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filesystem/include/ghc/filesystem.hpp
Steffen Schuemann 91e02dc2c4 Work on CI support for MingW, fixing some MingW issues
2019-05-14 08:42:29 +02:00

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//---------------------------------------------------------------------------------------
//
// ghc::filesystem - A C++17-like filesystem implementation for C++11/C++14
//
//---------------------------------------------------------------------------------------
//
// Copyright (c) 2018, Steffen Schümann <s.schuemann@pobox.com>
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors
// may be used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//---------------------------------------------------------------------------------------
//
// 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
#if defined(__APPLE__) && defined(__MACH__)
#define GHC_OS_MACOS
#elif defined(__linux__)
#define GHC_OS_LINUX
#elif defined(_WIN64)
#define GHC_OS_WINDOWS
#define GHC_OS_WIN64
#elif defined(_WIN32)
#define GHC_OS_WINDOWS
#define GHC_OS_WIN32
#else
#error "Operating system currently not supported!"
#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>
#if defined(__ANDROID__)
#define 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>
#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
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// ghc::filesystem version in decimal (major * 10000 + minor * 100 + patch)
#define GHC_FILESYSTEM_VERSION 10105L
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.")
{
}
};
// 30.10.8 class path
class GHC_FS_API_CLASS path
{
public:
using value_type = std::string::value_type;
using string_type = std::basic_string<value_type>;
#ifdef GHC_OS_WINDOWS
static constexpr value_type preferred_separator = '\\';
#else
static constexpr value_type preferred_separator = '/';
#endif
// 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;
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;
// 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_type<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:
friend class directory_iterator;
void append_name(const char* name);
static constexpr 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;
string_type _path;
#ifdef GHC_OS_WINDOWS
mutable string_type _native_cache;
#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 string_type::const_iterator& first, const string_type::const_iterator& last, const 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:
string_type::const_iterator increment(const std::string::const_iterator& pos) const;
string_type::const_iterator decrement(const std::string::const_iterator& pos) const;
void updateCurrent();
string_type::const_iterator _first;
string_type::const_iterator _last;
string_type::const_iterator _root;
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;
#ifndef GHC_OS_WINDOWS
uintmax_t _hard_link_count;
#endif
time_t _last_write_time;
};
// 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 proxy{**this};
++*this;
return proxy;
}
bool operator==(const directory_iterator& rhs) const;
bool operator!=(const directory_iterator& rhs) const;
void swap(directory_iterator& rhs);
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;
void swap(recursive_directory_iterator& rhs);
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(_MSC_VER)
return std::basic_filebuf<charT, traits>::open(p.wstring().c_str(), mode) ? this : 0;
#else
return std::basic_filebuf<charT, traits>::open(p.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(_MSC_VER)
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.c_str(), mode)
{
}
void open(const path& p, std::ios_base::openmode mode = std::ios_base::in) { std::basic_ifstream<charT, traits>::open(p.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(_MSC_VER)
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.c_str(), mode)
{
}
void open(const path& p, std::ios_base::openmode mode = std::ios_base::out) { std::basic_ofstream<charT, traits>::open(p.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(_MSC_VER)
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.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.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::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);
} // 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();
}
#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 ((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 {
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));
}
}
// 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[] = {
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,
};
uint8_t category = fragment < 128 ? 0 : (utf8_state_info[(fragment >> 3) & 0xf] >> ((fragment & 7) << 2)) & 0xf;
codepoint = (state ? (codepoint << 6) | (fragment & 0x3f) : (0xff >> category) & fragment);
