Spot Spy Client

//---------------------------------------------------------------
------------------------
//
// ghc::filesystem - A C++17-like filesystem implementation for
C++11/C++14/C++17/C++20
//
//---------------------------------------------------------------
------------------------
//
// 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 on most
platforms,
// you could use:
//
// #if ((defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) ||
(defined(__cplusplus) && __cplusplus >= 201703L)) &&
defined(__has_include)
// #if __has_include(<filesystem>) && (!
defined(__MAC_OS_X_VERSION_MIN_REQUIRED) ||
__MAC_OS_X_VERSION_MIN_REQUIRED >= 101500)
// #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
//
//---------------------------------------------------------------
------------------------
#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(__sun) && defined(__SVR4)
#define GHC_OS_SOLARIS
#define GHC_NO_DIRENT_D_TYPE
#elif defined(__CYGWIN__)
#define GHC_OS_CYGWIN
#elif defined(__svr4__)
#define GHC_OS_SYS5R4
#elif defined(BSD)
#define GHC_OS_BSD
#elif defined(__EMSCRIPTEN__)
#define GHC_OS_WEB
#include <wasi/api.h>
#elif defined(__QNX__)
#define GHC_OS_QNX
#define GHC_NO_DIRENT_D_TYPE
#else
#error "Operating system currently not supported!"
#endif
#define GHC_OS_DETECTED
#if (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
#if _MSVC_LANG == 201703L
#define GHC_FILESYSTEM_RUNNING_CPP17
#else
#endif
#elif (defined(__cplusplus) && __cplusplus >= 201703L)
#if __cplusplus == 201703L
#else
#endif
#endif
#endif
#if defined(GHC_FILESYSTEM_IMPLEMENTATION)
#define GHC_EXPAND_IMPL
#define GHC_INLINE
#ifdef GHC_OS_WINDOWS
#ifndef GHC_FS_API
#define GHC_FS_API
#endif
#ifndef GHC_FS_API_CLASS
#define GHC_FS_API_CLASS
#endif
#else
#ifndef GHC_FS_API
#define GHC_FS_API __attribute__((visibility("default")))
#endif
#define GHC_FS_API_CLASS __attribute__((visibility("default")))
#endif
#endif
#elif defined(GHC_FILESYSTEM_FWD)
#define GHC_INLINE
#ifndef GHC_FS_API
#define GHC_FS_API extern
#endif
#endif
#else
#ifndef GHC_FS_API
#define GHC_FS_API extern
#endif
#endif
#endif
#else
#define GHC_EXPAND_IMPL
#define GHC_INLINE inline
#ifndef GHC_FS_API
#define GHC_FS_API
#endif
#endif
#endif
#ifdef GHC_EXPAND_IMPL
#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 <limits.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#ifdef GHC_OS_ANDROID
#include <android/api-level.h>
#if __ANDROID_API__ < 12
#include <sys/syscall.h>
#endif
#include <sys/vfs.h>
#define statvfs statfs
#else
#include <sys/statvfs.h>
#endif
#ifdef GHC_OS_CYGWIN
#include <strings.h>
#endif
#if !defined(__ANDROID__) || __ANDROID_API__ >= 26
#include <langinfo.h>
#endif
#endif
#ifdef GHC_OS_MACOS
#include <Availability.h>
#endif
#if defined(__cpp_impl_three_way_comparison) &&

#if __has_include(<compare>)
#define GHC_HAS_THREEWAY_COMP
#include <compare>
#endif
#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
#if defined(__cpp_impl_three_way_comparison) &&

#if __has_include(<compare>)
#define GHC_HAS_THREEWAY_COMP
#include <compare>
#endif
#endif
#include <chrono>
#include <fstream>
#include <memory>
#include <stack>
#include <stdexcept>
#include <string>
#include <system_error>
#include <vector>
#endif
#endif // GHC_EXPAND_IMPL
// After standard library includes.

// Standard library support for std::string_view.
#if defined(__cpp_lib_string_view)
#define GHC_HAS_STD_STRING_VIEW
#elif defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 4000) &&
(__cplusplus >= 201402)
#elif defined(_GLIBCXX_RELEASE) && (_GLIBCXX_RELEASE >= 7) &&
(__cplusplus >= 201703)
#elif defined(_MSC_VER) && (_MSC_VER >= 1910 && _MSVC_LANG >=
201703)
#endif
// Standard library support for std::experimental::string_view.

