptrdiff_t; + using pointer = const directory_entry*; + using reference = const directory_entry&; + + // 30.10.14.1 constructors and destructor + recursive_directory_iterator() noexcept; + explicit recursive_directory_iterator(const path& p); + recursive_directory_iterator(const path& p, directory_options options); + recursive_directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept; + recursive_directory_iterator(const path& p, std::error_code& ec) noexcept; + recursive_directory_iterator(const recursive_directory_iterator& rhs); + recursive_directory_iterator(recursive_directory_iterator&& rhs) noexcept; + ~recursive_directory_iterator(); + + // 30.10.14.1 observers + directory_options options() const; + int depth() const; + bool recursion_pending() const; + + const directory_entry& operator*() const; + const directory_entry* operator->() const; + + // 30.10.14.1 modifiers recursive_directory_iterator& + recursive_directory_iterator& operator=(const recursive_directory_iterator& rhs); + recursive_directory_iterator& operator=(recursive_directory_iterator&& rhs) noexcept; + recursive_directory_iterator& operator++(); + recursive_directory_iterator& increment(std::error_code& ec) noexcept; + + void pop(); + void pop(std::error_code& ec); + void disable_recursion_pending(); + + // other members as required by 27.2.3, input iterators + directory_iterator::proxy operator++(int) + { + directory_iterator::proxy proxy{**this}; + ++*this; + return proxy; + } + bool operator==(const recursive_directory_iterator& rhs) const; + bool operator!=(const recursive_directory_iterator& rhs) const; + +private: + struct recursive_directory_iterator_impl + { + directory_options _options; + bool _recursion_pending; + std::stack<directory_iterator> _dir_iter_stack; + recursive_directory_iterator_impl(directory_options options, bool recursion_pending) + : _options(options) + , _recursion_pending(recursion_pending) + { + } + }; + std::shared_ptr<recursive_directory_iterator_impl> _impl; +}; + +// 30.10.14.2 directory_iterator non-member functions +GHC_FS_API recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept; +GHC_FS_API recursive_directory_iterator end(const recursive_directory_iterator&) noexcept; + +// 30.10.15 filesystem operations +GHC_FS_API path absolute(const path& p); +GHC_FS_API path absolute(const path& p, std::error_code& ec); + +GHC_FS_API path canonical(const path& p); +GHC_FS_API path canonical(const path& p, std::error_code& ec); + +GHC_FS_API void copy(const path& from, const path& to); +GHC_FS_API void copy(const path& from, const path& to, std::error_code& ec) noexcept; +GHC_FS_API void copy(const path& from, const path& to, copy_options options); +GHC_FS_API void copy(const path& from, const path& to, copy_options options, std::error_code& ec) noexcept; + +GHC_FS_API bool copy_file(const path& from, const path& to); +GHC_FS_API bool copy_file(const path& from, const path& to, std::error_code& ec) noexcept; +GHC_FS_API bool copy_file(const path& from, const path& to, copy_options option); +GHC_FS_API bool copy_file(const path& from, const path& to, copy_options option, std::error_code& ec) noexcept; + +GHC_FS_API void copy_symlink(const path& existing_symlink, const path& new_symlink); +GHC_FS_API void copy_symlink(const path& existing_symlink, const path& new_symlink, std::error_code& ec) noexcept; + +GHC_FS_API bool create_directories(const path& p); +GHC_FS_API bool create_directories(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API bool create_directory(const path& p); +GHC_FS_API bool create_directory(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API bool create_directory(const path& p, const path& attributes); +GHC_FS_API bool create_directory(const path& p, const path& attributes, std::error_code& ec) noexcept; + +GHC_FS_API void create_directory_symlink(const path& to, const path& new_symlink); +GHC_FS_API void create_directory_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept; + +GHC_FS_API void create_hard_link(const path& to, const path& new_hard_link); +GHC_FS_API void create_hard_link(const path& to, const path& new_hard_link, std::error_code& ec) noexcept; + +GHC_FS_API void create_symlink(const path& to, const path& new_symlink); +GHC_FS_API void create_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept; + +GHC_FS_API path current_path(); +GHC_FS_API path current_path(std::error_code& ec); +GHC_FS_API void current_path(const path& p); +GHC_FS_API void current_path(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API bool exists(file_status s) noexcept; +GHC_FS_API bool exists(const path& p); +GHC_FS_API bool exists(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API bool equivalent(const path& p1, const path& p2); +GHC_FS_API bool equivalent(const path& p1, const path& p2, std::error_code& ec) noexcept; + +GHC_FS_API uintmax_t file_size(const path& p); +GHC_FS_API uintmax_t file_size(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API uintmax_t hard_link_count(const path& p); +GHC_FS_API uintmax_t hard_link_count(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API bool is_block_file(file_status s) noexcept; +GHC_FS_API bool is_block_file(const path& p); +GHC_FS_API bool is_block_file(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_character_file(file_status s) noexcept; +GHC_FS_API bool is_character_file(const path& p); +GHC_FS_API bool is_character_file(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_directory(file_status s) noexcept; +GHC_FS_API bool is_directory(const path& p); +GHC_FS_API bool is_directory(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_empty(const path& p); +GHC_FS_API bool is_empty(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_fifo(file_status s) noexcept; +GHC_FS_API bool is_fifo(const path& p); +GHC_FS_API bool is_fifo(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_other(file_status s) noexcept; +GHC_FS_API bool is_other(const path& p); +GHC_FS_API bool is_other(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_regular_file(file_status s) noexcept; +GHC_FS_API bool is_regular_file(const path& p); +GHC_FS_API bool is_regular_file(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_socket(file_status s) noexcept; +GHC_FS_API bool is_socket(const path& p); +GHC_FS_API bool is_socket(const path& p, std::error_code& ec) noexcept; +GHC_FS_API bool is_symlink(file_status s) noexcept; +GHC_FS_API bool is_symlink(const path& p); +GHC_FS_API bool is_symlink(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API file_time_type last_write_time(const path& p); +GHC_FS_API file_time_type last_write_time(const path& p, std::error_code& ec) noexcept; +GHC_FS_API void last_write_time(const path& p, file_time_type new_time); +GHC_FS_API void last_write_time(const path& p, file_time_type new_time, std::error_code& ec) noexcept; + +GHC_FS_API void permissions(const path& p, perms prms, perm_options opts = perm_options::replace); +GHC_FS_API void permissions(const path& p, perms prms, std::error_code& ec) noexcept; +GHC_FS_API void permissions(const path& p, perms prms, perm_options opts, std::error_code& ec); + +GHC_FS_API path proximate(const path& p, std::error_code& ec); +GHC_FS_API path proximate(const path& p, const path& base = current_path()); +GHC_FS_API path proximate(const path& p, const path& base, std::error_code& ec); + +GHC_FS_API path read_symlink(const path& p); +GHC_FS_API path read_symlink(const path& p, std::error_code& ec); + +GHC_FS_API path relative(const path& p, std::error_code& ec); +GHC_FS_API path relative(const path& p, const path& base = current_path()); +GHC_FS_API path relative(const path& p, const path& base, std::error_code& ec); + +GHC_FS_API bool remove(const path& p); +GHC_FS_API bool remove(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API uintmax_t remove_all(const path& p); +GHC_FS_API uintmax_t remove_all(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API void rename(const path& from, const path& to); +GHC_FS_API void rename(const path& from, const path& to, std::error_code& ec) noexcept; + +GHC_FS_API void resize_file(const path& p, uintmax_t size); +GHC_FS_API void resize_file(const path& p, uintmax_t size, std::error_code& ec) noexcept; + +GHC_FS_API space_info space(const path& p); +GHC_FS_API space_info space(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API file_status status(const path& p); +GHC_FS_API file_status status(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API bool status_known(file_status s) noexcept; + +GHC_FS_API file_status symlink_status(const path& p); +GHC_FS_API file_status symlink_status(const path& p, std::error_code& ec) noexcept; + +GHC_FS_API path temp_directory_path(); +GHC_FS_API path temp_directory_path(std::error_code& ec) noexcept; + +GHC_FS_API path weakly_canonical(const path& p); +GHC_FS_API path weakly_canonical(const path& p, std::error_code& ec) noexcept; + +// Non-C++17 add-on std::fstream wrappers with path +template <class charT, class traits = std::char_traits<charT>> +class basic_filebuf : public std::basic_filebuf<charT, traits> +{ +public: + basic_filebuf() {} + ~basic_filebuf() override {} + basic_filebuf(const basic_filebuf&) = delete; + const basic_filebuf& operator=(const basic_filebuf&) = delete; + basic_filebuf<charT, traits>* open(const path& p, std::ios_base::openmode mode) + { +#if defined(GHC_OS_WINDOWS) && !defined(__GNUC__) + return std::basic_filebuf<charT, traits>::open(p.wstring().c_str(), mode) ? this : 0; +#else + return std::basic_filebuf<charT, traits>::open(p.string().c_str(), mode) ? this : 0; +#endif + } +}; + +template <class charT, class traits = std::char_traits<charT>> +class basic_ifstream : public std::basic_ifstream<charT, traits> +{ +public: + basic_ifstream() {} +#if defined(GHC_OS_WINDOWS) && !defined(__GNUC__) + explicit basic_ifstream(const path& p, std::ios_base::openmode mode = std::ios_base::in) + : std::basic_ifstream<charT, traits>(p.wstring().c_str(), mode) + { + } + void open(const path& p, std::ios_base::openmode mode = std::ios_base::in) { std::basic_ifstream<charT, traits>::open(p.wstring().c_str(), mode); } +#else + explicit basic_ifstream(const path& p, std::ios_base::openmode mode = std::ios_base::in) + : std::basic_ifstream<charT, traits>(p.string().c_str(), mode) + { + } + void open(const path& p, std::ios_base::openmode mode = std::ios_base::in) { std::basic_ifstream<charT, traits>::open(p.string().c_str(), mode); } +#endif + basic_ifstream(const basic_ifstream&) = delete; + const basic_ifstream& operator=(const basic_ifstream&) = delete; + ~basic_ifstream() override {} +}; + +template <class charT, class traits = std::char_traits<charT>> +class basic_ofstream : public std::basic_ofstream<charT, traits> +{ +public: + basic_ofstream() {} +#if defined(GHC_OS_WINDOWS) && !defined(__GNUC__) + explicit basic_ofstream(const path& p, std::ios_base::openmode mode = std::ios_base::out) + : std::basic_ofstream<charT, traits>(p.wstring().c_str(), mode) + { + } + void open(const path& p, std::ios_base::openmode mode = std::ios_base::out) { std::basic_ofstream<charT, traits>::open(p.wstring().c_str(), mode); } +#else + explicit basic_ofstream(const path& p, std::ios_base::openmode mode = std::ios_base::out) + : std::basic_ofstream<charT, traits>(p.string().c_str(), mode) + { + } + void open(const path& p, std::ios_base::openmode mode = std::ios_base::out) { std::basic_ofstream<charT, traits>::open(p.string().c_str(), mode); } +#endif + basic_ofstream(const basic_ofstream&) = delete; + const basic_ofstream& operator=(const basic_ofstream&) = delete; + ~basic_ofstream() override {} +}; + +template <class charT, class traits = std::char_traits<charT>> +class basic_fstream : public std::basic_fstream<charT, traits> +{ +public: + basic_fstream() {} +#if defined(GHC_OS_WINDOWS) && !defined(__GNUC__) + explicit basic_fstream(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) + : std::basic_fstream<charT, traits>(p.wstring().c_str(), mode) + { + } + void open(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) { std::basic_fstream<charT, traits>::open(p.wstring().c_str(), mode); } +#else + explicit basic_fstream(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) + : std::basic_fstream<charT, traits>(p.string().c_str(), mode) + { + } + void open(const path& p, std::ios_base::openmode mode = std::ios_base::in | std::ios_base::out) { std::basic_fstream<charT, traits>::open(p.string().c_str(), mode); } +#endif + basic_fstream(const basic_fstream&) = delete; + const basic_fstream& operator=(const basic_fstream&) = delete; + ~basic_fstream() override {} +}; + +typedef basic_filebuf<char> filebuf; +typedef basic_filebuf<wchar_t> wfilebuf; +typedef basic_ifstream<char> ifstream; +typedef basic_ifstream<wchar_t> wifstream; +typedef basic_ofstream<char> ofstream; +typedef basic_ofstream<wchar_t> wofstream; +typedef basic_fstream<char> fstream; +typedef basic_fstream<wchar_t> wfstream; + +class GHC_FS_API_CLASS u8arguments +{ +public: + u8arguments(int& argc, char**& argv); + ~u8arguments() + { + _refargc = _argc; + _refargv = _argv; + } + + bool valid() const { return _isvalid; } + +private: + int _argc; + char** _argv; + int& _refargc; + char**& _refargv; + bool _isvalid; +#ifdef GHC_OS_WINDOWS + std::vector<std::string> _args; + std::vector<char*> _argp; +#endif +}; + +//------------------------------------------------------------------------------------------------- +// Implementation +//------------------------------------------------------------------------------------------------- + +namespace detail { +// GHC_FS_API void postprocess_path_with_format(path::impl_string_type& p, path::format fmt); +enum utf8_states_t { S_STRT = 0, S_RJCT = 8 }; +GHC_FS_API void appendUTF8(std::string& str, uint32_t unicode); +GHC_FS_API bool is_surrogate(uint32_t c); +GHC_FS_API bool is_high_surrogate(uint32_t c); +GHC_FS_API bool is_low_surrogate(uint32_t c); +GHC_FS_API unsigned consumeUtf8Fragment(const unsigned state, const uint8_t fragment, uint32_t& codepoint); +enum class portable_error { + none = 0, + exists, + not_found, + not_supported, + not_implemented, + invalid_argument, + is_a_directory, +}; +GHC_FS_API std::error_code make_error_code(portable_error err); +#ifdef GHC_OS_WINDOWS +GHC_FS_API std::error_code make_system_error(uint32_t err = 0); +#else +GHC_FS_API std::error_code make_system_error(int err = 0); +#endif +} // namespace detail + +namespace detail { + +#ifdef GHC_EXPAND_IMPL + +GHC_INLINE std::error_code make_error_code(portable_error err) +{ +#ifdef GHC_OS_WINDOWS + switch (err) { + case portable_error::none: + return std::error_code(); + case portable_error::exists: + return std::error_code(ERROR_ALREADY_EXISTS, std::system_category()); + case portable_error::not_found: + return std::error_code(ERROR_PATH_NOT_FOUND, std::system_category()); + case portable_error::not_supported: + return std::error_code(ERROR_NOT_SUPPORTED, std::system_category()); + case portable_error::not_implemented: + return std::error_code(ERROR_CALL_NOT_IMPLEMENTED, std::system_category()); + case portable_error::invalid_argument: + return std::error_code(ERROR_INVALID_PARAMETER, std::system_category()); + case portable_error::is_a_directory: +#ifdef