return state == S_RJCT ? static_cast<unsigned>(S_RJCT) : static_cast<unsigned>((utf8_state_info[category + 16] >> (state << 2)) & 0xf);
}
} // namespace detail
#endif
namespace detail {
template <class StringType>
inline StringType fromUtf8(const std::string& utf8String, const typename StringType::allocator_type& alloc = typename StringType::allocator_type())
{
if (sizeof(typename StringType::value_type) == 1) {
return StringType(utf8String.begin(), utf8String.end());
}
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, (uint8_t)*iter++, codepoint)) == S_STRT) {
if (sizeof(typename StringType::value_type) == 4) {
result += codepoint;
}
else {
if (codepoint <= 0xffff) {
result += (typename StringType::value_type)codepoint;
}
else {
codepoint -= 0x10000;
result += (typename StringType::value_type)((codepoint >> 10) + 0xd800);
result += (typename StringType::value_type)((codepoint & 0x3ff) + 0xdc00);
}
}
codepoint = 0;
}
else if (utf8_state == S_RJCT) {
result += (typename StringType::value_type)0xfffd;
utf8_state = S_STRT;
codepoint = 0;
}
}
if (utf8_state) {
result += (typename StringType::value_type)0xfffd;
}
return result;
}
template <typename charT, typename traits, typename Alloc>
inline std::string toUtf8(const std::basic_string<charT, traits, Alloc>& unicodeString)
{
using StringType = std::basic_string<charT, traits, Alloc>;
if (sizeof(typename StringType::value_type) == 1) {
return std::string(unicodeString.begin(), unicodeString.end());
}
std::string result;
result.reserve(unicodeString.length());
if (sizeof(typename StringType::value_type) == 2) {
for (typename StringType::const_iterator 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 {
appendUTF8(result, 0xfffd);
}
}
else {
appendUTF8(result, c);
}
}
}
else {
for (char32_t c : unicodeString) {
appendUTF8(result, c);
}
}
return result;
}
template <typename SourceType>
inline std::string toUtf8(const SourceType* unicodeString)
{
return toUtf8(std::basic_string<SourceType, std::char_traits<SourceType>>(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());
}
GHC_INLINE void postprocess_path_with_format(path::string_type& p, path::format fmt)
{
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:
#endif
if (startsWith(p, std::string("\\\\?\\"))) {
// remove Windows long filename marker
p.erase(0, 4);
if (startsWith(p, std::string("UNC\\"))) {
p.erase(0, 2);
p[0] = '\\';
}
}
for (auto& c : p) {
if (c == '\\') {
c = '/';
}
}
break;
}
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());
}
}
} // namespace detail
#endif // GHC_EXPAND_IMPL
template <class Source, typename>
inline path::path(const Source& source, format fmt)
: _path(source)
{
detail::postprocess_path_with_format(_path, fmt);
}
template <>
inline path::path(const std::wstring& source, format fmt)
{
_path = detail::toUtf8(source);
detail::postprocess_path_with_format(_path, fmt);
}
template <>
inline path::path(const std::u16string& source, format fmt)
{
_path = detail::toUtf8(source);
detail::postprocess_path_with_format(_path, fmt);
}
template <>
inline path::path(const std::u32string& source, format fmt)
{
_path = detail::toUtf8(source);
detail::postprocess_path_with_format(_path, fmt);
}
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
}
template <typename ErrorNumber>
GHC_INLINE std::string systemErrorText(ErrorNumber code = 0)
{
#if defined(GHC_OS_WINDOWS)
LPVOID msgBuf;
DWORD dw = code ? 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;
#elif defined(GHC_OS_MACOS) || ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE)) || (defined(GHC_OS_ANDROID) && __ANDROID_API__ < 23)
char buffer[512];
int rc = strerror_r(code ? code : errno, buffer, sizeof(buffer));
return rc == 0 ? (const char*)buffer : "Error in strerror_r!";
#else
char buffer[512];
char* msg = strerror_r(code ? code : errno, buffer, sizeof(buffer));
return msg ? msg : 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;
}
static CreateSymbolicLinkW_fp api_call = reinterpret_cast<CreateSymbolicLinkW_fp>(GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "CreateSymbolicLinkW"));
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 = std::error_code(result, std::system_category());
}
}
else {
ec = std::error_code(ERROR_NOT_SUPPORTED, std::system_category());
}
}
GHC_INLINE void create_hardlink(const path& target_name, const path& new_hardlink, std::error_code& ec)
{
static CreateHardLinkW_fp api_call = reinterpret_cast<CreateHardLinkW_fp>(GetProcAddress(GetModuleHandleW(L"kernel32.dll"), "CreateHardLinkW"));
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 = std::error_code(::GetLastError(), std::system_category());
}
}
else {
ec = std::error_code(ERROR_NOT_SUPPORTED, std::system_category());
}
}
#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 = std::error_code(errno, std::system_category());