#if defined(_LIBCPP_VERSION) && (_LIBCPP_VERSION >= 3700 &&
_LIBCPP_VERSION < 7000) && (__cplusplus >= 201402)
#define GHC_HAS_STD_EXPERIMENTAL_STRING_VIEW
#elif defined(__GNUC__) && (((__GNUC__ == 4) && (__GNUC_MINOR__
>= 9)) || (__GNUC__ > 4)) && (__cplusplus >= 201402)
#elif defined(__GLIBCXX__) && defined(_GLIBCXX_USE_DUAL_ABI) &&
(__cplusplus >= 201402)
// macro _GLIBCXX_USE_DUAL_ABI is always defined in libstdc++
from gcc-5 and newer
#endif
#if defined(GHC_HAS_STD_STRING_VIEW)
#include <string_view>
#elif defined(GHC_HAS_STD_EXPERIMENTAL_STRING_VIEW)
#include <experimental/string_view>
#endif
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// Behaviour Switches (see README.md, should match the config in
test/filesystem_test.cpp):
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// Enforce C++17 API where possible when compiling for C++20,
handles the following cases:
// * fs::path::u8string() returns std::string instead of
std::u8string
// #define GHC_FILESYSTEM_ENFORCE_CPP17_API
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// 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 superseded by P1164R1, so only
activate if really needed
// #define LWG_2935_BEHAVIOUR
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// LWG #2936 enables new element wise (more expensive) path
comparison
// * if this-
>root_name().native().compare(p.root_name().native()) != 0 return
result
// * if this->has_root_directory() and !p.has_root_directory()
return -1
// * if !this->has_root_directory() and p.has_root_directory()
return -1
// * else result of element wise comparison of path iteration
where first comparison is != 0 or 0
// if all comparisons are 0 (on Windows this implementation
does case insensitive root_name()
// comparison)
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// LWG #2937 enforces that fs::equivalent emits an error, if !
fs::exists(p1)||!exists(p2)
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// UTF8-Everywhere is the original behaviour of ghc::filesystem.
But since v1.5 the windows
// version defaults to std::wstring storage backend. Still all
std::string will be interpreted
// as UTF-8 encoded. With this define you can enfoce the old
behavior on Windows, using
// std::string as backend and for fs::path::native() and char for
fs::path::c_str(). This
// needs more conversions so it is (an was before v1.5) slower,
bot might help keeping source
// homogeneous in a multi platform project.
// #define GHC_WIN_DISABLE_WSTRING_STORAGE_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
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// Automatic prefix windows path with "\\?\" if they would break
the MAX_PATH length.
// instead of replacing them with the unicode replacement
character (U+FFFD).
#ifndef GHC_WIN_DISABLE_AUTO_PREFIXES
#define GHC_WIN_AUTO_PREFIX_LONG_PATH
#endif // GHC_WIN_DISABLE_AUTO_PREFIXES
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - -
// ghc::filesystem version in decimal (major * 10000 + minor *

100 + patch)
#define GHC_FILESYSTEM_VERSION 10506L
#if !defined(GHC_WITH_EXCEPTIONS) && (defined(__EXCEPTIONS) ||

defined(__cpp_exceptions) || defined(_CPPUNWIND))
#define GHC_WITH_EXCEPTIONS
#endif
#if !defined(GHC_WITH_EXCEPTIONS) &&
defined(GHC_RAISE_UNICODE_ERRORS)
#error "Can't raise unicode errors with exception support
disabled"
#endif
namespace ghc {
namespace filesystem {
#if defined(GHC_HAS_CUSTOM_STRING_VIEW)
#define GHC_WITH_STRING_VIEW
#elif defined(GHC_HAS_STD_STRING_VIEW)
using std::basic_string_view;
#elif defined(GHC_HAS_STD_EXPERIMENTAL_STRING_VIEW)
using std::experimental::basic_string_view;
#endif
// 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;
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
class path;
namespace detail {
bool has_executable_extension(const path& p);
}
#endif
// [fs.class.path] class path

class GHC_FS_API_CLASS path
#if defined(GHC_OS_WINDOWS) && !
defined(GHC_WIN_DISABLE_WSTRING_STORAGE_TYPE)
#define GHC_USE_WCHAR_T
#define GHC_NATIVEWP(p) p.c_str()
#define GHC_PLATFORM_LITERAL(str) L##str
: private path_helper_base<std::wstring::value_type>
{
public:
using path_helper_base<std::wstring::value_type>::value_type;
#else
#define GHC_NATIVEWP(p) p.wstring().c_str()
#define GHC_PLATFORM_LITERAL(str) str
: 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;
// [fs.enum.path.format] enumeration format

/// The path format in which 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
{
};
template <class CharT>
struct _is_basic_string<std::basic_string<CharT,
std::char_traits<CharT>, std::allocator<CharT>>> : std::true_type
{
};
#ifdef GHC_WITH_STRING_VIEW
template <class CharT, class Traits>
struct _is_basic_string<basic_string_view<CharT, Traits>> :
std::true_type
{
};
template <class CharT>
struct _is_basic_string<basic_string_view<CharT,
std::char_traits<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;
template <typename T>
#if defined(__cpp_lib_char8_t) && !
defined(GHC_FILESYSTEM_ENFORCE_CPP17_API)
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<char8_t const*, typename std::decay<T>::type>::value
||
std::is_same<char8_t*,
typename std::decay<T>::type>::value || std::is_same<char16_t
const*, typename std::decay<T>::type>::value ||
std::is_same<char16_t*, typename std::decay<T>::type>::value ||
std::is_same<char32_t const*,
typename std::decay<T>::type>::value || std::is_same<char32_t*,
typename std::decay<T>::type>::value || std::is_same<wchar_t
std::is_same<wchar_t*,
typename std::decay<T>::type>::value,
path>::type;
using path_type_EcharT = typename
std::enable_if<std::is_same<T, char>::value || std::is_same<T,
char8_t>::value || std::is_same<T, char16_t>::value ||
std::is_same<T, char32_t>::value || std::is_same<T,
wchar_t>::value, path>::type;
#else
using path_from_string = typename
std::enable_if<_is_basic_string<T>::value || std::is_same<char
std::is_same<char*, typename std::decay<T>::type>::value ||
std::is_same<char16_t const*,
typename std::decay<T>::type>::value || std::is_same<char16_t*,
typename std::decay<T>::type>::value || std::is_same<char32_t
std::is_same<char32_t*,
typename std::decay<T>::type>::value || std::is_same<wchar_t
std::is_same<wchar_t*, typename std::decay<T>::type>::value,
path>::type;
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
// [fs.path.construct] 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);
#ifdef GHC_WITH_EXCEPTIONS
template <class Source, typename = path_from_string<Source>>
path(const Source& source, const std::locale& loc, format fmt
= auto_format);
path(InputIterator first, InputIterator last, const
std::locale& loc, format fmt = auto_format);
#endif
~path();
// [fs.path.assign] 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);
path& assign(const Source& source);
path& assign(InputIterator first, InputIterator last);
// [fs.path.append] appends
path& operator/=(const path& p);
path& operator/=(const Source& source);
path& append(const Source& source);
path& append(InputIterator first, InputIterator last);
// [fs.path.concat] concatenation
path& operator+=(const path& x);
path& operator+=(const string_type& x);
path& operator+=(basic_string_view<value_type> x);
#endif
path& operator+=(const value_type* x);
path& operator+=(value_type x);
path_from_string<Source>& operator+=(const Source& x);
template <class EcharT>
path_type_EcharT<EcharT>& operator+=(EcharT x);
path& concat(const Source& x);
path& concat(InputIterator first, InputIterator last);
// [fs.path.modifiers] 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;
// [fs.path.native.obs] native format observers