ERROR_DIRECTORY_NOT_SUPPORTED + return std::error_code(ERROR_DIRECTORY_NOT_SUPPORTED, std::system_category()); +#else + return std::error_code(ERROR_NOT_SUPPORTED, std::system_category()); +#endif + } +#else + switch (err) { + case portable_error::none: + return std::error_code(); + case portable_error::exists: + return std::error_code(EEXIST, std::system_category()); + case portable_error::not_found: + return std::error_code(ENOENT, std::system_category()); + case portable_error::not_supported: + return std::error_code(ENOTSUP, std::system_category()); + case portable_error::not_implemented: + return std::error_code(ENOSYS, std::system_category()); + case portable_error::invalid_argument: + return std::error_code(EINVAL, std::system_category()); + case portable_error::is_a_directory: + return std::error_code(EISDIR, std::system_category()); + } +#endif + return std::error_code(); +} + +#ifdef GHC_OS_WINDOWS +GHC_INLINE std::error_code make_system_error(uint32_t err) +{ + return std::error_code(err ? static_cast<int>(err) : static_cast<int>(::GetLastError()), std::system_category()); +} +#else +GHC_INLINE std::error_code make_system_error(int err) +{ + return std::error_code(err ? err : errno, std::system_category()); +} +#endif + +#endif // GHC_EXPAND_IMPL + +template <typename Enum> +using EnableBitmask = typename std::enable_if<std::is_same<Enum, perms>::value || std::is_same<Enum, perm_options>::value || std::is_same<Enum, copy_options>::value || std::is_same<Enum, directory_options>::value, Enum>::type; +} // namespace detail + +template <typename Enum> +detail::EnableBitmask<Enum> operator&(Enum X, Enum Y) +{ + using underlying = typename std::underlying_type<Enum>::type; + return static_cast<Enum>(static_cast<underlying>(X) & static_cast<underlying>(Y)); +} + +template <typename Enum> +detail::EnableBitmask<Enum> operator|(Enum X, Enum Y) +{ + using underlying = typename std::underlying_type<Enum>::type; + return static_cast<Enum>(static_cast<underlying>(X) | static_cast<underlying>(Y)); +} + +template <typename Enum> +detail::EnableBitmask<Enum> operator^(Enum X, Enum Y) +{ + using underlying = typename std::underlying_type<Enum>::type; + return static_cast<Enum>(static_cast<underlying>(X) ^ static_cast<underlying>(Y)); +} + +template <typename Enum> +detail::EnableBitmask<Enum> operator~(Enum X) +{ + using underlying = typename std::underlying_type<Enum>::type; + return static_cast<Enum>(~static_cast<underlying>(X)); +} + +template <typename Enum> +detail::EnableBitmask<Enum>& operator&=(Enum& X, Enum Y) +{ + X = X & Y; + return X; +} + +template <typename Enum> +detail::EnableBitmask<Enum>& operator|=(Enum& X, Enum Y) +{ + X = X | Y; + return X; +} + +template <typename Enum> +detail::EnableBitmask<Enum>& operator^=(Enum& X, Enum Y) +{ + X = X ^ Y; + return X; +} + +#ifdef GHC_EXPAND_IMPL + +namespace detail { + +GHC_INLINE bool in_range(uint32_t c, uint32_t lo, uint32_t hi) +{ + return (static_cast<uint32_t>(c - lo) < (hi - lo + 1)); +} + +GHC_INLINE bool is_surrogate(uint32_t c) +{ + return in_range(c, 0xd800, 0xdfff); +} + +GHC_INLINE bool is_high_surrogate(uint32_t c) +{ + return (c & 0xfffffc00) == 0xd800; +} + +GHC_INLINE bool is_low_surrogate(uint32_t c) +{ + return (c & 0xfffffc00) == 0xdc00; +} + +GHC_INLINE void appendUTF8(std::string& str, uint32_t unicode) +{ + if (unicode <= 0x7f) { + str.push_back(static_cast<char>(unicode)); + } + else if (unicode >= 0x80 && unicode <= 0x7ff) { + str.push_back(static_cast<char>((unicode >> 6) + 192)); + str.push_back(static_cast<char>((unicode & 0x3f) + 128)); + } + else if ((unicode >= 0x800 && unicode <= 0xd7ff) || (unicode >= 0xe000 && unicode <= 0xffff)) { + str.push_back(static_cast<char>((unicode >> 12) + 224)); + str.push_back(static_cast<char>(((unicode & 0xfff) >> 6) + 128)); + str.push_back(static_cast<char>((unicode & 0x3f) + 128)); + } + else if (unicode >= 0x10000 && unicode <= 0x10ffff) { + str.push_back(static_cast<char>((unicode >> 18) + 240)); + str.push_back(static_cast<char>(((unicode & 0x3ffff) >> 12) + 128)); + str.push_back(static_cast<char>(((unicode & 0xfff) >> 6) + 128)); + str.push_back(static_cast<char>((unicode & 0x3f) + 128)); + } + else { +#ifdef GHC_RAISE_UNICODE_ERRORS + throw filesystem_error("Illegal code point for unicode character.", str, std::make_error_code(std::errc::illegal_byte_sequence)); +#else + appendUTF8(str, 0xfffd); +#endif + } +} + +// Thanks to Bjoern Hoehrmann (https://bjoern.hoehrmann.de/utf-8/decoder/dfa/) +// and Taylor R Campbell for the ideas to this DFA approach of UTF-8 decoding; +// Generating debugging and shrinking my own DFA from scratch was a day of fun! +GHC_INLINE unsigned consumeUtf8Fragment(const unsigned state, const uint8_t fragment, uint32_t& codepoint) +{ + static const uint32_t utf8_state_info[] = { + // encoded states + 0x11111111u, 0x11111111u, 0x77777777u, 0x77777777u, 0x88888888u, 0x88888888u, 0x88888888u, 0x88888888u, 0x22222299u, 0x22222222u, 0x22222222u, 0x22222222u, 0x3333333au, 0x33433333u, 0x9995666bu, 0x99999999u, + 0x88888880u, 0x22818108u, 0x88888881u, 0x88888882u, 0x88888884u, 0x88888887u, 0x88888886u, 0x82218108u, 0x82281108u, 0x88888888u, 0x88888883u, 0x88888885u, 0u, 0u, 0u, 0u, + }; + uint8_t category = fragment < 128 ? 0 : (utf8_state_info[(fragment >> 3) & 0xf] >> ((fragment & 7) << 2)) & 0xf; + codepoint = (state ? (codepoint << 6) | (fragment & 0x3fu) : (0xffu >> category) & fragment); + return state == S_RJCT ? static_cast<unsigned>(S_RJCT) : static_cast<unsigned>((utf8_state_info[category + 16] >> (state << 2)) & 0xf); +} + +GHC_INLINE bool validUtf8(const std::string& utf8String) +{ + std::string::const_iterator iter = utf8String.begin(); + unsigned utf8_state = S_STRT; + std::uint32_t codepoint = 0; + while (iter < utf8String.end()) { + if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast<uint8_t>(*iter++), codepoint)) == S_RJCT) { + return false; + } + } + if (utf8_state) { + return false; + } + return true; +} + +} // namespace detail + +#endif + +namespace detail { + +template <class StringType, typename std::enable_if<(sizeof(typename StringType::value_type) == 1)>::type* = nullptr> +inline StringType fromUtf8(const std::string& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) +{ + return StringType(utf8String.begin(), utf8String.end(), alloc); +} + +template <class StringType, typename std::enable_if<(sizeof(typename StringType::value_type) == 2)>::type* = nullptr> +inline StringType fromUtf8(const std::string& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) +{ + StringType result(alloc); + result.reserve(utf8String.length()); + std::string::const_iterator iter = utf8String.begin(); + unsigned utf8_state = S_STRT; + std::uint32_t codepoint = 0; + while (iter < utf8String.end()) { + if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast<uint8_t>(*iter++), codepoint)) == S_STRT) { + if (codepoint <= 0xffff) { + result += static_cast<typename StringType::value_type>(codepoint); + } + else { + codepoint -= 0x10000; + result += static_cast<typename StringType::value_type>((codepoint >> 10) + 0xd800); + result += static_cast<typename StringType::value_type>((codepoint & 0x3ff) + 0xdc00); + } + codepoint = 0; + } + else if (utf8_state == S_RJCT) { +#ifdef GHC_RAISE_UNICODE_ERRORS + throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); +#else + result += static_cast<typename StringType::value_type>(0xfffd); + utf8_state = S_STRT; + codepoint = 0; +#endif + } + } + if (utf8_state) { +#ifdef GHC_RAISE_UNICODE_ERRORS + throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); +#else + result += static_cast<typename StringType::value_type>(0xfffd); +#endif + } + return result; +} + +template <class StringType, typename std::enable_if<(sizeof(typename StringType::value_type) == 4)>::type* = nullptr> +inline StringType fromUtf8(const std::string& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type()) +{ + StringType result(alloc); + result.reserve(utf8String.length()); + std::string::const_iterator iter = utf8String.begin(); + unsigned utf8_state = S_STRT; + std::uint32_t codepoint = 0; + while (iter < utf8String.end()) { + if ((utf8_state = consumeUtf8Fragment(utf8_state, static_cast<uint8_t>(*iter++), codepoint)) == S_STRT) { + result += static_cast<typename StringType::value_type>(codepoint); + codepoint = 0; + } + else if (utf8_state == S_RJCT) { +#ifdef GHC_RAISE_UNICODE_ERRORS + throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); +#else + result += static_cast<typename StringType::value_type>(0xfffd); + utf8_state = S_STRT; + codepoint = 0; +#endif + } + } + if (utf8_state) { +#ifdef GHC_RAISE_UNICODE_ERRORS + throw filesystem_error("Illegal byte sequence for unicode character.", utf8String, std::make_error_code(std::errc::illegal_byte_sequence)); +#else + result += static_cast<typename StringType::value_type>(0xfffd); +#endif + } + return result; +} + +template <typename charT, typename traits, typename Alloc, typename std::enable_if<(sizeof(charT) == 1), int>::type size = 1> +inline std::string toUtf8(const std::basic_string<charT, traits, Alloc>& unicodeString) +{ + return std::string(unicodeString.begin(), unicodeString.end()); +} + +template <typename charT, typename traits, typename Alloc, typename std::enable_if<(sizeof(charT) == 2), int>::type size = 2> +inline std::string toUtf8(const std::basic_string<charT, traits, Alloc>& unicodeString) +{ + std::string result; + for (auto iter = unicodeString.begin(); iter != unicodeString.end(); ++iter) { + char32_t c = *iter; + if (is_surrogate(c)) { + ++iter; + if (iter != unicodeString.end() && is_high_surrogate(c) && is_low_surrogate(*iter)) { + appendUTF8(result, (char32_t(c) << 10) + *iter - 0x35fdc00); + } + else { +#ifdef GHC_RAISE_UNICODE_ERRORS + throw filesystem_error("Illegal code point for unicode character.", result, std::make_error_code(std::errc::illegal_byte_sequence)); +#else + appendUTF8(result, 0xfffd); + if(iter == unicodeString.end()) { + break; + } +#endif + } + } + else { + appendUTF8(result, c); + } + } + return result; +} + +template <typename charT, typename traits, typename Alloc, typename std::enable_if<(sizeof(charT) == 4), int>::type size = 4> +inline std::string toUtf8(const std::basic_string<charT, traits, Alloc>& unicodeString) +{ + std::string result; + for (auto c : unicodeString) { + appendUTF8(result, static_cast<uint32_t>(c)); + } + return result; +} + +template <typename charT> +inline std::string toUtf8(const charT* unicodeString) +{ + return toUtf8(std::basic_string<charT, std::char_traits<charT>>(unicodeString)); +} + +} // namespace detail + +#ifdef GHC_EXPAND_IMPL + +namespace detail { + +GHC_INLINE bool startsWith(const std::string& what, const std::string& with) +{ + return with.length() <= what.length() && equal(with.begin(), with.end(), what.begin()); +} + +} // namespace detail + +GHC_INLINE void path::postprocess_path_with_format(path::impl_string_type& p, path::format fmt) +{ +#ifdef GHC_RAISE_UNICODE_ERRORS + if(!detail::validUtf8(p)) { + path t; + t._path = p; + throw filesystem_error("Illegal byte sequence for unicode character.", t, std::make_error_code(std::errc::illegal_byte_sequence)); + } +#endif + switch (fmt) { +#ifndef GHC_OS_WINDOWS + case path::auto_format: + case path::native_format: +#endif + case path::generic_format: + // nothing to do + break; +#ifdef GHC_OS_WINDOWS + case path::auto_format: + case path::native_format: + if (detail::startsWith(p, std::string("\\\\?\\"))) { + // remove Windows long filename marker + p.erase(0, 4); + if (detail::startsWith(p, std::string("UNC\\"))) { + p.erase(0, 2); + p[0] = '\\'; + } + } + for (auto& c : p) { + if (c == '\\') { + c = '/'; + } + } + break; +#endif + } + if (p.length() > 2 && p[0] == '/' && p[1] == '/' && p[2] != '/') { + std::string::iterator new_end = std::unique(p.begin() + 2, p.end(), [](path::value_type lhs, path::value_type rhs) { return lhs == rhs && lhs == '/'; }); + p.erase(new_end, p.end()); + } + else { + std::string::iterator new_end = std::unique(p.begin(), p.end(), [](path::value_type lhs, path::value_type rhs) { return lhs == rhs && lhs == '/'; }); + p.erase(new_end, p.end()); + } +} + +#endif // GHC_EXPAND_IMPL + +template <class Source, typename> +inline path::path(const Source& source, format fmt) + : _path(detail::toUtf8(source)) +{ + postprocess_path_with_format(_path, fmt); +} +template <> +inline path::path(const std::wstring& source, format fmt) +{ + _path = detail::toUtf8(source); + postprocess_path_with_format(_path, fmt); +} +template <> +inline path::path(const std::u16string& source, format fmt) +{ + _path = detail::toUtf8(source); + postprocess_path_with_format(_path, fmt); +} +template <> +inline path::path(const std::u32string& source, format fmt) +{ + _path = detail::toUtf8(source); + postprocess_path_with_format(_path, fmt); +} + +#ifdef __cpp_lib_string_view +template <> +inline path::path(const std::string_view& source, format fmt) +{ + _path = detail::toUtf8(std::string(source)); + postprocess_path_with_format(_path, fmt); +} +#endif + +template <class Source, typename> +inline path u8path(const Source& source) +{ + return path(source); +} +template <class InputIterator> +inline path u8path(InputIterator first, InputIterator last) +{ + return path(first, last); +} + +template <class InputIterator> +inline path::path(InputIterator first, InputIterator last, format fmt) + : path(std::basic_string<typename std::iterator_traits<InputIterator>::value_type>(first, last), fmt) +{ + // delegated +} + +#ifdef GHC_EXPAND_IMPL + +namespace detail { + +GHC_INLINE bool equals_simple_insensitive(const char* str1, const char* str2) +{ +#ifdef GHC_OS_WINDOWS +#ifdef __GNUC__ + while (::tolower((unsigned char)*str1) == ::tolower((unsigned char)*str2++)) { + if (*str1++ == 0) + return true; + } + return false; +#else + return 0 == ::_stricmp(str1, str2); +#endif +#else + return 0 == ::strcasecmp(str1, str2); +#endif +} + +GHC_INLINE const char* strerror_adapter(char* gnu, char*) +{ + return gnu; +} + +GHC_INLINE const char* strerror_adapter(int posix, char* buffer) +{ + if(posix) { + return "Error in strerror_r!"; + } + return buffer; +} + +template <typename ErrorNumber> +GHC_INLINE std::string systemErrorText(ErrorNumber code = 0) +{ +#if defined(GHC_OS_WINDOWS) + LPVOID msgBuf; + DWORD dw = code ? static_cast<DWORD>(code) : ::GetLastError(); + FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPWSTR)&msgBuf, 0, NULL); + std::string msg = toUtf8(std::wstring((LPWSTR)msgBuf)); + LocalFree(msgBuf); + return msg; +#else + char buffer[512]; + return strerror_adapter(strerror_r(code ? code : errno, buffer, sizeof(buffer)), buffer); +#endif +} + +#ifdef GHC_OS_WINDOWS +using CreateSymbolicLinkW_fp = BOOLEAN(WINAPI*)(LPCWSTR, LPCWSTR, DWORD); +using CreateHardLinkW_fp = BOOLEAN(WINAPI*)(LPCWSTR, LPCWSTR, LPSECURITY_ATTRIBUTES); + +GHC_INLINE void create_symlink(const path& target_name, const path& new_symlink, bool to_directory, std::error_code& ec) +{ + std::error_code tec; + auto fs = status(target_name, tec); + if ((fs.type() == file_type::directory && !to_directory) || (fs.type() == file_type::regular && to_directory)) { + ec = detail::make_error_code(detail::portable_error::not_supported); + return; + } +#if defined(__GNUC__) && __GNUC__ >= 8 +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-function-type" +#endif + static CreateSymbolicLinkW_fp api_call = reinterpret_cast<CreateSymbolicLinkW_fp>(GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "CreateSymbolicLinkW")); +#if defined(__GNUC__) && __GNUC__ >= 8 +#pragma GCC diagnostic pop +#endif + if (api_call) { + if (api_call(detail::fromUtf8<std::wstring>(new_symlink.u8string()).c_str(), detail::fromUtf8<std::wstring>(target_name.u8string()).c_str(), to_directory ? 