}
}
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 = std::error_code(errno, std::system_category());
}
}
#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 = std::error_code(::GetLastError(), std::system_category());
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 = std::error_code(::GetLastError(), std::system_category());
}
return result;
#else
size_t bufferSize = 256;
while (true) {
std::vector<char> buffer(bufferSize, (char)0);
auto rc = ::readlink(p.c_str(), buffer.data(), buffer.size());
if (rc < 0) {
ec = std::error_code(errno, std::system_category());
return path();
}
else if (rc < static_cast<int>(bufferSize)) {
return path(std::string(buffer.data(), 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 ull.QuadPart / 10000000ULL - 11644473600ULL;
}
GHC_INLINE void timeToFILETIME(time_t t, FILETIME& ft)
{
LONGLONG ll;
ll = Int32x32To64(t, 10000000) + 116444736000000000;
ft.dwLowDateTime = (DWORD)ll;
ft.dwHighDateTime = 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& ec, 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 = std::error_code(::GetLastError(), std::system_category());
}
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 = std::error_code(errno, std::system_category());
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 = std::error_code(0x2A9 /*ERROR_STOPPED_ON_SYMLINK*/, std::system_category());
return file_status(file_type::unknown);
}
WIN32_FILE_ATTRIBUTE_DATA attr;
if (!::GetFileAttributesExW(p.wstring().c_str(), GetFileExInfoStandard, &attr)) {
ec = std::error_code(::GetLastError(), std::system_category());
}
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 = st.st_size;
}
if (nhl) {
*nhl = st.st_nlink;
}
if (lwt) {
*lwt = st.st_mtime;
}
return fs;
}
else {
ec = std::error_code(errno, std::system_category());
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(argc);
_argp.reserve(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)
: _path(std::move(source))
{
detail::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)
{
_path = std::move(source);
detail::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));
detail::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);
detail::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) {
_path += x;
}
return *this;
}
#endif // GHC_EXPAND_IMPL
template <class Source>
inline path::path_type<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(x);
concat(detail::toUtf8(part));
return *this;
}
template <class Source>
inline path& path::concat(const Source& x)
{
path p(x);
detail::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);
detail::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
GHC_INLINE const path::string_type& path::native() const
{
#ifdef GHC_OS_WINDOWS
if (is_absolute() && _path.length() > MAX_PATH - 10) {
// expand long Windows filenames with marker
if (has_root_name() && _path[0] == '/') {
_native_cache = "\\\\?\\UNC" + _path.substr(1);
}
else {
_native_cache = "\\\\?\\" + _path;
}
}
else {
_native_cache = _path;
}
/*if (has_root_name() && root_name()._path[0] == '/') {
return _path;
}*/
for (auto& c : _native_cache) {
if (c == '/') {
c = '\\';
}
}
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(), a);
}
#ifdef GHC_EXPAND_IMPL
GHC_INLINE std::string path::string() const
{
return native();
}
GHC_INLINE std::wstring path::wstring() const
{
return detail::fromUtf8<std::wstring>(native());
}
GHC_INLINE std::string path::u8string() const
{
return native();
}
GHC_INLINE std::u16string path::u16string() const
{
return detail::fromUtf8<std::u16string>(native());
}
GHC_INLINE std::u32string path::u32string() const
{
return detail::fromUtf8<std::u32string>(native());
}
#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])) {
string_type::size_type pos = _path.find_first_of("/\\", 3);
if (pos == 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 (const 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
{
string_type fn = filename();
if (fn != "." && fn != "..") {
string_type::size_type n = fn.rfind(".");
if (n != string_type::npos && n != 0) {
return fn.substr(0, n);
}
}
return fn;
}
GHC_INLINE path path::extension() const
{
string_type fn = filename();
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;
for (const 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;
}
}
dest /= 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 != "..") {
++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::string_type::const_iterator& first, const path::string_type::const_iterator& last, const path::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::string_type::const_iterator path::iterator::increment(const path::string_type::const_iterator& pos) const
{
std::string::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::string_type::const_iterator path::iterator::decrement(const path::string_type::const_iterator& pos) const