const string_type& native() const noexcept;
const value_type* c_str() const noexcept;
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::u8string u8string() const;
#else
std::string u8string() const;
#endif
// [fs.path.generic.obs] 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;
std::string generic_string() const;
std::wstring generic_wstring() const;
std::u8string generic_u8string() const;
#else
std::string generic_u8string() const;
#endif
// [fs.path.compare] compare
int compare(const path& p) const noexcept;
int compare(const string_type& s) const;
int compare(basic_string_view<value_type> s) const;
#endif
int compare(const value_type* s) const;
// [fs.path.decompose] 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;
// [fs.path.query] 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;
// [fs.path.gen] generation
path lexically_normal() const;
path lexically_relative(const path& base) const;
path lexically_proximate(const path& base) const;
// [fs.path.itr] iterators
class iterator;
using const_iterator = iterator;
iterator begin() const;
iterator end() const;
private:
using impl_value_type = value_type;
using impl_string_type = std::basic_string<impl_value_type>;
friend class directory_iterator;
void append_name(const value_type* 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;
friend path canonical(const path& p, std::error_code& ec);
string_type::size_type root_name_length() const noexcept;
void postprocess_path_with_format(format fmt);
void check_long_path();
impl_string_type _path;
void handle_prefixes();
friend bool detail::has_executable_extension(const path& p);
#ifdef GHC_WIN_AUTO_PREFIX_LONG_PATH
string_type::size_type _prefixLength{0};
#else // GHC_WIN_AUTO_PREFIX_LONG_PATH
static const string_type::size_type _prefixLength{0};
#endif // GHC_WIN_AUTO_PREFIX_LONG_PATH
#else
static const string_type::size_type _prefixLength{0};
#endif
};
// [fs.path.nonmember] 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;
#ifdef GHC_HAS_THREEWAY_COMP
GHC_FS_API std::strong_ordering operator<=>(const path& lhs,
const path& rhs) noexcept;
#endif
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);
// [fs.path.io] 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);
// [pfs.path.factory] path factory functions

template <class Source, typename =
path::path_from_string<Source>>
[[deprecated("use ghc::filesystem::path::path() with
std::u8string instead")]]
#endif
path u8path(const Source& source);
[[deprecated("use ghc::filesystem::path::path() with
std::u8string instead")]]
#endif
path u8path(InputIterator first, InputIterator last);
// [fs.class.filesystem_error] 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 path& p, 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:
friend class path;
impl_string_type::const_iterator increment(const
impl_string_type::const_iterator& pos) const;
impl_string_type::const_iterator decrement(const
impl_string_type::const_iterator& pos) const;
void updateCurrent();
impl_string_type::const_iterator _first;
impl_string_type::const_iterator _last;
impl_string_type::const_iterator _prefix;
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;
};
// [fs.enum] enumerations
// [fs.enum.file_type]
enum class file_type {
none,
not_found,
regular,
directory,
symlink,
block,
character,
fifo,
socket,
unknown,
};
// [fs.enum.perms]
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
};
// [fs.enum.perm.opts]
enum class perm_options : uint16_t {
replace = 3,
add = 1,
remove = 2,
nofollow = 4,
};
// [fs.enum.copy.opts]
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,
#ifndef GHC_OS_WEB
create_hard_links = 0x100
#endif
};
// [fs.enum.dir.opts]
enum class directory_options : uint16_t {
none = 0,
follow_directory_symlink = 1,
skip_permission_denied = 2,
};
// [fs.class.file_status] class file_status

class GHC_FS_API_CLASS file_status
{
public:
// [fs.file_status.cons] 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;
// [fs.file_status.mods] modifiers
void type(file_type ft) noexcept;
void permissions(perms prms) noexcept;
// [fs.file_status.obs] observers
file_type type() const noexcept;
perms permissions() const noexcept;
friend bool operator==(const file_status& lhs, const
file_status& rhs) noexcept { return lhs.type() == rhs.type() &&
lhs.permissions() == rhs.permissions(); }
private:
file_type _type;
perms _perms;
};
using file_time_type =
std::chrono::time_point<std::chrono::system_clock>;
// [fs.class.directory_entry] Class directory_entry