1 : 0) == 0) { + auto result = ::GetLastError(); + if (result == ERROR_PRIVILEGE_NOT_HELD && api_call(detail::fromUtf8<std::wstring>(new_symlink.u8string()).c_str(), detail::fromUtf8<std::wstring>(target_name.u8string()).c_str(), to_directory ? 3 : 2) != 0) { + return; + } + ec = detail::make_system_error(result); + } + } + else { + ec = detail::make_system_error(ERROR_NOT_SUPPORTED); + } +} + +GHC_INLINE void create_hardlink(const path& target_name, const path& new_hardlink, std::error_code& ec) +{ +#if defined(__GNUC__) && __GNUC__ >= 8 +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-function-type" +#endif + static CreateHardLinkW_fp api_call = reinterpret_cast<CreateHardLinkW_fp>(GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "CreateHardLinkW")); +#if defined(__GNUC__) && __GNUC__ >= 8 +#pragma GCC diagnostic pop +#endif + if (api_call) { + if (api_call(detail::fromUtf8<std::wstring>(new_hardlink.u8string()).c_str(), detail::fromUtf8<std::wstring>(target_name.u8string()).c_str(), NULL) == 0) { + ec = detail::make_system_error(); + } + } + else { + ec = detail::make_system_error(ERROR_NOT_SUPPORTED); + } +} +#else +GHC_INLINE void create_symlink(const path& target_name, const path& new_symlink, bool, std::error_code& ec) +{ + if (::symlink(target_name.c_str(), new_symlink.c_str()) != 0) { + ec = detail::make_system_error(); + } +} + +GHC_INLINE void create_hardlink(const path& target_name, const path& new_hardlink, std::error_code& ec) +{ + if (::link(target_name.c_str(), new_hardlink.c_str()) != 0) { + ec = detail::make_system_error(); + } +} +#endif + +template <typename T> +GHC_INLINE file_status file_status_from_st_mode(T mode) +{ +#ifdef GHC_OS_WINDOWS + file_type ft = file_type::unknown; + if ((mode & _S_IFDIR) == _S_IFDIR) { + ft = file_type::directory; + } + else if ((mode & _S_IFREG) == _S_IFREG) { + ft = file_type::regular; + } + else if ((mode & _S_IFCHR) == _S_IFCHR) { + ft = file_type::character; + } + perms prms = static_cast<perms>(mode & 0xfff); + return file_status(ft, prms); +#else + file_type ft = file_type::unknown; + if (S_ISDIR(mode)) { + ft = file_type::directory; + } + else if (S_ISREG(mode)) { + ft = file_type::regular; + } + else if (S_ISCHR(mode)) { + ft = file_type::character; + } + else if (S_ISBLK(mode)) { + ft = file_type::block; + } + else if (S_ISFIFO(mode)) { + ft = file_type::fifo; + } + else if (S_ISLNK(mode)) { + ft = file_type::symlink; + } + else if (S_ISSOCK(mode)) { + ft = file_type::socket; + } + perms prms = static_cast<perms>(mode & 0xfff); + return file_status(ft, prms); +#endif +} + +GHC_INLINE path resolveSymlink(const path& p, std::error_code& ec) +{ +#ifdef GHC_OS_WINDOWS +#ifndef REPARSE_DATA_BUFFER_HEADER_SIZE + typedef struct _REPARSE_DATA_BUFFER + { + ULONG ReparseTag; + USHORT ReparseDataLength; + USHORT Reserved; + union + { + struct + { + USHORT SubstituteNameOffset; + USHORT SubstituteNameLength; + USHORT PrintNameOffset; + USHORT PrintNameLength; + ULONG Flags; + WCHAR PathBuffer[1]; + } SymbolicLinkReparseBuffer; + struct + { + USHORT SubstituteNameOffset; + USHORT SubstituteNameLength; + USHORT PrintNameOffset; + USHORT PrintNameLength; + WCHAR PathBuffer[1]; + } MountPointReparseBuffer; + struct + { + UCHAR DataBuffer[1]; + } GenericReparseBuffer; + } DUMMYUNIONNAME; + } REPARSE_DATA_BUFFER; +#ifndef MAXIMUM_REPARSE_DATA_BUFFER_SIZE +#define MAXIMUM_REPARSE_DATA_BUFFER_SIZE (16 * 1024) +#endif +#endif + + std::shared_ptr<void> file(CreateFileW(p.wstring().c_str(), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); + if (file.get() == INVALID_HANDLE_VALUE) { + ec = detail::make_system_error(); + return path(); + } + + std::shared_ptr<REPARSE_DATA_BUFFER> reparseData((REPARSE_DATA_BUFFER*)std::calloc(1, MAXIMUM_REPARSE_DATA_BUFFER_SIZE), std::free); + ULONG bufferUsed; + path result; + if (DeviceIoControl(file.get(), FSCTL_GET_REPARSE_POINT, 0, 0, reparseData.get(), MAXIMUM_REPARSE_DATA_BUFFER_SIZE, &bufferUsed, 0)) { + if (IsReparseTagMicrosoft(reparseData->ReparseTag)) { + switch (reparseData->ReparseTag) { + case IO_REPARSE_TAG_SYMLINK: + result = std::wstring(&reparseData->SymbolicLinkReparseBuffer.PathBuffer[reparseData->SymbolicLinkReparseBuffer.PrintNameOffset / sizeof(WCHAR)], reparseData->SymbolicLinkReparseBuffer.PrintNameLength / sizeof(WCHAR)); + break; + case IO_REPARSE_TAG_MOUNT_POINT: + result = std::wstring(&reparseData->MountPointReparseBuffer.PathBuffer[reparseData->MountPointReparseBuffer.PrintNameOffset / sizeof(WCHAR)], reparseData->MountPointReparseBuffer.PrintNameLength / sizeof(WCHAR)); + break; + default: + break; + } + } + } + else { + ec = detail::make_system_error(); + } + return result; +#else + size_t bufferSize = 256; + while (true) { + std::vector<char> buffer(bufferSize, static_cast<char>(0)); + auto rc = ::readlink(p.c_str(), buffer.data(), buffer.size()); + if (rc < 0) { + ec = detail::make_system_error(); + return path(); + } + else if (rc < static_cast<int>(bufferSize)) { + return path(std::string(buffer.data(), static_cast<std::string::size_type>(rc))); + } + bufferSize *= 2; + } + return path(); +#endif +} + +#ifdef GHC_OS_WINDOWS +GHC_INLINE time_t timeFromFILETIME(const FILETIME& ft) +{ + ULARGE_INTEGER ull; + ull.LowPart = ft.dwLowDateTime; + ull.HighPart = ft.dwHighDateTime; + return static_cast<time_t>(ull.QuadPart / 10000000ULL - 11644473600ULL); +} + +GHC_INLINE void timeToFILETIME(time_t t, FILETIME& ft) +{ + LONGLONG ll; + ll = Int32x32To64(t, 10000000) + 116444736000000000; + ft.dwLowDateTime = static_cast<DWORD>(ll); + ft.dwHighDateTime = static_cast<DWORD>(ll >> 32); +} + +template <typename INFO> +GHC_INLINE uintmax_t hard_links_from_INFO(const INFO* info) +{ + return static_cast<uintmax_t>(-1); +} + +template <> +GHC_INLINE uintmax_t hard_links_from_INFO<BY_HANDLE_FILE_INFORMATION>(const BY_HANDLE_FILE_INFORMATION* info) +{ + return info->nNumberOfLinks; +} + +template <typename INFO> +GHC_INLINE file_status status_from_INFO(const path& p, const INFO* info, std::error_code&, uintmax_t* sz = nullptr, time_t* lwt = nullptr) noexcept +{ + file_type ft = file_type::unknown; + if ((info->dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) { + ft = file_type::symlink; + } + else { + if ((info->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) { + ft = file_type::directory; + } + else { + ft = file_type::regular; + } + } + perms prms = perms::owner_read | perms::group_read | perms::others_read; + if (!(info->dwFileAttributes & FILE_ATTRIBUTE_READONLY)) { + prms = prms | perms::owner_write | perms::group_write | perms::others_write; + } + std::string ext = p.extension().generic_string(); + if (equals_simple_insensitive(ext.c_str(), ".exe") || equals_simple_insensitive(ext.c_str(), ".cmd") || equals_simple_insensitive(ext.c_str(), ".bat") || equals_simple_insensitive(ext.c_str(), ".com")) { + prms = prms | perms::owner_exec | perms::group_exec | perms::others_exec; + } + if (sz) { + *sz = static_cast<uintmax_t>(info->nFileSizeHigh) << (sizeof(info->nFileSizeHigh) * 8) | info->nFileSizeLow; + } + if (lwt) { + *lwt = detail::timeFromFILETIME(info->ftLastWriteTime); + } + return file_status(ft, prms); +} + +#endif + +GHC_INLINE bool is_not_found_error(std::error_code& ec) +{ +#ifdef GHC_OS_WINDOWS + return ec.value() == ERROR_FILE_NOT_FOUND || ec.value() == ERROR_PATH_NOT_FOUND || ec.value() == ERROR_INVALID_NAME; +#else + return ec.value() == ENOENT || ec.value() == ENOTDIR; +#endif +} + +GHC_INLINE file_status symlink_status_ex(const path& p, std::error_code& ec, uintmax_t* sz = nullptr, uintmax_t* nhl = nullptr, time_t* lwt = nullptr) noexcept +{ +#ifdef GHC_OS_WINDOWS + file_status fs; + WIN32_FILE_ATTRIBUTE_DATA attr; + if (!GetFileAttributesExW(detail::fromUtf8<std::wstring>(p.u8string()).c_str(), GetFileExInfoStandard, &attr)) { + ec = detail::make_system_error(); + } + else { + ec.clear(); + fs = detail::status_from_INFO(p, &attr, ec, sz, lwt); + if (nhl) { + *nhl = 0; + } + if (attr.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { + fs.type(file_type::symlink); + } + } + if (detail::is_not_found_error(ec)) { + return file_status(file_type::not_found); + } + return ec ? file_status(file_type::none) : fs; +#else + (void)sz; + (void)nhl; + (void)lwt; + struct ::stat fs; + auto result = ::lstat(p.c_str(), &fs); + if (result == 0) { + ec.clear(); + file_status f_s = detail::file_status_from_st_mode(fs.st_mode); + return f_s; + } + ec = detail::make_system_error(); + if (detail::is_not_found_error(ec)) { + return file_status(file_type::not_found, perms::unknown); + } + return file_status(file_type::none); +#endif +} + +GHC_INLINE file_status status_ex(const path& p, std::error_code& ec, file_status* sls = nullptr, uintmax_t* sz = nullptr, uintmax_t* nhl = nullptr, time_t* lwt = nullptr, int recurse_count = 0) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + if (recurse_count > 16) { + ec = detail::make_system_error(0x2A9 /*ERROR_STOPPED_ON_SYMLINK*/); + return file_status(file_type::unknown); + } + WIN32_FILE_ATTRIBUTE_DATA attr; + if (!::GetFileAttributesExW(p.wstring().c_str(), GetFileExInfoStandard, &attr)) { + ec = detail::make_system_error(); + } + else if (attr.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { + path target = resolveSymlink(p, ec); + file_status result; + if (!ec && !target.empty()) { + if (sls) { + *sls = status_from_INFO(p, &attr, ec); + } + return detail::status_ex(target, ec, nullptr, sz, nhl, lwt, recurse_count + 1); + } + return file_status(file_type::unknown); + } + if (ec) { + if (detail::is_not_found_error(ec)) { + return file_status(file_type::not_found); + } + return file_status(file_type::none); + } + if (nhl) { + *nhl = 0; + } + return detail::status_from_INFO(p, &attr, ec, sz, lwt); +#else + (void)recurse_count; + struct ::stat st; + auto result = ::lstat(p.c_str(), &st); + if (result == 0) { + ec.clear(); + file_status fs = detail::file_status_from_st_mode(st.st_mode); + if (fs.type() == file_type::symlink) { + result = ::stat(p.c_str(), &st); + if (result == 0) { + if (sls) { + *sls = fs; + } + fs = detail::file_status_from_st_mode(st.st_mode); + } + } + if (sz) { + *sz = static_cast<uintmax_t>(st.st_size); + } + if (nhl) { + *nhl = st.st_nlink; + } + if (lwt) { + *lwt = st.st_mtime; + } + return fs; + } + else { + ec = detail::make_system_error(); + if (detail::is_not_found_error(ec)) { + return file_status(file_type::not_found, perms::unknown); + } + return file_status(file_type::none); + } +#endif +} + +} // namespace detail + +GHC_INLINE u8arguments::u8arguments(int& argc, char**& argv) + : _argc(argc) + , _argv(argv) + , _refargc(argc) + , _refargv(argv) + , _isvalid(false) +{ +#ifdef GHC_OS_WINDOWS + LPWSTR* p; + p = ::CommandLineToArgvW(::GetCommandLineW(), &argc); + _args.reserve(static_cast<size_t>(argc)); + _argp.reserve(static_cast<size_t>(argc)); + for (size_t i = 0; i < static_cast<size_t>(argc); ++i) { + _args.push_back(detail::toUtf8(std::wstring(p[i]))); + _argp.push_back((char*)_args[i].data()); + } + argv = _argp.data(); + ::LocalFree(p); + _isvalid = true; +#else + std::setlocale(LC_ALL, ""); +#if defined(__ANDROID__) && __ANDROID_API__ < 26 + _isvalid = true; +#else + if (detail::equals_simple_insensitive(::nl_langinfo(CODESET), "UTF-8")) { + _isvalid = true; + } +#endif +#endif +} + +//----------------------------------------------------------------------------- +// 30.10.8.4.1 constructors and destructor + +GHC_INLINE path::path() noexcept {} + +GHC_INLINE path::path(const path& p) + : _path(p._path) +{ +} + +GHC_INLINE path::path(path&& p) noexcept + : _path(std::move(p._path)) +{ +} + +GHC_INLINE path::path(string_type&& source, format fmt) +#ifdef GHC_USE_WCHAR_T + : _path(detail::toUtf8(source)) +#else + : _path(std::move(source)) +#endif +{ + postprocess_path_with_format(_path, fmt); +} + +#endif // GHC_EXPAND_IMPL + +template <class Source, typename> +inline path::path(const Source& source, const std::locale& loc, format fmt) + : path(source, fmt) +{ + std::string locName = loc.name(); + if (!(locName.length() >= 5 && (locName.substr(locName.length() - 5) == "UTF-8" || locName.substr(locName.length() - 5) == "utf-8"))) { + throw filesystem_error("This implementation only supports UTF-8 locales!", path(_path), detail::make_error_code(detail::portable_error::not_supported)); + } +} + +template <class InputIterator> +inline path::path(InputIterator first, InputIterator last, const std::locale& loc, format fmt) + : path(std::basic_string<typename std::iterator_traits<InputIterator>::value_type>(first, last), fmt) +{ + std::string locName = loc.name(); + if (!(locName.length() >= 5 && (locName.substr(locName.length() - 5) == "UTF-8" || locName.substr(locName.length() - 5) == "utf-8"))) { + throw filesystem_error("This implementation only supports UTF-8 locales!", path(_path), detail::make_error_code(detail::portable_error::not_supported)); + } +} + +#ifdef GHC_EXPAND_IMPL + +GHC_INLINE path::~path() {} + +//----------------------------------------------------------------------------- +// 30.10.8.4.2 assignments + +GHC_INLINE path& path::operator=(const path& p) +{ + _path = p._path; + return *this; +} + +GHC_INLINE path& path::operator=(path&& p) noexcept +{ + _path = std::move(p._path); + return *this; +} + +GHC_INLINE path& path::operator=(path::string_type&& source) +{ + return assign(source); +} + +GHC_INLINE path& path::assign(path::string_type&& source) +{ +#ifdef GHC_USE_WCHAR_T + _path = detail::toUtf8(source); +#else + _path = std::move(source); +#endif + postprocess_path_with_format(_path, native_format); + return *this; +} + +#endif // GHC_EXPAND_IMPL + +template <class Source> +inline path& path::operator=(const Source& source) +{ + return assign(source); +} + +template <class Source> +inline path& path::assign(const Source& source) +{ + _path.assign(detail::toUtf8(source)); + postprocess_path_with_format(_path, native_format); + return *this; +} + +template <> +inline path& path::assign<path>(const path& source) +{ + _path = source._path; + return *this; +} + +template <class InputIterator> +inline path& path::assign(InputIterator first, InputIterator last) +{ + _path.assign(first, last); + postprocess_path_with_format(_path, native_format); + return *this; +} + +#ifdef GHC_EXPAND_IMPL + +//----------------------------------------------------------------------------- +// 30.10.8.4.3 appends + +GHC_INLINE path& path::operator/=(const path& p) +{ + if (p.empty()) { + // was: if ((!has_root_directory() && is_absolute()) || has_filename()) + if (!