{
std::string::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<std::string::const_iterator>(i), std::reverse_iterator<std::string::const_iterator>(_first), seps.begin(), seps.end()).base();
if (i > _first && *i == ':') {
i++;
}
#else
i = std::find(std::reverse_iterator<std::string::const_iterator>(i), std::reverse_iterator<std::string::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)
{
path::iterator 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;
auto c = is.get();
if (c == '"') {
auto sf = is.flags();
is >> std::noskipws;
while (is) {
c = is.get();
if (is) {
if (c == '\\') {
c = is.get();
if (is) {
tmp += static_cast<charT>(c);
}
}
else if (c == '"') {
break;
}
else {
tmp += static_cast<charT>(c);
}
}
}
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 = std::error_code(::GetLastError(), std::system_category());
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 = std::error_code(errno, std::system_category());
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, 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 = std::error_code(errno, std::system_category());
return false;
}
auto to_time = last_write_time(to, ec);
if (ec) {
ec = std::error_code(errno, std::system_category());
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 = std::error_code(::GetLastError(), std::system_category());
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 = std::error_code(errno, std::system_category());
return false;
}
std::shared_ptr<void> guard_out(nullptr, [out](void*) { ::close(out); });
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 = std::error_code(errno, std::system_category());
return false;
}
std::shared_ptr<void> guard_in(nullptr, [in](void*) { ::close(in); });
ssize_t br, bw;
while ((br = ::read(in, buffer.data(), buffer.size())) > 0) {
int offset = 0;
do {
if ((bw = ::write(out, buffer.data() + offset, br)) > 0) {
br -= bw;
offset += bw;
}
else if (bw < 0) {
ec = std::error_code(errno, std::system_category());
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();
for (const std::string& 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) {
return false;
}
}
#ifndef LWG_2935_BEHAVIOUR
else if (!is_directory(fs)) {
ec = detail::make_error_code(detail::portable_error::exists);
return false;
}
#endif
}
}
return true;
}
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 = std::error_code(::GetLastError(), std::system_category());
return false;
}
}
else if (!::CreateDirectoryW(detail::fromUtf8<std::wstring>(p.u8string()).c_str(), NULL)) {
ec = std::error_code(::GetLastError(), std::system_category());
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 = std::error_code(errno, std::system_category());
return false;
}
attribs = fileStat.st_mode;
}
if (::mkdir(p.c_str(), attribs) != 0) {
ec = std::error_code(errno, std::system_category());
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[pathlen + 1]);
if (::GetCurrentDirectoryW(pathlen, buffer.get()) == 0) {
ec = std::error_code(::GetLastError(), std::system_category());
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) == NULL) {
ec = std::error_code(errno, std::system_category());
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 = std::error_code(::GetLastError(), std::system_category());
}
#else
if (::chdir(p.string().c_str()) == -1) {
ec = std::error_code(errno, std::system_category());
}
#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 = std::error_code(e1 ? e1 : ::GetLastError(), std::system_category());
#else
if (file1 == file2) {
ec = std::error_code(e1 ? e1 : ::GetLastError(), std::system_category());
}
#endif
return false;
}
BY_HANDLE_FILE_INFORMATION inf1, inf2;
if (!::GetFileInformationByHandle(file1.get(), &inf1)) {
ec = std::error_code(::GetLastError(), std::system_category());
return false;
}
if (!::GetFileInformationByHandle(file2.get(), &inf2)) {
ec = std::error_code(::GetLastError(), std::system_category());
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 = std::error_code(e1 ? e1 : errno, std::system_category());
#else
if (rc1 && rc2) {
ec = std::error_code(e1 ? e1 : errno, std::system_category());
}
#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 = std::error_code(::GetLastError(), std::system_category());
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 = std::error_code(errno, std::system_category());
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 = std::error_code(::GetLastError(), std::system_category());
}
else {
if (!::GetFileInformationByHandle(file.get(), &inf)) {
ec = std::error_code(::GetLastError(), std::system_category());
}
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 = (unsigned long)tt;
ft.dwHighDateTime = tt >> 32;
if (!::SetFileTime(file.get(), 0, 0, &ft)) {
ec = std::error_code(::GetLastError(), std::system_category());
}