class GHC_FS_API_CLASS directory_entry
{
public:
// [fs.dir.entry.cons] 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);
#endif
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;
// [fs.dir.entry.mods] modifiers
void assign(const path& p);
void replace_filename(const path& p);
void refresh();
#endif
void assign(const path& p, std::error_code& ec);
void replace_filename(const path& p, std::error_code& ec);
void refresh(std::error_code& ec) noexcept;
// [fs.dir.entry.obs] observers
const filesystem::path& path() const noexcept;
operator const filesystem::path&() const noexcept;
bool exists() const;
bool is_block_file() const;
bool is_character_file() const;
bool is_directory() const;
bool is_fifo() const;
bool is_other() const;
bool is_regular_file() const;
bool is_socket() const;
bool is_symlink() const;
uintmax_t file_size() const;
file_time_type last_write_time() const;
file_status status() const;
file_status symlink_status() const;
#endif
bool exists(std::error_code& ec) const noexcept;
bool is_block_file(std::error_code& ec) const noexcept;
bool is_character_file(std::error_code& ec) const noexcept;
bool is_directory(std::error_code& ec) const noexcept;
bool is_fifo(std::error_code& ec) const noexcept;
bool is_other(std::error_code& ec) const noexcept;
bool is_regular_file(std::error_code& ec) const noexcept;
bool is_socket(std::error_code& ec) const noexcept;
bool is_symlink(std::error_code& ec) const noexcept;
uintmax_t file_size(std::error_code& ec) const noexcept;
file_time_type last_write_time(std::error_code& ec) const
noexcept;
file_status status(std::error_code& ec) const noexcept;
file_status symlink_status(std::error_code& ec) const
noexcept;
#ifndef GHC_OS_WEB
uintmax_t hard_link_count() const;
#endif
uintmax_t hard_link_count(std::error_code& ec) const
noexcept;
#endif
#ifdef GHC_HAS_THREEWAY_COMP
std::strong_ordering operator<=>(const directory_entry& rhs)
const noexcept;
#endif
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:
file_type status_file_type() const;
#endif
file_type status_file_type(std::error_code& ec) const
noexcept;
filesystem::path _path;
file_status _status;
file_status _symlink_status;
uintmax_t _file_size = static_cast<uintmax_t>(-1);
#ifndef GHC_OS_WINDOWS
uintmax_t _hard_link_count = static_cast<uintmax_t>(-1);
#endif
time_t _last_write_time = 0;
};
// [fs.class.directory.iterator] 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 recursive_directory_iterator;
directory_entry _dir_entry;
};
using iterator_category = std::input_iterator_tag;
using value_type = directory_entry;
using pointer = const directory_entry*;
using reference = const directory_entry&;
// [fs.dir.itr.members] member functions

directory_iterator() noexcept;
explicit directory_iterator(const path& p);
directory_iterator(const path& p, directory_options options);
#endif
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++();
#endif
directory_iterator& increment(std::error_code& ec) noexcept;
// other members as required by [input.iterators]

proxy operator++(int)
{
proxy p{**this};
++*this;
return p;
}
#endif
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;
};
// [fs.dir.itr.nonmembers] 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;
// [fs.class.re.dir.itr] 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 pointer = const directory_entry*;
using reference = const directory_entry&;
// [fs.rec.dir.itr.members] constructors and destructor

recursive_directory_iterator() noexcept;
explicit recursive_directory_iterator(const path& p);
recursive_directory_iterator(const path& p, directory_options
options);
#endif
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();
// [fs.rec.dir.itr.members] observers
directory_options options() const;
int depth() const;
bool recursion_pending() const;
const directory_entry& operator*() const;

const directory_entry* operator->() const;
// [fs.rec.dir.itr.members] 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++();
#endif
recursive_directory_iterator& increment(std::error_code& ec)
noexcept;
void pop();
#endif
void pop(std::error_code& ec);
void disable_recursion_pending();
// other members as required by [input.iterators]

directory_iterator::proxy operator++(int)
{
directory_iterator::proxy proxy{**this};
++*this;
return proxy;
}
#endif
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;
};
// [fs.rec.dir.itr.nonmembers] 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;
// [fs.op.funcs] filesystem operations

GHC_FS_API path absolute(const path& p);
GHC_FS_API path canonical(const path& p);
GHC_FS_API void copy(const path& from, const path& to);
GHC_FS_API void copy(const path& from, const path& to,
copy_options options);
GHC_FS_API bool copy_file(const path& from, const path& to);
GHC_FS_API bool copy_file(const path& from, const path& to,
copy_options option);
GHC_FS_API void copy_symlink(const path& existing_symlink, const
path& new_symlink);
GHC_FS_API bool create_directories(const path& p);
GHC_FS_API bool create_directory(const path& p);
GHC_FS_API bool create_directory(const path& p, const path&
attributes);
GHC_FS_API void create_directory_symlink(const path& to, const
path& new_symlink);
GHC_FS_API void create_symlink(const path& to, const path&
new_symlink);
GHC_FS_API path current_path();
GHC_FS_API void current_path(const path& p);
GHC_FS_API bool exists(const path& p);
GHC_FS_API bool equivalent(const path& p1, const path& p2);
GHC_FS_API uintmax_t file_size(const path& p);
GHC_FS_API bool is_block_file(const path& p);
GHC_FS_API bool is_character_file(const path& p);
GHC_FS_API bool is_directory(const path& p);
GHC_FS_API bool is_empty(const path& p);
GHC_FS_API bool is_fifo(const path& p);
GHC_FS_API bool is_other(const path& p);
GHC_FS_API bool is_regular_file(const path& p);
GHC_FS_API bool is_socket(const path& p);
GHC_FS_API bool is_symlink(const path& p);
GHC_FS_API file_time_type last_write_time(const path& p);
GHC_FS_API void last_write_time(const path& p, file_time_type
new_time);
GHC_FS_API void permissions(const path& p, perms prms,
perm_options opts = perm_options::replace);
GHC_FS_API path proximate(const path& p, const path& base =
current_path());
GHC_FS_API path read_symlink(const path& p);
GHC_FS_API path relative(const path& p, const path& base =
current_path());
GHC_FS_API bool remove(const path& p);
GHC_FS_API uintmax_t remove_all(const path& p);
GHC_FS_API void rename(const path& from, const path& to);
GHC_FS_API void resize_file(const path& p, uintmax_t size);
GHC_FS_API space_info space(const path& p);
GHC_FS_API file_status status(const path& p);
GHC_FS_API file_status symlink_status(const path& p);
GHC_FS_API path temp_directory_path();
GHC_FS_API path weakly_canonical(const path& p);
#endif
GHC_FS_API path absolute(const path& p, std::error_code& ec);
GHC_FS_API path canonical(const path& p, std::error_code& ec);
copy_options options, std::error_code& ec) noexcept;
copy_options option, std::error_code& ec) noexcept;
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_directory(const path& p, std::error_code&
ec) noexcept;
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, std::error_code& ec) noexcept;
GHC_FS_API void create_symlink(const path& to, const path&
new_symlink, std::error_code& ec) noexcept;
GHC_FS_API path current_path(std::error_code& ec);
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, std::error_code& ec)
noexcept;
GHC_FS_API bool equivalent(const path& p1, const path& p2,
GHC_FS_API uintmax_t file_size(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, 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, std::error_code&
ec) noexcept;
GHC_FS_API bool is_directory(file_status s) noexcept;
GHC_FS_API bool is_directory(const path& p, std::error_code& ec)
noexcept;
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, std::error_code& ec)
noexcept;
GHC_FS_API bool is_other(file_status s) noexcept;
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, std::error_code&
ec) noexcept;
GHC_FS_API bool is_socket(file_status s) noexcept;
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, std::error_code& ec)
noexcept;
GHC_FS_API file_time_type last_write_time(const path& p,
GHC_FS_API void last_write_time(const path& p, file_time_type
new_time, std::error_code& ec) noexcept;
perm_options opts, std::error_code& ec) noexcept;
GHC_FS_API path proximate(const path& p, std::error_code& ec);
GHC_FS_API path proximate(const path& p, const path& base,
std::error_code& ec);
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,
std::error_code& ec);
GHC_FS_API bool remove(const path& p, std::error_code& ec)
noexcept;
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 resize_file(const path& p, uintmax_t size,
GHC_FS_API space_info space(const path& p, std::error_code& ec)
noexcept;
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 path temp_directory_path(std::error_code& ec)
noexcept;
GHC_FS_API path weakly_canonical(const path& p, std::error_code&
ec) noexcept;
#ifndef GHC_OS_WEB
GHC_FS_API void create_hard_link(const path& to, const path&
new_hard_link);
GHC_FS_API uintmax_t hard_link_count(const path& p);
#endif
GHC_FS_API void create_hard_link(const path& to, const path&
new_hard_link, std::error_code& ec) noexcept;
GHC_FS_API uintmax_t hard_link_count(const path& p,
#endif
// 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(__GLIBCXX__)
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
}
};