_path.empty() && _path[_path.length() - 1] != '/' && _path[_path.length() - 1] != ':') { + _path += '/'; + } + return *this; + } + if ((p.is_absolute() && (_path != root_name() || p._path != "/")) || (p.has_root_name() && p.root_name() != root_name())) { + assign(p); + return *this; + } + if (p.has_root_directory()) { + assign(root_name()); + } + else if ((!has_root_directory() && is_absolute()) || has_filename()) { + _path += '/'; + } + auto iter = p.begin(); + bool first = true; + if (p.has_root_name()) { + ++iter; + } + while (iter != p.end()) { + if (!first && !(!_path.empty() && _path[_path.length() - 1] == '/')) { + _path += '/'; + } + first = false; + _path += (*iter++).generic_string(); + } + return *this; +} + +GHC_INLINE void path::append_name(const char* name) +{ + if (_path.empty()) { + this->operator/=(path(name)); + } + else { + if (_path.back() != path::generic_separator) { + _path.push_back(path::generic_separator); + } + _path += name; + } +} + +#endif // GHC_EXPAND_IMPL + +template <class Source> +inline path& path::operator/=(const Source& source) +{ + return append(source); +} + +template <class Source> +inline path& path::append(const Source& source) +{ + return this->operator/=(path(detail::toUtf8(source))); +} + +template <> +inline path& path::append<path>(const path& p) +{ + return this->operator/=(p); +} + +template <class InputIterator> +inline path& path::append(InputIterator first, InputIterator last) +{ + std::basic_string<typename std::iterator_traits<InputIterator>::value_type> part(first, last); + return append(part); +} + +#ifdef GHC_EXPAND_IMPL + +//----------------------------------------------------------------------------- +// 30.10.8.4.4 concatenation + +GHC_INLINE path& path::operator+=(const path& x) +{ + return concat(x._path); +} + +GHC_INLINE path& path::operator+=(const string_type& x) +{ + return concat(x); +} + +#ifdef __cpp_lib_string_view +GHC_INLINE path& path::operator+=(std::basic_string_view<value_type> x) +{ + return concat(x); +} +#endif + +GHC_INLINE path& path::operator+=(const value_type* x) +{ + return concat(string_type(x)); +} + +GHC_INLINE path& path::operator+=(value_type x) +{ +#ifdef GHC_OS_WINDOWS + if (x == '\\') { + x = generic_separator; + } +#endif + if (_path.empty() || _path.back() != generic_separator) { +#ifdef GHC_USE_WCHAR_T + _path += detail::toUtf8(string_type(1, x)); +#else + _path += x; +#endif + } + return *this; +} + +#endif // GHC_EXPAND_IMPL + +template <class Source> +inline path::path_from_string<Source>& path::operator+=(const Source& x) +{ + return concat(x); +} + +template <class EcharT> +inline path::path_type_EcharT<EcharT>& path::operator+=(EcharT x) +{ + std::basic_string<EcharT> part(1, x); + concat(detail::toUtf8(part)); + return *this; +} + +template <class Source> +inline path& path::concat(const Source& x) +{ + path p(x); + postprocess_path_with_format(p._path, native_format); + _path += p._path; + return *this; +} +template <class InputIterator> +inline path& path::concat(InputIterator first, InputIterator last) +{ + _path.append(first, last); + postprocess_path_with_format(_path, native_format); + return *this; +} + +#ifdef GHC_EXPAND_IMPL + +//----------------------------------------------------------------------------- +// 30.10.8.4.5 modifiers +GHC_INLINE void path::clear() noexcept +{ + _path.clear(); +} + +GHC_INLINE path& path::make_preferred() +{ + // as this filesystem implementation only uses generic_format + // internally, this must be a no-op + return *this; +} + +GHC_INLINE path& path::remove_filename() +{ + if (has_filename()) { + _path.erase(_path.size() - filename()._path.size()); + } + return *this; +} + +GHC_INLINE path& path::replace_filename(const path& replacement) +{ + remove_filename(); + return append(replacement); +} + +GHC_INLINE path& path::replace_extension(const path& replacement) +{ + if (has_extension()) { + _path.erase(_path.size() - extension()._path.size()); + } + if (!replacement.empty() && replacement._path[0] != '.') { + _path += '.'; + } + return concat(replacement); +} + +GHC_INLINE void path::swap(path& rhs) noexcept +{ + _path.swap(rhs._path); +} + +//----------------------------------------------------------------------------- +// 30.10.8.4.6, native format observers +#ifdef GHC_OS_WINDOWS +GHC_INLINE path::impl_string_type path::native_impl() const +{ + impl_string_type result; + if (is_absolute() && _path.length() > MAX_PATH - 10) { + // expand long Windows filenames with marker + if (has_root_name() && _path[0] == '/') { + result = "\\\\?\\UNC" + _path.substr(1); + } + else { + result = "\\\\?\\" + _path; + } + } + else { + result = _path; + } + /*if (has_root_name() && root_name()._path[0] == '/') { + return _path; + }*/ + for (auto& c : result) { + if (c == '/') { + c = '\\'; + } + } + return result; +} +#else +GHC_INLINE const path::impl_string_type& path::native_impl() const +{ + return _path; +} +#endif + +GHC_INLINE const path::string_type& path::native() const +{ +#ifdef GHC_OS_WINDOWS +#ifdef GHC_USE_WCHAR_T + _native_cache = detail::fromUtf8<string_type>(native_impl()); +#else + _native_cache = native_impl(); +#endif + return _native_cache; +#else + return _path; +#endif +} + +GHC_INLINE const path::value_type* path::c_str() const +{ + return native().c_str(); +} + +GHC_INLINE path::operator path::string_type() const +{ + return native(); +} + +#endif // GHC_EXPAND_IMPL + +template <class EcharT, class traits, class Allocator> +inline std::basic_string<EcharT, traits, Allocator> path::string(const Allocator& a) const +{ + return detail::fromUtf8<std::basic_string<EcharT, traits, Allocator>>(native_impl(), a); +} + +#ifdef GHC_EXPAND_IMPL + +GHC_INLINE std::string path::string() const +{ + return native_impl(); +} + +GHC_INLINE std::wstring path::wstring() const +{ +#ifdef GHC_USE_WCHAR_T + return native(); +#else + return detail::fromUtf8<std::wstring>(native()); +#endif +} + +GHC_INLINE std::string path::u8string() const +{ + return native_impl(); +} + +GHC_INLINE std::u16string path::u16string() const +{ + return detail::fromUtf8<std::u16string>(native_impl()); +} + +GHC_INLINE std::u32string path::u32string() const +{ + return detail::fromUtf8<std::u32string>(native_impl()); +} + +#endif // GHC_EXPAND_IMPL + +//----------------------------------------------------------------------------- +// 30.10.8.4.7, generic format observers +template <class EcharT, class traits, class Allocator> +inline std::basic_string<EcharT, traits, Allocator> path::generic_string(const Allocator& a) const +{ + return detail::fromUtf8<std::basic_string<EcharT, traits, Allocator>>(_path, a); +} + +#ifdef GHC_EXPAND_IMPL + +GHC_INLINE const std::string& path::generic_string() const +{ + return _path; +} + +GHC_INLINE std::wstring path::generic_wstring() const +{ + return detail::fromUtf8<std::wstring>(_path); +} + +GHC_INLINE std::string path::generic_u8string() const +{ + return _path; +} + +GHC_INLINE std::u16string path::generic_u16string() const +{ + return detail::fromUtf8<std::u16string>(_path); +} + +GHC_INLINE std::u32string path::generic_u32string() const +{ + return detail::fromUtf8<std::u32string>(_path); +} + +//----------------------------------------------------------------------------- +// 30.10.8.4.8, compare +GHC_INLINE int path::compare(const path& p) const noexcept +{ + return native().compare(p.native()); +} + +GHC_INLINE int path::compare(const string_type& s) const +{ + return native().compare(path(s).native()); +} + +#ifdef __cpp_lib_string_view +GHC_INLINE int path::compare(std::basic_string_view<value_type> s) const +{ + return native().compare(path(s).native()); +} +#endif + +GHC_INLINE int path::compare(const value_type* s) const +{ + return native().compare(path(s).native()); +} + +//----------------------------------------------------------------------------- +// 30.10.8.4.9, decomposition +GHC_INLINE path path::root_name() const +{ +#ifdef GHC_OS_WINDOWS + if (_path.length() >= 2 && std::toupper(static_cast<unsigned char>(_path[0])) >= 'A' && std::toupper(static_cast<unsigned char>(_path[0])) <= 'Z' && _path[1] == ':') { + return path(_path.substr(0, 2)); + } +#endif + if (_path.length() > 2 && _path[0] == '/' && _path[1] == '/' && _path[2] != '/' && std::isprint(_path[2])) { + impl_string_type::size_type pos = _path.find_first_of("/\\", 3); + if (pos == impl_string_type::npos) { + return path(_path); + } + else { + return path(_path.substr(0, pos)); + } + } + return path(); +} + +GHC_INLINE path path::root_directory() const +{ + path root = root_name(); + if (_path.length() > root._path.length() && _path[root._path.length()] == '/') { + return path("/"); + } + return path(); +} + +GHC_INLINE path path::root_path() const +{ + return root_name().generic_string() + root_directory().generic_string(); +} + +GHC_INLINE path path::relative_path() const +{ + std::string root = root_path()._path; + return path(_path.substr((std::min)(root.length(), _path.length())), generic_format); +} + +GHC_INLINE path path::parent_path() const +{ + if (has_relative_path()) { + if (empty() || begin() == --end()) { + return path(); + } + else { + path pp; + for (string_type s : input_iterator_range<iterator>(begin(), --end())) { + if (s == "/") { + // don't use append to join a path- + pp += s; + } + else { + pp /= s; + } + } + return pp; + } + } + else { + return *this; + } +} + +GHC_INLINE path path::filename() const +{ + return relative_path().empty() ? path() : path(*--end()); +} + +GHC_INLINE path path::stem() const +{ + impl_string_type fn = filename().string(); + if (fn != "." && fn != "..") { + impl_string_type::size_type n = fn.rfind('.'); + if (n != impl_string_type::npos && n != 0) { + return path{fn.substr(0, n)}; + } + } + return path{fn}; +} + +GHC_INLINE path path::extension() const +{ + impl_string_type fn = filename().string(); + impl_string_type::size_type pos = fn.find_last_of('.'); + if (pos == std::string::npos || pos == 0) { + return ""; + } + return fn.substr(pos); +} + +//----------------------------------------------------------------------------- +// 30.10.8.4.10, query +GHC_INLINE bool path::empty() const noexcept +{ + return _path.empty(); +} + +GHC_INLINE bool path::has_root_name() const +{ + return !root_name().empty(); +} + +GHC_INLINE bool path::has_root_directory() const +{ + return !root_directory().empty(); +} + +GHC_INLINE bool path::has_root_path() const +{ + return !root_path().empty(); +} + +GHC_INLINE bool path::has_relative_path() const +{ + return !relative_path().empty(); +} + +GHC_INLINE bool path::has_parent_path() const +{ + return !parent_path().empty(); +} + +GHC_INLINE bool path::has_filename() const +{ + return !filename().empty(); +} + +GHC_INLINE bool path::has_stem() const +{ + return !stem().empty(); +} + +GHC_INLINE bool path::has_extension() const +{ + return !extension().empty(); +} + +GHC_INLINE bool path::is_absolute() const +{ +#ifdef GHC_OS_WINDOWS + return has_root_name() && has_root_directory(); +#else + return has_root_directory(); +#endif +} + +GHC_INLINE bool path::is_relative() const +{ + return !is_absolute(); +} + +//----------------------------------------------------------------------------- +// 30.10.8.4.11, generation +GHC_INLINE path path::lexically_normal() const +{ + path dest; + bool lastDotDot = false; + for (string_type s : *this) { + if (s == ".") { + dest /= ""; + continue; + } + else if (s == ".." && !dest.empty()) { + auto root = root_path(); + if (dest == root) { + continue; + } + else if (*(--dest.end()) != "..") { + if (dest._path.back() == generic_separator) { + dest._path.pop_back(); + } + dest.remove_filename(); + continue; + } + } + if (!(s.empty() && lastDotDot)) { + dest /= s; + } + lastDotDot = s == ".."; + } + if (dest.empty()) { + dest = "."; + } + return dest; +} + +GHC_INLINE path path::lexically_relative(const path& base) const +{ + if (root_name() != base.root_name() || is_absolute() != base.is_absolute() || (!has_root_directory() && base.has_root_directory())) { + return path(); + } + const_iterator a = begin(), b = base.begin(); + while (a != end() && b != base.end() && *a == *b) { + ++a; + ++b; + } + if (a == end() && b == base.end()) { + return path("."); + } + int count = 0; + for (const auto& element : input_iterator_range<const_iterator>(b, base.end())) { + if (element != "." && element != "" && element != "..") { + ++count; + } + else if (element == "..") { + --count; + } + } + if (count < 0) { + return path(); + } + path result; + for (int i = 0; i < count; ++i) { + result /= ".."; + } + for (const auto& element : input_iterator_range<const_iterator>(a, end())) { + result /= element; + } + return result; +} + +GHC_INLINE path path::lexically_proximate(const path& base) const +{ + path result = lexically_relative(base); + return result.empty() ? *this : result; +} + +//----------------------------------------------------------------------------- +// 30.10.8.5, iterators +GHC_INLINE path::iterator::iterator() {} + +GHC_INLINE path::iterator::iterator(const path::impl_string_type::const_iterator& first, const path::impl_string_type::const_iterator& last, const path::impl_string_type::const_iterator& pos) + : _first(first) + , _last(last) + , _iter(pos) +{ + updateCurrent(); + // find the position of a potential root directory slash +#ifdef GHC_OS_WINDOWS + if (_last - _first >= 3 && std::toupper(static_cast<unsigned char>(*first)) >= 'A' && std::toupper(static_cast<unsigned char>(*first)) <= 'Z' && *(first + 1) == ':' && *(first + 2) == '/') { + _root = _first + 2; + } + else +#endif + { + if (_first != _last && *_first == '/') { + if (_last - _first >= 2 && *(_first + 1) == '/' && !(_last - _first >= 3 && *(_first + 2) == '/')) { + _root = increment(_first); + } + else { + _root = _first; + } + } + else { + _root = _last; + } + } +} + +GHC_INLINE path::impl_string_type::const_iterator path::iterator::increment(const path::impl_string_type::const_iterator& pos) const +{ + path::impl_string_type::const_iterator i = pos; + bool fromStart = i == _first; + if (i != _last) { + // we can only sit on a slash if it is a network name or a root + if (*i++ == '/') { + if (i != _last && *i == '/') { + if (fromStart && !