#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 = std::error_code(errno, std::system_category());
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 = std::error_code(errno, std::system_category());
}
return;
#endif
#endif
#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 = std::error_code(errno, std::system_category());
}
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 & ~FILE_ATTRIBUTE_READONLY : oldAttr | FILE_ATTRIBUTE_READONLY;
if (oldAttr == newAttr || SetFileAttributesW(p.wstring().c_str(), newAttr)) {
return;
}
}
ec = std::error_code(::GetLastError(), std::system_category());
#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 = std::error_code(::GetLastError(), std::system_category());
}
#endif
#else
if ((opts & perm_options::nofollow) != perm_options::nofollow) {
if (::chmod(p.c_str(), static_cast<mode_t>(prms)) != 0) {
ec = std::error_code(errno, std::system_category());
}
}
#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 = std::error_code(error, std::system_category());
}
if (!ec) {
if (attr & FILE_ATTRIBUTE_DIRECTORY) {
if (!RemoveDirectoryW(np.c_str())) {
ec = std::error_code(::GetLastError(), std::system_category());
}
}
else {
if (!DeleteFileW(np.c_str())) {
ec = std::error_code(::GetLastError(), std::system_category());
}
}
}
#else
if (::remove(p.c_str()) == -1) {
auto error = errno;
if (error == ENOENT) {
return false;
}
ec = std::error_code(errno, std::system_category());
}
#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 (!MoveFileW(detail::fromUtf8<std::wstring>(from.u8string()).c_str(), detail::fromUtf8<std::wstring>(to.u8string()).c_str())) {
ec = std::error_code(::GetLastError(), std::system_category());
}
}
#else
if (from != to) {
if (::rename(from.c_str(), to.c_str()) != 0) {
ec = std::error_code(errno, std::system_category());
}
}
#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 = size;
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 = std::error_code(::GetLastError(), std::system_category());
}
else if (SetFilePointerEx(file.get(), lisize, NULL, FILE_BEGIN) == 0 || SetEndOfFile(file.get()) == 0) {
ec = std::error_code(::GetLastError(), std::system_category());
}
#else
if (::truncate(p.c_str(), size) != 0) {
ec = std::error_code(errno, std::system_category());
}
#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};
ULARGE_INTEGER totalNumberOfBytes = {0};
ULARGE_INTEGER totalNumberOfFreeBytes = {0};
if (!GetDiskFreeSpaceExW(detail::fromUtf8<std::wstring>(p.u8string()).c_str(), &freeBytesAvailableToCaller, &totalNumberOfBytes, &totalNumberOfFreeBytes)) {
ec = std::error_code(::GetLastError(), std::system_category());
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 = std::error_code(errno, std::system_category());
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
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];
int rc = GetTempPathW(511, buffer);
if (!rc || rc > 511) {
ec = std::error_code(::GetLastError(), std::system_category());
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) {
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) {
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) {
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) {
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) {
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(_base.empty() ? INVALID_HANDLE_VALUE : FindFirstFileW(detail::fromUtf8<std::wstring>((_base / "*").u8string()).c_str(), &_findData))
, _current(_dirHandle != INVALID_HANDLE_VALUE ? _base / std::wstring(_findData.cFileName) : filesystem::path())
{
if (_dirHandle == INVALID_HANDLE_VALUE && !p.empty()) {
auto error = ::GetLastError();
_base = filesystem::path();
if (error != ERROR_ACCESS_DENIED || (options & directory_options::skip_permission_denied) == directory_options::none) {
_ec = std::error_code(::GetLastError(), std::system_category());
}
}
else {
if (std::wstring(_findData.cFileName) == L"." || std::wstring(_findData.cFileName) == L"..") {
increment(_ec);
}
else {
copyToDirEntry(_ec);
}
}
}
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;
_current.append_name(detail::toUtf8(_findData.cFileName).c_str());
copyToDirEntry(ec);
}
else {
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 = std::error_code(errno, std::system_category());
}
}
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 = std::error_code(errno, std::system_category());
}
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;
}
GHC_INLINE void directory_iterator::swap(directory_iterator& rhs)
{
std::swap(_impl, rhs._impl);
}
// 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();
}
GHC_INLINE void recursive_directory_iterator::swap(recursive_directory_iterator& rhs)
{
std::swap(_impl, rhs._impl);
}
// 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
#endif // GHC_FILESYSTEM_H
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