class basic_ifstream : public std::basic_ifstream<charT, traits>
{
public:
basic_ifstream() {}
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)
{
}
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 {}
};

class basic_ofstream : public std::basic_ofstream<charT, traits>
{
public:
basic_ofstream() {}
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)
{
}
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)
{
}
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 {}
};

class basic_fstream : public std::basic_fstream<charT, traits>
{
public:
basic_fstream() {}
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)
{
}
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)
{
}
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;
std::vector<std::string> _args;
std::vector<char*> _argp;
#endif
};
//---------------------------------------------------------------
----------------------------------
// Implementation
//---------------------------------------------------------------
----------------------------------
namespace detail {
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);
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 {
GHC_INLINE std::error_code make_error_code(portable_error err)

{
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,
case portable_error::not_supported:
return std::error_code(ERROR_NOT_SUPPORTED,
case portable_error::not_implemented:
return std::error_code(ERROR_CALL_NOT_IMPLEMENTED,
case portable_error::invalid_argument:
return std::error_code(ERROR_INVALID_PARAMETER,
case portable_error::is_a_directory:
#ifdef ERROR_DIRECTORY_NOT_SUPPORTED
return std::error_code(ERROR_DIRECTORY_NOT_SUPPORTED,
#else
return std::error_code(ERROR_NOT_SUPPORTED,
#endif
}
#else
switch (err) {
case portable_error::none:
case portable_error::exists:
return std::error_code(EEXIST,
case portable_error::not_found:
return std::error_code(ENOENT,
case portable_error::not_supported:
return std::error_code(ENOTSUP,
case portable_error::not_implemented:
return std::error_code(ENOSYS,
case portable_error::invalid_argument:
return std::error_code(EINVAL,
case portable_error::is_a_directory:
return std::error_code(EISDIR,
}
#endif
}
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,
}
#endif
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;

constexpr 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));
}

constexpr detail::EnableBitmask<Enum> operator|(Enum X, Enum Y)
{
return static_cast<Enum>(static_cast<underlying>(X) |
}

constexpr detail::EnableBitmask<Enum> operator^(Enum X, Enum Y)
{
return static_cast<Enum>(static_cast<underlying>(X) ^
}

constexpr detail::EnableBitmask<Enum> operator~(Enum X)
{
return static_cast<Enum>(~static_cast<underlying>(X));
}
detail::EnableBitmask<Enum>& operator&=(Enum& X, Enum Y)
{
X = X & Y;
return X;
}

detail::EnableBitmask<Enum>& operator|=(Enum& X, Enum Y)
{
X = X | Y;
return X;
}

detail::EnableBitmask<Enum>& operator^=(Enum& X, Enum Y)
{
X = X ^ Y;
return X;
}
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 & 0xfff) >> 6)
+ 128));
}
else if (unicode >= 0x10000 && unicode <= 0x10ffff) {
str.push_back(static_cast<char>(((unicode & 0x3ffff) >>
12) + 128));
str.push_back(static_cast<char>(((unicode & 0xfff) >> 6)
+ 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;
}
#endif
namespace detail {
template <class StringType, class Utf8String, typename

std::enable_if<path::_is_basic_string<Utf8String>::value &&
(sizeof(typename Utf8String::value_type) == 1) &&
(sizeof(typename StringType::value_type) == 1)>::type* = nullptr>
inline StringType fromUtf8(const Utf8String& utf8String, const
typename StringType::allocator_type& alloc = typename
StringType::allocator_type())
{
return StringType(utf8String.begin(), utf8String.end(),
alloc);
}