(i + 1 != _last && *(i + 1) == '/')) { + // leadind double slashes detected, treat this and the + // following until a slash as one unit + i = std::find(++i, _last, '/'); + } + else { + // skip redundant slashes + while (i != _last && *i == '/') { + ++i; + } + } + } + } + else { + if (fromStart && i != _last && *i == ':') { + ++i; + } + else { + i = std::find(i, _last, '/'); + } + } + } + return i; +} + +GHC_INLINE path::impl_string_type::const_iterator path::iterator::decrement(const path::impl_string_type::const_iterator& pos) const +{ + path::impl_string_type::const_iterator i = pos; + if (i != _first) { + --i; + // if this is now the root slash or the trailing slash, we are done, + // else check for network name + if (i != _root && (pos != _last || *i != '/')) { +#ifdef GHC_OS_WINDOWS + static const std::string seps = "/:"; + i = std::find_first_of(std::reverse_iterator<path::impl_string_type::const_iterator>(i), std::reverse_iterator<path::impl_string_type::const_iterator>(_first), seps.begin(), seps.end()).base(); + if (i > _first && *i == ':') { + i++; + } +#else + i = std::find(std::reverse_iterator<path::impl_string_type::const_iterator>(i), std::reverse_iterator<path::impl_string_type::const_iterator>(_first), '/').base(); +#endif + // Now we have to check if this is a network name + if (i - _first == 2 && *_first == '/' && *(_first + 1) == '/') { + i -= 2; + } + } + } + return i; +} + +GHC_INLINE void path::iterator::updateCurrent() +{ + if (_iter != _first && _iter != _last && (*_iter == '/' && _iter != _root) && (_iter + 1 == _last)) { + _current = ""; + } + else { + _current.assign(_iter, increment(_iter)); + if (_current.generic_string().size() > 1 && _current.generic_string()[0] == '/' && _current.generic_string()[_current.generic_string().size() - 1] == '/') { + // shrink successive slashes to one + _current = "/"; + } + } +} + +GHC_INLINE path::iterator& path::iterator::operator++() +{ + _iter = increment(_iter); + while (_iter != _last && // we didn't reach the end + _iter != _root && // this is not a root position + *_iter == '/' && // we are on a slash + (_iter + 1) != _last // the slash is not the last char + ) { + ++_iter; + } + updateCurrent(); + return *this; +} + +GHC_INLINE path::iterator path::iterator::operator++(int) +{ + path::iterator i{*this}; + ++(*this); + return i; +} + +GHC_INLINE path::iterator& path::iterator::operator--() +{ + _iter = decrement(_iter); + updateCurrent(); + return *this; +} + +GHC_INLINE path::iterator path::iterator::operator--(int) +{ + auto i = *this; + --(*this); + return i; +} + +GHC_INLINE bool path::iterator::operator==(const path::iterator& other) const +{ + return _iter == other._iter; +} + +GHC_INLINE bool path::iterator::operator!=(const path::iterator& other) const +{ + return _iter != other._iter; +} + +GHC_INLINE path::iterator::reference path::iterator::operator*() const +{ + return _current; +} + +GHC_INLINE path::iterator::pointer path::iterator::operator->() const +{ + return &_current; +} + +GHC_INLINE path::iterator path::begin() const +{ + return iterator(_path.begin(), _path.end(), _path.begin()); +} + +GHC_INLINE path::iterator path::end() const +{ + return iterator(_path.begin(), _path.end(), _path.end()); +} + +//----------------------------------------------------------------------------- +// 30.10.8.6, path non-member functions +GHC_INLINE void swap(path& lhs, path& rhs) noexcept +{ + swap(lhs._path, rhs._path); +} + +GHC_INLINE size_t hash_value(const path& p) noexcept +{ + return std::hash<std::string>()(p.generic_string()); +} + +GHC_INLINE bool operator==(const path& lhs, const path& rhs) noexcept +{ + return lhs.generic_string() == rhs.generic_string(); +} + +GHC_INLINE bool operator!=(const path& lhs, const path& rhs) noexcept +{ + return lhs.generic_string() != rhs.generic_string(); +} + +GHC_INLINE bool operator<(const path& lhs, const path& rhs) noexcept +{ + return lhs.generic_string() < rhs.generic_string(); +} + +GHC_INLINE bool operator<=(const path& lhs, const path& rhs) noexcept +{ + return lhs.generic_string() <= rhs.generic_string(); +} + +GHC_INLINE bool operator>(const path& lhs, const path& rhs) noexcept +{ + return lhs.generic_string() > rhs.generic_string(); +} + +GHC_INLINE bool operator>=(const path& lhs, const path& rhs) noexcept +{ + return lhs.generic_string() >= rhs.generic_string(); +} + +GHC_INLINE path operator/(const path& lhs, const path& rhs) +{ + path result(lhs); + result /= rhs; + return result; +} + +#endif // GHC_EXPAND_IMPL + +//----------------------------------------------------------------------------- +// 30.10.8.6.1 path inserter and extractor +template <class charT, class traits> +inline std::basic_ostream<charT, traits>& operator<<(std::basic_ostream<charT, traits>& os, const path& p) +{ + os << "\""; + auto ps = p.string<charT, traits>(); + for (auto c : ps) { + if (c == '"' || c == '\\') { + os << '\\'; + } + os << c; + } + os << "\""; + return os; +} + +template <class charT, class traits> +inline std::basic_istream<charT, traits>& operator>>(std::basic_istream<charT, traits>& is, path& p) +{ + std::basic_string<charT, traits> tmp; + charT c; + is >> c; + if (c == '"') { + auto sf = is.flags(); + is >> std::noskipws; + while (is) { + auto c2 = is.get(); + if (is) { + if (c2 == '\\') { + c2 = is.get(); + if (is) { + tmp += static_cast<charT>(c2); + } + } + else if (c2 == '"') { + break; + } + else { + tmp += static_cast<charT>(c2); + } + } + } + if ((sf & std::ios_base::skipws) == std::ios_base::skipws) { + is >> std::skipws; + } + p = path(tmp); + } + else { + is >> tmp; + p = path(static_cast<charT>(c) + tmp); + } + return is; +} + +#ifdef GHC_EXPAND_IMPL + +//----------------------------------------------------------------------------- +// 30.10.9 Class filesystem_error +GHC_INLINE filesystem_error::filesystem_error(const std::string& what_arg, std::error_code ec) + : std::system_error(ec, what_arg) + , _what_arg(what_arg) + , _ec(ec) +{ +} + +GHC_INLINE filesystem_error::filesystem_error(const std::string& what_arg, const path& p1, std::error_code ec) + : std::system_error(ec, what_arg) + , _what_arg(what_arg) + , _ec(ec) + , _p1(p1) +{ + if (!_p1.empty()) { + _what_arg += ": '" + _p1.u8string() + "'"; + } +} + +GHC_INLINE filesystem_error::filesystem_error(const std::string& what_arg, const path& p1, const path& p2, std::error_code ec) + : std::system_error(ec, what_arg) + , _what_arg(what_arg) + , _ec(ec) + , _p1(p1) + , _p2(p2) +{ + if (!_p1.empty()) { + _what_arg += ": '" + _p1.u8string() + "'"; + } + if (!_p2.empty()) { + _what_arg += ", '" + _p2.u8string() + "'"; + } +} + +GHC_INLINE const path& filesystem_error::path1() const noexcept +{ + return _p1; +} + +GHC_INLINE const path& filesystem_error::path2() const noexcept +{ + return _p2; +} + +GHC_INLINE const char* filesystem_error::what() const noexcept +{ + return _what_arg.c_str(); +} + +//----------------------------------------------------------------------------- +// 30.10.15, filesystem operations +GHC_INLINE path absolute(const path& p) +{ + std::error_code ec; + path result = absolute(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE path absolute(const path& p, std::error_code& ec) +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + if (p.empty()) { + return absolute(current_path(ec), ec) / ""; + } + ULONG size = ::GetFullPathNameW(p.wstring().c_str(), 0, 0, 0); + if (size) { + std::vector<wchar_t> buf(size, 0); + ULONG s2 = GetFullPathNameW(p.wstring().c_str(), size, buf.data(), nullptr); + if (s2 && s2 < size) { + path result = path(std::wstring(buf.data(), s2)); + if (p.filename() == ".") { + result /= "."; + } + return result; + } + } + ec = detail::make_system_error(); + return path(); +#else + path base = current_path(ec); + if (!ec) { + if (p.empty()) { + return base / p; + } + if (p.has_root_name()) { + if (p.has_root_directory()) { + return p; + } + else { + return p.root_name() / base.root_directory() / base.relative_path() / p.relative_path(); + } + } + else { + if (p.has_root_directory()) { + return base.root_name() / p; + } + else { + return base / p; + } + } + } + ec = detail::make_system_error(); + return path(); +#endif +} + +GHC_INLINE path canonical(const path& p) +{ + std::error_code ec; + auto result = canonical(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE path canonical(const path& p, std::error_code& ec) +{ + if (p.empty()) { + ec = detail::make_error_code(detail::portable_error::not_found); + return path(); + } + path work = p.is_absolute() ? p : absolute(p, ec); + path root = work.root_path(); + path result; + + auto fs = status(work, ec); + if (ec) { + return path(); + } + if (fs.type() == file_type::not_found) { + ec = detail::make_error_code(detail::portable_error::not_found); + return path(); + } + bool redo; + do { + redo = false; + result.clear(); + for (auto pe : work) { + if (pe.empty() || pe == ".") { + continue; + } + else if (pe == "..") { + result = result.parent_path(); + continue; + } + else if ((result / pe).string().length() <= root.string().length()) { + result /= pe; + continue; + } + auto sls = symlink_status(result / pe, ec); + if (ec) { + return path(); + } + if (is_symlink(sls)) { + redo = true; + auto target = read_symlink(result / pe, ec); + if (ec) { + return path(); + } + if (target.is_absolute()) { + result = target; + continue; + } + else { + result /= target; + continue; + } + } + else { + result /= pe; + } + } + work = result; + } while (redo); + ec.clear(); + return result; +} + +GHC_INLINE void copy(const path& from, const path& to) +{ + copy(from, to, copy_options::none); +} + +GHC_INLINE void copy(const path& from, const path& to, std::error_code& ec) noexcept +{ + copy(from, to, copy_options::none, ec); +} + +GHC_INLINE void copy(const path& from, const path& to, copy_options options) +{ + std::error_code ec; + copy(from, to, options, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), from, to, ec); + } +} + +GHC_INLINE void copy(const path& from, const path& to, copy_options options, std::error_code& ec) noexcept +{ + std::error_code tec; + file_status fs_from, fs_to; + ec.clear(); + if ((options & (copy_options::skip_symlinks | copy_options::copy_symlinks | copy_options::create_symlinks)) != copy_options::none) { + fs_from = symlink_status(from, ec); + } + else { + fs_from = status(from, ec); + } + if (!exists(fs_from)) { + if (!ec) { + ec = detail::make_error_code(detail::portable_error::not_found); + } + return; + } + if ((options & (copy_options::skip_symlinks | copy_options::create_symlinks)) != copy_options::none) { + fs_to = symlink_status(to, tec); + } + else { + fs_to = status(to, tec); + } + if (is_other(fs_from) || is_other(fs_to) || (is_directory(fs_from) && is_regular_file(fs_to)) || (exists(fs_to) && equivalent(from, to, ec))) { + ec = detail::make_error_code(detail::portable_error::invalid_argument); + } + else if (is_symlink(fs_from)) { + if ((options & copy_options::skip_symlinks) == copy_options::none) { + if (!exists(fs_to) && (options & copy_options::copy_symlinks) != copy_options::none) { + copy_symlink(from, to, ec); + } + else { + ec = detail::make_error_code(detail::portable_error::invalid_argument); + } + } + } + else if (is_regular_file(fs_from)) { + if ((options & copy_options::directories_only) == copy_options::none) { + if ((options & copy_options::create_symlinks) != copy_options::none) { + create_symlink(from.is_absolute() ? from : canonical(from, ec), to, ec); + } + else if ((options & copy_options::create_hard_links) != copy_options::none) { + create_hard_link(from, to, ec); + } + else if (is_directory(fs_to)) { + copy_file(from, to / from.filename(), options, ec); + } + else { + copy_file(from, to, options, ec); + } + } + } +#ifdef LWG_2682_BEHAVIOUR + else if (is_directory(fs_from) && (options & copy_options::create_symlinks) != copy_options::none) { + ec = detail::make_error_code(detail::portable_error::is_a_directory); + } +#endif + else if (is_directory(fs_from) && (options == copy_options::none || (options & copy_options::recursive) != copy_options::none)) { + if (!exists(fs_to)) { + create_directory(to, from, ec); + if (ec) { + return; + } + } + for (auto iter = directory_iterator(from, ec); iter != directory_iterator(); iter.increment(ec)) { + if (!ec) { + copy(iter->path(), to / iter->path().filename(), options | static_cast<copy_options>(0x8000), ec); + } + if (ec) { + return; + } + } + } + return; +} + +GHC_INLINE bool copy_file(const path& from, const path& to) +{ + return copy_file(from, to, copy_options::none); +} + +GHC_INLINE bool copy_file(const path& from, const path& to, std::error_code& ec) noexcept +{ + return copy_file(from, to, copy_options::none, ec); +} + +GHC_INLINE bool copy_file(const path& from, const path& to, copy_options option) +{ + std::error_code ec; + auto result = copy_file(from, to, option, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), from, to, ec); + } + return result; +} + +GHC_INLINE bool copy_file(const path& from, const path& to, copy_options options, std::error_code& ec) noexcept +{ + std::error_code tecf, tect; + auto sf = status(from, tecf); + auto st = status(to, tect); + bool overwrite = false; + ec.clear(); + if (!is_regular_file(sf)) { + ec = tecf; + return false; + } + if (exists(st) && (!is_regular_file(st) || equivalent(from, to, ec) || (options & (copy_options::skip_existing | copy_options::overwrite_existing | copy_options::update_existing)) == copy_options::none)) { + ec = tect ? tect : detail::make_error_code(detail::portable_error::exists); + return false; + } + if (exists(st)) { + if ((options & copy_options::update_existing) == copy_options::update_existing) { + auto from_time = last_write_time(from, ec); + if (ec) { + ec = detail::make_system_error(); + return false; + } + auto to_time = last_write_time(to, ec); + if (ec) { + ec = detail::make_system_error(); + return false; + } + if (from_time <= to_time) { + return false; + } + } + overwrite = true; + } +#ifdef GHC_OS_WINDOWS + if (!::CopyFileW(detail::fromUtf8<std::wstring>(from.u8string()).c_str(), detail::fromUtf8<std::wstring>(to.u8string()).c_str(), !overwrite)) { + ec = detail::make_system_error(); + return false; + } + return true; +#else + std::vector<char> buffer(16384, '\0'); + int in = -1, out = -1; + if ((in = ::open(from.c_str(), O_RDONLY)) < 0) { + ec = detail::make_system_error(); + return false; + } + std::shared_ptr<void> guard_in(nullptr, [in](void*) { ::close(in); }); + int mode = O_CREAT | O_WRONLY | O_TRUNC; + if (!overwrite) { + mode |= O_EXCL; + } + if ((out = ::open(to.c_str(), mode, static_cast<int>(sf.permissions() & perms::all))) < 0) { + ec = detail::make_system_error(); + return false; + } + std::shared_ptr<void> guard_out(nullptr, [out](void*) { ::close(out); }); + ssize_t br, bw; + while ((br = ::read(in, buffer.data(), buffer.size())) > 0) { + ssize_t offset = 0; + do { + if ((bw = ::write(out, buffer.data() + offset, static_cast<size_t>(br))) > 0) { + br -= bw; + offset += bw; + } + else if (bw < 0) { + ec = detail::make_system_error(); + return false; + } + } while (br); + } + return true; +#endif +} + +GHC_INLINE void copy_symlink(const path& existing_symlink, const path& new_symlink) +{ + std::error_code ec; + copy_symlink(existing_symlink, new_symlink, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), existing_symlink, new_symlink, ec); + } +} + +GHC_INLINE void copy_symlink(const path& existing_symlink, const path& new_symlink, std::error_code& ec) noexcept +{ + ec.clear(); + auto to = read_symlink(existing_symlink, ec); + if (!ec) { + if (exists(to, ec) && is_directory(to, ec)) { + create_directory_symlink(to, new_symlink, ec); + } + else { + create_symlink(to, new_symlink, ec); + } + } +} + +GHC_INLINE bool create_directories(const path& p) +{ + std::error_code ec; + auto result = create_directories(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE bool create_directories(const path& p, std::error_code& ec) noexcept +{ + path current; + ec.clear(); + bool didCreate = false; + for (path::string_type part : p) { + current /= part; + if (current != p.root_name() && current != p.root_path()) { + std::error_code tec; + auto fs = status(current, tec); + if (tec && fs.type() != file_type::not_found) { + ec = tec; + return false; + } + if (!exists(fs)) { + create_directory(current, ec); + if (ec) { + std::error_code tmp_ec; + if (is_directory(current, tmp_ec)) { + ec.clear(); + } else { + return false; + } + } + didCreate = true; + } +#ifndef LWG_2935_BEHAVIOUR + else if (!is_directory(fs)) { + ec = detail::make_error_code(detail::portable_error::exists); + return