{
StringType result(alloc);
result.reserve(utf8String.length());
auto iter = utf8String.cbegin();
while (iter < utf8String.cend()) {
static_cast<uint8_t>(*iter++), codepoint)) == S_STRT) {
if (codepoint <= 0xffff) {
result += static_cast<typename
StringType::value_type>(codepoint);
}
else {
codepoint -= 0x10000;
StringType::value_type>((codepoint >> 10) + 0xd800);
StringType::value_type>((codepoint & 0x3ff) + 0xdc00);
}
codepoint = 0;
}
else if (utf8_state == S_RJCT) {
throw filesystem_error("Illegal byte sequence for
unicode character.", utf8String,
#else
StringType::value_type>(0xfffd);
utf8_state = S_STRT;
codepoint = 0;
#endif
}
}
if (utf8_state) {
throw filesystem_error("Illegal byte sequence for unicode
character.", utf8String,
#else
#endif
}
return result;
}

{
StringType result(alloc);
result.reserve(utf8String.length());
auto iter = utf8String.cbegin();
while (iter < utf8String.cend()) {
static_cast<uint8_t>(*iter++), codepoint)) == S_STRT) {
StringType::value_type>(codepoint);
codepoint = 0;
}
else if (utf8_state == S_RJCT) {
throw filesystem_error("Illegal byte sequence for
unicode character.", utf8String,
#else
utf8_state = S_STRT;
codepoint = 0;
#endif
}
}
if (utf8_state) {
character.", utf8String,
#else
#endif
}
return result;
}
template <class StringType, typename charT, std::size_t N>

inline StringType fromUtf8(const charT (&utf8String)[N])
{
return
fromUtf8<StringType>(basic_string_view<charT>(utf8String, N -
1));
#else
return
fromUtf8<StringType>(std::basic_string<charT>(utf8String, N -
1));
#endif
}
template <typename strT, typename

std::enable_if<path::_is_basic_string<strT>::value &&
(sizeof(typename strT::value_type) == 1), int>::type size = 1>
inline std::string toUtf8(const strT& unicodeString)
{
return std::string(unicodeString.begin(),
unicodeString.end());
}

{
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 {
throw filesystem_error("Illegal code point for
unicode character.", result,
#else
appendUTF8(result, 0xfffd);
if (iter == unicodeString.end()) {
break;
}
#endif
}
}
else {
appendUTF8(result, c);
}
}
return result;
}

{
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(basic_string_view<charT,
std::char_traits<charT>>(unicodeString));
#else
return toUtf8(std::basic_string<charT,
#endif
}
#ifdef GHC_USE_WCHAR_T
template <class StringType, class WString, typename
std::enable_if<path::_is_basic_string<WString>::value &&
(sizeof(typename WString::value_type) == 2) && (sizeof(typename
StringType::value_type) == 1), bool>::type = false>
inline StringType fromWChar(const WString& wString, const
{
auto temp = toUtf8(wString);
return StringType(temp.begin(), temp.end(), alloc);
}

{
return StringType(wString.begin(), wString.end(), alloc);
}

{
auto temp = toUtf8(wString);
return fromUtf8<StringType>(temp, alloc);
}

(sizeof(typename strT::value_type) == 1), bool>::type = false>
inline std::wstring toWChar(const strT& unicodeString)
{
return fromUtf8<std::wstring>(unicodeString);
}

{
return std::wstring(unicodeString.begin(),
unicodeString.end());
}

{
auto temp = toUtf8(unicodeString);
return fromUtf8<std::wstring>(temp);
}
template <typename charT>

inline std::wstring toWChar(const charT* unicodeString)
{
return toWChar(basic_string_view<charT,
#else
return toWChar(std::basic_string<charT,
#endif
}
#endif // GHC_USE_WCHAR_T
namespace detail {

std::enable_if<path::_is_basic_string<strT>::value, bool>::type =
true>
GHC_INLINE bool startsWith(const strT& what, const strT& with)
{
return with.length() <= what.length() && equal(with.begin(),
with.end(), what.begin());
}

std::enable_if<path::_is_basic_string<strT>::value, bool>::type =
true>
GHC_INLINE bool endsWith(const strT& what, const strT& with)
{
return with.length() <= what.length() &&
what.compare(what.length() - with.length(), with.size(), with) ==
0;
}
GHC_INLINE void path::check_long_path()

{
#if defined(GHC_OS_WINDOWS) &&
defined(GHC_WIN_AUTO_PREFIX_LONG_PATH)
if (is_absolute() && _path.length() >= MAX_PATH - 12 && !
detail::startsWith(_path,
impl_string_type(GHC_PLATFORM_LITERAL("\\\\?\\")))) {
postprocess_path_with_format(native_format);
}
#endif
}
GHC_INLINE void path::postprocess_path_with_format(path::format

fmt)
{
if (!detail::validUtf8(_path)) {
path t;
t._path = _path;
character.", t,
}
#endif
switch (fmt) {
case path::native_format:
case path::auto_format:
case path::generic_format:
for (auto& c : _path) {
if (c == generic_separator) {
c = preferred_separator;
}
}
#ifdef GHC_WIN_AUTO_PREFIX_LONG_PATH
if (is_absolute() && _path.length() >= MAX_PATH - 12
&& !detail::startsWith(_path,
impl_string_type(GHC_PLATFORM_LITERAL("\\\\?\\")))) {
_path = GHC_PLATFORM_LITERAL("\\\\?\\") + _path;
}
#endif
handle_prefixes();
break;
#else
case path::auto_format:
case path::native_format:
case path::generic_format:
// nothing to do
break;
#endif
}
if (_path.length() > _prefixLength + 2 &&
_path[_prefixLength] == preferred_separator &&
_path[_prefixLength + 1] == preferred_separator &&
_path[_prefixLength + 2] != preferred_separator) {
impl_string_type::iterator new_end =
std::unique(_path.begin() +
static_cast<string_type::difference_type>(_prefixLength) + 2,
_path.end(), [](path::value_type lhs, path::value_type rhs)
{ return lhs == rhs && lhs == preferred_separator; });
_path.erase(new_end, _path.end());
}
else {
impl_string_type::iterator new_end =
std::unique(_path.begin() +
static_cast<string_type::difference_type>(_prefixLength),
_path.end(), [](path::value_type lhs, path::value_type rhs)
{ return lhs == rhs && lhs == preferred_separator; });
_path.erase(new_end, _path.end());
}
}
template <class Source, typename>
inline path::path(const Source& source, format fmt)
: _path(detail::toWChar(source))
#else
: _path(detail::toUtf8(source))
#endif
{
postprocess_path_with_format(fmt);
}
template <class Source, typename>

inline path u8path(const Source& source)
{
return path(source);
}
inline path u8path(InputIterator first, InputIterator last)
{
return path(first, last);
}

inline path::path(InputIterator first, InputIterator last, format
fmt)
: path(std::basic_string<typename
std::iterator_traits<InputIterator>::value_type>(first, last),
fmt)
{
// delegated
}
namespace detail {
GHC_INLINE bool equals_simple_insensitive(const path::value_type*

str1, const path::value_type* str2)
{
#ifdef __GNUC__
while (::tolower((unsigned char)*str1) == ::tolower((unsigned
char)*str2++)) {
if (*str1++ == 0)
return true;
}
return false;
#else // __GNUC__
return 0 == ::_wcsicmp(str1, str2);
#else // GHC_USE_WCHAR_T
return 0 == ::_stricmp(str1, str2);
#endif // GHC_USE_WCHAR_T
#endif // __GNUC__
#else // GHC_OS_WINDOWS
return 0 == ::strcasecmp(str1, str2);
#endif // GHC_OS_WINDOWS
}
GHC_INLINE int compare_simple_insensitive(const path::value_type*

str1, size_t len1, const path::value_type* str2, size_t len2)
{
while (len1 > 0 && len2 > 0 && ::tolower(static_cast<unsigned
char>(*str1)) == ::tolower(static_cast<unsigned char>(*str2))) {
--len1;
--len2;
++str1;
++str2;
}
if (len1 && len2) {
return *str1 < *str2 ? -1 : 1;
}
if (len1 == 0 && len2 == 0) {
return 0;
}
return len1 == 0 ? -1 : 1;
}
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
}
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(GetModule
HandleW(L"kernel32.dll"), "CreateSymbolicLinkW"));
#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)
{
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-function-type"
#endif
static CreateHardLinkW_fp api_call =
reinterpret_cast<CreateHardLinkW_fp>(GetProcAddress(GetModuleHand
leW(L"kernel32.dll"), "CreateHardLinkW"));
#pragma GCC diagnostic pop
#endif
if (api_call) {
if (api_call(GHC_NATIVEWP(new_hardlink),
GHC_NATIVEWP(target_name), NULL) == 0) {
ec = detail::make_system_error();
}
}
else {
ec = detail::make_system_error(ERROR_NOT_SUPPORTED);
}
}
GHC_INLINE path getFullPathName(const wchar_t* p,

std::error_code& ec)
{
ULONG size = ::GetFullPathNameW(p, 0, 0, 0);
if (size) {
std::vector<wchar_t> buf(size, 0);
ULONG s2 = GetFullPathNameW(p, size, buf.data(),
nullptr);
if (s2 && s2 < size) {
return path(std::wstring(buf.data(), s2));
}
}
return path();
}
#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)
{
}
}
#ifndef GHC_OS_WEB
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) {
}
}
#endif
#endif

GHC_INLINE file_status file_status_from_st_mode(T mode)
{
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
if (S_ISDIR(mode)) {
}
else if (S_ISREG(mode)) {
}
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);
#endif
}
#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
GHC_INLINE std::shared_ptr<REPARSE_DATA_BUFFER>
getReparseData(const path& p, std::error_code& ec)
{
std::shared_ptr<void> file(CreateFileW(GHC_NATIVEWP(p), 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) {
return nullptr;
}
std::shared_ptr<REPARSE_DATA_BUFFER>
reparseData((REPARSE_DATA_BUFFER*)std::calloc(1,
MAXIMUM_REPARSE_DATA_BUFFER_SIZE), std::free);
ULONG bufferUsed;
if (DeviceIoControl(file.get(), FSCTL_GET_REPARSE_POINT, 0,
0, reparseData.get(), MAXIMUM_REPARSE_DATA_BUFFER_SIZE,
&bufferUsed, 0)) {
return reparseData;
}
else {
}
return nullptr;
}
#endif
GHC_INLINE path resolveSymlink(const path& p, std::error_code&

ec)
{
path result;
auto reparseData = detail::getReparseData(p, ec);
if (!ec) {
if (reparseData && IsReparseTagMicrosoft(reparseData-
>ReparseTag)) {
switch (reparseData->ReparseTag) {
case IO_REPARSE_TAG_SYMLINK: {
auto printName = std::wstring(&reparseData-
>SymbolicLinkReparseBuffer.PathBuffer[reparseData-
>SymbolicLinkReparseBuffer.PrintNameOffset / sizeof(WCHAR)],
reparseData->SymbolicLinkReparseBuffer.PrintNameLength /
sizeof(WCHAR));
auto substituteName =
std::wstring(&reparseData-
>SymbolicLinkReparseBuffer.PathBuffer[reparseData-
>SymbolicLinkReparseBuffer.SubstituteNameOffset / sizeof(WCHAR)],
reparseData->SymbolicLinkReparseBuffer.SubstituteNameLength /
sizeof(WCHAR));
if (detail::endsWith(substituteName,
printName) && detail::startsWith(substituteName, std::wstring(L"\
\??\\"))) {
result = printName;
}
else {
result = substituteName;
}
if (reparseData-
>SymbolicLinkReparseBuffer.Flags & 0x1 /*SYMLINK_FLAG_RELATIVE*/)
{
result = p.parent_path() / result;
}
break;
}
case IO_REPARSE_TAG_MOUNT_POINT:
result =
detail::getFullPathName(GHC_NATIVEWP(p), ec);
//result = std::wstring(&reparseData-
>MountPointReparseBuffer.PathBuffer[reparseData-
>MountPointReparseBuffer.SubstituteNameOffset / sizeof(WCHAR)],
reparseData->MountPointReparseBuffer.SubstituteNameLength /
sizeof(WCHAR));
break;
default:
break;
}
}
}
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) {
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
}
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;
}