false; + } +#endif + } + } + return didCreate; +} + +GHC_INLINE bool create_directory(const path& p) +{ + std::error_code ec; + auto result = create_directory(p, path(), ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE bool create_directory(const path& p, std::error_code& ec) noexcept +{ + return create_directory(p, path(), ec); +} + +GHC_INLINE bool create_directory(const path& p, const path& attributes) +{ + std::error_code ec; + auto result = create_directory(p, attributes, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE bool create_directory(const path& p, const path& attributes, std::error_code& ec) noexcept +{ + std::error_code tec; + ec.clear(); + auto fs = status(p, tec); +#ifdef LWG_2935_BEHAVIOUR + if (status_known(fs) && exists(fs)) { + return false; + } +#else + if (status_known(fs) && exists(fs) && is_directory(fs)) { + return false; + } +#endif +#ifdef GHC_OS_WINDOWS + if (!attributes.empty()) { + if (!::CreateDirectoryExW(detail::fromUtf8<std::wstring>(attributes.u8string()).c_str(), detail::fromUtf8<std::wstring>(p.u8string()).c_str(), NULL)) { + ec = detail::make_system_error(); + return false; + } + } + else if (!::CreateDirectoryW(detail::fromUtf8<std::wstring>(p.u8string()).c_str(), NULL)) { + ec = detail::make_system_error(); + return false; + } +#else + ::mode_t attribs = static_cast<mode_t>(perms::all); + if (!attributes.empty()) { + struct ::stat fileStat; + if (::stat(attributes.c_str(), &fileStat) != 0) { + ec = detail::make_system_error(); + return false; + } + attribs = fileStat.st_mode; + } + if (::mkdir(p.c_str(), attribs) != 0) { + ec = detail::make_system_error(); + return false; + } +#endif + return true; +} + +GHC_INLINE void create_directory_symlink(const path& to, const path& new_symlink) +{ + std::error_code ec; + create_directory_symlink(to, new_symlink, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), to, new_symlink, ec); + } +} + +GHC_INLINE void create_directory_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept +{ + detail::create_symlink(to, new_symlink, true, ec); +} + +GHC_INLINE void create_hard_link(const path& to, const path& new_hard_link) +{ + std::error_code ec; + create_hard_link(to, new_hard_link, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), to, new_hard_link, ec); + } +} + +GHC_INLINE void create_hard_link(const path& to, const path& new_hard_link, std::error_code& ec) noexcept +{ + detail::create_hardlink(to, new_hard_link, ec); +} + +GHC_INLINE void create_symlink(const path& to, const path& new_symlink) +{ + std::error_code ec; + create_symlink(to, new_symlink, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), to, new_symlink, ec); + } +} + +GHC_INLINE void create_symlink(const path& to, const path& new_symlink, std::error_code& ec) noexcept +{ + detail::create_symlink(to, new_symlink, false, ec); +} + +GHC_INLINE path current_path() +{ + std::error_code ec; + auto result = current_path(ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), ec); + } + return result; +} + +GHC_INLINE path current_path(std::error_code& ec) +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + DWORD pathlen = ::GetCurrentDirectoryW(0, 0); + std::unique_ptr<wchar_t[]> buffer(new wchar_t[size_t(pathlen) + 1]); + if (::GetCurrentDirectoryW(pathlen, buffer.get()) == 0) { + ec = detail::make_system_error(); + return path(); + } + return path(std::wstring(buffer.get()), path::native_format); +#else + size_t pathlen = static_cast<size_t>(std::max(int(::pathconf(".", _PC_PATH_MAX)), int(PATH_MAX))); + std::unique_ptr<char[]> buffer(new char[pathlen + 1]); + if (::getcwd(buffer.get(), pathlen) == nullptr) { + ec = detail::make_system_error(); + return path(); + } + return path(buffer.get()); +#endif +} + +GHC_INLINE void current_path(const path& p) +{ + std::error_code ec; + current_path(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } +} + +GHC_INLINE void current_path(const path& p, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + if (!::SetCurrentDirectoryW(detail::fromUtf8<std::wstring>(p.u8string()).c_str())) { + ec = detail::make_system_error(); + } +#else + if (::chdir(p.string().c_str()) == -1) { + ec = detail::make_system_error(); + } +#endif +} + +GHC_INLINE bool exists(file_status s) noexcept +{ + return status_known(s) && s.type() != file_type::not_found; +} + +GHC_INLINE bool exists(const path& p) +{ + return exists(status(p)); +} + +GHC_INLINE bool exists(const path& p, std::error_code& ec) noexcept +{ + file_status s = status(p, ec); + if (status_known(s)) { + ec.clear(); + } + return exists(s); +} + +GHC_INLINE bool equivalent(const path& p1, const path& p2) +{ + std::error_code ec; + bool result = equivalent(p1, p2, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p1, p2, ec); + } + return result; +} + +GHC_INLINE bool equivalent(const path& p1, const path& p2, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + std::shared_ptr<void> file1(::CreateFileW(p1.wstring().c_str(), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); + auto e1 = ::GetLastError(); + std::shared_ptr<void> file2(::CreateFileW(p2.wstring().c_str(), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); + if (file1.get() == INVALID_HANDLE_VALUE || file2.get() == INVALID_HANDLE_VALUE) { +#ifdef LWG_2937_BEHAVIOUR + ec = detail::make_system_error(e1 ? e1 : ::GetLastError()); +#else + if (file1 == file2) { + ec = detail::make_system_error(e1 ? e1 : ::GetLastError()); + } +#endif + return false; + } + BY_HANDLE_FILE_INFORMATION inf1, inf2; + if (!::GetFileInformationByHandle(file1.get(), &inf1)) { + ec = detail::make_system_error(); + return false; + } + if (!::GetFileInformationByHandle(file2.get(), &inf2)) { + ec = detail::make_system_error(); + return false; + } + return inf1.ftLastWriteTime.dwLowDateTime == inf2.ftLastWriteTime.dwLowDateTime && inf1.ftLastWriteTime.dwHighDateTime == inf2.ftLastWriteTime.dwHighDateTime && inf1.nFileIndexHigh == inf2.nFileIndexHigh && inf1.nFileIndexLow == inf2.nFileIndexLow && + inf1.nFileSizeHigh == inf2.nFileSizeHigh && inf1.nFileSizeLow == inf2.nFileSizeLow && inf1.dwVolumeSerialNumber == inf2.dwVolumeSerialNumber; +#else + struct ::stat s1, s2; + auto rc1 = ::stat(p1.c_str(), &s1); + auto e1 = errno; + auto rc2 = ::stat(p2.c_str(), &s2); + if (rc1 || rc2) { +#ifdef LWG_2937_BEHAVIOUR + ec = detail::make_system_error(e1 ? e1 : errno); +#else + if (rc1 && rc2) { + ec = detail::make_system_error(e1 ? e1 : errno); + } +#endif + return false; + } + return s1.st_dev == s2.st_dev && s1.st_ino == s2.st_ino && s1.st_size == s2.st_size && s1.st_mtime == s2.st_mtime; +#endif +} + +GHC_INLINE uintmax_t file_size(const path& p) +{ + std::error_code ec; + auto result = file_size(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE uintmax_t file_size(const path& p, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + WIN32_FILE_ATTRIBUTE_DATA attr; + if (!GetFileAttributesExW(detail::fromUtf8<std::wstring>(p.u8string()).c_str(), GetFileExInfoStandard, &attr)) { + ec = detail::make_system_error(); + return static_cast<uintmax_t>(-1); + } + return static_cast<uintmax_t>(attr.nFileSizeHigh) << (sizeof(attr.nFileSizeHigh) * 8) | attr.nFileSizeLow; +#else + struct ::stat fileStat; + if (::stat(p.c_str(), &fileStat) == -1) { + ec = detail::make_system_error(); + return static_cast<uintmax_t>(-1); + } + return static_cast<uintmax_t>(fileStat.st_size); +#endif +} + +GHC_INLINE uintmax_t hard_link_count(const path& p) +{ + std::error_code ec; + auto result = hard_link_count(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE uintmax_t hard_link_count(const path& p, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + uintmax_t result = static_cast<uintmax_t>(-1); + std::shared_ptr<void> file(::CreateFileW(p.wstring().c_str(), 0, FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0), CloseHandle); + BY_HANDLE_FILE_INFORMATION inf; + if (file.get() == INVALID_HANDLE_VALUE) { + ec = detail::make_system_error(); + } + else { + if (!::GetFileInformationByHandle(file.get(), &inf)) { + ec = detail::make_system_error(); + } + else { + result = inf.nNumberOfLinks; + } + } + return result; +#else + uintmax_t result = 0; + file_status fs = detail::status_ex(p, ec, nullptr, nullptr, &result, nullptr); + if (fs.type() == file_type::not_found) { + ec = detail::make_error_code(detail::portable_error::not_found); + } + return ec ? static_cast<uintmax_t>(-1) : result; +#endif +} + +GHC_INLINE bool is_block_file(file_status s) noexcept +{ + return s.type() == file_type::block; +} + +GHC_INLINE bool is_block_file(const path& p) +{ + return is_block_file(status(p)); +} + +GHC_INLINE bool is_block_file(const path& p, std::error_code& ec) noexcept +{ + return is_block_file(status(p, ec)); +} + +GHC_INLINE bool is_character_file(file_status s) noexcept +{ + return s.type() == file_type::character; +} + +GHC_INLINE bool is_character_file(const path& p) +{ + return is_character_file(status(p)); +} + +GHC_INLINE bool is_character_file(const path& p, std::error_code& ec) noexcept +{ + return is_character_file(status(p, ec)); +} + +GHC_INLINE bool is_directory(file_status s) noexcept +{ + return s.type() == file_type::directory; +} + +GHC_INLINE bool is_directory(const path& p) +{ + return is_directory(status(p)); +} + +GHC_INLINE bool is_directory(const path& p, std::error_code& ec) noexcept +{ + return is_directory(status(p, ec)); +} + +GHC_INLINE bool is_empty(const path& p) +{ + if (is_directory(p)) { + return directory_iterator(p) == directory_iterator(); + } + else { + return file_size(p) == 0; + } +} + +GHC_INLINE bool is_empty(const path& p, std::error_code& ec) noexcept +{ + auto fs = status(p, ec); + if (ec) { + return false; + } + if (is_directory(fs)) { + directory_iterator iter(p, ec); + if (ec) { + return false; + } + return iter == directory_iterator(); + } + else { + auto sz = file_size(p, ec); + if (ec) { + return false; + } + return sz == 0; + } +} + +GHC_INLINE bool is_fifo(file_status s) noexcept +{ + return s.type() == file_type::fifo; +} + +GHC_INLINE bool is_fifo(const path& p) +{ + return is_fifo(status(p)); +} + +GHC_INLINE bool is_fifo(const path& p, std::error_code& ec) noexcept +{ + return is_fifo(status(p, ec)); +} + +GHC_INLINE bool is_other(file_status s) noexcept +{ + return exists(s) && !is_regular_file(s) && !is_directory(s) && !is_symlink(s); +} + +GHC_INLINE bool is_other(const path& p) +{ + return is_other(status(p)); +} + +GHC_INLINE bool is_other(const path& p, std::error_code& ec) noexcept +{ + return is_other(status(p, ec)); +} + +GHC_INLINE bool is_regular_file(file_status s) noexcept +{ + return s.type() == file_type::regular; +} + +GHC_INLINE bool is_regular_file(const path& p) +{ + return is_regular_file(status(p)); +} + +GHC_INLINE bool is_regular_file(const path& p, std::error_code& ec) noexcept +{ + return is_regular_file(status(p, ec)); +} + +GHC_INLINE bool is_socket(file_status s) noexcept +{ + return s.type() == file_type::socket; +} + +GHC_INLINE bool is_socket(const path& p) +{ + return is_socket(status(p)); +} + +GHC_INLINE bool is_socket(const path& p, std::error_code& ec) noexcept +{ + return is_socket(status(p, ec)); +} + +GHC_INLINE bool is_symlink(file_status s) noexcept +{ + return s.type() == file_type::symlink; +} + +GHC_INLINE bool is_symlink(const path& p) +{ + return is_symlink(symlink_status(p)); +} + +GHC_INLINE bool is_symlink(const path& p, std::error_code& ec) noexcept +{ + return is_symlink(symlink_status(p, ec)); +} + +GHC_INLINE file_time_type last_write_time(const path& p) +{ + std::error_code ec; + auto result = last_write_time(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE file_time_type last_write_time(const path& p, std::error_code& ec) noexcept +{ + time_t result = 0; + ec.clear(); + file_status fs = detail::status_ex(p, ec, nullptr, nullptr, nullptr, &result); + return ec ? (file_time_type::min)() : std::chrono::system_clock::from_time_t(result); +} + +GHC_INLINE void last_write_time(const path& p, file_time_type new_time) +{ + std::error_code ec; + last_write_time(p, new_time, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } +} + +GHC_INLINE void last_write_time(const path& p, file_time_type new_time, std::error_code& ec) noexcept +{ + ec.clear(); + auto d = new_time.time_since_epoch(); +#ifdef GHC_OS_WINDOWS + std::shared_ptr<void> file(::CreateFileW(p.wstring().c_str(), FILE_WRITE_ATTRIBUTES, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL), ::CloseHandle); + FILETIME ft; + auto tt = std::chrono::duration_cast<std::chrono::microseconds>(d).count() * 10 + 116444736000000000; + ft.dwLowDateTime = static_cast<DWORD>(tt); + ft.dwHighDateTime = static_cast<DWORD>(tt >> 32); + if (!::SetFileTime(file.get(), 0, 0, &ft)) { + ec = detail::make_system_error(); + } +#elif defined(GHC_OS_MACOS) +#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED +#if __MAC_OS_X_VERSION_MIN_REQUIRED < 101300 + struct ::stat fs; + if (::stat(p.c_str(), &fs) == 0) { + struct ::timeval tv[2]; + tv[0].tv_sec = fs.st_atimespec.tv_sec; + tv[0].tv_usec = static_cast<int>(fs.st_atimespec.tv_nsec / 1000); + tv[1].tv_sec = std::chrono::duration_cast<std::chrono::seconds>(d).count(); + tv[1].tv_usec = static_cast<int>(std::chrono::duration_cast<std::chrono::microseconds>(d).count() % 1000000); + if (::utimes(p.c_str(), tv) == 0) { + return; + } + } + ec = detail::make_system_error(); + return; +#else + struct ::timespec times[2]; + times[0].tv_sec = 0; + times[0].tv_nsec = UTIME_OMIT; + times[1].tv_sec = std::chrono::duration_cast<std::chrono::seconds>(d).count(); + times[1].tv_nsec = std::chrono::duration_cast<std::chrono::nanoseconds>(d).count() % 1000000000; + if (::utimensat(AT_FDCWD, p.c_str(), times, AT_SYMLINK_NOFOLLOW) != 0) { + ec = detail::make_system_error(); + } + return; +#endif +#endif +#else + struct ::timespec times[2]; + times[0].tv_sec = 0; + times[0].tv_nsec = UTIME_OMIT; + times[1].tv_sec = static_cast<decltype(times[1].tv_sec)>(std::chrono::duration_cast<std::chrono::seconds>(d).count()); + times[1].tv_nsec = static_cast<decltype(times[1].tv_nsec)>(std::chrono::duration_cast<std::chrono::nanoseconds>(d).count() % 1000000000); + if (::utimensat(AT_FDCWD, p.c_str(), times, AT_SYMLINK_NOFOLLOW) != 0) { + ec = detail::make_system_error(); + } + return; +#endif +} + +GHC_INLINE void permissions(const path& p, perms prms, perm_options opts) +{ + std::error_code ec; + permissions(p, prms, opts, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } +} + +GHC_INLINE void permissions(const path& p, perms prms, std::error_code& ec) noexcept +{ + permissions(p, prms, perm_options::replace, ec); +} + +GHC_INLINE void permissions(const path& p, perms prms, perm_options opts, std::error_code& ec) +{ + if (static_cast<int>(opts & (perm_options::replace | perm_options::add | perm_options::remove)) == 0) { + ec = detail::make_error_code(detail::portable_error::invalid_argument); + return; + } + auto fs = symlink_status(p, ec); + if ((opts & perm_options::replace) != perm_options::replace) { + if ((opts & perm_options::add) == perm_options::add) { + prms = fs.permissions() | prms; + } + else { + prms = fs.permissions() & ~prms; + } + } +#ifdef GHC_OS_WINDOWS +#ifdef __GNUC__ + auto oldAttr = GetFileAttributesW(p.wstring().c_str()); + if (oldAttr != INVALID_FILE_ATTRIBUTES) { + DWORD newAttr = ((prms & perms::owner_write) == perms::owner_write) ? oldAttr & ~(static_cast<DWORD>(FILE_ATTRIBUTE_READONLY)) : oldAttr | FILE_ATTRIBUTE_READONLY; + if (oldAttr == newAttr || SetFileAttributesW(p.wstring().c_str(), newAttr)) { + return; + } + } + ec = detail::make_system_error(); +#else + int mode = 0; + if ((prms & perms::owner_read) == perms::owner_read) { + mode |= _S_IREAD; + } + if ((prms & perms::owner_write) == perms::owner_write) { + mode |= _S_IWRITE; + } + if (::_wchmod(p.wstring().c_str(), mode) != 0) { + ec = detail::make_system_error(); + } +#endif +#else + if ((opts & perm_options::nofollow) != perm_options::nofollow) { + if (::chmod(p.c_str(), static_cast<mode_t>(prms)) != 0) { + ec = detail::make_system_error(); + } + } +#endif +} + +GHC_INLINE path proximate(const path& p, std::error_code& ec) +{ + return proximate(p, current_path(), ec); +} + +GHC_INLINE path proximate(const path& p, const path& base) +{ + return weakly_canonical(p).lexically_proximate(weakly_canonical(base)); +} + +GHC_INLINE path proximate(const path& p, const path& base, std::error_code& ec) +{ + return weakly_canonical(p, ec).lexically_proximate(weakly_canonical(base, ec)); +} + +GHC_INLINE path read_symlink(const path& p) +{ + std::error_code ec; + auto result = read_symlink(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE path read_symlink(const path& p, std::error_code& ec) +{ + file_status fs = symlink_status(p, ec); + if (fs.type() != file_type::symlink) { + ec = detail::make_error_code(detail::portable_error::invalid_argument); + return path(); + } + auto result = detail::resolveSymlink(p, ec); + return ec ? path() : result; +} + +GHC_INLINE path relative(const path& p, std::error_code& ec) +{ + return relative(p, current_path(ec), ec); +} + +GHC_INLINE path relative(const path& p, const path& base) +{ + return weakly_canonical(p).lexically_relative(weakly_canonical(base)); +} + +GHC_INLINE path relative(const path& p, const path& base, std::error_code& ec) +{ + return weakly_canonical(p, ec).lexically_relative(weakly_canonical(base, ec)); +} + +GHC_INLINE bool remove(const path& p) +{ + std::error_code ec; + auto result = remove(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE bool remove(const path& p, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + std::wstring np = detail::fromUtf8<std::wstring>(p.u8string()); + DWORD attr = GetFileAttributesW(np.c_str()); + if (attr == INVALID_FILE_ATTRIBUTES) { + auto error = ::GetLastError(); + if (error == ERROR_FILE_NOT_FOUND || error == ERROR_PATH_NOT_FOUND) { + return false; + } + ec = detail::make_system_error(error); + } + if (!ec) { + if (attr & FILE_ATTRIBUTE_DIRECTORY) { + if (!RemoveDirectoryW(np.c_str())) { + ec = detail::make_system_error(); + } + } + else { + if (!DeleteFileW(np.c_str())) { + ec = detail::make_system_error(); + } + } + } +#else + if (::remove(p.c_str()) == -1) { + auto error = errno; + if (error == ENOENT) { + return false; + } + ec = detail::make_system_error(); + } +#endif + return ec ? false : true; +} + +GHC_INLINE uintmax_t remove_all(const path& p) +{ + std::error_code ec; + auto result = remove_all(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE uintmax_t remove_all(const path& p, std::error_code& ec) noexcept +{ + ec.clear(); + uintmax_t count = 0; + if (p == "/") { + ec = detail::make_error_code(detail::portable_error::not_supported); + return static_cast<uintmax_t>(-1); + } + std::error_code tec; + auto fs = status(p, tec); + if (exists(fs) && is_directory(fs)) { + for (auto iter = directory_iterator(p, ec); iter != directory_iterator(); iter.increment(ec)) { + if (ec) { + break; + } + if (!iter->is_symlink() && iter->is_directory()) { + count += remove_all(iter->path(), ec); + if (ec) { + return static_cast<uintmax_t>(-1); + } + } + else { + remove(iter->path(), ec); + if (ec) { + return static_cast<uintmax_t>(-1); + } + ++count; + } + } + } + if (!ec) { + if (remove(p, ec)) { + ++count; + } + } + if (ec) { + return static_cast<uintmax_t>(-1); + } + return count; +} + +GHC_INLINE void rename(const path& from, const path& to) +{ + std::error_code ec; + rename(from, to, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), from, to, ec); + } +} + +GHC_INLINE void rename(const path& from, const path& to, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + if (from != to) { + if (!MoveFileExW(detail::fromUtf8<std::wstring>(from.u8string()).c_str(), detail::fromUtf8<std::wstring>(to.u8string()).c_str(), (DWORD)MOVEFILE_REPLACE_EXISTING)) { + ec = detail::make_system_error(); + } + } +#else + if (from != to) { + if (::rename(from.c_str(), to.c_str()) != 0) { + ec = detail::make_system_error(); + } + } +#endif +} + +GHC_INLINE void resize_file(const path& p, uintmax_t size) +{ + std::error_code ec; + resize_file(p, size, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } +} + +GHC_INLINE void resize_file(const path& p, uintmax_t size, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + LARGE_INTEGER lisize; + lisize.QuadPart = static_cast<LONGLONG>(size); + if(lisize.QuadPart < 0) { +#ifdef ERROR_FILE_TOO_LARGE + ec = detail::make_system_error(ERROR_FILE_TOO_LARGE); +#else + ec = detail::make_system_error(223); +#endif + return; + } + std::shared_ptr<void> file(CreateFileW(detail::fromUtf8<std::wstring>(p.u8string()).c_str(), GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL), CloseHandle); + if (file.get() == INVALID_HANDLE_VALUE) { + ec = detail::make_system_error(); + } + else if (SetFilePointerEx(file.get(), lisize, NULL, FILE_BEGIN) == 0 || SetEndOfFile(file.get()) == 0) { + ec = detail::make_system_error(); + } +#else + if (::truncate(p.c_str(), static_cast<off_t>(size)) != 0) { + ec = detail::make_system_error(); + } +#endif +} + +GHC_INLINE space_info space(const path& p) +{ + std::error_code ec; + auto result = space(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE space_info space(const path& p, std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + ULARGE_INTEGER freeBytesAvailableToCaller = {0, 0}; + ULARGE_INTEGER totalNumberOfBytes = {0, 0}; + ULARGE_INTEGER totalNumberOfFreeBytes = {0, 0}; + if (!GetDiskFreeSpaceExW(detail::fromUtf8<std::wstring>(p.u8string()).c_str(), &freeBytesAvailableToCaller, &totalNumberOfBytes, &totalNumberOfFreeBytes)) { + ec = detail::make_system_error(); + return {static_cast<uintmax_t>(-1), static_cast<uintmax_t>(-1), static_cast<uintmax_t>(-1)}; + } + return {static_cast<uintmax_t>(totalNumberOfBytes.QuadPart), static_cast<uintmax_t>(totalNumberOfFreeBytes.QuadPart), static_cast<uintmax_t>(freeBytesAvailableToCaller.QuadPart)}; +#elif !defined(__ANDROID__) || __ANDROID_API__ >= 19 + struct ::statvfs sfs; + if (::statvfs(p.c_str(), &sfs) != 0) { + ec = detail::make_system_error(); + return {static_cast<uintmax_t>(-1), static_cast<uintmax_t>(-1), static_cast<uintmax_t>(-1)}; + } + return {static_cast<uintmax_t>(sfs.f_blocks * sfs.f_frsize), static_cast<uintmax_t>(sfs.f_bfree * sfs.f_frsize), static_cast<uintmax_t>(sfs.f_bavail * sfs.f_frsize)}; +#else + (void)p; + ec = detail::make_error_code(detail::portable_error::not_supported); + return {static_cast<uintmax_t>(-1), static_cast<uintmax_t>(-1), static_cast<uintmax_t>(-1)}; +#endif +} + +GHC_INLINE file_status status(const path& p) +{ + std::error_code ec; + auto result = status(p, ec); + if (result.type() == file_type::none) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE file_status status(const path& p, std::error_code& ec) noexcept +{ + return detail::status_ex(p, ec); +} + +GHC_INLINE bool status_known(file_status s) noexcept +{ + return s.type() != file_type::none; +} + +GHC_INLINE file_status symlink_status(const path& p) +{ + std::error_code ec; + auto result = symlink_status(p, ec); + if (result.type() == file_type::none) { + throw filesystem_error(detail::systemErrorText(ec.value()), ec); + } + return result; +} + +GHC_INLINE file_status symlink_status(const path& p, std::error_code& ec) noexcept +{ + return detail::symlink_status_ex(p, ec); +} + +GHC_INLINE path temp_directory_path() +{ + std::error_code ec; + path result = temp_directory_path(ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), ec); + } + return result; +} + +GHC_INLINE path temp_directory_path(std::error_code& ec) noexcept +{ + ec.clear(); +#ifdef GHC_OS_WINDOWS + wchar_t buffer[512]; + auto rc = GetTempPathW(511, buffer); + if (!rc || rc > 511) { + ec = detail::make_system_error(); + return path(); + } + return path(std::wstring(buffer)); +#else + static const char* temp_vars[] = {"TMPDIR", "TMP", "TEMP", "TEMPDIR", nullptr}; + const char* temp_path = nullptr; + for (auto temp_name = temp_vars; *temp_name != nullptr; ++temp_name) { + temp_path = std::getenv(*temp_name); + if (temp_path) { + return path(temp_path); + } + } + return path("/tmp"); +#endif +} + +GHC_INLINE path weakly_canonical(const path& p) +{ + std::error_code ec; + auto result = weakly_canonical(p, ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), p, ec); + } + return result; +} + +GHC_INLINE path weakly_canonical(const path& p, std::error_code& ec) noexcept +{ + path result; + ec.clear(); + bool scan = true; + for (auto pe : p) { + if (scan) { + std::error_code tec; + if (exists(result / pe, tec)) { + result /= pe; + } + else { + if (ec) { + return path(); + } + scan = false; + if (!result.empty()) { + result = canonical(result, ec) / pe; + if (ec) { + break; + } + } + else { + result /= pe; + } + } + } + else { + result /= pe; + } + } + if (scan) { + if (!result.empty()) { + result = canonical(result, ec); + } + } + return ec ? path() : result.lexically_normal(); +} + +//----------------------------------------------------------------------------- +// 30.10.11 class file_status +// 30.10.11.1 constructors and destructor +GHC_INLINE file_status::file_status() noexcept + : file_status(file_type::none) +{ +} + +GHC_INLINE file_status::file_status(file_type ft, perms prms) noexcept + : _type(ft) + , _perms(prms) +{ +} + +GHC_INLINE file_status::file_status(const file_status& other) noexcept + : _type(other._type) + , _perms(other._perms) +{ +} + +GHC_INLINE file_status::file_status(file_status&& other) noexcept + : _type(other._type) + , _perms(other._perms) +{ +} + +GHC_INLINE file_status::~file_status() {} + +// assignments: +GHC_INLINE file_status& file_status::operator=(const file_status& rhs) noexcept +{ + _type = rhs._type; + _perms = rhs._perms; + return *this; +} + +GHC_INLINE file_status& file_status::operator=(file_status&& rhs) noexcept +{ + _type = rhs._type; + _perms = rhs._perms; + return *this; +} + +// 30.10.11.3 modifiers +GHC_INLINE void file_status::type(file_type ft) noexcept +{ + _type = ft; +} + +GHC_INLINE void file_status::permissions(perms prms) noexcept +{ + _perms = prms; +} + +// 30.10.11.2 observers +GHC_INLINE file_type file_status::type() const noexcept +{ + return _type; +} + +GHC_INLINE perms file_status::permissions() const noexcept +{ + return _perms; +} + +//----------------------------------------------------------------------------- +// 30.10.12 class directory_entry +// 30.10.12.1 constructors and destructor +// directory_entry::directory_entry() noexcept = default; +// directory_entry::directory_entry(const directory_entry&) = default; +// directory_entry::directory_entry(directory_entry&&) noexcept = default; +GHC_INLINE directory_entry::directory_entry(const filesystem::path& p) + : _path(p) + , _file_size(0) +#ifndef GHC_OS_WINDOWS + , _hard_link_count(0) +#endif + , _last_write_time(0) +{ + refresh(); +} + +GHC_INLINE directory_entry::directory_entry(const filesystem::path& p, std::error_code& ec) + : _path(p) + , _file_size(0) +#ifndef GHC_OS_WINDOWS + , _hard_link_count(0) +#endif + , _last_write_time(0) +{ + refresh(ec); +} + +GHC_INLINE directory_entry::~directory_entry() {} + +// assignments: +// directory_entry& directory_entry::operator=(const directory_entry&) = default; +// directory_entry& directory_entry::operator=(directory_entry&&) noexcept = default; + +// 30.10.12.2 directory_entry modifiers +GHC_INLINE void directory_entry::assign(const filesystem::path& p) +{ + _path = p; + refresh(); +} + +GHC_INLINE void directory_entry::assign(const filesystem::path& p, std::error_code& ec) +{ + _path = p; + refresh(ec); +} + +GHC_INLINE void directory_entry::replace_filename(const filesystem::path& p) +{ + _path.replace_filename(p); + refresh(); +} + +GHC_INLINE void directory_entry::replace_filename(const filesystem::path& p, std::error_code& ec) +{ + _path.replace_filename(p); + refresh(ec); +} + +GHC_INLINE void directory_entry::refresh() +{ + std::error_code ec; + refresh(ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), _path, ec); + } +} + +GHC_INLINE void directory_entry::refresh(std::error_code& ec) noexcept +{ +#ifdef GHC_OS_WINDOWS + _status = detail::status_ex(_path, ec, &_symlink_status, &_file_size, nullptr, &_last_write_time); +#else + _status = detail::status_ex(_path, ec, &_symlink_status, &_file_size, &_hard_link_count, &_last_write_time); +#endif +} + +// 30.10.12.3 directory_entry observers +GHC_INLINE const filesystem::path& directory_entry::path() const noexcept +{ + return _path; +} + +GHC_INLINE directory_entry::operator const filesystem::path&() const noexcept +{ + return _path; +} + +GHC_INLINE bool directory_entry::exists() const +{ + return filesystem::exists(status()); +} + +GHC_INLINE bool directory_entry::exists(std::error_code& ec) const noexcept +{ + return filesystem::exists(status(ec)); +} + +GHC_INLINE bool directory_entry::is_block_file() const +{ + return filesystem::is_block_file(status()); +} +GHC_INLINE bool directory_entry::is_block_file(std::error_code& ec) const noexcept +{ + return filesystem::is_block_file(status(ec)); +} + +GHC_INLINE bool directory_entry::is_character_file() const +{ + return filesystem::is_character_file(status()); +} + +GHC_INLINE bool directory_entry::is_character_file(std::error_code& ec) const noexcept +{ + return filesystem::is_character_file(status(ec)); +} + +GHC_INLINE bool directory_entry::is_directory() const +{ + return filesystem::is_directory(status()); +} + +GHC_INLINE bool directory_entry::is_directory(std::error_code& ec) const noexcept +{ + return filesystem::is_directory(status(ec)); +} + +GHC_INLINE bool directory_entry::is_fifo() const +{ + return filesystem::is_fifo(status()); +} + +GHC_INLINE bool directory_entry::is_fifo(std::error_code& ec) const noexcept +{ + return filesystem::is_fifo(status(ec)); +} + +GHC_INLINE bool directory_entry::is_other() const +{ + return filesystem::is_other(status()); +} + +GHC_INLINE bool directory_entry::is_other(std::error_code& ec) const noexcept +{ + return filesystem::is_other(status(ec)); +} + +GHC_INLINE bool directory_entry::is_regular_file() const +{ + return filesystem::is_regular_file(status()); +} + +GHC_INLINE bool directory_entry::is_regular_file(std::error_code& ec) const noexcept +{ + return filesystem::is_regular_file(status(ec)); +} + +GHC_INLINE bool directory_entry::is_socket() const +{ + return filesystem::is_socket(status()); +} + +GHC_INLINE bool directory_entry::is_socket(std::error_code& ec) const noexcept +{ + return filesystem::is_socket(status(ec)); +} + +GHC_INLINE bool directory_entry::is_symlink() const +{ + return filesystem::is_symlink(symlink_status()); +} + +GHC_INLINE bool directory_entry::is_symlink(std::error_code& ec) const noexcept +{ + return filesystem::is_symlink(symlink_status(ec)); +} + +GHC_INLINE uintmax_t directory_entry::file_size() const +{ + if (_status.type() != file_type::none) { + return _file_size; + } + return filesystem::file_size(path()); +} + +GHC_INLINE uintmax_t directory_entry::file_size(std::error_code& ec) const noexcept +{ + if (_status.type() != file_type::none) { + ec.clear(); + return _file_size; + } + return filesystem::file_size(path(), ec); +} + +GHC_INLINE uintmax_t directory_entry::hard_link_count() const +{ +#ifndef GHC_OS_WINDOWS + if (_status.type() != file_type::none) { + return _hard_link_count; + } +#endif + return filesystem::hard_link_count(path()); +} + +GHC_INLINE uintmax_t directory_entry::hard_link_count(std::error_code& ec) const noexcept +{ +#ifndef GHC_OS_WINDOWS + if (_status.type() != file_type::none) { + ec.clear(); + return _hard_link_count; + } +#endif + return filesystem::hard_link_count(path(), ec); +} + +GHC_INLINE file_time_type directory_entry::last_write_time() const +{ + if (_status.type() != file_type::none) { + return std::chrono::system_clock::from_time_t(_last_write_time); + } + return filesystem::last_write_time(path()); +} + +GHC_INLINE file_time_type directory_entry::last_write_time(std::error_code& ec) const noexcept +{ + if (_status.type() != file_type::none) { + ec.clear(); + return std::chrono::system_clock::from_time_t(_last_write_time); + } + return filesystem::last_write_time(path(), ec); +} + +GHC_INLINE file_status directory_entry::status() const +{ + if (_status.type() != file_type::none) { + return _status; + } + return filesystem::status(path()); +} + +GHC_INLINE file_status directory_entry::status(std::error_code& ec) const noexcept +{ + if (_status.type() != file_type::none) { + ec.clear(); + return _status; + } + return filesystem::status(path(), ec); +} + +GHC_INLINE file_status directory_entry::symlink_status() const +{ + if (_symlink_status.type() != file_type::none) { + return _symlink_status; + } + return filesystem::symlink_status(path()); +} + +GHC_INLINE file_status directory_entry::symlink_status(std::error_code& ec) const noexcept +{ + if (_symlink_status.type() != file_type::none) { + ec.clear(); + return _symlink_status; + } + return filesystem::symlink_status(path(), ec); +} + +GHC_INLINE bool directory_entry::operator<(const directory_entry& rhs) const noexcept +{ + return _path < rhs._path; +} + +GHC_INLINE bool directory_entry::operator==(const directory_entry& rhs) const noexcept +{ + return _path == rhs._path; +} + +GHC_INLINE bool directory_entry::operator!=(const directory_entry& rhs) const noexcept +{ + return _path != rhs._path; +} + +GHC_INLINE bool directory_entry::operator<=(const directory_entry& rhs) const noexcept +{ + return _path <= rhs._path; +} + +GHC_INLINE bool directory_entry::operator>(const directory_entry& rhs) const noexcept +{ + return _path > rhs._path; +} + +GHC_INLINE bool directory_entry::operator>=(const directory_entry& rhs) const noexcept +{ + return _path >= rhs._path; +} + +//----------------------------------------------------------------------------- +// 30.10.13 class directory_iterator + +#ifdef GHC_OS_WINDOWS +class directory_iterator::impl +{ +public: + impl(const path& p, directory_options options) + : _base(p) + , _options(options) + , _dirHandle(INVALID_HANDLE_VALUE) + { + if (!_base.empty()) { + ZeroMemory(&_findData, sizeof(WIN32_FIND_DATAW)); + if ((_dirHandle = FindFirstFileW(detail::fromUtf8<std::wstring>((_base / "*").u8string()).c_str(), &_findData)) != INVALID_HANDLE_VALUE) { + if (std::wstring(_findData.cFileName) == L"." || std::wstring(_findData.cFileName) == L"..") { + increment(_ec); + } + else { + _current = _base / std::wstring(_findData.cFileName); + copyToDirEntry(_ec); + } + } + else { + auto error = ::GetLastError(); + _base = filesystem::path(); + if (error != ERROR_ACCESS_DENIED || (options & directory_options::skip_permission_denied) == directory_options::none) { + _ec = detail::make_system_error(); + } + } + } + } + impl(const impl& other) = delete; + ~impl() + { + if (_dirHandle != INVALID_HANDLE_VALUE) { + FindClose(_dirHandle); + _dirHandle = INVALID_HANDLE_VALUE; + } + } + void increment(std::error_code& ec) + { + if (_dirHandle != INVALID_HANDLE_VALUE) { + do { + if (FindNextFileW(_dirHandle, &_findData)) { + _current = _base; + try { + _current.append_name(detail::toUtf8(_findData.cFileName).c_str()); + } + catch(filesystem_error& fe) { + ec = fe.code(); + return; + } + copyToDirEntry(ec); + } + else { + auto err = ::GetLastError(); + if(err != ERROR_NO_MORE_FILES) { + _ec = ec = detail::make_system_error(err); + } + FindClose(_dirHandle); + _dirHandle = INVALID_HANDLE_VALUE; + _current = filesystem::path(); + break; + } + } while (std::wstring(_findData.cFileName) == L"." || std::wstring(_findData.cFileName) == L".."); + } + else { + ec = _ec; + } + } + void copyToDirEntry(std::error_code& ec) + { + _dir_entry._path = _current; + if (_findData.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) { + _dir_entry._status = detail::status_ex(_current, ec, &_dir_entry._symlink_status, &_dir_entry._file_size, nullptr, &_dir_entry._last_write_time); + } + else { + _dir_entry._status = detail::status_from_INFO(_current, &_findData, ec, &_dir_entry._file_size, &_dir_entry._last_write_time); + _dir_entry._symlink_status = _dir_entry._status; + } + if (ec) { + if (_dir_entry._status.type() != file_type::none && _dir_entry._symlink_status.type() != file_type::none) { + ec.clear(); + } + else { + _dir_entry._file_size = static_cast<uintmax_t>(-1); + _dir_entry._last_write_time = 0; + } + } + } + path _base; + directory_options _options; + WIN32_FIND_DATAW _findData; + HANDLE _dirHandle; + path _current; + directory_entry _dir_entry; + std::error_code _ec; +}; +#else +// POSIX implementation +class directory_iterator::impl +{ +public: + impl(const path& path, directory_options options) + : _base(path) + , _options(options) + , _dir(nullptr) + , _entry(nullptr) + { + if (!path.empty()) { + _dir = ::opendir(path.native().c_str()); + } + if (!path.empty()) { + if (!_dir) { + auto error = errno; + _base = filesystem::path(); + if (error != EACCES || (options & directory_options::skip_permission_denied) == directory_options::none) { + _ec = detail::make_system_error(); + } + } + else { + increment(_ec); + } + } + } + impl(const impl& other) = delete; + ~impl() + { + if (_dir) { + ::closedir(_dir); + } + } + void increment(std::error_code& ec) + { + if (_dir) { + do { + errno = 0; + _entry = readdir(_dir); + if (_entry) { + _current = _base; + _current.append_name(_entry->d_name); + _dir_entry = directory_entry(_current, ec); + } + else { + ::closedir(_dir); + _dir = nullptr; + _current = path(); + if (errno) { + ec = detail::make_system_error(); + } + break; + } + } while (std::strcmp(_entry->d_name, ".") == 0 || std::strcmp(_entry->d_name, "..") == 0); + } + } + path _base; + directory_options _options; + path _current; + DIR* _dir; + struct ::dirent* _entry; + directory_entry _dir_entry; + std::error_code _ec; +}; +#endif + +// 30.10.13.1 member functions +GHC_INLINE directory_iterator::directory_iterator() noexcept + : _impl(new impl(path(), directory_options::none)) +{ +} + +GHC_INLINE directory_iterator::directory_iterator(const path& p) + : _impl(new impl(p, directory_options::none)) +{ + if (_impl->_ec) { + throw filesystem_error(detail::systemErrorText(_impl->_ec.value()), p, _impl->_ec); + } + _impl->_ec.clear(); +} + +GHC_INLINE directory_iterator::directory_iterator(const path& p, directory_options options) + : _impl(new impl(p, options)) +{ + if (_impl->_ec) { + throw filesystem_error(detail::systemErrorText(_impl->_ec.value()), p, _impl->_ec); + } +} + +GHC_INLINE directory_iterator::directory_iterator(const path& p, std::error_code& ec) noexcept + : _impl(new impl(p, directory_options::none)) +{ + if (_impl->_ec) { + ec = _impl->_ec; + } +} + +GHC_INLINE directory_iterator::directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept + : _impl(new impl(p, options)) +{ + if (_impl->_ec) { + ec = _impl->_ec; + } +} + +GHC_INLINE directory_iterator::directory_iterator(const directory_iterator& rhs) + : _impl(rhs._impl) +{ +} + +GHC_INLINE directory_iterator::directory_iterator(directory_iterator&& rhs) noexcept + : _impl(std::move(rhs._impl)) +{ +} + +GHC_INLINE directory_iterator::~directory_iterator() {} + +GHC_INLINE directory_iterator& directory_iterator::operator=(const directory_iterator& rhs) +{ + _impl = rhs._impl; + return *this; +} + +GHC_INLINE directory_iterator& directory_iterator::operator=(directory_iterator&& rhs) noexcept +{ + _impl = std::move(rhs._impl); + return *this; +} + +GHC_INLINE const directory_entry& directory_iterator::operator*() const +{ + return _impl->_dir_entry; +} + +GHC_INLINE const directory_entry* directory_iterator::operator->() const +{ + return &_impl->_dir_entry; +} + +GHC_INLINE directory_iterator& directory_iterator::operator++() +{ + std::error_code ec; + _impl->increment(ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), _impl->_current, ec); + } + return *this; +} + +GHC_INLINE directory_iterator& directory_iterator::increment(std::error_code& ec) noexcept +{ + _impl->increment(ec); + return *this; +} + +GHC_INLINE bool directory_iterator::operator==(const directory_iterator& rhs) const +{ + return _impl->_current == rhs._impl->_current; +} + +GHC_INLINE bool directory_iterator::operator!=(const directory_iterator& rhs) const +{ + return _impl->_current != rhs._impl->_current; +} + +// 30.10.13.2 directory_iterator non-member functions + +GHC_INLINE directory_iterator begin(directory_iterator iter) noexcept +{ + return iter; +} + +GHC_INLINE directory_iterator end(const directory_iterator&) noexcept +{ + return directory_iterator(); +} + +//----------------------------------------------------------------------------- +// 30.10.14 class recursive_directory_iterator + +GHC_INLINE recursive_directory_iterator::recursive_directory_iterator() noexcept + : _impl(new recursive_directory_iterator_impl(directory_options::none, true)) +{ + _impl->_dir_iter_stack.push(directory_iterator()); +} + +GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p) + : _impl(new recursive_directory_iterator_impl(directory_options::none, true)) +{ + _impl->_dir_iter_stack.push(directory_iterator(p)); +} + +GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p, directory_options options) + : _impl(new recursive_directory_iterator_impl(options, true)) +{ + _impl->_dir_iter_stack.push(directory_iterator(p, options)); +} + +GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p, directory_options options, std::error_code& ec) noexcept + : _impl(new recursive_directory_iterator_impl(options, true)) +{ + _impl->_dir_iter_stack.push(directory_iterator(p, options, ec)); +} + +GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const path& p, std::error_code& ec) noexcept + : _impl(new recursive_directory_iterator_impl(directory_options::none, true)) +{ + _impl->_dir_iter_stack.push(directory_iterator(p, ec)); +} + +GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(const recursive_directory_iterator& rhs) + : _impl(rhs._impl) +{ +} + +GHC_INLINE recursive_directory_iterator::recursive_directory_iterator(recursive_directory_iterator&& rhs) noexcept + : _impl(std::move(rhs._impl)) +{ +} + +GHC_INLINE recursive_directory_iterator::~recursive_directory_iterator() {} + +// 30.10.14.1 observers +GHC_INLINE directory_options recursive_directory_iterator::options() const +{ + return _impl->_options; +} + +GHC_INLINE int recursive_directory_iterator::depth() const +{ + return static_cast<int>(_impl->_dir_iter_stack.size() - 1); +} + +GHC_INLINE bool recursive_directory_iterator::recursion_pending() const +{ + return _impl->_recursion_pending; +} + +GHC_INLINE const directory_entry& recursive_directory_iterator::operator*() const +{ + return *(_impl->_dir_iter_stack.top()); +} + +GHC_INLINE const directory_entry* recursive_directory_iterator::operator->() const +{ + return &(*(_impl->_dir_iter_stack.top())); +} + +// 30.10.14.1 modifiers recursive_directory_iterator& +GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::operator=(const recursive_directory_iterator& rhs) +{ + _impl = rhs._impl; + return *this; +} + +GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::operator=(recursive_directory_iterator&& rhs) noexcept +{ + _impl = std::move(rhs._impl); + return *this; +} + +GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::operator++() +{ + std::error_code ec; + increment(ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), _impl->_dir_iter_stack.empty() ? path() : _impl->_dir_iter_stack.top()->path(), ec); + } + return *this; +} + +GHC_INLINE recursive_directory_iterator& recursive_directory_iterator::increment(std::error_code& ec) noexcept +{ + if (recursion_pending() && is_directory((*this)->status()) && (!is_symlink((*this)->symlink_status()) || (options() & directory_options::follow_directory_symlink) != directory_options::none)) { + _impl->_dir_iter_stack.push(directory_iterator((*this)->path(), _impl->_options, ec)); + } + else { + _impl->_dir_iter_stack.top().increment(ec); + } + if (!ec) { + while (depth() && _impl->_dir_iter_stack.top() == directory_iterator()) { + _impl->_dir_iter_stack.pop(); + _impl->_dir_iter_stack.top().increment(ec); + } + } + else if (!_impl->_dir_iter_stack.empty()) { + _impl->_dir_iter_stack.pop(); + } + _impl->_recursion_pending = true; + return *this; +} + +GHC_INLINE void recursive_directory_iterator::pop() +{ + std::error_code ec; + pop(ec); + if (ec) { + throw filesystem_error(detail::systemErrorText(ec.value()), _impl->_dir_iter_stack.empty() ? path() : _impl->_dir_iter_stack.top()->path(), ec); + } +} + +GHC_INLINE void recursive_directory_iterator::pop(std::error_code& ec) +{ + if (depth() == 0) { + *this = recursive_directory_iterator(); + } + else { + do { + _impl->_dir_iter_stack.pop(); + _impl->_dir_iter_stack.top().increment(ec); + } while (depth() && _impl->_dir_iter_stack.top() == directory_iterator()); + } +} + +GHC_INLINE void recursive_directory_iterator::disable_recursion_pending() +{ + _impl->_recursion_pending = false; +} + +// other members as required by 27.2.3, input iterators +GHC_INLINE bool recursive_directory_iterator::operator==(const recursive_directory_iterator& rhs) const +{ + return _impl->_dir_iter_stack.top() == rhs._impl->_dir_iter_stack.top(); +} + +GHC_INLINE bool recursive_directory_iterator::operator!=(const recursive_directory_iterator& rhs) const +{ + return _impl->_dir_iter_stack.top() != rhs._impl->_dir_iter_stack.top(); +} + +// 30.10.14.2 directory_iterator non-member functions +GHC_INLINE recursive_directory_iterator begin(recursive_directory_iterator iter) noexcept +{ + return iter; +} + +GHC_INLINE recursive_directory_iterator end(const recursive_directory_iterator&) noexcept +{ + return recursive_directory_iterator(); +} + +#endif // GHC_EXPAND_IMPL + +} // namespace filesystem +} // namespace ghc + +// cleanup some macros +#undef GHC_INLINE +#undef GHC_EXPAND_IMPL + +#endif // GHC_FILESYSTEM_H |