GHC_INLINE DWORD reparse_tag_from_INFO(const INFO*)
{
return 0;
}
template <>
GHC_INLINE DWORD reparse_tag_from_INFO(const WIN32_FIND_DATAW*
info)
{
return info->dwReserved0;
}

GHC_INLINE file_status status_from_INFO(const path& p, const
INFO* info, std::error_code& ec, uintmax_t* sz = nullptr, time_t*
lwt = nullptr)
{
if (sizeof(INFO) == sizeof(WIN32_FIND_DATAW)) {
if (detail::reparse_tag_from_INFO(info) ==
IO_REPARSE_TAG_SYMLINK) {
}
}
else {
if ((info->dwFileAttributes &
FILE_ATTRIBUTE_REPARSE_POINT)) {
if (!ec && reparseData &&
IsReparseTagMicrosoft(reparseData->ReparseTag) && reparseData-
>ReparseTag == IO_REPARSE_TAG_SYMLINK) {
}
}
}
if (ft == file_type::unknown) {
if ((info->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
{
}
else {
}
}
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;
}
if (has_executable_extension(p)) {
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);
}
}
#endif
GHC_INLINE bool is_not_found_error(std::error_code& ec)
{
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
{
file_status fs;
WIN32_FILE_ATTRIBUTE_DATA attr;
if (!GetFileAttributesExW(GHC_NATIVEWP(p),
GetFileExInfoStandard, &attr)) {
}
else {
ec.clear();
fs = detail::status_from_INFO(p, &attr, ec, sz, lwt);
if (nhl) {
*nhl = 0;
}
}
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;
}
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();
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(GHC_NATIVEWP(p),
GetFileExInfoStandard, &attr)) {
}
else if (attr.dwFileAttributes &
FILE_ATTRIBUTE_REPARSE_POINT) {
if (!ec && reparseData &&
IsReparseTagMicrosoft(reparseData->ReparseTag) && reparseData-
>ReparseTag == IO_REPARSE_TAG_SYMLINK) {
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);
}

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//---------------------------------------------------------------

// #define BSD manifest constant only in

#if defined(__cpp_impl_three_way_comparison) &&

#if defined(__cpp_impl_three_way_comparison) &&

// After standard library includes.

// Standard library support for std::experimental::string_view.

// ghc::filesystem version in decimal (major * 10000 + minor *

#if !defined(GHC_WITH_EXCEPTIONS) && (defined(__EXCEPTIONS) ||

// temporary existing exception type for yet unimplemented parts

template <typename char_type>

#if __cplusplus < 201703L

// [fs.class.path] class path

// [fs.enum.path.format] enumeration format

template <class T>

template <typename T1, typename T2 = void>

// [fs.path.native.obs] native format observers

input_iterator_range(const InputIterator& first, const

InputIterator begin() const { return _first; }

// [fs.path.nonmember] path non-member functions

// [fs.path.io] path inserter and extractor

// [pfs.path.factory] path factory functions

// [fs.class.filesystem_error] class filesystem_error

class GHC_FS_API_CLASS path::iterator

// [fs.class.file_status] class file_status

// [fs.class.directory_entry] Class directory_entry

// [fs.class.directory.iterator] Class directory_iterator

// [fs.dir.itr.members] member functions

// other members as required by [input.iterators]

// [fs.dir.itr.nonmembers] directory_iterator non-member

// [fs.class.re.dir.itr] class recursive_directory_iterator

// [fs.rec.dir.itr.members] constructors and destructor

const directory_entry& operator*() const;

// other members as required by [input.iterators]

// [fs.rec.dir.itr.nonmembers] directory_iterator non-member

// [fs.op.funcs] filesystem operations

// Non-C++17 add-on std::fstream wrappers with path

template <class charT, class traits = std::char_traits<charT>>

template <class charT, class traits = std::char_traits<charT>>

template <class charT, class traits = std::char_traits<charT>>

typedef basic_filebuf<char> filebuf;

class GHC_FS_API_CLASS u8arguments

bool valid() const { return _isvalid; }

GHC_INLINE std::error_code make_error_code(portable_error err)

template <typename Enum>

template <typename Enum>

template <typename Enum>

template <typename Enum>

template <typename Enum>

template <typename Enum>

template <typename Enum>

GHC_INLINE bool in_range(uint32_t c, uint32_t lo, uint32_t hi)

GHC_INLINE bool is_surrogate(uint32_t c)

GHC_INLINE bool is_high_surrogate(uint32_t c)

GHC_INLINE bool is_low_surrogate(uint32_t c)

GHC_INLINE void appendUTF8(std::string& str, uint32_t unicode)

// Thanks to Bjoern Hoehrmann (https://bjoern.hoehrmann.de/utf-8/

GHC_INLINE bool validUtf8(const std::string& utf8String)

template <class StringType, class Utf8String, typename

template <class StringType, class Utf8String, typename